diff --git a/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/old.dbscheme b/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/old.dbscheme
new file mode 100644
index 000000000000..b8173c6954a3
--- /dev/null
+++ b/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/old.dbscheme
@@ -0,0 +1,2473 @@
+
+/*- Compilations -*/
+
+/**
+ * An invocation of the compiler. Note that more than one file may be
+ * compiled per invocation. For example, this command compiles three
+ * source files:
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * The `id` simply identifies the invocation, while `cwd` is the working
+ * directory from which the compiler was invoked.
+ */
+compilations(
+    /**
+     * An invocation of the compiler. Note that more than one file may
+     * be compiled per invocation. For example, this command compiles
+     * three source files:
+     *
+     *   gcc -c f1.c f2.c f3.c
+     */
+    unique int id : @compilation,
+    string cwd : string ref
+);
+
+/**
+ * The arguments that were passed to the extractor for a compiler
+ * invocation. If `id` is for the compiler invocation
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * then typically there will be rows for
+ *
+ * num | arg
+ * --- | ---
+ * 0   | *path to extractor*
+ * 1   | `--mimic`
+ * 2   | `/usr/bin/gcc`
+ * 3   | `-c`
+ * 4   | f1.c
+ * 5   | f2.c
+ * 6   | f3.c
+ */
+#keyset[id, num]
+compilation_args(
+    int id : @compilation ref,
+    int num : int ref,
+    string arg : string ref
+);
+
+/**
+ * The expanded arguments that were passed to the extractor for a
+ * compiler invocation. This is similar to `compilation_args`, but
+ * for a `@someFile` argument, it includes the arguments from that
+ * file, rather than just taking the argument literally.
+ */
+#keyset[id, num]
+compilation_expanded_args(
+    int id : @compilation ref,
+    int num : int ref,
+    string arg : string ref
+);
+
+/**
+ * Optionally, record the build mode for each compilation.
+ */
+compilation_build_mode(
+    unique int id : @compilation ref,
+    int mode : int ref
+);
+
+/*
+case @compilation_build_mode.mode of
+  0 = @build_mode_none
+| 1 = @build_mode_manual
+| 2 = @build_mode_auto
+;
+*/
+
+/**
+ * The source files that are compiled by a compiler invocation.
+ * If `id` is for the compiler invocation
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * then there will be rows for
+ *
+ * num | arg
+ * --- | ---
+ * 0   | f1.c
+ * 1   | f2.c
+ * 2   | f3.c
+ *
+ * Note that even if those files `#include` headers, those headers
+ * do not appear as rows.
+ */
+#keyset[id, num]
+compilation_compiling_files(
+    int id : @compilation ref,
+    int num : int ref,
+    int file : @file ref
+);
+
+/**
+ * The time taken by the extractor for a compiler invocation.
+ *
+ * For each file `num`, there will be rows for
+ *
+ * kind | seconds
+ * ---- | ---
+ * 1    | CPU seconds used by the extractor frontend
+ * 2    | Elapsed seconds during the extractor frontend
+ * 3    | CPU seconds used by the extractor backend
+ * 4    | Elapsed seconds during the extractor backend
+ */
+#keyset[id, num, kind]
+compilation_time(
+    int id : @compilation ref,
+    int num : int ref,
+    /* kind:
+       1 = frontend_cpu_seconds
+       2 = frontend_elapsed_seconds
+       3 = extractor_cpu_seconds
+       4 = extractor_elapsed_seconds
+    */
+    int kind : int ref,
+    float seconds : float ref
+);
+
+/**
+ * An error or warning generated by the extractor.
+ * The diagnostic message `diagnostic` was generated during compiler
+ * invocation `compilation`, and is the `file_number_diagnostic_number`th
+ * message generated while extracting the `file_number`th file of that
+ * invocation.
+ */
+#keyset[compilation, file_number, file_number_diagnostic_number]
+diagnostic_for(
+    int diagnostic : @diagnostic ref,
+    int compilation : @compilation ref,
+    int file_number : int ref,
+    int file_number_diagnostic_number : int ref
+);
+
+/**
+ * If extraction was successful, then `cpu_seconds` and
+ * `elapsed_seconds` are the CPU time and elapsed time (respectively)
+ * that extraction took for compiler invocation `id`.
+ */
+compilation_finished(
+    unique int id : @compilation ref,
+    float cpu_seconds : float ref,
+    float elapsed_seconds : float ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- C++ dbscheme -*/
+
+extractor_version(
+    string codeql_version: string ref,
+    string frontend_version: string ref
+)
+
+pch_uses(
+    int pch: @pch ref,
+    int compilation: @compilation ref,
+    int id: @file ref
+)
+
+#keyset[pch, compilation]
+pch_creations(
+    int pch: @pch,
+    int compilation: @compilation ref,
+    int from: @file ref
+)
+
+/** An element for which line-count information is available. */
+@sourceline = @file | @function | @variable | @enumconstant | @xmllocatable;
+
+fileannotations(
+    int id: @file ref,
+    int kind: int ref,
+    string name: string ref,
+    string value: string ref
+);
+
+inmacroexpansion(
+    int id: @element ref,
+    int inv: @macroinvocation ref
+);
+
+affectedbymacroexpansion(
+    int id: @element ref,
+    int inv: @macroinvocation ref
+);
+
+case @macroinvocation.kind of
+  1 = @macro_expansion
+| 2 = @other_macro_reference
+;
+
+macroinvocations(
+    unique int id: @macroinvocation,
+    int macro_id: @ppd_define ref,
+    int location: @location_default ref,
+    int kind: int ref
+);
+
+macroparent(
+    unique int id: @macroinvocation ref,
+    int parent_id: @macroinvocation ref
+);
+
+// a macroinvocation may be part of another location
+// the way to find a constant expression that uses a macro
+// is thus to find a constant expression that has a location
+// to which a macro invocation is bound
+macrolocationbind(
+    int id: @macroinvocation ref,
+    int location: @location_default ref
+);
+
+#keyset[invocation, argument_index]
+macro_argument_unexpanded(
+    int invocation: @macroinvocation ref,
+    int argument_index: int ref,
+    string text: string ref
+);
+
+#keyset[invocation, argument_index]
+macro_argument_expanded(
+    int invocation: @macroinvocation ref,
+    int argument_index: int ref,
+    string text: string ref
+);
+
+case @function.kind of
+  0 = @unknown_function
+| 1 = @normal_function
+| 2 = @constructor
+| 3 = @destructor
+| 4 = @conversion_function
+| 5 = @operator
+// ... 6 = @builtin_function deprecated    // GCC built-in functions, e.g. __builtin___memcpy_chk
+| 7 = @user_defined_literal
+| 8 = @deduction_guide
+;
+
+functions(
+    unique int id: @function,
+    string name: string ref,
+    int kind: int ref
+);
+
+builtin_functions(
+    int id: @function ref
+)
+
+function_entry_point(
+    int id: @function ref,
+    unique int entry_point: @stmt ref
+);
+
+function_return_type(
+    int id: @function ref,
+    int return_type: @type ref
+);
+
+/**
+ * If `function` is a coroutine, then this gives the `std::experimental::resumable_traits`
+ * instance associated with it, and the variables representing the `handle` and `promise`
+ * for it.
+ */
+coroutine(
+  unique int function: @function ref,
+  int traits: @type ref
+);
+
+/*
+case @coroutine_placeholder_variable.kind of
+  1 = @handle
+| 2 = @promise
+| 3 = @init_await_resume
+;
+*/
+
+coroutine_placeholder_variable(
+  unique int placeholder_variable: @variable ref,
+  int kind: int ref,
+  int function: @function ref
+)
+
+/** The `new` function used for allocating the coroutine state, if any. */
+coroutine_new(
+  unique int function: @function ref,
+  int new: @function ref
+);
+
+/** The `delete` function used for deallocating the coroutine state, if any. */
+coroutine_delete(
+  unique int function: @function ref,
+  int delete: @function ref
+);
+
+purefunctions(unique int id: @function ref);
+
+function_deleted(unique int id: @function ref);
+
+function_defaulted(unique int id: @function ref);
+
+function_prototyped(unique int id: @function ref)
+
+deduction_guide_for_class(
+    int id: @function ref,
+    int class_template: @usertype ref
+)
+
+member_function_this_type(
+    unique int id: @function ref,
+    int this_type: @type ref
+);
+
+#keyset[id, type_id]
+fun_decls(
+    int id: @fun_decl,
+    int function: @function ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+fun_def(unique int id: @fun_decl ref);
+fun_specialized(unique int id: @fun_decl ref);
+fun_implicit(unique int id: @fun_decl ref);
+fun_decl_specifiers(
+    int id: @fun_decl ref,
+    string name: string ref
+)
+#keyset[fun_decl, index]
+fun_decl_throws(
+    int fun_decl: @fun_decl ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+/* an empty throw specification is different from none */
+fun_decl_empty_throws(unique int fun_decl: @fun_decl ref);
+fun_decl_noexcept(
+    int fun_decl: @fun_decl ref,
+    int constant: @expr ref
+);
+fun_decl_empty_noexcept(int fun_decl: @fun_decl ref);
+fun_decl_typedef_type(
+    unique int fun_decl: @fun_decl ref,
+    int typedeftype_id: @usertype ref
+);
+
+/*
+case @fun_requires.kind of
+  1 = @template_attached
+| 2 = @function_attached
+;
+*/
+
+fun_requires(
+    int id: @fun_decl ref,
+    int kind: int ref,
+    int constraint: @expr ref
+);
+
+param_decl_bind(
+    unique int id: @var_decl ref,
+    int index: int ref,
+    int fun_decl: @fun_decl ref
+);
+
+#keyset[id, type_id]
+var_decls(
+    int id: @var_decl,
+    int variable: @variable ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+var_def(unique int id: @var_decl ref);
+var_specialized(int id: @var_decl ref);
+var_decl_specifiers(
+    int id: @var_decl ref,
+    string name: string ref
+)
+is_structured_binding(unique int id: @variable ref);
+var_requires(
+    int id: @var_decl ref,
+    int constraint: @expr ref
+);
+
+type_decls(
+    unique int id: @type_decl,
+    int type_id: @type ref,
+    int location: @location_default ref
+);
+type_def(unique int id: @type_decl ref);
+type_decl_top(
+    unique int type_decl: @type_decl ref
+);
+type_requires(
+    int id: @type_decl ref,
+    int constraint: @expr ref
+);
+
+namespace_decls(
+    unique int id: @namespace_decl,
+    int namespace_id: @namespace ref,
+    int location: @location_default ref,
+    int bodylocation: @location_default ref
+);
+
+case @using.kind of
+  1 = @using_declaration
+| 2 = @using_directive
+| 3 = @using_enum_declaration
+;
+
+usings(
+    unique int id: @using,
+    int element_id: @element ref,
+    int location: @location_default ref,
+    int kind: int ref
+);
+
+/** The element which contains the `using` declaration. */
+using_container(
+    int parent: @element ref,
+    int child: @using ref
+);
+
+static_asserts(
+    unique int id: @static_assert,
+    int condition : @expr ref,
+    string message : string ref,
+    int location: @location_default ref,
+    int enclosing : @element ref
+);
+
+// each function has an ordered list of parameters
+#keyset[id, type_id]
+#keyset[function, index, type_id]
+params(
+    int id: @parameter,
+    int function: @parameterized_element ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+
+overrides(
+    int new: @function ref,
+    int old: @function ref
+);
+
+#keyset[id, type_id]
+membervariables(
+    int id: @membervariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+#keyset[id, type_id]
+globalvariables(
+    int id: @globalvariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+#keyset[id, type_id]
+localvariables(
+    int id: @localvariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+autoderivation(
+    unique int var: @variable ref,
+    int derivation_type: @type ref
+);
+
+orphaned_variables(
+    int var: @localvariable ref,
+    int function: @function ref
+)
+
+enumconstants(
+    unique int id: @enumconstant,
+    int parent: @usertype ref,
+    int index: int ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+
+@variable = @localscopevariable | @globalvariable | @membervariable;
+
+@localscopevariable = @localvariable | @parameter;
+
+/**
+ * Built-in types are the fundamental types, e.g., integral, floating, and void.
+ */
+case @builtintype.kind of
+   1 = @errortype
+|  2 = @unknowntype
+|  3 = @void
+|  4 = @boolean
+|  5 = @char
+|  6 = @unsigned_char
+|  7 = @signed_char
+|  8 = @short
+|  9 = @unsigned_short
+| 10 = @signed_short
+| 11 = @int
+| 12 = @unsigned_int
+| 13 = @signed_int
+| 14 = @long
+| 15 = @unsigned_long
+| 16 = @signed_long
+| 17 = @long_long
+| 18 = @unsigned_long_long
+| 19 = @signed_long_long
+// ... 20 Microsoft-specific __int8
+// ... 21 Microsoft-specific __int16
+// ... 22 Microsoft-specific __int32
+// ... 23 Microsoft-specific __int64
+| 24 = @float
+| 25 = @double
+| 26 = @long_double
+| 27 = @complex_float         // C99-specific _Complex float
+| 28 = @complex_double        // C99-specific _Complex double
+| 29 = @complex_long_double   // C99-specific _Complex long double
+| 30 = @imaginary_float       // C99-specific _Imaginary float
+| 31 = @imaginary_double      // C99-specific _Imaginary double
+| 32 = @imaginary_long_double // C99-specific _Imaginary long double
+| 33 = @wchar_t               // Microsoft-specific
+| 34 = @decltype_nullptr      // C++11
+| 35 = @int128                // __int128
+| 36 = @unsigned_int128       // unsigned __int128
+| 37 = @signed_int128         // signed __int128
+| 38 = @float128              // __float128
+| 39 = @complex_float128      // _Complex __float128
+// ... 40 _Decimal32
+// ... 41 _Decimal64
+// ... 42 _Decimal128
+| 43 = @char16_t
+| 44 = @char32_t
+| 45 = @std_float32           // _Float32
+| 46 = @float32x              // _Float32x
+| 47 = @std_float64           // _Float64
+| 48 = @float64x              // _Float64x
+| 49 = @std_float128          // _Float128
+// ... 50 _Float128x
+| 51 = @char8_t
+| 52 = @float16               // _Float16
+| 53 = @complex_float16       // _Complex _Float16
+| 54 = @fp16                  // __fp16
+| 55 = @std_bfloat16          // __bf16
+| 56 = @std_float16           // std::float16_t
+| 57 = @complex_std_float32   // _Complex _Float32
+| 58 = @complex_float32x      // _Complex _Float32x
+| 59 = @complex_std_float64   // _Complex _Float64
+| 60 = @complex_float64x      // _Complex _Float64x
+| 61 = @complex_std_float128  // _Complex _Float128
+| 62 = @mfp8                  // __mfp8
+| 63 = @scalable_vector_count // __SVCount_t
+| 64 = @complex_fp16          // _Complex __fp16
+| 65 = @complex_std_bfloat16  // _Complex __bf16
+| 66 = @complex_std_float16   // _Complex std::float16_t
+;
+
+builtintypes(
+    unique int id: @builtintype,
+    string name: string ref,
+    int kind: int ref,
+    int size: int ref,
+    int sign: int ref,
+    int alignment: int ref
+);
+
+/**
+ * Derived types are types that are directly derived from existing types and
+ * point to, refer to, transform type data to return a new type.
+ */
+case @derivedtype.kind of
+   1 = @pointer
+|  2 = @reference
+|  3 = @type_with_specifiers
+|  4 = @array
+|  5 = @gnu_vector
+|  6 = @routineptr
+|  7 = @routinereference
+|  8 = @rvalue_reference // C++11
+// ... 9 type_conforming_to_protocols deprecated
+| 10 = @block
+| 11 = @scalable_vector // Arm SVE
+;
+
+derivedtypes(
+    unique int id: @derivedtype,
+    string name: string ref,
+    int kind: int ref,
+    int type_id: @type ref
+);
+
+pointerishsize(unique int id: @derivedtype ref,
+    int size: int ref,
+    int alignment: int ref);
+
+arraysizes(
+    unique int id: @derivedtype ref,
+    int num_elements: int ref,
+    int bytesize: int ref,
+    int alignment: int ref
+);
+
+tupleelements(
+    unique int id: @derivedtype ref,
+    int num_elements: int ref
+);
+
+typedefbase(
+    unique int id: @usertype ref,
+    int type_id: @type ref
+);
+
+/**
+ * An instance of the C++11 `decltype` operator or C23 `typeof`/`typeof_unqual`
+ * operator taking an expression as its argument.  For example:
+ * ```
+ * int a;
+ * decltype(1+a) b;
+ * typeof(1+a) c;
+ * ```
+ * Here `expr` is `1+a`.
+ *
+ * Sometimes an additional pair of parentheses around the expression
+ * changes the semantics of the decltype, e.g.
+ * ```
+ * struct A { double x; };
+ * const A* a = new A();
+ * decltype( a->x ); // type is double
+ * decltype((a->x)); // type is const double&
+ * ```
+ * (Please consult the C++11 standard for more details).
+ * `parentheses_would_change_meaning` is `true` iff that is the case.
+ */
+
+/*
+case @decltype.kind of
+|  0 = @decltype
+|  1 = @typeof // The frontend does not differentiate between typeof and typeof_unqual
+;
+*/
+
+#keyset[id, expr]
+decltypes(
+    int id: @decltype,
+    int expr: @expr ref,
+    int kind: int ref,
+    int base_type: @type ref,
+    boolean parentheses_would_change_meaning: boolean ref
+);
+
+case @type_operator.kind of
+   0 = @typeof // The frontend does not differentiate between typeof and typeof_unqual
+|  1 = @underlying_type
+|  2 = @bases
+|  3 = @direct_bases
+|  4 = @add_lvalue_reference
+|  5 = @add_pointer
+|  6 = @add_rvalue_reference
+|  7 = @decay
+|  8 = @make_signed
+|  9 = @make_unsigned
+| 10 = @remove_all_extents
+| 11 = @remove_const
+| 12 = @remove_cv
+| 13 = @remove_cvref
+| 14 = @remove_extent
+| 15 = @remove_pointer
+| 16 = @remove_reference_t
+| 17 = @remove_restrict
+| 18 = @remove_volatile
+| 19 = @remove_reference
+;
+
+type_operators(
+    unique int id: @type_operator,
+    int arg_type: @type ref,
+    int kind: int ref,
+    int base_type: @type ref
+)
+
+case @usertype.kind of
+   0 = @unknown_usertype
+|  1 = @struct
+|  2 = @class
+|  3 = @union
+|  4 = @enum
+// ... 5 = @typedef deprecated        // classic C: typedef typedef type name
+// ... 6 = @template deprecated
+|  7 = @template_parameter
+|  8 = @template_template_parameter
+|  9 = @proxy_class                   // a proxy class associated with a template parameter
+// ... 10 objc_class deprecated
+// ... 11 objc_protocol deprecated
+// ... 12 objc_category deprecated
+| 13 = @scoped_enum
+// ... 14 = @using_alias deprecated   // a using name = type style typedef
+| 15 = @template_struct
+| 16 = @template_class
+| 17 = @template_union
+| 18 = @alias
+;
+
+usertypes(
+    unique int id: @usertype,
+    string name: string ref,
+    int kind: int ref
+);
+
+usertypesize(
+    unique int id: @usertype ref,
+    int size: int ref,
+    int alignment: int ref
+);
+
+usertype_final(unique int id: @usertype ref);
+
+usertype_uuid(
+    unique int id: @usertype ref,
+    string uuid: string ref
+);
+
+/*
+case @usertype.alias_kind of
+| 0 = @typedef
+| 1 = @alias
+*/
+
+usertype_alias_kind(
+    int id: @usertype ref,
+    int alias_kind: int ref
+)
+
+nontype_template_parameters(
+    int id: @expr ref
+);
+
+type_template_type_constraint(
+    int id: @usertype ref,
+    int constraint: @expr ref
+);
+
+mangled_name(
+    unique int id: @declaration ref,
+    int mangled_name : @mangledname,
+    boolean is_complete: boolean ref
+);
+
+is_pod_class(unique int id: @usertype ref);
+is_standard_layout_class(unique int id: @usertype ref);
+
+is_complete(unique int id: @usertype ref);
+
+is_class_template(unique int id: @usertype ref);
+class_instantiation(
+    int to: @usertype ref,
+    int from: @usertype ref
+);
+class_template_argument(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+class_template_argument_value(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+@user_or_decltype = @usertype | @decltype;
+
+is_proxy_class_for(
+    unique int id: @usertype ref,
+    int templ_param_id: @user_or_decltype ref
+);
+
+type_mentions(
+    unique int id: @type_mention,
+    int type_id: @type ref,
+    int location: @location_default ref,
+    // a_symbol_reference_kind from the frontend.
+    int kind: int ref
+);
+
+is_function_template(unique int id: @function ref);
+function_instantiation(
+    unique int to: @function ref,
+    int from: @function ref
+);
+function_template_argument(
+    int function_id: @function ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+function_template_argument_value(
+    int function_id: @function ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+is_variable_template(unique int id: @variable ref);
+variable_instantiation(
+    unique int to: @variable ref,
+    int from: @variable ref
+);
+variable_template_argument(
+    int variable_id: @variable ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+variable_template_argument_value(
+    int variable_id: @variable ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+template_template_instantiation(
+    int to: @usertype ref,
+    int from: @usertype ref
+);
+template_template_argument(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+template_template_argument_value(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+@concept = @concept_template | @concept_id;
+
+concept_templates(
+    unique int concept_id: @concept_template,
+    string name: string ref,
+    int location: @location_default ref
+);
+concept_instantiation(
+    unique int to: @concept_id ref,
+    int from: @concept_template ref
+);
+is_type_constraint(int concept_id: @concept_id ref);
+concept_template_argument(
+    int concept_id: @concept ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+concept_template_argument_value(
+    int concept_id: @concept ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+routinetypes(
+    unique int id: @routinetype,
+    int return_type: @type ref
+);
+
+routinetypeargs(
+    int routine: @routinetype ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+
+ptrtomembers(
+    unique int id: @ptrtomember,
+    int type_id: @type ref,
+    int class_id: @type ref
+);
+
+/*
+ specifiers for types, functions, and variables
+
+    "public",
+    "protected",
+    "private",
+
+    "const",
+    "volatile",
+    "static",
+
+    "pure",
+    "virtual",
+    "sealed", // Microsoft
+    "__interface", // Microsoft
+    "inline",
+    "explicit",
+
+    "near", // near far extension
+    "far", // near far extension
+    "__ptr32", // Microsoft
+    "__ptr64", // Microsoft
+    "__sptr", // Microsoft
+    "__uptr", // Microsoft
+    "dllimport", // Microsoft
+    "dllexport", // Microsoft
+    "thread", // Microsoft
+    "naked", // Microsoft
+    "microsoft_inline", // Microsoft
+    "forceinline", // Microsoft
+    "selectany", // Microsoft
+    "nothrow", // Microsoft
+    "novtable", // Microsoft
+    "noreturn", // Microsoft
+    "noinline", // Microsoft
+    "noalias", // Microsoft
+    "restrict", // Microsoft
+*/
+
+specifiers(
+    unique int id: @specifier,
+    unique string str: string ref
+);
+
+typespecifiers(
+    int type_id: @type ref,
+    int spec_id: @specifier ref
+);
+
+funspecifiers(
+    int func_id: @function ref,
+    int spec_id: @specifier ref
+);
+
+varspecifiers(
+    int var_id: @accessible ref,
+    int spec_id: @specifier ref
+);
+
+explicit_specifier_exprs(
+    unique int func_id: @function ref,
+    int constant: @expr ref
+)
+
+attributes(
+    unique int id: @attribute,
+    int kind: int ref,
+    string name: string ref,
+    string name_space: string ref,
+    int location: @location_default ref
+);
+
+case @attribute.kind of
+  0 = @gnuattribute
+| 1 = @stdattribute
+| 2 = @declspec
+| 3 = @msattribute
+| 4 = @alignas
+// ... 5 @objc_propertyattribute deprecated
+;
+
+attribute_args(
+    unique int id: @attribute_arg,
+    int kind: int ref,
+    int attribute: @attribute ref,
+    int index: int ref,
+    int location: @location_default ref
+);
+
+case @attribute_arg.kind of
+  0 = @attribute_arg_empty
+| 1 = @attribute_arg_token
+| 2 = @attribute_arg_constant
+| 3 = @attribute_arg_type
+| 4 = @attribute_arg_constant_expr
+| 5 = @attribute_arg_expr
+;
+
+attribute_arg_value(
+    unique int arg: @attribute_arg ref,
+    string value: string ref
+);
+attribute_arg_type(
+    unique int arg: @attribute_arg ref,
+    int type_id: @type ref
+);
+attribute_arg_constant(
+    unique int arg: @attribute_arg ref,
+    int constant: @expr ref
+)
+attribute_arg_expr(
+    unique int arg: @attribute_arg ref,
+    int expr: @expr ref
+)
+attribute_arg_name(
+    unique int arg: @attribute_arg ref,
+    string name: string ref
+);
+
+typeattributes(
+    int type_id: @type ref,
+    int spec_id: @attribute ref
+);
+
+funcattributes(
+    int func_id: @function ref,
+    int spec_id: @attribute ref
+);
+
+varattributes(
+    int var_id: @accessible ref,
+    int spec_id: @attribute ref
+);
+
+namespaceattributes(
+    int namespace_id: @namespace ref,
+    int spec_id: @attribute ref
+);
+
+stmtattributes(
+    int stmt_id: @stmt ref,
+    int spec_id: @attribute ref
+);
+
+@type = @builtintype
+      | @derivedtype
+      | @usertype
+      | @routinetype
+      | @ptrtomember
+      | @decltype
+      | @type_operator;
+
+unspecifiedtype(
+    unique int type_id: @type ref,
+    int unspecified_type_id: @type ref
+);
+
+member(
+    int parent: @type ref,
+    int index: int ref,
+    int child: @member ref
+);
+
+@enclosingfunction_child = @usertype | @variable | @namespace
+
+enclosingfunction(
+    unique int child: @enclosingfunction_child ref,
+    int parent: @function ref
+);
+
+derivations(
+    unique int derivation: @derivation,
+    int sub: @type ref,
+    int index: int ref,
+    int super: @type ref,
+    int location: @location_default ref
+);
+
+derspecifiers(
+    int der_id: @derivation ref,
+    int spec_id: @specifier ref
+);
+
+/**
+ * Contains the byte offset of the base class subobject within the derived
+ * class. Only holds for non-virtual base classes, but see table
+ * `virtual_base_offsets` for offsets of virtual base class subobjects.
+ */
+direct_base_offsets(
+    unique int der_id: @derivation ref,
+    int offset: int ref
+);
+
+/**
+ * Contains the byte offset of the virtual base class subobject for class
+ * `super` within a most-derived object of class `sub`. `super` can be either a
+ * direct or indirect base class.
+ */
+#keyset[sub, super]
+virtual_base_offsets(
+    int sub: @usertype ref,
+    int super: @usertype ref,
+    int offset: int ref
+);
+
+frienddecls(
+    unique int id: @frienddecl,
+    int type_id: @type ref,
+    int decl_id: @declaration ref,
+    int location: @location_default ref
+);
+
+@declaredtype = @usertype ;
+
+@declaration = @function
+             | @declaredtype
+             | @variable
+             | @enumconstant
+             | @frienddecl
+             | @concept_template;
+
+@member = @membervariable
+        | @function
+        | @declaredtype
+        | @enumconstant;
+
+@locatable = @diagnostic
+           | @declaration
+           | @ppd_include
+           | @ppd_define
+           | @macroinvocation
+           /*| @funcall*/
+           | @xmllocatable
+           | @attribute
+           | @attribute_arg;
+
+@namedscope = @namespace | @usertype;
+
+@element = @locatable
+         | @file
+         | @folder
+         | @specifier
+         | @type
+         | @expr
+         | @namespace
+         | @initialiser
+         | @stmt
+         | @derivation
+         | @comment
+         | @preprocdirect
+         | @fun_decl
+         | @var_decl
+         | @type_decl
+         | @namespace_decl
+         | @using
+         | @namequalifier
+         | @specialnamequalifyingelement
+         | @static_assert
+         | @type_mention
+         | @lambdacapture;
+
+@exprparent = @element;
+
+comments(
+    unique int id: @comment,
+    string contents: string ref,
+    int location: @location_default ref
+);
+
+commentbinding(
+    int id: @comment ref,
+    int element: @element ref
+);
+
+exprconv(
+    int converted: @expr ref,
+    unique int conversion: @expr ref
+);
+
+compgenerated(unique int id: @element ref);
+
+/**
+ * `destructor_call` destructs the `i`'th entity that should be
+ * destructed following `element`. Note that entities should be
+ * destructed in reverse construction order, so for a given `element`
+ * these should be called from highest to lowest `i`.
+ */
+#keyset[element, destructor_call]
+#keyset[element, i]
+synthetic_destructor_call(
+    int element: @element ref,
+    int i: int ref,
+    int destructor_call: @routineexpr ref
+);
+
+namespaces(
+    unique int id: @namespace,
+    string name: string ref
+);
+
+namespace_inline(
+    unique int id: @namespace ref
+);
+
+namespacembrs(
+    int parentid: @namespace ref,
+    unique int memberid: @namespacembr ref
+);
+
+@namespacembr = @declaration | @namespace;
+
+exprparents(
+    int expr_id: @expr ref,
+    int child_index: int ref,
+    int parent_id: @exprparent ref
+);
+
+expr_isload(unique int expr_id: @expr ref);
+
+@cast = @c_style_cast
+      | @const_cast
+      | @dynamic_cast
+      | @reinterpret_cast
+      | @static_cast
+      ;
+
+/*
+case @conversion.kind of
+  0 = @simple_conversion           // a numeric conversion, qualification conversion, or a reinterpret_cast
+| 1 = @bool_conversion             // conversion to 'bool'
+| 2 = @base_class_conversion       // a derived-to-base conversion
+| 3 = @derived_class_conversion    // a base-to-derived conversion
+| 4 = @pm_base_class_conversion    // a derived-to-base conversion of a pointer to member
+| 5 = @pm_derived_class_conversion // a base-to-derived conversion of a pointer to member
+| 6 = @glvalue_adjust              // an adjustment of the type of a glvalue
+| 7 = @prvalue_adjust              // an adjustment of the type of a prvalue
+;
+*/
+/**
+ * Describes the semantics represented by a cast expression. This is largely
+ * independent of the source syntax of the cast, so it is separate from the
+ * regular expression kind.
+ */
+conversionkinds(
+    unique int expr_id: @cast ref,
+    int kind: int ref
+);
+
+@conversion = @cast
+            | @array_to_pointer
+            | @parexpr
+            | @reference_to
+            | @ref_indirect
+            | @temp_init
+            | @c11_generic
+            ;
+
+/*
+case @funbindexpr.kind of
+  0 = @normal_call  // a normal call
+| 1 = @virtual_call // a virtual call
+| 2 = @adl_call     // a call whose target is only found by ADL
+;
+*/
+iscall(
+    unique int caller: @funbindexpr ref,
+    int kind: int ref
+);
+
+numtemplatearguments(
+    unique int expr_id: @expr ref,
+    int num: int ref
+);
+
+specialnamequalifyingelements(
+    unique int id: @specialnamequalifyingelement,
+    unique string name: string ref
+);
+
+@namequalifiableelement = @expr | @namequalifier;
+@namequalifyingelement = @namespace
+                       | @specialnamequalifyingelement
+                       | @usertype
+                       | @decltype;
+
+namequalifiers(
+    unique int id: @namequalifier,
+    unique int qualifiableelement: @namequalifiableelement ref,
+    int qualifyingelement: @namequalifyingelement ref,
+    int location: @location_default ref
+);
+
+varbind(
+    int expr: @varbindexpr ref,
+    int var: @accessible ref
+);
+
+funbind(
+    int expr: @funbindexpr ref,
+    int fun: @function ref
+);
+
+@any_new_expr = @new_expr
+              | @new_array_expr;
+
+@new_or_delete_expr = @any_new_expr
+                    | @delete_expr
+                    | @delete_array_expr;
+
+@prefix_crement_expr = @preincrexpr | @predecrexpr;
+
+@postfix_crement_expr = @postincrexpr | @postdecrexpr;
+
+@increment_expr = @preincrexpr | @postincrexpr;
+
+@decrement_expr = @predecrexpr | @postdecrexpr;
+
+@crement_expr = @increment_expr | @decrement_expr;
+
+@un_arith_op_expr = @arithnegexpr
+                  | @unaryplusexpr
+                  | @conjugation
+                  | @realpartexpr
+                  | @imagpartexpr
+                  | @crement_expr
+                  ;
+
+@un_bitwise_op_expr = @complementexpr;
+
+@un_log_op_expr = @notexpr;
+
+@un_op_expr = @address_of
+            | @indirect
+            | @un_arith_op_expr
+            | @un_bitwise_op_expr
+            | @builtinaddressof
+            | @vec_fill
+            | @un_log_op_expr
+            | @co_await
+            | @co_yield
+            ;
+
+@bin_log_op_expr = @andlogicalexpr | @orlogicalexpr;
+
+@cmp_op_expr = @eq_op_expr | @rel_op_expr;
+
+@eq_op_expr = @eqexpr | @neexpr;
+
+@rel_op_expr = @gtexpr
+             | @ltexpr
+             | @geexpr
+             | @leexpr
+             | @spaceshipexpr
+             ;
+
+@bin_bitwise_op_expr = @lshiftexpr
+                     | @rshiftexpr
+                     | @andexpr
+                     | @orexpr
+                     | @xorexpr
+                     ;
+
+@p_arith_op_expr = @paddexpr
+                 | @psubexpr
+                 | @pdiffexpr
+                 ;
+
+@bin_arith_op_expr = @addexpr
+                   | @subexpr
+                   | @mulexpr
+                   | @divexpr
+                   | @remexpr
+                   | @jmulexpr
+                   | @jdivexpr
+                   | @fjaddexpr
+                   | @jfaddexpr
+                   | @fjsubexpr
+                   | @jfsubexpr
+                   | @minexpr
+                   | @maxexpr
+                   | @p_arith_op_expr
+                   ;
+
+@bin_op_expr = @bin_arith_op_expr
+             | @bin_bitwise_op_expr
+             | @cmp_op_expr
+             | @bin_log_op_expr
+             ;
+
+@op_expr = @un_op_expr
+         | @bin_op_expr
+         | @assign_expr
+         | @conditionalexpr
+         ;
+
+@assign_arith_expr = @assignaddexpr
+                   | @assignsubexpr
+                   | @assignmulexpr
+                   | @assigndivexpr
+                   | @assignremexpr
+                   ;
+
+@assign_bitwise_expr = @assignandexpr
+                     | @assignorexpr
+                     | @assignxorexpr
+                     | @assignlshiftexpr
+                     | @assignrshiftexpr
+                     ;
+
+@assign_pointer_expr = @assignpaddexpr
+                     | @assignpsubexpr
+                     ;
+
+@assign_op_expr = @assign_arith_expr
+                | @assign_bitwise_expr
+                | @assign_pointer_expr
+                ;
+
+@assign_expr = @assignexpr | @assign_op_expr | @blockassignexpr
+
+/*
+  Binary encoding of the allocator form.
+
+  case @allocator.form of
+    0 = plain
+  | 1 = alignment
+  ;
+*/
+
+/**
+ * The allocator function associated with a `new` or `new[]` expression.
+ * The `form` column specified whether the allocation call contains an alignment
+ * argument.
+ */
+expr_allocator(
+    unique int expr: @any_new_expr ref,
+    int func: @function ref,
+    int form: int ref
+);
+
+/*
+  Binary encoding of the deallocator form.
+
+  case @deallocator.form of
+    0 = plain
+  | 1 = size
+  | 2 = alignment
+  | 4 = destroying_delete
+  ;
+*/
+
+/**
+ * The deallocator function associated with a `delete`, `delete[]`, `new`, or
+ * `new[]` expression. For a `new` or `new[]` expression, the deallocator is the
+ * one used to free memory if the initialization throws an exception.
+ * The `form` column specifies whether the deallocation call contains a size
+ * argument, and alignment argument, or both.
+ */
+expr_deallocator(
+    unique int expr: @new_or_delete_expr ref,
+    int func: @function ref,
+    int form: int ref
+);
+
+/**
+ * Holds if the `@conditionalexpr` is of the two operand form
+ * `guard ? : false`.
+ */
+expr_cond_two_operand(
+    unique int cond: @conditionalexpr ref
+);
+
+/**
+ * The guard of `@conditionalexpr` `guard ? true : false`
+ */
+expr_cond_guard(
+    unique int cond: @conditionalexpr ref,
+    int guard: @expr ref
+);
+
+/**
+ * The expression used when the guard of `@conditionalexpr`
+ * `guard ? true : false` holds. For the two operand form
+ * `guard ?: false` consider using `expr_cond_guard` instead.
+ */
+expr_cond_true(
+    unique int cond: @conditionalexpr ref,
+    int true: @expr ref
+);
+
+/**
+ * The expression used when the guard of `@conditionalexpr`
+ * `guard ? true : false` does not hold.
+ */
+expr_cond_false(
+    unique int cond: @conditionalexpr ref,
+    int false: @expr ref
+);
+
+/** A string representation of the value. */
+values(
+    unique int id: @value,
+    string str: string ref
+);
+
+/** The actual text in the source code for the value, if any. */
+valuetext(
+    unique int id: @value ref,
+    string text: string ref
+);
+
+valuebind(
+    int val: @value ref,
+    unique int expr: @expr ref
+);
+
+fieldoffsets(
+    unique int id: @variable ref,
+    int byteoffset: int ref,
+    int bitoffset: int ref
+);
+
+bitfield(
+    unique int id: @variable ref,
+    int bits: int ref,
+    int declared_bits: int ref
+);
+
+/* TODO
+memberprefix(
+    int member: @expr ref,
+    int prefix: @expr ref
+);
+*/
+
+/*
+   kind(1) = mbrcallexpr
+   kind(2) = mbrptrcallexpr
+   kind(3) = mbrptrmbrcallexpr
+   kind(4) = ptrmbrptrmbrcallexpr
+   kind(5) = mbrreadexpr // x.y
+   kind(6) = mbrptrreadexpr // p->y
+   kind(7) = mbrptrmbrreadexpr // x.*pm
+   kind(8) = mbrptrmbrptrreadexpr // x->*pm
+   kind(9) = staticmbrreadexpr // static x.y
+   kind(10) = staticmbrptrreadexpr // static p->y
+*/
+/* TODO
+memberaccess(
+    int member: @expr ref,
+    int kind: int ref
+);
+*/
+
+initialisers(
+    unique int init: @initialiser,
+    int var: @accessible ref,
+    unique int expr: @expr ref,
+    int location: @location_default ref
+);
+
+braced_initialisers(
+    int init: @initialiser ref
+);
+
+/**
+ * An ancestor for the expression, for cases in which we cannot
+ * otherwise find the expression's parent.
+ */
+expr_ancestor(
+    int exp: @expr ref,
+    int ancestor: @element ref
+);
+
+exprs(
+    unique int id: @expr,
+    int kind: int ref,
+    int location: @location_default ref
+);
+
+expr_reuse(
+    int reuse: @expr ref,
+    int original: @expr ref,
+    int value_category: int ref
+)
+
+/*
+  case @value.category of
+    1 = prval
+  | 2 = xval
+  | 3 = lval
+  ;
+*/
+expr_types(
+    int id: @expr ref,
+    int typeid: @type ref,
+    int value_category: int ref
+);
+
+case @expr.kind of
+    1 = @errorexpr
+|   2 = @address_of // & AddressOfExpr
+|   3 = @reference_to // ReferenceToExpr (implicit?)
+|   4 = @indirect // * PointerDereferenceExpr
+|   5 = @ref_indirect // ReferenceDereferenceExpr (implicit?)
+// ...
+|   8 = @array_to_pointer // (???)
+|   9 = @vacuous_destructor_call // VacuousDestructorCall
+// ...
+|  11 = @assume // Microsoft
+|  12 = @parexpr
+|  13 = @arithnegexpr
+|  14 = @unaryplusexpr
+|  15 = @complementexpr
+|  16 = @notexpr
+|  17 = @conjugation // GNU ~ operator
+|  18 = @realpartexpr // GNU __real
+|  19 = @imagpartexpr // GNU __imag
+|  20 = @postincrexpr
+|  21 = @postdecrexpr
+|  22 = @preincrexpr
+|  23 = @predecrexpr
+|  24 = @conditionalexpr
+|  25 = @addexpr
+|  26 = @subexpr
+|  27 = @mulexpr
+|  28 = @divexpr
+|  29 = @remexpr
+|  30 = @jmulexpr // C99 mul imaginary
+|  31 = @jdivexpr // C99 div imaginary
+|  32 = @fjaddexpr // C99 add real + imaginary
+|  33 = @jfaddexpr // C99 add imaginary + real
+|  34 = @fjsubexpr // C99 sub real - imaginary
+|  35 = @jfsubexpr // C99 sub imaginary - real
+|  36 = @paddexpr // pointer add (pointer + int or int + pointer)
+|  37 = @psubexpr // pointer sub (pointer - integer)
+|  38 = @pdiffexpr // difference between two pointers
+|  39 = @lshiftexpr
+|  40 = @rshiftexpr
+|  41 = @andexpr
+|  42 = @orexpr
+|  43 = @xorexpr
+|  44 = @eqexpr
+|  45 = @neexpr
+|  46 = @gtexpr
+|  47 = @ltexpr
+|  48 = @geexpr
+|  49 = @leexpr
+|  50 = @minexpr // GNU minimum
+|  51 = @maxexpr // GNU maximum
+|  52 = @assignexpr
+|  53 = @assignaddexpr
+|  54 = @assignsubexpr
+|  55 = @assignmulexpr
+|  56 = @assigndivexpr
+|  57 = @assignremexpr
+|  58 = @assignlshiftexpr
+|  59 = @assignrshiftexpr
+|  60 = @assignandexpr
+|  61 = @assignorexpr
+|  62 = @assignxorexpr
+|  63 = @assignpaddexpr // assign pointer add
+|  64 = @assignpsubexpr // assign pointer sub
+|  65 = @andlogicalexpr
+|  66 = @orlogicalexpr
+|  67 = @commaexpr
+|  68 = @subscriptexpr // access to member of an array, e.g., a[5]
+// ...  69 @objc_subscriptexpr deprecated
+// ...  70 @cmdaccess deprecated
+// ...
+|  73 = @virtfunptrexpr
+|  74 = @callexpr
+// ...  75 @msgexpr_normal deprecated
+// ...  76 @msgexpr_super deprecated
+// ...  77 @atselectorexpr deprecated
+// ...  78 @atprotocolexpr deprecated
+|  79 = @vastartexpr
+|  80 = @vaargexpr
+|  81 = @vaendexpr
+|  82 = @vacopyexpr
+// ...  83 @atencodeexpr deprecated
+|  84 = @varaccess
+|  85 = @thisaccess
+// ...  86 @objc_box_expr deprecated
+|  87 = @new_expr
+|  88 = @delete_expr
+|  89 = @throw_expr
+|  90 = @condition_decl // a variable declared in a condition, e.g., if(int x = y > 2)
+|  91 = @braced_init_list
+|  92 = @type_id
+|  93 = @runtime_sizeof
+|  94 = @runtime_alignof
+|  95 = @sizeof_pack
+|  96 = @expr_stmt // GNU extension
+|  97 = @routineexpr
+|  98 = @type_operand // used to access a type in certain contexts (haven't found any examples yet....)
+|  99 = @offsetofexpr // offsetof ::= type and field
+| 100 = @hasassignexpr // __has_assign ::= type
+| 101 = @hascopyexpr // __has_copy ::= type
+| 102 = @hasnothrowassign // __has_nothrow_assign ::= type
+| 103 = @hasnothrowconstr // __has_nothrow_constructor ::= type
+| 104 = @hasnothrowcopy // __has_nothrow_copy ::= type
+| 105 = @hastrivialassign // __has_trivial_assign ::= type
+| 106 = @hastrivialconstr // __has_trivial_constructor ::= type
+| 107 = @hastrivialcopy // __has_trivial_copy ::= type
+| 108 = @hasuserdestr // __has_user_destructor ::= type
+| 109 = @hasvirtualdestr // __has_virtual_destructor ::= type
+| 110 = @isabstractexpr // __is_abstract ::= type
+| 111 = @isbaseofexpr // __is_base_of ::= type type
+| 112 = @isclassexpr // __is_class ::= type
+| 113 = @isconvtoexpr // __is_convertible_to ::= type type
+| 114 = @isemptyexpr // __is_empty ::= type
+| 115 = @isenumexpr // __is_enum ::= type
+| 116 = @ispodexpr // __is_pod ::= type
+| 117 = @ispolyexpr // __is_polymorphic ::= type
+| 118 = @isunionexpr // __is_union ::= type
+| 119 = @typescompexpr // GNU __builtin_types_compatible ::= type type
+| 120 = @intaddrexpr // frontend internal builtin, used to implement offsetof
+// ...
+| 122 = @hastrivialdestructor // __has_trivial_destructor ::= type
+| 123 = @literal
+| 124 = @uuidof
+| 127 = @aggregateliteral
+| 128 = @delete_array_expr
+| 129 = @new_array_expr
+// ... 130 @objc_array_literal deprecated
+// ... 131 @objc_dictionary_literal deprecated
+| 132 = @foldexpr
+// ...
+| 200 = @ctordirectinit
+| 201 = @ctorvirtualinit
+| 202 = @ctorfieldinit
+| 203 = @ctordelegatinginit
+| 204 = @dtordirectdestruct
+| 205 = @dtorvirtualdestruct
+| 206 = @dtorfielddestruct
+// ...
+| 210 = @static_cast
+| 211 = @reinterpret_cast
+| 212 = @const_cast
+| 213 = @dynamic_cast
+| 214 = @c_style_cast
+| 215 = @lambdaexpr
+| 216 = @param_ref
+| 217 = @noopexpr
+// ...
+| 294 = @istriviallyconstructibleexpr
+| 295 = @isdestructibleexpr
+| 296 = @isnothrowdestructibleexpr
+| 297 = @istriviallydestructibleexpr
+| 298 = @istriviallyassignableexpr
+| 299 = @isnothrowassignableexpr
+| 300 = @istrivialexpr
+| 301 = @isstandardlayoutexpr
+| 302 = @istriviallycopyableexpr
+| 303 = @isliteraltypeexpr
+| 304 = @hastrivialmoveconstructorexpr
+| 305 = @hastrivialmoveassignexpr
+| 306 = @hasnothrowmoveassignexpr
+| 307 = @isconstructibleexpr
+| 308 = @isnothrowconstructibleexpr
+| 309 = @hasfinalizerexpr
+| 310 = @isdelegateexpr
+| 311 = @isinterfaceclassexpr
+| 312 = @isrefarrayexpr
+| 313 = @isrefclassexpr
+| 314 = @issealedexpr
+| 315 = @issimplevalueclassexpr
+| 316 = @isvalueclassexpr
+| 317 = @isfinalexpr
+| 319 = @noexceptexpr
+| 320 = @builtinshufflevector
+| 321 = @builtinchooseexpr
+| 322 = @builtinaddressof
+| 323 = @vec_fill
+| 324 = @builtinconvertvector
+| 325 = @builtincomplex
+| 326 = @spaceshipexpr
+| 327 = @co_await
+| 328 = @co_yield
+| 329 = @temp_init
+| 330 = @isassignable
+| 331 = @isaggregate
+| 332 = @hasuniqueobjectrepresentations
+| 333 = @builtinbitcast
+| 334 = @builtinshuffle
+| 335 = @blockassignexpr
+| 336 = @issame
+| 337 = @isfunction
+| 338 = @islayoutcompatible
+| 339 = @ispointerinterconvertiblebaseof
+| 340 = @isarray
+| 341 = @arrayrank
+| 342 = @arrayextent
+| 343 = @isarithmetic
+| 344 = @iscompletetype
+| 345 = @iscompound
+| 346 = @isconst
+| 347 = @isfloatingpoint
+| 348 = @isfundamental
+| 349 = @isintegral
+| 350 = @islvaluereference
+| 351 = @ismemberfunctionpointer
+| 352 = @ismemberobjectpointer
+| 353 = @ismemberpointer
+| 354 = @isobject
+| 355 = @ispointer
+| 356 = @isreference
+| 357 = @isrvaluereference
+| 358 = @isscalar
+| 359 = @issigned
+| 360 = @isunsigned
+| 361 = @isvoid
+| 362 = @isvolatile
+| 363 = @reuseexpr
+| 364 = @istriviallycopyassignable
+| 365 = @isassignablenopreconditioncheck
+| 366 = @referencebindstotemporary
+| 367 = @issameas
+| 368 = @builtinhasattribute
+| 369 = @ispointerinterconvertiblewithclass
+| 370 = @builtinispointerinterconvertiblewithclass
+| 371 = @iscorrespondingmember
+| 372 = @builtiniscorrespondingmember
+| 373 = @isboundedarray
+| 374 = @isunboundedarray
+| 375 = @isreferenceable
+| 378 = @isnothrowconvertible
+| 379 = @referenceconstructsfromtemporary
+| 380 = @referenceconvertsfromtemporary
+| 381 = @isconvertible
+| 382 = @isvalidwinrttype
+| 383 = @iswinclass
+| 384 = @iswininterface
+| 385 = @istriviallyequalitycomparable
+| 386 = @isscopedenum
+| 387 = @istriviallyrelocatable
+| 388 = @datasizeof
+| 389 = @c11_generic
+| 390 = @requires_expr
+| 391 = @nested_requirement
+| 392 = @compound_requirement
+| 393 = @concept_id
+;
+
+@var_args_expr = @vastartexpr
+               | @vaendexpr
+               | @vaargexpr
+               | @vacopyexpr
+               ;
+
+@builtin_op = @var_args_expr
+            | @noopexpr
+            | @offsetofexpr
+            | @intaddrexpr
+            | @hasassignexpr
+            | @hascopyexpr
+            | @hasnothrowassign
+            | @hasnothrowconstr
+            | @hasnothrowcopy
+            | @hastrivialassign
+            | @hastrivialconstr
+            | @hastrivialcopy
+            | @hastrivialdestructor
+            | @hasuserdestr
+            | @hasvirtualdestr
+            | @isabstractexpr
+            | @isbaseofexpr
+            | @isclassexpr
+            | @isconvtoexpr
+            | @isemptyexpr
+            | @isenumexpr
+            | @ispodexpr
+            | @ispolyexpr
+            | @isunionexpr
+            | @typescompexpr
+            | @builtinshufflevector
+            | @builtinconvertvector
+            | @builtinaddressof
+            | @istriviallyconstructibleexpr
+            | @isdestructibleexpr
+            | @isnothrowdestructibleexpr
+            | @istriviallydestructibleexpr
+            | @istriviallyassignableexpr
+            | @isnothrowassignableexpr
+            | @istrivialexpr
+            | @isstandardlayoutexpr
+            | @istriviallycopyableexpr
+            | @isliteraltypeexpr
+            | @hastrivialmoveconstructorexpr
+            | @hastrivialmoveassignexpr
+            | @hasnothrowmoveassignexpr
+            | @isconstructibleexpr
+            | @isnothrowconstructibleexpr
+            | @hasfinalizerexpr
+            | @isdelegateexpr
+            | @isinterfaceclassexpr
+            | @isrefarrayexpr
+            | @isrefclassexpr
+            | @issealedexpr
+            | @issimplevalueclassexpr
+            | @isvalueclassexpr
+            | @isfinalexpr
+            | @builtinchooseexpr
+            | @builtincomplex
+            | @isassignable
+            | @isaggregate
+            | @hasuniqueobjectrepresentations
+            | @builtinbitcast
+            | @builtinshuffle
+            | @issame
+            | @isfunction
+            | @islayoutcompatible
+            | @ispointerinterconvertiblebaseof
+            | @isarray
+            | @arrayrank
+            | @arrayextent
+            | @isarithmetic
+            | @iscompletetype
+            | @iscompound
+            | @isconst
+            | @isfloatingpoint
+            | @isfundamental
+            | @isintegral
+            | @islvaluereference
+            | @ismemberfunctionpointer
+            | @ismemberobjectpointer
+            | @ismemberpointer
+            | @isobject
+            | @ispointer
+            | @isreference
+            | @isrvaluereference
+            | @isscalar
+            | @issigned
+            | @isunsigned
+            | @isvoid
+            | @isvolatile
+            | @istriviallycopyassignable
+            | @isassignablenopreconditioncheck
+            | @referencebindstotemporary
+            | @issameas
+            | @builtinhasattribute
+            | @ispointerinterconvertiblewithclass
+            | @builtinispointerinterconvertiblewithclass
+            | @iscorrespondingmember
+            | @builtiniscorrespondingmember
+            | @isboundedarray
+            | @isunboundedarray
+            | @isreferenceable
+            | @isnothrowconvertible
+            | @referenceconstructsfromtemporary
+            | @referenceconvertsfromtemporary
+            | @isconvertible
+            | @isvalidwinrttype
+            | @iswinclass
+            | @iswininterface
+            | @istriviallyequalitycomparable
+            | @isscopedenum
+            | @istriviallyrelocatable
+            ;
+
+compound_requirement_is_noexcept(
+    int expr: @compound_requirement ref
+);
+
+new_allocated_type(
+    unique int expr: @new_expr ref,
+    int type_id: @type ref
+);
+
+new_array_allocated_type(
+    unique int expr: @new_array_expr ref,
+    int type_id: @type ref
+);
+
+/**
+ * The field being initialized by an initializer expression within an aggregate
+ * initializer for a class/struct/union. Position is used to sort repeated initializers.
+ */
+#keyset[aggregate, position]
+aggregate_field_init(
+    int aggregate: @aggregateliteral ref,
+    int initializer: @expr ref,
+    int field: @membervariable ref,
+    int position: int ref,
+    boolean is_designated: boolean ref
+);
+
+/**
+ * The index of the element being initialized by an initializer expression
+ * within an aggregate initializer for an array. Position is used to sort repeated initializers.
+ */
+#keyset[aggregate, position]
+aggregate_array_init(
+    int aggregate: @aggregateliteral ref,
+    int initializer: @expr ref,
+    int element_index: int ref,
+    int position: int ref,
+    boolean is_designated: boolean ref
+);
+
+@ctorinit = @ctordirectinit
+          | @ctorvirtualinit
+          | @ctorfieldinit
+          | @ctordelegatinginit;
+@dtordestruct = @dtordirectdestruct
+              | @dtorvirtualdestruct
+              | @dtorfielddestruct;
+
+
+condition_decl_bind(
+    unique int expr: @condition_decl ref,
+    unique int decl: @declaration ref
+);
+
+typeid_bind(
+    unique int expr: @type_id ref,
+    int type_id: @type ref
+);
+
+uuidof_bind(
+    unique int expr: @uuidof ref,
+    int type_id: @type ref
+);
+
+@sizeof_or_alignof = @runtime_sizeof | @runtime_alignof | @datasizeof | @sizeof_pack;
+
+sizeof_bind(
+    unique int expr: @sizeof_or_alignof ref,
+    int type_id: @type ref
+);
+
+code_block(
+    unique int block: @literal ref,
+    unique int routine: @function ref
+);
+
+lambdas(
+    unique int expr: @lambdaexpr ref,
+    string default_capture: string ref,
+    boolean has_explicit_return_type: boolean ref,
+    boolean has_explicit_parameter_list: boolean ref
+);
+
+lambda_capture(
+    unique int id: @lambdacapture,
+    int lambda: @lambdaexpr ref,
+    int index: int ref,
+    int field: @membervariable ref,
+    boolean captured_by_reference: boolean ref,
+    boolean is_implicit: boolean ref,
+    int location: @location_default ref
+);
+
+@funbindexpr = @routineexpr
+             | @new_expr
+             | @delete_expr
+             | @delete_array_expr
+             | @ctordirectinit
+             | @ctorvirtualinit
+             | @ctordelegatinginit
+             | @dtordirectdestruct
+             | @dtorvirtualdestruct;
+
+@varbindexpr = @varaccess | @ctorfieldinit | @dtorfielddestruct;
+@addressable = @function | @variable ;
+@accessible = @addressable | @enumconstant ;
+
+@access = @varaccess | @routineexpr ;
+
+fold(
+    int expr: @foldexpr ref,
+    string operator: string ref,
+    boolean is_left_fold: boolean ref
+);
+
+stmts(
+    unique int id: @stmt,
+    int kind: int ref,
+    int location: @location_default ref
+);
+
+case @stmt.kind of
+    1 = @stmt_expr
+|   2 = @stmt_if
+|   3 = @stmt_while
+|   4 = @stmt_goto
+|   5 = @stmt_label
+|   6 = @stmt_return
+|   7 = @stmt_block
+|   8 = @stmt_end_test_while // do { ... } while ( ... )
+|   9 = @stmt_for
+|  10 = @stmt_switch_case
+|  11 = @stmt_switch
+|  13 = @stmt_asm // "asm" statement or the body of an asm function
+|  15 = @stmt_try_block
+|  16 = @stmt_microsoft_try // Microsoft
+|  17 = @stmt_decl
+|  18 = @stmt_set_vla_size // C99
+|  19 = @stmt_vla_decl // C99
+|  25 = @stmt_assigned_goto // GNU
+|  26 = @stmt_empty
+|  27 = @stmt_continue
+|  28 = @stmt_break
+|  29 = @stmt_range_based_for // C++11
+// ...  30 @stmt_at_autoreleasepool_block deprecated
+// ...  31 @stmt_objc_for_in deprecated
+// ...  32 @stmt_at_synchronized deprecated
+|  33 = @stmt_handler
+// ...  34 @stmt_finally_end deprecated
+|  35 = @stmt_constexpr_if
+|  37 = @stmt_co_return
+|  38 = @stmt_consteval_if
+|  39 = @stmt_not_consteval_if
+|  40 = @stmt_leave
+;
+
+type_vla(
+    int type_id: @type ref,
+    int decl: @stmt_vla_decl ref
+);
+
+variable_vla(
+    int var: @variable ref,
+    int decl: @stmt_vla_decl ref
+);
+
+type_is_vla(unique int type_id: @derivedtype ref)
+
+if_initialization(
+    unique int if_stmt: @stmt_if ref,
+    int init_id: @stmt ref
+);
+
+if_then(
+    unique int if_stmt: @stmt_if ref,
+    int then_id: @stmt ref
+);
+
+if_else(
+    unique int if_stmt: @stmt_if ref,
+    int else_id: @stmt ref
+);
+
+constexpr_if_initialization(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int init_id: @stmt ref
+);
+
+constexpr_if_then(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int then_id: @stmt ref
+);
+
+constexpr_if_else(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int else_id: @stmt ref
+);
+
+@stmt_consteval_or_not_consteval_if = @stmt_consteval_if | @stmt_not_consteval_if;
+
+consteval_if_then(
+    unique int constexpr_if_stmt: @stmt_consteval_or_not_consteval_if ref,
+    int then_id: @stmt ref
+);
+
+consteval_if_else(
+    unique int constexpr_if_stmt: @stmt_consteval_or_not_consteval_if ref,
+    int else_id: @stmt ref
+);
+
+while_body(
+    unique int while_stmt: @stmt_while ref,
+    int body_id: @stmt ref
+);
+
+do_body(
+    unique int do_stmt: @stmt_end_test_while ref,
+    int body_id: @stmt ref
+);
+
+switch_initialization(
+    unique int switch_stmt: @stmt_switch ref,
+    int init_id: @stmt ref
+);
+
+#keyset[switch_stmt, index]
+switch_case(
+    int switch_stmt: @stmt_switch ref,
+    int index: int ref,
+    int case_id: @stmt_switch_case ref
+);
+
+switch_body(
+    unique int switch_stmt: @stmt_switch ref,
+    int body_id: @stmt ref
+);
+
+@stmt_for_or_range_based_for = @stmt_for
+                             | @stmt_range_based_for;
+
+for_initialization(
+    unique int for_stmt: @stmt_for_or_range_based_for ref,
+    int init_id: @stmt ref
+);
+
+for_condition(
+    unique int for_stmt: @stmt_for ref,
+    int condition_id: @expr ref
+);
+
+for_update(
+    unique int for_stmt: @stmt_for ref,
+    int update_id: @expr ref
+);
+
+for_body(
+    unique int for_stmt: @stmt_for ref,
+    int body_id: @stmt ref
+);
+
+@stmtparent = @stmt | @expr_stmt ;
+stmtparents(
+    unique int id: @stmt ref,
+    int index: int ref,
+    int parent: @stmtparent ref
+);
+
+ishandler(unique int block: @stmt_block ref);
+
+@cfgnode = @stmt | @expr | @function | @initialiser ;
+
+stmt_decl_bind(
+    int stmt: @stmt_decl ref,
+    int num: int ref,
+    int decl: @declaration ref
+);
+
+stmt_decl_entry_bind(
+    int stmt: @stmt_decl ref,
+    int num: int ref,
+    int decl_entry: @element ref
+);
+
+@parameterized_element = @function | @stmt_block | @requires_expr;
+
+blockscope(
+    unique int block: @stmt_block ref,
+    int enclosing: @parameterized_element ref
+);
+
+@jump = @stmt_goto | @stmt_break | @stmt_continue | @stmt_leave;
+
+@jumporlabel = @jump | @stmt_label | @literal;
+
+jumpinfo(
+    unique int id: @jumporlabel ref,
+    string str: string ref,
+    int target: @stmt ref
+);
+
+preprocdirects(
+    unique int id: @preprocdirect,
+    int kind: int ref,
+    int location: @location_default ref
+);
+case @preprocdirect.kind of
+   0 = @ppd_if
+|  1 = @ppd_ifdef
+|  2 = @ppd_ifndef
+|  3 = @ppd_elif
+|  4 = @ppd_else
+|  5 = @ppd_endif
+|  6 = @ppd_plain_include
+|  7 = @ppd_define
+|  8 = @ppd_undef
+|  9 = @ppd_line
+| 10 = @ppd_error
+| 11 = @ppd_pragma
+| 12 = @ppd_objc_import
+| 13 = @ppd_include_next
+| 14 = @ppd_ms_import
+| 15 = @ppd_elifdef
+| 16 = @ppd_elifndef
+| 18 = @ppd_warning
+;
+
+@ppd_include = @ppd_plain_include | @ppd_objc_import | @ppd_include_next | @ppd_ms_import;
+
+@ppd_branch = @ppd_if | @ppd_ifdef | @ppd_ifndef | @ppd_elif | @ppd_elifdef | @ppd_elifndef;
+
+preprocpair(
+    int begin : @ppd_branch ref,
+    int elseelifend : @preprocdirect ref
+);
+
+preproctrue(int branch : @ppd_branch ref);
+preprocfalse(int branch : @ppd_branch ref);
+
+preproctext(
+    unique int id: @preprocdirect ref,
+    string head: string ref,
+    string body: string ref
+);
+
+includes(
+    unique int id: @ppd_include ref,
+    int included: @file ref
+);
+
+link_targets(
+    int id: @link_target,
+    int binary: @file ref
+);
+
+link_parent(
+    int element : @element ref,
+    int link_target : @link_target ref
+);
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
diff --git a/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/semmlecode.dbscheme b/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/semmlecode.dbscheme
new file mode 100644
index 000000000000..d2d611b3fdcc
--- /dev/null
+++ b/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/semmlecode.dbscheme
@@ -0,0 +1,2469 @@
+
+/*- Compilations -*/
+
+/**
+ * An invocation of the compiler. Note that more than one file may be
+ * compiled per invocation. For example, this command compiles three
+ * source files:
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * The `id` simply identifies the invocation, while `cwd` is the working
+ * directory from which the compiler was invoked.
+ */
+compilations(
+    /**
+     * An invocation of the compiler. Note that more than one file may
+     * be compiled per invocation. For example, this command compiles
+     * three source files:
+     *
+     *   gcc -c f1.c f2.c f3.c
+     */
+    unique int id : @compilation,
+    string cwd : string ref
+);
+
+/**
+ * The arguments that were passed to the extractor for a compiler
+ * invocation. If `id` is for the compiler invocation
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * then typically there will be rows for
+ *
+ * num | arg
+ * --- | ---
+ * 0   | *path to extractor*
+ * 1   | `--mimic`
+ * 2   | `/usr/bin/gcc`
+ * 3   | `-c`
+ * 4   | f1.c
+ * 5   | f2.c
+ * 6   | f3.c
+ */
+#keyset[id, num]
+compilation_args(
+    int id : @compilation ref,
+    int num : int ref,
+    string arg : string ref
+);
+
+/**
+ * The expanded arguments that were passed to the extractor for a
+ * compiler invocation. This is similar to `compilation_args`, but
+ * for a `@someFile` argument, it includes the arguments from that
+ * file, rather than just taking the argument literally.
+ */
+#keyset[id, num]
+compilation_expanded_args(
+    int id : @compilation ref,
+    int num : int ref,
+    string arg : string ref
+);
+
+/**
+ * Optionally, record the build mode for each compilation.
+ */
+compilation_build_mode(
+    unique int id : @compilation ref,
+    int mode : int ref
+);
+
+/*
+case @compilation_build_mode.mode of
+  0 = @build_mode_none
+| 1 = @build_mode_manual
+| 2 = @build_mode_auto
+;
+*/
+
+/**
+ * The source files that are compiled by a compiler invocation.
+ * If `id` is for the compiler invocation
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * then there will be rows for
+ *
+ * num | arg
+ * --- | ---
+ * 0   | f1.c
+ * 1   | f2.c
+ * 2   | f3.c
+ *
+ * Note that even if those files `#include` headers, those headers
+ * do not appear as rows.
+ */
+#keyset[id, num]
+compilation_compiling_files(
+    int id : @compilation ref,
+    int num : int ref,
+    int file : @file ref
+);
+
+/**
+ * The time taken by the extractor for a compiler invocation.
+ *
+ * For each file `num`, there will be rows for
+ *
+ * kind | seconds
+ * ---- | ---
+ * 1    | CPU seconds used by the extractor frontend
+ * 2    | Elapsed seconds during the extractor frontend
+ * 3    | CPU seconds used by the extractor backend
+ * 4    | Elapsed seconds during the extractor backend
+ */
+#keyset[id, num, kind]
+compilation_time(
+    int id : @compilation ref,
+    int num : int ref,
+    /* kind:
+       1 = frontend_cpu_seconds
+       2 = frontend_elapsed_seconds
+       3 = extractor_cpu_seconds
+       4 = extractor_elapsed_seconds
+    */
+    int kind : int ref,
+    float seconds : float ref
+);
+
+/**
+ * An error or warning generated by the extractor.
+ * The diagnostic message `diagnostic` was generated during compiler
+ * invocation `compilation`, and is the `file_number_diagnostic_number`th
+ * message generated while extracting the `file_number`th file of that
+ * invocation.
+ */
+#keyset[compilation, file_number, file_number_diagnostic_number]
+diagnostic_for(
+    int diagnostic : @diagnostic ref,
+    int compilation : @compilation ref,
+    int file_number : int ref,
+    int file_number_diagnostic_number : int ref
+);
+
+/**
+ * If extraction was successful, then `cpu_seconds` and
+ * `elapsed_seconds` are the CPU time and elapsed time (respectively)
+ * that extraction took for compiler invocation `id`.
+ */
+compilation_finished(
+    unique int id : @compilation ref,
+    float cpu_seconds : float ref,
+    float elapsed_seconds : float ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- C++ dbscheme -*/
+
+extractor_version(
+    string codeql_version: string ref,
+    string frontend_version: string ref
+)
+
+pch_uses(
+    int pch: @pch ref,
+    int compilation: @compilation ref,
+    int id: @file ref
+)
+
+#keyset[pch, compilation]
+pch_creations(
+    int pch: @pch,
+    int compilation: @compilation ref,
+    int from: @file ref
+)
+
+/** An element for which line-count information is available. */
+@sourceline = @file | @function | @variable | @enumconstant | @xmllocatable;
+
+fileannotations(
+    int id: @file ref,
+    int kind: int ref,
+    string name: string ref,
+    string value: string ref
+);
+
+inmacroexpansion(
+    int id: @element ref,
+    int inv: @macroinvocation ref
+);
+
+affectedbymacroexpansion(
+    int id: @element ref,
+    int inv: @macroinvocation ref
+);
+
+case @macroinvocation.kind of
+  1 = @macro_expansion
+| 2 = @other_macro_reference
+;
+
+macroinvocations(
+    unique int id: @macroinvocation,
+    int macro_id: @ppd_define ref,
+    int location: @location_default ref,
+    int kind: int ref
+);
+
+macroparent(
+    unique int id: @macroinvocation ref,
+    int parent_id: @macroinvocation ref
+);
+
+// a macroinvocation may be part of another location
+// the way to find a constant expression that uses a macro
+// is thus to find a constant expression that has a location
+// to which a macro invocation is bound
+macrolocationbind(
+    int id: @macroinvocation ref,
+    int location: @location_default ref
+);
+
+#keyset[invocation, argument_index]
+macro_argument_unexpanded(
+    int invocation: @macroinvocation ref,
+    int argument_index: int ref,
+    string text: string ref
+);
+
+#keyset[invocation, argument_index]
+macro_argument_expanded(
+    int invocation: @macroinvocation ref,
+    int argument_index: int ref,
+    string text: string ref
+);
+
+case @function.kind of
+  0 = @unknown_function
+| 1 = @normal_function
+| 2 = @constructor
+| 3 = @destructor
+| 4 = @conversion_function
+| 5 = @operator
+// ... 6 = @builtin_function deprecated    // GCC built-in functions, e.g. __builtin___memcpy_chk
+| 7 = @user_defined_literal
+| 8 = @deduction_guide
+;
+
+functions(
+    unique int id: @function,
+    string name: string ref,
+    int kind: int ref
+);
+
+builtin_functions(
+    int id: @function ref
+)
+
+function_entry_point(
+    int id: @function ref,
+    unique int entry_point: @stmt ref
+);
+
+function_return_type(
+    int id: @function ref,
+    int return_type: @type ref
+);
+
+/**
+ * If `function` is a coroutine, then this gives the `std::experimental::resumable_traits`
+ * instance associated with it, and the variables representing the `handle` and `promise`
+ * for it.
+ */
+coroutine(
+  unique int function: @function ref,
+  int traits: @type ref
+);
+
+/*
+case @coroutine_placeholder_variable.kind of
+  1 = @handle
+| 2 = @promise
+| 3 = @init_await_resume
+;
+*/
+
+coroutine_placeholder_variable(
+  unique int placeholder_variable: @variable ref,
+  int kind: int ref,
+  int function: @function ref
+)
+
+/** The `new` function used for allocating the coroutine state, if any. */
+coroutine_new(
+  unique int function: @function ref,
+  int new: @function ref
+);
+
+/** The `delete` function used for deallocating the coroutine state, if any. */
+coroutine_delete(
+  unique int function: @function ref,
+  int delete: @function ref
+);
+
+purefunctions(unique int id: @function ref);
+
+function_deleted(unique int id: @function ref);
+
+function_defaulted(unique int id: @function ref);
+
+function_prototyped(unique int id: @function ref)
+
+deduction_guide_for_class(
+    int id: @function ref,
+    int class_template: @usertype ref
+)
+
+member_function_this_type(
+    unique int id: @function ref,
+    int this_type: @type ref
+);
+
+#keyset[id, type_id]
+fun_decls(
+    int id: @fun_decl,
+    int function: @function ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+fun_def(unique int id: @fun_decl ref);
+fun_specialized(unique int id: @fun_decl ref);
+fun_implicit(unique int id: @fun_decl ref);
+fun_decl_specifiers(
+    int id: @fun_decl ref,
+    string name: string ref
+)
+#keyset[fun_decl, index]
+fun_decl_throws(
+    int fun_decl: @fun_decl ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+/* an empty throw specification is different from none */
+fun_decl_empty_throws(unique int fun_decl: @fun_decl ref);
+fun_decl_noexcept(
+    int fun_decl: @fun_decl ref,
+    int constant: @expr ref
+);
+fun_decl_empty_noexcept(int fun_decl: @fun_decl ref);
+fun_decl_typedef_type(
+    unique int fun_decl: @fun_decl ref,
+    int typedeftype_id: @usertype ref
+);
+
+/*
+case @fun_requires.kind of
+  1 = @template_attached
+| 2 = @function_attached
+;
+*/
+
+fun_requires(
+    int id: @fun_decl ref,
+    int kind: int ref,
+    int constraint: @expr ref
+);
+
+param_decl_bind(
+    unique int id: @var_decl ref,
+    int index: int ref,
+    int fun_decl: @fun_decl ref
+);
+
+#keyset[id, type_id]
+var_decls(
+    int id: @var_decl,
+    int variable: @variable ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+var_def(unique int id: @var_decl ref);
+var_specialized(int id: @var_decl ref);
+var_decl_specifiers(
+    int id: @var_decl ref,
+    string name: string ref
+)
+is_structured_binding(unique int id: @variable ref);
+var_requires(
+    int id: @var_decl ref,
+    int constraint: @expr ref
+);
+
+type_decls(
+    unique int id: @type_decl,
+    int type_id: @type ref,
+    int location: @location_default ref
+);
+type_def(unique int id: @type_decl ref);
+type_decl_top(
+    unique int type_decl: @type_decl ref
+);
+type_requires(
+    int id: @type_decl ref,
+    int constraint: @expr ref
+);
+
+namespace_decls(
+    unique int id: @namespace_decl,
+    int namespace_id: @namespace ref,
+    int location: @location_default ref,
+    int bodylocation: @location_default ref
+);
+
+case @using.kind of
+  1 = @using_declaration
+| 2 = @using_directive
+| 3 = @using_enum_declaration
+;
+
+usings(
+    unique int id: @using,
+    int element_id: @element ref,
+    int location: @location_default ref,
+    int kind: int ref
+);
+
+/** The element which contains the `using` declaration. */
+using_container(
+    int parent: @element ref,
+    int child: @using ref
+);
+
+static_asserts(
+    unique int id: @static_assert,
+    int condition : @expr ref,
+    string message : string ref,
+    int location: @location_default ref,
+    int enclosing : @element ref
+);
+
+// each function has an ordered list of parameters
+#keyset[id, type_id]
+#keyset[function, index, type_id]
+params(
+    int id: @parameter,
+    int function: @parameterized_element ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+
+overrides(
+    int new: @function ref,
+    int old: @function ref
+);
+
+#keyset[id, type_id]
+membervariables(
+    int id: @membervariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+#keyset[id, type_id]
+globalvariables(
+    int id: @globalvariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+#keyset[id, type_id]
+localvariables(
+    int id: @localvariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+autoderivation(
+    unique int var: @variable ref,
+    int derivation_type: @type ref
+);
+
+orphaned_variables(
+    int var: @localvariable ref,
+    int function: @function ref
+)
+
+enumconstants(
+    unique int id: @enumconstant,
+    int parent: @usertype ref,
+    int index: int ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+
+@variable = @localscopevariable | @globalvariable | @membervariable;
+
+@localscopevariable = @localvariable | @parameter;
+
+/**
+ * Built-in types are the fundamental types, e.g., integral, floating, and void.
+ */
+case @builtintype.kind of
+   1 = @errortype
+|  2 = @unknowntype
+|  3 = @void
+|  4 = @boolean
+|  5 = @char
+|  6 = @unsigned_char
+|  7 = @signed_char
+|  8 = @short
+|  9 = @unsigned_short
+| 10 = @signed_short
+| 11 = @int
+| 12 = @unsigned_int
+| 13 = @signed_int
+| 14 = @long
+| 15 = @unsigned_long
+| 16 = @signed_long
+| 17 = @long_long
+| 18 = @unsigned_long_long
+| 19 = @signed_long_long
+// ... 20 Microsoft-specific __int8
+// ... 21 Microsoft-specific __int16
+// ... 22 Microsoft-specific __int32
+// ... 23 Microsoft-specific __int64
+| 24 = @float
+| 25 = @double
+| 26 = @long_double
+| 27 = @complex_float         // C99-specific _Complex float
+| 28 = @complex_double        // C99-specific _Complex double
+| 29 = @complex_long_double   // C99-specific _Complex long double
+| 30 = @imaginary_float       // C99-specific _Imaginary float
+| 31 = @imaginary_double      // C99-specific _Imaginary double
+| 32 = @imaginary_long_double // C99-specific _Imaginary long double
+| 33 = @wchar_t               // Microsoft-specific
+| 34 = @decltype_nullptr      // C++11
+| 35 = @int128                // __int128
+| 36 = @unsigned_int128       // unsigned __int128
+| 37 = @signed_int128         // signed __int128
+| 38 = @float128              // __float128
+| 39 = @complex_float128      // _Complex __float128
+// ... 40 _Decimal32
+// ... 41 _Decimal64
+// ... 42 _Decimal128
+| 43 = @char16_t
+| 44 = @char32_t
+| 45 = @std_float32           // _Float32
+| 46 = @float32x              // _Float32x
+| 47 = @std_float64           // _Float64
+| 48 = @float64x              // _Float64x
+| 49 = @std_float128          // _Float128
+// ... 50 _Float128x
+| 51 = @char8_t
+| 52 = @float16               // _Float16
+| 53 = @complex_float16       // _Complex _Float16
+| 54 = @fp16                  // __fp16
+| 55 = @std_bfloat16          // __bf16
+| 56 = @std_float16           // std::float16_t
+| 57 = @complex_std_float32   // _Complex _Float32
+| 58 = @complex_float32x      // _Complex _Float32x
+| 59 = @complex_std_float64   // _Complex _Float64
+| 60 = @complex_float64x      // _Complex _Float64x
+| 61 = @complex_std_float128  // _Complex _Float128
+| 62 = @mfp8                  // __mfp8
+| 63 = @scalable_vector_count // __SVCount_t
+| 64 = @complex_fp16          // _Complex __fp16
+| 65 = @complex_std_bfloat16  // _Complex __bf16
+| 66 = @complex_std_float16   // _Complex std::float16_t
+;
+
+builtintypes(
+    unique int id: @builtintype,
+    string name: string ref,
+    int kind: int ref,
+    int size: int ref,
+    int sign: int ref,
+    int alignment: int ref
+);
+
+/**
+ * Derived types are types that are directly derived from existing types and
+ * point to, refer to, transform type data to return a new type.
+ */
+case @derivedtype.kind of
+   1 = @pointer
+|  2 = @reference
+|  3 = @type_with_specifiers
+|  4 = @array
+|  5 = @gnu_vector
+|  6 = @routineptr
+|  7 = @routinereference
+|  8 = @rvalue_reference // C++11
+// ... 9 type_conforming_to_protocols deprecated
+| 10 = @block
+| 11 = @scalable_vector // Arm SVE
+;
+
+derivedtypes(
+    unique int id: @derivedtype,
+    string name: string ref,
+    int kind: int ref,
+    int type_id: @type ref
+);
+
+pointerishsize(unique int id: @derivedtype ref,
+    int size: int ref,
+    int alignment: int ref);
+
+arraysizes(
+    unique int id: @derivedtype ref,
+    int num_elements: int ref,
+    int bytesize: int ref,
+    int alignment: int ref
+);
+
+tupleelements(
+    unique int id: @derivedtype ref,
+    int num_elements: int ref
+);
+
+typedefbase(
+    unique int id: @usertype ref,
+    int type_id: @type ref
+);
+
+/**
+ * An instance of the C++11 `decltype` operator or C23 `typeof`/`typeof_unqual`
+ * operator taking an expression as its argument.  For example:
+ * ```
+ * int a;
+ * decltype(1+a) b;
+ * typeof(1+a) c;
+ * ```
+ * Here `expr` is `1+a`.
+ *
+ * Sometimes an additional pair of parentheses around the expression
+ * changes the semantics of the decltype, e.g.
+ * ```
+ * struct A { double x; };
+ * const A* a = new A();
+ * decltype( a->x ); // type is double
+ * decltype((a->x)); // type is const double&
+ * ```
+ * (Please consult the C++11 standard for more details).
+ * `parentheses_would_change_meaning` is `true` iff that is the case.
+ */
+
+/*
+case @decltype.kind of
+|  0 = @decltype
+|  1 = @typeof // The frontend does not differentiate between typeof and typeof_unqual
+;
+*/
+
+#keyset[id, expr]
+decltypes(
+    int id: @decltype,
+    int expr: @expr ref,
+    int kind: int ref,
+    int base_type: @type ref,
+    boolean parentheses_would_change_meaning: boolean ref
+);
+
+case @type_operator.kind of
+   0 = @typeof // The frontend does not differentiate between typeof and typeof_unqual
+|  1 = @underlying_type
+|  2 = @bases
+|  3 = @direct_bases
+|  4 = @add_lvalue_reference
+|  5 = @add_pointer
+|  6 = @add_rvalue_reference
+|  7 = @decay
+|  8 = @make_signed
+|  9 = @make_unsigned
+| 10 = @remove_all_extents
+| 11 = @remove_const
+| 12 = @remove_cv
+| 13 = @remove_cvref
+| 14 = @remove_extent
+| 15 = @remove_pointer
+| 16 = @remove_reference_t
+| 17 = @remove_restrict
+| 18 = @remove_volatile
+| 19 = @remove_reference
+;
+
+type_operators(
+    unique int id: @type_operator,
+    int arg_type: @type ref,
+    int kind: int ref,
+    int base_type: @type ref
+)
+
+case @usertype.kind of
+   0 = @unknown_usertype
+|  1 = @struct
+|  2 = @class
+|  3 = @union
+|  4 = @enum
+// ... 5 = @typedef deprecated        // classic C: typedef typedef type name
+// ... 6 = @template deprecated
+|  7 = @template_parameter
+|  8 = @template_template_parameter
+|  9 = @proxy_class                   // a proxy class associated with a template parameter
+// ... 10 objc_class deprecated
+// ... 11 objc_protocol deprecated
+// ... 12 objc_category deprecated
+| 13 = @scoped_enum
+// ... 14 = @using_alias deprecated   // a using name = type style typedef
+| 15 = @template_struct
+| 16 = @template_class
+| 17 = @template_union
+| 18 = @alias
+;
+
+usertypes(
+    unique int id: @usertype,
+    string name: string ref,
+    int kind: int ref
+);
+
+usertypesize(
+    unique int id: @usertype ref,
+    int size: int ref,
+    int alignment: int ref
+);
+
+usertype_final(unique int id: @usertype ref);
+
+usertype_uuid(
+    unique int id: @usertype ref,
+    string uuid: string ref
+);
+
+/*
+case @usertype.alias_kind of
+| 0 = @typedef
+| 1 = @alias
+*/
+
+usertype_alias_kind(
+    int id: @usertype ref,
+    int alias_kind: int ref
+)
+
+nontype_template_parameters(
+    int id: @expr ref
+);
+
+type_template_type_constraint(
+    int id: @usertype ref,
+    int constraint: @expr ref
+);
+
+mangled_name(
+    unique int id: @declaration ref,
+    int mangled_name : @mangledname,
+    boolean is_complete: boolean ref
+);
+
+is_pod_class(unique int id: @usertype ref);
+is_standard_layout_class(unique int id: @usertype ref);
+
+is_complete(unique int id: @usertype ref);
+
+is_class_template(unique int id: @usertype ref);
+class_instantiation(
+    int to: @usertype ref,
+    int from: @usertype ref
+);
+class_template_argument(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+class_template_argument_value(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+@user_or_decltype = @usertype | @decltype;
+
+is_proxy_class_for(
+    unique int id: @usertype ref,
+    int templ_param_id: @user_or_decltype ref
+);
+
+type_mentions(
+    unique int id: @type_mention,
+    int type_id: @type ref,
+    int location: @location_default ref,
+    // a_symbol_reference_kind from the frontend.
+    int kind: int ref
+);
+
+is_function_template(unique int id: @function ref);
+function_instantiation(
+    unique int to: @function ref,
+    int from: @function ref
+);
+function_template_argument(
+    int function_id: @function ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+function_template_argument_value(
+    int function_id: @function ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+is_variable_template(unique int id: @variable ref);
+variable_instantiation(
+    unique int to: @variable ref,
+    int from: @variable ref
+);
+variable_template_argument(
+    int variable_id: @variable ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+variable_template_argument_value(
+    int variable_id: @variable ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+template_template_instantiation(
+    int to: @usertype ref,
+    int from: @usertype ref
+);
+template_template_argument(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+template_template_argument_value(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+@concept = @concept_template | @concept_id;
+
+concept_templates(
+    unique int concept_id: @concept_template,
+    string name: string ref,
+    int location: @location_default ref
+);
+concept_instantiation(
+    unique int to: @concept_id ref,
+    int from: @concept_template ref
+);
+is_type_constraint(int concept_id: @concept_id ref);
+concept_template_argument(
+    int concept_id: @concept ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+concept_template_argument_value(
+    int concept_id: @concept ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+routinetypes(
+    unique int id: @routinetype,
+    int return_type: @type ref
+);
+
+routinetypeargs(
+    int routine: @routinetype ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+
+ptrtomembers(
+    unique int id: @ptrtomember,
+    int type_id: @type ref,
+    int class_id: @type ref
+);
+
+/*
+ specifiers for types, functions, and variables
+
+    "public",
+    "protected",
+    "private",
+
+    "const",
+    "volatile",
+    "static",
+
+    "pure",
+    "virtual",
+    "sealed", // Microsoft
+    "__interface", // Microsoft
+    "inline",
+    "explicit",
+
+    "near", // near far extension
+    "far", // near far extension
+    "__ptr32", // Microsoft
+    "__ptr64", // Microsoft
+    "__sptr", // Microsoft
+    "__uptr", // Microsoft
+    "dllimport", // Microsoft
+    "dllexport", // Microsoft
+    "thread", // Microsoft
+    "naked", // Microsoft
+    "microsoft_inline", // Microsoft
+    "forceinline", // Microsoft
+    "selectany", // Microsoft
+    "nothrow", // Microsoft
+    "novtable", // Microsoft
+    "noreturn", // Microsoft
+    "noinline", // Microsoft
+    "noalias", // Microsoft
+    "restrict", // Microsoft
+*/
+
+specifiers(
+    unique int id: @specifier,
+    unique string str: string ref
+);
+
+typespecifiers(
+    int type_id: @type ref,
+    int spec_id: @specifier ref
+);
+
+funspecifiers(
+    int func_id: @function ref,
+    int spec_id: @specifier ref
+);
+
+varspecifiers(
+    int var_id: @accessible ref,
+    int spec_id: @specifier ref
+);
+
+explicit_specifier_exprs(
+    unique int func_id: @function ref,
+    int constant: @expr ref
+)
+
+attributes(
+    unique int id: @attribute,
+    int kind: int ref,
+    string name: string ref,
+    string name_space: string ref,
+    int location: @location_default ref
+);
+
+case @attribute.kind of
+  0 = @gnuattribute
+| 1 = @stdattribute
+| 2 = @declspec
+| 3 = @msattribute
+| 4 = @alignas
+// ... 5 @objc_propertyattribute deprecated
+;
+
+attribute_args(
+    unique int id: @attribute_arg,
+    int kind: int ref,
+    int attribute: @attribute ref,
+    int index: int ref,
+    int location: @location_default ref
+);
+
+case @attribute_arg.kind of
+  0 = @attribute_arg_empty
+| 1 = @attribute_arg_token
+| 2 = @attribute_arg_constant
+| 3 = @attribute_arg_type
+| 4 = @attribute_arg_constant_expr
+| 5 = @attribute_arg_expr
+;
+
+attribute_arg_value(
+    unique int arg: @attribute_arg ref,
+    string value: string ref
+);
+attribute_arg_type(
+    unique int arg: @attribute_arg ref,
+    int type_id: @type ref
+);
+attribute_arg_constant(
+    unique int arg: @attribute_arg ref,
+    int constant: @expr ref
+)
+attribute_arg_expr(
+    unique int arg: @attribute_arg ref,
+    int expr: @expr ref
+)
+attribute_arg_name(
+    unique int arg: @attribute_arg ref,
+    string name: string ref
+);
+
+typeattributes(
+    int type_id: @type ref,
+    int spec_id: @attribute ref
+);
+
+funcattributes(
+    int func_id: @function ref,
+    int spec_id: @attribute ref
+);
+
+varattributes(
+    int var_id: @accessible ref,
+    int spec_id: @attribute ref
+);
+
+namespaceattributes(
+    int namespace_id: @namespace ref,
+    int spec_id: @attribute ref
+);
+
+stmtattributes(
+    int stmt_id: @stmt ref,
+    int spec_id: @attribute ref
+);
+
+@type = @builtintype
+      | @derivedtype
+      | @usertype
+      | @routinetype
+      | @ptrtomember
+      | @decltype
+      | @type_operator;
+
+unspecifiedtype(
+    unique int type_id: @type ref,
+    int unspecified_type_id: @type ref
+);
+
+member(
+    int parent: @type ref,
+    int index: int ref,
+    int child: @member ref
+);
+
+@enclosingfunction_child = @usertype | @variable | @namespace
+
+enclosingfunction(
+    unique int child: @enclosingfunction_child ref,
+    int parent: @function ref
+);
+
+derivations(
+    unique int derivation: @derivation,
+    int sub: @type ref,
+    int index: int ref,
+    int super: @type ref,
+    int location: @location_default ref
+);
+
+derspecifiers(
+    int der_id: @derivation ref,
+    int spec_id: @specifier ref
+);
+
+/**
+ * Contains the byte offset of the base class subobject within the derived
+ * class. Only holds for non-virtual base classes, but see table
+ * `virtual_base_offsets` for offsets of virtual base class subobjects.
+ */
+direct_base_offsets(
+    unique int der_id: @derivation ref,
+    int offset: int ref
+);
+
+/**
+ * Contains the byte offset of the virtual base class subobject for class
+ * `super` within a most-derived object of class `sub`. `super` can be either a
+ * direct or indirect base class.
+ */
+#keyset[sub, super]
+virtual_base_offsets(
+    int sub: @usertype ref,
+    int super: @usertype ref,
+    int offset: int ref
+);
+
+frienddecls(
+    unique int id: @frienddecl,
+    int type_id: @type ref,
+    int decl_id: @declaration ref,
+    int location: @location_default ref
+);
+
+@declaredtype = @usertype ;
+
+@declaration = @function
+             | @declaredtype
+             | @variable
+             | @enumconstant
+             | @frienddecl
+             | @concept_template;
+
+@member = @membervariable
+        | @function
+        | @declaredtype
+        | @enumconstant;
+
+@locatable = @diagnostic
+           | @declaration
+           | @ppd_include
+           | @ppd_define
+           | @macroinvocation
+           /*| @funcall*/
+           | @xmllocatable
+           | @attribute
+           | @attribute_arg;
+
+@namedscope = @namespace | @usertype;
+
+@element = @locatable
+         | @file
+         | @folder
+         | @specifier
+         | @type
+         | @expr
+         | @namespace
+         | @initialiser
+         | @stmt
+         | @derivation
+         | @comment
+         | @preprocdirect
+         | @fun_decl
+         | @var_decl
+         | @type_decl
+         | @namespace_decl
+         | @using
+         | @namequalifier
+         | @specialnamequalifyingelement
+         | @static_assert
+         | @type_mention
+         | @lambdacapture;
+
+@exprparent = @element;
+
+comments(
+    unique int id: @comment,
+    string contents: string ref,
+    int location: @location_default ref
+);
+
+commentbinding(
+    int id: @comment ref,
+    int element: @element ref
+);
+
+exprconv(
+    int converted: @expr ref,
+    unique int conversion: @expr ref
+);
+
+compgenerated(unique int id: @element ref);
+
+/**
+ * `destructor_call` destructs the `i`'th entity that should be
+ * destructed following `element`. Note that entities should be
+ * destructed in reverse construction order, so for a given `element`
+ * these should be called from highest to lowest `i`.
+ */
+#keyset[element, destructor_call]
+#keyset[element, i]
+synthetic_destructor_call(
+    int element: @element ref,
+    int i: int ref,
+    int destructor_call: @routineexpr ref
+);
+
+namespaces(
+    unique int id: @namespace,
+    string name: string ref
+);
+
+namespace_inline(
+    unique int id: @namespace ref
+);
+
+namespacembrs(
+    int parentid: @namespace ref,
+    unique int memberid: @namespacembr ref
+);
+
+@namespacembr = @declaration | @namespace;
+
+exprparents(
+    int expr_id: @expr ref,
+    int child_index: int ref,
+    int parent_id: @exprparent ref
+);
+
+expr_isload(unique int expr_id: @expr ref);
+
+@cast = @c_style_cast
+      | @const_cast
+      | @dynamic_cast
+      | @reinterpret_cast
+      | @static_cast
+      ;
+
+/*
+case @conversion.kind of
+  0 = @simple_conversion           // a numeric conversion, qualification conversion, or a reinterpret_cast
+| 1 = @bool_conversion             // conversion to 'bool'
+| 2 = @base_class_conversion       // a derived-to-base conversion
+| 3 = @derived_class_conversion    // a base-to-derived conversion
+| 4 = @pm_base_class_conversion    // a derived-to-base conversion of a pointer to member
+| 5 = @pm_derived_class_conversion // a base-to-derived conversion of a pointer to member
+| 6 = @glvalue_adjust              // an adjustment of the type of a glvalue
+| 7 = @prvalue_adjust              // an adjustment of the type of a prvalue
+;
+*/
+/**
+ * Describes the semantics represented by a cast expression. This is largely
+ * independent of the source syntax of the cast, so it is separate from the
+ * regular expression kind.
+ */
+conversionkinds(
+    unique int expr_id: @cast ref,
+    int kind: int ref
+);
+
+@conversion = @cast
+            | @array_to_pointer
+            | @parexpr
+            | @reference_to
+            | @ref_indirect
+            | @temp_init
+            | @c11_generic
+            ;
+
+/*
+case @funbindexpr.kind of
+  0 = @normal_call  // a normal call
+| 1 = @virtual_call // a virtual call
+| 2 = @adl_call     // a call whose target is only found by ADL
+;
+*/
+iscall(
+    unique int caller: @funbindexpr ref,
+    int kind: int ref
+);
+
+numtemplatearguments(
+    unique int expr_id: @expr ref,
+    int num: int ref
+);
+
+specialnamequalifyingelements(
+    unique int id: @specialnamequalifyingelement,
+    unique string name: string ref
+);
+
+@namequalifiableelement = @expr | @namequalifier;
+@namequalifyingelement = @namespace
+                       | @specialnamequalifyingelement
+                       | @usertype
+                       | @decltype;
+
+namequalifiers(
+    unique int id: @namequalifier,
+    unique int qualifiableelement: @namequalifiableelement ref,
+    int qualifyingelement: @namequalifyingelement ref,
+    int location: @location_default ref
+);
+
+varbind(
+    int expr: @varbindexpr ref,
+    int var: @accessible ref
+);
+
+funbind(
+    int expr: @funbindexpr ref,
+    int fun: @function ref
+);
+
+@any_new_expr = @new_expr
+              | @new_array_expr;
+
+@new_or_delete_expr = @any_new_expr
+                    | @delete_expr
+                    | @delete_array_expr;
+
+@prefix_crement_expr = @preincrexpr | @predecrexpr;
+
+@postfix_crement_expr = @postincrexpr | @postdecrexpr;
+
+@increment_expr = @preincrexpr | @postincrexpr;
+
+@decrement_expr = @predecrexpr | @postdecrexpr;
+
+@crement_expr = @increment_expr | @decrement_expr;
+
+@un_arith_op_expr = @arithnegexpr
+                  | @unaryplusexpr
+                  | @conjugation
+                  | @realpartexpr
+                  | @imagpartexpr
+                  | @crement_expr
+                  ;
+
+@un_bitwise_op_expr = @complementexpr;
+
+@un_log_op_expr = @notexpr;
+
+@un_op_expr = @address_of
+            | @indirect
+            | @un_arith_op_expr
+            | @un_bitwise_op_expr
+            | @builtinaddressof
+            | @vec_fill
+            | @un_log_op_expr
+            | @co_await
+            | @co_yield
+            ;
+
+@bin_log_op_expr = @andlogicalexpr | @orlogicalexpr;
+
+@cmp_op_expr = @eq_op_expr | @rel_op_expr;
+
+@eq_op_expr = @eqexpr | @neexpr;
+
+@rel_op_expr = @gtexpr
+             | @ltexpr
+             | @geexpr
+             | @leexpr
+             | @spaceshipexpr
+             ;
+
+@bin_bitwise_op_expr = @lshiftexpr
+                     | @rshiftexpr
+                     | @andexpr
+                     | @orexpr
+                     | @xorexpr
+                     ;
+
+@p_arith_op_expr = @paddexpr
+                 | @psubexpr
+                 | @pdiffexpr
+                 ;
+
+@bin_arith_op_expr = @addexpr
+                   | @subexpr
+                   | @mulexpr
+                   | @divexpr
+                   | @remexpr
+                   | @jmulexpr
+                   | @jdivexpr
+                   | @fjaddexpr
+                   | @jfaddexpr
+                   | @fjsubexpr
+                   | @jfsubexpr
+                   | @minexpr
+                   | @maxexpr
+                   | @p_arith_op_expr
+                   ;
+
+@bin_op_expr = @bin_arith_op_expr
+             | @bin_bitwise_op_expr
+             | @cmp_op_expr
+             | @bin_log_op_expr
+             ;
+
+@op_expr = @un_op_expr
+         | @bin_op_expr
+         | @assign_expr
+         | @conditionalexpr
+         ;
+
+@assign_arith_expr = @assignaddexpr
+                   | @assignsubexpr
+                   | @assignmulexpr
+                   | @assigndivexpr
+                   | @assignremexpr
+                   ;
+
+@assign_bitwise_expr = @assignandexpr
+                     | @assignorexpr
+                     | @assignxorexpr
+                     | @assignlshiftexpr
+                     | @assignrshiftexpr
+                     ;
+
+@assign_pointer_expr = @assignpaddexpr
+                     | @assignpsubexpr
+                     ;
+
+@assign_op_expr = @assign_arith_expr
+                | @assign_bitwise_expr
+                | @assign_pointer_expr
+                ;
+
+@assign_expr = @assignexpr | @assign_op_expr | @blockassignexpr
+
+/*
+  Binary encoding of the allocator form.
+
+  case @allocator.form of
+    0 = plain
+  | 1 = alignment
+  ;
+*/
+
+/**
+ * The allocator function associated with a `new` or `new[]` expression.
+ * The `form` column specified whether the allocation call contains an alignment
+ * argument.
+ */
+expr_allocator(
+    unique int expr: @any_new_expr ref,
+    int func: @function ref,
+    int form: int ref
+);
+
+/*
+  Binary encoding of the deallocator form.
+
+  case @deallocator.form of
+    0 = plain
+  | 1 = size
+  | 2 = alignment
+  | 4 = destroying_delete
+  ;
+*/
+
+/**
+ * The deallocator function associated with a `delete`, `delete[]`, `new`, or
+ * `new[]` expression. For a `new` or `new[]` expression, the deallocator is the
+ * one used to free memory if the initialization throws an exception.
+ * The `form` column specifies whether the deallocation call contains a size
+ * argument, and alignment argument, or both.
+ */
+expr_deallocator(
+    unique int expr: @new_or_delete_expr ref,
+    int func: @function ref,
+    int form: int ref
+);
+
+/**
+ * Holds if the `@conditionalexpr` is of the two operand form
+ * `guard ? : false`.
+ */
+expr_cond_two_operand(
+    unique int cond: @conditionalexpr ref
+);
+
+/**
+ * The guard of `@conditionalexpr` `guard ? true : false`
+ */
+expr_cond_guard(
+    unique int cond: @conditionalexpr ref,
+    int guard: @expr ref
+);
+
+/**
+ * The expression used when the guard of `@conditionalexpr`
+ * `guard ? true : false` holds. For the two operand form
+ * `guard ?: false` consider using `expr_cond_guard` instead.
+ */
+expr_cond_true(
+    unique int cond: @conditionalexpr ref,
+    int true: @expr ref
+);
+
+/**
+ * The expression used when the guard of `@conditionalexpr`
+ * `guard ? true : false` does not hold.
+ */
+expr_cond_false(
+    unique int cond: @conditionalexpr ref,
+    int false: @expr ref
+);
+
+/** A string representation of the value. */
+values(
+    unique int id: @value,
+    string str: string ref
+);
+
+/** The actual text in the source code for the value, if any. */
+valuetext(
+    unique int id: @value ref,
+    string text: string ref
+);
+
+valuebind(
+    int val: @value ref,
+    unique int expr: @expr ref
+);
+
+fieldoffsets(
+    unique int id: @variable ref,
+    int byteoffset: int ref,
+    int bitoffset: int ref
+);
+
+bitfield(
+    unique int id: @variable ref,
+    int bits: int ref,
+    int declared_bits: int ref
+);
+
+/* TODO
+memberprefix(
+    int member: @expr ref,
+    int prefix: @expr ref
+);
+*/
+
+/*
+   kind(1) = mbrcallexpr
+   kind(2) = mbrptrcallexpr
+   kind(3) = mbrptrmbrcallexpr
+   kind(4) = ptrmbrptrmbrcallexpr
+   kind(5) = mbrreadexpr // x.y
+   kind(6) = mbrptrreadexpr // p->y
+   kind(7) = mbrptrmbrreadexpr // x.*pm
+   kind(8) = mbrptrmbrptrreadexpr // x->*pm
+   kind(9) = staticmbrreadexpr // static x.y
+   kind(10) = staticmbrptrreadexpr // static p->y
+*/
+/* TODO
+memberaccess(
+    int member: @expr ref,
+    int kind: int ref
+);
+*/
+
+initialisers(
+    unique int init: @initialiser,
+    int var: @accessible ref,
+    unique int expr: @expr ref,
+    int location: @location_default ref
+);
+
+braced_initialisers(
+    int init: @initialiser ref
+);
+
+/**
+ * An ancestor for the expression, for cases in which we cannot
+ * otherwise find the expression's parent.
+ */
+expr_ancestor(
+    int exp: @expr ref,
+    int ancestor: @element ref
+);
+
+exprs(
+    unique int id: @expr,
+    int kind: int ref,
+    int location: @location_default ref
+);
+
+expr_reuse(
+    int reuse: @expr ref,
+    int original: @expr ref,
+    int value_category: int ref
+)
+
+/*
+  case @value.category of
+    1 = prval
+  | 2 = xval
+  | 3 = lval
+  ;
+*/
+expr_types(
+    int id: @expr ref,
+    int typeid: @type ref,
+    int value_category: int ref
+);
+
+case @expr.kind of
+    1 = @errorexpr
+|   2 = @address_of // & AddressOfExpr
+|   3 = @reference_to // ReferenceToExpr (implicit?)
+|   4 = @indirect // * PointerDereferenceExpr
+|   5 = @ref_indirect // ReferenceDereferenceExpr (implicit?)
+// ...
+|   8 = @array_to_pointer // (???)
+|   9 = @vacuous_destructor_call // VacuousDestructorCall
+// ...
+|  11 = @assume // Microsoft
+|  12 = @parexpr
+|  13 = @arithnegexpr
+|  14 = @unaryplusexpr
+|  15 = @complementexpr
+|  16 = @notexpr
+|  17 = @conjugation // GNU ~ operator
+|  18 = @realpartexpr // GNU __real
+|  19 = @imagpartexpr // GNU __imag
+|  20 = @postincrexpr
+|  21 = @postdecrexpr
+|  22 = @preincrexpr
+|  23 = @predecrexpr
+|  24 = @conditionalexpr
+|  25 = @addexpr
+|  26 = @subexpr
+|  27 = @mulexpr
+|  28 = @divexpr
+|  29 = @remexpr
+|  30 = @jmulexpr // C99 mul imaginary
+|  31 = @jdivexpr // C99 div imaginary
+|  32 = @fjaddexpr // C99 add real + imaginary
+|  33 = @jfaddexpr // C99 add imaginary + real
+|  34 = @fjsubexpr // C99 sub real - imaginary
+|  35 = @jfsubexpr // C99 sub imaginary - real
+|  36 = @paddexpr // pointer add (pointer + int or int + pointer)
+|  37 = @psubexpr // pointer sub (pointer - integer)
+|  38 = @pdiffexpr // difference between two pointers
+|  39 = @lshiftexpr
+|  40 = @rshiftexpr
+|  41 = @andexpr
+|  42 = @orexpr
+|  43 = @xorexpr
+|  44 = @eqexpr
+|  45 = @neexpr
+|  46 = @gtexpr
+|  47 = @ltexpr
+|  48 = @geexpr
+|  49 = @leexpr
+|  50 = @minexpr // GNU minimum
+|  51 = @maxexpr // GNU maximum
+|  52 = @assignexpr
+|  53 = @assignaddexpr
+|  54 = @assignsubexpr
+|  55 = @assignmulexpr
+|  56 = @assigndivexpr
+|  57 = @assignremexpr
+|  58 = @assignlshiftexpr
+|  59 = @assignrshiftexpr
+|  60 = @assignandexpr
+|  61 = @assignorexpr
+|  62 = @assignxorexpr
+|  63 = @assignpaddexpr // assign pointer add
+|  64 = @assignpsubexpr // assign pointer sub
+|  65 = @andlogicalexpr
+|  66 = @orlogicalexpr
+|  67 = @commaexpr
+|  68 = @subscriptexpr // access to member of an array, e.g., a[5]
+// ...  69 @objc_subscriptexpr deprecated
+// ...  70 @cmdaccess deprecated
+// ...
+|  73 = @virtfunptrexpr
+|  74 = @callexpr
+// ...  75 @msgexpr_normal deprecated
+// ...  76 @msgexpr_super deprecated
+// ...  77 @atselectorexpr deprecated
+// ...  78 @atprotocolexpr deprecated
+|  79 = @vastartexpr
+|  80 = @vaargexpr
+|  81 = @vaendexpr
+|  82 = @vacopyexpr
+// ...  83 @atencodeexpr deprecated
+|  84 = @varaccess
+|  85 = @thisaccess
+// ...  86 @objc_box_expr deprecated
+|  87 = @new_expr
+|  88 = @delete_expr
+|  89 = @throw_expr
+|  90 = @condition_decl // a variable declared in a condition, e.g., if(int x = y > 2)
+|  91 = @braced_init_list
+|  92 = @type_id
+|  93 = @runtime_sizeof
+|  94 = @runtime_alignof
+|  95 = @sizeof_pack
+|  96 = @expr_stmt // GNU extension
+|  97 = @routineexpr
+|  98 = @type_operand // used to access a type in certain contexts (haven't found any examples yet....)
+|  99 = @offsetofexpr // offsetof ::= type and field
+| 100 = @hasassignexpr // __has_assign ::= type
+| 101 = @hascopyexpr // __has_copy ::= type
+| 102 = @hasnothrowassign // __has_nothrow_assign ::= type
+| 103 = @hasnothrowconstr // __has_nothrow_constructor ::= type
+| 104 = @hasnothrowcopy // __has_nothrow_copy ::= type
+| 105 = @hastrivialassign // __has_trivial_assign ::= type
+| 106 = @hastrivialconstr // __has_trivial_constructor ::= type
+| 107 = @hastrivialcopy // __has_trivial_copy ::= type
+| 108 = @hasuserdestr // __has_user_destructor ::= type
+| 109 = @hasvirtualdestr // __has_virtual_destructor ::= type
+| 110 = @isabstractexpr // __is_abstract ::= type
+| 111 = @isbaseofexpr // __is_base_of ::= type type
+| 112 = @isclassexpr // __is_class ::= type
+| 113 = @isconvtoexpr // __is_convertible_to ::= type type
+| 114 = @isemptyexpr // __is_empty ::= type
+| 115 = @isenumexpr // __is_enum ::= type
+| 116 = @ispodexpr // __is_pod ::= type
+| 117 = @ispolyexpr // __is_polymorphic ::= type
+| 118 = @isunionexpr // __is_union ::= type
+| 119 = @typescompexpr // GNU __builtin_types_compatible ::= type type
+| 120 = @intaddrexpr // frontend internal builtin, used to implement offsetof
+// ...
+| 122 = @hastrivialdestructor // __has_trivial_destructor ::= type
+| 123 = @literal
+| 124 = @uuidof
+| 127 = @aggregateliteral
+| 128 = @delete_array_expr
+| 129 = @new_array_expr
+// ... 130 @objc_array_literal deprecated
+// ... 131 @objc_dictionary_literal deprecated
+| 132 = @foldexpr
+// ...
+| 200 = @ctordirectinit
+| 201 = @ctorvirtualinit
+| 202 = @ctorfieldinit
+| 203 = @ctordelegatinginit
+| 204 = @dtordirectdestruct
+| 205 = @dtorvirtualdestruct
+| 206 = @dtorfielddestruct
+// ...
+| 210 = @static_cast
+| 211 = @reinterpret_cast
+| 212 = @const_cast
+| 213 = @dynamic_cast
+| 214 = @c_style_cast
+| 215 = @lambdaexpr
+| 216 = @param_ref
+| 217 = @noopexpr
+// ...
+| 294 = @istriviallyconstructibleexpr
+| 295 = @isdestructibleexpr
+| 296 = @isnothrowdestructibleexpr
+| 297 = @istriviallydestructibleexpr
+| 298 = @istriviallyassignableexpr
+| 299 = @isnothrowassignableexpr
+| 300 = @istrivialexpr
+| 301 = @isstandardlayoutexpr
+| 302 = @istriviallycopyableexpr
+| 303 = @isliteraltypeexpr
+| 304 = @hastrivialmoveconstructorexpr
+| 305 = @hastrivialmoveassignexpr
+| 306 = @hasnothrowmoveassignexpr
+| 307 = @isconstructibleexpr
+| 308 = @isnothrowconstructibleexpr
+| 309 = @hasfinalizerexpr
+| 310 = @isdelegateexpr
+| 311 = @isinterfaceclassexpr
+| 312 = @isrefarrayexpr
+| 313 = @isrefclassexpr
+| 314 = @issealedexpr
+| 315 = @issimplevalueclassexpr
+| 316 = @isvalueclassexpr
+| 317 = @isfinalexpr
+| 319 = @noexceptexpr
+| 320 = @builtinshufflevector
+| 321 = @builtinchooseexpr
+| 322 = @builtinaddressof
+| 323 = @vec_fill
+| 324 = @builtinconvertvector
+| 325 = @builtincomplex
+| 326 = @spaceshipexpr
+| 327 = @co_await
+| 328 = @co_yield
+| 329 = @temp_init
+| 330 = @isassignable
+| 331 = @isaggregate
+| 332 = @hasuniqueobjectrepresentations
+| 333 = @builtinbitcast
+| 334 = @builtinshuffle
+| 335 = @blockassignexpr
+| 336 = @issame
+| 337 = @isfunction
+| 338 = @islayoutcompatible
+| 339 = @ispointerinterconvertiblebaseof
+| 340 = @isarray
+| 341 = @arrayrank
+| 342 = @arrayextent
+| 343 = @isarithmetic
+| 344 = @iscompletetype
+| 345 = @iscompound
+| 346 = @isconst
+| 347 = @isfloatingpoint
+| 348 = @isfundamental
+| 349 = @isintegral
+| 350 = @islvaluereference
+| 351 = @ismemberfunctionpointer
+| 352 = @ismemberobjectpointer
+| 353 = @ismemberpointer
+| 354 = @isobject
+| 355 = @ispointer
+| 356 = @isreference
+| 357 = @isrvaluereference
+| 358 = @isscalar
+| 359 = @issigned
+| 360 = @isunsigned
+| 361 = @isvoid
+| 362 = @isvolatile
+| 363 = @reuseexpr
+| 364 = @istriviallycopyassignable
+| 365 = @isassignablenopreconditioncheck
+| 366 = @referencebindstotemporary
+| 367 = @issameas
+| 368 = @builtinhasattribute
+| 369 = @ispointerinterconvertiblewithclass
+| 370 = @builtinispointerinterconvertiblewithclass
+| 371 = @iscorrespondingmember
+| 372 = @builtiniscorrespondingmember
+| 373 = @isboundedarray
+| 374 = @isunboundedarray
+| 375 = @isreferenceable
+| 378 = @isnothrowconvertible
+| 379 = @referenceconstructsfromtemporary
+| 380 = @referenceconvertsfromtemporary
+| 381 = @isconvertible
+| 382 = @isvalidwinrttype
+| 383 = @iswinclass
+| 384 = @iswininterface
+| 385 = @istriviallyequalitycomparable
+| 386 = @isscopedenum
+| 387 = @istriviallyrelocatable
+| 388 = @datasizeof
+| 389 = @c11_generic
+| 390 = @requires_expr
+| 391 = @nested_requirement
+| 392 = @compound_requirement
+| 393 = @concept_id
+;
+
+@var_args_expr = @vastartexpr
+               | @vaendexpr
+               | @vaargexpr
+               | @vacopyexpr
+               ;
+
+@builtin_op = @var_args_expr
+            | @noopexpr
+            | @offsetofexpr
+            | @intaddrexpr
+            | @hasassignexpr
+            | @hascopyexpr
+            | @hasnothrowassign
+            | @hasnothrowconstr
+            | @hasnothrowcopy
+            | @hastrivialassign
+            | @hastrivialconstr
+            | @hastrivialcopy
+            | @hastrivialdestructor
+            | @hasuserdestr
+            | @hasvirtualdestr
+            | @isabstractexpr
+            | @isbaseofexpr
+            | @isclassexpr
+            | @isconvtoexpr
+            | @isemptyexpr
+            | @isenumexpr
+            | @ispodexpr
+            | @ispolyexpr
+            | @isunionexpr
+            | @typescompexpr
+            | @builtinshufflevector
+            | @builtinconvertvector
+            | @builtinaddressof
+            | @istriviallyconstructibleexpr
+            | @isdestructibleexpr
+            | @isnothrowdestructibleexpr
+            | @istriviallydestructibleexpr
+            | @istriviallyassignableexpr
+            | @isnothrowassignableexpr
+            | @istrivialexpr
+            | @isstandardlayoutexpr
+            | @istriviallycopyableexpr
+            | @isliteraltypeexpr
+            | @hastrivialmoveconstructorexpr
+            | @hastrivialmoveassignexpr
+            | @hasnothrowmoveassignexpr
+            | @isconstructibleexpr
+            | @isnothrowconstructibleexpr
+            | @hasfinalizerexpr
+            | @isdelegateexpr
+            | @isinterfaceclassexpr
+            | @isrefarrayexpr
+            | @isrefclassexpr
+            | @issealedexpr
+            | @issimplevalueclassexpr
+            | @isvalueclassexpr
+            | @isfinalexpr
+            | @builtinchooseexpr
+            | @builtincomplex
+            | @isassignable
+            | @isaggregate
+            | @hasuniqueobjectrepresentations
+            | @builtinbitcast
+            | @builtinshuffle
+            | @issame
+            | @isfunction
+            | @islayoutcompatible
+            | @ispointerinterconvertiblebaseof
+            | @isarray
+            | @arrayrank
+            | @arrayextent
+            | @isarithmetic
+            | @iscompletetype
+            | @iscompound
+            | @isconst
+            | @isfloatingpoint
+            | @isfundamental
+            | @isintegral
+            | @islvaluereference
+            | @ismemberfunctionpointer
+            | @ismemberobjectpointer
+            | @ismemberpointer
+            | @isobject
+            | @ispointer
+            | @isreference
+            | @isrvaluereference
+            | @isscalar
+            | @issigned
+            | @isunsigned
+            | @isvoid
+            | @isvolatile
+            | @istriviallycopyassignable
+            | @isassignablenopreconditioncheck
+            | @referencebindstotemporary
+            | @issameas
+            | @builtinhasattribute
+            | @ispointerinterconvertiblewithclass
+            | @builtinispointerinterconvertiblewithclass
+            | @iscorrespondingmember
+            | @builtiniscorrespondingmember
+            | @isboundedarray
+            | @isunboundedarray
+            | @isreferenceable
+            | @isnothrowconvertible
+            | @referenceconstructsfromtemporary
+            | @referenceconvertsfromtemporary
+            | @isconvertible
+            | @isvalidwinrttype
+            | @iswinclass
+            | @iswininterface
+            | @istriviallyequalitycomparable
+            | @isscopedenum
+            | @istriviallyrelocatable
+            ;
+
+compound_requirement_is_noexcept(
+    int expr: @compound_requirement ref
+);
+
+new_allocated_type(
+    unique int expr: @new_expr ref,
+    int type_id: @type ref
+);
+
+new_array_allocated_type(
+    unique int expr: @new_array_expr ref,
+    int type_id: @type ref
+);
+
+/**
+ * The field being initialized by an initializer expression within an aggregate
+ * initializer for a class/struct/union. Position is used to sort repeated initializers.
+ */
+#keyset[aggregate, position]
+aggregate_field_init(
+    int aggregate: @aggregateliteral ref,
+    int initializer: @expr ref,
+    int field: @membervariable ref,
+    int position: int ref,
+    boolean is_designated: boolean ref
+);
+
+/**
+ * The index of the element being initialized by an initializer expression
+ * within an aggregate initializer for an array. Position is used to sort repeated initializers.
+ */
+#keyset[aggregate, position]
+aggregate_array_init(
+    int aggregate: @aggregateliteral ref,
+    int initializer: @expr ref,
+    int element_index: int ref,
+    int position: int ref,
+    boolean is_designated: boolean ref
+);
+
+@ctorinit = @ctordirectinit
+          | @ctorvirtualinit
+          | @ctorfieldinit
+          | @ctordelegatinginit;
+@dtordestruct = @dtordirectdestruct
+              | @dtorvirtualdestruct
+              | @dtorfielddestruct;
+
+
+condition_decl_bind(
+    unique int expr: @condition_decl ref,
+    unique int decl: @declaration ref
+);
+
+typeid_bind(
+    unique int expr: @type_id ref,
+    int type_id: @type ref
+);
+
+uuidof_bind(
+    unique int expr: @uuidof ref,
+    int type_id: @type ref
+);
+
+@sizeof_or_alignof = @runtime_sizeof | @runtime_alignof | @datasizeof | @sizeof_pack;
+
+sizeof_bind(
+    unique int expr: @sizeof_or_alignof ref,
+    int type_id: @type ref
+);
+
+code_block(
+    unique int block: @literal ref,
+    unique int routine: @function ref
+);
+
+lambdas(
+    unique int expr: @lambdaexpr ref,
+    string default_capture: string ref,
+    boolean has_explicit_return_type: boolean ref,
+    boolean has_explicit_parameter_list: boolean ref
+);
+
+lambda_capture(
+    unique int id: @lambdacapture,
+    int lambda: @lambdaexpr ref,
+    int index: int ref,
+    int field: @membervariable ref,
+    boolean captured_by_reference: boolean ref,
+    boolean is_implicit: boolean ref,
+    int location: @location_default ref
+);
+
+@funbindexpr = @routineexpr
+             | @new_expr
+             | @delete_expr
+             | @delete_array_expr
+             | @ctordirectinit
+             | @ctorvirtualinit
+             | @ctordelegatinginit
+             | @dtordirectdestruct
+             | @dtorvirtualdestruct;
+
+@varbindexpr = @varaccess | @ctorfieldinit | @dtorfielddestruct;
+@addressable = @function | @variable ;
+@accessible = @addressable | @enumconstant ;
+
+@access = @varaccess | @routineexpr ;
+
+fold(
+    int expr: @foldexpr ref,
+    string operator: string ref,
+    boolean is_left_fold: boolean ref
+);
+
+stmts(
+    unique int id: @stmt,
+    int kind: int ref,
+    int location: @location_default ref
+);
+
+case @stmt.kind of
+    1 = @stmt_expr
+|   2 = @stmt_if
+|   3 = @stmt_while
+|   4 = @stmt_goto
+|   5 = @stmt_label
+|   6 = @stmt_return
+|   7 = @stmt_block
+|   8 = @stmt_end_test_while // do { ... } while ( ... )
+|   9 = @stmt_for
+|  10 = @stmt_switch_case
+|  11 = @stmt_switch
+|  13 = @stmt_asm // "asm" statement or the body of an asm function
+|  15 = @stmt_try_block
+|  16 = @stmt_microsoft_try // Microsoft
+|  17 = @stmt_decl
+|  18 = @stmt_set_vla_size // C99
+|  19 = @stmt_vla_decl // C99
+|  25 = @stmt_assigned_goto // GNU
+|  26 = @stmt_empty
+|  27 = @stmt_continue
+|  28 = @stmt_break
+|  29 = @stmt_range_based_for // C++11
+// ...  30 @stmt_at_autoreleasepool_block deprecated
+// ...  31 @stmt_objc_for_in deprecated
+// ...  32 @stmt_at_synchronized deprecated
+|  33 = @stmt_handler
+// ...  34 @stmt_finally_end deprecated
+|  35 = @stmt_constexpr_if
+|  37 = @stmt_co_return
+|  38 = @stmt_consteval_if
+|  39 = @stmt_not_consteval_if
+|  40 = @stmt_leave
+;
+
+type_vla(
+    int type_id: @type ref,
+    int decl: @stmt_vla_decl ref
+);
+
+variable_vla(
+    int var: @variable ref,
+    int decl: @stmt_vla_decl ref
+);
+
+type_is_vla(unique int type_id: @derivedtype ref)
+
+if_initialization(
+    unique int if_stmt: @stmt_if ref,
+    int init_id: @stmt ref
+);
+
+if_then(
+    unique int if_stmt: @stmt_if ref,
+    int then_id: @stmt ref
+);
+
+if_else(
+    unique int if_stmt: @stmt_if ref,
+    int else_id: @stmt ref
+);
+
+constexpr_if_initialization(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int init_id: @stmt ref
+);
+
+constexpr_if_then(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int then_id: @stmt ref
+);
+
+constexpr_if_else(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int else_id: @stmt ref
+);
+
+@stmt_consteval_or_not_consteval_if = @stmt_consteval_if | @stmt_not_consteval_if;
+
+consteval_if_then(
+    unique int constexpr_if_stmt: @stmt_consteval_or_not_consteval_if ref,
+    int then_id: @stmt ref
+);
+
+consteval_if_else(
+    unique int constexpr_if_stmt: @stmt_consteval_or_not_consteval_if ref,
+    int else_id: @stmt ref
+);
+
+while_body(
+    unique int while_stmt: @stmt_while ref,
+    int body_id: @stmt ref
+);
+
+do_body(
+    unique int do_stmt: @stmt_end_test_while ref,
+    int body_id: @stmt ref
+);
+
+switch_initialization(
+    unique int switch_stmt: @stmt_switch ref,
+    int init_id: @stmt ref
+);
+
+#keyset[switch_stmt, index]
+switch_case(
+    int switch_stmt: @stmt_switch ref,
+    int index: int ref,
+    int case_id: @stmt_switch_case ref
+);
+
+switch_body(
+    unique int switch_stmt: @stmt_switch ref,
+    int body_id: @stmt ref
+);
+
+@stmt_for_or_range_based_for = @stmt_for
+                             | @stmt_range_based_for;
+
+for_initialization(
+    unique int for_stmt: @stmt_for_or_range_based_for ref,
+    int init_id: @stmt ref
+);
+
+for_condition(
+    unique int for_stmt: @stmt_for ref,
+    int condition_id: @expr ref
+);
+
+for_update(
+    unique int for_stmt: @stmt_for ref,
+    int update_id: @expr ref
+);
+
+for_body(
+    unique int for_stmt: @stmt_for ref,
+    int body_id: @stmt ref
+);
+
+@stmtparent = @stmt | @expr_stmt ;
+stmtparents(
+    unique int id: @stmt ref,
+    int index: int ref,
+    int parent: @stmtparent ref
+);
+
+ishandler(unique int block: @stmt_block ref);
+
+@cfgnode = @stmt | @expr | @function | @initialiser ;
+
+stmt_decl_bind(
+    int stmt: @stmt_decl ref,
+    int num: int ref,
+    int decl: @declaration ref
+);
+
+stmt_decl_entry_bind(
+    int stmt: @stmt_decl ref,
+    int num: int ref,
+    int decl_entry: @element ref
+);
+
+@parameterized_element = @function | @stmt_block | @requires_expr;
+
+blockscope(
+    unique int block: @stmt_block ref,
+    int enclosing: @parameterized_element ref
+);
+
+@jump = @stmt_goto | @stmt_break | @stmt_continue | @stmt_leave;
+
+@jumporlabel = @jump | @stmt_label | @literal;
+
+jumpinfo(
+    unique int id: @jumporlabel ref,
+    string str: string ref,
+    int target: @stmt ref
+);
+
+preprocdirects(
+    unique int id: @preprocdirect,
+    int kind: int ref,
+    int location: @location_default ref
+);
+case @preprocdirect.kind of
+   0 = @ppd_if
+|  1 = @ppd_ifdef
+|  2 = @ppd_ifndef
+|  3 = @ppd_elif
+|  4 = @ppd_else
+|  5 = @ppd_endif
+|  6 = @ppd_plain_include
+|  7 = @ppd_define
+|  8 = @ppd_undef
+|  9 = @ppd_line
+| 10 = @ppd_error
+| 11 = @ppd_pragma
+| 12 = @ppd_objc_import
+| 13 = @ppd_include_next
+| 14 = @ppd_ms_import
+| 15 = @ppd_elifdef
+| 16 = @ppd_elifndef
+| 18 = @ppd_warning
+;
+
+@ppd_include = @ppd_plain_include | @ppd_objc_import | @ppd_include_next | @ppd_ms_import;
+
+@ppd_branch = @ppd_if | @ppd_ifdef | @ppd_ifndef | @ppd_elif | @ppd_elifdef | @ppd_elifndef;
+
+preprocpair(
+    int begin : @ppd_branch ref,
+    int elseelifend : @preprocdirect ref
+);
+
+preproctrue(int branch : @ppd_branch ref);
+preprocfalse(int branch : @ppd_branch ref);
+
+preproctext(
+    unique int id: @preprocdirect ref,
+    string head: string ref,
+    string body: string ref
+);
+
+includes(
+    unique int id: @ppd_include ref,
+    int included: @file ref
+);
+
+link_targets(
+    int id: @link_target,
+    int binary: @file ref
+);
+
+link_parent(
+    int element : @element ref,
+    int link_target : @link_target ref
+);
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
diff --git a/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/upgrade.properties b/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/cpp/downgrades/b8173c6954a312e2f3530757c035b33784cafd19/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/cpp/ql/lib/semmlecode.cpp.dbscheme b/cpp/ql/lib/semmlecode.cpp.dbscheme
index d2d611b3fdcc..b8173c6954a3 100644
--- a/cpp/ql/lib/semmlecode.cpp.dbscheme
+++ b/cpp/ql/lib/semmlecode.cpp.dbscheme
@@ -2379,6 +2379,8 @@ link_parent(
     int link_target : @link_target ref
 );
 
+/*- Database metadata -*/
+
 /**
  * The CLI will automatically emit applicable tuples for this table,
  * such as `databaseMetadata("isOverlay", "true")` when building an
@@ -2389,6 +2391,8 @@ databaseMetadata(
   string value: string ref
 );
 
+/*- Overlay support -*/
+
 /**
  * The CLI will automatically emit tuples for each new/modified/deleted file
  * when building an overlay database.
diff --git a/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/old.dbscheme b/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/old.dbscheme
new file mode 100644
index 000000000000..d2d611b3fdcc
--- /dev/null
+++ b/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/old.dbscheme
@@ -0,0 +1,2469 @@
+
+/*- Compilations -*/
+
+/**
+ * An invocation of the compiler. Note that more than one file may be
+ * compiled per invocation. For example, this command compiles three
+ * source files:
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * The `id` simply identifies the invocation, while `cwd` is the working
+ * directory from which the compiler was invoked.
+ */
+compilations(
+    /**
+     * An invocation of the compiler. Note that more than one file may
+     * be compiled per invocation. For example, this command compiles
+     * three source files:
+     *
+     *   gcc -c f1.c f2.c f3.c
+     */
+    unique int id : @compilation,
+    string cwd : string ref
+);
+
+/**
+ * The arguments that were passed to the extractor for a compiler
+ * invocation. If `id` is for the compiler invocation
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * then typically there will be rows for
+ *
+ * num | arg
+ * --- | ---
+ * 0   | *path to extractor*
+ * 1   | `--mimic`
+ * 2   | `/usr/bin/gcc`
+ * 3   | `-c`
+ * 4   | f1.c
+ * 5   | f2.c
+ * 6   | f3.c
+ */
+#keyset[id, num]
+compilation_args(
+    int id : @compilation ref,
+    int num : int ref,
+    string arg : string ref
+);
+
+/**
+ * The expanded arguments that were passed to the extractor for a
+ * compiler invocation. This is similar to `compilation_args`, but
+ * for a `@someFile` argument, it includes the arguments from that
+ * file, rather than just taking the argument literally.
+ */
+#keyset[id, num]
+compilation_expanded_args(
+    int id : @compilation ref,
+    int num : int ref,
+    string arg : string ref
+);
+
+/**
+ * Optionally, record the build mode for each compilation.
+ */
+compilation_build_mode(
+    unique int id : @compilation ref,
+    int mode : int ref
+);
+
+/*
+case @compilation_build_mode.mode of
+  0 = @build_mode_none
+| 1 = @build_mode_manual
+| 2 = @build_mode_auto
+;
+*/
+
+/**
+ * The source files that are compiled by a compiler invocation.
+ * If `id` is for the compiler invocation
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * then there will be rows for
+ *
+ * num | arg
+ * --- | ---
+ * 0   | f1.c
+ * 1   | f2.c
+ * 2   | f3.c
+ *
+ * Note that even if those files `#include` headers, those headers
+ * do not appear as rows.
+ */
+#keyset[id, num]
+compilation_compiling_files(
+    int id : @compilation ref,
+    int num : int ref,
+    int file : @file ref
+);
+
+/**
+ * The time taken by the extractor for a compiler invocation.
+ *
+ * For each file `num`, there will be rows for
+ *
+ * kind | seconds
+ * ---- | ---
+ * 1    | CPU seconds used by the extractor frontend
+ * 2    | Elapsed seconds during the extractor frontend
+ * 3    | CPU seconds used by the extractor backend
+ * 4    | Elapsed seconds during the extractor backend
+ */
+#keyset[id, num, kind]
+compilation_time(
+    int id : @compilation ref,
+    int num : int ref,
+    /* kind:
+       1 = frontend_cpu_seconds
+       2 = frontend_elapsed_seconds
+       3 = extractor_cpu_seconds
+       4 = extractor_elapsed_seconds
+    */
+    int kind : int ref,
+    float seconds : float ref
+);
+
+/**
+ * An error or warning generated by the extractor.
+ * The diagnostic message `diagnostic` was generated during compiler
+ * invocation `compilation`, and is the `file_number_diagnostic_number`th
+ * message generated while extracting the `file_number`th file of that
+ * invocation.
+ */
+#keyset[compilation, file_number, file_number_diagnostic_number]
+diagnostic_for(
+    int diagnostic : @diagnostic ref,
+    int compilation : @compilation ref,
+    int file_number : int ref,
+    int file_number_diagnostic_number : int ref
+);
+
+/**
+ * If extraction was successful, then `cpu_seconds` and
+ * `elapsed_seconds` are the CPU time and elapsed time (respectively)
+ * that extraction took for compiler invocation `id`.
+ */
+compilation_finished(
+    unique int id : @compilation ref,
+    float cpu_seconds : float ref,
+    float elapsed_seconds : float ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- C++ dbscheme -*/
+
+extractor_version(
+    string codeql_version: string ref,
+    string frontend_version: string ref
+)
+
+pch_uses(
+    int pch: @pch ref,
+    int compilation: @compilation ref,
+    int id: @file ref
+)
+
+#keyset[pch, compilation]
+pch_creations(
+    int pch: @pch,
+    int compilation: @compilation ref,
+    int from: @file ref
+)
+
+/** An element for which line-count information is available. */
+@sourceline = @file | @function | @variable | @enumconstant | @xmllocatable;
+
+fileannotations(
+    int id: @file ref,
+    int kind: int ref,
+    string name: string ref,
+    string value: string ref
+);
+
+inmacroexpansion(
+    int id: @element ref,
+    int inv: @macroinvocation ref
+);
+
+affectedbymacroexpansion(
+    int id: @element ref,
+    int inv: @macroinvocation ref
+);
+
+case @macroinvocation.kind of
+  1 = @macro_expansion
+| 2 = @other_macro_reference
+;
+
+macroinvocations(
+    unique int id: @macroinvocation,
+    int macro_id: @ppd_define ref,
+    int location: @location_default ref,
+    int kind: int ref
+);
+
+macroparent(
+    unique int id: @macroinvocation ref,
+    int parent_id: @macroinvocation ref
+);
+
+// a macroinvocation may be part of another location
+// the way to find a constant expression that uses a macro
+// is thus to find a constant expression that has a location
+// to which a macro invocation is bound
+macrolocationbind(
+    int id: @macroinvocation ref,
+    int location: @location_default ref
+);
+
+#keyset[invocation, argument_index]
+macro_argument_unexpanded(
+    int invocation: @macroinvocation ref,
+    int argument_index: int ref,
+    string text: string ref
+);
+
+#keyset[invocation, argument_index]
+macro_argument_expanded(
+    int invocation: @macroinvocation ref,
+    int argument_index: int ref,
+    string text: string ref
+);
+
+case @function.kind of
+  0 = @unknown_function
+| 1 = @normal_function
+| 2 = @constructor
+| 3 = @destructor
+| 4 = @conversion_function
+| 5 = @operator
+// ... 6 = @builtin_function deprecated    // GCC built-in functions, e.g. __builtin___memcpy_chk
+| 7 = @user_defined_literal
+| 8 = @deduction_guide
+;
+
+functions(
+    unique int id: @function,
+    string name: string ref,
+    int kind: int ref
+);
+
+builtin_functions(
+    int id: @function ref
+)
+
+function_entry_point(
+    int id: @function ref,
+    unique int entry_point: @stmt ref
+);
+
+function_return_type(
+    int id: @function ref,
+    int return_type: @type ref
+);
+
+/**
+ * If `function` is a coroutine, then this gives the `std::experimental::resumable_traits`
+ * instance associated with it, and the variables representing the `handle` and `promise`
+ * for it.
+ */
+coroutine(
+  unique int function: @function ref,
+  int traits: @type ref
+);
+
+/*
+case @coroutine_placeholder_variable.kind of
+  1 = @handle
+| 2 = @promise
+| 3 = @init_await_resume
+;
+*/
+
+coroutine_placeholder_variable(
+  unique int placeholder_variable: @variable ref,
+  int kind: int ref,
+  int function: @function ref
+)
+
+/** The `new` function used for allocating the coroutine state, if any. */
+coroutine_new(
+  unique int function: @function ref,
+  int new: @function ref
+);
+
+/** The `delete` function used for deallocating the coroutine state, if any. */
+coroutine_delete(
+  unique int function: @function ref,
+  int delete: @function ref
+);
+
+purefunctions(unique int id: @function ref);
+
+function_deleted(unique int id: @function ref);
+
+function_defaulted(unique int id: @function ref);
+
+function_prototyped(unique int id: @function ref)
+
+deduction_guide_for_class(
+    int id: @function ref,
+    int class_template: @usertype ref
+)
+
+member_function_this_type(
+    unique int id: @function ref,
+    int this_type: @type ref
+);
+
+#keyset[id, type_id]
+fun_decls(
+    int id: @fun_decl,
+    int function: @function ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+fun_def(unique int id: @fun_decl ref);
+fun_specialized(unique int id: @fun_decl ref);
+fun_implicit(unique int id: @fun_decl ref);
+fun_decl_specifiers(
+    int id: @fun_decl ref,
+    string name: string ref
+)
+#keyset[fun_decl, index]
+fun_decl_throws(
+    int fun_decl: @fun_decl ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+/* an empty throw specification is different from none */
+fun_decl_empty_throws(unique int fun_decl: @fun_decl ref);
+fun_decl_noexcept(
+    int fun_decl: @fun_decl ref,
+    int constant: @expr ref
+);
+fun_decl_empty_noexcept(int fun_decl: @fun_decl ref);
+fun_decl_typedef_type(
+    unique int fun_decl: @fun_decl ref,
+    int typedeftype_id: @usertype ref
+);
+
+/*
+case @fun_requires.kind of
+  1 = @template_attached
+| 2 = @function_attached
+;
+*/
+
+fun_requires(
+    int id: @fun_decl ref,
+    int kind: int ref,
+    int constraint: @expr ref
+);
+
+param_decl_bind(
+    unique int id: @var_decl ref,
+    int index: int ref,
+    int fun_decl: @fun_decl ref
+);
+
+#keyset[id, type_id]
+var_decls(
+    int id: @var_decl,
+    int variable: @variable ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+var_def(unique int id: @var_decl ref);
+var_specialized(int id: @var_decl ref);
+var_decl_specifiers(
+    int id: @var_decl ref,
+    string name: string ref
+)
+is_structured_binding(unique int id: @variable ref);
+var_requires(
+    int id: @var_decl ref,
+    int constraint: @expr ref
+);
+
+type_decls(
+    unique int id: @type_decl,
+    int type_id: @type ref,
+    int location: @location_default ref
+);
+type_def(unique int id: @type_decl ref);
+type_decl_top(
+    unique int type_decl: @type_decl ref
+);
+type_requires(
+    int id: @type_decl ref,
+    int constraint: @expr ref
+);
+
+namespace_decls(
+    unique int id: @namespace_decl,
+    int namespace_id: @namespace ref,
+    int location: @location_default ref,
+    int bodylocation: @location_default ref
+);
+
+case @using.kind of
+  1 = @using_declaration
+| 2 = @using_directive
+| 3 = @using_enum_declaration
+;
+
+usings(
+    unique int id: @using,
+    int element_id: @element ref,
+    int location: @location_default ref,
+    int kind: int ref
+);
+
+/** The element which contains the `using` declaration. */
+using_container(
+    int parent: @element ref,
+    int child: @using ref
+);
+
+static_asserts(
+    unique int id: @static_assert,
+    int condition : @expr ref,
+    string message : string ref,
+    int location: @location_default ref,
+    int enclosing : @element ref
+);
+
+// each function has an ordered list of parameters
+#keyset[id, type_id]
+#keyset[function, index, type_id]
+params(
+    int id: @parameter,
+    int function: @parameterized_element ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+
+overrides(
+    int new: @function ref,
+    int old: @function ref
+);
+
+#keyset[id, type_id]
+membervariables(
+    int id: @membervariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+#keyset[id, type_id]
+globalvariables(
+    int id: @globalvariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+#keyset[id, type_id]
+localvariables(
+    int id: @localvariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+autoderivation(
+    unique int var: @variable ref,
+    int derivation_type: @type ref
+);
+
+orphaned_variables(
+    int var: @localvariable ref,
+    int function: @function ref
+)
+
+enumconstants(
+    unique int id: @enumconstant,
+    int parent: @usertype ref,
+    int index: int ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+
+@variable = @localscopevariable | @globalvariable | @membervariable;
+
+@localscopevariable = @localvariable | @parameter;
+
+/**
+ * Built-in types are the fundamental types, e.g., integral, floating, and void.
+ */
+case @builtintype.kind of
+   1 = @errortype
+|  2 = @unknowntype
+|  3 = @void
+|  4 = @boolean
+|  5 = @char
+|  6 = @unsigned_char
+|  7 = @signed_char
+|  8 = @short
+|  9 = @unsigned_short
+| 10 = @signed_short
+| 11 = @int
+| 12 = @unsigned_int
+| 13 = @signed_int
+| 14 = @long
+| 15 = @unsigned_long
+| 16 = @signed_long
+| 17 = @long_long
+| 18 = @unsigned_long_long
+| 19 = @signed_long_long
+// ... 20 Microsoft-specific __int8
+// ... 21 Microsoft-specific __int16
+// ... 22 Microsoft-specific __int32
+// ... 23 Microsoft-specific __int64
+| 24 = @float
+| 25 = @double
+| 26 = @long_double
+| 27 = @complex_float         // C99-specific _Complex float
+| 28 = @complex_double        // C99-specific _Complex double
+| 29 = @complex_long_double   // C99-specific _Complex long double
+| 30 = @imaginary_float       // C99-specific _Imaginary float
+| 31 = @imaginary_double      // C99-specific _Imaginary double
+| 32 = @imaginary_long_double // C99-specific _Imaginary long double
+| 33 = @wchar_t               // Microsoft-specific
+| 34 = @decltype_nullptr      // C++11
+| 35 = @int128                // __int128
+| 36 = @unsigned_int128       // unsigned __int128
+| 37 = @signed_int128         // signed __int128
+| 38 = @float128              // __float128
+| 39 = @complex_float128      // _Complex __float128
+// ... 40 _Decimal32
+// ... 41 _Decimal64
+// ... 42 _Decimal128
+| 43 = @char16_t
+| 44 = @char32_t
+| 45 = @std_float32           // _Float32
+| 46 = @float32x              // _Float32x
+| 47 = @std_float64           // _Float64
+| 48 = @float64x              // _Float64x
+| 49 = @std_float128          // _Float128
+// ... 50 _Float128x
+| 51 = @char8_t
+| 52 = @float16               // _Float16
+| 53 = @complex_float16       // _Complex _Float16
+| 54 = @fp16                  // __fp16
+| 55 = @std_bfloat16          // __bf16
+| 56 = @std_float16           // std::float16_t
+| 57 = @complex_std_float32   // _Complex _Float32
+| 58 = @complex_float32x      // _Complex _Float32x
+| 59 = @complex_std_float64   // _Complex _Float64
+| 60 = @complex_float64x      // _Complex _Float64x
+| 61 = @complex_std_float128  // _Complex _Float128
+| 62 = @mfp8                  // __mfp8
+| 63 = @scalable_vector_count // __SVCount_t
+| 64 = @complex_fp16          // _Complex __fp16
+| 65 = @complex_std_bfloat16  // _Complex __bf16
+| 66 = @complex_std_float16   // _Complex std::float16_t
+;
+
+builtintypes(
+    unique int id: @builtintype,
+    string name: string ref,
+    int kind: int ref,
+    int size: int ref,
+    int sign: int ref,
+    int alignment: int ref
+);
+
+/**
+ * Derived types are types that are directly derived from existing types and
+ * point to, refer to, transform type data to return a new type.
+ */
+case @derivedtype.kind of
+   1 = @pointer
+|  2 = @reference
+|  3 = @type_with_specifiers
+|  4 = @array
+|  5 = @gnu_vector
+|  6 = @routineptr
+|  7 = @routinereference
+|  8 = @rvalue_reference // C++11
+// ... 9 type_conforming_to_protocols deprecated
+| 10 = @block
+| 11 = @scalable_vector // Arm SVE
+;
+
+derivedtypes(
+    unique int id: @derivedtype,
+    string name: string ref,
+    int kind: int ref,
+    int type_id: @type ref
+);
+
+pointerishsize(unique int id: @derivedtype ref,
+    int size: int ref,
+    int alignment: int ref);
+
+arraysizes(
+    unique int id: @derivedtype ref,
+    int num_elements: int ref,
+    int bytesize: int ref,
+    int alignment: int ref
+);
+
+tupleelements(
+    unique int id: @derivedtype ref,
+    int num_elements: int ref
+);
+
+typedefbase(
+    unique int id: @usertype ref,
+    int type_id: @type ref
+);
+
+/**
+ * An instance of the C++11 `decltype` operator or C23 `typeof`/`typeof_unqual`
+ * operator taking an expression as its argument.  For example:
+ * ```
+ * int a;
+ * decltype(1+a) b;
+ * typeof(1+a) c;
+ * ```
+ * Here `expr` is `1+a`.
+ *
+ * Sometimes an additional pair of parentheses around the expression
+ * changes the semantics of the decltype, e.g.
+ * ```
+ * struct A { double x; };
+ * const A* a = new A();
+ * decltype( a->x ); // type is double
+ * decltype((a->x)); // type is const double&
+ * ```
+ * (Please consult the C++11 standard for more details).
+ * `parentheses_would_change_meaning` is `true` iff that is the case.
+ */
+
+/*
+case @decltype.kind of
+|  0 = @decltype
+|  1 = @typeof // The frontend does not differentiate between typeof and typeof_unqual
+;
+*/
+
+#keyset[id, expr]
+decltypes(
+    int id: @decltype,
+    int expr: @expr ref,
+    int kind: int ref,
+    int base_type: @type ref,
+    boolean parentheses_would_change_meaning: boolean ref
+);
+
+case @type_operator.kind of
+   0 = @typeof // The frontend does not differentiate between typeof and typeof_unqual
+|  1 = @underlying_type
+|  2 = @bases
+|  3 = @direct_bases
+|  4 = @add_lvalue_reference
+|  5 = @add_pointer
+|  6 = @add_rvalue_reference
+|  7 = @decay
+|  8 = @make_signed
+|  9 = @make_unsigned
+| 10 = @remove_all_extents
+| 11 = @remove_const
+| 12 = @remove_cv
+| 13 = @remove_cvref
+| 14 = @remove_extent
+| 15 = @remove_pointer
+| 16 = @remove_reference_t
+| 17 = @remove_restrict
+| 18 = @remove_volatile
+| 19 = @remove_reference
+;
+
+type_operators(
+    unique int id: @type_operator,
+    int arg_type: @type ref,
+    int kind: int ref,
+    int base_type: @type ref
+)
+
+case @usertype.kind of
+   0 = @unknown_usertype
+|  1 = @struct
+|  2 = @class
+|  3 = @union
+|  4 = @enum
+// ... 5 = @typedef deprecated        // classic C: typedef typedef type name
+// ... 6 = @template deprecated
+|  7 = @template_parameter
+|  8 = @template_template_parameter
+|  9 = @proxy_class                   // a proxy class associated with a template parameter
+// ... 10 objc_class deprecated
+// ... 11 objc_protocol deprecated
+// ... 12 objc_category deprecated
+| 13 = @scoped_enum
+// ... 14 = @using_alias deprecated   // a using name = type style typedef
+| 15 = @template_struct
+| 16 = @template_class
+| 17 = @template_union
+| 18 = @alias
+;
+
+usertypes(
+    unique int id: @usertype,
+    string name: string ref,
+    int kind: int ref
+);
+
+usertypesize(
+    unique int id: @usertype ref,
+    int size: int ref,
+    int alignment: int ref
+);
+
+usertype_final(unique int id: @usertype ref);
+
+usertype_uuid(
+    unique int id: @usertype ref,
+    string uuid: string ref
+);
+
+/*
+case @usertype.alias_kind of
+| 0 = @typedef
+| 1 = @alias
+*/
+
+usertype_alias_kind(
+    int id: @usertype ref,
+    int alias_kind: int ref
+)
+
+nontype_template_parameters(
+    int id: @expr ref
+);
+
+type_template_type_constraint(
+    int id: @usertype ref,
+    int constraint: @expr ref
+);
+
+mangled_name(
+    unique int id: @declaration ref,
+    int mangled_name : @mangledname,
+    boolean is_complete: boolean ref
+);
+
+is_pod_class(unique int id: @usertype ref);
+is_standard_layout_class(unique int id: @usertype ref);
+
+is_complete(unique int id: @usertype ref);
+
+is_class_template(unique int id: @usertype ref);
+class_instantiation(
+    int to: @usertype ref,
+    int from: @usertype ref
+);
+class_template_argument(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+class_template_argument_value(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+@user_or_decltype = @usertype | @decltype;
+
+is_proxy_class_for(
+    unique int id: @usertype ref,
+    int templ_param_id: @user_or_decltype ref
+);
+
+type_mentions(
+    unique int id: @type_mention,
+    int type_id: @type ref,
+    int location: @location_default ref,
+    // a_symbol_reference_kind from the frontend.
+    int kind: int ref
+);
+
+is_function_template(unique int id: @function ref);
+function_instantiation(
+    unique int to: @function ref,
+    int from: @function ref
+);
+function_template_argument(
+    int function_id: @function ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+function_template_argument_value(
+    int function_id: @function ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+is_variable_template(unique int id: @variable ref);
+variable_instantiation(
+    unique int to: @variable ref,
+    int from: @variable ref
+);
+variable_template_argument(
+    int variable_id: @variable ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+variable_template_argument_value(
+    int variable_id: @variable ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+template_template_instantiation(
+    int to: @usertype ref,
+    int from: @usertype ref
+);
+template_template_argument(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+template_template_argument_value(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+@concept = @concept_template | @concept_id;
+
+concept_templates(
+    unique int concept_id: @concept_template,
+    string name: string ref,
+    int location: @location_default ref
+);
+concept_instantiation(
+    unique int to: @concept_id ref,
+    int from: @concept_template ref
+);
+is_type_constraint(int concept_id: @concept_id ref);
+concept_template_argument(
+    int concept_id: @concept ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+concept_template_argument_value(
+    int concept_id: @concept ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+routinetypes(
+    unique int id: @routinetype,
+    int return_type: @type ref
+);
+
+routinetypeargs(
+    int routine: @routinetype ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+
+ptrtomembers(
+    unique int id: @ptrtomember,
+    int type_id: @type ref,
+    int class_id: @type ref
+);
+
+/*
+ specifiers for types, functions, and variables
+
+    "public",
+    "protected",
+    "private",
+
+    "const",
+    "volatile",
+    "static",
+
+    "pure",
+    "virtual",
+    "sealed", // Microsoft
+    "__interface", // Microsoft
+    "inline",
+    "explicit",
+
+    "near", // near far extension
+    "far", // near far extension
+    "__ptr32", // Microsoft
+    "__ptr64", // Microsoft
+    "__sptr", // Microsoft
+    "__uptr", // Microsoft
+    "dllimport", // Microsoft
+    "dllexport", // Microsoft
+    "thread", // Microsoft
+    "naked", // Microsoft
+    "microsoft_inline", // Microsoft
+    "forceinline", // Microsoft
+    "selectany", // Microsoft
+    "nothrow", // Microsoft
+    "novtable", // Microsoft
+    "noreturn", // Microsoft
+    "noinline", // Microsoft
+    "noalias", // Microsoft
+    "restrict", // Microsoft
+*/
+
+specifiers(
+    unique int id: @specifier,
+    unique string str: string ref
+);
+
+typespecifiers(
+    int type_id: @type ref,
+    int spec_id: @specifier ref
+);
+
+funspecifiers(
+    int func_id: @function ref,
+    int spec_id: @specifier ref
+);
+
+varspecifiers(
+    int var_id: @accessible ref,
+    int spec_id: @specifier ref
+);
+
+explicit_specifier_exprs(
+    unique int func_id: @function ref,
+    int constant: @expr ref
+)
+
+attributes(
+    unique int id: @attribute,
+    int kind: int ref,
+    string name: string ref,
+    string name_space: string ref,
+    int location: @location_default ref
+);
+
+case @attribute.kind of
+  0 = @gnuattribute
+| 1 = @stdattribute
+| 2 = @declspec
+| 3 = @msattribute
+| 4 = @alignas
+// ... 5 @objc_propertyattribute deprecated
+;
+
+attribute_args(
+    unique int id: @attribute_arg,
+    int kind: int ref,
+    int attribute: @attribute ref,
+    int index: int ref,
+    int location: @location_default ref
+);
+
+case @attribute_arg.kind of
+  0 = @attribute_arg_empty
+| 1 = @attribute_arg_token
+| 2 = @attribute_arg_constant
+| 3 = @attribute_arg_type
+| 4 = @attribute_arg_constant_expr
+| 5 = @attribute_arg_expr
+;
+
+attribute_arg_value(
+    unique int arg: @attribute_arg ref,
+    string value: string ref
+);
+attribute_arg_type(
+    unique int arg: @attribute_arg ref,
+    int type_id: @type ref
+);
+attribute_arg_constant(
+    unique int arg: @attribute_arg ref,
+    int constant: @expr ref
+)
+attribute_arg_expr(
+    unique int arg: @attribute_arg ref,
+    int expr: @expr ref
+)
+attribute_arg_name(
+    unique int arg: @attribute_arg ref,
+    string name: string ref
+);
+
+typeattributes(
+    int type_id: @type ref,
+    int spec_id: @attribute ref
+);
+
+funcattributes(
+    int func_id: @function ref,
+    int spec_id: @attribute ref
+);
+
+varattributes(
+    int var_id: @accessible ref,
+    int spec_id: @attribute ref
+);
+
+namespaceattributes(
+    int namespace_id: @namespace ref,
+    int spec_id: @attribute ref
+);
+
+stmtattributes(
+    int stmt_id: @stmt ref,
+    int spec_id: @attribute ref
+);
+
+@type = @builtintype
+      | @derivedtype
+      | @usertype
+      | @routinetype
+      | @ptrtomember
+      | @decltype
+      | @type_operator;
+
+unspecifiedtype(
+    unique int type_id: @type ref,
+    int unspecified_type_id: @type ref
+);
+
+member(
+    int parent: @type ref,
+    int index: int ref,
+    int child: @member ref
+);
+
+@enclosingfunction_child = @usertype | @variable | @namespace
+
+enclosingfunction(
+    unique int child: @enclosingfunction_child ref,
+    int parent: @function ref
+);
+
+derivations(
+    unique int derivation: @derivation,
+    int sub: @type ref,
+    int index: int ref,
+    int super: @type ref,
+    int location: @location_default ref
+);
+
+derspecifiers(
+    int der_id: @derivation ref,
+    int spec_id: @specifier ref
+);
+
+/**
+ * Contains the byte offset of the base class subobject within the derived
+ * class. Only holds for non-virtual base classes, but see table
+ * `virtual_base_offsets` for offsets of virtual base class subobjects.
+ */
+direct_base_offsets(
+    unique int der_id: @derivation ref,
+    int offset: int ref
+);
+
+/**
+ * Contains the byte offset of the virtual base class subobject for class
+ * `super` within a most-derived object of class `sub`. `super` can be either a
+ * direct or indirect base class.
+ */
+#keyset[sub, super]
+virtual_base_offsets(
+    int sub: @usertype ref,
+    int super: @usertype ref,
+    int offset: int ref
+);
+
+frienddecls(
+    unique int id: @frienddecl,
+    int type_id: @type ref,
+    int decl_id: @declaration ref,
+    int location: @location_default ref
+);
+
+@declaredtype = @usertype ;
+
+@declaration = @function
+             | @declaredtype
+             | @variable
+             | @enumconstant
+             | @frienddecl
+             | @concept_template;
+
+@member = @membervariable
+        | @function
+        | @declaredtype
+        | @enumconstant;
+
+@locatable = @diagnostic
+           | @declaration
+           | @ppd_include
+           | @ppd_define
+           | @macroinvocation
+           /*| @funcall*/
+           | @xmllocatable
+           | @attribute
+           | @attribute_arg;
+
+@namedscope = @namespace | @usertype;
+
+@element = @locatable
+         | @file
+         | @folder
+         | @specifier
+         | @type
+         | @expr
+         | @namespace
+         | @initialiser
+         | @stmt
+         | @derivation
+         | @comment
+         | @preprocdirect
+         | @fun_decl
+         | @var_decl
+         | @type_decl
+         | @namespace_decl
+         | @using
+         | @namequalifier
+         | @specialnamequalifyingelement
+         | @static_assert
+         | @type_mention
+         | @lambdacapture;
+
+@exprparent = @element;
+
+comments(
+    unique int id: @comment,
+    string contents: string ref,
+    int location: @location_default ref
+);
+
+commentbinding(
+    int id: @comment ref,
+    int element: @element ref
+);
+
+exprconv(
+    int converted: @expr ref,
+    unique int conversion: @expr ref
+);
+
+compgenerated(unique int id: @element ref);
+
+/**
+ * `destructor_call` destructs the `i`'th entity that should be
+ * destructed following `element`. Note that entities should be
+ * destructed in reverse construction order, so for a given `element`
+ * these should be called from highest to lowest `i`.
+ */
+#keyset[element, destructor_call]
+#keyset[element, i]
+synthetic_destructor_call(
+    int element: @element ref,
+    int i: int ref,
+    int destructor_call: @routineexpr ref
+);
+
+namespaces(
+    unique int id: @namespace,
+    string name: string ref
+);
+
+namespace_inline(
+    unique int id: @namespace ref
+);
+
+namespacembrs(
+    int parentid: @namespace ref,
+    unique int memberid: @namespacembr ref
+);
+
+@namespacembr = @declaration | @namespace;
+
+exprparents(
+    int expr_id: @expr ref,
+    int child_index: int ref,
+    int parent_id: @exprparent ref
+);
+
+expr_isload(unique int expr_id: @expr ref);
+
+@cast = @c_style_cast
+      | @const_cast
+      | @dynamic_cast
+      | @reinterpret_cast
+      | @static_cast
+      ;
+
+/*
+case @conversion.kind of
+  0 = @simple_conversion           // a numeric conversion, qualification conversion, or a reinterpret_cast
+| 1 = @bool_conversion             // conversion to 'bool'
+| 2 = @base_class_conversion       // a derived-to-base conversion
+| 3 = @derived_class_conversion    // a base-to-derived conversion
+| 4 = @pm_base_class_conversion    // a derived-to-base conversion of a pointer to member
+| 5 = @pm_derived_class_conversion // a base-to-derived conversion of a pointer to member
+| 6 = @glvalue_adjust              // an adjustment of the type of a glvalue
+| 7 = @prvalue_adjust              // an adjustment of the type of a prvalue
+;
+*/
+/**
+ * Describes the semantics represented by a cast expression. This is largely
+ * independent of the source syntax of the cast, so it is separate from the
+ * regular expression kind.
+ */
+conversionkinds(
+    unique int expr_id: @cast ref,
+    int kind: int ref
+);
+
+@conversion = @cast
+            | @array_to_pointer
+            | @parexpr
+            | @reference_to
+            | @ref_indirect
+            | @temp_init
+            | @c11_generic
+            ;
+
+/*
+case @funbindexpr.kind of
+  0 = @normal_call  // a normal call
+| 1 = @virtual_call // a virtual call
+| 2 = @adl_call     // a call whose target is only found by ADL
+;
+*/
+iscall(
+    unique int caller: @funbindexpr ref,
+    int kind: int ref
+);
+
+numtemplatearguments(
+    unique int expr_id: @expr ref,
+    int num: int ref
+);
+
+specialnamequalifyingelements(
+    unique int id: @specialnamequalifyingelement,
+    unique string name: string ref
+);
+
+@namequalifiableelement = @expr | @namequalifier;
+@namequalifyingelement = @namespace
+                       | @specialnamequalifyingelement
+                       | @usertype
+                       | @decltype;
+
+namequalifiers(
+    unique int id: @namequalifier,
+    unique int qualifiableelement: @namequalifiableelement ref,
+    int qualifyingelement: @namequalifyingelement ref,
+    int location: @location_default ref
+);
+
+varbind(
+    int expr: @varbindexpr ref,
+    int var: @accessible ref
+);
+
+funbind(
+    int expr: @funbindexpr ref,
+    int fun: @function ref
+);
+
+@any_new_expr = @new_expr
+              | @new_array_expr;
+
+@new_or_delete_expr = @any_new_expr
+                    | @delete_expr
+                    | @delete_array_expr;
+
+@prefix_crement_expr = @preincrexpr | @predecrexpr;
+
+@postfix_crement_expr = @postincrexpr | @postdecrexpr;
+
+@increment_expr = @preincrexpr | @postincrexpr;
+
+@decrement_expr = @predecrexpr | @postdecrexpr;
+
+@crement_expr = @increment_expr | @decrement_expr;
+
+@un_arith_op_expr = @arithnegexpr
+                  | @unaryplusexpr
+                  | @conjugation
+                  | @realpartexpr
+                  | @imagpartexpr
+                  | @crement_expr
+                  ;
+
+@un_bitwise_op_expr = @complementexpr;
+
+@un_log_op_expr = @notexpr;
+
+@un_op_expr = @address_of
+            | @indirect
+            | @un_arith_op_expr
+            | @un_bitwise_op_expr
+            | @builtinaddressof
+            | @vec_fill
+            | @un_log_op_expr
+            | @co_await
+            | @co_yield
+            ;
+
+@bin_log_op_expr = @andlogicalexpr | @orlogicalexpr;
+
+@cmp_op_expr = @eq_op_expr | @rel_op_expr;
+
+@eq_op_expr = @eqexpr | @neexpr;
+
+@rel_op_expr = @gtexpr
+             | @ltexpr
+             | @geexpr
+             | @leexpr
+             | @spaceshipexpr
+             ;
+
+@bin_bitwise_op_expr = @lshiftexpr
+                     | @rshiftexpr
+                     | @andexpr
+                     | @orexpr
+                     | @xorexpr
+                     ;
+
+@p_arith_op_expr = @paddexpr
+                 | @psubexpr
+                 | @pdiffexpr
+                 ;
+
+@bin_arith_op_expr = @addexpr
+                   | @subexpr
+                   | @mulexpr
+                   | @divexpr
+                   | @remexpr
+                   | @jmulexpr
+                   | @jdivexpr
+                   | @fjaddexpr
+                   | @jfaddexpr
+                   | @fjsubexpr
+                   | @jfsubexpr
+                   | @minexpr
+                   | @maxexpr
+                   | @p_arith_op_expr
+                   ;
+
+@bin_op_expr = @bin_arith_op_expr
+             | @bin_bitwise_op_expr
+             | @cmp_op_expr
+             | @bin_log_op_expr
+             ;
+
+@op_expr = @un_op_expr
+         | @bin_op_expr
+         | @assign_expr
+         | @conditionalexpr
+         ;
+
+@assign_arith_expr = @assignaddexpr
+                   | @assignsubexpr
+                   | @assignmulexpr
+                   | @assigndivexpr
+                   | @assignremexpr
+                   ;
+
+@assign_bitwise_expr = @assignandexpr
+                     | @assignorexpr
+                     | @assignxorexpr
+                     | @assignlshiftexpr
+                     | @assignrshiftexpr
+                     ;
+
+@assign_pointer_expr = @assignpaddexpr
+                     | @assignpsubexpr
+                     ;
+
+@assign_op_expr = @assign_arith_expr
+                | @assign_bitwise_expr
+                | @assign_pointer_expr
+                ;
+
+@assign_expr = @assignexpr | @assign_op_expr | @blockassignexpr
+
+/*
+  Binary encoding of the allocator form.
+
+  case @allocator.form of
+    0 = plain
+  | 1 = alignment
+  ;
+*/
+
+/**
+ * The allocator function associated with a `new` or `new[]` expression.
+ * The `form` column specified whether the allocation call contains an alignment
+ * argument.
+ */
+expr_allocator(
+    unique int expr: @any_new_expr ref,
+    int func: @function ref,
+    int form: int ref
+);
+
+/*
+  Binary encoding of the deallocator form.
+
+  case @deallocator.form of
+    0 = plain
+  | 1 = size
+  | 2 = alignment
+  | 4 = destroying_delete
+  ;
+*/
+
+/**
+ * The deallocator function associated with a `delete`, `delete[]`, `new`, or
+ * `new[]` expression. For a `new` or `new[]` expression, the deallocator is the
+ * one used to free memory if the initialization throws an exception.
+ * The `form` column specifies whether the deallocation call contains a size
+ * argument, and alignment argument, or both.
+ */
+expr_deallocator(
+    unique int expr: @new_or_delete_expr ref,
+    int func: @function ref,
+    int form: int ref
+);
+
+/**
+ * Holds if the `@conditionalexpr` is of the two operand form
+ * `guard ? : false`.
+ */
+expr_cond_two_operand(
+    unique int cond: @conditionalexpr ref
+);
+
+/**
+ * The guard of `@conditionalexpr` `guard ? true : false`
+ */
+expr_cond_guard(
+    unique int cond: @conditionalexpr ref,
+    int guard: @expr ref
+);
+
+/**
+ * The expression used when the guard of `@conditionalexpr`
+ * `guard ? true : false` holds. For the two operand form
+ * `guard ?: false` consider using `expr_cond_guard` instead.
+ */
+expr_cond_true(
+    unique int cond: @conditionalexpr ref,
+    int true: @expr ref
+);
+
+/**
+ * The expression used when the guard of `@conditionalexpr`
+ * `guard ? true : false` does not hold.
+ */
+expr_cond_false(
+    unique int cond: @conditionalexpr ref,
+    int false: @expr ref
+);
+
+/** A string representation of the value. */
+values(
+    unique int id: @value,
+    string str: string ref
+);
+
+/** The actual text in the source code for the value, if any. */
+valuetext(
+    unique int id: @value ref,
+    string text: string ref
+);
+
+valuebind(
+    int val: @value ref,
+    unique int expr: @expr ref
+);
+
+fieldoffsets(
+    unique int id: @variable ref,
+    int byteoffset: int ref,
+    int bitoffset: int ref
+);
+
+bitfield(
+    unique int id: @variable ref,
+    int bits: int ref,
+    int declared_bits: int ref
+);
+
+/* TODO
+memberprefix(
+    int member: @expr ref,
+    int prefix: @expr ref
+);
+*/
+
+/*
+   kind(1) = mbrcallexpr
+   kind(2) = mbrptrcallexpr
+   kind(3) = mbrptrmbrcallexpr
+   kind(4) = ptrmbrptrmbrcallexpr
+   kind(5) = mbrreadexpr // x.y
+   kind(6) = mbrptrreadexpr // p->y
+   kind(7) = mbrptrmbrreadexpr // x.*pm
+   kind(8) = mbrptrmbrptrreadexpr // x->*pm
+   kind(9) = staticmbrreadexpr // static x.y
+   kind(10) = staticmbrptrreadexpr // static p->y
+*/
+/* TODO
+memberaccess(
+    int member: @expr ref,
+    int kind: int ref
+);
+*/
+
+initialisers(
+    unique int init: @initialiser,
+    int var: @accessible ref,
+    unique int expr: @expr ref,
+    int location: @location_default ref
+);
+
+braced_initialisers(
+    int init: @initialiser ref
+);
+
+/**
+ * An ancestor for the expression, for cases in which we cannot
+ * otherwise find the expression's parent.
+ */
+expr_ancestor(
+    int exp: @expr ref,
+    int ancestor: @element ref
+);
+
+exprs(
+    unique int id: @expr,
+    int kind: int ref,
+    int location: @location_default ref
+);
+
+expr_reuse(
+    int reuse: @expr ref,
+    int original: @expr ref,
+    int value_category: int ref
+)
+
+/*
+  case @value.category of
+    1 = prval
+  | 2 = xval
+  | 3 = lval
+  ;
+*/
+expr_types(
+    int id: @expr ref,
+    int typeid: @type ref,
+    int value_category: int ref
+);
+
+case @expr.kind of
+    1 = @errorexpr
+|   2 = @address_of // & AddressOfExpr
+|   3 = @reference_to // ReferenceToExpr (implicit?)
+|   4 = @indirect // * PointerDereferenceExpr
+|   5 = @ref_indirect // ReferenceDereferenceExpr (implicit?)
+// ...
+|   8 = @array_to_pointer // (???)
+|   9 = @vacuous_destructor_call // VacuousDestructorCall
+// ...
+|  11 = @assume // Microsoft
+|  12 = @parexpr
+|  13 = @arithnegexpr
+|  14 = @unaryplusexpr
+|  15 = @complementexpr
+|  16 = @notexpr
+|  17 = @conjugation // GNU ~ operator
+|  18 = @realpartexpr // GNU __real
+|  19 = @imagpartexpr // GNU __imag
+|  20 = @postincrexpr
+|  21 = @postdecrexpr
+|  22 = @preincrexpr
+|  23 = @predecrexpr
+|  24 = @conditionalexpr
+|  25 = @addexpr
+|  26 = @subexpr
+|  27 = @mulexpr
+|  28 = @divexpr
+|  29 = @remexpr
+|  30 = @jmulexpr // C99 mul imaginary
+|  31 = @jdivexpr // C99 div imaginary
+|  32 = @fjaddexpr // C99 add real + imaginary
+|  33 = @jfaddexpr // C99 add imaginary + real
+|  34 = @fjsubexpr // C99 sub real - imaginary
+|  35 = @jfsubexpr // C99 sub imaginary - real
+|  36 = @paddexpr // pointer add (pointer + int or int + pointer)
+|  37 = @psubexpr // pointer sub (pointer - integer)
+|  38 = @pdiffexpr // difference between two pointers
+|  39 = @lshiftexpr
+|  40 = @rshiftexpr
+|  41 = @andexpr
+|  42 = @orexpr
+|  43 = @xorexpr
+|  44 = @eqexpr
+|  45 = @neexpr
+|  46 = @gtexpr
+|  47 = @ltexpr
+|  48 = @geexpr
+|  49 = @leexpr
+|  50 = @minexpr // GNU minimum
+|  51 = @maxexpr // GNU maximum
+|  52 = @assignexpr
+|  53 = @assignaddexpr
+|  54 = @assignsubexpr
+|  55 = @assignmulexpr
+|  56 = @assigndivexpr
+|  57 = @assignremexpr
+|  58 = @assignlshiftexpr
+|  59 = @assignrshiftexpr
+|  60 = @assignandexpr
+|  61 = @assignorexpr
+|  62 = @assignxorexpr
+|  63 = @assignpaddexpr // assign pointer add
+|  64 = @assignpsubexpr // assign pointer sub
+|  65 = @andlogicalexpr
+|  66 = @orlogicalexpr
+|  67 = @commaexpr
+|  68 = @subscriptexpr // access to member of an array, e.g., a[5]
+// ...  69 @objc_subscriptexpr deprecated
+// ...  70 @cmdaccess deprecated
+// ...
+|  73 = @virtfunptrexpr
+|  74 = @callexpr
+// ...  75 @msgexpr_normal deprecated
+// ...  76 @msgexpr_super deprecated
+// ...  77 @atselectorexpr deprecated
+// ...  78 @atprotocolexpr deprecated
+|  79 = @vastartexpr
+|  80 = @vaargexpr
+|  81 = @vaendexpr
+|  82 = @vacopyexpr
+// ...  83 @atencodeexpr deprecated
+|  84 = @varaccess
+|  85 = @thisaccess
+// ...  86 @objc_box_expr deprecated
+|  87 = @new_expr
+|  88 = @delete_expr
+|  89 = @throw_expr
+|  90 = @condition_decl // a variable declared in a condition, e.g., if(int x = y > 2)
+|  91 = @braced_init_list
+|  92 = @type_id
+|  93 = @runtime_sizeof
+|  94 = @runtime_alignof
+|  95 = @sizeof_pack
+|  96 = @expr_stmt // GNU extension
+|  97 = @routineexpr
+|  98 = @type_operand // used to access a type in certain contexts (haven't found any examples yet....)
+|  99 = @offsetofexpr // offsetof ::= type and field
+| 100 = @hasassignexpr // __has_assign ::= type
+| 101 = @hascopyexpr // __has_copy ::= type
+| 102 = @hasnothrowassign // __has_nothrow_assign ::= type
+| 103 = @hasnothrowconstr // __has_nothrow_constructor ::= type
+| 104 = @hasnothrowcopy // __has_nothrow_copy ::= type
+| 105 = @hastrivialassign // __has_trivial_assign ::= type
+| 106 = @hastrivialconstr // __has_trivial_constructor ::= type
+| 107 = @hastrivialcopy // __has_trivial_copy ::= type
+| 108 = @hasuserdestr // __has_user_destructor ::= type
+| 109 = @hasvirtualdestr // __has_virtual_destructor ::= type
+| 110 = @isabstractexpr // __is_abstract ::= type
+| 111 = @isbaseofexpr // __is_base_of ::= type type
+| 112 = @isclassexpr // __is_class ::= type
+| 113 = @isconvtoexpr // __is_convertible_to ::= type type
+| 114 = @isemptyexpr // __is_empty ::= type
+| 115 = @isenumexpr // __is_enum ::= type
+| 116 = @ispodexpr // __is_pod ::= type
+| 117 = @ispolyexpr // __is_polymorphic ::= type
+| 118 = @isunionexpr // __is_union ::= type
+| 119 = @typescompexpr // GNU __builtin_types_compatible ::= type type
+| 120 = @intaddrexpr // frontend internal builtin, used to implement offsetof
+// ...
+| 122 = @hastrivialdestructor // __has_trivial_destructor ::= type
+| 123 = @literal
+| 124 = @uuidof
+| 127 = @aggregateliteral
+| 128 = @delete_array_expr
+| 129 = @new_array_expr
+// ... 130 @objc_array_literal deprecated
+// ... 131 @objc_dictionary_literal deprecated
+| 132 = @foldexpr
+// ...
+| 200 = @ctordirectinit
+| 201 = @ctorvirtualinit
+| 202 = @ctorfieldinit
+| 203 = @ctordelegatinginit
+| 204 = @dtordirectdestruct
+| 205 = @dtorvirtualdestruct
+| 206 = @dtorfielddestruct
+// ...
+| 210 = @static_cast
+| 211 = @reinterpret_cast
+| 212 = @const_cast
+| 213 = @dynamic_cast
+| 214 = @c_style_cast
+| 215 = @lambdaexpr
+| 216 = @param_ref
+| 217 = @noopexpr
+// ...
+| 294 = @istriviallyconstructibleexpr
+| 295 = @isdestructibleexpr
+| 296 = @isnothrowdestructibleexpr
+| 297 = @istriviallydestructibleexpr
+| 298 = @istriviallyassignableexpr
+| 299 = @isnothrowassignableexpr
+| 300 = @istrivialexpr
+| 301 = @isstandardlayoutexpr
+| 302 = @istriviallycopyableexpr
+| 303 = @isliteraltypeexpr
+| 304 = @hastrivialmoveconstructorexpr
+| 305 = @hastrivialmoveassignexpr
+| 306 = @hasnothrowmoveassignexpr
+| 307 = @isconstructibleexpr
+| 308 = @isnothrowconstructibleexpr
+| 309 = @hasfinalizerexpr
+| 310 = @isdelegateexpr
+| 311 = @isinterfaceclassexpr
+| 312 = @isrefarrayexpr
+| 313 = @isrefclassexpr
+| 314 = @issealedexpr
+| 315 = @issimplevalueclassexpr
+| 316 = @isvalueclassexpr
+| 317 = @isfinalexpr
+| 319 = @noexceptexpr
+| 320 = @builtinshufflevector
+| 321 = @builtinchooseexpr
+| 322 = @builtinaddressof
+| 323 = @vec_fill
+| 324 = @builtinconvertvector
+| 325 = @builtincomplex
+| 326 = @spaceshipexpr
+| 327 = @co_await
+| 328 = @co_yield
+| 329 = @temp_init
+| 330 = @isassignable
+| 331 = @isaggregate
+| 332 = @hasuniqueobjectrepresentations
+| 333 = @builtinbitcast
+| 334 = @builtinshuffle
+| 335 = @blockassignexpr
+| 336 = @issame
+| 337 = @isfunction
+| 338 = @islayoutcompatible
+| 339 = @ispointerinterconvertiblebaseof
+| 340 = @isarray
+| 341 = @arrayrank
+| 342 = @arrayextent
+| 343 = @isarithmetic
+| 344 = @iscompletetype
+| 345 = @iscompound
+| 346 = @isconst
+| 347 = @isfloatingpoint
+| 348 = @isfundamental
+| 349 = @isintegral
+| 350 = @islvaluereference
+| 351 = @ismemberfunctionpointer
+| 352 = @ismemberobjectpointer
+| 353 = @ismemberpointer
+| 354 = @isobject
+| 355 = @ispointer
+| 356 = @isreference
+| 357 = @isrvaluereference
+| 358 = @isscalar
+| 359 = @issigned
+| 360 = @isunsigned
+| 361 = @isvoid
+| 362 = @isvolatile
+| 363 = @reuseexpr
+| 364 = @istriviallycopyassignable
+| 365 = @isassignablenopreconditioncheck
+| 366 = @referencebindstotemporary
+| 367 = @issameas
+| 368 = @builtinhasattribute
+| 369 = @ispointerinterconvertiblewithclass
+| 370 = @builtinispointerinterconvertiblewithclass
+| 371 = @iscorrespondingmember
+| 372 = @builtiniscorrespondingmember
+| 373 = @isboundedarray
+| 374 = @isunboundedarray
+| 375 = @isreferenceable
+| 378 = @isnothrowconvertible
+| 379 = @referenceconstructsfromtemporary
+| 380 = @referenceconvertsfromtemporary
+| 381 = @isconvertible
+| 382 = @isvalidwinrttype
+| 383 = @iswinclass
+| 384 = @iswininterface
+| 385 = @istriviallyequalitycomparable
+| 386 = @isscopedenum
+| 387 = @istriviallyrelocatable
+| 388 = @datasizeof
+| 389 = @c11_generic
+| 390 = @requires_expr
+| 391 = @nested_requirement
+| 392 = @compound_requirement
+| 393 = @concept_id
+;
+
+@var_args_expr = @vastartexpr
+               | @vaendexpr
+               | @vaargexpr
+               | @vacopyexpr
+               ;
+
+@builtin_op = @var_args_expr
+            | @noopexpr
+            | @offsetofexpr
+            | @intaddrexpr
+            | @hasassignexpr
+            | @hascopyexpr
+            | @hasnothrowassign
+            | @hasnothrowconstr
+            | @hasnothrowcopy
+            | @hastrivialassign
+            | @hastrivialconstr
+            | @hastrivialcopy
+            | @hastrivialdestructor
+            | @hasuserdestr
+            | @hasvirtualdestr
+            | @isabstractexpr
+            | @isbaseofexpr
+            | @isclassexpr
+            | @isconvtoexpr
+            | @isemptyexpr
+            | @isenumexpr
+            | @ispodexpr
+            | @ispolyexpr
+            | @isunionexpr
+            | @typescompexpr
+            | @builtinshufflevector
+            | @builtinconvertvector
+            | @builtinaddressof
+            | @istriviallyconstructibleexpr
+            | @isdestructibleexpr
+            | @isnothrowdestructibleexpr
+            | @istriviallydestructibleexpr
+            | @istriviallyassignableexpr
+            | @isnothrowassignableexpr
+            | @istrivialexpr
+            | @isstandardlayoutexpr
+            | @istriviallycopyableexpr
+            | @isliteraltypeexpr
+            | @hastrivialmoveconstructorexpr
+            | @hastrivialmoveassignexpr
+            | @hasnothrowmoveassignexpr
+            | @isconstructibleexpr
+            | @isnothrowconstructibleexpr
+            | @hasfinalizerexpr
+            | @isdelegateexpr
+            | @isinterfaceclassexpr
+            | @isrefarrayexpr
+            | @isrefclassexpr
+            | @issealedexpr
+            | @issimplevalueclassexpr
+            | @isvalueclassexpr
+            | @isfinalexpr
+            | @builtinchooseexpr
+            | @builtincomplex
+            | @isassignable
+            | @isaggregate
+            | @hasuniqueobjectrepresentations
+            | @builtinbitcast
+            | @builtinshuffle
+            | @issame
+            | @isfunction
+            | @islayoutcompatible
+            | @ispointerinterconvertiblebaseof
+            | @isarray
+            | @arrayrank
+            | @arrayextent
+            | @isarithmetic
+            | @iscompletetype
+            | @iscompound
+            | @isconst
+            | @isfloatingpoint
+            | @isfundamental
+            | @isintegral
+            | @islvaluereference
+            | @ismemberfunctionpointer
+            | @ismemberobjectpointer
+            | @ismemberpointer
+            | @isobject
+            | @ispointer
+            | @isreference
+            | @isrvaluereference
+            | @isscalar
+            | @issigned
+            | @isunsigned
+            | @isvoid
+            | @isvolatile
+            | @istriviallycopyassignable
+            | @isassignablenopreconditioncheck
+            | @referencebindstotemporary
+            | @issameas
+            | @builtinhasattribute
+            | @ispointerinterconvertiblewithclass
+            | @builtinispointerinterconvertiblewithclass
+            | @iscorrespondingmember
+            | @builtiniscorrespondingmember
+            | @isboundedarray
+            | @isunboundedarray
+            | @isreferenceable
+            | @isnothrowconvertible
+            | @referenceconstructsfromtemporary
+            | @referenceconvertsfromtemporary
+            | @isconvertible
+            | @isvalidwinrttype
+            | @iswinclass
+            | @iswininterface
+            | @istriviallyequalitycomparable
+            | @isscopedenum
+            | @istriviallyrelocatable
+            ;
+
+compound_requirement_is_noexcept(
+    int expr: @compound_requirement ref
+);
+
+new_allocated_type(
+    unique int expr: @new_expr ref,
+    int type_id: @type ref
+);
+
+new_array_allocated_type(
+    unique int expr: @new_array_expr ref,
+    int type_id: @type ref
+);
+
+/**
+ * The field being initialized by an initializer expression within an aggregate
+ * initializer for a class/struct/union. Position is used to sort repeated initializers.
+ */
+#keyset[aggregate, position]
+aggregate_field_init(
+    int aggregate: @aggregateliteral ref,
+    int initializer: @expr ref,
+    int field: @membervariable ref,
+    int position: int ref,
+    boolean is_designated: boolean ref
+);
+
+/**
+ * The index of the element being initialized by an initializer expression
+ * within an aggregate initializer for an array. Position is used to sort repeated initializers.
+ */
+#keyset[aggregate, position]
+aggregate_array_init(
+    int aggregate: @aggregateliteral ref,
+    int initializer: @expr ref,
+    int element_index: int ref,
+    int position: int ref,
+    boolean is_designated: boolean ref
+);
+
+@ctorinit = @ctordirectinit
+          | @ctorvirtualinit
+          | @ctorfieldinit
+          | @ctordelegatinginit;
+@dtordestruct = @dtordirectdestruct
+              | @dtorvirtualdestruct
+              | @dtorfielddestruct;
+
+
+condition_decl_bind(
+    unique int expr: @condition_decl ref,
+    unique int decl: @declaration ref
+);
+
+typeid_bind(
+    unique int expr: @type_id ref,
+    int type_id: @type ref
+);
+
+uuidof_bind(
+    unique int expr: @uuidof ref,
+    int type_id: @type ref
+);
+
+@sizeof_or_alignof = @runtime_sizeof | @runtime_alignof | @datasizeof | @sizeof_pack;
+
+sizeof_bind(
+    unique int expr: @sizeof_or_alignof ref,
+    int type_id: @type ref
+);
+
+code_block(
+    unique int block: @literal ref,
+    unique int routine: @function ref
+);
+
+lambdas(
+    unique int expr: @lambdaexpr ref,
+    string default_capture: string ref,
+    boolean has_explicit_return_type: boolean ref,
+    boolean has_explicit_parameter_list: boolean ref
+);
+
+lambda_capture(
+    unique int id: @lambdacapture,
+    int lambda: @lambdaexpr ref,
+    int index: int ref,
+    int field: @membervariable ref,
+    boolean captured_by_reference: boolean ref,
+    boolean is_implicit: boolean ref,
+    int location: @location_default ref
+);
+
+@funbindexpr = @routineexpr
+             | @new_expr
+             | @delete_expr
+             | @delete_array_expr
+             | @ctordirectinit
+             | @ctorvirtualinit
+             | @ctordelegatinginit
+             | @dtordirectdestruct
+             | @dtorvirtualdestruct;
+
+@varbindexpr = @varaccess | @ctorfieldinit | @dtorfielddestruct;
+@addressable = @function | @variable ;
+@accessible = @addressable | @enumconstant ;
+
+@access = @varaccess | @routineexpr ;
+
+fold(
+    int expr: @foldexpr ref,
+    string operator: string ref,
+    boolean is_left_fold: boolean ref
+);
+
+stmts(
+    unique int id: @stmt,
+    int kind: int ref,
+    int location: @location_default ref
+);
+
+case @stmt.kind of
+    1 = @stmt_expr
+|   2 = @stmt_if
+|   3 = @stmt_while
+|   4 = @stmt_goto
+|   5 = @stmt_label
+|   6 = @stmt_return
+|   7 = @stmt_block
+|   8 = @stmt_end_test_while // do { ... } while ( ... )
+|   9 = @stmt_for
+|  10 = @stmt_switch_case
+|  11 = @stmt_switch
+|  13 = @stmt_asm // "asm" statement or the body of an asm function
+|  15 = @stmt_try_block
+|  16 = @stmt_microsoft_try // Microsoft
+|  17 = @stmt_decl
+|  18 = @stmt_set_vla_size // C99
+|  19 = @stmt_vla_decl // C99
+|  25 = @stmt_assigned_goto // GNU
+|  26 = @stmt_empty
+|  27 = @stmt_continue
+|  28 = @stmt_break
+|  29 = @stmt_range_based_for // C++11
+// ...  30 @stmt_at_autoreleasepool_block deprecated
+// ...  31 @stmt_objc_for_in deprecated
+// ...  32 @stmt_at_synchronized deprecated
+|  33 = @stmt_handler
+// ...  34 @stmt_finally_end deprecated
+|  35 = @stmt_constexpr_if
+|  37 = @stmt_co_return
+|  38 = @stmt_consteval_if
+|  39 = @stmt_not_consteval_if
+|  40 = @stmt_leave
+;
+
+type_vla(
+    int type_id: @type ref,
+    int decl: @stmt_vla_decl ref
+);
+
+variable_vla(
+    int var: @variable ref,
+    int decl: @stmt_vla_decl ref
+);
+
+type_is_vla(unique int type_id: @derivedtype ref)
+
+if_initialization(
+    unique int if_stmt: @stmt_if ref,
+    int init_id: @stmt ref
+);
+
+if_then(
+    unique int if_stmt: @stmt_if ref,
+    int then_id: @stmt ref
+);
+
+if_else(
+    unique int if_stmt: @stmt_if ref,
+    int else_id: @stmt ref
+);
+
+constexpr_if_initialization(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int init_id: @stmt ref
+);
+
+constexpr_if_then(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int then_id: @stmt ref
+);
+
+constexpr_if_else(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int else_id: @stmt ref
+);
+
+@stmt_consteval_or_not_consteval_if = @stmt_consteval_if | @stmt_not_consteval_if;
+
+consteval_if_then(
+    unique int constexpr_if_stmt: @stmt_consteval_or_not_consteval_if ref,
+    int then_id: @stmt ref
+);
+
+consteval_if_else(
+    unique int constexpr_if_stmt: @stmt_consteval_or_not_consteval_if ref,
+    int else_id: @stmt ref
+);
+
+while_body(
+    unique int while_stmt: @stmt_while ref,
+    int body_id: @stmt ref
+);
+
+do_body(
+    unique int do_stmt: @stmt_end_test_while ref,
+    int body_id: @stmt ref
+);
+
+switch_initialization(
+    unique int switch_stmt: @stmt_switch ref,
+    int init_id: @stmt ref
+);
+
+#keyset[switch_stmt, index]
+switch_case(
+    int switch_stmt: @stmt_switch ref,
+    int index: int ref,
+    int case_id: @stmt_switch_case ref
+);
+
+switch_body(
+    unique int switch_stmt: @stmt_switch ref,
+    int body_id: @stmt ref
+);
+
+@stmt_for_or_range_based_for = @stmt_for
+                             | @stmt_range_based_for;
+
+for_initialization(
+    unique int for_stmt: @stmt_for_or_range_based_for ref,
+    int init_id: @stmt ref
+);
+
+for_condition(
+    unique int for_stmt: @stmt_for ref,
+    int condition_id: @expr ref
+);
+
+for_update(
+    unique int for_stmt: @stmt_for ref,
+    int update_id: @expr ref
+);
+
+for_body(
+    unique int for_stmt: @stmt_for ref,
+    int body_id: @stmt ref
+);
+
+@stmtparent = @stmt | @expr_stmt ;
+stmtparents(
+    unique int id: @stmt ref,
+    int index: int ref,
+    int parent: @stmtparent ref
+);
+
+ishandler(unique int block: @stmt_block ref);
+
+@cfgnode = @stmt | @expr | @function | @initialiser ;
+
+stmt_decl_bind(
+    int stmt: @stmt_decl ref,
+    int num: int ref,
+    int decl: @declaration ref
+);
+
+stmt_decl_entry_bind(
+    int stmt: @stmt_decl ref,
+    int num: int ref,
+    int decl_entry: @element ref
+);
+
+@parameterized_element = @function | @stmt_block | @requires_expr;
+
+blockscope(
+    unique int block: @stmt_block ref,
+    int enclosing: @parameterized_element ref
+);
+
+@jump = @stmt_goto | @stmt_break | @stmt_continue | @stmt_leave;
+
+@jumporlabel = @jump | @stmt_label | @literal;
+
+jumpinfo(
+    unique int id: @jumporlabel ref,
+    string str: string ref,
+    int target: @stmt ref
+);
+
+preprocdirects(
+    unique int id: @preprocdirect,
+    int kind: int ref,
+    int location: @location_default ref
+);
+case @preprocdirect.kind of
+   0 = @ppd_if
+|  1 = @ppd_ifdef
+|  2 = @ppd_ifndef
+|  3 = @ppd_elif
+|  4 = @ppd_else
+|  5 = @ppd_endif
+|  6 = @ppd_plain_include
+|  7 = @ppd_define
+|  8 = @ppd_undef
+|  9 = @ppd_line
+| 10 = @ppd_error
+| 11 = @ppd_pragma
+| 12 = @ppd_objc_import
+| 13 = @ppd_include_next
+| 14 = @ppd_ms_import
+| 15 = @ppd_elifdef
+| 16 = @ppd_elifndef
+| 18 = @ppd_warning
+;
+
+@ppd_include = @ppd_plain_include | @ppd_objc_import | @ppd_include_next | @ppd_ms_import;
+
+@ppd_branch = @ppd_if | @ppd_ifdef | @ppd_ifndef | @ppd_elif | @ppd_elifdef | @ppd_elifndef;
+
+preprocpair(
+    int begin : @ppd_branch ref,
+    int elseelifend : @preprocdirect ref
+);
+
+preproctrue(int branch : @ppd_branch ref);
+preprocfalse(int branch : @ppd_branch ref);
+
+preproctext(
+    unique int id: @preprocdirect ref,
+    string head: string ref,
+    string body: string ref
+);
+
+includes(
+    unique int id: @ppd_include ref,
+    int included: @file ref
+);
+
+link_targets(
+    int id: @link_target,
+    int binary: @file ref
+);
+
+link_parent(
+    int element : @element ref,
+    int link_target : @link_target ref
+);
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
diff --git a/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/semmlecode.cpp.dbscheme b/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/semmlecode.cpp.dbscheme
new file mode 100644
index 000000000000..b8173c6954a3
--- /dev/null
+++ b/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/semmlecode.cpp.dbscheme
@@ -0,0 +1,2473 @@
+
+/*- Compilations -*/
+
+/**
+ * An invocation of the compiler. Note that more than one file may be
+ * compiled per invocation. For example, this command compiles three
+ * source files:
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * The `id` simply identifies the invocation, while `cwd` is the working
+ * directory from which the compiler was invoked.
+ */
+compilations(
+    /**
+     * An invocation of the compiler. Note that more than one file may
+     * be compiled per invocation. For example, this command compiles
+     * three source files:
+     *
+     *   gcc -c f1.c f2.c f3.c
+     */
+    unique int id : @compilation,
+    string cwd : string ref
+);
+
+/**
+ * The arguments that were passed to the extractor for a compiler
+ * invocation. If `id` is for the compiler invocation
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * then typically there will be rows for
+ *
+ * num | arg
+ * --- | ---
+ * 0   | *path to extractor*
+ * 1   | `--mimic`
+ * 2   | `/usr/bin/gcc`
+ * 3   | `-c`
+ * 4   | f1.c
+ * 5   | f2.c
+ * 6   | f3.c
+ */
+#keyset[id, num]
+compilation_args(
+    int id : @compilation ref,
+    int num : int ref,
+    string arg : string ref
+);
+
+/**
+ * The expanded arguments that were passed to the extractor for a
+ * compiler invocation. This is similar to `compilation_args`, but
+ * for a `@someFile` argument, it includes the arguments from that
+ * file, rather than just taking the argument literally.
+ */
+#keyset[id, num]
+compilation_expanded_args(
+    int id : @compilation ref,
+    int num : int ref,
+    string arg : string ref
+);
+
+/**
+ * Optionally, record the build mode for each compilation.
+ */
+compilation_build_mode(
+    unique int id : @compilation ref,
+    int mode : int ref
+);
+
+/*
+case @compilation_build_mode.mode of
+  0 = @build_mode_none
+| 1 = @build_mode_manual
+| 2 = @build_mode_auto
+;
+*/
+
+/**
+ * The source files that are compiled by a compiler invocation.
+ * If `id` is for the compiler invocation
+ *
+ *   gcc -c f1.c f2.c f3.c
+ *
+ * then there will be rows for
+ *
+ * num | arg
+ * --- | ---
+ * 0   | f1.c
+ * 1   | f2.c
+ * 2   | f3.c
+ *
+ * Note that even if those files `#include` headers, those headers
+ * do not appear as rows.
+ */
+#keyset[id, num]
+compilation_compiling_files(
+    int id : @compilation ref,
+    int num : int ref,
+    int file : @file ref
+);
+
+/**
+ * The time taken by the extractor for a compiler invocation.
+ *
+ * For each file `num`, there will be rows for
+ *
+ * kind | seconds
+ * ---- | ---
+ * 1    | CPU seconds used by the extractor frontend
+ * 2    | Elapsed seconds during the extractor frontend
+ * 3    | CPU seconds used by the extractor backend
+ * 4    | Elapsed seconds during the extractor backend
+ */
+#keyset[id, num, kind]
+compilation_time(
+    int id : @compilation ref,
+    int num : int ref,
+    /* kind:
+       1 = frontend_cpu_seconds
+       2 = frontend_elapsed_seconds
+       3 = extractor_cpu_seconds
+       4 = extractor_elapsed_seconds
+    */
+    int kind : int ref,
+    float seconds : float ref
+);
+
+/**
+ * An error or warning generated by the extractor.
+ * The diagnostic message `diagnostic` was generated during compiler
+ * invocation `compilation`, and is the `file_number_diagnostic_number`th
+ * message generated while extracting the `file_number`th file of that
+ * invocation.
+ */
+#keyset[compilation, file_number, file_number_diagnostic_number]
+diagnostic_for(
+    int diagnostic : @diagnostic ref,
+    int compilation : @compilation ref,
+    int file_number : int ref,
+    int file_number_diagnostic_number : int ref
+);
+
+/**
+ * If extraction was successful, then `cpu_seconds` and
+ * `elapsed_seconds` are the CPU time and elapsed time (respectively)
+ * that extraction took for compiler invocation `id`.
+ */
+compilation_finished(
+    unique int id : @compilation ref,
+    float cpu_seconds : float ref,
+    float elapsed_seconds : float ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- C++ dbscheme -*/
+
+extractor_version(
+    string codeql_version: string ref,
+    string frontend_version: string ref
+)
+
+pch_uses(
+    int pch: @pch ref,
+    int compilation: @compilation ref,
+    int id: @file ref
+)
+
+#keyset[pch, compilation]
+pch_creations(
+    int pch: @pch,
+    int compilation: @compilation ref,
+    int from: @file ref
+)
+
+/** An element for which line-count information is available. */
+@sourceline = @file | @function | @variable | @enumconstant | @xmllocatable;
+
+fileannotations(
+    int id: @file ref,
+    int kind: int ref,
+    string name: string ref,
+    string value: string ref
+);
+
+inmacroexpansion(
+    int id: @element ref,
+    int inv: @macroinvocation ref
+);
+
+affectedbymacroexpansion(
+    int id: @element ref,
+    int inv: @macroinvocation ref
+);
+
+case @macroinvocation.kind of
+  1 = @macro_expansion
+| 2 = @other_macro_reference
+;
+
+macroinvocations(
+    unique int id: @macroinvocation,
+    int macro_id: @ppd_define ref,
+    int location: @location_default ref,
+    int kind: int ref
+);
+
+macroparent(
+    unique int id: @macroinvocation ref,
+    int parent_id: @macroinvocation ref
+);
+
+// a macroinvocation may be part of another location
+// the way to find a constant expression that uses a macro
+// is thus to find a constant expression that has a location
+// to which a macro invocation is bound
+macrolocationbind(
+    int id: @macroinvocation ref,
+    int location: @location_default ref
+);
+
+#keyset[invocation, argument_index]
+macro_argument_unexpanded(
+    int invocation: @macroinvocation ref,
+    int argument_index: int ref,
+    string text: string ref
+);
+
+#keyset[invocation, argument_index]
+macro_argument_expanded(
+    int invocation: @macroinvocation ref,
+    int argument_index: int ref,
+    string text: string ref
+);
+
+case @function.kind of
+  0 = @unknown_function
+| 1 = @normal_function
+| 2 = @constructor
+| 3 = @destructor
+| 4 = @conversion_function
+| 5 = @operator
+// ... 6 = @builtin_function deprecated    // GCC built-in functions, e.g. __builtin___memcpy_chk
+| 7 = @user_defined_literal
+| 8 = @deduction_guide
+;
+
+functions(
+    unique int id: @function,
+    string name: string ref,
+    int kind: int ref
+);
+
+builtin_functions(
+    int id: @function ref
+)
+
+function_entry_point(
+    int id: @function ref,
+    unique int entry_point: @stmt ref
+);
+
+function_return_type(
+    int id: @function ref,
+    int return_type: @type ref
+);
+
+/**
+ * If `function` is a coroutine, then this gives the `std::experimental::resumable_traits`
+ * instance associated with it, and the variables representing the `handle` and `promise`
+ * for it.
+ */
+coroutine(
+  unique int function: @function ref,
+  int traits: @type ref
+);
+
+/*
+case @coroutine_placeholder_variable.kind of
+  1 = @handle
+| 2 = @promise
+| 3 = @init_await_resume
+;
+*/
+
+coroutine_placeholder_variable(
+  unique int placeholder_variable: @variable ref,
+  int kind: int ref,
+  int function: @function ref
+)
+
+/** The `new` function used for allocating the coroutine state, if any. */
+coroutine_new(
+  unique int function: @function ref,
+  int new: @function ref
+);
+
+/** The `delete` function used for deallocating the coroutine state, if any. */
+coroutine_delete(
+  unique int function: @function ref,
+  int delete: @function ref
+);
+
+purefunctions(unique int id: @function ref);
+
+function_deleted(unique int id: @function ref);
+
+function_defaulted(unique int id: @function ref);
+
+function_prototyped(unique int id: @function ref)
+
+deduction_guide_for_class(
+    int id: @function ref,
+    int class_template: @usertype ref
+)
+
+member_function_this_type(
+    unique int id: @function ref,
+    int this_type: @type ref
+);
+
+#keyset[id, type_id]
+fun_decls(
+    int id: @fun_decl,
+    int function: @function ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+fun_def(unique int id: @fun_decl ref);
+fun_specialized(unique int id: @fun_decl ref);
+fun_implicit(unique int id: @fun_decl ref);
+fun_decl_specifiers(
+    int id: @fun_decl ref,
+    string name: string ref
+)
+#keyset[fun_decl, index]
+fun_decl_throws(
+    int fun_decl: @fun_decl ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+/* an empty throw specification is different from none */
+fun_decl_empty_throws(unique int fun_decl: @fun_decl ref);
+fun_decl_noexcept(
+    int fun_decl: @fun_decl ref,
+    int constant: @expr ref
+);
+fun_decl_empty_noexcept(int fun_decl: @fun_decl ref);
+fun_decl_typedef_type(
+    unique int fun_decl: @fun_decl ref,
+    int typedeftype_id: @usertype ref
+);
+
+/*
+case @fun_requires.kind of
+  1 = @template_attached
+| 2 = @function_attached
+;
+*/
+
+fun_requires(
+    int id: @fun_decl ref,
+    int kind: int ref,
+    int constraint: @expr ref
+);
+
+param_decl_bind(
+    unique int id: @var_decl ref,
+    int index: int ref,
+    int fun_decl: @fun_decl ref
+);
+
+#keyset[id, type_id]
+var_decls(
+    int id: @var_decl,
+    int variable: @variable ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+var_def(unique int id: @var_decl ref);
+var_specialized(int id: @var_decl ref);
+var_decl_specifiers(
+    int id: @var_decl ref,
+    string name: string ref
+)
+is_structured_binding(unique int id: @variable ref);
+var_requires(
+    int id: @var_decl ref,
+    int constraint: @expr ref
+);
+
+type_decls(
+    unique int id: @type_decl,
+    int type_id: @type ref,
+    int location: @location_default ref
+);
+type_def(unique int id: @type_decl ref);
+type_decl_top(
+    unique int type_decl: @type_decl ref
+);
+type_requires(
+    int id: @type_decl ref,
+    int constraint: @expr ref
+);
+
+namespace_decls(
+    unique int id: @namespace_decl,
+    int namespace_id: @namespace ref,
+    int location: @location_default ref,
+    int bodylocation: @location_default ref
+);
+
+case @using.kind of
+  1 = @using_declaration
+| 2 = @using_directive
+| 3 = @using_enum_declaration
+;
+
+usings(
+    unique int id: @using,
+    int element_id: @element ref,
+    int location: @location_default ref,
+    int kind: int ref
+);
+
+/** The element which contains the `using` declaration. */
+using_container(
+    int parent: @element ref,
+    int child: @using ref
+);
+
+static_asserts(
+    unique int id: @static_assert,
+    int condition : @expr ref,
+    string message : string ref,
+    int location: @location_default ref,
+    int enclosing : @element ref
+);
+
+// each function has an ordered list of parameters
+#keyset[id, type_id]
+#keyset[function, index, type_id]
+params(
+    int id: @parameter,
+    int function: @parameterized_element ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+
+overrides(
+    int new: @function ref,
+    int old: @function ref
+);
+
+#keyset[id, type_id]
+membervariables(
+    int id: @membervariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+#keyset[id, type_id]
+globalvariables(
+    int id: @globalvariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+#keyset[id, type_id]
+localvariables(
+    int id: @localvariable,
+    int type_id: @type ref,
+    string name: string ref
+);
+
+autoderivation(
+    unique int var: @variable ref,
+    int derivation_type: @type ref
+);
+
+orphaned_variables(
+    int var: @localvariable ref,
+    int function: @function ref
+)
+
+enumconstants(
+    unique int id: @enumconstant,
+    int parent: @usertype ref,
+    int index: int ref,
+    int type_id: @type ref,
+    string name: string ref,
+    int location: @location_default ref
+);
+
+@variable = @localscopevariable | @globalvariable | @membervariable;
+
+@localscopevariable = @localvariable | @parameter;
+
+/**
+ * Built-in types are the fundamental types, e.g., integral, floating, and void.
+ */
+case @builtintype.kind of
+   1 = @errortype
+|  2 = @unknowntype
+|  3 = @void
+|  4 = @boolean
+|  5 = @char
+|  6 = @unsigned_char
+|  7 = @signed_char
+|  8 = @short
+|  9 = @unsigned_short
+| 10 = @signed_short
+| 11 = @int
+| 12 = @unsigned_int
+| 13 = @signed_int
+| 14 = @long
+| 15 = @unsigned_long
+| 16 = @signed_long
+| 17 = @long_long
+| 18 = @unsigned_long_long
+| 19 = @signed_long_long
+// ... 20 Microsoft-specific __int8
+// ... 21 Microsoft-specific __int16
+// ... 22 Microsoft-specific __int32
+// ... 23 Microsoft-specific __int64
+| 24 = @float
+| 25 = @double
+| 26 = @long_double
+| 27 = @complex_float         // C99-specific _Complex float
+| 28 = @complex_double        // C99-specific _Complex double
+| 29 = @complex_long_double   // C99-specific _Complex long double
+| 30 = @imaginary_float       // C99-specific _Imaginary float
+| 31 = @imaginary_double      // C99-specific _Imaginary double
+| 32 = @imaginary_long_double // C99-specific _Imaginary long double
+| 33 = @wchar_t               // Microsoft-specific
+| 34 = @decltype_nullptr      // C++11
+| 35 = @int128                // __int128
+| 36 = @unsigned_int128       // unsigned __int128
+| 37 = @signed_int128         // signed __int128
+| 38 = @float128              // __float128
+| 39 = @complex_float128      // _Complex __float128
+// ... 40 _Decimal32
+// ... 41 _Decimal64
+// ... 42 _Decimal128
+| 43 = @char16_t
+| 44 = @char32_t
+| 45 = @std_float32           // _Float32
+| 46 = @float32x              // _Float32x
+| 47 = @std_float64           // _Float64
+| 48 = @float64x              // _Float64x
+| 49 = @std_float128          // _Float128
+// ... 50 _Float128x
+| 51 = @char8_t
+| 52 = @float16               // _Float16
+| 53 = @complex_float16       // _Complex _Float16
+| 54 = @fp16                  // __fp16
+| 55 = @std_bfloat16          // __bf16
+| 56 = @std_float16           // std::float16_t
+| 57 = @complex_std_float32   // _Complex _Float32
+| 58 = @complex_float32x      // _Complex _Float32x
+| 59 = @complex_std_float64   // _Complex _Float64
+| 60 = @complex_float64x      // _Complex _Float64x
+| 61 = @complex_std_float128  // _Complex _Float128
+| 62 = @mfp8                  // __mfp8
+| 63 = @scalable_vector_count // __SVCount_t
+| 64 = @complex_fp16          // _Complex __fp16
+| 65 = @complex_std_bfloat16  // _Complex __bf16
+| 66 = @complex_std_float16   // _Complex std::float16_t
+;
+
+builtintypes(
+    unique int id: @builtintype,
+    string name: string ref,
+    int kind: int ref,
+    int size: int ref,
+    int sign: int ref,
+    int alignment: int ref
+);
+
+/**
+ * Derived types are types that are directly derived from existing types and
+ * point to, refer to, transform type data to return a new type.
+ */
+case @derivedtype.kind of
+   1 = @pointer
+|  2 = @reference
+|  3 = @type_with_specifiers
+|  4 = @array
+|  5 = @gnu_vector
+|  6 = @routineptr
+|  7 = @routinereference
+|  8 = @rvalue_reference // C++11
+// ... 9 type_conforming_to_protocols deprecated
+| 10 = @block
+| 11 = @scalable_vector // Arm SVE
+;
+
+derivedtypes(
+    unique int id: @derivedtype,
+    string name: string ref,
+    int kind: int ref,
+    int type_id: @type ref
+);
+
+pointerishsize(unique int id: @derivedtype ref,
+    int size: int ref,
+    int alignment: int ref);
+
+arraysizes(
+    unique int id: @derivedtype ref,
+    int num_elements: int ref,
+    int bytesize: int ref,
+    int alignment: int ref
+);
+
+tupleelements(
+    unique int id: @derivedtype ref,
+    int num_elements: int ref
+);
+
+typedefbase(
+    unique int id: @usertype ref,
+    int type_id: @type ref
+);
+
+/**
+ * An instance of the C++11 `decltype` operator or C23 `typeof`/`typeof_unqual`
+ * operator taking an expression as its argument.  For example:
+ * ```
+ * int a;
+ * decltype(1+a) b;
+ * typeof(1+a) c;
+ * ```
+ * Here `expr` is `1+a`.
+ *
+ * Sometimes an additional pair of parentheses around the expression
+ * changes the semantics of the decltype, e.g.
+ * ```
+ * struct A { double x; };
+ * const A* a = new A();
+ * decltype( a->x ); // type is double
+ * decltype((a->x)); // type is const double&
+ * ```
+ * (Please consult the C++11 standard for more details).
+ * `parentheses_would_change_meaning` is `true` iff that is the case.
+ */
+
+/*
+case @decltype.kind of
+|  0 = @decltype
+|  1 = @typeof // The frontend does not differentiate between typeof and typeof_unqual
+;
+*/
+
+#keyset[id, expr]
+decltypes(
+    int id: @decltype,
+    int expr: @expr ref,
+    int kind: int ref,
+    int base_type: @type ref,
+    boolean parentheses_would_change_meaning: boolean ref
+);
+
+case @type_operator.kind of
+   0 = @typeof // The frontend does not differentiate between typeof and typeof_unqual
+|  1 = @underlying_type
+|  2 = @bases
+|  3 = @direct_bases
+|  4 = @add_lvalue_reference
+|  5 = @add_pointer
+|  6 = @add_rvalue_reference
+|  7 = @decay
+|  8 = @make_signed
+|  9 = @make_unsigned
+| 10 = @remove_all_extents
+| 11 = @remove_const
+| 12 = @remove_cv
+| 13 = @remove_cvref
+| 14 = @remove_extent
+| 15 = @remove_pointer
+| 16 = @remove_reference_t
+| 17 = @remove_restrict
+| 18 = @remove_volatile
+| 19 = @remove_reference
+;
+
+type_operators(
+    unique int id: @type_operator,
+    int arg_type: @type ref,
+    int kind: int ref,
+    int base_type: @type ref
+)
+
+case @usertype.kind of
+   0 = @unknown_usertype
+|  1 = @struct
+|  2 = @class
+|  3 = @union
+|  4 = @enum
+// ... 5 = @typedef deprecated        // classic C: typedef typedef type name
+// ... 6 = @template deprecated
+|  7 = @template_parameter
+|  8 = @template_template_parameter
+|  9 = @proxy_class                   // a proxy class associated with a template parameter
+// ... 10 objc_class deprecated
+// ... 11 objc_protocol deprecated
+// ... 12 objc_category deprecated
+| 13 = @scoped_enum
+// ... 14 = @using_alias deprecated   // a using name = type style typedef
+| 15 = @template_struct
+| 16 = @template_class
+| 17 = @template_union
+| 18 = @alias
+;
+
+usertypes(
+    unique int id: @usertype,
+    string name: string ref,
+    int kind: int ref
+);
+
+usertypesize(
+    unique int id: @usertype ref,
+    int size: int ref,
+    int alignment: int ref
+);
+
+usertype_final(unique int id: @usertype ref);
+
+usertype_uuid(
+    unique int id: @usertype ref,
+    string uuid: string ref
+);
+
+/*
+case @usertype.alias_kind of
+| 0 = @typedef
+| 1 = @alias
+*/
+
+usertype_alias_kind(
+    int id: @usertype ref,
+    int alias_kind: int ref
+)
+
+nontype_template_parameters(
+    int id: @expr ref
+);
+
+type_template_type_constraint(
+    int id: @usertype ref,
+    int constraint: @expr ref
+);
+
+mangled_name(
+    unique int id: @declaration ref,
+    int mangled_name : @mangledname,
+    boolean is_complete: boolean ref
+);
+
+is_pod_class(unique int id: @usertype ref);
+is_standard_layout_class(unique int id: @usertype ref);
+
+is_complete(unique int id: @usertype ref);
+
+is_class_template(unique int id: @usertype ref);
+class_instantiation(
+    int to: @usertype ref,
+    int from: @usertype ref
+);
+class_template_argument(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+class_template_argument_value(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+@user_or_decltype = @usertype | @decltype;
+
+is_proxy_class_for(
+    unique int id: @usertype ref,
+    int templ_param_id: @user_or_decltype ref
+);
+
+type_mentions(
+    unique int id: @type_mention,
+    int type_id: @type ref,
+    int location: @location_default ref,
+    // a_symbol_reference_kind from the frontend.
+    int kind: int ref
+);
+
+is_function_template(unique int id: @function ref);
+function_instantiation(
+    unique int to: @function ref,
+    int from: @function ref
+);
+function_template_argument(
+    int function_id: @function ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+function_template_argument_value(
+    int function_id: @function ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+is_variable_template(unique int id: @variable ref);
+variable_instantiation(
+    unique int to: @variable ref,
+    int from: @variable ref
+);
+variable_template_argument(
+    int variable_id: @variable ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+variable_template_argument_value(
+    int variable_id: @variable ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+template_template_instantiation(
+    int to: @usertype ref,
+    int from: @usertype ref
+);
+template_template_argument(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+template_template_argument_value(
+    int type_id: @usertype ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+@concept = @concept_template | @concept_id;
+
+concept_templates(
+    unique int concept_id: @concept_template,
+    string name: string ref,
+    int location: @location_default ref
+);
+concept_instantiation(
+    unique int to: @concept_id ref,
+    int from: @concept_template ref
+);
+is_type_constraint(int concept_id: @concept_id ref);
+concept_template_argument(
+    int concept_id: @concept ref,
+    int index: int ref,
+    int arg_type: @type ref
+);
+concept_template_argument_value(
+    int concept_id: @concept ref,
+    int index: int ref,
+    int arg_value: @expr ref
+);
+
+routinetypes(
+    unique int id: @routinetype,
+    int return_type: @type ref
+);
+
+routinetypeargs(
+    int routine: @routinetype ref,
+    int index: int ref,
+    int type_id: @type ref
+);
+
+ptrtomembers(
+    unique int id: @ptrtomember,
+    int type_id: @type ref,
+    int class_id: @type ref
+);
+
+/*
+ specifiers for types, functions, and variables
+
+    "public",
+    "protected",
+    "private",
+
+    "const",
+    "volatile",
+    "static",
+
+    "pure",
+    "virtual",
+    "sealed", // Microsoft
+    "__interface", // Microsoft
+    "inline",
+    "explicit",
+
+    "near", // near far extension
+    "far", // near far extension
+    "__ptr32", // Microsoft
+    "__ptr64", // Microsoft
+    "__sptr", // Microsoft
+    "__uptr", // Microsoft
+    "dllimport", // Microsoft
+    "dllexport", // Microsoft
+    "thread", // Microsoft
+    "naked", // Microsoft
+    "microsoft_inline", // Microsoft
+    "forceinline", // Microsoft
+    "selectany", // Microsoft
+    "nothrow", // Microsoft
+    "novtable", // Microsoft
+    "noreturn", // Microsoft
+    "noinline", // Microsoft
+    "noalias", // Microsoft
+    "restrict", // Microsoft
+*/
+
+specifiers(
+    unique int id: @specifier,
+    unique string str: string ref
+);
+
+typespecifiers(
+    int type_id: @type ref,
+    int spec_id: @specifier ref
+);
+
+funspecifiers(
+    int func_id: @function ref,
+    int spec_id: @specifier ref
+);
+
+varspecifiers(
+    int var_id: @accessible ref,
+    int spec_id: @specifier ref
+);
+
+explicit_specifier_exprs(
+    unique int func_id: @function ref,
+    int constant: @expr ref
+)
+
+attributes(
+    unique int id: @attribute,
+    int kind: int ref,
+    string name: string ref,
+    string name_space: string ref,
+    int location: @location_default ref
+);
+
+case @attribute.kind of
+  0 = @gnuattribute
+| 1 = @stdattribute
+| 2 = @declspec
+| 3 = @msattribute
+| 4 = @alignas
+// ... 5 @objc_propertyattribute deprecated
+;
+
+attribute_args(
+    unique int id: @attribute_arg,
+    int kind: int ref,
+    int attribute: @attribute ref,
+    int index: int ref,
+    int location: @location_default ref
+);
+
+case @attribute_arg.kind of
+  0 = @attribute_arg_empty
+| 1 = @attribute_arg_token
+| 2 = @attribute_arg_constant
+| 3 = @attribute_arg_type
+| 4 = @attribute_arg_constant_expr
+| 5 = @attribute_arg_expr
+;
+
+attribute_arg_value(
+    unique int arg: @attribute_arg ref,
+    string value: string ref
+);
+attribute_arg_type(
+    unique int arg: @attribute_arg ref,
+    int type_id: @type ref
+);
+attribute_arg_constant(
+    unique int arg: @attribute_arg ref,
+    int constant: @expr ref
+)
+attribute_arg_expr(
+    unique int arg: @attribute_arg ref,
+    int expr: @expr ref
+)
+attribute_arg_name(
+    unique int arg: @attribute_arg ref,
+    string name: string ref
+);
+
+typeattributes(
+    int type_id: @type ref,
+    int spec_id: @attribute ref
+);
+
+funcattributes(
+    int func_id: @function ref,
+    int spec_id: @attribute ref
+);
+
+varattributes(
+    int var_id: @accessible ref,
+    int spec_id: @attribute ref
+);
+
+namespaceattributes(
+    int namespace_id: @namespace ref,
+    int spec_id: @attribute ref
+);
+
+stmtattributes(
+    int stmt_id: @stmt ref,
+    int spec_id: @attribute ref
+);
+
+@type = @builtintype
+      | @derivedtype
+      | @usertype
+      | @routinetype
+      | @ptrtomember
+      | @decltype
+      | @type_operator;
+
+unspecifiedtype(
+    unique int type_id: @type ref,
+    int unspecified_type_id: @type ref
+);
+
+member(
+    int parent: @type ref,
+    int index: int ref,
+    int child: @member ref
+);
+
+@enclosingfunction_child = @usertype | @variable | @namespace
+
+enclosingfunction(
+    unique int child: @enclosingfunction_child ref,
+    int parent: @function ref
+);
+
+derivations(
+    unique int derivation: @derivation,
+    int sub: @type ref,
+    int index: int ref,
+    int super: @type ref,
+    int location: @location_default ref
+);
+
+derspecifiers(
+    int der_id: @derivation ref,
+    int spec_id: @specifier ref
+);
+
+/**
+ * Contains the byte offset of the base class subobject within the derived
+ * class. Only holds for non-virtual base classes, but see table
+ * `virtual_base_offsets` for offsets of virtual base class subobjects.
+ */
+direct_base_offsets(
+    unique int der_id: @derivation ref,
+    int offset: int ref
+);
+
+/**
+ * Contains the byte offset of the virtual base class subobject for class
+ * `super` within a most-derived object of class `sub`. `super` can be either a
+ * direct or indirect base class.
+ */
+#keyset[sub, super]
+virtual_base_offsets(
+    int sub: @usertype ref,
+    int super: @usertype ref,
+    int offset: int ref
+);
+
+frienddecls(
+    unique int id: @frienddecl,
+    int type_id: @type ref,
+    int decl_id: @declaration ref,
+    int location: @location_default ref
+);
+
+@declaredtype = @usertype ;
+
+@declaration = @function
+             | @declaredtype
+             | @variable
+             | @enumconstant
+             | @frienddecl
+             | @concept_template;
+
+@member = @membervariable
+        | @function
+        | @declaredtype
+        | @enumconstant;
+
+@locatable = @diagnostic
+           | @declaration
+           | @ppd_include
+           | @ppd_define
+           | @macroinvocation
+           /*| @funcall*/
+           | @xmllocatable
+           | @attribute
+           | @attribute_arg;
+
+@namedscope = @namespace | @usertype;
+
+@element = @locatable
+         | @file
+         | @folder
+         | @specifier
+         | @type
+         | @expr
+         | @namespace
+         | @initialiser
+         | @stmt
+         | @derivation
+         | @comment
+         | @preprocdirect
+         | @fun_decl
+         | @var_decl
+         | @type_decl
+         | @namespace_decl
+         | @using
+         | @namequalifier
+         | @specialnamequalifyingelement
+         | @static_assert
+         | @type_mention
+         | @lambdacapture;
+
+@exprparent = @element;
+
+comments(
+    unique int id: @comment,
+    string contents: string ref,
+    int location: @location_default ref
+);
+
+commentbinding(
+    int id: @comment ref,
+    int element: @element ref
+);
+
+exprconv(
+    int converted: @expr ref,
+    unique int conversion: @expr ref
+);
+
+compgenerated(unique int id: @element ref);
+
+/**
+ * `destructor_call` destructs the `i`'th entity that should be
+ * destructed following `element`. Note that entities should be
+ * destructed in reverse construction order, so for a given `element`
+ * these should be called from highest to lowest `i`.
+ */
+#keyset[element, destructor_call]
+#keyset[element, i]
+synthetic_destructor_call(
+    int element: @element ref,
+    int i: int ref,
+    int destructor_call: @routineexpr ref
+);
+
+namespaces(
+    unique int id: @namespace,
+    string name: string ref
+);
+
+namespace_inline(
+    unique int id: @namespace ref
+);
+
+namespacembrs(
+    int parentid: @namespace ref,
+    unique int memberid: @namespacembr ref
+);
+
+@namespacembr = @declaration | @namespace;
+
+exprparents(
+    int expr_id: @expr ref,
+    int child_index: int ref,
+    int parent_id: @exprparent ref
+);
+
+expr_isload(unique int expr_id: @expr ref);
+
+@cast = @c_style_cast
+      | @const_cast
+      | @dynamic_cast
+      | @reinterpret_cast
+      | @static_cast
+      ;
+
+/*
+case @conversion.kind of
+  0 = @simple_conversion           // a numeric conversion, qualification conversion, or a reinterpret_cast
+| 1 = @bool_conversion             // conversion to 'bool'
+| 2 = @base_class_conversion       // a derived-to-base conversion
+| 3 = @derived_class_conversion    // a base-to-derived conversion
+| 4 = @pm_base_class_conversion    // a derived-to-base conversion of a pointer to member
+| 5 = @pm_derived_class_conversion // a base-to-derived conversion of a pointer to member
+| 6 = @glvalue_adjust              // an adjustment of the type of a glvalue
+| 7 = @prvalue_adjust              // an adjustment of the type of a prvalue
+;
+*/
+/**
+ * Describes the semantics represented by a cast expression. This is largely
+ * independent of the source syntax of the cast, so it is separate from the
+ * regular expression kind.
+ */
+conversionkinds(
+    unique int expr_id: @cast ref,
+    int kind: int ref
+);
+
+@conversion = @cast
+            | @array_to_pointer
+            | @parexpr
+            | @reference_to
+            | @ref_indirect
+            | @temp_init
+            | @c11_generic
+            ;
+
+/*
+case @funbindexpr.kind of
+  0 = @normal_call  // a normal call
+| 1 = @virtual_call // a virtual call
+| 2 = @adl_call     // a call whose target is only found by ADL
+;
+*/
+iscall(
+    unique int caller: @funbindexpr ref,
+    int kind: int ref
+);
+
+numtemplatearguments(
+    unique int expr_id: @expr ref,
+    int num: int ref
+);
+
+specialnamequalifyingelements(
+    unique int id: @specialnamequalifyingelement,
+    unique string name: string ref
+);
+
+@namequalifiableelement = @expr | @namequalifier;
+@namequalifyingelement = @namespace
+                       | @specialnamequalifyingelement
+                       | @usertype
+                       | @decltype;
+
+namequalifiers(
+    unique int id: @namequalifier,
+    unique int qualifiableelement: @namequalifiableelement ref,
+    int qualifyingelement: @namequalifyingelement ref,
+    int location: @location_default ref
+);
+
+varbind(
+    int expr: @varbindexpr ref,
+    int var: @accessible ref
+);
+
+funbind(
+    int expr: @funbindexpr ref,
+    int fun: @function ref
+);
+
+@any_new_expr = @new_expr
+              | @new_array_expr;
+
+@new_or_delete_expr = @any_new_expr
+                    | @delete_expr
+                    | @delete_array_expr;
+
+@prefix_crement_expr = @preincrexpr | @predecrexpr;
+
+@postfix_crement_expr = @postincrexpr | @postdecrexpr;
+
+@increment_expr = @preincrexpr | @postincrexpr;
+
+@decrement_expr = @predecrexpr | @postdecrexpr;
+
+@crement_expr = @increment_expr | @decrement_expr;
+
+@un_arith_op_expr = @arithnegexpr
+                  | @unaryplusexpr
+                  | @conjugation
+                  | @realpartexpr
+                  | @imagpartexpr
+                  | @crement_expr
+                  ;
+
+@un_bitwise_op_expr = @complementexpr;
+
+@un_log_op_expr = @notexpr;
+
+@un_op_expr = @address_of
+            | @indirect
+            | @un_arith_op_expr
+            | @un_bitwise_op_expr
+            | @builtinaddressof
+            | @vec_fill
+            | @un_log_op_expr
+            | @co_await
+            | @co_yield
+            ;
+
+@bin_log_op_expr = @andlogicalexpr | @orlogicalexpr;
+
+@cmp_op_expr = @eq_op_expr | @rel_op_expr;
+
+@eq_op_expr = @eqexpr | @neexpr;
+
+@rel_op_expr = @gtexpr
+             | @ltexpr
+             | @geexpr
+             | @leexpr
+             | @spaceshipexpr
+             ;
+
+@bin_bitwise_op_expr = @lshiftexpr
+                     | @rshiftexpr
+                     | @andexpr
+                     | @orexpr
+                     | @xorexpr
+                     ;
+
+@p_arith_op_expr = @paddexpr
+                 | @psubexpr
+                 | @pdiffexpr
+                 ;
+
+@bin_arith_op_expr = @addexpr
+                   | @subexpr
+                   | @mulexpr
+                   | @divexpr
+                   | @remexpr
+                   | @jmulexpr
+                   | @jdivexpr
+                   | @fjaddexpr
+                   | @jfaddexpr
+                   | @fjsubexpr
+                   | @jfsubexpr
+                   | @minexpr
+                   | @maxexpr
+                   | @p_arith_op_expr
+                   ;
+
+@bin_op_expr = @bin_arith_op_expr
+             | @bin_bitwise_op_expr
+             | @cmp_op_expr
+             | @bin_log_op_expr
+             ;
+
+@op_expr = @un_op_expr
+         | @bin_op_expr
+         | @assign_expr
+         | @conditionalexpr
+         ;
+
+@assign_arith_expr = @assignaddexpr
+                   | @assignsubexpr
+                   | @assignmulexpr
+                   | @assigndivexpr
+                   | @assignremexpr
+                   ;
+
+@assign_bitwise_expr = @assignandexpr
+                     | @assignorexpr
+                     | @assignxorexpr
+                     | @assignlshiftexpr
+                     | @assignrshiftexpr
+                     ;
+
+@assign_pointer_expr = @assignpaddexpr
+                     | @assignpsubexpr
+                     ;
+
+@assign_op_expr = @assign_arith_expr
+                | @assign_bitwise_expr
+                | @assign_pointer_expr
+                ;
+
+@assign_expr = @assignexpr | @assign_op_expr | @blockassignexpr
+
+/*
+  Binary encoding of the allocator form.
+
+  case @allocator.form of
+    0 = plain
+  | 1 = alignment
+  ;
+*/
+
+/**
+ * The allocator function associated with a `new` or `new[]` expression.
+ * The `form` column specified whether the allocation call contains an alignment
+ * argument.
+ */
+expr_allocator(
+    unique int expr: @any_new_expr ref,
+    int func: @function ref,
+    int form: int ref
+);
+
+/*
+  Binary encoding of the deallocator form.
+
+  case @deallocator.form of
+    0 = plain
+  | 1 = size
+  | 2 = alignment
+  | 4 = destroying_delete
+  ;
+*/
+
+/**
+ * The deallocator function associated with a `delete`, `delete[]`, `new`, or
+ * `new[]` expression. For a `new` or `new[]` expression, the deallocator is the
+ * one used to free memory if the initialization throws an exception.
+ * The `form` column specifies whether the deallocation call contains a size
+ * argument, and alignment argument, or both.
+ */
+expr_deallocator(
+    unique int expr: @new_or_delete_expr ref,
+    int func: @function ref,
+    int form: int ref
+);
+
+/**
+ * Holds if the `@conditionalexpr` is of the two operand form
+ * `guard ? : false`.
+ */
+expr_cond_two_operand(
+    unique int cond: @conditionalexpr ref
+);
+
+/**
+ * The guard of `@conditionalexpr` `guard ? true : false`
+ */
+expr_cond_guard(
+    unique int cond: @conditionalexpr ref,
+    int guard: @expr ref
+);
+
+/**
+ * The expression used when the guard of `@conditionalexpr`
+ * `guard ? true : false` holds. For the two operand form
+ * `guard ?: false` consider using `expr_cond_guard` instead.
+ */
+expr_cond_true(
+    unique int cond: @conditionalexpr ref,
+    int true: @expr ref
+);
+
+/**
+ * The expression used when the guard of `@conditionalexpr`
+ * `guard ? true : false` does not hold.
+ */
+expr_cond_false(
+    unique int cond: @conditionalexpr ref,
+    int false: @expr ref
+);
+
+/** A string representation of the value. */
+values(
+    unique int id: @value,
+    string str: string ref
+);
+
+/** The actual text in the source code for the value, if any. */
+valuetext(
+    unique int id: @value ref,
+    string text: string ref
+);
+
+valuebind(
+    int val: @value ref,
+    unique int expr: @expr ref
+);
+
+fieldoffsets(
+    unique int id: @variable ref,
+    int byteoffset: int ref,
+    int bitoffset: int ref
+);
+
+bitfield(
+    unique int id: @variable ref,
+    int bits: int ref,
+    int declared_bits: int ref
+);
+
+/* TODO
+memberprefix(
+    int member: @expr ref,
+    int prefix: @expr ref
+);
+*/
+
+/*
+   kind(1) = mbrcallexpr
+   kind(2) = mbrptrcallexpr
+   kind(3) = mbrptrmbrcallexpr
+   kind(4) = ptrmbrptrmbrcallexpr
+   kind(5) = mbrreadexpr // x.y
+   kind(6) = mbrptrreadexpr // p->y
+   kind(7) = mbrptrmbrreadexpr // x.*pm
+   kind(8) = mbrptrmbrptrreadexpr // x->*pm
+   kind(9) = staticmbrreadexpr // static x.y
+   kind(10) = staticmbrptrreadexpr // static p->y
+*/
+/* TODO
+memberaccess(
+    int member: @expr ref,
+    int kind: int ref
+);
+*/
+
+initialisers(
+    unique int init: @initialiser,
+    int var: @accessible ref,
+    unique int expr: @expr ref,
+    int location: @location_default ref
+);
+
+braced_initialisers(
+    int init: @initialiser ref
+);
+
+/**
+ * An ancestor for the expression, for cases in which we cannot
+ * otherwise find the expression's parent.
+ */
+expr_ancestor(
+    int exp: @expr ref,
+    int ancestor: @element ref
+);
+
+exprs(
+    unique int id: @expr,
+    int kind: int ref,
+    int location: @location_default ref
+);
+
+expr_reuse(
+    int reuse: @expr ref,
+    int original: @expr ref,
+    int value_category: int ref
+)
+
+/*
+  case @value.category of
+    1 = prval
+  | 2 = xval
+  | 3 = lval
+  ;
+*/
+expr_types(
+    int id: @expr ref,
+    int typeid: @type ref,
+    int value_category: int ref
+);
+
+case @expr.kind of
+    1 = @errorexpr
+|   2 = @address_of // & AddressOfExpr
+|   3 = @reference_to // ReferenceToExpr (implicit?)
+|   4 = @indirect // * PointerDereferenceExpr
+|   5 = @ref_indirect // ReferenceDereferenceExpr (implicit?)
+// ...
+|   8 = @array_to_pointer // (???)
+|   9 = @vacuous_destructor_call // VacuousDestructorCall
+// ...
+|  11 = @assume // Microsoft
+|  12 = @parexpr
+|  13 = @arithnegexpr
+|  14 = @unaryplusexpr
+|  15 = @complementexpr
+|  16 = @notexpr
+|  17 = @conjugation // GNU ~ operator
+|  18 = @realpartexpr // GNU __real
+|  19 = @imagpartexpr // GNU __imag
+|  20 = @postincrexpr
+|  21 = @postdecrexpr
+|  22 = @preincrexpr
+|  23 = @predecrexpr
+|  24 = @conditionalexpr
+|  25 = @addexpr
+|  26 = @subexpr
+|  27 = @mulexpr
+|  28 = @divexpr
+|  29 = @remexpr
+|  30 = @jmulexpr // C99 mul imaginary
+|  31 = @jdivexpr // C99 div imaginary
+|  32 = @fjaddexpr // C99 add real + imaginary
+|  33 = @jfaddexpr // C99 add imaginary + real
+|  34 = @fjsubexpr // C99 sub real - imaginary
+|  35 = @jfsubexpr // C99 sub imaginary - real
+|  36 = @paddexpr // pointer add (pointer + int or int + pointer)
+|  37 = @psubexpr // pointer sub (pointer - integer)
+|  38 = @pdiffexpr // difference between two pointers
+|  39 = @lshiftexpr
+|  40 = @rshiftexpr
+|  41 = @andexpr
+|  42 = @orexpr
+|  43 = @xorexpr
+|  44 = @eqexpr
+|  45 = @neexpr
+|  46 = @gtexpr
+|  47 = @ltexpr
+|  48 = @geexpr
+|  49 = @leexpr
+|  50 = @minexpr // GNU minimum
+|  51 = @maxexpr // GNU maximum
+|  52 = @assignexpr
+|  53 = @assignaddexpr
+|  54 = @assignsubexpr
+|  55 = @assignmulexpr
+|  56 = @assigndivexpr
+|  57 = @assignremexpr
+|  58 = @assignlshiftexpr
+|  59 = @assignrshiftexpr
+|  60 = @assignandexpr
+|  61 = @assignorexpr
+|  62 = @assignxorexpr
+|  63 = @assignpaddexpr // assign pointer add
+|  64 = @assignpsubexpr // assign pointer sub
+|  65 = @andlogicalexpr
+|  66 = @orlogicalexpr
+|  67 = @commaexpr
+|  68 = @subscriptexpr // access to member of an array, e.g., a[5]
+// ...  69 @objc_subscriptexpr deprecated
+// ...  70 @cmdaccess deprecated
+// ...
+|  73 = @virtfunptrexpr
+|  74 = @callexpr
+// ...  75 @msgexpr_normal deprecated
+// ...  76 @msgexpr_super deprecated
+// ...  77 @atselectorexpr deprecated
+// ...  78 @atprotocolexpr deprecated
+|  79 = @vastartexpr
+|  80 = @vaargexpr
+|  81 = @vaendexpr
+|  82 = @vacopyexpr
+// ...  83 @atencodeexpr deprecated
+|  84 = @varaccess
+|  85 = @thisaccess
+// ...  86 @objc_box_expr deprecated
+|  87 = @new_expr
+|  88 = @delete_expr
+|  89 = @throw_expr
+|  90 = @condition_decl // a variable declared in a condition, e.g., if(int x = y > 2)
+|  91 = @braced_init_list
+|  92 = @type_id
+|  93 = @runtime_sizeof
+|  94 = @runtime_alignof
+|  95 = @sizeof_pack
+|  96 = @expr_stmt // GNU extension
+|  97 = @routineexpr
+|  98 = @type_operand // used to access a type in certain contexts (haven't found any examples yet....)
+|  99 = @offsetofexpr // offsetof ::= type and field
+| 100 = @hasassignexpr // __has_assign ::= type
+| 101 = @hascopyexpr // __has_copy ::= type
+| 102 = @hasnothrowassign // __has_nothrow_assign ::= type
+| 103 = @hasnothrowconstr // __has_nothrow_constructor ::= type
+| 104 = @hasnothrowcopy // __has_nothrow_copy ::= type
+| 105 = @hastrivialassign // __has_trivial_assign ::= type
+| 106 = @hastrivialconstr // __has_trivial_constructor ::= type
+| 107 = @hastrivialcopy // __has_trivial_copy ::= type
+| 108 = @hasuserdestr // __has_user_destructor ::= type
+| 109 = @hasvirtualdestr // __has_virtual_destructor ::= type
+| 110 = @isabstractexpr // __is_abstract ::= type
+| 111 = @isbaseofexpr // __is_base_of ::= type type
+| 112 = @isclassexpr // __is_class ::= type
+| 113 = @isconvtoexpr // __is_convertible_to ::= type type
+| 114 = @isemptyexpr // __is_empty ::= type
+| 115 = @isenumexpr // __is_enum ::= type
+| 116 = @ispodexpr // __is_pod ::= type
+| 117 = @ispolyexpr // __is_polymorphic ::= type
+| 118 = @isunionexpr // __is_union ::= type
+| 119 = @typescompexpr // GNU __builtin_types_compatible ::= type type
+| 120 = @intaddrexpr // frontend internal builtin, used to implement offsetof
+// ...
+| 122 = @hastrivialdestructor // __has_trivial_destructor ::= type
+| 123 = @literal
+| 124 = @uuidof
+| 127 = @aggregateliteral
+| 128 = @delete_array_expr
+| 129 = @new_array_expr
+// ... 130 @objc_array_literal deprecated
+// ... 131 @objc_dictionary_literal deprecated
+| 132 = @foldexpr
+// ...
+| 200 = @ctordirectinit
+| 201 = @ctorvirtualinit
+| 202 = @ctorfieldinit
+| 203 = @ctordelegatinginit
+| 204 = @dtordirectdestruct
+| 205 = @dtorvirtualdestruct
+| 206 = @dtorfielddestruct
+// ...
+| 210 = @static_cast
+| 211 = @reinterpret_cast
+| 212 = @const_cast
+| 213 = @dynamic_cast
+| 214 = @c_style_cast
+| 215 = @lambdaexpr
+| 216 = @param_ref
+| 217 = @noopexpr
+// ...
+| 294 = @istriviallyconstructibleexpr
+| 295 = @isdestructibleexpr
+| 296 = @isnothrowdestructibleexpr
+| 297 = @istriviallydestructibleexpr
+| 298 = @istriviallyassignableexpr
+| 299 = @isnothrowassignableexpr
+| 300 = @istrivialexpr
+| 301 = @isstandardlayoutexpr
+| 302 = @istriviallycopyableexpr
+| 303 = @isliteraltypeexpr
+| 304 = @hastrivialmoveconstructorexpr
+| 305 = @hastrivialmoveassignexpr
+| 306 = @hasnothrowmoveassignexpr
+| 307 = @isconstructibleexpr
+| 308 = @isnothrowconstructibleexpr
+| 309 = @hasfinalizerexpr
+| 310 = @isdelegateexpr
+| 311 = @isinterfaceclassexpr
+| 312 = @isrefarrayexpr
+| 313 = @isrefclassexpr
+| 314 = @issealedexpr
+| 315 = @issimplevalueclassexpr
+| 316 = @isvalueclassexpr
+| 317 = @isfinalexpr
+| 319 = @noexceptexpr
+| 320 = @builtinshufflevector
+| 321 = @builtinchooseexpr
+| 322 = @builtinaddressof
+| 323 = @vec_fill
+| 324 = @builtinconvertvector
+| 325 = @builtincomplex
+| 326 = @spaceshipexpr
+| 327 = @co_await
+| 328 = @co_yield
+| 329 = @temp_init
+| 330 = @isassignable
+| 331 = @isaggregate
+| 332 = @hasuniqueobjectrepresentations
+| 333 = @builtinbitcast
+| 334 = @builtinshuffle
+| 335 = @blockassignexpr
+| 336 = @issame
+| 337 = @isfunction
+| 338 = @islayoutcompatible
+| 339 = @ispointerinterconvertiblebaseof
+| 340 = @isarray
+| 341 = @arrayrank
+| 342 = @arrayextent
+| 343 = @isarithmetic
+| 344 = @iscompletetype
+| 345 = @iscompound
+| 346 = @isconst
+| 347 = @isfloatingpoint
+| 348 = @isfundamental
+| 349 = @isintegral
+| 350 = @islvaluereference
+| 351 = @ismemberfunctionpointer
+| 352 = @ismemberobjectpointer
+| 353 = @ismemberpointer
+| 354 = @isobject
+| 355 = @ispointer
+| 356 = @isreference
+| 357 = @isrvaluereference
+| 358 = @isscalar
+| 359 = @issigned
+| 360 = @isunsigned
+| 361 = @isvoid
+| 362 = @isvolatile
+| 363 = @reuseexpr
+| 364 = @istriviallycopyassignable
+| 365 = @isassignablenopreconditioncheck
+| 366 = @referencebindstotemporary
+| 367 = @issameas
+| 368 = @builtinhasattribute
+| 369 = @ispointerinterconvertiblewithclass
+| 370 = @builtinispointerinterconvertiblewithclass
+| 371 = @iscorrespondingmember
+| 372 = @builtiniscorrespondingmember
+| 373 = @isboundedarray
+| 374 = @isunboundedarray
+| 375 = @isreferenceable
+| 378 = @isnothrowconvertible
+| 379 = @referenceconstructsfromtemporary
+| 380 = @referenceconvertsfromtemporary
+| 381 = @isconvertible
+| 382 = @isvalidwinrttype
+| 383 = @iswinclass
+| 384 = @iswininterface
+| 385 = @istriviallyequalitycomparable
+| 386 = @isscopedenum
+| 387 = @istriviallyrelocatable
+| 388 = @datasizeof
+| 389 = @c11_generic
+| 390 = @requires_expr
+| 391 = @nested_requirement
+| 392 = @compound_requirement
+| 393 = @concept_id
+;
+
+@var_args_expr = @vastartexpr
+               | @vaendexpr
+               | @vaargexpr
+               | @vacopyexpr
+               ;
+
+@builtin_op = @var_args_expr
+            | @noopexpr
+            | @offsetofexpr
+            | @intaddrexpr
+            | @hasassignexpr
+            | @hascopyexpr
+            | @hasnothrowassign
+            | @hasnothrowconstr
+            | @hasnothrowcopy
+            | @hastrivialassign
+            | @hastrivialconstr
+            | @hastrivialcopy
+            | @hastrivialdestructor
+            | @hasuserdestr
+            | @hasvirtualdestr
+            | @isabstractexpr
+            | @isbaseofexpr
+            | @isclassexpr
+            | @isconvtoexpr
+            | @isemptyexpr
+            | @isenumexpr
+            | @ispodexpr
+            | @ispolyexpr
+            | @isunionexpr
+            | @typescompexpr
+            | @builtinshufflevector
+            | @builtinconvertvector
+            | @builtinaddressof
+            | @istriviallyconstructibleexpr
+            | @isdestructibleexpr
+            | @isnothrowdestructibleexpr
+            | @istriviallydestructibleexpr
+            | @istriviallyassignableexpr
+            | @isnothrowassignableexpr
+            | @istrivialexpr
+            | @isstandardlayoutexpr
+            | @istriviallycopyableexpr
+            | @isliteraltypeexpr
+            | @hastrivialmoveconstructorexpr
+            | @hastrivialmoveassignexpr
+            | @hasnothrowmoveassignexpr
+            | @isconstructibleexpr
+            | @isnothrowconstructibleexpr
+            | @hasfinalizerexpr
+            | @isdelegateexpr
+            | @isinterfaceclassexpr
+            | @isrefarrayexpr
+            | @isrefclassexpr
+            | @issealedexpr
+            | @issimplevalueclassexpr
+            | @isvalueclassexpr
+            | @isfinalexpr
+            | @builtinchooseexpr
+            | @builtincomplex
+            | @isassignable
+            | @isaggregate
+            | @hasuniqueobjectrepresentations
+            | @builtinbitcast
+            | @builtinshuffle
+            | @issame
+            | @isfunction
+            | @islayoutcompatible
+            | @ispointerinterconvertiblebaseof
+            | @isarray
+            | @arrayrank
+            | @arrayextent
+            | @isarithmetic
+            | @iscompletetype
+            | @iscompound
+            | @isconst
+            | @isfloatingpoint
+            | @isfundamental
+            | @isintegral
+            | @islvaluereference
+            | @ismemberfunctionpointer
+            | @ismemberobjectpointer
+            | @ismemberpointer
+            | @isobject
+            | @ispointer
+            | @isreference
+            | @isrvaluereference
+            | @isscalar
+            | @issigned
+            | @isunsigned
+            | @isvoid
+            | @isvolatile
+            | @istriviallycopyassignable
+            | @isassignablenopreconditioncheck
+            | @referencebindstotemporary
+            | @issameas
+            | @builtinhasattribute
+            | @ispointerinterconvertiblewithclass
+            | @builtinispointerinterconvertiblewithclass
+            | @iscorrespondingmember
+            | @builtiniscorrespondingmember
+            | @isboundedarray
+            | @isunboundedarray
+            | @isreferenceable
+            | @isnothrowconvertible
+            | @referenceconstructsfromtemporary
+            | @referenceconvertsfromtemporary
+            | @isconvertible
+            | @isvalidwinrttype
+            | @iswinclass
+            | @iswininterface
+            | @istriviallyequalitycomparable
+            | @isscopedenum
+            | @istriviallyrelocatable
+            ;
+
+compound_requirement_is_noexcept(
+    int expr: @compound_requirement ref
+);
+
+new_allocated_type(
+    unique int expr: @new_expr ref,
+    int type_id: @type ref
+);
+
+new_array_allocated_type(
+    unique int expr: @new_array_expr ref,
+    int type_id: @type ref
+);
+
+/**
+ * The field being initialized by an initializer expression within an aggregate
+ * initializer for a class/struct/union. Position is used to sort repeated initializers.
+ */
+#keyset[aggregate, position]
+aggregate_field_init(
+    int aggregate: @aggregateliteral ref,
+    int initializer: @expr ref,
+    int field: @membervariable ref,
+    int position: int ref,
+    boolean is_designated: boolean ref
+);
+
+/**
+ * The index of the element being initialized by an initializer expression
+ * within an aggregate initializer for an array. Position is used to sort repeated initializers.
+ */
+#keyset[aggregate, position]
+aggregate_array_init(
+    int aggregate: @aggregateliteral ref,
+    int initializer: @expr ref,
+    int element_index: int ref,
+    int position: int ref,
+    boolean is_designated: boolean ref
+);
+
+@ctorinit = @ctordirectinit
+          | @ctorvirtualinit
+          | @ctorfieldinit
+          | @ctordelegatinginit;
+@dtordestruct = @dtordirectdestruct
+              | @dtorvirtualdestruct
+              | @dtorfielddestruct;
+
+
+condition_decl_bind(
+    unique int expr: @condition_decl ref,
+    unique int decl: @declaration ref
+);
+
+typeid_bind(
+    unique int expr: @type_id ref,
+    int type_id: @type ref
+);
+
+uuidof_bind(
+    unique int expr: @uuidof ref,
+    int type_id: @type ref
+);
+
+@sizeof_or_alignof = @runtime_sizeof | @runtime_alignof | @datasizeof | @sizeof_pack;
+
+sizeof_bind(
+    unique int expr: @sizeof_or_alignof ref,
+    int type_id: @type ref
+);
+
+code_block(
+    unique int block: @literal ref,
+    unique int routine: @function ref
+);
+
+lambdas(
+    unique int expr: @lambdaexpr ref,
+    string default_capture: string ref,
+    boolean has_explicit_return_type: boolean ref,
+    boolean has_explicit_parameter_list: boolean ref
+);
+
+lambda_capture(
+    unique int id: @lambdacapture,
+    int lambda: @lambdaexpr ref,
+    int index: int ref,
+    int field: @membervariable ref,
+    boolean captured_by_reference: boolean ref,
+    boolean is_implicit: boolean ref,
+    int location: @location_default ref
+);
+
+@funbindexpr = @routineexpr
+             | @new_expr
+             | @delete_expr
+             | @delete_array_expr
+             | @ctordirectinit
+             | @ctorvirtualinit
+             | @ctordelegatinginit
+             | @dtordirectdestruct
+             | @dtorvirtualdestruct;
+
+@varbindexpr = @varaccess | @ctorfieldinit | @dtorfielddestruct;
+@addressable = @function | @variable ;
+@accessible = @addressable | @enumconstant ;
+
+@access = @varaccess | @routineexpr ;
+
+fold(
+    int expr: @foldexpr ref,
+    string operator: string ref,
+    boolean is_left_fold: boolean ref
+);
+
+stmts(
+    unique int id: @stmt,
+    int kind: int ref,
+    int location: @location_default ref
+);
+
+case @stmt.kind of
+    1 = @stmt_expr
+|   2 = @stmt_if
+|   3 = @stmt_while
+|   4 = @stmt_goto
+|   5 = @stmt_label
+|   6 = @stmt_return
+|   7 = @stmt_block
+|   8 = @stmt_end_test_while // do { ... } while ( ... )
+|   9 = @stmt_for
+|  10 = @stmt_switch_case
+|  11 = @stmt_switch
+|  13 = @stmt_asm // "asm" statement or the body of an asm function
+|  15 = @stmt_try_block
+|  16 = @stmt_microsoft_try // Microsoft
+|  17 = @stmt_decl
+|  18 = @stmt_set_vla_size // C99
+|  19 = @stmt_vla_decl // C99
+|  25 = @stmt_assigned_goto // GNU
+|  26 = @stmt_empty
+|  27 = @stmt_continue
+|  28 = @stmt_break
+|  29 = @stmt_range_based_for // C++11
+// ...  30 @stmt_at_autoreleasepool_block deprecated
+// ...  31 @stmt_objc_for_in deprecated
+// ...  32 @stmt_at_synchronized deprecated
+|  33 = @stmt_handler
+// ...  34 @stmt_finally_end deprecated
+|  35 = @stmt_constexpr_if
+|  37 = @stmt_co_return
+|  38 = @stmt_consteval_if
+|  39 = @stmt_not_consteval_if
+|  40 = @stmt_leave
+;
+
+type_vla(
+    int type_id: @type ref,
+    int decl: @stmt_vla_decl ref
+);
+
+variable_vla(
+    int var: @variable ref,
+    int decl: @stmt_vla_decl ref
+);
+
+type_is_vla(unique int type_id: @derivedtype ref)
+
+if_initialization(
+    unique int if_stmt: @stmt_if ref,
+    int init_id: @stmt ref
+);
+
+if_then(
+    unique int if_stmt: @stmt_if ref,
+    int then_id: @stmt ref
+);
+
+if_else(
+    unique int if_stmt: @stmt_if ref,
+    int else_id: @stmt ref
+);
+
+constexpr_if_initialization(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int init_id: @stmt ref
+);
+
+constexpr_if_then(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int then_id: @stmt ref
+);
+
+constexpr_if_else(
+    unique int constexpr_if_stmt: @stmt_constexpr_if ref,
+    int else_id: @stmt ref
+);
+
+@stmt_consteval_or_not_consteval_if = @stmt_consteval_if | @stmt_not_consteval_if;
+
+consteval_if_then(
+    unique int constexpr_if_stmt: @stmt_consteval_or_not_consteval_if ref,
+    int then_id: @stmt ref
+);
+
+consteval_if_else(
+    unique int constexpr_if_stmt: @stmt_consteval_or_not_consteval_if ref,
+    int else_id: @stmt ref
+);
+
+while_body(
+    unique int while_stmt: @stmt_while ref,
+    int body_id: @stmt ref
+);
+
+do_body(
+    unique int do_stmt: @stmt_end_test_while ref,
+    int body_id: @stmt ref
+);
+
+switch_initialization(
+    unique int switch_stmt: @stmt_switch ref,
+    int init_id: @stmt ref
+);
+
+#keyset[switch_stmt, index]
+switch_case(
+    int switch_stmt: @stmt_switch ref,
+    int index: int ref,
+    int case_id: @stmt_switch_case ref
+);
+
+switch_body(
+    unique int switch_stmt: @stmt_switch ref,
+    int body_id: @stmt ref
+);
+
+@stmt_for_or_range_based_for = @stmt_for
+                             | @stmt_range_based_for;
+
+for_initialization(
+    unique int for_stmt: @stmt_for_or_range_based_for ref,
+    int init_id: @stmt ref
+);
+
+for_condition(
+    unique int for_stmt: @stmt_for ref,
+    int condition_id: @expr ref
+);
+
+for_update(
+    unique int for_stmt: @stmt_for ref,
+    int update_id: @expr ref
+);
+
+for_body(
+    unique int for_stmt: @stmt_for ref,
+    int body_id: @stmt ref
+);
+
+@stmtparent = @stmt | @expr_stmt ;
+stmtparents(
+    unique int id: @stmt ref,
+    int index: int ref,
+    int parent: @stmtparent ref
+);
+
+ishandler(unique int block: @stmt_block ref);
+
+@cfgnode = @stmt | @expr | @function | @initialiser ;
+
+stmt_decl_bind(
+    int stmt: @stmt_decl ref,
+    int num: int ref,
+    int decl: @declaration ref
+);
+
+stmt_decl_entry_bind(
+    int stmt: @stmt_decl ref,
+    int num: int ref,
+    int decl_entry: @element ref
+);
+
+@parameterized_element = @function | @stmt_block | @requires_expr;
+
+blockscope(
+    unique int block: @stmt_block ref,
+    int enclosing: @parameterized_element ref
+);
+
+@jump = @stmt_goto | @stmt_break | @stmt_continue | @stmt_leave;
+
+@jumporlabel = @jump | @stmt_label | @literal;
+
+jumpinfo(
+    unique int id: @jumporlabel ref,
+    string str: string ref,
+    int target: @stmt ref
+);
+
+preprocdirects(
+    unique int id: @preprocdirect,
+    int kind: int ref,
+    int location: @location_default ref
+);
+case @preprocdirect.kind of
+   0 = @ppd_if
+|  1 = @ppd_ifdef
+|  2 = @ppd_ifndef
+|  3 = @ppd_elif
+|  4 = @ppd_else
+|  5 = @ppd_endif
+|  6 = @ppd_plain_include
+|  7 = @ppd_define
+|  8 = @ppd_undef
+|  9 = @ppd_line
+| 10 = @ppd_error
+| 11 = @ppd_pragma
+| 12 = @ppd_objc_import
+| 13 = @ppd_include_next
+| 14 = @ppd_ms_import
+| 15 = @ppd_elifdef
+| 16 = @ppd_elifndef
+| 18 = @ppd_warning
+;
+
+@ppd_include = @ppd_plain_include | @ppd_objc_import | @ppd_include_next | @ppd_ms_import;
+
+@ppd_branch = @ppd_if | @ppd_ifdef | @ppd_ifndef | @ppd_elif | @ppd_elifdef | @ppd_elifndef;
+
+preprocpair(
+    int begin : @ppd_branch ref,
+    int elseelifend : @preprocdirect ref
+);
+
+preproctrue(int branch : @ppd_branch ref);
+preprocfalse(int branch : @ppd_branch ref);
+
+preproctext(
+    unique int id: @preprocdirect ref,
+    string head: string ref,
+    string body: string ref
+);
+
+includes(
+    unique int id: @ppd_include ref,
+    int included: @file ref
+);
+
+link_targets(
+    int id: @link_target,
+    int binary: @file ref
+);
+
+link_parent(
+    int element : @element ref,
+    int link_target : @link_target ref
+);
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
diff --git a/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/upgrade.properties b/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/cpp/ql/lib/upgrades/d2d611b3fdcc7c4fe370f0d115200a3aa6ad5837/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/old.dbscheme b/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/old.dbscheme
new file mode 100644
index 000000000000..578367e82a25
--- /dev/null
+++ b/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/old.dbscheme
@@ -0,0 +1,1217 @@
+/*** Standard fragments ***/
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- JavaScript-specific part -*/
+
+@location = @location_default
+
+@sourceline = @locatable;
+
+filetype(
+  int file: @file ref,
+  string filetype: string ref
+)
+
+// top-level code fragments
+toplevels (unique int id: @toplevel,
+           int kind: int ref);
+
+is_externs (int toplevel: @toplevel ref);
+
+case @toplevel.kind of
+   0 = @script
+|  1 = @inline_script
+|  2 = @event_handler
+|  3 = @javascript_url
+|  4 = @template_toplevel;
+
+is_module (int tl: @toplevel ref);
+is_nodejs (int tl: @toplevel ref);
+is_es2015_module (int tl: @toplevel ref);
+is_closure_module (int tl: @toplevel ref);
+
+@xml_node_with_code = @xmlelement | @xmlattribute | @template_placeholder_tag;
+toplevel_parent_xml_node(
+  unique int toplevel: @toplevel ref,
+  int xmlnode: @xml_node_with_code ref);
+
+xml_element_parent_expression(
+  unique int xmlnode: @xmlelement ref,
+  int expression: @expr ref,
+  int index: int ref);
+
+// statements
+#keyset[parent, idx]
+stmts (unique int id: @stmt,
+       int kind: int ref,
+       int parent: @stmt_parent ref,
+       int idx: int ref,
+       varchar(900) tostring: string ref);
+
+stmt_containers (unique int stmt: @stmt ref,
+       int container: @stmt_container ref);
+
+jump_targets (unique int jump: @stmt ref,
+       int target: @stmt ref);
+
+@stmt_parent = @stmt | @toplevel | @function_expr | @arrow_function_expr | @static_initializer;
+@stmt_container = @toplevel | @function | @namespace_declaration | @external_module_declaration | @global_augmentation_declaration;
+
+case @stmt.kind of
+   0 = @empty_stmt
+|  1 = @block_stmt
+|  2 = @expr_stmt
+|  3 = @if_stmt
+|  4 = @labeled_stmt
+|  5 = @break_stmt
+|  6 = @continue_stmt
+|  7 = @with_stmt
+|  8 = @switch_stmt
+|  9 = @return_stmt
+| 10 = @throw_stmt
+| 11 = @try_stmt
+| 12 = @while_stmt
+| 13 = @do_while_stmt
+| 14 = @for_stmt
+| 15 = @for_in_stmt
+| 16 = @debugger_stmt
+| 17 = @function_decl_stmt
+| 18 = @var_decl_stmt
+| 19 = @case
+| 20 = @catch_clause
+| 21 = @for_of_stmt
+| 22 = @const_decl_stmt
+| 23 = @let_stmt
+| 24 = @legacy_let_stmt
+| 25 = @for_each_stmt
+| 26 = @class_decl_stmt
+| 27 = @import_declaration
+| 28 = @export_all_declaration
+| 29 = @export_default_declaration
+| 30 = @export_named_declaration
+| 31 = @namespace_declaration
+| 32 = @import_equals_declaration
+| 33 = @export_assign_declaration
+| 34 = @interface_declaration
+| 35 = @type_alias_declaration
+| 36 = @enum_declaration
+| 37 = @external_module_declaration
+| 38 = @export_as_namespace_declaration
+| 39 = @global_augmentation_declaration
+| 40 = @using_decl_stmt
+;
+
+@decl_stmt = @var_decl_stmt | @const_decl_stmt | @let_stmt | @legacy_let_stmt | @using_decl_stmt;
+
+@export_declaration = @export_all_declaration | @export_default_declaration | @export_named_declaration;
+
+@namespace_definition = @namespace_declaration | @enum_declaration;
+@type_definition = @class_definition | @interface_declaration | @enum_declaration | @type_alias_declaration | @enum_member;
+
+is_instantiated(unique int decl: @namespace_declaration ref);
+
+@declarable_node = @decl_stmt | @namespace_declaration | @class_decl_stmt | @function_decl_stmt | @enum_declaration | @external_module_declaration | @global_augmentation_declaration | @field;
+has_declare_keyword(unique int stmt: @declarable_node ref);
+
+is_for_await_of(unique int forof: @for_of_stmt ref);
+
+// expressions
+#keyset[parent, idx]
+exprs (unique int id: @expr,
+       int kind: int ref,
+       int parent: @expr_parent ref,
+       int idx: int ref,
+       varchar(900) tostring: string ref);
+
+literals (varchar(900) value: string ref,
+       varchar(900) raw: string ref,
+       unique int expr: @expr_or_type ref);
+
+enclosing_stmt (unique int expr: @expr_or_type ref,
+       int stmt: @stmt ref);
+
+expr_containers (unique int expr: @expr_or_type ref,
+       int container: @stmt_container ref);
+
+array_size (unique int ae: @arraylike ref,
+       int sz: int ref);
+
+is_delegating (int yield: @yield_expr ref);
+
+@expr_or_stmt = @expr | @stmt;
+@expr_or_type = @expr | @typeexpr;
+@expr_parent = @expr_or_stmt | @property | @function_typeexpr;
+@arraylike = @array_expr | @array_pattern;
+@type_annotation = @typeexpr | @jsdoc_type_expr;
+@node_in_stmt_container = @cfg_node | @type_annotation | @toplevel;
+
+case @expr.kind of
+   0 = @label
+|  1 = @null_literal
+|  2 = @boolean_literal
+|  3 = @number_literal
+|  4 = @string_literal
+|  5 = @regexp_literal
+|  6 = @this_expr
+|  7 = @array_expr
+|  8 = @obj_expr
+|  9 = @function_expr
+| 10 = @seq_expr
+| 11 = @conditional_expr
+| 12 = @new_expr
+| 13 = @call_expr
+| 14 = @dot_expr
+| 15 = @index_expr
+| 16 = @neg_expr
+| 17 = @plus_expr
+| 18 = @log_not_expr
+| 19 = @bit_not_expr
+| 20 = @typeof_expr
+| 21 = @void_expr
+| 22 = @delete_expr
+| 23 = @eq_expr
+| 24 = @neq_expr
+| 25 = @eqq_expr
+| 26 = @neqq_expr
+| 27 = @lt_expr
+| 28 = @le_expr
+| 29 = @gt_expr
+| 30 = @ge_expr
+| 31 = @lshift_expr
+| 32 = @rshift_expr
+| 33 = @urshift_expr
+| 34 = @add_expr
+| 35 = @sub_expr
+| 36 = @mul_expr
+| 37 = @div_expr
+| 38 = @mod_expr
+| 39 = @bitor_expr
+| 40 = @xor_expr
+| 41 = @bitand_expr
+| 42 = @in_expr
+| 43 = @instanceof_expr
+| 44 = @logand_expr
+| 45 = @logor_expr
+| 47 = @assign_expr
+| 48 = @assign_add_expr
+| 49 = @assign_sub_expr
+| 50 = @assign_mul_expr
+| 51 = @assign_div_expr
+| 52 = @assign_mod_expr
+| 53 = @assign_lshift_expr
+| 54 = @assign_rshift_expr
+| 55 = @assign_urshift_expr
+| 56 = @assign_or_expr
+| 57 = @assign_xor_expr
+| 58 = @assign_and_expr
+| 59 = @preinc_expr
+| 60 = @postinc_expr
+| 61 = @predec_expr
+| 62 = @postdec_expr
+| 63 = @par_expr
+| 64 = @var_declarator
+| 65 = @arrow_function_expr
+| 66 = @spread_element
+| 67 = @array_pattern
+| 68 = @object_pattern
+| 69 = @yield_expr
+| 70 = @tagged_template_expr
+| 71 = @template_literal
+| 72 = @template_element
+| 73 = @array_comprehension_expr
+| 74 = @generator_expr
+| 75 = @for_in_comprehension_block
+| 76 = @for_of_comprehension_block
+| 77 = @legacy_letexpr
+| 78 = @var_decl
+| 79 = @proper_varaccess
+| 80 = @class_expr
+| 81 = @super_expr
+| 82 = @newtarget_expr
+| 83 = @named_import_specifier
+| 84 = @import_default_specifier
+| 85 = @import_namespace_specifier
+| 86 = @named_export_specifier
+| 87 = @exp_expr
+| 88 = @assign_exp_expr
+| 89 = @jsx_element
+| 90 = @jsx_qualified_name
+| 91 = @jsx_empty_expr
+| 92 = @await_expr
+| 93 = @function_sent_expr
+| 94 = @decorator
+| 95 = @export_default_specifier
+| 96 = @export_namespace_specifier
+| 97 = @bind_expr
+| 98 = @external_module_reference
+| 99 = @dynamic_import
+| 100 = @expression_with_type_arguments
+| 101 = @prefix_type_assertion
+| 102 = @as_type_assertion
+| 103 = @export_varaccess
+| 104 = @decorator_list
+| 105 = @non_null_assertion
+| 106 = @bigint_literal
+| 107 = @nullishcoalescing_expr
+| 108 = @e4x_xml_anyname
+| 109 = @e4x_xml_static_attribute_selector
+| 110 = @e4x_xml_dynamic_attribute_selector
+| 111 = @e4x_xml_filter_expression
+| 112 = @e4x_xml_static_qualident
+| 113 = @e4x_xml_dynamic_qualident
+| 114 = @e4x_xml_dotdotexpr
+| 115 = @import_meta_expr
+| 116 = @assignlogandexpr
+| 117 = @assignlogorexpr
+| 118 = @assignnullishcoalescingexpr
+| 119 = @template_pipe_ref
+| 120 = @generated_code_expr
+| 121 = @satisfies_expr
+;
+
+@varaccess = @proper_varaccess | @export_varaccess;
+@varref = @var_decl | @varaccess;
+
+@identifier = @label | @varref | @type_identifier;
+
+@literal = @null_literal | @boolean_literal | @number_literal | @string_literal | @regexp_literal | @bigint_literal;
+
+@propaccess = @dot_expr | @index_expr;
+
+@invokeexpr = @new_expr | @call_expr;
+
+@unaryexpr = @neg_expr | @plus_expr | @log_not_expr | @bit_not_expr | @typeof_expr | @void_expr | @delete_expr | @spread_element;
+
+@equality_test = @eq_expr | @neq_expr | @eqq_expr | @neqq_expr;
+
+@comparison = @equality_test | @lt_expr | @le_expr | @gt_expr | @ge_expr;
+
+@binaryexpr = @comparison | @lshift_expr | @rshift_expr | @urshift_expr | @add_expr | @sub_expr | @mul_expr | @div_expr | @mod_expr | @exp_expr | @bitor_expr | @xor_expr | @bitand_expr | @in_expr | @instanceof_expr | @logand_expr | @logor_expr | @nullishcoalescing_expr;
+
+@assignment = @assign_expr | @assign_add_expr | @assign_sub_expr | @assign_mul_expr | @assign_div_expr | @assign_mod_expr | @assign_exp_expr | @assign_lshift_expr | @assign_rshift_expr | @assign_urshift_expr | @assign_or_expr | @assign_xor_expr | @assign_and_expr | @assignlogandexpr | @assignlogorexpr | @assignnullishcoalescingexpr;
+
+@updateexpr = @preinc_expr | @postinc_expr | @predec_expr | @postdec_expr;
+
+@pattern = @varref | @array_pattern | @object_pattern;
+
+@comprehension_expr = @array_comprehension_expr | @generator_expr;
+
+@comprehension_block = @for_in_comprehension_block | @for_of_comprehension_block;
+
+@import_specifier = @named_import_specifier | @import_default_specifier | @import_namespace_specifier;
+
+@exportspecifier = @named_export_specifier | @export_default_specifier | @export_namespace_specifier;
+
+@type_keyword_operand = @import_declaration | @export_declaration | @import_specifier;
+
+@type_assertion = @as_type_assertion | @prefix_type_assertion;
+
+@class_definition = @class_decl_stmt | @class_expr;
+@interface_definition = @interface_declaration | @interface_typeexpr;
+@class_or_interface = @class_definition | @interface_definition;
+
+@lexical_decl = @var_decl | @type_decl;
+@lexical_access = @varaccess | @local_type_access | @local_var_type_access | @local_namespace_access;
+@lexical_ref = @lexical_decl | @lexical_access;
+
+@e4x_xml_attribute_selector = @e4x_xml_static_attribute_selector | @e4x_xml_dynamic_attribute_selector;
+@e4x_xml_qualident = @e4x_xml_static_qualident | @e4x_xml_dynamic_qualident;
+
+expr_contains_template_tag_location(
+  int expr: @expr ref,
+  int location: @location ref
+);
+
+@template_placeholder_tag_parent = @xmlelement | @xmlattribute | @file;
+
+template_placeholder_tag_info(
+  unique int node: @template_placeholder_tag,
+  int parentNode: @template_placeholder_tag_parent ref,
+  varchar(900) raw: string ref
+);
+
+// scopes
+scopes (unique int id: @scope,
+        int kind: int ref);
+
+case @scope.kind of
+   0 = @global_scope
+|  1 = @function_scope
+|  2 = @catch_scope
+|  3 = @module_scope
+|  4 = @block_scope
+|  5 = @for_scope
+|  6 = @for_in_scope // for-of scopes work the same as for-in scopes
+|  7 = @comprehension_block_scope
+|  8 = @class_expr_scope
+|  9 = @namespace_scope
+| 10 = @class_decl_scope
+| 11 = @interface_scope
+| 12 = @type_alias_scope
+| 13 = @mapped_type_scope
+| 14 = @enum_scope
+| 15 = @external_module_scope
+| 16 = @conditional_type_scope;
+
+scopenodes (unique int node: @ast_node ref,
+            int scope: @scope ref);
+
+scopenesting (unique int inner: @scope ref,
+              int outer: @scope ref);
+
+// functions
+@function = @function_decl_stmt | @function_expr | @arrow_function_expr;
+
+@parameterized = @function | @catch_clause;
+@type_parameterized = @function | @class_or_interface | @type_alias_declaration | @mapped_typeexpr | @infer_typeexpr;
+
+is_generator (int fun: @function ref);
+has_rest_parameter (int fun: @function ref);
+is_async (int fun: @function ref);
+
+// variables and lexically scoped type names
+#keyset[scope, name]
+variables (unique int id: @variable,
+           varchar(900) name: string ref,
+           int scope: @scope ref);
+
+#keyset[scope, name]
+local_type_names (unique int id: @local_type_name,
+                  varchar(900) name: string ref,
+                  int scope: @scope ref);
+
+#keyset[scope, name]
+local_namespace_names (unique int id: @local_namespace_name,
+                       varchar(900) name: string ref,
+                       int scope: @scope ref);
+
+is_arguments_object (int id: @variable ref);
+
+@lexical_name = @variable | @local_type_name | @local_namespace_name;
+
+@bind_id = @varaccess | @local_var_type_access;
+bind (unique int id: @bind_id ref,
+      int decl: @variable ref);
+
+decl (unique int id: @var_decl ref,
+      int decl: @variable ref);
+
+@typebind_id = @local_type_access | @export_varaccess;
+typebind (unique int id: @typebind_id ref,
+          int decl: @local_type_name ref);
+
+@typedecl_id = @type_decl | @var_decl;
+typedecl (unique int id: @typedecl_id ref,
+          int decl: @local_type_name ref);
+
+namespacedecl (unique int id: @var_decl ref,
+               int decl: @local_namespace_name ref);
+
+@namespacebind_id = @local_namespace_access | @export_varaccess;
+namespacebind (unique int id: @namespacebind_id ref,
+               int decl: @local_namespace_name ref);
+
+
+// properties in object literals, property patterns in object patterns, and method declarations in classes
+#keyset[parent, index]
+properties (unique int id: @property,
+            int parent: @property_parent ref,
+            int index: int ref,
+            int kind: int ref,
+            varchar(900) tostring: string ref);
+
+case @property.kind of
+  0 = @value_property
+| 1 = @property_getter
+| 2 = @property_setter
+| 3 = @jsx_attribute
+| 4 = @function_call_signature
+| 5 = @constructor_call_signature
+| 6 = @index_signature
+| 7 = @enum_member
+| 8 = @proper_field
+| 9 = @parameter_field
+| 10 = @static_initializer
+;
+
+@property_parent = @obj_expr | @object_pattern | @class_definition | @jsx_element | @interface_definition | @enum_declaration;
+@property_accessor = @property_getter | @property_setter;
+@call_signature = @function_call_signature | @constructor_call_signature;
+@field = @proper_field | @parameter_field;
+@field_or_vardeclarator = @field | @var_declarator;
+
+is_computed (int id: @property ref);
+is_method   (int id: @property ref);
+is_static   (int id: @property ref);
+is_abstract_member (int id: @property ref);
+is_const_enum (int id: @enum_declaration ref);
+is_abstract_class (int id: @class_decl_stmt ref);
+
+has_public_keyword (int id: @property ref);
+has_private_keyword (int id: @property ref);
+has_protected_keyword (int id: @property ref);
+has_readonly_keyword (int id: @property ref);
+has_type_keyword (int id: @type_keyword_operand ref);
+has_defer_keyword (int id: @import_declaration ref);
+is_optional_member (int id: @property ref);
+has_definite_assignment_assertion (int id: @field_or_vardeclarator ref);
+is_optional_parameter_declaration (unique int parameter: @pattern ref);
+
+#keyset[constructor, param_index]
+parameter_fields(
+  unique int field: @parameter_field ref,
+  int constructor: @function_expr ref,
+  int param_index: int ref
+);
+
+// types
+#keyset[parent, idx]
+typeexprs (
+  unique int id: @typeexpr,
+  int kind: int ref,
+  int parent: @typeexpr_parent ref,
+  int idx: int ref,
+  varchar(900) tostring: string ref
+);
+
+case @typeexpr.kind of
+  0 = @local_type_access
+| 1 = @type_decl
+| 2 = @keyword_typeexpr
+| 3 = @string_literal_typeexpr
+| 4 = @number_literal_typeexpr
+| 5 = @boolean_literal_typeexpr
+| 6 = @array_typeexpr
+| 7 = @union_typeexpr
+| 8 = @indexed_access_typeexpr
+| 9 = @intersection_typeexpr
+| 10 = @parenthesized_typeexpr
+| 11 = @tuple_typeexpr
+| 12 = @keyof_typeexpr
+| 13 = @qualified_type_access
+| 14 = @generic_typeexpr
+| 15 = @type_label
+| 16 = @typeof_typeexpr
+| 17 = @local_var_type_access
+| 18 = @qualified_var_type_access
+| 19 = @this_var_type_access
+| 20 = @predicate_typeexpr
+| 21 = @interface_typeexpr
+| 22 = @type_parameter
+| 23 = @plain_function_typeexpr
+| 24 = @constructor_typeexpr
+| 25 = @local_namespace_access
+| 26 = @qualified_namespace_access
+| 27 = @mapped_typeexpr
+| 28 = @conditional_typeexpr
+| 29 = @infer_typeexpr
+| 30 = @import_type_access
+| 31 = @import_namespace_access
+| 32 = @import_var_type_access
+| 33 = @optional_typeexpr
+| 34 = @rest_typeexpr
+| 35 = @bigint_literal_typeexpr
+| 36 = @readonly_typeexpr
+| 37 = @template_literal_typeexpr
+;
+
+@typeref = @typeaccess | @type_decl;
+@type_identifier = @type_decl | @local_type_access | @type_label | @local_var_type_access | @local_namespace_access;
+@typeexpr_parent = @expr | @stmt | @property | @typeexpr;
+@literal_typeexpr = @string_literal_typeexpr | @number_literal_typeexpr | @boolean_literal_typeexpr | @bigint_literal_typeexpr;
+@typeaccess = @local_type_access | @qualified_type_access | @import_type_access;
+@vartypeaccess = @local_var_type_access | @qualified_var_type_access | @this_var_type_access | @import_var_type_access;
+@namespace_access = @local_namespace_access | @qualified_namespace_access | @import_namespace_access;
+@import_typeexpr = @import_type_access | @import_namespace_access | @import_var_type_access;
+
+@function_typeexpr = @plain_function_typeexpr | @constructor_typeexpr;
+
+// types
+types (
+  unique int id: @type,
+  int kind: int ref,
+  varchar(900) tostring: string ref
+);
+
+#keyset[parent, idx]
+type_child (
+  int child: @type ref,
+  int parent: @type ref,
+  int idx: int ref
+);
+
+case @type.kind of
+  0 = @any_type
+| 1 = @string_type
+| 2 = @number_type
+| 3 = @union_type
+| 4 = @true_type
+| 5 = @false_type
+| 6 = @type_reference
+| 7 = @object_type
+| 8 = @canonical_type_variable_type
+| 9 = @typeof_type
+| 10 = @void_type
+| 11 = @undefined_type
+| 12 = @null_type
+| 13 = @never_type
+| 14 = @plain_symbol_type
+| 15 = @unique_symbol_type
+| 16 = @objectkeyword_type
+| 17 = @intersection_type
+| 18 = @tuple_type
+| 19 = @lexical_type_variable_type
+| 20 = @this_type
+| 21 = @number_literal_type
+| 22 = @string_literal_type
+| 23 = @unknown_type
+| 24 = @bigint_type
+| 25 = @bigint_literal_type
+;
+
+@boolean_literal_type = @true_type | @false_type;
+@symbol_type = @plain_symbol_type | @unique_symbol_type;
+@union_or_intersection_type = @union_type | @intersection_type;
+@typevariable_type = @canonical_type_variable_type | @lexical_type_variable_type;
+
+has_asserts_keyword(int node: @predicate_typeexpr ref);
+
+@typed_ast_node = @expr | @typeexpr | @function;
+ast_node_type(
+  unique int node: @typed_ast_node ref,
+  int typ: @type ref);
+
+declared_function_signature(
+  unique int node: @function ref,
+  int sig: @signature_type ref
+);
+
+invoke_expr_signature(
+  unique int node: @invokeexpr ref,
+  int sig: @signature_type ref
+);
+
+invoke_expr_overload_index(
+  unique int node: @invokeexpr ref,
+  int index: int ref
+);
+
+symbols (
+  unique int id: @symbol,
+  int kind: int ref,
+  varchar(900) name: string ref
+);
+
+symbol_parent (
+  unique int symbol: @symbol ref,
+  int parent: @symbol ref
+);
+
+symbol_module (
+  int symbol: @symbol ref,
+  varchar(900) moduleName: string ref
+);
+
+symbol_global (
+  int symbol: @symbol ref,
+  varchar(900) globalName: string ref
+);
+
+case @symbol.kind of
+  0 = @root_symbol
+| 1 = @member_symbol
+| 2 = @other_symbol
+;
+
+@type_with_symbol = @type_reference | @typevariable_type | @typeof_type | @unique_symbol_type;
+@ast_node_with_symbol = @type_definition | @namespace_definition | @toplevel | @typeaccess | @namespace_access | @var_decl | @function | @invokeexpr | @import_declaration | @external_module_reference | @external_module_declaration;
+
+ast_node_symbol(
+  unique int node: @ast_node_with_symbol ref,
+  int symbol: @symbol ref);
+
+type_symbol(
+  unique int typ: @type_with_symbol ref,
+  int symbol: @symbol ref);
+
+#keyset[typ, name]
+type_property(
+  int typ: @type ref,
+  varchar(900) name: string ref,
+  int propertyType: @type ref);
+
+type_alias(
+  unique int aliasType: @type ref,
+  int underlyingType: @type ref);
+
+@literal_type = @string_literal_type | @number_literal_type | @boolean_literal_type | @bigint_literal_type;
+@type_with_literal_value = @string_literal_type | @number_literal_type | @bigint_literal_type;
+type_literal_value(
+  unique int typ: @type_with_literal_value ref,
+  varchar(900) value: string ref);
+
+signature_types (
+  unique int id: @signature_type,
+  int kind: int ref,
+  varchar(900) tostring: string ref,
+  int type_parameters: int ref,
+  int required_params: int ref
+);
+
+is_abstract_signature(
+  unique int sig: @signature_type ref
+);
+
+signature_rest_parameter(
+  unique int sig: @signature_type ref,
+  int rest_param_arra_type: @type ref
+);
+
+case @signature_type.kind of
+  0 = @function_signature_type
+| 1 = @constructor_signature_type
+;
+
+#keyset[typ, kind, index]
+type_contains_signature (
+  int typ: @type ref,
+  int kind: int ref,  // constructor/call/index
+  int index: int ref, // ordering of overloaded signatures
+  int sig: @signature_type ref
+);
+
+#keyset[parent, index]
+signature_contains_type (
+  int child: @type ref,
+  int parent: @signature_type ref,
+  int index: int ref
+);
+
+#keyset[sig, index]
+signature_parameter_name (
+  int sig: @signature_type ref,
+  int index: int ref,
+  varchar(900) name: string ref
+);
+
+number_index_type (
+  unique int baseType: @type ref,
+  int propertyType: @type ref
+);
+
+string_index_type (
+  unique int baseType: @type ref,
+  int propertyType: @type ref
+);
+
+base_type_names(
+  int typeName: @symbol ref,
+  int baseTypeName: @symbol ref
+);
+
+self_types(
+  int typeName: @symbol ref,
+  int selfType: @type_reference ref
+);
+
+tuple_type_min_length(
+  unique int typ: @type ref,
+  int minLength: int ref
+);
+
+tuple_type_rest_index(
+  unique int typ: @type ref,
+  int index: int ref
+);
+
+// comments
+comments (unique int id: @comment,
+          int kind: int ref,
+          int toplevel: @toplevel ref,
+          varchar(900) text: string ref,
+          varchar(900) tostring: string ref);
+
+case @comment.kind of
+  0 = @slashslash_comment
+| 1 = @slashstar_comment
+| 2 = @doc_comment
+| 3 = @html_comment_start
+| 4 = @htmlcommentend;
+
+@html_comment = @html_comment_start | @htmlcommentend;
+@line_comment = @slashslash_comment | @html_comment;
+@block_comment = @slashstar_comment | @doc_comment;
+
+// source lines
+lines (unique int id: @line,
+       int toplevel: @toplevel ref,
+       varchar(900) text: string ref,
+       varchar(2) terminator: string ref);
+indentation (int file: @file ref,
+            int lineno: int ref,
+            varchar(1) indentChar: string ref,
+            int indentDepth: int ref);
+
+// JavaScript parse errors
+js_parse_errors (unique int id: @js_parse_error,
+        int toplevel: @toplevel ref,
+        varchar(900) message: string ref,
+        varchar(900) line: string ref);
+
+// regular expressions
+#keyset[parent, idx]
+regexpterm (unique int id: @regexpterm,
+        int kind: int ref,
+        int parent: @regexpparent ref,
+        int idx: int ref,
+        varchar(900) tostring: string ref);
+
+@regexpparent = @regexpterm | @regexp_literal | @string_literal | @add_expr;
+
+case @regexpterm.kind of
+   0 = @regexp_alt
+|  1 = @regexp_seq
+|  2 = @regexp_caret
+|  3 = @regexp_dollar
+|  4 = @regexp_wordboundary
+|  5 = @regexp_nonwordboundary
+|  6 = @regexp_positive_lookahead
+|  7 = @regexp_negative_lookahead
+|  8 = @regexp_star
+|  9 = @regexp_plus
+| 10 = @regexp_opt
+| 11 = @regexp_range
+| 12 = @regexp_dot
+| 13 = @regexp_group
+| 14 = @regexp_normal_constant
+| 15 = @regexp_hex_escape
+| 16 = @regexp_unicode_escape
+| 17 = @regexp_dec_escape
+| 18 = @regexp_oct_escape
+| 19 = @regexp_ctrl_escape
+| 20 = @regexp_char_class_escape
+| 21 = @regexp_id_escape
+| 22 = @regexp_backref
+| 23 = @regexp_char_class
+| 24 = @regexp_char_range
+| 25 = @regexp_positive_lookbehind
+| 26 = @regexp_negative_lookbehind
+| 27 = @regexp_unicode_property_escape
+| 28 = @regexp_quoted_string
+| 29 = @regexp_intersection
+| 30 = @regexp_subtraction;
+
+regexp_parse_errors (unique int id: @regexp_parse_error,
+    int regexp: @regexpterm ref,
+    varchar(900) message: string ref);
+
+@regexp_quantifier = @regexp_star | @regexp_plus | @regexp_opt | @regexp_range;
+@regexp_escape = @regexp_char_escape | @regexp_char_class_escape | @regexp_unicode_property_escape;
+@regexp_char_escape = @regexp_hex_escape | @regexp_unicode_escape | @regexp_dec_escape | @regexp_oct_escape | @regexp_ctrl_escape | @regexp_id_escape;
+@regexp_constant = @regexp_normal_constant | @regexp_char_escape;
+@regexp_lookahead = @regexp_positive_lookahead | @regexp_negative_lookahead;
+@regexp_lookbehind = @regexp_positive_lookbehind | @regexp_negative_lookbehind;
+@regexp_subpattern = @regexp_lookahead | @regexp_lookbehind;
+@regexp_anchor = @regexp_dollar | @regexp_caret;
+
+is_greedy (int id: @regexp_quantifier ref);
+range_quantifier_lower_bound (unique int id: @regexp_range ref, int lo: int ref);
+range_quantifier_upper_bound (unique int id: @regexp_range ref, int hi: int ref);
+is_capture (unique int id: @regexp_group ref, int number: int ref);
+is_named_capture (unique int id: @regexp_group ref, string name: string ref);
+is_inverted (int id: @regexp_char_class ref);
+regexp_const_value (unique int id: @regexp_constant ref, varchar(1) value: string ref);
+char_class_escape (unique int id: @regexp_char_class_escape ref, varchar(1) value: string ref);
+backref (unique int id: @regexp_backref ref, int value: int ref);
+named_backref (unique int id: @regexp_backref ref, string name: string ref);
+unicode_property_escapename (unique int id: @regexp_unicode_property_escape ref, string name: string ref);
+unicode_property_escapevalue (unique int id: @regexp_unicode_property_escape ref, string value: string ref);
+
+// tokens
+#keyset[toplevel, idx]
+tokeninfo (unique int id: @token,
+    int kind: int ref,
+    int toplevel: @toplevel ref,
+    int idx: int ref,
+    varchar(900) value: string ref);
+
+case @token.kind of
+  0 = @token_eof
+| 1 = @token_null_literal
+| 2 = @token_boolean_literal
+| 3 = @token_numeric_literal
+| 4 = @token_string_literal
+| 5 = @token_regular_expression
+| 6 = @token_identifier
+| 7 = @token_keyword
+| 8 = @token_punctuator;
+
+// associate comments with the token immediately following them (which may be EOF)
+next_token (int comment: @comment ref, int token: @token ref);
+
+// JSON
+#keyset[parent, idx]
+json (unique int id: @json_value,
+      int kind: int ref,
+      int parent: @json_parent ref,
+      int idx: int ref,
+      varchar(900) tostring: string ref);
+
+json_literals (varchar(900) value: string ref,
+      varchar(900) raw: string ref,
+      unique int expr: @json_value ref);
+
+json_properties (int obj: @json_object ref,
+      varchar(900) property: string ref,
+      int value: @json_value ref);
+
+json_errors (unique int id: @json_parse_error,
+      varchar(900) message: string ref);
+
+json_locations(unique int locatable: @json_locatable ref,
+      int location: @location_default ref);
+
+case @json_value.kind of
+  0 = @json_null
+| 1 = @json_boolean
+| 2 = @json_number
+| 3 = @json_string
+| 4 = @json_array
+| 5 = @json_object;
+
+@json_parent = @json_object | @json_array | @file;
+
+@json_locatable = @json_value | @json_parse_error;
+
+// locations
+@ast_node = @toplevel | @stmt | @expr | @property | @typeexpr;
+
+@locatable = @file
+    | @ast_node
+    | @comment
+    | @line
+    | @js_parse_error | @regexp_parse_error
+    | @regexpterm
+    | @json_locatable
+    | @token
+    | @cfg_node
+    | @jsdoc | @jsdoc_type_expr | @jsdoc_tag
+    | @yaml_locatable
+    | @xmllocatable
+    | @configLocatable
+    | @template_placeholder_tag;
+
+hasLocation (unique int locatable: @locatable ref,
+    int location: @location ref);
+
+// CFG
+entry_cfg_node (unique int id: @entry_node, int container: @stmt_container ref);
+exit_cfg_node (unique int id: @exit_node, int container: @stmt_container ref);
+guard_node (unique int id: @guard_node, int kind: int ref, int test: @expr ref);
+case @guard_node.kind of
+  0 = @falsy_guard
+| 1 = @truthy_guard;
+@condition_guard = @falsy_guard | @truthy_guard;
+
+@synthetic_cfg_node = @entry_node | @exit_node | @guard_node;
+@cfg_node = @synthetic_cfg_node | @expr_parent;
+
+successor (int pred: @cfg_node ref, int succ: @cfg_node ref);
+
+// JSDoc comments
+jsdoc (unique int id: @jsdoc, varchar(900) description: string ref, int comment: @comment ref);
+#keyset[parent, idx]
+jsdoc_tags (unique int id: @jsdoc_tag, varchar(900) title: string ref,
+            int parent: @jsdoc ref, int idx: int ref, varchar(900) tostring: string ref);
+jsdoc_tag_descriptions (unique int tag: @jsdoc_tag ref, varchar(900) text: string ref);
+jsdoc_tag_names (unique int tag: @jsdoc_tag ref, varchar(900) text: string ref);
+
+#keyset[parent, idx]
+jsdoc_type_exprs (unique int id: @jsdoc_type_expr,
+                  int kind: int ref,
+                  int parent: @jsdoc_type_expr_parent ref,
+                  int idx: int ref,
+                  varchar(900) tostring: string ref);
+case @jsdoc_type_expr.kind of
+    0 = @jsdoc_any_type_expr
+|   1 = @jsdoc_null_type_expr
+|   2 = @jsdoc_undefined_type_expr
+|   3 = @jsdoc_unknown_type_expr
+|   4 = @jsdoc_void_type_expr
+|   5 = @jsdoc_identifier_type_expr
+|   6 = @jsdoc_applied_type_expr
+|   7 = @jsdoc_nullable_type_expr
+|   8 = @jsdoc_non_nullable_type_expr
+|   9 = @jsdoc_record_type_expr
+|  10 = @jsdoc_array_type_expr
+|  11 = @jsdoc_union_type_expr
+|  12 = @jsdoc_function_type_expr
+|  13 = @jsdoc_optional_type_expr
+|  14 = @jsdoc_rest_type_expr
+|  15 = @jsdoc_qualified_type_expr
+;
+
+#keyset[id, idx]
+jsdoc_record_field_name (int id: @jsdoc_record_type_expr ref, int idx: int ref, varchar(900) name: string ref);
+jsdoc_prefix_qualifier (int id: @jsdoc_type_expr ref);
+jsdoc_has_new_parameter (int fn: @jsdoc_function_type_expr ref);
+
+@jsdoc_type_expr_parent = @jsdoc_type_expr | @jsdoc_tag;
+
+jsdoc_errors (unique int id: @jsdoc_error, int tag: @jsdoc_tag ref, varchar(900) message: string ref, varchar(900) tostring: string ref);
+
+@dataflownode = @expr | @function_decl_stmt | @class_decl_stmt | @namespace_declaration | @enum_declaration | @property;
+
+@optionalchainable = @call_expr | @propaccess;
+
+isOptionalChaining(int id: @optionalchainable ref);
+
+/**
+ * The time taken for the extraction of a file.
+ * This table contains non-deterministic content.
+ *
+ * The sum of the `time` column for each (`file`, `timerKind`) pair
+ * is the total time taken for extraction of `file`.  The `extractionPhase`
+ * column provides a granular view of the extraction time of the file.
+ */
+extraction_time(
+  int file : @file ref,
+  // see `com.semmle.js.extractor.ExtractionMetrics.ExtractionPhase`.
+  int extractionPhase: int ref,
+  // 0 for the elapsed CPU time in nanoseconds, 1 for the elapsed wallclock time in nanoseconds
+  int timerKind: int ref,
+  float time: float ref
+)
+
+/**
+* Non-timing related data for the extraction of a single file.
+* This table contains non-deterministic content.
+*/
+extraction_data(
+  int file : @file ref,
+  // the absolute path to the cache file
+  varchar(900) cacheFile: string ref,
+  boolean fromCache: boolean ref,
+  int length: int ref
+)
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
+
+/*- Configuration files with key value pairs -*/
+
+configs(
+  unique int id: @config
+);
+
+configNames(
+  unique int id: @configName,
+  int config: @config ref,
+  string name: string ref
+);
+
+configValues(
+  unique int id: @configValue,
+  int config: @config ref,
+  string value: string ref
+);
+
+configLocations(
+  int locatable: @configLocatable ref,
+  int location: @location_default ref
+);
+
+@configLocatable = @config | @configName | @configValue;
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
diff --git a/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/semmlecode.dbscheme b/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/semmlecode.dbscheme
new file mode 100644
index 000000000000..80b2bc241893
--- /dev/null
+++ b/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/semmlecode.dbscheme
@@ -0,0 +1,1205 @@
+/*** Standard fragments ***/
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- JavaScript-specific part -*/
+
+@location = @location_default
+
+@sourceline = @locatable;
+
+filetype(
+  int file: @file ref,
+  string filetype: string ref
+)
+
+// top-level code fragments
+toplevels (unique int id: @toplevel,
+           int kind: int ref);
+
+is_externs (int toplevel: @toplevel ref);
+
+case @toplevel.kind of
+   0 = @script
+|  1 = @inline_script
+|  2 = @event_handler
+|  3 = @javascript_url
+|  4 = @template_toplevel;
+
+is_module (int tl: @toplevel ref);
+is_nodejs (int tl: @toplevel ref);
+is_es2015_module (int tl: @toplevel ref);
+is_closure_module (int tl: @toplevel ref);
+
+@xml_node_with_code = @xmlelement | @xmlattribute | @template_placeholder_tag;
+toplevel_parent_xml_node(
+  unique int toplevel: @toplevel ref,
+  int xmlnode: @xml_node_with_code ref);
+
+xml_element_parent_expression(
+  unique int xmlnode: @xmlelement ref,
+  int expression: @expr ref,
+  int index: int ref);
+
+// statements
+#keyset[parent, idx]
+stmts (unique int id: @stmt,
+       int kind: int ref,
+       int parent: @stmt_parent ref,
+       int idx: int ref,
+       varchar(900) tostring: string ref);
+
+stmt_containers (unique int stmt: @stmt ref,
+       int container: @stmt_container ref);
+
+jump_targets (unique int jump: @stmt ref,
+       int target: @stmt ref);
+
+@stmt_parent = @stmt | @toplevel | @function_expr | @arrow_function_expr | @static_initializer;
+@stmt_container = @toplevel | @function | @namespace_declaration | @external_module_declaration | @global_augmentation_declaration;
+
+case @stmt.kind of
+   0 = @empty_stmt
+|  1 = @block_stmt
+|  2 = @expr_stmt
+|  3 = @if_stmt
+|  4 = @labeled_stmt
+|  5 = @break_stmt
+|  6 = @continue_stmt
+|  7 = @with_stmt
+|  8 = @switch_stmt
+|  9 = @return_stmt
+| 10 = @throw_stmt
+| 11 = @try_stmt
+| 12 = @while_stmt
+| 13 = @do_while_stmt
+| 14 = @for_stmt
+| 15 = @for_in_stmt
+| 16 = @debugger_stmt
+| 17 = @function_decl_stmt
+| 18 = @var_decl_stmt
+| 19 = @case
+| 20 = @catch_clause
+| 21 = @for_of_stmt
+| 22 = @const_decl_stmt
+| 23 = @let_stmt
+| 24 = @legacy_let_stmt
+| 25 = @for_each_stmt
+| 26 = @class_decl_stmt
+| 27 = @import_declaration
+| 28 = @export_all_declaration
+| 29 = @export_default_declaration
+| 30 = @export_named_declaration
+| 31 = @namespace_declaration
+| 32 = @import_equals_declaration
+| 33 = @export_assign_declaration
+| 34 = @interface_declaration
+| 35 = @type_alias_declaration
+| 36 = @enum_declaration
+| 37 = @external_module_declaration
+| 38 = @export_as_namespace_declaration
+| 39 = @global_augmentation_declaration
+| 40 = @using_decl_stmt
+;
+
+@decl_stmt = @var_decl_stmt | @const_decl_stmt | @let_stmt | @legacy_let_stmt | @using_decl_stmt;
+
+@export_declaration = @export_all_declaration | @export_default_declaration | @export_named_declaration;
+
+@namespace_definition = @namespace_declaration | @enum_declaration;
+@type_definition = @class_definition | @interface_declaration | @enum_declaration | @type_alias_declaration | @enum_member;
+
+is_instantiated(unique int decl: @namespace_declaration ref);
+
+@declarable_node = @decl_stmt | @namespace_declaration | @class_decl_stmt | @function_decl_stmt | @enum_declaration | @external_module_declaration | @global_augmentation_declaration | @field;
+has_declare_keyword(unique int stmt: @declarable_node ref);
+
+is_for_await_of(unique int forof: @for_of_stmt ref);
+
+// expressions
+#keyset[parent, idx]
+exprs (unique int id: @expr,
+       int kind: int ref,
+       int parent: @expr_parent ref,
+       int idx: int ref,
+       varchar(900) tostring: string ref);
+
+literals (varchar(900) value: string ref,
+       varchar(900) raw: string ref,
+       unique int expr: @expr_or_type ref);
+
+enclosing_stmt (unique int expr: @expr_or_type ref,
+       int stmt: @stmt ref);
+
+expr_containers (unique int expr: @expr_or_type ref,
+       int container: @stmt_container ref);
+
+array_size (unique int ae: @arraylike ref,
+       int sz: int ref);
+
+is_delegating (int yield: @yield_expr ref);
+
+@expr_or_stmt = @expr | @stmt;
+@expr_or_type = @expr | @typeexpr;
+@expr_parent = @expr_or_stmt | @property | @function_typeexpr;
+@arraylike = @array_expr | @array_pattern;
+@type_annotation = @typeexpr | @jsdoc_type_expr;
+@node_in_stmt_container = @cfg_node | @type_annotation | @toplevel;
+
+case @expr.kind of
+   0 = @label
+|  1 = @null_literal
+|  2 = @boolean_literal
+|  3 = @number_literal
+|  4 = @string_literal
+|  5 = @regexp_literal
+|  6 = @this_expr
+|  7 = @array_expr
+|  8 = @obj_expr
+|  9 = @function_expr
+| 10 = @seq_expr
+| 11 = @conditional_expr
+| 12 = @new_expr
+| 13 = @call_expr
+| 14 = @dot_expr
+| 15 = @index_expr
+| 16 = @neg_expr
+| 17 = @plus_expr
+| 18 = @log_not_expr
+| 19 = @bit_not_expr
+| 20 = @typeof_expr
+| 21 = @void_expr
+| 22 = @delete_expr
+| 23 = @eq_expr
+| 24 = @neq_expr
+| 25 = @eqq_expr
+| 26 = @neqq_expr
+| 27 = @lt_expr
+| 28 = @le_expr
+| 29 = @gt_expr
+| 30 = @ge_expr
+| 31 = @lshift_expr
+| 32 = @rshift_expr
+| 33 = @urshift_expr
+| 34 = @add_expr
+| 35 = @sub_expr
+| 36 = @mul_expr
+| 37 = @div_expr
+| 38 = @mod_expr
+| 39 = @bitor_expr
+| 40 = @xor_expr
+| 41 = @bitand_expr
+| 42 = @in_expr
+| 43 = @instanceof_expr
+| 44 = @logand_expr
+| 45 = @logor_expr
+| 47 = @assign_expr
+| 48 = @assign_add_expr
+| 49 = @assign_sub_expr
+| 50 = @assign_mul_expr
+| 51 = @assign_div_expr
+| 52 = @assign_mod_expr
+| 53 = @assign_lshift_expr
+| 54 = @assign_rshift_expr
+| 55 = @assign_urshift_expr
+| 56 = @assign_or_expr
+| 57 = @assign_xor_expr
+| 58 = @assign_and_expr
+| 59 = @preinc_expr
+| 60 = @postinc_expr
+| 61 = @predec_expr
+| 62 = @postdec_expr
+| 63 = @par_expr
+| 64 = @var_declarator
+| 65 = @arrow_function_expr
+| 66 = @spread_element
+| 67 = @array_pattern
+| 68 = @object_pattern
+| 69 = @yield_expr
+| 70 = @tagged_template_expr
+| 71 = @template_literal
+| 72 = @template_element
+| 73 = @array_comprehension_expr
+| 74 = @generator_expr
+| 75 = @for_in_comprehension_block
+| 76 = @for_of_comprehension_block
+| 77 = @legacy_letexpr
+| 78 = @var_decl
+| 79 = @proper_varaccess
+| 80 = @class_expr
+| 81 = @super_expr
+| 82 = @newtarget_expr
+| 83 = @named_import_specifier
+| 84 = @import_default_specifier
+| 85 = @import_namespace_specifier
+| 86 = @named_export_specifier
+| 87 = @exp_expr
+| 88 = @assign_exp_expr
+| 89 = @jsx_element
+| 90 = @jsx_qualified_name
+| 91 = @jsx_empty_expr
+| 92 = @await_expr
+| 93 = @function_sent_expr
+| 94 = @decorator
+| 95 = @export_default_specifier
+| 96 = @export_namespace_specifier
+| 97 = @bind_expr
+| 98 = @external_module_reference
+| 99 = @dynamic_import
+| 100 = @expression_with_type_arguments
+| 101 = @prefix_type_assertion
+| 102 = @as_type_assertion
+| 103 = @export_varaccess
+| 104 = @decorator_list
+| 105 = @non_null_assertion
+| 106 = @bigint_literal
+| 107 = @nullishcoalescing_expr
+| 108 = @e4x_xml_anyname
+| 109 = @e4x_xml_static_attribute_selector
+| 110 = @e4x_xml_dynamic_attribute_selector
+| 111 = @e4x_xml_filter_expression
+| 112 = @e4x_xml_static_qualident
+| 113 = @e4x_xml_dynamic_qualident
+| 114 = @e4x_xml_dotdotexpr
+| 115 = @import_meta_expr
+| 116 = @assignlogandexpr
+| 117 = @assignlogorexpr
+| 118 = @assignnullishcoalescingexpr
+| 119 = @template_pipe_ref
+| 120 = @generated_code_expr
+| 121 = @satisfies_expr
+;
+
+@varaccess = @proper_varaccess | @export_varaccess;
+@varref = @var_decl | @varaccess;
+
+@identifier = @label | @varref | @type_identifier;
+
+@literal = @null_literal | @boolean_literal | @number_literal | @string_literal | @regexp_literal | @bigint_literal;
+
+@propaccess = @dot_expr | @index_expr;
+
+@invokeexpr = @new_expr | @call_expr;
+
+@unaryexpr = @neg_expr | @plus_expr | @log_not_expr | @bit_not_expr | @typeof_expr | @void_expr | @delete_expr | @spread_element;
+
+@equality_test = @eq_expr | @neq_expr | @eqq_expr | @neqq_expr;
+
+@comparison = @equality_test | @lt_expr | @le_expr | @gt_expr | @ge_expr;
+
+@binaryexpr = @comparison | @lshift_expr | @rshift_expr | @urshift_expr | @add_expr | @sub_expr | @mul_expr | @div_expr | @mod_expr | @exp_expr | @bitor_expr | @xor_expr | @bitand_expr | @in_expr | @instanceof_expr | @logand_expr | @logor_expr | @nullishcoalescing_expr;
+
+@assignment = @assign_expr | @assign_add_expr | @assign_sub_expr | @assign_mul_expr | @assign_div_expr | @assign_mod_expr | @assign_exp_expr | @assign_lshift_expr | @assign_rshift_expr | @assign_urshift_expr | @assign_or_expr | @assign_xor_expr | @assign_and_expr | @assignlogandexpr | @assignlogorexpr | @assignnullishcoalescingexpr;
+
+@updateexpr = @preinc_expr | @postinc_expr | @predec_expr | @postdec_expr;
+
+@pattern = @varref | @array_pattern | @object_pattern;
+
+@comprehension_expr = @array_comprehension_expr | @generator_expr;
+
+@comprehension_block = @for_in_comprehension_block | @for_of_comprehension_block;
+
+@import_specifier = @named_import_specifier | @import_default_specifier | @import_namespace_specifier;
+
+@exportspecifier = @named_export_specifier | @export_default_specifier | @export_namespace_specifier;
+
+@type_keyword_operand = @import_declaration | @export_declaration | @import_specifier;
+
+@type_assertion = @as_type_assertion | @prefix_type_assertion;
+
+@class_definition = @class_decl_stmt | @class_expr;
+@interface_definition = @interface_declaration | @interface_typeexpr;
+@class_or_interface = @class_definition | @interface_definition;
+
+@lexical_decl = @var_decl | @type_decl;
+@lexical_access = @varaccess | @local_type_access | @local_var_type_access | @local_namespace_access;
+@lexical_ref = @lexical_decl | @lexical_access;
+
+@e4x_xml_attribute_selector = @e4x_xml_static_attribute_selector | @e4x_xml_dynamic_attribute_selector;
+@e4x_xml_qualident = @e4x_xml_static_qualident | @e4x_xml_dynamic_qualident;
+
+expr_contains_template_tag_location(
+  int expr: @expr ref,
+  int location: @location ref
+);
+
+@template_placeholder_tag_parent = @xmlelement | @xmlattribute | @file;
+
+template_placeholder_tag_info(
+  unique int node: @template_placeholder_tag,
+  int parentNode: @template_placeholder_tag_parent ref,
+  varchar(900) raw: string ref
+);
+
+// scopes
+scopes (unique int id: @scope,
+        int kind: int ref);
+
+case @scope.kind of
+   0 = @global_scope
+|  1 = @function_scope
+|  2 = @catch_scope
+|  3 = @module_scope
+|  4 = @block_scope
+|  5 = @for_scope
+|  6 = @for_in_scope // for-of scopes work the same as for-in scopes
+|  7 = @comprehension_block_scope
+|  8 = @class_expr_scope
+|  9 = @namespace_scope
+| 10 = @class_decl_scope
+| 11 = @interface_scope
+| 12 = @type_alias_scope
+| 13 = @mapped_type_scope
+| 14 = @enum_scope
+| 15 = @external_module_scope
+| 16 = @conditional_type_scope;
+
+scopenodes (unique int node: @ast_node ref,
+            int scope: @scope ref);
+
+scopenesting (unique int inner: @scope ref,
+              int outer: @scope ref);
+
+// functions
+@function = @function_decl_stmt | @function_expr | @arrow_function_expr;
+
+@parameterized = @function | @catch_clause;
+@type_parameterized = @function | @class_or_interface | @type_alias_declaration | @mapped_typeexpr | @infer_typeexpr;
+
+is_generator (int fun: @function ref);
+has_rest_parameter (int fun: @function ref);
+is_async (int fun: @function ref);
+
+// variables and lexically scoped type names
+#keyset[scope, name]
+variables (unique int id: @variable,
+           varchar(900) name: string ref,
+           int scope: @scope ref);
+
+#keyset[scope, name]
+local_type_names (unique int id: @local_type_name,
+                  varchar(900) name: string ref,
+                  int scope: @scope ref);
+
+#keyset[scope, name]
+local_namespace_names (unique int id: @local_namespace_name,
+                       varchar(900) name: string ref,
+                       int scope: @scope ref);
+
+is_arguments_object (int id: @variable ref);
+
+@lexical_name = @variable | @local_type_name | @local_namespace_name;
+
+@bind_id = @varaccess | @local_var_type_access;
+bind (unique int id: @bind_id ref,
+      int decl: @variable ref);
+
+decl (unique int id: @var_decl ref,
+      int decl: @variable ref);
+
+@typebind_id = @local_type_access | @export_varaccess;
+typebind (unique int id: @typebind_id ref,
+          int decl: @local_type_name ref);
+
+@typedecl_id = @type_decl | @var_decl;
+typedecl (unique int id: @typedecl_id ref,
+          int decl: @local_type_name ref);
+
+namespacedecl (unique int id: @var_decl ref,
+               int decl: @local_namespace_name ref);
+
+@namespacebind_id = @local_namespace_access | @export_varaccess;
+namespacebind (unique int id: @namespacebind_id ref,
+               int decl: @local_namespace_name ref);
+
+
+// properties in object literals, property patterns in object patterns, and method declarations in classes
+#keyset[parent, index]
+properties (unique int id: @property,
+            int parent: @property_parent ref,
+            int index: int ref,
+            int kind: int ref,
+            varchar(900) tostring: string ref);
+
+case @property.kind of
+  0 = @value_property
+| 1 = @property_getter
+| 2 = @property_setter
+| 3 = @jsx_attribute
+| 4 = @function_call_signature
+| 5 = @constructor_call_signature
+| 6 = @index_signature
+| 7 = @enum_member
+| 8 = @proper_field
+| 9 = @parameter_field
+| 10 = @static_initializer
+;
+
+@property_parent = @obj_expr | @object_pattern | @class_definition | @jsx_element | @interface_definition | @enum_declaration;
+@property_accessor = @property_getter | @property_setter;
+@call_signature = @function_call_signature | @constructor_call_signature;
+@field = @proper_field | @parameter_field;
+@field_or_vardeclarator = @field | @var_declarator;
+
+is_computed (int id: @property ref);
+is_method   (int id: @property ref);
+is_static   (int id: @property ref);
+is_abstract_member (int id: @property ref);
+is_const_enum (int id: @enum_declaration ref);
+is_abstract_class (int id: @class_decl_stmt ref);
+
+has_public_keyword (int id: @property ref);
+has_private_keyword (int id: @property ref);
+has_protected_keyword (int id: @property ref);
+has_readonly_keyword (int id: @property ref);
+has_type_keyword (int id: @type_keyword_operand ref);
+has_defer_keyword (int id: @import_declaration ref);
+is_optional_member (int id: @property ref);
+has_definite_assignment_assertion (int id: @field_or_vardeclarator ref);
+is_optional_parameter_declaration (unique int parameter: @pattern ref);
+
+#keyset[constructor, param_index]
+parameter_fields(
+  unique int field: @parameter_field ref,
+  int constructor: @function_expr ref,
+  int param_index: int ref
+);
+
+// types
+#keyset[parent, idx]
+typeexprs (
+  unique int id: @typeexpr,
+  int kind: int ref,
+  int parent: @typeexpr_parent ref,
+  int idx: int ref,
+  varchar(900) tostring: string ref
+);
+
+case @typeexpr.kind of
+  0 = @local_type_access
+| 1 = @type_decl
+| 2 = @keyword_typeexpr
+| 3 = @string_literal_typeexpr
+| 4 = @number_literal_typeexpr
+| 5 = @boolean_literal_typeexpr
+| 6 = @array_typeexpr
+| 7 = @union_typeexpr
+| 8 = @indexed_access_typeexpr
+| 9 = @intersection_typeexpr
+| 10 = @parenthesized_typeexpr
+| 11 = @tuple_typeexpr
+| 12 = @keyof_typeexpr
+| 13 = @qualified_type_access
+| 14 = @generic_typeexpr
+| 15 = @type_label
+| 16 = @typeof_typeexpr
+| 17 = @local_var_type_access
+| 18 = @qualified_var_type_access
+| 19 = @this_var_type_access
+| 20 = @predicate_typeexpr
+| 21 = @interface_typeexpr
+| 22 = @type_parameter
+| 23 = @plain_function_typeexpr
+| 24 = @constructor_typeexpr
+| 25 = @local_namespace_access
+| 26 = @qualified_namespace_access
+| 27 = @mapped_typeexpr
+| 28 = @conditional_typeexpr
+| 29 = @infer_typeexpr
+| 30 = @import_type_access
+| 31 = @import_namespace_access
+| 32 = @import_var_type_access
+| 33 = @optional_typeexpr
+| 34 = @rest_typeexpr
+| 35 = @bigint_literal_typeexpr
+| 36 = @readonly_typeexpr
+| 37 = @template_literal_typeexpr
+;
+
+@typeref = @typeaccess | @type_decl;
+@type_identifier = @type_decl | @local_type_access | @type_label | @local_var_type_access | @local_namespace_access;
+@typeexpr_parent = @expr | @stmt | @property | @typeexpr;
+@literal_typeexpr = @string_literal_typeexpr | @number_literal_typeexpr | @boolean_literal_typeexpr | @bigint_literal_typeexpr;
+@typeaccess = @local_type_access | @qualified_type_access | @import_type_access;
+@vartypeaccess = @local_var_type_access | @qualified_var_type_access | @this_var_type_access | @import_var_type_access;
+@namespace_access = @local_namespace_access | @qualified_namespace_access | @import_namespace_access;
+@import_typeexpr = @import_type_access | @import_namespace_access | @import_var_type_access;
+
+@function_typeexpr = @plain_function_typeexpr | @constructor_typeexpr;
+
+// types
+types (
+  unique int id: @type,
+  int kind: int ref,
+  varchar(900) tostring: string ref
+);
+
+#keyset[parent, idx]
+type_child (
+  int child: @type ref,
+  int parent: @type ref,
+  int idx: int ref
+);
+
+case @type.kind of
+  0 = @any_type
+| 1 = @string_type
+| 2 = @number_type
+| 3 = @union_type
+| 4 = @true_type
+| 5 = @false_type
+| 6 = @type_reference
+| 7 = @object_type
+| 8 = @canonical_type_variable_type
+| 9 = @typeof_type
+| 10 = @void_type
+| 11 = @undefined_type
+| 12 = @null_type
+| 13 = @never_type
+| 14 = @plain_symbol_type
+| 15 = @unique_symbol_type
+| 16 = @objectkeyword_type
+| 17 = @intersection_type
+| 18 = @tuple_type
+| 19 = @lexical_type_variable_type
+| 20 = @this_type
+| 21 = @number_literal_type
+| 22 = @string_literal_type
+| 23 = @unknown_type
+| 24 = @bigint_type
+| 25 = @bigint_literal_type
+;
+
+@boolean_literal_type = @true_type | @false_type;
+@symbol_type = @plain_symbol_type | @unique_symbol_type;
+@union_or_intersection_type = @union_type | @intersection_type;
+@typevariable_type = @canonical_type_variable_type | @lexical_type_variable_type;
+
+has_asserts_keyword(int node: @predicate_typeexpr ref);
+
+@typed_ast_node = @expr | @typeexpr | @function;
+ast_node_type(
+  unique int node: @typed_ast_node ref,
+  int typ: @type ref);
+
+declared_function_signature(
+  unique int node: @function ref,
+  int sig: @signature_type ref
+);
+
+invoke_expr_signature(
+  unique int node: @invokeexpr ref,
+  int sig: @signature_type ref
+);
+
+invoke_expr_overload_index(
+  unique int node: @invokeexpr ref,
+  int index: int ref
+);
+
+symbols (
+  unique int id: @symbol,
+  int kind: int ref,
+  varchar(900) name: string ref
+);
+
+symbol_parent (
+  unique int symbol: @symbol ref,
+  int parent: @symbol ref
+);
+
+symbol_module (
+  int symbol: @symbol ref,
+  varchar(900) moduleName: string ref
+);
+
+symbol_global (
+  int symbol: @symbol ref,
+  varchar(900) globalName: string ref
+);
+
+case @symbol.kind of
+  0 = @root_symbol
+| 1 = @member_symbol
+| 2 = @other_symbol
+;
+
+@type_with_symbol = @type_reference | @typevariable_type | @typeof_type | @unique_symbol_type;
+@ast_node_with_symbol = @type_definition | @namespace_definition | @toplevel | @typeaccess | @namespace_access | @var_decl | @function | @invokeexpr | @import_declaration | @external_module_reference | @external_module_declaration;
+
+ast_node_symbol(
+  unique int node: @ast_node_with_symbol ref,
+  int symbol: @symbol ref);
+
+type_symbol(
+  unique int typ: @type_with_symbol ref,
+  int symbol: @symbol ref);
+
+#keyset[typ, name]
+type_property(
+  int typ: @type ref,
+  varchar(900) name: string ref,
+  int propertyType: @type ref);
+
+type_alias(
+  unique int aliasType: @type ref,
+  int underlyingType: @type ref);
+
+@literal_type = @string_literal_type | @number_literal_type | @boolean_literal_type | @bigint_literal_type;
+@type_with_literal_value = @string_literal_type | @number_literal_type | @bigint_literal_type;
+type_literal_value(
+  unique int typ: @type_with_literal_value ref,
+  varchar(900) value: string ref);
+
+signature_types (
+  unique int id: @signature_type,
+  int kind: int ref,
+  varchar(900) tostring: string ref,
+  int type_parameters: int ref,
+  int required_params: int ref
+);
+
+is_abstract_signature(
+  unique int sig: @signature_type ref
+);
+
+signature_rest_parameter(
+  unique int sig: @signature_type ref,
+  int rest_param_arra_type: @type ref
+);
+
+case @signature_type.kind of
+  0 = @function_signature_type
+| 1 = @constructor_signature_type
+;
+
+#keyset[typ, kind, index]
+type_contains_signature (
+  int typ: @type ref,
+  int kind: int ref,  // constructor/call/index
+  int index: int ref, // ordering of overloaded signatures
+  int sig: @signature_type ref
+);
+
+#keyset[parent, index]
+signature_contains_type (
+  int child: @type ref,
+  int parent: @signature_type ref,
+  int index: int ref
+);
+
+#keyset[sig, index]
+signature_parameter_name (
+  int sig: @signature_type ref,
+  int index: int ref,
+  varchar(900) name: string ref
+);
+
+number_index_type (
+  unique int baseType: @type ref,
+  int propertyType: @type ref
+);
+
+string_index_type (
+  unique int baseType: @type ref,
+  int propertyType: @type ref
+);
+
+base_type_names(
+  int typeName: @symbol ref,
+  int baseTypeName: @symbol ref
+);
+
+self_types(
+  int typeName: @symbol ref,
+  int selfType: @type_reference ref
+);
+
+tuple_type_min_length(
+  unique int typ: @type ref,
+  int minLength: int ref
+);
+
+tuple_type_rest_index(
+  unique int typ: @type ref,
+  int index: int ref
+);
+
+// comments
+comments (unique int id: @comment,
+          int kind: int ref,
+          int toplevel: @toplevel ref,
+          varchar(900) text: string ref,
+          varchar(900) tostring: string ref);
+
+case @comment.kind of
+  0 = @slashslash_comment
+| 1 = @slashstar_comment
+| 2 = @doc_comment
+| 3 = @html_comment_start
+| 4 = @htmlcommentend;
+
+@html_comment = @html_comment_start | @htmlcommentend;
+@line_comment = @slashslash_comment | @html_comment;
+@block_comment = @slashstar_comment | @doc_comment;
+
+// source lines
+lines (unique int id: @line,
+       int toplevel: @toplevel ref,
+       varchar(900) text: string ref,
+       varchar(2) terminator: string ref);
+indentation (int file: @file ref,
+            int lineno: int ref,
+            varchar(1) indentChar: string ref,
+            int indentDepth: int ref);
+
+// JavaScript parse errors
+js_parse_errors (unique int id: @js_parse_error,
+        int toplevel: @toplevel ref,
+        varchar(900) message: string ref,
+        varchar(900) line: string ref);
+
+// regular expressions
+#keyset[parent, idx]
+regexpterm (unique int id: @regexpterm,
+        int kind: int ref,
+        int parent: @regexpparent ref,
+        int idx: int ref,
+        varchar(900) tostring: string ref);
+
+@regexpparent = @regexpterm | @regexp_literal | @string_literal | @add_expr;
+
+case @regexpterm.kind of
+   0 = @regexp_alt
+|  1 = @regexp_seq
+|  2 = @regexp_caret
+|  3 = @regexp_dollar
+|  4 = @regexp_wordboundary
+|  5 = @regexp_nonwordboundary
+|  6 = @regexp_positive_lookahead
+|  7 = @regexp_negative_lookahead
+|  8 = @regexp_star
+|  9 = @regexp_plus
+| 10 = @regexp_opt
+| 11 = @regexp_range
+| 12 = @regexp_dot
+| 13 = @regexp_group
+| 14 = @regexp_normal_constant
+| 15 = @regexp_hex_escape
+| 16 = @regexp_unicode_escape
+| 17 = @regexp_dec_escape
+| 18 = @regexp_oct_escape
+| 19 = @regexp_ctrl_escape
+| 20 = @regexp_char_class_escape
+| 21 = @regexp_id_escape
+| 22 = @regexp_backref
+| 23 = @regexp_char_class
+| 24 = @regexp_char_range
+| 25 = @regexp_positive_lookbehind
+| 26 = @regexp_negative_lookbehind
+| 27 = @regexp_unicode_property_escape
+| 28 = @regexp_quoted_string
+| 29 = @regexp_intersection
+| 30 = @regexp_subtraction;
+
+regexp_parse_errors (unique int id: @regexp_parse_error,
+    int regexp: @regexpterm ref,
+    varchar(900) message: string ref);
+
+@regexp_quantifier = @regexp_star | @regexp_plus | @regexp_opt | @regexp_range;
+@regexp_escape = @regexp_char_escape | @regexp_char_class_escape | @regexp_unicode_property_escape;
+@regexp_char_escape = @regexp_hex_escape | @regexp_unicode_escape | @regexp_dec_escape | @regexp_oct_escape | @regexp_ctrl_escape | @regexp_id_escape;
+@regexp_constant = @regexp_normal_constant | @regexp_char_escape;
+@regexp_lookahead = @regexp_positive_lookahead | @regexp_negative_lookahead;
+@regexp_lookbehind = @regexp_positive_lookbehind | @regexp_negative_lookbehind;
+@regexp_subpattern = @regexp_lookahead | @regexp_lookbehind;
+@regexp_anchor = @regexp_dollar | @regexp_caret;
+
+is_greedy (int id: @regexp_quantifier ref);
+range_quantifier_lower_bound (unique int id: @regexp_range ref, int lo: int ref);
+range_quantifier_upper_bound (unique int id: @regexp_range ref, int hi: int ref);
+is_capture (unique int id: @regexp_group ref, int number: int ref);
+is_named_capture (unique int id: @regexp_group ref, string name: string ref);
+is_inverted (int id: @regexp_char_class ref);
+regexp_const_value (unique int id: @regexp_constant ref, varchar(1) value: string ref);
+char_class_escape (unique int id: @regexp_char_class_escape ref, varchar(1) value: string ref);
+backref (unique int id: @regexp_backref ref, int value: int ref);
+named_backref (unique int id: @regexp_backref ref, string name: string ref);
+unicode_property_escapename (unique int id: @regexp_unicode_property_escape ref, string name: string ref);
+unicode_property_escapevalue (unique int id: @regexp_unicode_property_escape ref, string value: string ref);
+
+// tokens
+#keyset[toplevel, idx]
+tokeninfo (unique int id: @token,
+    int kind: int ref,
+    int toplevel: @toplevel ref,
+    int idx: int ref,
+    varchar(900) value: string ref);
+
+case @token.kind of
+  0 = @token_eof
+| 1 = @token_null_literal
+| 2 = @token_boolean_literal
+| 3 = @token_numeric_literal
+| 4 = @token_string_literal
+| 5 = @token_regular_expression
+| 6 = @token_identifier
+| 7 = @token_keyword
+| 8 = @token_punctuator;
+
+// associate comments with the token immediately following them (which may be EOF)
+next_token (int comment: @comment ref, int token: @token ref);
+
+// JSON
+#keyset[parent, idx]
+json (unique int id: @json_value,
+      int kind: int ref,
+      int parent: @json_parent ref,
+      int idx: int ref,
+      varchar(900) tostring: string ref);
+
+json_literals (varchar(900) value: string ref,
+      varchar(900) raw: string ref,
+      unique int expr: @json_value ref);
+
+json_properties (int obj: @json_object ref,
+      varchar(900) property: string ref,
+      int value: @json_value ref);
+
+json_errors (unique int id: @json_parse_error,
+      varchar(900) message: string ref);
+
+json_locations(unique int locatable: @json_locatable ref,
+      int location: @location_default ref);
+
+case @json_value.kind of
+  0 = @json_null
+| 1 = @json_boolean
+| 2 = @json_number
+| 3 = @json_string
+| 4 = @json_array
+| 5 = @json_object;
+
+@json_parent = @json_object | @json_array | @file;
+
+@json_locatable = @json_value | @json_parse_error;
+
+// locations
+@ast_node = @toplevel | @stmt | @expr | @property | @typeexpr;
+
+@locatable = @file
+    | @ast_node
+    | @comment
+    | @line
+    | @js_parse_error | @regexp_parse_error
+    | @regexpterm
+    | @json_locatable
+    | @token
+    | @cfg_node
+    | @jsdoc | @jsdoc_type_expr | @jsdoc_tag
+    | @yaml_locatable
+    | @xmllocatable
+    | @configLocatable
+    | @template_placeholder_tag;
+
+hasLocation (unique int locatable: @locatable ref,
+    int location: @location ref);
+
+// CFG
+entry_cfg_node (unique int id: @entry_node, int container: @stmt_container ref);
+exit_cfg_node (unique int id: @exit_node, int container: @stmt_container ref);
+guard_node (unique int id: @guard_node, int kind: int ref, int test: @expr ref);
+case @guard_node.kind of
+  0 = @falsy_guard
+| 1 = @truthy_guard;
+@condition_guard = @falsy_guard | @truthy_guard;
+
+@synthetic_cfg_node = @entry_node | @exit_node | @guard_node;
+@cfg_node = @synthetic_cfg_node | @expr_parent;
+
+successor (int pred: @cfg_node ref, int succ: @cfg_node ref);
+
+// JSDoc comments
+jsdoc (unique int id: @jsdoc, varchar(900) description: string ref, int comment: @comment ref);
+#keyset[parent, idx]
+jsdoc_tags (unique int id: @jsdoc_tag, varchar(900) title: string ref,
+            int parent: @jsdoc ref, int idx: int ref, varchar(900) tostring: string ref);
+jsdoc_tag_descriptions (unique int tag: @jsdoc_tag ref, varchar(900) text: string ref);
+jsdoc_tag_names (unique int tag: @jsdoc_tag ref, varchar(900) text: string ref);
+
+#keyset[parent, idx]
+jsdoc_type_exprs (unique int id: @jsdoc_type_expr,
+                  int kind: int ref,
+                  int parent: @jsdoc_type_expr_parent ref,
+                  int idx: int ref,
+                  varchar(900) tostring: string ref);
+case @jsdoc_type_expr.kind of
+    0 = @jsdoc_any_type_expr
+|   1 = @jsdoc_null_type_expr
+|   2 = @jsdoc_undefined_type_expr
+|   3 = @jsdoc_unknown_type_expr
+|   4 = @jsdoc_void_type_expr
+|   5 = @jsdoc_identifier_type_expr
+|   6 = @jsdoc_applied_type_expr
+|   7 = @jsdoc_nullable_type_expr
+|   8 = @jsdoc_non_nullable_type_expr
+|   9 = @jsdoc_record_type_expr
+|  10 = @jsdoc_array_type_expr
+|  11 = @jsdoc_union_type_expr
+|  12 = @jsdoc_function_type_expr
+|  13 = @jsdoc_optional_type_expr
+|  14 = @jsdoc_rest_type_expr
+|  15 = @jsdoc_qualified_type_expr
+;
+
+#keyset[id, idx]
+jsdoc_record_field_name (int id: @jsdoc_record_type_expr ref, int idx: int ref, varchar(900) name: string ref);
+jsdoc_prefix_qualifier (int id: @jsdoc_type_expr ref);
+jsdoc_has_new_parameter (int fn: @jsdoc_function_type_expr ref);
+
+@jsdoc_type_expr_parent = @jsdoc_type_expr | @jsdoc_tag;
+
+jsdoc_errors (unique int id: @jsdoc_error, int tag: @jsdoc_tag ref, varchar(900) message: string ref, varchar(900) tostring: string ref);
+
+@dataflownode = @expr | @function_decl_stmt | @class_decl_stmt | @namespace_declaration | @enum_declaration | @property;
+
+@optionalchainable = @call_expr | @propaccess;
+
+isOptionalChaining(int id: @optionalchainable ref);
+
+/**
+ * The time taken for the extraction of a file.
+ * This table contains non-deterministic content.
+ *
+ * The sum of the `time` column for each (`file`, `timerKind`) pair
+ * is the total time taken for extraction of `file`.  The `extractionPhase`
+ * column provides a granular view of the extraction time of the file.
+ */
+extraction_time(
+  int file : @file ref,
+  // see `com.semmle.js.extractor.ExtractionMetrics.ExtractionPhase`.
+  int extractionPhase: int ref,
+  // 0 for the elapsed CPU time in nanoseconds, 1 for the elapsed wallclock time in nanoseconds
+  int timerKind: int ref,
+  float time: float ref
+)
+
+/**
+* Non-timing related data for the extraction of a single file.
+* This table contains non-deterministic content.
+*/
+extraction_data(
+  int file : @file ref,
+  // the absolute path to the cache file
+  varchar(900) cacheFile: string ref,
+  boolean fromCache: boolean ref,
+  int length: int ref
+)
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
+
+/*- Configuration files with key value pairs -*/
+
+configs(
+  unique int id: @config
+);
+
+configNames(
+  unique int id: @configName,
+  int config: @config ref,
+  string name: string ref
+);
+
+configValues(
+  unique int id: @configValue,
+  int config: @config ref,
+  string value: string ref
+);
+
+configLocations(
+  int locatable: @configLocatable ref,
+  int location: @location_default ref
+);
+
+@configLocatable = @config | @configName | @configValue;
+
+/*- Database metadata -*/
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+overlayChangedFiles(
+  string path: string ref
+);
diff --git a/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/upgrade.properties b/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/javascript/downgrades/578367e82a25a3e286aaf1238613db3717b67476/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/javascript/ql/lib/semmlecode.javascript.dbscheme b/javascript/ql/lib/semmlecode.javascript.dbscheme
index 80b2bc241893..578367e82a25 100644
--- a/javascript/ql/lib/semmlecode.javascript.dbscheme
+++ b/javascript/ql/lib/semmlecode.javascript.dbscheme
@@ -1195,11 +1195,23 @@ configLocations(
 @configLocatable = @config | @configName | @configValue;
 
 /*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
 databaseMetadata(
   string metadataKey: string ref,
   string value: string ref
 );
 
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
 overlayChangedFiles(
   string path: string ref
 );
diff --git a/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/old.dbscheme b/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/old.dbscheme
new file mode 100644
index 000000000000..80b2bc241893
--- /dev/null
+++ b/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/old.dbscheme
@@ -0,0 +1,1205 @@
+/*** Standard fragments ***/
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- JavaScript-specific part -*/
+
+@location = @location_default
+
+@sourceline = @locatable;
+
+filetype(
+  int file: @file ref,
+  string filetype: string ref
+)
+
+// top-level code fragments
+toplevels (unique int id: @toplevel,
+           int kind: int ref);
+
+is_externs (int toplevel: @toplevel ref);
+
+case @toplevel.kind of
+   0 = @script
+|  1 = @inline_script
+|  2 = @event_handler
+|  3 = @javascript_url
+|  4 = @template_toplevel;
+
+is_module (int tl: @toplevel ref);
+is_nodejs (int tl: @toplevel ref);
+is_es2015_module (int tl: @toplevel ref);
+is_closure_module (int tl: @toplevel ref);
+
+@xml_node_with_code = @xmlelement | @xmlattribute | @template_placeholder_tag;
+toplevel_parent_xml_node(
+  unique int toplevel: @toplevel ref,
+  int xmlnode: @xml_node_with_code ref);
+
+xml_element_parent_expression(
+  unique int xmlnode: @xmlelement ref,
+  int expression: @expr ref,
+  int index: int ref);
+
+// statements
+#keyset[parent, idx]
+stmts (unique int id: @stmt,
+       int kind: int ref,
+       int parent: @stmt_parent ref,
+       int idx: int ref,
+       varchar(900) tostring: string ref);
+
+stmt_containers (unique int stmt: @stmt ref,
+       int container: @stmt_container ref);
+
+jump_targets (unique int jump: @stmt ref,
+       int target: @stmt ref);
+
+@stmt_parent = @stmt | @toplevel | @function_expr | @arrow_function_expr | @static_initializer;
+@stmt_container = @toplevel | @function | @namespace_declaration | @external_module_declaration | @global_augmentation_declaration;
+
+case @stmt.kind of
+   0 = @empty_stmt
+|  1 = @block_stmt
+|  2 = @expr_stmt
+|  3 = @if_stmt
+|  4 = @labeled_stmt
+|  5 = @break_stmt
+|  6 = @continue_stmt
+|  7 = @with_stmt
+|  8 = @switch_stmt
+|  9 = @return_stmt
+| 10 = @throw_stmt
+| 11 = @try_stmt
+| 12 = @while_stmt
+| 13 = @do_while_stmt
+| 14 = @for_stmt
+| 15 = @for_in_stmt
+| 16 = @debugger_stmt
+| 17 = @function_decl_stmt
+| 18 = @var_decl_stmt
+| 19 = @case
+| 20 = @catch_clause
+| 21 = @for_of_stmt
+| 22 = @const_decl_stmt
+| 23 = @let_stmt
+| 24 = @legacy_let_stmt
+| 25 = @for_each_stmt
+| 26 = @class_decl_stmt
+| 27 = @import_declaration
+| 28 = @export_all_declaration
+| 29 = @export_default_declaration
+| 30 = @export_named_declaration
+| 31 = @namespace_declaration
+| 32 = @import_equals_declaration
+| 33 = @export_assign_declaration
+| 34 = @interface_declaration
+| 35 = @type_alias_declaration
+| 36 = @enum_declaration
+| 37 = @external_module_declaration
+| 38 = @export_as_namespace_declaration
+| 39 = @global_augmentation_declaration
+| 40 = @using_decl_stmt
+;
+
+@decl_stmt = @var_decl_stmt | @const_decl_stmt | @let_stmt | @legacy_let_stmt | @using_decl_stmt;
+
+@export_declaration = @export_all_declaration | @export_default_declaration | @export_named_declaration;
+
+@namespace_definition = @namespace_declaration | @enum_declaration;
+@type_definition = @class_definition | @interface_declaration | @enum_declaration | @type_alias_declaration | @enum_member;
+
+is_instantiated(unique int decl: @namespace_declaration ref);
+
+@declarable_node = @decl_stmt | @namespace_declaration | @class_decl_stmt | @function_decl_stmt | @enum_declaration | @external_module_declaration | @global_augmentation_declaration | @field;
+has_declare_keyword(unique int stmt: @declarable_node ref);
+
+is_for_await_of(unique int forof: @for_of_stmt ref);
+
+// expressions
+#keyset[parent, idx]
+exprs (unique int id: @expr,
+       int kind: int ref,
+       int parent: @expr_parent ref,
+       int idx: int ref,
+       varchar(900) tostring: string ref);
+
+literals (varchar(900) value: string ref,
+       varchar(900) raw: string ref,
+       unique int expr: @expr_or_type ref);
+
+enclosing_stmt (unique int expr: @expr_or_type ref,
+       int stmt: @stmt ref);
+
+expr_containers (unique int expr: @expr_or_type ref,
+       int container: @stmt_container ref);
+
+array_size (unique int ae: @arraylike ref,
+       int sz: int ref);
+
+is_delegating (int yield: @yield_expr ref);
+
+@expr_or_stmt = @expr | @stmt;
+@expr_or_type = @expr | @typeexpr;
+@expr_parent = @expr_or_stmt | @property | @function_typeexpr;
+@arraylike = @array_expr | @array_pattern;
+@type_annotation = @typeexpr | @jsdoc_type_expr;
+@node_in_stmt_container = @cfg_node | @type_annotation | @toplevel;
+
+case @expr.kind of
+   0 = @label
+|  1 = @null_literal
+|  2 = @boolean_literal
+|  3 = @number_literal
+|  4 = @string_literal
+|  5 = @regexp_literal
+|  6 = @this_expr
+|  7 = @array_expr
+|  8 = @obj_expr
+|  9 = @function_expr
+| 10 = @seq_expr
+| 11 = @conditional_expr
+| 12 = @new_expr
+| 13 = @call_expr
+| 14 = @dot_expr
+| 15 = @index_expr
+| 16 = @neg_expr
+| 17 = @plus_expr
+| 18 = @log_not_expr
+| 19 = @bit_not_expr
+| 20 = @typeof_expr
+| 21 = @void_expr
+| 22 = @delete_expr
+| 23 = @eq_expr
+| 24 = @neq_expr
+| 25 = @eqq_expr
+| 26 = @neqq_expr
+| 27 = @lt_expr
+| 28 = @le_expr
+| 29 = @gt_expr
+| 30 = @ge_expr
+| 31 = @lshift_expr
+| 32 = @rshift_expr
+| 33 = @urshift_expr
+| 34 = @add_expr
+| 35 = @sub_expr
+| 36 = @mul_expr
+| 37 = @div_expr
+| 38 = @mod_expr
+| 39 = @bitor_expr
+| 40 = @xor_expr
+| 41 = @bitand_expr
+| 42 = @in_expr
+| 43 = @instanceof_expr
+| 44 = @logand_expr
+| 45 = @logor_expr
+| 47 = @assign_expr
+| 48 = @assign_add_expr
+| 49 = @assign_sub_expr
+| 50 = @assign_mul_expr
+| 51 = @assign_div_expr
+| 52 = @assign_mod_expr
+| 53 = @assign_lshift_expr
+| 54 = @assign_rshift_expr
+| 55 = @assign_urshift_expr
+| 56 = @assign_or_expr
+| 57 = @assign_xor_expr
+| 58 = @assign_and_expr
+| 59 = @preinc_expr
+| 60 = @postinc_expr
+| 61 = @predec_expr
+| 62 = @postdec_expr
+| 63 = @par_expr
+| 64 = @var_declarator
+| 65 = @arrow_function_expr
+| 66 = @spread_element
+| 67 = @array_pattern
+| 68 = @object_pattern
+| 69 = @yield_expr
+| 70 = @tagged_template_expr
+| 71 = @template_literal
+| 72 = @template_element
+| 73 = @array_comprehension_expr
+| 74 = @generator_expr
+| 75 = @for_in_comprehension_block
+| 76 = @for_of_comprehension_block
+| 77 = @legacy_letexpr
+| 78 = @var_decl
+| 79 = @proper_varaccess
+| 80 = @class_expr
+| 81 = @super_expr
+| 82 = @newtarget_expr
+| 83 = @named_import_specifier
+| 84 = @import_default_specifier
+| 85 = @import_namespace_specifier
+| 86 = @named_export_specifier
+| 87 = @exp_expr
+| 88 = @assign_exp_expr
+| 89 = @jsx_element
+| 90 = @jsx_qualified_name
+| 91 = @jsx_empty_expr
+| 92 = @await_expr
+| 93 = @function_sent_expr
+| 94 = @decorator
+| 95 = @export_default_specifier
+| 96 = @export_namespace_specifier
+| 97 = @bind_expr
+| 98 = @external_module_reference
+| 99 = @dynamic_import
+| 100 = @expression_with_type_arguments
+| 101 = @prefix_type_assertion
+| 102 = @as_type_assertion
+| 103 = @export_varaccess
+| 104 = @decorator_list
+| 105 = @non_null_assertion
+| 106 = @bigint_literal
+| 107 = @nullishcoalescing_expr
+| 108 = @e4x_xml_anyname
+| 109 = @e4x_xml_static_attribute_selector
+| 110 = @e4x_xml_dynamic_attribute_selector
+| 111 = @e4x_xml_filter_expression
+| 112 = @e4x_xml_static_qualident
+| 113 = @e4x_xml_dynamic_qualident
+| 114 = @e4x_xml_dotdotexpr
+| 115 = @import_meta_expr
+| 116 = @assignlogandexpr
+| 117 = @assignlogorexpr
+| 118 = @assignnullishcoalescingexpr
+| 119 = @template_pipe_ref
+| 120 = @generated_code_expr
+| 121 = @satisfies_expr
+;
+
+@varaccess = @proper_varaccess | @export_varaccess;
+@varref = @var_decl | @varaccess;
+
+@identifier = @label | @varref | @type_identifier;
+
+@literal = @null_literal | @boolean_literal | @number_literal | @string_literal | @regexp_literal | @bigint_literal;
+
+@propaccess = @dot_expr | @index_expr;
+
+@invokeexpr = @new_expr | @call_expr;
+
+@unaryexpr = @neg_expr | @plus_expr | @log_not_expr | @bit_not_expr | @typeof_expr | @void_expr | @delete_expr | @spread_element;
+
+@equality_test = @eq_expr | @neq_expr | @eqq_expr | @neqq_expr;
+
+@comparison = @equality_test | @lt_expr | @le_expr | @gt_expr | @ge_expr;
+
+@binaryexpr = @comparison | @lshift_expr | @rshift_expr | @urshift_expr | @add_expr | @sub_expr | @mul_expr | @div_expr | @mod_expr | @exp_expr | @bitor_expr | @xor_expr | @bitand_expr | @in_expr | @instanceof_expr | @logand_expr | @logor_expr | @nullishcoalescing_expr;
+
+@assignment = @assign_expr | @assign_add_expr | @assign_sub_expr | @assign_mul_expr | @assign_div_expr | @assign_mod_expr | @assign_exp_expr | @assign_lshift_expr | @assign_rshift_expr | @assign_urshift_expr | @assign_or_expr | @assign_xor_expr | @assign_and_expr | @assignlogandexpr | @assignlogorexpr | @assignnullishcoalescingexpr;
+
+@updateexpr = @preinc_expr | @postinc_expr | @predec_expr | @postdec_expr;
+
+@pattern = @varref | @array_pattern | @object_pattern;
+
+@comprehension_expr = @array_comprehension_expr | @generator_expr;
+
+@comprehension_block = @for_in_comprehension_block | @for_of_comprehension_block;
+
+@import_specifier = @named_import_specifier | @import_default_specifier | @import_namespace_specifier;
+
+@exportspecifier = @named_export_specifier | @export_default_specifier | @export_namespace_specifier;
+
+@type_keyword_operand = @import_declaration | @export_declaration | @import_specifier;
+
+@type_assertion = @as_type_assertion | @prefix_type_assertion;
+
+@class_definition = @class_decl_stmt | @class_expr;
+@interface_definition = @interface_declaration | @interface_typeexpr;
+@class_or_interface = @class_definition | @interface_definition;
+
+@lexical_decl = @var_decl | @type_decl;
+@lexical_access = @varaccess | @local_type_access | @local_var_type_access | @local_namespace_access;
+@lexical_ref = @lexical_decl | @lexical_access;
+
+@e4x_xml_attribute_selector = @e4x_xml_static_attribute_selector | @e4x_xml_dynamic_attribute_selector;
+@e4x_xml_qualident = @e4x_xml_static_qualident | @e4x_xml_dynamic_qualident;
+
+expr_contains_template_tag_location(
+  int expr: @expr ref,
+  int location: @location ref
+);
+
+@template_placeholder_tag_parent = @xmlelement | @xmlattribute | @file;
+
+template_placeholder_tag_info(
+  unique int node: @template_placeholder_tag,
+  int parentNode: @template_placeholder_tag_parent ref,
+  varchar(900) raw: string ref
+);
+
+// scopes
+scopes (unique int id: @scope,
+        int kind: int ref);
+
+case @scope.kind of
+   0 = @global_scope
+|  1 = @function_scope
+|  2 = @catch_scope
+|  3 = @module_scope
+|  4 = @block_scope
+|  5 = @for_scope
+|  6 = @for_in_scope // for-of scopes work the same as for-in scopes
+|  7 = @comprehension_block_scope
+|  8 = @class_expr_scope
+|  9 = @namespace_scope
+| 10 = @class_decl_scope
+| 11 = @interface_scope
+| 12 = @type_alias_scope
+| 13 = @mapped_type_scope
+| 14 = @enum_scope
+| 15 = @external_module_scope
+| 16 = @conditional_type_scope;
+
+scopenodes (unique int node: @ast_node ref,
+            int scope: @scope ref);
+
+scopenesting (unique int inner: @scope ref,
+              int outer: @scope ref);
+
+// functions
+@function = @function_decl_stmt | @function_expr | @arrow_function_expr;
+
+@parameterized = @function | @catch_clause;
+@type_parameterized = @function | @class_or_interface | @type_alias_declaration | @mapped_typeexpr | @infer_typeexpr;
+
+is_generator (int fun: @function ref);
+has_rest_parameter (int fun: @function ref);
+is_async (int fun: @function ref);
+
+// variables and lexically scoped type names
+#keyset[scope, name]
+variables (unique int id: @variable,
+           varchar(900) name: string ref,
+           int scope: @scope ref);
+
+#keyset[scope, name]
+local_type_names (unique int id: @local_type_name,
+                  varchar(900) name: string ref,
+                  int scope: @scope ref);
+
+#keyset[scope, name]
+local_namespace_names (unique int id: @local_namespace_name,
+                       varchar(900) name: string ref,
+                       int scope: @scope ref);
+
+is_arguments_object (int id: @variable ref);
+
+@lexical_name = @variable | @local_type_name | @local_namespace_name;
+
+@bind_id = @varaccess | @local_var_type_access;
+bind (unique int id: @bind_id ref,
+      int decl: @variable ref);
+
+decl (unique int id: @var_decl ref,
+      int decl: @variable ref);
+
+@typebind_id = @local_type_access | @export_varaccess;
+typebind (unique int id: @typebind_id ref,
+          int decl: @local_type_name ref);
+
+@typedecl_id = @type_decl | @var_decl;
+typedecl (unique int id: @typedecl_id ref,
+          int decl: @local_type_name ref);
+
+namespacedecl (unique int id: @var_decl ref,
+               int decl: @local_namespace_name ref);
+
+@namespacebind_id = @local_namespace_access | @export_varaccess;
+namespacebind (unique int id: @namespacebind_id ref,
+               int decl: @local_namespace_name ref);
+
+
+// properties in object literals, property patterns in object patterns, and method declarations in classes
+#keyset[parent, index]
+properties (unique int id: @property,
+            int parent: @property_parent ref,
+            int index: int ref,
+            int kind: int ref,
+            varchar(900) tostring: string ref);
+
+case @property.kind of
+  0 = @value_property
+| 1 = @property_getter
+| 2 = @property_setter
+| 3 = @jsx_attribute
+| 4 = @function_call_signature
+| 5 = @constructor_call_signature
+| 6 = @index_signature
+| 7 = @enum_member
+| 8 = @proper_field
+| 9 = @parameter_field
+| 10 = @static_initializer
+;
+
+@property_parent = @obj_expr | @object_pattern | @class_definition | @jsx_element | @interface_definition | @enum_declaration;
+@property_accessor = @property_getter | @property_setter;
+@call_signature = @function_call_signature | @constructor_call_signature;
+@field = @proper_field | @parameter_field;
+@field_or_vardeclarator = @field | @var_declarator;
+
+is_computed (int id: @property ref);
+is_method   (int id: @property ref);
+is_static   (int id: @property ref);
+is_abstract_member (int id: @property ref);
+is_const_enum (int id: @enum_declaration ref);
+is_abstract_class (int id: @class_decl_stmt ref);
+
+has_public_keyword (int id: @property ref);
+has_private_keyword (int id: @property ref);
+has_protected_keyword (int id: @property ref);
+has_readonly_keyword (int id: @property ref);
+has_type_keyword (int id: @type_keyword_operand ref);
+has_defer_keyword (int id: @import_declaration ref);
+is_optional_member (int id: @property ref);
+has_definite_assignment_assertion (int id: @field_or_vardeclarator ref);
+is_optional_parameter_declaration (unique int parameter: @pattern ref);
+
+#keyset[constructor, param_index]
+parameter_fields(
+  unique int field: @parameter_field ref,
+  int constructor: @function_expr ref,
+  int param_index: int ref
+);
+
+// types
+#keyset[parent, idx]
+typeexprs (
+  unique int id: @typeexpr,
+  int kind: int ref,
+  int parent: @typeexpr_parent ref,
+  int idx: int ref,
+  varchar(900) tostring: string ref
+);
+
+case @typeexpr.kind of
+  0 = @local_type_access
+| 1 = @type_decl
+| 2 = @keyword_typeexpr
+| 3 = @string_literal_typeexpr
+| 4 = @number_literal_typeexpr
+| 5 = @boolean_literal_typeexpr
+| 6 = @array_typeexpr
+| 7 = @union_typeexpr
+| 8 = @indexed_access_typeexpr
+| 9 = @intersection_typeexpr
+| 10 = @parenthesized_typeexpr
+| 11 = @tuple_typeexpr
+| 12 = @keyof_typeexpr
+| 13 = @qualified_type_access
+| 14 = @generic_typeexpr
+| 15 = @type_label
+| 16 = @typeof_typeexpr
+| 17 = @local_var_type_access
+| 18 = @qualified_var_type_access
+| 19 = @this_var_type_access
+| 20 = @predicate_typeexpr
+| 21 = @interface_typeexpr
+| 22 = @type_parameter
+| 23 = @plain_function_typeexpr
+| 24 = @constructor_typeexpr
+| 25 = @local_namespace_access
+| 26 = @qualified_namespace_access
+| 27 = @mapped_typeexpr
+| 28 = @conditional_typeexpr
+| 29 = @infer_typeexpr
+| 30 = @import_type_access
+| 31 = @import_namespace_access
+| 32 = @import_var_type_access
+| 33 = @optional_typeexpr
+| 34 = @rest_typeexpr
+| 35 = @bigint_literal_typeexpr
+| 36 = @readonly_typeexpr
+| 37 = @template_literal_typeexpr
+;
+
+@typeref = @typeaccess | @type_decl;
+@type_identifier = @type_decl | @local_type_access | @type_label | @local_var_type_access | @local_namespace_access;
+@typeexpr_parent = @expr | @stmt | @property | @typeexpr;
+@literal_typeexpr = @string_literal_typeexpr | @number_literal_typeexpr | @boolean_literal_typeexpr | @bigint_literal_typeexpr;
+@typeaccess = @local_type_access | @qualified_type_access | @import_type_access;
+@vartypeaccess = @local_var_type_access | @qualified_var_type_access | @this_var_type_access | @import_var_type_access;
+@namespace_access = @local_namespace_access | @qualified_namespace_access | @import_namespace_access;
+@import_typeexpr = @import_type_access | @import_namespace_access | @import_var_type_access;
+
+@function_typeexpr = @plain_function_typeexpr | @constructor_typeexpr;
+
+// types
+types (
+  unique int id: @type,
+  int kind: int ref,
+  varchar(900) tostring: string ref
+);
+
+#keyset[parent, idx]
+type_child (
+  int child: @type ref,
+  int parent: @type ref,
+  int idx: int ref
+);
+
+case @type.kind of
+  0 = @any_type
+| 1 = @string_type
+| 2 = @number_type
+| 3 = @union_type
+| 4 = @true_type
+| 5 = @false_type
+| 6 = @type_reference
+| 7 = @object_type
+| 8 = @canonical_type_variable_type
+| 9 = @typeof_type
+| 10 = @void_type
+| 11 = @undefined_type
+| 12 = @null_type
+| 13 = @never_type
+| 14 = @plain_symbol_type
+| 15 = @unique_symbol_type
+| 16 = @objectkeyword_type
+| 17 = @intersection_type
+| 18 = @tuple_type
+| 19 = @lexical_type_variable_type
+| 20 = @this_type
+| 21 = @number_literal_type
+| 22 = @string_literal_type
+| 23 = @unknown_type
+| 24 = @bigint_type
+| 25 = @bigint_literal_type
+;
+
+@boolean_literal_type = @true_type | @false_type;
+@symbol_type = @plain_symbol_type | @unique_symbol_type;
+@union_or_intersection_type = @union_type | @intersection_type;
+@typevariable_type = @canonical_type_variable_type | @lexical_type_variable_type;
+
+has_asserts_keyword(int node: @predicate_typeexpr ref);
+
+@typed_ast_node = @expr | @typeexpr | @function;
+ast_node_type(
+  unique int node: @typed_ast_node ref,
+  int typ: @type ref);
+
+declared_function_signature(
+  unique int node: @function ref,
+  int sig: @signature_type ref
+);
+
+invoke_expr_signature(
+  unique int node: @invokeexpr ref,
+  int sig: @signature_type ref
+);
+
+invoke_expr_overload_index(
+  unique int node: @invokeexpr ref,
+  int index: int ref
+);
+
+symbols (
+  unique int id: @symbol,
+  int kind: int ref,
+  varchar(900) name: string ref
+);
+
+symbol_parent (
+  unique int symbol: @symbol ref,
+  int parent: @symbol ref
+);
+
+symbol_module (
+  int symbol: @symbol ref,
+  varchar(900) moduleName: string ref
+);
+
+symbol_global (
+  int symbol: @symbol ref,
+  varchar(900) globalName: string ref
+);
+
+case @symbol.kind of
+  0 = @root_symbol
+| 1 = @member_symbol
+| 2 = @other_symbol
+;
+
+@type_with_symbol = @type_reference | @typevariable_type | @typeof_type | @unique_symbol_type;
+@ast_node_with_symbol = @type_definition | @namespace_definition | @toplevel | @typeaccess | @namespace_access | @var_decl | @function | @invokeexpr | @import_declaration | @external_module_reference | @external_module_declaration;
+
+ast_node_symbol(
+  unique int node: @ast_node_with_symbol ref,
+  int symbol: @symbol ref);
+
+type_symbol(
+  unique int typ: @type_with_symbol ref,
+  int symbol: @symbol ref);
+
+#keyset[typ, name]
+type_property(
+  int typ: @type ref,
+  varchar(900) name: string ref,
+  int propertyType: @type ref);
+
+type_alias(
+  unique int aliasType: @type ref,
+  int underlyingType: @type ref);
+
+@literal_type = @string_literal_type | @number_literal_type | @boolean_literal_type | @bigint_literal_type;
+@type_with_literal_value = @string_literal_type | @number_literal_type | @bigint_literal_type;
+type_literal_value(
+  unique int typ: @type_with_literal_value ref,
+  varchar(900) value: string ref);
+
+signature_types (
+  unique int id: @signature_type,
+  int kind: int ref,
+  varchar(900) tostring: string ref,
+  int type_parameters: int ref,
+  int required_params: int ref
+);
+
+is_abstract_signature(
+  unique int sig: @signature_type ref
+);
+
+signature_rest_parameter(
+  unique int sig: @signature_type ref,
+  int rest_param_arra_type: @type ref
+);
+
+case @signature_type.kind of
+  0 = @function_signature_type
+| 1 = @constructor_signature_type
+;
+
+#keyset[typ, kind, index]
+type_contains_signature (
+  int typ: @type ref,
+  int kind: int ref,  // constructor/call/index
+  int index: int ref, // ordering of overloaded signatures
+  int sig: @signature_type ref
+);
+
+#keyset[parent, index]
+signature_contains_type (
+  int child: @type ref,
+  int parent: @signature_type ref,
+  int index: int ref
+);
+
+#keyset[sig, index]
+signature_parameter_name (
+  int sig: @signature_type ref,
+  int index: int ref,
+  varchar(900) name: string ref
+);
+
+number_index_type (
+  unique int baseType: @type ref,
+  int propertyType: @type ref
+);
+
+string_index_type (
+  unique int baseType: @type ref,
+  int propertyType: @type ref
+);
+
+base_type_names(
+  int typeName: @symbol ref,
+  int baseTypeName: @symbol ref
+);
+
+self_types(
+  int typeName: @symbol ref,
+  int selfType: @type_reference ref
+);
+
+tuple_type_min_length(
+  unique int typ: @type ref,
+  int minLength: int ref
+);
+
+tuple_type_rest_index(
+  unique int typ: @type ref,
+  int index: int ref
+);
+
+// comments
+comments (unique int id: @comment,
+          int kind: int ref,
+          int toplevel: @toplevel ref,
+          varchar(900) text: string ref,
+          varchar(900) tostring: string ref);
+
+case @comment.kind of
+  0 = @slashslash_comment
+| 1 = @slashstar_comment
+| 2 = @doc_comment
+| 3 = @html_comment_start
+| 4 = @htmlcommentend;
+
+@html_comment = @html_comment_start | @htmlcommentend;
+@line_comment = @slashslash_comment | @html_comment;
+@block_comment = @slashstar_comment | @doc_comment;
+
+// source lines
+lines (unique int id: @line,
+       int toplevel: @toplevel ref,
+       varchar(900) text: string ref,
+       varchar(2) terminator: string ref);
+indentation (int file: @file ref,
+            int lineno: int ref,
+            varchar(1) indentChar: string ref,
+            int indentDepth: int ref);
+
+// JavaScript parse errors
+js_parse_errors (unique int id: @js_parse_error,
+        int toplevel: @toplevel ref,
+        varchar(900) message: string ref,
+        varchar(900) line: string ref);
+
+// regular expressions
+#keyset[parent, idx]
+regexpterm (unique int id: @regexpterm,
+        int kind: int ref,
+        int parent: @regexpparent ref,
+        int idx: int ref,
+        varchar(900) tostring: string ref);
+
+@regexpparent = @regexpterm | @regexp_literal | @string_literal | @add_expr;
+
+case @regexpterm.kind of
+   0 = @regexp_alt
+|  1 = @regexp_seq
+|  2 = @regexp_caret
+|  3 = @regexp_dollar
+|  4 = @regexp_wordboundary
+|  5 = @regexp_nonwordboundary
+|  6 = @regexp_positive_lookahead
+|  7 = @regexp_negative_lookahead
+|  8 = @regexp_star
+|  9 = @regexp_plus
+| 10 = @regexp_opt
+| 11 = @regexp_range
+| 12 = @regexp_dot
+| 13 = @regexp_group
+| 14 = @regexp_normal_constant
+| 15 = @regexp_hex_escape
+| 16 = @regexp_unicode_escape
+| 17 = @regexp_dec_escape
+| 18 = @regexp_oct_escape
+| 19 = @regexp_ctrl_escape
+| 20 = @regexp_char_class_escape
+| 21 = @regexp_id_escape
+| 22 = @regexp_backref
+| 23 = @regexp_char_class
+| 24 = @regexp_char_range
+| 25 = @regexp_positive_lookbehind
+| 26 = @regexp_negative_lookbehind
+| 27 = @regexp_unicode_property_escape
+| 28 = @regexp_quoted_string
+| 29 = @regexp_intersection
+| 30 = @regexp_subtraction;
+
+regexp_parse_errors (unique int id: @regexp_parse_error,
+    int regexp: @regexpterm ref,
+    varchar(900) message: string ref);
+
+@regexp_quantifier = @regexp_star | @regexp_plus | @regexp_opt | @regexp_range;
+@regexp_escape = @regexp_char_escape | @regexp_char_class_escape | @regexp_unicode_property_escape;
+@regexp_char_escape = @regexp_hex_escape | @regexp_unicode_escape | @regexp_dec_escape | @regexp_oct_escape | @regexp_ctrl_escape | @regexp_id_escape;
+@regexp_constant = @regexp_normal_constant | @regexp_char_escape;
+@regexp_lookahead = @regexp_positive_lookahead | @regexp_negative_lookahead;
+@regexp_lookbehind = @regexp_positive_lookbehind | @regexp_negative_lookbehind;
+@regexp_subpattern = @regexp_lookahead | @regexp_lookbehind;
+@regexp_anchor = @regexp_dollar | @regexp_caret;
+
+is_greedy (int id: @regexp_quantifier ref);
+range_quantifier_lower_bound (unique int id: @regexp_range ref, int lo: int ref);
+range_quantifier_upper_bound (unique int id: @regexp_range ref, int hi: int ref);
+is_capture (unique int id: @regexp_group ref, int number: int ref);
+is_named_capture (unique int id: @regexp_group ref, string name: string ref);
+is_inverted (int id: @regexp_char_class ref);
+regexp_const_value (unique int id: @regexp_constant ref, varchar(1) value: string ref);
+char_class_escape (unique int id: @regexp_char_class_escape ref, varchar(1) value: string ref);
+backref (unique int id: @regexp_backref ref, int value: int ref);
+named_backref (unique int id: @regexp_backref ref, string name: string ref);
+unicode_property_escapename (unique int id: @regexp_unicode_property_escape ref, string name: string ref);
+unicode_property_escapevalue (unique int id: @regexp_unicode_property_escape ref, string value: string ref);
+
+// tokens
+#keyset[toplevel, idx]
+tokeninfo (unique int id: @token,
+    int kind: int ref,
+    int toplevel: @toplevel ref,
+    int idx: int ref,
+    varchar(900) value: string ref);
+
+case @token.kind of
+  0 = @token_eof
+| 1 = @token_null_literal
+| 2 = @token_boolean_literal
+| 3 = @token_numeric_literal
+| 4 = @token_string_literal
+| 5 = @token_regular_expression
+| 6 = @token_identifier
+| 7 = @token_keyword
+| 8 = @token_punctuator;
+
+// associate comments with the token immediately following them (which may be EOF)
+next_token (int comment: @comment ref, int token: @token ref);
+
+// JSON
+#keyset[parent, idx]
+json (unique int id: @json_value,
+      int kind: int ref,
+      int parent: @json_parent ref,
+      int idx: int ref,
+      varchar(900) tostring: string ref);
+
+json_literals (varchar(900) value: string ref,
+      varchar(900) raw: string ref,
+      unique int expr: @json_value ref);
+
+json_properties (int obj: @json_object ref,
+      varchar(900) property: string ref,
+      int value: @json_value ref);
+
+json_errors (unique int id: @json_parse_error,
+      varchar(900) message: string ref);
+
+json_locations(unique int locatable: @json_locatable ref,
+      int location: @location_default ref);
+
+case @json_value.kind of
+  0 = @json_null
+| 1 = @json_boolean
+| 2 = @json_number
+| 3 = @json_string
+| 4 = @json_array
+| 5 = @json_object;
+
+@json_parent = @json_object | @json_array | @file;
+
+@json_locatable = @json_value | @json_parse_error;
+
+// locations
+@ast_node = @toplevel | @stmt | @expr | @property | @typeexpr;
+
+@locatable = @file
+    | @ast_node
+    | @comment
+    | @line
+    | @js_parse_error | @regexp_parse_error
+    | @regexpterm
+    | @json_locatable
+    | @token
+    | @cfg_node
+    | @jsdoc | @jsdoc_type_expr | @jsdoc_tag
+    | @yaml_locatable
+    | @xmllocatable
+    | @configLocatable
+    | @template_placeholder_tag;
+
+hasLocation (unique int locatable: @locatable ref,
+    int location: @location ref);
+
+// CFG
+entry_cfg_node (unique int id: @entry_node, int container: @stmt_container ref);
+exit_cfg_node (unique int id: @exit_node, int container: @stmt_container ref);
+guard_node (unique int id: @guard_node, int kind: int ref, int test: @expr ref);
+case @guard_node.kind of
+  0 = @falsy_guard
+| 1 = @truthy_guard;
+@condition_guard = @falsy_guard | @truthy_guard;
+
+@synthetic_cfg_node = @entry_node | @exit_node | @guard_node;
+@cfg_node = @synthetic_cfg_node | @expr_parent;
+
+successor (int pred: @cfg_node ref, int succ: @cfg_node ref);
+
+// JSDoc comments
+jsdoc (unique int id: @jsdoc, varchar(900) description: string ref, int comment: @comment ref);
+#keyset[parent, idx]
+jsdoc_tags (unique int id: @jsdoc_tag, varchar(900) title: string ref,
+            int parent: @jsdoc ref, int idx: int ref, varchar(900) tostring: string ref);
+jsdoc_tag_descriptions (unique int tag: @jsdoc_tag ref, varchar(900) text: string ref);
+jsdoc_tag_names (unique int tag: @jsdoc_tag ref, varchar(900) text: string ref);
+
+#keyset[parent, idx]
+jsdoc_type_exprs (unique int id: @jsdoc_type_expr,
+                  int kind: int ref,
+                  int parent: @jsdoc_type_expr_parent ref,
+                  int idx: int ref,
+                  varchar(900) tostring: string ref);
+case @jsdoc_type_expr.kind of
+    0 = @jsdoc_any_type_expr
+|   1 = @jsdoc_null_type_expr
+|   2 = @jsdoc_undefined_type_expr
+|   3 = @jsdoc_unknown_type_expr
+|   4 = @jsdoc_void_type_expr
+|   5 = @jsdoc_identifier_type_expr
+|   6 = @jsdoc_applied_type_expr
+|   7 = @jsdoc_nullable_type_expr
+|   8 = @jsdoc_non_nullable_type_expr
+|   9 = @jsdoc_record_type_expr
+|  10 = @jsdoc_array_type_expr
+|  11 = @jsdoc_union_type_expr
+|  12 = @jsdoc_function_type_expr
+|  13 = @jsdoc_optional_type_expr
+|  14 = @jsdoc_rest_type_expr
+|  15 = @jsdoc_qualified_type_expr
+;
+
+#keyset[id, idx]
+jsdoc_record_field_name (int id: @jsdoc_record_type_expr ref, int idx: int ref, varchar(900) name: string ref);
+jsdoc_prefix_qualifier (int id: @jsdoc_type_expr ref);
+jsdoc_has_new_parameter (int fn: @jsdoc_function_type_expr ref);
+
+@jsdoc_type_expr_parent = @jsdoc_type_expr | @jsdoc_tag;
+
+jsdoc_errors (unique int id: @jsdoc_error, int tag: @jsdoc_tag ref, varchar(900) message: string ref, varchar(900) tostring: string ref);
+
+@dataflownode = @expr | @function_decl_stmt | @class_decl_stmt | @namespace_declaration | @enum_declaration | @property;
+
+@optionalchainable = @call_expr | @propaccess;
+
+isOptionalChaining(int id: @optionalchainable ref);
+
+/**
+ * The time taken for the extraction of a file.
+ * This table contains non-deterministic content.
+ *
+ * The sum of the `time` column for each (`file`, `timerKind`) pair
+ * is the total time taken for extraction of `file`.  The `extractionPhase`
+ * column provides a granular view of the extraction time of the file.
+ */
+extraction_time(
+  int file : @file ref,
+  // see `com.semmle.js.extractor.ExtractionMetrics.ExtractionPhase`.
+  int extractionPhase: int ref,
+  // 0 for the elapsed CPU time in nanoseconds, 1 for the elapsed wallclock time in nanoseconds
+  int timerKind: int ref,
+  float time: float ref
+)
+
+/**
+* Non-timing related data for the extraction of a single file.
+* This table contains non-deterministic content.
+*/
+extraction_data(
+  int file : @file ref,
+  // the absolute path to the cache file
+  varchar(900) cacheFile: string ref,
+  boolean fromCache: boolean ref,
+  int length: int ref
+)
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
+
+/*- Configuration files with key value pairs -*/
+
+configs(
+  unique int id: @config
+);
+
+configNames(
+  unique int id: @configName,
+  int config: @config ref,
+  string name: string ref
+);
+
+configValues(
+  unique int id: @configValue,
+  int config: @config ref,
+  string value: string ref
+);
+
+configLocations(
+  int locatable: @configLocatable ref,
+  int location: @location_default ref
+);
+
+@configLocatable = @config | @configName | @configValue;
+
+/*- Database metadata -*/
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+overlayChangedFiles(
+  string path: string ref
+);
diff --git a/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/semmlecode.javascript.dbscheme b/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/semmlecode.javascript.dbscheme
new file mode 100644
index 000000000000..578367e82a25
--- /dev/null
+++ b/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/semmlecode.javascript.dbscheme
@@ -0,0 +1,1217 @@
+/*** Standard fragments ***/
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- JavaScript-specific part -*/
+
+@location = @location_default
+
+@sourceline = @locatable;
+
+filetype(
+  int file: @file ref,
+  string filetype: string ref
+)
+
+// top-level code fragments
+toplevels (unique int id: @toplevel,
+           int kind: int ref);
+
+is_externs (int toplevel: @toplevel ref);
+
+case @toplevel.kind of
+   0 = @script
+|  1 = @inline_script
+|  2 = @event_handler
+|  3 = @javascript_url
+|  4 = @template_toplevel;
+
+is_module (int tl: @toplevel ref);
+is_nodejs (int tl: @toplevel ref);
+is_es2015_module (int tl: @toplevel ref);
+is_closure_module (int tl: @toplevel ref);
+
+@xml_node_with_code = @xmlelement | @xmlattribute | @template_placeholder_tag;
+toplevel_parent_xml_node(
+  unique int toplevel: @toplevel ref,
+  int xmlnode: @xml_node_with_code ref);
+
+xml_element_parent_expression(
+  unique int xmlnode: @xmlelement ref,
+  int expression: @expr ref,
+  int index: int ref);
+
+// statements
+#keyset[parent, idx]
+stmts (unique int id: @stmt,
+       int kind: int ref,
+       int parent: @stmt_parent ref,
+       int idx: int ref,
+       varchar(900) tostring: string ref);
+
+stmt_containers (unique int stmt: @stmt ref,
+       int container: @stmt_container ref);
+
+jump_targets (unique int jump: @stmt ref,
+       int target: @stmt ref);
+
+@stmt_parent = @stmt | @toplevel | @function_expr | @arrow_function_expr | @static_initializer;
+@stmt_container = @toplevel | @function | @namespace_declaration | @external_module_declaration | @global_augmentation_declaration;
+
+case @stmt.kind of
+   0 = @empty_stmt
+|  1 = @block_stmt
+|  2 = @expr_stmt
+|  3 = @if_stmt
+|  4 = @labeled_stmt
+|  5 = @break_stmt
+|  6 = @continue_stmt
+|  7 = @with_stmt
+|  8 = @switch_stmt
+|  9 = @return_stmt
+| 10 = @throw_stmt
+| 11 = @try_stmt
+| 12 = @while_stmt
+| 13 = @do_while_stmt
+| 14 = @for_stmt
+| 15 = @for_in_stmt
+| 16 = @debugger_stmt
+| 17 = @function_decl_stmt
+| 18 = @var_decl_stmt
+| 19 = @case
+| 20 = @catch_clause
+| 21 = @for_of_stmt
+| 22 = @const_decl_stmt
+| 23 = @let_stmt
+| 24 = @legacy_let_stmt
+| 25 = @for_each_stmt
+| 26 = @class_decl_stmt
+| 27 = @import_declaration
+| 28 = @export_all_declaration
+| 29 = @export_default_declaration
+| 30 = @export_named_declaration
+| 31 = @namespace_declaration
+| 32 = @import_equals_declaration
+| 33 = @export_assign_declaration
+| 34 = @interface_declaration
+| 35 = @type_alias_declaration
+| 36 = @enum_declaration
+| 37 = @external_module_declaration
+| 38 = @export_as_namespace_declaration
+| 39 = @global_augmentation_declaration
+| 40 = @using_decl_stmt
+;
+
+@decl_stmt = @var_decl_stmt | @const_decl_stmt | @let_stmt | @legacy_let_stmt | @using_decl_stmt;
+
+@export_declaration = @export_all_declaration | @export_default_declaration | @export_named_declaration;
+
+@namespace_definition = @namespace_declaration | @enum_declaration;
+@type_definition = @class_definition | @interface_declaration | @enum_declaration | @type_alias_declaration | @enum_member;
+
+is_instantiated(unique int decl: @namespace_declaration ref);
+
+@declarable_node = @decl_stmt | @namespace_declaration | @class_decl_stmt | @function_decl_stmt | @enum_declaration | @external_module_declaration | @global_augmentation_declaration | @field;
+has_declare_keyword(unique int stmt: @declarable_node ref);
+
+is_for_await_of(unique int forof: @for_of_stmt ref);
+
+// expressions
+#keyset[parent, idx]
+exprs (unique int id: @expr,
+       int kind: int ref,
+       int parent: @expr_parent ref,
+       int idx: int ref,
+       varchar(900) tostring: string ref);
+
+literals (varchar(900) value: string ref,
+       varchar(900) raw: string ref,
+       unique int expr: @expr_or_type ref);
+
+enclosing_stmt (unique int expr: @expr_or_type ref,
+       int stmt: @stmt ref);
+
+expr_containers (unique int expr: @expr_or_type ref,
+       int container: @stmt_container ref);
+
+array_size (unique int ae: @arraylike ref,
+       int sz: int ref);
+
+is_delegating (int yield: @yield_expr ref);
+
+@expr_or_stmt = @expr | @stmt;
+@expr_or_type = @expr | @typeexpr;
+@expr_parent = @expr_or_stmt | @property | @function_typeexpr;
+@arraylike = @array_expr | @array_pattern;
+@type_annotation = @typeexpr | @jsdoc_type_expr;
+@node_in_stmt_container = @cfg_node | @type_annotation | @toplevel;
+
+case @expr.kind of
+   0 = @label
+|  1 = @null_literal
+|  2 = @boolean_literal
+|  3 = @number_literal
+|  4 = @string_literal
+|  5 = @regexp_literal
+|  6 = @this_expr
+|  7 = @array_expr
+|  8 = @obj_expr
+|  9 = @function_expr
+| 10 = @seq_expr
+| 11 = @conditional_expr
+| 12 = @new_expr
+| 13 = @call_expr
+| 14 = @dot_expr
+| 15 = @index_expr
+| 16 = @neg_expr
+| 17 = @plus_expr
+| 18 = @log_not_expr
+| 19 = @bit_not_expr
+| 20 = @typeof_expr
+| 21 = @void_expr
+| 22 = @delete_expr
+| 23 = @eq_expr
+| 24 = @neq_expr
+| 25 = @eqq_expr
+| 26 = @neqq_expr
+| 27 = @lt_expr
+| 28 = @le_expr
+| 29 = @gt_expr
+| 30 = @ge_expr
+| 31 = @lshift_expr
+| 32 = @rshift_expr
+| 33 = @urshift_expr
+| 34 = @add_expr
+| 35 = @sub_expr
+| 36 = @mul_expr
+| 37 = @div_expr
+| 38 = @mod_expr
+| 39 = @bitor_expr
+| 40 = @xor_expr
+| 41 = @bitand_expr
+| 42 = @in_expr
+| 43 = @instanceof_expr
+| 44 = @logand_expr
+| 45 = @logor_expr
+| 47 = @assign_expr
+| 48 = @assign_add_expr
+| 49 = @assign_sub_expr
+| 50 = @assign_mul_expr
+| 51 = @assign_div_expr
+| 52 = @assign_mod_expr
+| 53 = @assign_lshift_expr
+| 54 = @assign_rshift_expr
+| 55 = @assign_urshift_expr
+| 56 = @assign_or_expr
+| 57 = @assign_xor_expr
+| 58 = @assign_and_expr
+| 59 = @preinc_expr
+| 60 = @postinc_expr
+| 61 = @predec_expr
+| 62 = @postdec_expr
+| 63 = @par_expr
+| 64 = @var_declarator
+| 65 = @arrow_function_expr
+| 66 = @spread_element
+| 67 = @array_pattern
+| 68 = @object_pattern
+| 69 = @yield_expr
+| 70 = @tagged_template_expr
+| 71 = @template_literal
+| 72 = @template_element
+| 73 = @array_comprehension_expr
+| 74 = @generator_expr
+| 75 = @for_in_comprehension_block
+| 76 = @for_of_comprehension_block
+| 77 = @legacy_letexpr
+| 78 = @var_decl
+| 79 = @proper_varaccess
+| 80 = @class_expr
+| 81 = @super_expr
+| 82 = @newtarget_expr
+| 83 = @named_import_specifier
+| 84 = @import_default_specifier
+| 85 = @import_namespace_specifier
+| 86 = @named_export_specifier
+| 87 = @exp_expr
+| 88 = @assign_exp_expr
+| 89 = @jsx_element
+| 90 = @jsx_qualified_name
+| 91 = @jsx_empty_expr
+| 92 = @await_expr
+| 93 = @function_sent_expr
+| 94 = @decorator
+| 95 = @export_default_specifier
+| 96 = @export_namespace_specifier
+| 97 = @bind_expr
+| 98 = @external_module_reference
+| 99 = @dynamic_import
+| 100 = @expression_with_type_arguments
+| 101 = @prefix_type_assertion
+| 102 = @as_type_assertion
+| 103 = @export_varaccess
+| 104 = @decorator_list
+| 105 = @non_null_assertion
+| 106 = @bigint_literal
+| 107 = @nullishcoalescing_expr
+| 108 = @e4x_xml_anyname
+| 109 = @e4x_xml_static_attribute_selector
+| 110 = @e4x_xml_dynamic_attribute_selector
+| 111 = @e4x_xml_filter_expression
+| 112 = @e4x_xml_static_qualident
+| 113 = @e4x_xml_dynamic_qualident
+| 114 = @e4x_xml_dotdotexpr
+| 115 = @import_meta_expr
+| 116 = @assignlogandexpr
+| 117 = @assignlogorexpr
+| 118 = @assignnullishcoalescingexpr
+| 119 = @template_pipe_ref
+| 120 = @generated_code_expr
+| 121 = @satisfies_expr
+;
+
+@varaccess = @proper_varaccess | @export_varaccess;
+@varref = @var_decl | @varaccess;
+
+@identifier = @label | @varref | @type_identifier;
+
+@literal = @null_literal | @boolean_literal | @number_literal | @string_literal | @regexp_literal | @bigint_literal;
+
+@propaccess = @dot_expr | @index_expr;
+
+@invokeexpr = @new_expr | @call_expr;
+
+@unaryexpr = @neg_expr | @plus_expr | @log_not_expr | @bit_not_expr | @typeof_expr | @void_expr | @delete_expr | @spread_element;
+
+@equality_test = @eq_expr | @neq_expr | @eqq_expr | @neqq_expr;
+
+@comparison = @equality_test | @lt_expr | @le_expr | @gt_expr | @ge_expr;
+
+@binaryexpr = @comparison | @lshift_expr | @rshift_expr | @urshift_expr | @add_expr | @sub_expr | @mul_expr | @div_expr | @mod_expr | @exp_expr | @bitor_expr | @xor_expr | @bitand_expr | @in_expr | @instanceof_expr | @logand_expr | @logor_expr | @nullishcoalescing_expr;
+
+@assignment = @assign_expr | @assign_add_expr | @assign_sub_expr | @assign_mul_expr | @assign_div_expr | @assign_mod_expr | @assign_exp_expr | @assign_lshift_expr | @assign_rshift_expr | @assign_urshift_expr | @assign_or_expr | @assign_xor_expr | @assign_and_expr | @assignlogandexpr | @assignlogorexpr | @assignnullishcoalescingexpr;
+
+@updateexpr = @preinc_expr | @postinc_expr | @predec_expr | @postdec_expr;
+
+@pattern = @varref | @array_pattern | @object_pattern;
+
+@comprehension_expr = @array_comprehension_expr | @generator_expr;
+
+@comprehension_block = @for_in_comprehension_block | @for_of_comprehension_block;
+
+@import_specifier = @named_import_specifier | @import_default_specifier | @import_namespace_specifier;
+
+@exportspecifier = @named_export_specifier | @export_default_specifier | @export_namespace_specifier;
+
+@type_keyword_operand = @import_declaration | @export_declaration | @import_specifier;
+
+@type_assertion = @as_type_assertion | @prefix_type_assertion;
+
+@class_definition = @class_decl_stmt | @class_expr;
+@interface_definition = @interface_declaration | @interface_typeexpr;
+@class_or_interface = @class_definition | @interface_definition;
+
+@lexical_decl = @var_decl | @type_decl;
+@lexical_access = @varaccess | @local_type_access | @local_var_type_access | @local_namespace_access;
+@lexical_ref = @lexical_decl | @lexical_access;
+
+@e4x_xml_attribute_selector = @e4x_xml_static_attribute_selector | @e4x_xml_dynamic_attribute_selector;
+@e4x_xml_qualident = @e4x_xml_static_qualident | @e4x_xml_dynamic_qualident;
+
+expr_contains_template_tag_location(
+  int expr: @expr ref,
+  int location: @location ref
+);
+
+@template_placeholder_tag_parent = @xmlelement | @xmlattribute | @file;
+
+template_placeholder_tag_info(
+  unique int node: @template_placeholder_tag,
+  int parentNode: @template_placeholder_tag_parent ref,
+  varchar(900) raw: string ref
+);
+
+// scopes
+scopes (unique int id: @scope,
+        int kind: int ref);
+
+case @scope.kind of
+   0 = @global_scope
+|  1 = @function_scope
+|  2 = @catch_scope
+|  3 = @module_scope
+|  4 = @block_scope
+|  5 = @for_scope
+|  6 = @for_in_scope // for-of scopes work the same as for-in scopes
+|  7 = @comprehension_block_scope
+|  8 = @class_expr_scope
+|  9 = @namespace_scope
+| 10 = @class_decl_scope
+| 11 = @interface_scope
+| 12 = @type_alias_scope
+| 13 = @mapped_type_scope
+| 14 = @enum_scope
+| 15 = @external_module_scope
+| 16 = @conditional_type_scope;
+
+scopenodes (unique int node: @ast_node ref,
+            int scope: @scope ref);
+
+scopenesting (unique int inner: @scope ref,
+              int outer: @scope ref);
+
+// functions
+@function = @function_decl_stmt | @function_expr | @arrow_function_expr;
+
+@parameterized = @function | @catch_clause;
+@type_parameterized = @function | @class_or_interface | @type_alias_declaration | @mapped_typeexpr | @infer_typeexpr;
+
+is_generator (int fun: @function ref);
+has_rest_parameter (int fun: @function ref);
+is_async (int fun: @function ref);
+
+// variables and lexically scoped type names
+#keyset[scope, name]
+variables (unique int id: @variable,
+           varchar(900) name: string ref,
+           int scope: @scope ref);
+
+#keyset[scope, name]
+local_type_names (unique int id: @local_type_name,
+                  varchar(900) name: string ref,
+                  int scope: @scope ref);
+
+#keyset[scope, name]
+local_namespace_names (unique int id: @local_namespace_name,
+                       varchar(900) name: string ref,
+                       int scope: @scope ref);
+
+is_arguments_object (int id: @variable ref);
+
+@lexical_name = @variable | @local_type_name | @local_namespace_name;
+
+@bind_id = @varaccess | @local_var_type_access;
+bind (unique int id: @bind_id ref,
+      int decl: @variable ref);
+
+decl (unique int id: @var_decl ref,
+      int decl: @variable ref);
+
+@typebind_id = @local_type_access | @export_varaccess;
+typebind (unique int id: @typebind_id ref,
+          int decl: @local_type_name ref);
+
+@typedecl_id = @type_decl | @var_decl;
+typedecl (unique int id: @typedecl_id ref,
+          int decl: @local_type_name ref);
+
+namespacedecl (unique int id: @var_decl ref,
+               int decl: @local_namespace_name ref);
+
+@namespacebind_id = @local_namespace_access | @export_varaccess;
+namespacebind (unique int id: @namespacebind_id ref,
+               int decl: @local_namespace_name ref);
+
+
+// properties in object literals, property patterns in object patterns, and method declarations in classes
+#keyset[parent, index]
+properties (unique int id: @property,
+            int parent: @property_parent ref,
+            int index: int ref,
+            int kind: int ref,
+            varchar(900) tostring: string ref);
+
+case @property.kind of
+  0 = @value_property
+| 1 = @property_getter
+| 2 = @property_setter
+| 3 = @jsx_attribute
+| 4 = @function_call_signature
+| 5 = @constructor_call_signature
+| 6 = @index_signature
+| 7 = @enum_member
+| 8 = @proper_field
+| 9 = @parameter_field
+| 10 = @static_initializer
+;
+
+@property_parent = @obj_expr | @object_pattern | @class_definition | @jsx_element | @interface_definition | @enum_declaration;
+@property_accessor = @property_getter | @property_setter;
+@call_signature = @function_call_signature | @constructor_call_signature;
+@field = @proper_field | @parameter_field;
+@field_or_vardeclarator = @field | @var_declarator;
+
+is_computed (int id: @property ref);
+is_method   (int id: @property ref);
+is_static   (int id: @property ref);
+is_abstract_member (int id: @property ref);
+is_const_enum (int id: @enum_declaration ref);
+is_abstract_class (int id: @class_decl_stmt ref);
+
+has_public_keyword (int id: @property ref);
+has_private_keyword (int id: @property ref);
+has_protected_keyword (int id: @property ref);
+has_readonly_keyword (int id: @property ref);
+has_type_keyword (int id: @type_keyword_operand ref);
+has_defer_keyword (int id: @import_declaration ref);
+is_optional_member (int id: @property ref);
+has_definite_assignment_assertion (int id: @field_or_vardeclarator ref);
+is_optional_parameter_declaration (unique int parameter: @pattern ref);
+
+#keyset[constructor, param_index]
+parameter_fields(
+  unique int field: @parameter_field ref,
+  int constructor: @function_expr ref,
+  int param_index: int ref
+);
+
+// types
+#keyset[parent, idx]
+typeexprs (
+  unique int id: @typeexpr,
+  int kind: int ref,
+  int parent: @typeexpr_parent ref,
+  int idx: int ref,
+  varchar(900) tostring: string ref
+);
+
+case @typeexpr.kind of
+  0 = @local_type_access
+| 1 = @type_decl
+| 2 = @keyword_typeexpr
+| 3 = @string_literal_typeexpr
+| 4 = @number_literal_typeexpr
+| 5 = @boolean_literal_typeexpr
+| 6 = @array_typeexpr
+| 7 = @union_typeexpr
+| 8 = @indexed_access_typeexpr
+| 9 = @intersection_typeexpr
+| 10 = @parenthesized_typeexpr
+| 11 = @tuple_typeexpr
+| 12 = @keyof_typeexpr
+| 13 = @qualified_type_access
+| 14 = @generic_typeexpr
+| 15 = @type_label
+| 16 = @typeof_typeexpr
+| 17 = @local_var_type_access
+| 18 = @qualified_var_type_access
+| 19 = @this_var_type_access
+| 20 = @predicate_typeexpr
+| 21 = @interface_typeexpr
+| 22 = @type_parameter
+| 23 = @plain_function_typeexpr
+| 24 = @constructor_typeexpr
+| 25 = @local_namespace_access
+| 26 = @qualified_namespace_access
+| 27 = @mapped_typeexpr
+| 28 = @conditional_typeexpr
+| 29 = @infer_typeexpr
+| 30 = @import_type_access
+| 31 = @import_namespace_access
+| 32 = @import_var_type_access
+| 33 = @optional_typeexpr
+| 34 = @rest_typeexpr
+| 35 = @bigint_literal_typeexpr
+| 36 = @readonly_typeexpr
+| 37 = @template_literal_typeexpr
+;
+
+@typeref = @typeaccess | @type_decl;
+@type_identifier = @type_decl | @local_type_access | @type_label | @local_var_type_access | @local_namespace_access;
+@typeexpr_parent = @expr | @stmt | @property | @typeexpr;
+@literal_typeexpr = @string_literal_typeexpr | @number_literal_typeexpr | @boolean_literal_typeexpr | @bigint_literal_typeexpr;
+@typeaccess = @local_type_access | @qualified_type_access | @import_type_access;
+@vartypeaccess = @local_var_type_access | @qualified_var_type_access | @this_var_type_access | @import_var_type_access;
+@namespace_access = @local_namespace_access | @qualified_namespace_access | @import_namespace_access;
+@import_typeexpr = @import_type_access | @import_namespace_access | @import_var_type_access;
+
+@function_typeexpr = @plain_function_typeexpr | @constructor_typeexpr;
+
+// types
+types (
+  unique int id: @type,
+  int kind: int ref,
+  varchar(900) tostring: string ref
+);
+
+#keyset[parent, idx]
+type_child (
+  int child: @type ref,
+  int parent: @type ref,
+  int idx: int ref
+);
+
+case @type.kind of
+  0 = @any_type
+| 1 = @string_type
+| 2 = @number_type
+| 3 = @union_type
+| 4 = @true_type
+| 5 = @false_type
+| 6 = @type_reference
+| 7 = @object_type
+| 8 = @canonical_type_variable_type
+| 9 = @typeof_type
+| 10 = @void_type
+| 11 = @undefined_type
+| 12 = @null_type
+| 13 = @never_type
+| 14 = @plain_symbol_type
+| 15 = @unique_symbol_type
+| 16 = @objectkeyword_type
+| 17 = @intersection_type
+| 18 = @tuple_type
+| 19 = @lexical_type_variable_type
+| 20 = @this_type
+| 21 = @number_literal_type
+| 22 = @string_literal_type
+| 23 = @unknown_type
+| 24 = @bigint_type
+| 25 = @bigint_literal_type
+;
+
+@boolean_literal_type = @true_type | @false_type;
+@symbol_type = @plain_symbol_type | @unique_symbol_type;
+@union_or_intersection_type = @union_type | @intersection_type;
+@typevariable_type = @canonical_type_variable_type | @lexical_type_variable_type;
+
+has_asserts_keyword(int node: @predicate_typeexpr ref);
+
+@typed_ast_node = @expr | @typeexpr | @function;
+ast_node_type(
+  unique int node: @typed_ast_node ref,
+  int typ: @type ref);
+
+declared_function_signature(
+  unique int node: @function ref,
+  int sig: @signature_type ref
+);
+
+invoke_expr_signature(
+  unique int node: @invokeexpr ref,
+  int sig: @signature_type ref
+);
+
+invoke_expr_overload_index(
+  unique int node: @invokeexpr ref,
+  int index: int ref
+);
+
+symbols (
+  unique int id: @symbol,
+  int kind: int ref,
+  varchar(900) name: string ref
+);
+
+symbol_parent (
+  unique int symbol: @symbol ref,
+  int parent: @symbol ref
+);
+
+symbol_module (
+  int symbol: @symbol ref,
+  varchar(900) moduleName: string ref
+);
+
+symbol_global (
+  int symbol: @symbol ref,
+  varchar(900) globalName: string ref
+);
+
+case @symbol.kind of
+  0 = @root_symbol
+| 1 = @member_symbol
+| 2 = @other_symbol
+;
+
+@type_with_symbol = @type_reference | @typevariable_type | @typeof_type | @unique_symbol_type;
+@ast_node_with_symbol = @type_definition | @namespace_definition | @toplevel | @typeaccess | @namespace_access | @var_decl | @function | @invokeexpr | @import_declaration | @external_module_reference | @external_module_declaration;
+
+ast_node_symbol(
+  unique int node: @ast_node_with_symbol ref,
+  int symbol: @symbol ref);
+
+type_symbol(
+  unique int typ: @type_with_symbol ref,
+  int symbol: @symbol ref);
+
+#keyset[typ, name]
+type_property(
+  int typ: @type ref,
+  varchar(900) name: string ref,
+  int propertyType: @type ref);
+
+type_alias(
+  unique int aliasType: @type ref,
+  int underlyingType: @type ref);
+
+@literal_type = @string_literal_type | @number_literal_type | @boolean_literal_type | @bigint_literal_type;
+@type_with_literal_value = @string_literal_type | @number_literal_type | @bigint_literal_type;
+type_literal_value(
+  unique int typ: @type_with_literal_value ref,
+  varchar(900) value: string ref);
+
+signature_types (
+  unique int id: @signature_type,
+  int kind: int ref,
+  varchar(900) tostring: string ref,
+  int type_parameters: int ref,
+  int required_params: int ref
+);
+
+is_abstract_signature(
+  unique int sig: @signature_type ref
+);
+
+signature_rest_parameter(
+  unique int sig: @signature_type ref,
+  int rest_param_arra_type: @type ref
+);
+
+case @signature_type.kind of
+  0 = @function_signature_type
+| 1 = @constructor_signature_type
+;
+
+#keyset[typ, kind, index]
+type_contains_signature (
+  int typ: @type ref,
+  int kind: int ref,  // constructor/call/index
+  int index: int ref, // ordering of overloaded signatures
+  int sig: @signature_type ref
+);
+
+#keyset[parent, index]
+signature_contains_type (
+  int child: @type ref,
+  int parent: @signature_type ref,
+  int index: int ref
+);
+
+#keyset[sig, index]
+signature_parameter_name (
+  int sig: @signature_type ref,
+  int index: int ref,
+  varchar(900) name: string ref
+);
+
+number_index_type (
+  unique int baseType: @type ref,
+  int propertyType: @type ref
+);
+
+string_index_type (
+  unique int baseType: @type ref,
+  int propertyType: @type ref
+);
+
+base_type_names(
+  int typeName: @symbol ref,
+  int baseTypeName: @symbol ref
+);
+
+self_types(
+  int typeName: @symbol ref,
+  int selfType: @type_reference ref
+);
+
+tuple_type_min_length(
+  unique int typ: @type ref,
+  int minLength: int ref
+);
+
+tuple_type_rest_index(
+  unique int typ: @type ref,
+  int index: int ref
+);
+
+// comments
+comments (unique int id: @comment,
+          int kind: int ref,
+          int toplevel: @toplevel ref,
+          varchar(900) text: string ref,
+          varchar(900) tostring: string ref);
+
+case @comment.kind of
+  0 = @slashslash_comment
+| 1 = @slashstar_comment
+| 2 = @doc_comment
+| 3 = @html_comment_start
+| 4 = @htmlcommentend;
+
+@html_comment = @html_comment_start | @htmlcommentend;
+@line_comment = @slashslash_comment | @html_comment;
+@block_comment = @slashstar_comment | @doc_comment;
+
+// source lines
+lines (unique int id: @line,
+       int toplevel: @toplevel ref,
+       varchar(900) text: string ref,
+       varchar(2) terminator: string ref);
+indentation (int file: @file ref,
+            int lineno: int ref,
+            varchar(1) indentChar: string ref,
+            int indentDepth: int ref);
+
+// JavaScript parse errors
+js_parse_errors (unique int id: @js_parse_error,
+        int toplevel: @toplevel ref,
+        varchar(900) message: string ref,
+        varchar(900) line: string ref);
+
+// regular expressions
+#keyset[parent, idx]
+regexpterm (unique int id: @regexpterm,
+        int kind: int ref,
+        int parent: @regexpparent ref,
+        int idx: int ref,
+        varchar(900) tostring: string ref);
+
+@regexpparent = @regexpterm | @regexp_literal | @string_literal | @add_expr;
+
+case @regexpterm.kind of
+   0 = @regexp_alt
+|  1 = @regexp_seq
+|  2 = @regexp_caret
+|  3 = @regexp_dollar
+|  4 = @regexp_wordboundary
+|  5 = @regexp_nonwordboundary
+|  6 = @regexp_positive_lookahead
+|  7 = @regexp_negative_lookahead
+|  8 = @regexp_star
+|  9 = @regexp_plus
+| 10 = @regexp_opt
+| 11 = @regexp_range
+| 12 = @regexp_dot
+| 13 = @regexp_group
+| 14 = @regexp_normal_constant
+| 15 = @regexp_hex_escape
+| 16 = @regexp_unicode_escape
+| 17 = @regexp_dec_escape
+| 18 = @regexp_oct_escape
+| 19 = @regexp_ctrl_escape
+| 20 = @regexp_char_class_escape
+| 21 = @regexp_id_escape
+| 22 = @regexp_backref
+| 23 = @regexp_char_class
+| 24 = @regexp_char_range
+| 25 = @regexp_positive_lookbehind
+| 26 = @regexp_negative_lookbehind
+| 27 = @regexp_unicode_property_escape
+| 28 = @regexp_quoted_string
+| 29 = @regexp_intersection
+| 30 = @regexp_subtraction;
+
+regexp_parse_errors (unique int id: @regexp_parse_error,
+    int regexp: @regexpterm ref,
+    varchar(900) message: string ref);
+
+@regexp_quantifier = @regexp_star | @regexp_plus | @regexp_opt | @regexp_range;
+@regexp_escape = @regexp_char_escape | @regexp_char_class_escape | @regexp_unicode_property_escape;
+@regexp_char_escape = @regexp_hex_escape | @regexp_unicode_escape | @regexp_dec_escape | @regexp_oct_escape | @regexp_ctrl_escape | @regexp_id_escape;
+@regexp_constant = @regexp_normal_constant | @regexp_char_escape;
+@regexp_lookahead = @regexp_positive_lookahead | @regexp_negative_lookahead;
+@regexp_lookbehind = @regexp_positive_lookbehind | @regexp_negative_lookbehind;
+@regexp_subpattern = @regexp_lookahead | @regexp_lookbehind;
+@regexp_anchor = @regexp_dollar | @regexp_caret;
+
+is_greedy (int id: @regexp_quantifier ref);
+range_quantifier_lower_bound (unique int id: @regexp_range ref, int lo: int ref);
+range_quantifier_upper_bound (unique int id: @regexp_range ref, int hi: int ref);
+is_capture (unique int id: @regexp_group ref, int number: int ref);
+is_named_capture (unique int id: @regexp_group ref, string name: string ref);
+is_inverted (int id: @regexp_char_class ref);
+regexp_const_value (unique int id: @regexp_constant ref, varchar(1) value: string ref);
+char_class_escape (unique int id: @regexp_char_class_escape ref, varchar(1) value: string ref);
+backref (unique int id: @regexp_backref ref, int value: int ref);
+named_backref (unique int id: @regexp_backref ref, string name: string ref);
+unicode_property_escapename (unique int id: @regexp_unicode_property_escape ref, string name: string ref);
+unicode_property_escapevalue (unique int id: @regexp_unicode_property_escape ref, string value: string ref);
+
+// tokens
+#keyset[toplevel, idx]
+tokeninfo (unique int id: @token,
+    int kind: int ref,
+    int toplevel: @toplevel ref,
+    int idx: int ref,
+    varchar(900) value: string ref);
+
+case @token.kind of
+  0 = @token_eof
+| 1 = @token_null_literal
+| 2 = @token_boolean_literal
+| 3 = @token_numeric_literal
+| 4 = @token_string_literal
+| 5 = @token_regular_expression
+| 6 = @token_identifier
+| 7 = @token_keyword
+| 8 = @token_punctuator;
+
+// associate comments with the token immediately following them (which may be EOF)
+next_token (int comment: @comment ref, int token: @token ref);
+
+// JSON
+#keyset[parent, idx]
+json (unique int id: @json_value,
+      int kind: int ref,
+      int parent: @json_parent ref,
+      int idx: int ref,
+      varchar(900) tostring: string ref);
+
+json_literals (varchar(900) value: string ref,
+      varchar(900) raw: string ref,
+      unique int expr: @json_value ref);
+
+json_properties (int obj: @json_object ref,
+      varchar(900) property: string ref,
+      int value: @json_value ref);
+
+json_errors (unique int id: @json_parse_error,
+      varchar(900) message: string ref);
+
+json_locations(unique int locatable: @json_locatable ref,
+      int location: @location_default ref);
+
+case @json_value.kind of
+  0 = @json_null
+| 1 = @json_boolean
+| 2 = @json_number
+| 3 = @json_string
+| 4 = @json_array
+| 5 = @json_object;
+
+@json_parent = @json_object | @json_array | @file;
+
+@json_locatable = @json_value | @json_parse_error;
+
+// locations
+@ast_node = @toplevel | @stmt | @expr | @property | @typeexpr;
+
+@locatable = @file
+    | @ast_node
+    | @comment
+    | @line
+    | @js_parse_error | @regexp_parse_error
+    | @regexpterm
+    | @json_locatable
+    | @token
+    | @cfg_node
+    | @jsdoc | @jsdoc_type_expr | @jsdoc_tag
+    | @yaml_locatable
+    | @xmllocatable
+    | @configLocatable
+    | @template_placeholder_tag;
+
+hasLocation (unique int locatable: @locatable ref,
+    int location: @location ref);
+
+// CFG
+entry_cfg_node (unique int id: @entry_node, int container: @stmt_container ref);
+exit_cfg_node (unique int id: @exit_node, int container: @stmt_container ref);
+guard_node (unique int id: @guard_node, int kind: int ref, int test: @expr ref);
+case @guard_node.kind of
+  0 = @falsy_guard
+| 1 = @truthy_guard;
+@condition_guard = @falsy_guard | @truthy_guard;
+
+@synthetic_cfg_node = @entry_node | @exit_node | @guard_node;
+@cfg_node = @synthetic_cfg_node | @expr_parent;
+
+successor (int pred: @cfg_node ref, int succ: @cfg_node ref);
+
+// JSDoc comments
+jsdoc (unique int id: @jsdoc, varchar(900) description: string ref, int comment: @comment ref);
+#keyset[parent, idx]
+jsdoc_tags (unique int id: @jsdoc_tag, varchar(900) title: string ref,
+            int parent: @jsdoc ref, int idx: int ref, varchar(900) tostring: string ref);
+jsdoc_tag_descriptions (unique int tag: @jsdoc_tag ref, varchar(900) text: string ref);
+jsdoc_tag_names (unique int tag: @jsdoc_tag ref, varchar(900) text: string ref);
+
+#keyset[parent, idx]
+jsdoc_type_exprs (unique int id: @jsdoc_type_expr,
+                  int kind: int ref,
+                  int parent: @jsdoc_type_expr_parent ref,
+                  int idx: int ref,
+                  varchar(900) tostring: string ref);
+case @jsdoc_type_expr.kind of
+    0 = @jsdoc_any_type_expr
+|   1 = @jsdoc_null_type_expr
+|   2 = @jsdoc_undefined_type_expr
+|   3 = @jsdoc_unknown_type_expr
+|   4 = @jsdoc_void_type_expr
+|   5 = @jsdoc_identifier_type_expr
+|   6 = @jsdoc_applied_type_expr
+|   7 = @jsdoc_nullable_type_expr
+|   8 = @jsdoc_non_nullable_type_expr
+|   9 = @jsdoc_record_type_expr
+|  10 = @jsdoc_array_type_expr
+|  11 = @jsdoc_union_type_expr
+|  12 = @jsdoc_function_type_expr
+|  13 = @jsdoc_optional_type_expr
+|  14 = @jsdoc_rest_type_expr
+|  15 = @jsdoc_qualified_type_expr
+;
+
+#keyset[id, idx]
+jsdoc_record_field_name (int id: @jsdoc_record_type_expr ref, int idx: int ref, varchar(900) name: string ref);
+jsdoc_prefix_qualifier (int id: @jsdoc_type_expr ref);
+jsdoc_has_new_parameter (int fn: @jsdoc_function_type_expr ref);
+
+@jsdoc_type_expr_parent = @jsdoc_type_expr | @jsdoc_tag;
+
+jsdoc_errors (unique int id: @jsdoc_error, int tag: @jsdoc_tag ref, varchar(900) message: string ref, varchar(900) tostring: string ref);
+
+@dataflownode = @expr | @function_decl_stmt | @class_decl_stmt | @namespace_declaration | @enum_declaration | @property;
+
+@optionalchainable = @call_expr | @propaccess;
+
+isOptionalChaining(int id: @optionalchainable ref);
+
+/**
+ * The time taken for the extraction of a file.
+ * This table contains non-deterministic content.
+ *
+ * The sum of the `time` column for each (`file`, `timerKind`) pair
+ * is the total time taken for extraction of `file`.  The `extractionPhase`
+ * column provides a granular view of the extraction time of the file.
+ */
+extraction_time(
+  int file : @file ref,
+  // see `com.semmle.js.extractor.ExtractionMetrics.ExtractionPhase`.
+  int extractionPhase: int ref,
+  // 0 for the elapsed CPU time in nanoseconds, 1 for the elapsed wallclock time in nanoseconds
+  int timerKind: int ref,
+  float time: float ref
+)
+
+/**
+* Non-timing related data for the extraction of a single file.
+* This table contains non-deterministic content.
+*/
+extraction_data(
+  int file : @file ref,
+  // the absolute path to the cache file
+  varchar(900) cacheFile: string ref,
+  boolean fromCache: boolean ref,
+  int length: int ref
+)
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
+
+/*- Configuration files with key value pairs -*/
+
+configs(
+  unique int id: @config
+);
+
+configNames(
+  unique int id: @configName,
+  int config: @config ref,
+  string name: string ref
+);
+
+configValues(
+  unique int id: @configValue,
+  int config: @config ref,
+  string value: string ref
+);
+
+configLocations(
+  int locatable: @configLocatable ref,
+  int location: @location_default ref
+);
+
+@configLocatable = @config | @configName | @configValue;
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
diff --git a/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/upgrade.properties b/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/javascript/ql/lib/upgrades/80b2bc24189307c5fd178dc2da95b45bcdb117f7/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/old.dbscheme b/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/old.dbscheme
new file mode 100644
index 000000000000..279cbb08d387
--- /dev/null
+++ b/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/old.dbscheme
@@ -0,0 +1,1289 @@
+/*
+ *      This dbscheme is auto-generated by 'semmle/dbscheme_gen.py'.
+ *      Run "make dbscheme" in python/extractor/ to regenerate.
+ *      WARNING: Any modifications to this file will be lost.
+ *      Relations can be changed by modifying master.py or
+ *      by adding rules to dbscheme.template
+ */
+
+/* This is a dummy line to alter the dbscheme, so we can make a database upgrade
+ * without actually changing any of the dbscheme predicates. It contains a date
+ * to allow for such updates in the future as well.
+ *
+ * 2020-07-02
+ *
+ * DO NOT remove this comment carelessly, since it can revert the dbscheme back to a
+ * previously seen state (matching a previously seen SHA), which would make the upgrade
+ * mechanism not work properly.
+ */
+
+/*- DEPRECATED: External defects and metrics -*/
+
+externalDefects(
+  unique int id : @externalDefect,
+  varchar(900) queryPath : string ref,
+  int location : @location ref,
+  varchar(900) message : string ref,
+  float severity : float ref
+);
+
+externalMetrics(
+  unique int id : @externalMetric,
+  varchar(900) queryPath : string ref,
+  int location : @location ref,
+  float value : float ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- DEPRECATED: Snapshot date -*/
+
+snapshotDate(unique date snapshotDate : date ref);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- DEPRECATED: Duplicate code -*/
+
+duplicateCode(
+  unique int id : @duplication,
+  string relativePath : string ref,
+  int equivClass : int ref
+);
+
+similarCode(
+  unique int id : @similarity,
+  string relativePath : string ref,
+  int equivClass : int ref
+);
+
+@duplication_or_similarity = @duplication | @similarity
+
+tokens(
+  int id : @duplication_or_similarity ref,
+  int offset : int ref,
+  int beginLine : int ref,
+  int beginColumn : int ref,
+  int endLine : int ref,
+  int endColumn : int ref
+);
+
+/*- DEPRECATED: Version control data -*/
+
+svnentries(
+  unique int id : @svnentry,
+  string revision : string ref,
+  string author : string ref,
+  date revisionDate : date ref,
+  int changeSize : int ref
+)
+
+svnaffectedfiles(
+  int id : @svnentry ref,
+  int file : @file ref,
+  string action : string ref
+)
+
+svnentrymsg(
+  unique int id : @svnentry ref,
+  string message : string ref
+)
+
+svnchurn(
+  int commit : @svnentry ref,
+  int file : @file ref,
+  int addedLines : int ref,
+  int deletedLines : int ref
+)
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Python dbscheme -*/
+
+/*
+ * Line metrics
+ */
+py_codelines(int id : @py_scope ref,
+             int count : int ref);
+
+py_commentlines(int id : @py_scope ref,
+                int count : int ref);
+
+py_docstringlines(int id : @py_scope ref,
+                int count : int ref);
+
+py_alllines(int id : @py_scope ref,
+                int count : int ref);
+
+/****************************
+        Python dbscheme
+****************************/
+
+@sourceline = @file | @py_Module | @xmllocatable;
+
+@location = @location_ast | @location_default ;
+
+locations_ast(unique int id: @location_ast,
+          int module: @py_Module ref,
+          int beginLine: int ref,
+          int beginColumn: int ref,
+          int endLine: int ref,
+          int endColumn: int ref);
+
+file_contents(unique int file: @file ref, string contents: string ref);
+
+py_module_path(int module: @py_Module ref, int file: @container ref);
+
+variable(unique int id : @py_variable,
+         int scope : @py_scope ref,
+         varchar(1) name : string ref);
+
+py_line_lengths(unique int id : @py_line,
+                int file: @py_Module ref,
+                int line : int ref,
+                int length : int ref);
+
+py_extracted_version(int module : @py_Module ref,
+                     varchar(1) version : string ref);
+
+/* AUTO GENERATED PART STARTS HERE */
+
+
+/* <Field> AnnAssign.location = 0, location */
+/* <Field> AnnAssign.value = 1, expr */
+/* <Field> AnnAssign.annotation = 2, expr */
+/* <Field> AnnAssign.target = 3, expr */
+
+/* <Field> Assert.location = 0, location */
+/* <Field> Assert.test = 1, expr */
+/* <Field> Assert.msg = 2, expr */
+
+/* <Field> Assign.location = 0, location */
+/* <Field> Assign.value = 1, expr */
+/* <Field> Assign.targets = 2, expr_list */
+
+/* <Field> AssignExpr.location = 0, location */
+/* <Field> AssignExpr.parenthesised = 1, bool */
+/* <Field> AssignExpr.value = 2, expr */
+/* <Field> AssignExpr.target = 3, expr */
+
+/* <Field> Attribute.location = 0, location */
+/* <Field> Attribute.parenthesised = 1, bool */
+/* <Field> Attribute.value = 2, expr */
+/* <Field> Attribute.attr = 3, str */
+/* <Field> Attribute.ctx = 4, expr_context */
+
+/* <Field> AugAssign.location = 0, location */
+/* <Field> AugAssign.operation = 1, BinOp */
+
+/* <Field> Await.location = 0, location */
+/* <Field> Await.parenthesised = 1, bool */
+/* <Field> Await.value = 2, expr */
+
+/* <Field> BinaryExpr.location = 0, location */
+/* <Field> BinaryExpr.parenthesised = 1, bool */
+/* <Field> BinaryExpr.left = 2, expr */
+/* <Field> BinaryExpr.op = 3, operator */
+/* <Field> BinaryExpr.right = 4, expr */
+/* <Parent> BinaryExpr = AugAssign  */
+
+/* <Field> BoolExpr.location = 0, location */
+/* <Field> BoolExpr.parenthesised = 1, bool */
+/* <Field> BoolExpr.op = 2, boolop */
+/* <Field> BoolExpr.values = 3, expr_list */
+
+/* <Field> Break.location = 0, location */
+
+/* <Field> Bytes.location = 0, location */
+/* <Field> Bytes.parenthesised = 1, bool */
+/* <Field> Bytes.s = 2, bytes */
+/* <Field> Bytes.prefix = 3, bytes */
+/* <Field> Bytes.implicitly_concatenated_parts = 4, StringPart_list */
+
+/* <Field> Call.location = 0, location */
+/* <Field> Call.parenthesised = 1, bool */
+/* <Field> Call.func = 2, expr */
+/* <Field> Call.positional_args = 3, expr_list */
+/* <Field> Call.named_args = 4, dict_item_list */
+
+/* <Field> Case.location = 0, location */
+/* <Field> Case.pattern = 1, pattern */
+/* <Field> Case.guard = 2, expr */
+/* <Field> Case.body = 3, stmt_list */
+
+/* <Field> Class.name = 0, str */
+/* <Field> Class.body = 1, stmt_list */
+/* <Parent> Class = ClassExpr  */
+
+/* <Field> ClassExpr.location = 0, location */
+/* <Field> ClassExpr.parenthesised = 1, bool */
+/* <Field> ClassExpr.name = 2, str */
+/* <Field> ClassExpr.bases = 3, expr_list */
+/* <Field> ClassExpr.keywords = 4, dict_item_list */
+/* <Field> ClassExpr.inner_scope = 5, Class */
+/* <Field> ClassExpr.type_parameters = 6, type_parameter_list */
+
+/* <Field> Compare.location = 0, location */
+/* <Field> Compare.parenthesised = 1, bool */
+/* <Field> Compare.left = 2, expr */
+/* <Field> Compare.ops = 3, cmpop_list */
+/* <Field> Compare.comparators = 4, expr_list */
+
+/* <Field> Continue.location = 0, location */
+
+/* <Field> Delete.location = 0, location */
+/* <Field> Delete.targets = 1, expr_list */
+
+/* <Field> Dict.location = 0, location */
+/* <Field> Dict.parenthesised = 1, bool */
+/* <Field> Dict.items = 2, dict_item_list */
+
+/* <Field> DictComp.location = 0, location */
+/* <Field> DictComp.parenthesised = 1, bool */
+/* <Field> DictComp.function = 2, Function */
+/* <Field> DictComp.iterable = 3, expr */
+
+/* <Field> DictUnpacking.location = 0, location */
+/* <Field> DictUnpacking.value = 1, expr */
+
+/* <Field> Ellipsis.location = 0, location */
+/* <Field> Ellipsis.parenthesised = 1, bool */
+
+/* <Field> ExceptGroupStmt.location = 0, location */
+/* <Field> ExceptGroupStmt.type = 1, expr */
+/* <Field> ExceptGroupStmt.name = 2, expr */
+/* <Field> ExceptGroupStmt.body = 3, stmt_list */
+
+/* <Field> ExceptStmt.location = 0, location */
+/* <Field> ExceptStmt.type = 1, expr */
+/* <Field> ExceptStmt.name = 2, expr */
+/* <Field> ExceptStmt.body = 3, stmt_list */
+
+/* <Field> Exec.location = 0, location */
+/* <Field> Exec.body = 1, expr */
+/* <Field> Exec.globals = 2, expr */
+/* <Field> Exec.locals = 3, expr */
+
+/* <Field> ExprStmt.location = 0, location */
+/* <Field> ExprStmt.value = 1, expr */
+
+/* <Field> Filter.location = 0, location */
+/* <Field> Filter.parenthesised = 1, bool */
+/* <Field> Filter.value = 2, expr */
+/* <Field> Filter.filter = 3, expr */
+
+/* <Field> For.location = 0, location */
+/* <Field> For.target = 1, expr */
+/* <Field> For.iter = 2, expr */
+/* <Field> For.body = 3, stmt_list */
+/* <Field> For.orelse = 4, stmt_list */
+/* <Field> For.is_async = 5, bool */
+
+/* <Field> FormattedValue.location = 0, location */
+/* <Field> FormattedValue.parenthesised = 1, bool */
+/* <Field> FormattedValue.value = 2, expr */
+/* <Field> FormattedValue.conversion = 3, str */
+/* <Field> FormattedValue.format_spec = 4, JoinedStr */
+
+/* <Field> Function.name = 0, str */
+/* <Field> Function.args = 1, parameter_list */
+/* <Field> Function.vararg = 2, expr */
+/* <Field> Function.kwonlyargs = 3, expr_list */
+/* <Field> Function.kwarg = 4, expr */
+/* <Field> Function.body = 5, stmt_list */
+/* <Field> Function.is_async = 6, bool */
+/* <Field> Function.type_parameters = 7, type_parameter_list */
+/* <Parent> Function = FunctionParent  */
+
+/* <Field> FunctionExpr.location = 0, location */
+/* <Field> FunctionExpr.parenthesised = 1, bool */
+/* <Field> FunctionExpr.name = 2, str */
+/* <Field> FunctionExpr.args = 3, arguments */
+/* <Field> FunctionExpr.returns = 4, expr */
+/* <Field> FunctionExpr.inner_scope = 5, Function */
+
+/* <Field> GeneratorExp.location = 0, location */
+/* <Field> GeneratorExp.parenthesised = 1, bool */
+/* <Field> GeneratorExp.function = 2, Function */
+/* <Field> GeneratorExp.iterable = 3, expr */
+
+/* <Field> Global.location = 0, location */
+/* <Field> Global.names = 1, str_list */
+
+/* <Field> Guard.location = 0, location */
+/* <Field> Guard.parenthesised = 1, bool */
+/* <Field> Guard.test = 2, expr */
+
+/* <Field> If.location = 0, location */
+/* <Field> If.test = 1, expr */
+/* <Field> If.body = 2, stmt_list */
+/* <Field> If.orelse = 3, stmt_list */
+
+/* <Field> IfExp.location = 0, location */
+/* <Field> IfExp.parenthesised = 1, bool */
+/* <Field> IfExp.test = 2, expr */
+/* <Field> IfExp.body = 3, expr */
+/* <Field> IfExp.orelse = 4, expr */
+
+/* <Field> Import.location = 0, location */
+/* <Field> Import.names = 1, alias_list */
+
+/* <Field> ImportExpr.location = 0, location */
+/* <Field> ImportExpr.parenthesised = 1, bool */
+/* <Field> ImportExpr.level = 2, int */
+/* <Field> ImportExpr.name = 3, str */
+/* <Field> ImportExpr.top = 4, bool */
+
+/* <Field> ImportStar.location = 0, location */
+/* <Field> ImportStar.module = 1, expr */
+
+/* <Field> ImportMember.location = 0, location */
+/* <Field> ImportMember.parenthesised = 1, bool */
+/* <Field> ImportMember.module = 2, expr */
+/* <Field> ImportMember.name = 3, str */
+
+/* <Field> Fstring.location = 0, location */
+/* <Field> Fstring.parenthesised = 1, bool */
+/* <Field> Fstring.values = 2, expr_list */
+/* <Parent> Fstring = FormattedValue  */
+
+/* <Field> JoinedTemplateString.location = 0, location */
+/* <Field> JoinedTemplateString.parenthesised = 1, bool */
+/* <Field> JoinedTemplateString.strings = 2, TemplateString_list */
+
+/* <Field> KeyValuePair.location = 0, location */
+/* <Field> KeyValuePair.value = 1, expr */
+/* <Field> KeyValuePair.key = 2, expr */
+
+/* <Field> Lambda.location = 0, location */
+/* <Field> Lambda.parenthesised = 1, bool */
+/* <Field> Lambda.args = 2, arguments */
+/* <Field> Lambda.inner_scope = 3, Function */
+
+/* <Field> List.location = 0, location */
+/* <Field> List.parenthesised = 1, bool */
+/* <Field> List.elts = 2, expr_list */
+/* <Field> List.ctx = 3, expr_context */
+
+/* <Field> ListComp.location = 0, location */
+/* <Field> ListComp.parenthesised = 1, bool */
+/* <Field> ListComp.function = 2, Function */
+/* <Field> ListComp.iterable = 3, expr */
+/* <Field> ListComp.generators = 4, comprehension_list */
+/* <Field> ListComp.elt = 5, expr */
+
+/* <Field> MatchStmt.location = 0, location */
+/* <Field> MatchStmt.subject = 1, expr */
+/* <Field> MatchStmt.cases = 2, stmt_list */
+
+/* <Field> MatchAsPattern.location = 0, location */
+/* <Field> MatchAsPattern.parenthesised = 1, bool */
+/* <Field> MatchAsPattern.pattern = 2, pattern */
+/* <Field> MatchAsPattern.alias = 3, expr */
+
+/* <Field> MatchCapturePattern.location = 0, location */
+/* <Field> MatchCapturePattern.parenthesised = 1, bool */
+/* <Field> MatchCapturePattern.variable = 2, expr */
+
+/* <Field> MatchClassPattern.location = 0, location */
+/* <Field> MatchClassPattern.parenthesised = 1, bool */
+/* <Field> MatchClassPattern.class = 2, expr */
+/* <Field> MatchClassPattern.class_name = 3, expr */
+/* <Field> MatchClassPattern.positional = 4, pattern_list */
+/* <Field> MatchClassPattern.keyword = 5, pattern_list */
+
+/* <Field> MatchDoubleStarPattern.location = 0, location */
+/* <Field> MatchDoubleStarPattern.parenthesised = 1, bool */
+/* <Field> MatchDoubleStarPattern.target = 2, pattern */
+
+/* <Field> MatchKeyValuePattern.location = 0, location */
+/* <Field> MatchKeyValuePattern.parenthesised = 1, bool */
+/* <Field> MatchKeyValuePattern.key = 2, pattern */
+/* <Field> MatchKeyValuePattern.value = 3, pattern */
+
+/* <Field> MatchKeywordPattern.location = 0, location */
+/* <Field> MatchKeywordPattern.parenthesised = 1, bool */
+/* <Field> MatchKeywordPattern.attribute = 2, expr */
+/* <Field> MatchKeywordPattern.value = 3, pattern */
+
+/* <Field> MatchLiteralPattern.location = 0, location */
+/* <Field> MatchLiteralPattern.parenthesised = 1, bool */
+/* <Field> MatchLiteralPattern.literal = 2, expr */
+
+/* <Field> MatchMappingPattern.location = 0, location */
+/* <Field> MatchMappingPattern.parenthesised = 1, bool */
+/* <Field> MatchMappingPattern.mappings = 2, pattern_list */
+
+/* <Field> MatchOrPattern.location = 0, location */
+/* <Field> MatchOrPattern.parenthesised = 1, bool */
+/* <Field> MatchOrPattern.patterns = 2, pattern_list */
+
+/* <Field> MatchSequencePattern.location = 0, location */
+/* <Field> MatchSequencePattern.parenthesised = 1, bool */
+/* <Field> MatchSequencePattern.patterns = 2, pattern_list */
+
+/* <Field> MatchStarPattern.location = 0, location */
+/* <Field> MatchStarPattern.parenthesised = 1, bool */
+/* <Field> MatchStarPattern.target = 2, pattern */
+
+/* <Field> MatchValuePattern.location = 0, location */
+/* <Field> MatchValuePattern.parenthesised = 1, bool */
+/* <Field> MatchValuePattern.value = 2, expr */
+
+/* <Field> MatchWildcardPattern.location = 0, location */
+/* <Field> MatchWildcardPattern.parenthesised = 1, bool */
+
+/* <Field> Module.name = 0, str */
+/* <Field> Module.hash = 1, str */
+/* <Field> Module.body = 2, stmt_list */
+/* <Field> Module.kind = 3, str */
+
+/* <Field> Name.location = 0, location */
+/* <Field> Name.parenthesised = 1, bool */
+/* <Field> Name.variable = 2, variable */
+/* <Field> Name.ctx = 3, expr_context */
+/* <Parent> Name = ParameterList  */
+
+/* <Field> Nonlocal.location = 0, location */
+/* <Field> Nonlocal.names = 1, str_list */
+
+/* <Field> Num.location = 0, location */
+/* <Field> Num.parenthesised = 1, bool */
+/* <Field> Num.n = 2, number */
+/* <Field> Num.text = 3, number */
+
+/* <Field> ParamSpec.location = 0, location */
+/* <Field> ParamSpec.name = 1, expr */
+/* <Field> ParamSpec.default = 2, expr */
+
+/* <Field> Pass.location = 0, location */
+
+/* <Field> PlaceHolder.location = 0, location */
+/* <Field> PlaceHolder.parenthesised = 1, bool */
+/* <Field> PlaceHolder.variable = 2, variable */
+/* <Field> PlaceHolder.ctx = 3, expr_context */
+
+/* <Field> Print.location = 0, location */
+/* <Field> Print.dest = 1, expr */
+/* <Field> Print.values = 2, expr_list */
+/* <Field> Print.nl = 3, bool */
+
+/* <Field> Raise.location = 0, location */
+/* <Field> Raise.exc = 1, expr */
+/* <Field> Raise.cause = 2, expr */
+/* <Field> Raise.type = 3, expr */
+/* <Field> Raise.inst = 4, expr */
+/* <Field> Raise.tback = 5, expr */
+
+/* <Field> Repr.location = 0, location */
+/* <Field> Repr.parenthesised = 1, bool */
+/* <Field> Repr.value = 2, expr */
+
+/* <Field> Return.location = 0, location */
+/* <Field> Return.value = 1, expr */
+
+/* <Field> Set.location = 0, location */
+/* <Field> Set.parenthesised = 1, bool */
+/* <Field> Set.elts = 2, expr_list */
+
+/* <Field> SetComp.location = 0, location */
+/* <Field> SetComp.parenthesised = 1, bool */
+/* <Field> SetComp.function = 2, Function */
+/* <Field> SetComp.iterable = 3, expr */
+
+/* <Field> Slice.location = 0, location */
+/* <Field> Slice.parenthesised = 1, bool */
+/* <Field> Slice.start = 2, expr */
+/* <Field> Slice.stop = 3, expr */
+/* <Field> Slice.step = 4, expr */
+
+/* <Field> SpecialOperation.location = 0, location */
+/* <Field> SpecialOperation.parenthesised = 1, bool */
+/* <Field> SpecialOperation.name = 2, str */
+/* <Field> SpecialOperation.arguments = 3, expr_list */
+
+/* <Field> Starred.location = 0, location */
+/* <Field> Starred.parenthesised = 1, bool */
+/* <Field> Starred.value = 2, expr */
+/* <Field> Starred.ctx = 3, expr_context */
+
+/* <Field> Str.location = 0, location */
+/* <Field> Str.parenthesised = 1, bool */
+/* <Field> Str.s = 2, str */
+/* <Field> Str.prefix = 3, str */
+/* <Field> Str.implicitly_concatenated_parts = 4, StringPart_list */
+
+/* <Field> StringPart.text = 0, str */
+/* <Field> StringPart.location = 1, location */
+/* <Parent> StringPart = StringPartList  */
+/* <Parent> StringPartList = BytesOrStr  */
+
+/* <Field> Subscript.location = 0, location */
+/* <Field> Subscript.parenthesised = 1, bool */
+/* <Field> Subscript.value = 2, expr */
+/* <Field> Subscript.index = 3, expr */
+/* <Field> Subscript.ctx = 4, expr_context */
+
+/* <Field> TemplateDottedNotation.location = 0, location */
+/* <Field> TemplateDottedNotation.parenthesised = 1, bool */
+/* <Field> TemplateDottedNotation.value = 2, expr */
+/* <Field> TemplateDottedNotation.attr = 3, str */
+/* <Field> TemplateDottedNotation.ctx = 4, expr_context */
+
+/* <Field> TemplateString.location = 0, location */
+/* <Field> TemplateString.parenthesised = 1, bool */
+/* <Field> TemplateString.prefix = 2, str */
+/* <Field> TemplateString.values = 3, expr_list */
+/* <Parent> TemplateString = TemplateStringList  */
+
+/* <Field> TemplateStringPart.location = 0, location */
+/* <Field> TemplateStringPart.parenthesised = 1, bool */
+/* <Field> TemplateStringPart.text = 2, str */
+/* <Parent> TemplateStringList = JoinedTemplateString  */
+
+/* <Field> TemplateWrite.location = 0, location */
+/* <Field> TemplateWrite.value = 1, expr */
+
+/* <Field> Try.location = 0, location */
+/* <Field> Try.body = 1, stmt_list */
+/* <Field> Try.orelse = 2, stmt_list */
+/* <Field> Try.handlers = 3, stmt_list */
+/* <Field> Try.finalbody = 4, stmt_list */
+
+/* <Field> Tuple.location = 0, location */
+/* <Field> Tuple.parenthesised = 1, bool */
+/* <Field> Tuple.elts = 2, expr_list */
+/* <Field> Tuple.ctx = 3, expr_context */
+/* <Parent> Tuple = ParameterList  */
+
+/* <Field> TypeAlias.location = 0, location */
+/* <Field> TypeAlias.name = 1, expr */
+/* <Field> TypeAlias.type_parameters = 2, type_parameter_list */
+/* <Field> TypeAlias.value = 3, expr */
+
+/* <Field> TypeVar.location = 0, location */
+/* <Field> TypeVar.name = 1, expr */
+/* <Field> TypeVar.bound = 2, expr */
+/* <Field> TypeVar.default = 3, expr */
+
+/* <Field> TypeVarTuple.location = 0, location */
+/* <Field> TypeVarTuple.name = 1, expr */
+/* <Field> TypeVarTuple.default = 2, expr */
+
+/* <Field> UnaryExpr.location = 0, location */
+/* <Field> UnaryExpr.parenthesised = 1, bool */
+/* <Field> UnaryExpr.op = 2, unaryop */
+/* <Field> UnaryExpr.operand = 3, expr */
+
+/* <Field> While.location = 0, location */
+/* <Field> While.test = 1, expr */
+/* <Field> While.body = 2, stmt_list */
+/* <Field> While.orelse = 3, stmt_list */
+
+/* <Field> With.location = 0, location */
+/* <Field> With.context_expr = 1, expr */
+/* <Field> With.optional_vars = 2, expr */
+/* <Field> With.body = 3, stmt_list */
+/* <Field> With.is_async = 4, bool */
+
+/* <Field> Yield.location = 0, location */
+/* <Field> Yield.parenthesised = 1, bool */
+/* <Field> Yield.value = 2, expr */
+
+/* <Field> YieldFrom.location = 0, location */
+/* <Field> YieldFrom.parenthesised = 1, bool */
+/* <Field> YieldFrom.value = 2, expr */
+
+/* <Field> Alias.value = 0, expr */
+/* <Field> Alias.asname = 1, expr */
+/* <Parent> Alias = AliasList  */
+/* <Parent> AliasList = Import  */
+
+/* <Field> Arguments.kw_defaults = 0, expr_list */
+/* <Field> Arguments.defaults = 1, expr_list */
+/* <Field> Arguments.annotations = 2, expr_list */
+/* <Field> Arguments.varargannotation = 3, expr */
+/* <Field> Arguments.kwargannotation = 4, expr */
+/* <Field> Arguments.kw_annotations = 5, expr_list */
+/* <Parent> Arguments = ArgumentsParent  */
+/* <Parent> boolean = BoolParent  */
+/* <Parent> Boolop = BoolExpr  */
+/* <Parent> string = Bytes  */
+/* <Parent> Cmpop = CmpopList  */
+/* <Parent> CmpopList = Compare  */
+
+/* <Field> Comprehension.location = 0, location */
+/* <Field> Comprehension.iter = 1, expr */
+/* <Field> Comprehension.target = 2, expr */
+/* <Field> Comprehension.ifs = 3, expr_list */
+/* <Parent> Comprehension = ComprehensionList  */
+/* <Parent> ComprehensionList = ListComp  */
+/* <Parent> DictItem = DictItemList  */
+/* <Parent> DictItemList = DictItemListParent  */
+
+/* <Field> Expr.location = 0, location */
+/* <Field> Expr.parenthesised = 1, bool */
+/* <Parent> Expr = ExprParent  */
+/* <Parent> ExprContext = ExprContextParent  */
+/* <Parent> ExprList = ExprListParent  */
+/* <Parent> int = ImportExpr  */
+
+/* <Field> Keyword.location = 0, location */
+/* <Field> Keyword.value = 1, expr */
+/* <Field> Keyword.arg = 2, str */
+/* <Parent> Location = LocationParent  */
+/* <Parent> string = Num  */
+/* <Parent> Operator = BinaryExpr  */
+/* <Parent> ParameterList = Function  */
+
+/* <Field> Pattern.location = 0, location */
+/* <Field> Pattern.parenthesised = 1, bool */
+/* <Parent> Pattern = PatternParent  */
+/* <Parent> PatternList = PatternListParent  */
+
+/* <Field> Stmt.location = 0, location */
+/* <Parent> Stmt = StmtList  */
+/* <Parent> StmtList = StmtListParent  */
+/* <Parent> string = StrParent  */
+/* <Parent> StringList = StrListParent  */
+
+/* <Field> TypeParameter.location = 0, location */
+/* <Parent> TypeParameter = TypeParameterList  */
+/* <Parent> TypeParameterList = TypeParameterListParent  */
+/* <Parent> Unaryop = UnaryExpr  */
+/* <Parent> Variable = VariableParent  */
+py_Classes(unique int id : @py_Class,
+    unique int parent : @py_ClassExpr ref);
+
+py_Functions(unique int id : @py_Function,
+    unique int parent : @py_Function_parent ref);
+
+py_Modules(unique int id : @py_Module);
+
+py_StringParts(unique int id : @py_StringPart,
+    int parent : @py_StringPart_list ref,
+    int idx : int ref);
+
+py_StringPart_lists(unique int id : @py_StringPart_list,
+    unique int parent : @py_Bytes_or_Str ref);
+
+py_TemplateString_lists(unique int id : @py_TemplateString_list,
+    unique int parent : @py_JoinedTemplateString ref);
+
+py_aliases(unique int id : @py_alias,
+    int parent : @py_alias_list ref,
+    int idx : int ref);
+
+py_alias_lists(unique int id : @py_alias_list,
+    unique int parent : @py_Import ref);
+
+py_arguments(unique int id : @py_arguments,
+    unique int parent : @py_arguments_parent ref);
+
+py_bools(int parent : @py_bool_parent ref,
+    int idx : int ref);
+
+py_boolops(unique int id : @py_boolop,
+    int kind: int ref,
+    unique int parent : @py_BoolExpr ref);
+
+py_bytes(varchar(1) id : string ref,
+    int parent : @py_Bytes ref,
+    int idx : int ref);
+
+py_cmpops(unique int id : @py_cmpop,
+    int kind: int ref,
+    int parent : @py_cmpop_list ref,
+    int idx : int ref);
+
+py_cmpop_lists(unique int id : @py_cmpop_list,
+    unique int parent : @py_Compare ref);
+
+py_comprehensions(unique int id : @py_comprehension,
+    int parent : @py_comprehension_list ref,
+    int idx : int ref);
+
+py_comprehension_lists(unique int id : @py_comprehension_list,
+    unique int parent : @py_ListComp ref);
+
+py_dict_items(unique int id : @py_dict_item,
+    int kind: int ref,
+    int parent : @py_dict_item_list ref,
+    int idx : int ref);
+
+py_dict_item_lists(unique int id : @py_dict_item_list,
+    unique int parent : @py_dict_item_list_parent ref);
+
+py_exprs(unique int id : @py_expr,
+    int kind: int ref,
+    int parent : @py_expr_parent ref,
+    int idx : int ref);
+
+py_expr_contexts(unique int id : @py_expr_context,
+    int kind: int ref,
+    unique int parent : @py_expr_context_parent ref);
+
+py_expr_lists(unique int id : @py_expr_list,
+    int parent : @py_expr_list_parent ref,
+    int idx : int ref);
+
+py_ints(int id : int ref,
+    unique int parent : @py_ImportExpr ref);
+
+py_locations(unique int id : @location ref,
+    unique int parent : @py_location_parent ref);
+
+py_numbers(varchar(1) id : string ref,
+    int parent : @py_Num ref,
+    int idx : int ref);
+
+py_operators(unique int id : @py_operator,
+    int kind: int ref,
+    unique int parent : @py_BinaryExpr ref);
+
+py_parameter_lists(unique int id : @py_parameter_list,
+    unique int parent : @py_Function ref);
+
+py_patterns(unique int id : @py_pattern,
+    int kind: int ref,
+    int parent : @py_pattern_parent ref,
+    int idx : int ref);
+
+py_pattern_lists(unique int id : @py_pattern_list,
+    int parent : @py_pattern_list_parent ref,
+    int idx : int ref);
+
+py_stmts(unique int id : @py_stmt,
+    int kind: int ref,
+    int parent : @py_stmt_list ref,
+    int idx : int ref);
+
+py_stmt_lists(unique int id : @py_stmt_list,
+    int parent : @py_stmt_list_parent ref,
+    int idx : int ref);
+
+py_strs(varchar(1) id : string ref,
+    int parent : @py_str_parent ref,
+    int idx : int ref);
+
+py_str_lists(unique int id : @py_str_list,
+    unique int parent : @py_str_list_parent ref);
+
+py_type_parameters(unique int id : @py_type_parameter,
+    int kind: int ref,
+    int parent : @py_type_parameter_list ref,
+    int idx : int ref);
+
+py_type_parameter_lists(unique int id : @py_type_parameter_list,
+    unique int parent : @py_type_parameter_list_parent ref);
+
+py_unaryops(unique int id : @py_unaryop,
+    int kind: int ref,
+    unique int parent : @py_UnaryExpr ref);
+
+py_variables(int id : @py_variable ref,
+    unique int parent : @py_variable_parent ref);
+
+case @py_boolop.kind of
+    0 = @py_And
+|   1 = @py_Or;
+
+case @py_cmpop.kind of
+    0 = @py_Eq
+|   1 = @py_Gt
+|   2 = @py_GtE
+|   3 = @py_In
+|   4 = @py_Is
+|   5 = @py_IsNot
+|   6 = @py_Lt
+|   7 = @py_LtE
+|   8 = @py_NotEq
+|   9 = @py_NotIn;
+
+case @py_dict_item.kind of
+    0 = @py_DictUnpacking
+|   1 = @py_KeyValuePair
+|   2 = @py_keyword;
+
+case @py_expr.kind of
+    0 = @py_Attribute
+|   1 = @py_BinaryExpr
+|   2 = @py_BoolExpr
+|   3 = @py_Bytes
+|   4 = @py_Call
+|   5 = @py_ClassExpr
+|   6 = @py_Compare
+|   7 = @py_Dict
+|   8 = @py_DictComp
+|   9 = @py_Ellipsis
+|   10 = @py_FunctionExpr
+|   11 = @py_GeneratorExp
+|   12 = @py_IfExp
+|   13 = @py_ImportExpr
+|   14 = @py_ImportMember
+|   15 = @py_Lambda
+|   16 = @py_List
+|   17 = @py_ListComp
+|   18 = @py_Guard
+|   19 = @py_Name
+|   20 = @py_Num
+|   21 = @py_Repr
+|   22 = @py_Set
+|   23 = @py_SetComp
+|   24 = @py_Slice
+|   25 = @py_Starred
+|   26 = @py_Str
+|   27 = @py_Subscript
+|   28 = @py_Tuple
+|   29 = @py_UnaryExpr
+|   30 = @py_Yield
+|   31 = @py_YieldFrom
+|   32 = @py_TemplateDottedNotation
+|   33 = @py_Filter
+|   34 = @py_PlaceHolder
+|   35 = @py_Await
+|   36 = @py_Fstring
+|   37 = @py_FormattedValue
+|   38 = @py_AssignExpr
+|   39 = @py_SpecialOperation
+|   40 = @py_TemplateString
+|   41 = @py_JoinedTemplateString
+|   42 = @py_TemplateStringPart;
+
+case @py_expr_context.kind of
+    0 = @py_AugLoad
+|   1 = @py_AugStore
+|   2 = @py_Del
+|   3 = @py_Load
+|   4 = @py_Param
+|   5 = @py_Store;
+
+case @py_operator.kind of
+    0 = @py_Add
+|   1 = @py_BitAnd
+|   2 = @py_BitOr
+|   3 = @py_BitXor
+|   4 = @py_Div
+|   5 = @py_FloorDiv
+|   6 = @py_LShift
+|   7 = @py_Mod
+|   8 = @py_Mult
+|   9 = @py_Pow
+|   10 = @py_RShift
+|   11 = @py_Sub
+|   12 = @py_MatMult;
+
+case @py_pattern.kind of
+    0 = @py_MatchAsPattern
+|   1 = @py_MatchOrPattern
+|   2 = @py_MatchLiteralPattern
+|   3 = @py_MatchCapturePattern
+|   4 = @py_MatchWildcardPattern
+|   5 = @py_MatchValuePattern
+|   6 = @py_MatchSequencePattern
+|   7 = @py_MatchStarPattern
+|   8 = @py_MatchMappingPattern
+|   9 = @py_MatchDoubleStarPattern
+|   10 = @py_MatchKeyValuePattern
+|   11 = @py_MatchClassPattern
+|   12 = @py_MatchKeywordPattern;
+
+case @py_stmt.kind of
+    0 = @py_Assert
+|   1 = @py_Assign
+|   2 = @py_AugAssign
+|   3 = @py_Break
+|   4 = @py_Continue
+|   5 = @py_Delete
+|   6 = @py_ExceptStmt
+|   7 = @py_ExceptGroupStmt
+|   8 = @py_Exec
+|   9 = @py_Expr_stmt
+|   10 = @py_For
+|   11 = @py_Global
+|   12 = @py_If
+|   13 = @py_Import
+|   14 = @py_ImportStar
+|   15 = @py_MatchStmt
+|   16 = @py_Case
+|   17 = @py_Nonlocal
+|   18 = @py_Pass
+|   19 = @py_Print
+|   20 = @py_Raise
+|   21 = @py_Return
+|   22 = @py_Try
+|   23 = @py_While
+|   24 = @py_With
+|   25 = @py_TemplateWrite
+|   26 = @py_AnnAssign
+|   27 = @py_TypeAlias;
+
+case @py_type_parameter.kind of
+    0 = @py_ParamSpec
+|   1 = @py_TypeVar
+|   2 = @py_TypeVarTuple;
+
+case @py_unaryop.kind of
+    0 = @py_Invert
+|   1 = @py_Not
+|   2 = @py_UAdd
+|   3 = @py_USub;
+
+@py_Bytes_or_Str = @py_Bytes | @py_Str;
+
+@py_Function_parent = @py_DictComp | @py_FunctionExpr | @py_GeneratorExp | @py_Lambda | @py_ListComp | @py_SetComp;
+
+@py_arguments_parent = @py_FunctionExpr | @py_Lambda;
+
+@py_ast_node = @py_Class | @py_Function | @py_Module | @py_StringPart | @py_comprehension | @py_dict_item | @py_expr | @py_pattern | @py_stmt | @py_type_parameter;
+
+@py_bool_parent = @py_For | @py_Function | @py_Print | @py_With | @py_expr | @py_pattern;
+
+@py_dict_item_list_parent = @py_Call | @py_ClassExpr | @py_Dict;
+
+@py_expr_context_parent = @py_Attribute | @py_List | @py_Name | @py_PlaceHolder | @py_Starred | @py_Subscript | @py_TemplateDottedNotation | @py_Tuple;
+
+@py_expr_list_parent = @py_Assign | @py_BoolExpr | @py_Call | @py_ClassExpr | @py_Compare | @py_Delete | @py_Fstring | @py_Function | @py_List | @py_Print | @py_Set | @py_SpecialOperation | @py_TemplateString | @py_Tuple | @py_arguments | @py_comprehension;
+
+@py_expr_or_stmt = @py_expr | @py_stmt;
+
+@py_expr_parent = @py_AnnAssign | @py_Assert | @py_Assign | @py_AssignExpr | @py_Attribute | @py_AugAssign | @py_Await | @py_BinaryExpr | @py_Call | @py_Case | @py_Compare | @py_DictComp | @py_DictUnpacking | @py_ExceptGroupStmt | @py_ExceptStmt | @py_Exec | @py_Expr_stmt | @py_Filter | @py_For | @py_FormattedValue | @py_Function | @py_FunctionExpr | @py_GeneratorExp | @py_Guard | @py_If | @py_IfExp | @py_ImportMember | @py_ImportStar | @py_KeyValuePair | @py_ListComp | @py_MatchAsPattern | @py_MatchCapturePattern | @py_MatchClassPattern | @py_MatchKeywordPattern | @py_MatchLiteralPattern | @py_MatchStmt | @py_MatchValuePattern | @py_ParamSpec | @py_Print | @py_Raise | @py_Repr | @py_Return | @py_SetComp | @py_Slice | @py_Starred | @py_Subscript | @py_TemplateDottedNotation | @py_TemplateString_list | @py_TemplateWrite | @py_TypeAlias | @py_TypeVar | @py_TypeVarTuple | @py_UnaryExpr | @py_While | @py_With | @py_Yield | @py_YieldFrom | @py_alias | @py_arguments | @py_comprehension | @py_expr_list | @py_keyword | @py_parameter_list;
+
+@py_location_parent = @py_DictUnpacking | @py_KeyValuePair | @py_StringPart | @py_comprehension | @py_expr | @py_keyword | @py_pattern | @py_stmt | @py_type_parameter;
+
+@py_parameter = @py_Name | @py_Tuple;
+
+@py_pattern_list_parent = @py_MatchClassPattern | @py_MatchMappingPattern | @py_MatchOrPattern | @py_MatchSequencePattern;
+
+@py_pattern_parent = @py_Case | @py_MatchAsPattern | @py_MatchDoubleStarPattern | @py_MatchKeyValuePattern | @py_MatchKeywordPattern | @py_MatchStarPattern | @py_pattern_list;
+
+@py_scope = @py_Class | @py_Function | @py_Module;
+
+@py_stmt_list_parent = @py_Case | @py_Class | @py_ExceptGroupStmt | @py_ExceptStmt | @py_For | @py_Function | @py_If | @py_MatchStmt | @py_Module | @py_Try | @py_While | @py_With;
+
+@py_str_list_parent = @py_Global | @py_Nonlocal;
+
+@py_str_parent = @py_Attribute | @py_Class | @py_ClassExpr | @py_FormattedValue | @py_Function | @py_FunctionExpr | @py_ImportExpr | @py_ImportMember | @py_Module | @py_SpecialOperation | @py_Str | @py_StringPart | @py_TemplateDottedNotation | @py_TemplateString | @py_TemplateStringPart | @py_keyword | @py_str_list;
+
+@py_type_parameter_list_parent = @py_ClassExpr | @py_Function | @py_TypeAlias;
+
+@py_variable_parent = @py_Name | @py_PlaceHolder;
+
+
+/*
+ * End of auto-generated part
+ */
+
+
+
+/* Map relative names to absolute names for imports */
+py_absolute_names(int module : @py_Module ref,
+                  varchar(1) relname : string ref,
+                  varchar(1) absname : string ref);
+
+py_exports(int id : @py_Module ref,
+           varchar(1) name : string ref);
+
+/* Successor information */
+py_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_true_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_exception_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_false_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_flow_bb_node(unique int flownode : @py_flow_node,
+             int realnode : @py_ast_node ref,
+             int basicblock : @py_flow_node ref,
+             int index : int ref);
+
+py_scope_flow(int flow : @py_flow_node ref,
+              int scope : @py_scope ref,
+              int kind : int ref);
+
+py_idoms(unique int node : @py_flow_node ref,
+         int immediate_dominator : @py_flow_node ref);
+
+py_ssa_phi(int phi : @py_ssa_var ref,
+           int arg: @py_ssa_var ref);
+
+py_ssa_var(unique int id : @py_ssa_var,
+            int var : @py_variable ref);
+
+py_ssa_use(int node: @py_flow_node ref,
+           int var : @py_ssa_var ref);
+
+py_ssa_defn(unique int id : @py_ssa_var ref,
+                  int node: @py_flow_node ref);
+
+@py_base_var = @py_variable | @py_ssa_var;
+
+py_scopes(unique int node : @py_expr_or_stmt ref,
+         int scope : @py_scope ref);
+
+py_scope_location(unique int id : @location ref,
+                   unique int scope : @py_scope ref);
+
+py_flags_versioned(varchar(1) name : string ref,
+                   varchar(1) value : string ref,
+                   varchar(1) version : string ref);
+
+py_syntax_error_versioned(unique int id : @location ref,
+                varchar(1) message : string ref,
+                varchar(1) version : string ref);
+
+py_comments(unique int id : @py_comment,
+           varchar(1) text : string ref,
+           unique int location : @location ref);
+
+/* Type information support */
+
+py_cobjects(unique int obj : @py_cobject);
+
+py_cobjecttypes(unique int obj : @py_cobject ref,
+                int typeof : @py_cobject ref);
+
+py_cobjectnames(unique int obj : @py_cobject ref,
+                varchar(1) name : string ref);
+
+/* Kind should be 0 for introspection, > 0 from source, as follows:
+   1 from C extension source
+ */
+py_cobject_sources(int obj : @py_cobject ref,
+                  int kind : int ref);
+
+py_cmembers_versioned(int object : @py_cobject ref,
+                      varchar(1) name : string ref,
+                      int member : @py_cobject ref,
+                      varchar(1) version : string ref);
+
+py_citems(int object : @py_cobject ref,
+            int index : int ref,
+            int member : @py_cobject ref);
+
+ext_argtype(int funcid : @py_object ref,
+            int arg : int ref,
+            int typeid : @py_object ref);
+
+ext_rettype(int funcid : @py_object ref,
+            int typeid : @py_object ref);
+
+ext_proptype(int propid : @py_object ref,
+             int typeid : @py_object ref);
+
+ext_argreturn(int funcid : @py_object ref,
+              int arg : int ref);
+
+py_special_objects(unique int obj : @py_cobject ref,
+                   unique varchar(1) name : string ref);
+
+py_decorated_object(int object : @py_object ref,
+                    int level: int ref);
+
+@py_object = @py_cobject | @py_flow_node;
+
+@py_source_element = @py_ast_node | @container;
+
+/** The union of all Python database entities */
+@top =
+  @py_source_element | @py_object | @py_base_var | @location | @py_line | @py_comment |
+      @py_expr_parent | @py_expr_context |
+      @py_operator | @py_boolop | @py_cmpop | @py_unaryop |
+      @py_cmpop_list | @py_alias_list | @py_StringPart_list | @py_comprehension_list | @py_dict_item_list | @py_pattern_list | @py_stmt_list | @py_str_list | @py_type_parameter_list |
+      @externalDefect | @externalMetric | @externalDataElement | @duplication_or_similarity | @svnentry |
+      @xmllocatable | @yaml_locatable;
diff --git a/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/semmlecode.dbscheme b/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/semmlecode.dbscheme
new file mode 100644
index 000000000000..8d257a4a9bc7
--- /dev/null
+++ b/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/semmlecode.dbscheme
@@ -0,0 +1,1282 @@
+/*
+ *      This dbscheme is auto-generated by 'semmle/dbscheme_gen.py'.
+ *      WARNING: Any modifications to this file will be lost.
+ *      Relations can be changed by modifying master.py or
+ *      by adding rules to dbscheme.template
+ */
+
+/* This is a dummy line to alter the dbscheme, so we can make a database upgrade
+ * without actually changing any of the dbscheme predicates. It contains a date
+ * to allow for such updates in the future as well.
+ *
+ * 2020-07-02
+ *
+ * DO NOT remove this comment carelessly, since it can revert the dbscheme back to a
+ * previously seen state (matching a previously seen SHA), which would make the upgrade
+ * mechanism not work properly.
+ */
+
+/*- DEPRECATED: External defects and metrics -*/
+
+externalDefects(
+  unique int id : @externalDefect,
+  varchar(900) queryPath : string ref,
+  int location : @location ref,
+  varchar(900) message : string ref,
+  float severity : float ref
+);
+
+externalMetrics(
+  unique int id : @externalMetric,
+  varchar(900) queryPath : string ref,
+  int location : @location ref,
+  float value : float ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit the tuple `databaseMetadata("isOverlay", "true")`,
+ * along with an `overlayChangedFiles` tuple for each new/modified/deleted file,
+ * when building an overlay database, and these can be used by the discard predicates.
+ */
+databaseMetadata(
+  string metadataKey : string ref,
+  string value : string ref
+);
+
+overlayChangedFiles(
+  string path : string ref
+);
+
+/*- DEPRECATED: Snapshot date -*/
+
+snapshotDate(unique date snapshotDate : date ref);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- DEPRECATED: Duplicate code -*/
+
+duplicateCode(
+  unique int id : @duplication,
+  string relativePath : string ref,
+  int equivClass : int ref
+);
+
+similarCode(
+  unique int id : @similarity,
+  string relativePath : string ref,
+  int equivClass : int ref
+);
+
+@duplication_or_similarity = @duplication | @similarity
+
+tokens(
+  int id : @duplication_or_similarity ref,
+  int offset : int ref,
+  int beginLine : int ref,
+  int beginColumn : int ref,
+  int endLine : int ref,
+  int endColumn : int ref
+);
+
+/*- DEPRECATED: Version control data -*/
+
+svnentries(
+  unique int id : @svnentry,
+  string revision : string ref,
+  string author : string ref,
+  date revisionDate : date ref,
+  int changeSize : int ref
+)
+
+svnaffectedfiles(
+  int id : @svnentry ref,
+  int file : @file ref,
+  string action : string ref
+)
+
+svnentrymsg(
+  unique int id : @svnentry ref,
+  string message : string ref
+)
+
+svnchurn(
+  int commit : @svnentry ref,
+  int file : @file ref,
+  int addedLines : int ref,
+  int deletedLines : int ref
+)
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Python dbscheme -*/
+
+/*
+ * Line metrics
+ */
+py_codelines(int id : @py_scope ref,
+             int count : int ref);
+
+py_commentlines(int id : @py_scope ref,
+                int count : int ref);
+
+py_docstringlines(int id : @py_scope ref,
+                int count : int ref);
+
+py_alllines(int id : @py_scope ref,
+                int count : int ref);
+
+/****************************
+        Python dbscheme
+****************************/
+
+@sourceline = @file | @py_Module | @xmllocatable;
+
+@location = @location_ast | @location_default ;
+
+locations_ast(unique int id: @location_ast,
+          int module: @py_Module ref,
+          int beginLine: int ref,
+          int beginColumn: int ref,
+          int endLine: int ref,
+          int endColumn: int ref);
+
+file_contents(unique int file: @file ref, string contents: string ref);
+
+py_module_path(int module: @py_Module ref, int file: @container ref);
+
+variable(unique int id : @py_variable,
+         int scope : @py_scope ref,
+         varchar(1) name : string ref);
+
+py_line_lengths(unique int id : @py_line,
+                int file: @py_Module ref,
+                int line : int ref,
+                int length : int ref);
+
+py_extracted_version(int module : @py_Module ref,
+                     varchar(1) version : string ref);
+
+/* AUTO GENERATED PART STARTS HERE */
+
+
+/* <Field> AnnAssign.location = 0, location */
+/* <Field> AnnAssign.value = 1, expr */
+/* <Field> AnnAssign.annotation = 2, expr */
+/* <Field> AnnAssign.target = 3, expr */
+
+/* <Field> Assert.location = 0, location */
+/* <Field> Assert.test = 1, expr */
+/* <Field> Assert.msg = 2, expr */
+
+/* <Field> Assign.location = 0, location */
+/* <Field> Assign.value = 1, expr */
+/* <Field> Assign.targets = 2, expr_list */
+
+/* <Field> AssignExpr.location = 0, location */
+/* <Field> AssignExpr.parenthesised = 1, bool */
+/* <Field> AssignExpr.value = 2, expr */
+/* <Field> AssignExpr.target = 3, expr */
+
+/* <Field> Attribute.location = 0, location */
+/* <Field> Attribute.parenthesised = 1, bool */
+/* <Field> Attribute.value = 2, expr */
+/* <Field> Attribute.attr = 3, str */
+/* <Field> Attribute.ctx = 4, expr_context */
+
+/* <Field> AugAssign.location = 0, location */
+/* <Field> AugAssign.operation = 1, BinOp */
+
+/* <Field> Await.location = 0, location */
+/* <Field> Await.parenthesised = 1, bool */
+/* <Field> Await.value = 2, expr */
+
+/* <Field> BinaryExpr.location = 0, location */
+/* <Field> BinaryExpr.parenthesised = 1, bool */
+/* <Field> BinaryExpr.left = 2, expr */
+/* <Field> BinaryExpr.op = 3, operator */
+/* <Field> BinaryExpr.right = 4, expr */
+/* <Parent> BinaryExpr = AugAssign  */
+
+/* <Field> BoolExpr.location = 0, location */
+/* <Field> BoolExpr.parenthesised = 1, bool */
+/* <Field> BoolExpr.op = 2, boolop */
+/* <Field> BoolExpr.values = 3, expr_list */
+
+/* <Field> Break.location = 0, location */
+
+/* <Field> Bytes.location = 0, location */
+/* <Field> Bytes.parenthesised = 1, bool */
+/* <Field> Bytes.s = 2, bytes */
+/* <Field> Bytes.prefix = 3, bytes */
+/* <Field> Bytes.implicitly_concatenated_parts = 4, StringPart_list */
+
+/* <Field> Call.location = 0, location */
+/* <Field> Call.parenthesised = 1, bool */
+/* <Field> Call.func = 2, expr */
+/* <Field> Call.positional_args = 3, expr_list */
+/* <Field> Call.named_args = 4, dict_item_list */
+
+/* <Field> Case.location = 0, location */
+/* <Field> Case.pattern = 1, pattern */
+/* <Field> Case.guard = 2, expr */
+/* <Field> Case.body = 3, stmt_list */
+
+/* <Field> Class.name = 0, str */
+/* <Field> Class.body = 1, stmt_list */
+/* <Parent> Class = ClassExpr  */
+
+/* <Field> ClassExpr.location = 0, location */
+/* <Field> ClassExpr.parenthesised = 1, bool */
+/* <Field> ClassExpr.name = 2, str */
+/* <Field> ClassExpr.bases = 3, expr_list */
+/* <Field> ClassExpr.keywords = 4, dict_item_list */
+/* <Field> ClassExpr.inner_scope = 5, Class */
+/* <Field> ClassExpr.type_parameters = 6, type_parameter_list */
+
+/* <Field> Compare.location = 0, location */
+/* <Field> Compare.parenthesised = 1, bool */
+/* <Field> Compare.left = 2, expr */
+/* <Field> Compare.ops = 3, cmpop_list */
+/* <Field> Compare.comparators = 4, expr_list */
+
+/* <Field> Continue.location = 0, location */
+
+/* <Field> Delete.location = 0, location */
+/* <Field> Delete.targets = 1, expr_list */
+
+/* <Field> Dict.location = 0, location */
+/* <Field> Dict.parenthesised = 1, bool */
+/* <Field> Dict.items = 2, dict_item_list */
+
+/* <Field> DictComp.location = 0, location */
+/* <Field> DictComp.parenthesised = 1, bool */
+/* <Field> DictComp.function = 2, Function */
+/* <Field> DictComp.iterable = 3, expr */
+
+/* <Field> DictUnpacking.location = 0, location */
+/* <Field> DictUnpacking.value = 1, expr */
+
+/* <Field> Ellipsis.location = 0, location */
+/* <Field> Ellipsis.parenthesised = 1, bool */
+
+/* <Field> ExceptGroupStmt.location = 0, location */
+/* <Field> ExceptGroupStmt.type = 1, expr */
+/* <Field> ExceptGroupStmt.name = 2, expr */
+/* <Field> ExceptGroupStmt.body = 3, stmt_list */
+
+/* <Field> ExceptStmt.location = 0, location */
+/* <Field> ExceptStmt.type = 1, expr */
+/* <Field> ExceptStmt.name = 2, expr */
+/* <Field> ExceptStmt.body = 3, stmt_list */
+
+/* <Field> Exec.location = 0, location */
+/* <Field> Exec.body = 1, expr */
+/* <Field> Exec.globals = 2, expr */
+/* <Field> Exec.locals = 3, expr */
+
+/* <Field> ExprStmt.location = 0, location */
+/* <Field> ExprStmt.value = 1, expr */
+
+/* <Field> Filter.location = 0, location */
+/* <Field> Filter.parenthesised = 1, bool */
+/* <Field> Filter.value = 2, expr */
+/* <Field> Filter.filter = 3, expr */
+
+/* <Field> For.location = 0, location */
+/* <Field> For.target = 1, expr */
+/* <Field> For.iter = 2, expr */
+/* <Field> For.body = 3, stmt_list */
+/* <Field> For.orelse = 4, stmt_list */
+/* <Field> For.is_async = 5, bool */
+
+/* <Field> FormattedValue.location = 0, location */
+/* <Field> FormattedValue.parenthesised = 1, bool */
+/* <Field> FormattedValue.value = 2, expr */
+/* <Field> FormattedValue.conversion = 3, str */
+/* <Field> FormattedValue.format_spec = 4, JoinedStr */
+
+/* <Field> Function.name = 0, str */
+/* <Field> Function.args = 1, parameter_list */
+/* <Field> Function.vararg = 2, expr */
+/* <Field> Function.kwonlyargs = 3, expr_list */
+/* <Field> Function.kwarg = 4, expr */
+/* <Field> Function.body = 5, stmt_list */
+/* <Field> Function.is_async = 6, bool */
+/* <Field> Function.type_parameters = 7, type_parameter_list */
+/* <Parent> Function = FunctionParent  */
+
+/* <Field> FunctionExpr.location = 0, location */
+/* <Field> FunctionExpr.parenthesised = 1, bool */
+/* <Field> FunctionExpr.name = 2, str */
+/* <Field> FunctionExpr.args = 3, arguments */
+/* <Field> FunctionExpr.returns = 4, expr */
+/* <Field> FunctionExpr.inner_scope = 5, Function */
+
+/* <Field> GeneratorExp.location = 0, location */
+/* <Field> GeneratorExp.parenthesised = 1, bool */
+/* <Field> GeneratorExp.function = 2, Function */
+/* <Field> GeneratorExp.iterable = 3, expr */
+
+/* <Field> Global.location = 0, location */
+/* <Field> Global.names = 1, str_list */
+
+/* <Field> Guard.location = 0, location */
+/* <Field> Guard.parenthesised = 1, bool */
+/* <Field> Guard.test = 2, expr */
+
+/* <Field> If.location = 0, location */
+/* <Field> If.test = 1, expr */
+/* <Field> If.body = 2, stmt_list */
+/* <Field> If.orelse = 3, stmt_list */
+
+/* <Field> IfExp.location = 0, location */
+/* <Field> IfExp.parenthesised = 1, bool */
+/* <Field> IfExp.test = 2, expr */
+/* <Field> IfExp.body = 3, expr */
+/* <Field> IfExp.orelse = 4, expr */
+
+/* <Field> Import.location = 0, location */
+/* <Field> Import.names = 1, alias_list */
+
+/* <Field> ImportExpr.location = 0, location */
+/* <Field> ImportExpr.parenthesised = 1, bool */
+/* <Field> ImportExpr.level = 2, int */
+/* <Field> ImportExpr.name = 3, str */
+/* <Field> ImportExpr.top = 4, bool */
+
+/* <Field> ImportStar.location = 0, location */
+/* <Field> ImportStar.module = 1, expr */
+
+/* <Field> ImportMember.location = 0, location */
+/* <Field> ImportMember.parenthesised = 1, bool */
+/* <Field> ImportMember.module = 2, expr */
+/* <Field> ImportMember.name = 3, str */
+
+/* <Field> Fstring.location = 0, location */
+/* <Field> Fstring.parenthesised = 1, bool */
+/* <Field> Fstring.values = 2, expr_list */
+/* <Parent> Fstring = FormattedValue  */
+
+/* <Field> JoinedTemplateString.location = 0, location */
+/* <Field> JoinedTemplateString.parenthesised = 1, bool */
+/* <Field> JoinedTemplateString.strings = 2, TemplateString_list */
+
+/* <Field> KeyValuePair.location = 0, location */
+/* <Field> KeyValuePair.value = 1, expr */
+/* <Field> KeyValuePair.key = 2, expr */
+
+/* <Field> Lambda.location = 0, location */
+/* <Field> Lambda.parenthesised = 1, bool */
+/* <Field> Lambda.args = 2, arguments */
+/* <Field> Lambda.inner_scope = 3, Function */
+
+/* <Field> List.location = 0, location */
+/* <Field> List.parenthesised = 1, bool */
+/* <Field> List.elts = 2, expr_list */
+/* <Field> List.ctx = 3, expr_context */
+
+/* <Field> ListComp.location = 0, location */
+/* <Field> ListComp.parenthesised = 1, bool */
+/* <Field> ListComp.function = 2, Function */
+/* <Field> ListComp.iterable = 3, expr */
+/* <Field> ListComp.generators = 4, comprehension_list */
+/* <Field> ListComp.elt = 5, expr */
+
+/* <Field> MatchStmt.location = 0, location */
+/* <Field> MatchStmt.subject = 1, expr */
+/* <Field> MatchStmt.cases = 2, stmt_list */
+
+/* <Field> MatchAsPattern.location = 0, location */
+/* <Field> MatchAsPattern.parenthesised = 1, bool */
+/* <Field> MatchAsPattern.pattern = 2, pattern */
+/* <Field> MatchAsPattern.alias = 3, expr */
+
+/* <Field> MatchCapturePattern.location = 0, location */
+/* <Field> MatchCapturePattern.parenthesised = 1, bool */
+/* <Field> MatchCapturePattern.variable = 2, expr */
+
+/* <Field> MatchClassPattern.location = 0, location */
+/* <Field> MatchClassPattern.parenthesised = 1, bool */
+/* <Field> MatchClassPattern.class = 2, expr */
+/* <Field> MatchClassPattern.class_name = 3, expr */
+/* <Field> MatchClassPattern.positional = 4, pattern_list */
+/* <Field> MatchClassPattern.keyword = 5, pattern_list */
+
+/* <Field> MatchDoubleStarPattern.location = 0, location */
+/* <Field> MatchDoubleStarPattern.parenthesised = 1, bool */
+/* <Field> MatchDoubleStarPattern.target = 2, pattern */
+
+/* <Field> MatchKeyValuePattern.location = 0, location */
+/* <Field> MatchKeyValuePattern.parenthesised = 1, bool */
+/* <Field> MatchKeyValuePattern.key = 2, pattern */
+/* <Field> MatchKeyValuePattern.value = 3, pattern */
+
+/* <Field> MatchKeywordPattern.location = 0, location */
+/* <Field> MatchKeywordPattern.parenthesised = 1, bool */
+/* <Field> MatchKeywordPattern.attribute = 2, expr */
+/* <Field> MatchKeywordPattern.value = 3, pattern */
+
+/* <Field> MatchLiteralPattern.location = 0, location */
+/* <Field> MatchLiteralPattern.parenthesised = 1, bool */
+/* <Field> MatchLiteralPattern.literal = 2, expr */
+
+/* <Field> MatchMappingPattern.location = 0, location */
+/* <Field> MatchMappingPattern.parenthesised = 1, bool */
+/* <Field> MatchMappingPattern.mappings = 2, pattern_list */
+
+/* <Field> MatchOrPattern.location = 0, location */
+/* <Field> MatchOrPattern.parenthesised = 1, bool */
+/* <Field> MatchOrPattern.patterns = 2, pattern_list */
+
+/* <Field> MatchSequencePattern.location = 0, location */
+/* <Field> MatchSequencePattern.parenthesised = 1, bool */
+/* <Field> MatchSequencePattern.patterns = 2, pattern_list */
+
+/* <Field> MatchStarPattern.location = 0, location */
+/* <Field> MatchStarPattern.parenthesised = 1, bool */
+/* <Field> MatchStarPattern.target = 2, pattern */
+
+/* <Field> MatchValuePattern.location = 0, location */
+/* <Field> MatchValuePattern.parenthesised = 1, bool */
+/* <Field> MatchValuePattern.value = 2, expr */
+
+/* <Field> MatchWildcardPattern.location = 0, location */
+/* <Field> MatchWildcardPattern.parenthesised = 1, bool */
+
+/* <Field> Module.name = 0, str */
+/* <Field> Module.hash = 1, str */
+/* <Field> Module.body = 2, stmt_list */
+/* <Field> Module.kind = 3, str */
+
+/* <Field> Name.location = 0, location */
+/* <Field> Name.parenthesised = 1, bool */
+/* <Field> Name.variable = 2, variable */
+/* <Field> Name.ctx = 3, expr_context */
+/* <Parent> Name = ParameterList  */
+
+/* <Field> Nonlocal.location = 0, location */
+/* <Field> Nonlocal.names = 1, str_list */
+
+/* <Field> Num.location = 0, location */
+/* <Field> Num.parenthesised = 1, bool */
+/* <Field> Num.n = 2, number */
+/* <Field> Num.text = 3, number */
+
+/* <Field> ParamSpec.location = 0, location */
+/* <Field> ParamSpec.name = 1, expr */
+/* <Field> ParamSpec.default = 2, expr */
+
+/* <Field> Pass.location = 0, location */
+
+/* <Field> PlaceHolder.location = 0, location */
+/* <Field> PlaceHolder.parenthesised = 1, bool */
+/* <Field> PlaceHolder.variable = 2, variable */
+/* <Field> PlaceHolder.ctx = 3, expr_context */
+
+/* <Field> Print.location = 0, location */
+/* <Field> Print.dest = 1, expr */
+/* <Field> Print.values = 2, expr_list */
+/* <Field> Print.nl = 3, bool */
+
+/* <Field> Raise.location = 0, location */
+/* <Field> Raise.exc = 1, expr */
+/* <Field> Raise.cause = 2, expr */
+/* <Field> Raise.type = 3, expr */
+/* <Field> Raise.inst = 4, expr */
+/* <Field> Raise.tback = 5, expr */
+
+/* <Field> Repr.location = 0, location */
+/* <Field> Repr.parenthesised = 1, bool */
+/* <Field> Repr.value = 2, expr */
+
+/* <Field> Return.location = 0, location */
+/* <Field> Return.value = 1, expr */
+
+/* <Field> Set.location = 0, location */
+/* <Field> Set.parenthesised = 1, bool */
+/* <Field> Set.elts = 2, expr_list */
+
+/* <Field> SetComp.location = 0, location */
+/* <Field> SetComp.parenthesised = 1, bool */
+/* <Field> SetComp.function = 2, Function */
+/* <Field> SetComp.iterable = 3, expr */
+
+/* <Field> Slice.location = 0, location */
+/* <Field> Slice.parenthesised = 1, bool */
+/* <Field> Slice.start = 2, expr */
+/* <Field> Slice.stop = 3, expr */
+/* <Field> Slice.step = 4, expr */
+
+/* <Field> SpecialOperation.location = 0, location */
+/* <Field> SpecialOperation.parenthesised = 1, bool */
+/* <Field> SpecialOperation.name = 2, str */
+/* <Field> SpecialOperation.arguments = 3, expr_list */
+
+/* <Field> Starred.location = 0, location */
+/* <Field> Starred.parenthesised = 1, bool */
+/* <Field> Starred.value = 2, expr */
+/* <Field> Starred.ctx = 3, expr_context */
+
+/* <Field> Str.location = 0, location */
+/* <Field> Str.parenthesised = 1, bool */
+/* <Field> Str.s = 2, str */
+/* <Field> Str.prefix = 3, str */
+/* <Field> Str.implicitly_concatenated_parts = 4, StringPart_list */
+
+/* <Field> StringPart.text = 0, str */
+/* <Field> StringPart.location = 1, location */
+/* <Parent> StringPart = StringPartList  */
+/* <Parent> StringPartList = BytesOrStr  */
+
+/* <Field> Subscript.location = 0, location */
+/* <Field> Subscript.parenthesised = 1, bool */
+/* <Field> Subscript.value = 2, expr */
+/* <Field> Subscript.index = 3, expr */
+/* <Field> Subscript.ctx = 4, expr_context */
+
+/* <Field> TemplateDottedNotation.location = 0, location */
+/* <Field> TemplateDottedNotation.parenthesised = 1, bool */
+/* <Field> TemplateDottedNotation.value = 2, expr */
+/* <Field> TemplateDottedNotation.attr = 3, str */
+/* <Field> TemplateDottedNotation.ctx = 4, expr_context */
+
+/* <Field> TemplateString.location = 0, location */
+/* <Field> TemplateString.parenthesised = 1, bool */
+/* <Field> TemplateString.prefix = 2, str */
+/* <Field> TemplateString.values = 3, expr_list */
+/* <Parent> TemplateString = TemplateStringList  */
+
+/* <Field> TemplateStringPart.location = 0, location */
+/* <Field> TemplateStringPart.parenthesised = 1, bool */
+/* <Field> TemplateStringPart.text = 2, str */
+/* <Parent> TemplateStringList = JoinedTemplateString  */
+
+/* <Field> TemplateWrite.location = 0, location */
+/* <Field> TemplateWrite.value = 1, expr */
+
+/* <Field> Try.location = 0, location */
+/* <Field> Try.body = 1, stmt_list */
+/* <Field> Try.orelse = 2, stmt_list */
+/* <Field> Try.handlers = 3, stmt_list */
+/* <Field> Try.finalbody = 4, stmt_list */
+
+/* <Field> Tuple.location = 0, location */
+/* <Field> Tuple.parenthesised = 1, bool */
+/* <Field> Tuple.elts = 2, expr_list */
+/* <Field> Tuple.ctx = 3, expr_context */
+/* <Parent> Tuple = ParameterList  */
+
+/* <Field> TypeAlias.location = 0, location */
+/* <Field> TypeAlias.name = 1, expr */
+/* <Field> TypeAlias.type_parameters = 2, type_parameter_list */
+/* <Field> TypeAlias.value = 3, expr */
+
+/* <Field> TypeVar.location = 0, location */
+/* <Field> TypeVar.name = 1, expr */
+/* <Field> TypeVar.bound = 2, expr */
+/* <Field> TypeVar.default = 3, expr */
+
+/* <Field> TypeVarTuple.location = 0, location */
+/* <Field> TypeVarTuple.name = 1, expr */
+/* <Field> TypeVarTuple.default = 2, expr */
+
+/* <Field> UnaryExpr.location = 0, location */
+/* <Field> UnaryExpr.parenthesised = 1, bool */
+/* <Field> UnaryExpr.op = 2, unaryop */
+/* <Field> UnaryExpr.operand = 3, expr */
+
+/* <Field> While.location = 0, location */
+/* <Field> While.test = 1, expr */
+/* <Field> While.body = 2, stmt_list */
+/* <Field> While.orelse = 3, stmt_list */
+
+/* <Field> With.location = 0, location */
+/* <Field> With.context_expr = 1, expr */
+/* <Field> With.optional_vars = 2, expr */
+/* <Field> With.body = 3, stmt_list */
+/* <Field> With.is_async = 4, bool */
+
+/* <Field> Yield.location = 0, location */
+/* <Field> Yield.parenthesised = 1, bool */
+/* <Field> Yield.value = 2, expr */
+
+/* <Field> YieldFrom.location = 0, location */
+/* <Field> YieldFrom.parenthesised = 1, bool */
+/* <Field> YieldFrom.value = 2, expr */
+
+/* <Field> Alias.value = 0, expr */
+/* <Field> Alias.asname = 1, expr */
+/* <Parent> Alias = AliasList  */
+/* <Parent> AliasList = Import  */
+
+/* <Field> Arguments.kw_defaults = 0, expr_list */
+/* <Field> Arguments.defaults = 1, expr_list */
+/* <Field> Arguments.annotations = 2, expr_list */
+/* <Field> Arguments.varargannotation = 3, expr */
+/* <Field> Arguments.kwargannotation = 4, expr */
+/* <Field> Arguments.kw_annotations = 5, expr_list */
+/* <Parent> Arguments = ArgumentsParent  */
+/* <Parent> boolean = BoolParent  */
+/* <Parent> Boolop = BoolExpr  */
+/* <Parent> string = Bytes  */
+/* <Parent> Cmpop = CmpopList  */
+/* <Parent> CmpopList = Compare  */
+
+/* <Field> Comprehension.location = 0, location */
+/* <Field> Comprehension.iter = 1, expr */
+/* <Field> Comprehension.target = 2, expr */
+/* <Field> Comprehension.ifs = 3, expr_list */
+/* <Parent> Comprehension = ComprehensionList  */
+/* <Parent> ComprehensionList = ListComp  */
+/* <Parent> DictItem = DictItemList  */
+/* <Parent> DictItemList = DictItemListParent  */
+
+/* <Field> Expr.location = 0, location */
+/* <Field> Expr.parenthesised = 1, bool */
+/* <Parent> Expr = ExprParent  */
+/* <Parent> ExprContext = ExprContextParent  */
+/* <Parent> ExprList = ExprListParent  */
+/* <Parent> int = ImportExpr  */
+
+/* <Field> Keyword.location = 0, location */
+/* <Field> Keyword.value = 1, expr */
+/* <Field> Keyword.arg = 2, str */
+/* <Parent> Location = LocationParent  */
+/* <Parent> string = Num  */
+/* <Parent> Operator = BinaryExpr  */
+/* <Parent> ParameterList = Function  */
+
+/* <Field> Pattern.location = 0, location */
+/* <Field> Pattern.parenthesised = 1, bool */
+/* <Parent> Pattern = PatternParent  */
+/* <Parent> PatternList = PatternListParent  */
+
+/* <Field> Stmt.location = 0, location */
+/* <Parent> Stmt = StmtList  */
+/* <Parent> StmtList = StmtListParent  */
+/* <Parent> string = StrParent  */
+/* <Parent> StringList = StrListParent  */
+
+/* <Field> TypeParameter.location = 0, location */
+/* <Parent> TypeParameter = TypeParameterList  */
+/* <Parent> TypeParameterList = TypeParameterListParent  */
+/* <Parent> Unaryop = UnaryExpr  */
+/* <Parent> Variable = VariableParent  */
+py_Classes(unique int id : @py_Class,
+    unique int parent : @py_ClassExpr ref);
+
+py_Functions(unique int id : @py_Function,
+    unique int parent : @py_Function_parent ref);
+
+py_Modules(unique int id : @py_Module);
+
+py_StringParts(unique int id : @py_StringPart,
+    int parent : @py_StringPart_list ref,
+    int idx : int ref);
+
+py_StringPart_lists(unique int id : @py_StringPart_list,
+    unique int parent : @py_Bytes_or_Str ref);
+
+py_TemplateString_lists(unique int id : @py_TemplateString_list,
+    unique int parent : @py_JoinedTemplateString ref);
+
+py_aliases(unique int id : @py_alias,
+    int parent : @py_alias_list ref,
+    int idx : int ref);
+
+py_alias_lists(unique int id : @py_alias_list,
+    unique int parent : @py_Import ref);
+
+py_arguments(unique int id : @py_arguments,
+    unique int parent : @py_arguments_parent ref);
+
+py_bools(int parent : @py_bool_parent ref,
+    int idx : int ref);
+
+py_boolops(unique int id : @py_boolop,
+    int kind: int ref,
+    unique int parent : @py_BoolExpr ref);
+
+py_bytes(varchar(1) id : string ref,
+    int parent : @py_Bytes ref,
+    int idx : int ref);
+
+py_cmpops(unique int id : @py_cmpop,
+    int kind: int ref,
+    int parent : @py_cmpop_list ref,
+    int idx : int ref);
+
+py_cmpop_lists(unique int id : @py_cmpop_list,
+    unique int parent : @py_Compare ref);
+
+py_comprehensions(unique int id : @py_comprehension,
+    int parent : @py_comprehension_list ref,
+    int idx : int ref);
+
+py_comprehension_lists(unique int id : @py_comprehension_list,
+    unique int parent : @py_ListComp ref);
+
+py_dict_items(unique int id : @py_dict_item,
+    int kind: int ref,
+    int parent : @py_dict_item_list ref,
+    int idx : int ref);
+
+py_dict_item_lists(unique int id : @py_dict_item_list,
+    unique int parent : @py_dict_item_list_parent ref);
+
+py_exprs(unique int id : @py_expr,
+    int kind: int ref,
+    int parent : @py_expr_parent ref,
+    int idx : int ref);
+
+py_expr_contexts(unique int id : @py_expr_context,
+    int kind: int ref,
+    unique int parent : @py_expr_context_parent ref);
+
+py_expr_lists(unique int id : @py_expr_list,
+    int parent : @py_expr_list_parent ref,
+    int idx : int ref);
+
+py_ints(int id : int ref,
+    unique int parent : @py_ImportExpr ref);
+
+py_locations(unique int id : @location ref,
+    unique int parent : @py_location_parent ref);
+
+py_numbers(varchar(1) id : string ref,
+    int parent : @py_Num ref,
+    int idx : int ref);
+
+py_operators(unique int id : @py_operator,
+    int kind: int ref,
+    unique int parent : @py_BinaryExpr ref);
+
+py_parameter_lists(unique int id : @py_parameter_list,
+    unique int parent : @py_Function ref);
+
+py_patterns(unique int id : @py_pattern,
+    int kind: int ref,
+    int parent : @py_pattern_parent ref,
+    int idx : int ref);
+
+py_pattern_lists(unique int id : @py_pattern_list,
+    int parent : @py_pattern_list_parent ref,
+    int idx : int ref);
+
+py_stmts(unique int id : @py_stmt,
+    int kind: int ref,
+    int parent : @py_stmt_list ref,
+    int idx : int ref);
+
+py_stmt_lists(unique int id : @py_stmt_list,
+    int parent : @py_stmt_list_parent ref,
+    int idx : int ref);
+
+py_strs(varchar(1) id : string ref,
+    int parent : @py_str_parent ref,
+    int idx : int ref);
+
+py_str_lists(unique int id : @py_str_list,
+    unique int parent : @py_str_list_parent ref);
+
+py_type_parameters(unique int id : @py_type_parameter,
+    int kind: int ref,
+    int parent : @py_type_parameter_list ref,
+    int idx : int ref);
+
+py_type_parameter_lists(unique int id : @py_type_parameter_list,
+    unique int parent : @py_type_parameter_list_parent ref);
+
+py_unaryops(unique int id : @py_unaryop,
+    int kind: int ref,
+    unique int parent : @py_UnaryExpr ref);
+
+py_variables(int id : @py_variable ref,
+    unique int parent : @py_variable_parent ref);
+
+case @py_boolop.kind of
+    0 = @py_And
+|   1 = @py_Or;
+
+case @py_cmpop.kind of
+    0 = @py_Eq
+|   1 = @py_Gt
+|   2 = @py_GtE
+|   3 = @py_In
+|   4 = @py_Is
+|   5 = @py_IsNot
+|   6 = @py_Lt
+|   7 = @py_LtE
+|   8 = @py_NotEq
+|   9 = @py_NotIn;
+
+case @py_dict_item.kind of
+    0 = @py_DictUnpacking
+|   1 = @py_KeyValuePair
+|   2 = @py_keyword;
+
+case @py_expr.kind of
+    0 = @py_Attribute
+|   1 = @py_BinaryExpr
+|   2 = @py_BoolExpr
+|   3 = @py_Bytes
+|   4 = @py_Call
+|   5 = @py_ClassExpr
+|   6 = @py_Compare
+|   7 = @py_Dict
+|   8 = @py_DictComp
+|   9 = @py_Ellipsis
+|   10 = @py_FunctionExpr
+|   11 = @py_GeneratorExp
+|   12 = @py_IfExp
+|   13 = @py_ImportExpr
+|   14 = @py_ImportMember
+|   15 = @py_Lambda
+|   16 = @py_List
+|   17 = @py_ListComp
+|   18 = @py_Guard
+|   19 = @py_Name
+|   20 = @py_Num
+|   21 = @py_Repr
+|   22 = @py_Set
+|   23 = @py_SetComp
+|   24 = @py_Slice
+|   25 = @py_Starred
+|   26 = @py_Str
+|   27 = @py_Subscript
+|   28 = @py_Tuple
+|   29 = @py_UnaryExpr
+|   30 = @py_Yield
+|   31 = @py_YieldFrom
+|   32 = @py_TemplateDottedNotation
+|   33 = @py_Filter
+|   34 = @py_PlaceHolder
+|   35 = @py_Await
+|   36 = @py_Fstring
+|   37 = @py_FormattedValue
+|   38 = @py_AssignExpr
+|   39 = @py_SpecialOperation
+|   40 = @py_TemplateString
+|   41 = @py_JoinedTemplateString
+|   42 = @py_TemplateStringPart;
+
+case @py_expr_context.kind of
+    0 = @py_AugLoad
+|   1 = @py_AugStore
+|   2 = @py_Del
+|   3 = @py_Load
+|   4 = @py_Param
+|   5 = @py_Store;
+
+case @py_operator.kind of
+    0 = @py_Add
+|   1 = @py_BitAnd
+|   2 = @py_BitOr
+|   3 = @py_BitXor
+|   4 = @py_Div
+|   5 = @py_FloorDiv
+|   6 = @py_LShift
+|   7 = @py_Mod
+|   8 = @py_Mult
+|   9 = @py_Pow
+|   10 = @py_RShift
+|   11 = @py_Sub
+|   12 = @py_MatMult;
+
+case @py_pattern.kind of
+    0 = @py_MatchAsPattern
+|   1 = @py_MatchOrPattern
+|   2 = @py_MatchLiteralPattern
+|   3 = @py_MatchCapturePattern
+|   4 = @py_MatchWildcardPattern
+|   5 = @py_MatchValuePattern
+|   6 = @py_MatchSequencePattern
+|   7 = @py_MatchStarPattern
+|   8 = @py_MatchMappingPattern
+|   9 = @py_MatchDoubleStarPattern
+|   10 = @py_MatchKeyValuePattern
+|   11 = @py_MatchClassPattern
+|   12 = @py_MatchKeywordPattern;
+
+case @py_stmt.kind of
+    0 = @py_Assert
+|   1 = @py_Assign
+|   2 = @py_AugAssign
+|   3 = @py_Break
+|   4 = @py_Continue
+|   5 = @py_Delete
+|   6 = @py_ExceptStmt
+|   7 = @py_ExceptGroupStmt
+|   8 = @py_Exec
+|   9 = @py_Expr_stmt
+|   10 = @py_For
+|   11 = @py_Global
+|   12 = @py_If
+|   13 = @py_Import
+|   14 = @py_ImportStar
+|   15 = @py_MatchStmt
+|   16 = @py_Case
+|   17 = @py_Nonlocal
+|   18 = @py_Pass
+|   19 = @py_Print
+|   20 = @py_Raise
+|   21 = @py_Return
+|   22 = @py_Try
+|   23 = @py_While
+|   24 = @py_With
+|   25 = @py_TemplateWrite
+|   26 = @py_AnnAssign
+|   27 = @py_TypeAlias;
+
+case @py_type_parameter.kind of
+    0 = @py_ParamSpec
+|   1 = @py_TypeVar
+|   2 = @py_TypeVarTuple;
+
+case @py_unaryop.kind of
+    0 = @py_Invert
+|   1 = @py_Not
+|   2 = @py_UAdd
+|   3 = @py_USub;
+
+@py_Bytes_or_Str = @py_Bytes | @py_Str;
+
+@py_Function_parent = @py_DictComp | @py_FunctionExpr | @py_GeneratorExp | @py_Lambda | @py_ListComp | @py_SetComp;
+
+@py_arguments_parent = @py_FunctionExpr | @py_Lambda;
+
+@py_ast_node = @py_Class | @py_Function | @py_Module | @py_StringPart | @py_comprehension | @py_dict_item | @py_expr | @py_pattern | @py_stmt | @py_type_parameter;
+
+@py_bool_parent = @py_For | @py_Function | @py_Print | @py_With | @py_expr | @py_pattern;
+
+@py_dict_item_list_parent = @py_Call | @py_ClassExpr | @py_Dict;
+
+@py_expr_context_parent = @py_Attribute | @py_List | @py_Name | @py_PlaceHolder | @py_Starred | @py_Subscript | @py_TemplateDottedNotation | @py_Tuple;
+
+@py_expr_list_parent = @py_Assign | @py_BoolExpr | @py_Call | @py_ClassExpr | @py_Compare | @py_Delete | @py_Fstring | @py_Function | @py_List | @py_Print | @py_Set | @py_SpecialOperation | @py_TemplateString | @py_Tuple | @py_arguments | @py_comprehension;
+
+@py_expr_or_stmt = @py_expr | @py_stmt;
+
+@py_expr_parent = @py_AnnAssign | @py_Assert | @py_Assign | @py_AssignExpr | @py_Attribute | @py_AugAssign | @py_Await | @py_BinaryExpr | @py_Call | @py_Case | @py_Compare | @py_DictComp | @py_DictUnpacking | @py_ExceptGroupStmt | @py_ExceptStmt | @py_Exec | @py_Expr_stmt | @py_Filter | @py_For | @py_FormattedValue | @py_Function | @py_FunctionExpr | @py_GeneratorExp | @py_Guard | @py_If | @py_IfExp | @py_ImportMember | @py_ImportStar | @py_KeyValuePair | @py_ListComp | @py_MatchAsPattern | @py_MatchCapturePattern | @py_MatchClassPattern | @py_MatchKeywordPattern | @py_MatchLiteralPattern | @py_MatchStmt | @py_MatchValuePattern | @py_ParamSpec | @py_Print | @py_Raise | @py_Repr | @py_Return | @py_SetComp | @py_Slice | @py_Starred | @py_Subscript | @py_TemplateDottedNotation | @py_TemplateString_list | @py_TemplateWrite | @py_TypeAlias | @py_TypeVar | @py_TypeVarTuple | @py_UnaryExpr | @py_While | @py_With | @py_Yield | @py_YieldFrom | @py_alias | @py_arguments | @py_comprehension | @py_expr_list | @py_keyword | @py_parameter_list;
+
+@py_location_parent = @py_DictUnpacking | @py_KeyValuePair | @py_StringPart | @py_comprehension | @py_expr | @py_keyword | @py_pattern | @py_stmt | @py_type_parameter;
+
+@py_parameter = @py_Name | @py_Tuple;
+
+@py_pattern_list_parent = @py_MatchClassPattern | @py_MatchMappingPattern | @py_MatchOrPattern | @py_MatchSequencePattern;
+
+@py_pattern_parent = @py_Case | @py_MatchAsPattern | @py_MatchDoubleStarPattern | @py_MatchKeyValuePattern | @py_MatchKeywordPattern | @py_MatchStarPattern | @py_pattern_list;
+
+@py_scope = @py_Class | @py_Function | @py_Module;
+
+@py_stmt_list_parent = @py_Case | @py_Class | @py_ExceptGroupStmt | @py_ExceptStmt | @py_For | @py_Function | @py_If | @py_MatchStmt | @py_Module | @py_Try | @py_While | @py_With;
+
+@py_str_list_parent = @py_Global | @py_Nonlocal;
+
+@py_str_parent = @py_Attribute | @py_Class | @py_ClassExpr | @py_FormattedValue | @py_Function | @py_FunctionExpr | @py_ImportExpr | @py_ImportMember | @py_Module | @py_SpecialOperation | @py_Str | @py_StringPart | @py_TemplateDottedNotation | @py_TemplateString | @py_TemplateStringPart | @py_keyword | @py_str_list;
+
+@py_type_parameter_list_parent = @py_ClassExpr | @py_Function | @py_TypeAlias;
+
+@py_variable_parent = @py_Name | @py_PlaceHolder;
+
+
+/*
+ * End of auto-generated part
+ */
+
+
+
+/* Map relative names to absolute names for imports */
+py_absolute_names(int module : @py_Module ref,
+                  varchar(1) relname : string ref,
+                  varchar(1) absname : string ref);
+
+py_exports(int id : @py_Module ref,
+           varchar(1) name : string ref);
+
+/* Successor information */
+py_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_true_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_exception_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_false_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_flow_bb_node(unique int flownode : @py_flow_node,
+             int realnode : @py_ast_node ref,
+             int basicblock : @py_flow_node ref,
+             int index : int ref);
+
+py_scope_flow(int flow : @py_flow_node ref,
+              int scope : @py_scope ref,
+              int kind : int ref);
+
+py_idoms(unique int node : @py_flow_node ref,
+         int immediate_dominator : @py_flow_node ref);
+
+py_ssa_phi(int phi : @py_ssa_var ref,
+           int arg: @py_ssa_var ref);
+
+py_ssa_var(unique int id : @py_ssa_var,
+            int var : @py_variable ref);
+
+py_ssa_use(int node: @py_flow_node ref,
+           int var : @py_ssa_var ref);
+
+py_ssa_defn(unique int id : @py_ssa_var ref,
+                  int node: @py_flow_node ref);
+
+@py_base_var = @py_variable | @py_ssa_var;
+
+py_scopes(unique int node : @py_expr_or_stmt ref,
+         int scope : @py_scope ref);
+
+py_scope_location(unique int id : @location ref,
+                   unique int scope : @py_scope ref);
+
+py_flags_versioned(varchar(1) name : string ref,
+                   varchar(1) value : string ref,
+                   varchar(1) version : string ref);
+
+py_syntax_error_versioned(unique int id : @location ref,
+                varchar(1) message : string ref,
+                varchar(1) version : string ref);
+
+py_comments(unique int id : @py_comment,
+           varchar(1) text : string ref,
+           unique int location : @location ref);
+
+/* Type information support */
+
+py_cobjects(unique int obj : @py_cobject);
+
+py_cobjecttypes(unique int obj : @py_cobject ref,
+                int typeof : @py_cobject ref);
+
+py_cobjectnames(unique int obj : @py_cobject ref,
+                varchar(1) name : string ref);
+
+/* Kind should be 0 for introspection, > 0 from source, as follows:
+   1 from C extension source
+ */
+py_cobject_sources(int obj : @py_cobject ref,
+                  int kind : int ref);
+
+py_cmembers_versioned(int object : @py_cobject ref,
+                      varchar(1) name : string ref,
+                      int member : @py_cobject ref,
+                      varchar(1) version : string ref);
+
+py_citems(int object : @py_cobject ref,
+            int index : int ref,
+            int member : @py_cobject ref);
+
+ext_argtype(int funcid : @py_object ref,
+            int arg : int ref,
+            int typeid : @py_object ref);
+
+ext_rettype(int funcid : @py_object ref,
+            int typeid : @py_object ref);
+
+ext_proptype(int propid : @py_object ref,
+             int typeid : @py_object ref);
+
+ext_argreturn(int funcid : @py_object ref,
+              int arg : int ref);
+
+py_special_objects(unique int obj : @py_cobject ref,
+                   unique varchar(1) name : string ref);
+
+py_decorated_object(int object : @py_object ref,
+                    int level: int ref);
+
+@py_object = @py_cobject | @py_flow_node;
+
+@py_source_element = @py_ast_node | @container;
+
+/** The union of all Python database entities */
+@top =
+  @py_source_element | @py_object | @py_base_var | @location | @py_line | @py_comment |
+      @py_expr_parent | @py_expr_context |
+      @py_operator | @py_boolop | @py_cmpop | @py_unaryop |
+      @py_cmpop_list | @py_alias_list | @py_StringPart_list | @py_comprehension_list | @py_dict_item_list | @py_pattern_list | @py_stmt_list | @py_str_list | @py_type_parameter_list |
+      @externalDefect | @externalMetric | @externalDataElement | @duplication_or_similarity | @svnentry |
+      @xmllocatable | @yaml_locatable;
diff --git a/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/upgrade.properties b/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/python/downgrades/279cbb08d387ecd57ac177e87c94cfd5ca62f792/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/python/extractor/semmle/dbscheme.template b/python/extractor/semmle/dbscheme.template
index 6b320aafab6d..8c6b16d444d4 100644
--- a/python/extractor/semmle/dbscheme.template
+++ b/python/extractor/semmle/dbscheme.template
@@ -40,20 +40,26 @@ externalData(
   string value : string ref
 );
 
-/*- Overlay support -*/
+/*- Database metadata -*/
 
 /**
- * The CLI will automatically emit the tuple `databaseMetadata("isOverlay", "true")`,
- * along with an `overlayChangedFiles` tuple for each new/modified/deleted file,
- * when building an overlay database, and these can be used by the discard predicates.
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
  */
 databaseMetadata(
-  string metadataKey : string ref,
-  string value : string ref
+  string metadataKey: string ref,
+  string value: string ref
 );
 
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
 overlayChangedFiles(
-  string path : string ref
+  string path: string ref
 );
 
 /*- DEPRECATED: Snapshot date -*/
diff --git a/python/extractor/semmle/dbscheme_gen.py b/python/extractor/semmle/dbscheme_gen.py
index 7c3a79fc3719..cab51b9741e7 100644
--- a/python/extractor/semmle/dbscheme_gen.py
+++ b/python/extractor/semmle/dbscheme_gen.py
@@ -62,6 +62,7 @@ def write(nodes, out):
 
 HEADER = '''/*
  *      This dbscheme is auto-generated by '%s'.
+ *      Run "make dbscheme" in python/extractor/ to regenerate.
  *      WARNING: Any modifications to this file will be lost.
  *      Relations can be changed by modifying master.py or
  *      by adding rules to dbscheme.template
diff --git a/python/ql/lib/semmlecode.python.dbscheme b/python/ql/lib/semmlecode.python.dbscheme
index 8d257a4a9bc7..279cbb08d387 100644
--- a/python/ql/lib/semmlecode.python.dbscheme
+++ b/python/ql/lib/semmlecode.python.dbscheme
@@ -1,5 +1,6 @@
 /*
  *      This dbscheme is auto-generated by 'semmle/dbscheme_gen.py'.
+ *      Run "make dbscheme" in python/extractor/ to regenerate.
  *      WARNING: Any modifications to this file will be lost.
  *      Relations can be changed by modifying master.py or
  *      by adding rules to dbscheme.template
@@ -47,20 +48,26 @@ externalData(
   string value : string ref
 );
 
-/*- Overlay support -*/
+/*- Database metadata -*/
 
 /**
- * The CLI will automatically emit the tuple `databaseMetadata("isOverlay", "true")`,
- * along with an `overlayChangedFiles` tuple for each new/modified/deleted file,
- * when building an overlay database, and these can be used by the discard predicates.
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
  */
 databaseMetadata(
-  string metadataKey : string ref,
-  string value : string ref
+  string metadataKey: string ref,
+  string value: string ref
 );
 
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
 overlayChangedFiles(
-  string path : string ref
+  string path: string ref
 );
 
 /*- DEPRECATED: Snapshot date -*/
diff --git a/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/old.dbscheme b/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/old.dbscheme
new file mode 100644
index 000000000000..8d257a4a9bc7
--- /dev/null
+++ b/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/old.dbscheme
@@ -0,0 +1,1282 @@
+/*
+ *      This dbscheme is auto-generated by 'semmle/dbscheme_gen.py'.
+ *      WARNING: Any modifications to this file will be lost.
+ *      Relations can be changed by modifying master.py or
+ *      by adding rules to dbscheme.template
+ */
+
+/* This is a dummy line to alter the dbscheme, so we can make a database upgrade
+ * without actually changing any of the dbscheme predicates. It contains a date
+ * to allow for such updates in the future as well.
+ *
+ * 2020-07-02
+ *
+ * DO NOT remove this comment carelessly, since it can revert the dbscheme back to a
+ * previously seen state (matching a previously seen SHA), which would make the upgrade
+ * mechanism not work properly.
+ */
+
+/*- DEPRECATED: External defects and metrics -*/
+
+externalDefects(
+  unique int id : @externalDefect,
+  varchar(900) queryPath : string ref,
+  int location : @location ref,
+  varchar(900) message : string ref,
+  float severity : float ref
+);
+
+externalMetrics(
+  unique int id : @externalMetric,
+  varchar(900) queryPath : string ref,
+  int location : @location ref,
+  float value : float ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit the tuple `databaseMetadata("isOverlay", "true")`,
+ * along with an `overlayChangedFiles` tuple for each new/modified/deleted file,
+ * when building an overlay database, and these can be used by the discard predicates.
+ */
+databaseMetadata(
+  string metadataKey : string ref,
+  string value : string ref
+);
+
+overlayChangedFiles(
+  string path : string ref
+);
+
+/*- DEPRECATED: Snapshot date -*/
+
+snapshotDate(unique date snapshotDate : date ref);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- DEPRECATED: Duplicate code -*/
+
+duplicateCode(
+  unique int id : @duplication,
+  string relativePath : string ref,
+  int equivClass : int ref
+);
+
+similarCode(
+  unique int id : @similarity,
+  string relativePath : string ref,
+  int equivClass : int ref
+);
+
+@duplication_or_similarity = @duplication | @similarity
+
+tokens(
+  int id : @duplication_or_similarity ref,
+  int offset : int ref,
+  int beginLine : int ref,
+  int beginColumn : int ref,
+  int endLine : int ref,
+  int endColumn : int ref
+);
+
+/*- DEPRECATED: Version control data -*/
+
+svnentries(
+  unique int id : @svnentry,
+  string revision : string ref,
+  string author : string ref,
+  date revisionDate : date ref,
+  int changeSize : int ref
+)
+
+svnaffectedfiles(
+  int id : @svnentry ref,
+  int file : @file ref,
+  string action : string ref
+)
+
+svnentrymsg(
+  unique int id : @svnentry ref,
+  string message : string ref
+)
+
+svnchurn(
+  int commit : @svnentry ref,
+  int file : @file ref,
+  int addedLines : int ref,
+  int deletedLines : int ref
+)
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Python dbscheme -*/
+
+/*
+ * Line metrics
+ */
+py_codelines(int id : @py_scope ref,
+             int count : int ref);
+
+py_commentlines(int id : @py_scope ref,
+                int count : int ref);
+
+py_docstringlines(int id : @py_scope ref,
+                int count : int ref);
+
+py_alllines(int id : @py_scope ref,
+                int count : int ref);
+
+/****************************
+        Python dbscheme
+****************************/
+
+@sourceline = @file | @py_Module | @xmllocatable;
+
+@location = @location_ast | @location_default ;
+
+locations_ast(unique int id: @location_ast,
+          int module: @py_Module ref,
+          int beginLine: int ref,
+          int beginColumn: int ref,
+          int endLine: int ref,
+          int endColumn: int ref);
+
+file_contents(unique int file: @file ref, string contents: string ref);
+
+py_module_path(int module: @py_Module ref, int file: @container ref);
+
+variable(unique int id : @py_variable,
+         int scope : @py_scope ref,
+         varchar(1) name : string ref);
+
+py_line_lengths(unique int id : @py_line,
+                int file: @py_Module ref,
+                int line : int ref,
+                int length : int ref);
+
+py_extracted_version(int module : @py_Module ref,
+                     varchar(1) version : string ref);
+
+/* AUTO GENERATED PART STARTS HERE */
+
+
+/* <Field> AnnAssign.location = 0, location */
+/* <Field> AnnAssign.value = 1, expr */
+/* <Field> AnnAssign.annotation = 2, expr */
+/* <Field> AnnAssign.target = 3, expr */
+
+/* <Field> Assert.location = 0, location */
+/* <Field> Assert.test = 1, expr */
+/* <Field> Assert.msg = 2, expr */
+
+/* <Field> Assign.location = 0, location */
+/* <Field> Assign.value = 1, expr */
+/* <Field> Assign.targets = 2, expr_list */
+
+/* <Field> AssignExpr.location = 0, location */
+/* <Field> AssignExpr.parenthesised = 1, bool */
+/* <Field> AssignExpr.value = 2, expr */
+/* <Field> AssignExpr.target = 3, expr */
+
+/* <Field> Attribute.location = 0, location */
+/* <Field> Attribute.parenthesised = 1, bool */
+/* <Field> Attribute.value = 2, expr */
+/* <Field> Attribute.attr = 3, str */
+/* <Field> Attribute.ctx = 4, expr_context */
+
+/* <Field> AugAssign.location = 0, location */
+/* <Field> AugAssign.operation = 1, BinOp */
+
+/* <Field> Await.location = 0, location */
+/* <Field> Await.parenthesised = 1, bool */
+/* <Field> Await.value = 2, expr */
+
+/* <Field> BinaryExpr.location = 0, location */
+/* <Field> BinaryExpr.parenthesised = 1, bool */
+/* <Field> BinaryExpr.left = 2, expr */
+/* <Field> BinaryExpr.op = 3, operator */
+/* <Field> BinaryExpr.right = 4, expr */
+/* <Parent> BinaryExpr = AugAssign  */
+
+/* <Field> BoolExpr.location = 0, location */
+/* <Field> BoolExpr.parenthesised = 1, bool */
+/* <Field> BoolExpr.op = 2, boolop */
+/* <Field> BoolExpr.values = 3, expr_list */
+
+/* <Field> Break.location = 0, location */
+
+/* <Field> Bytes.location = 0, location */
+/* <Field> Bytes.parenthesised = 1, bool */
+/* <Field> Bytes.s = 2, bytes */
+/* <Field> Bytes.prefix = 3, bytes */
+/* <Field> Bytes.implicitly_concatenated_parts = 4, StringPart_list */
+
+/* <Field> Call.location = 0, location */
+/* <Field> Call.parenthesised = 1, bool */
+/* <Field> Call.func = 2, expr */
+/* <Field> Call.positional_args = 3, expr_list */
+/* <Field> Call.named_args = 4, dict_item_list */
+
+/* <Field> Case.location = 0, location */
+/* <Field> Case.pattern = 1, pattern */
+/* <Field> Case.guard = 2, expr */
+/* <Field> Case.body = 3, stmt_list */
+
+/* <Field> Class.name = 0, str */
+/* <Field> Class.body = 1, stmt_list */
+/* <Parent> Class = ClassExpr  */
+
+/* <Field> ClassExpr.location = 0, location */
+/* <Field> ClassExpr.parenthesised = 1, bool */
+/* <Field> ClassExpr.name = 2, str */
+/* <Field> ClassExpr.bases = 3, expr_list */
+/* <Field> ClassExpr.keywords = 4, dict_item_list */
+/* <Field> ClassExpr.inner_scope = 5, Class */
+/* <Field> ClassExpr.type_parameters = 6, type_parameter_list */
+
+/* <Field> Compare.location = 0, location */
+/* <Field> Compare.parenthesised = 1, bool */
+/* <Field> Compare.left = 2, expr */
+/* <Field> Compare.ops = 3, cmpop_list */
+/* <Field> Compare.comparators = 4, expr_list */
+
+/* <Field> Continue.location = 0, location */
+
+/* <Field> Delete.location = 0, location */
+/* <Field> Delete.targets = 1, expr_list */
+
+/* <Field> Dict.location = 0, location */
+/* <Field> Dict.parenthesised = 1, bool */
+/* <Field> Dict.items = 2, dict_item_list */
+
+/* <Field> DictComp.location = 0, location */
+/* <Field> DictComp.parenthesised = 1, bool */
+/* <Field> DictComp.function = 2, Function */
+/* <Field> DictComp.iterable = 3, expr */
+
+/* <Field> DictUnpacking.location = 0, location */
+/* <Field> DictUnpacking.value = 1, expr */
+
+/* <Field> Ellipsis.location = 0, location */
+/* <Field> Ellipsis.parenthesised = 1, bool */
+
+/* <Field> ExceptGroupStmt.location = 0, location */
+/* <Field> ExceptGroupStmt.type = 1, expr */
+/* <Field> ExceptGroupStmt.name = 2, expr */
+/* <Field> ExceptGroupStmt.body = 3, stmt_list */
+
+/* <Field> ExceptStmt.location = 0, location */
+/* <Field> ExceptStmt.type = 1, expr */
+/* <Field> ExceptStmt.name = 2, expr */
+/* <Field> ExceptStmt.body = 3, stmt_list */
+
+/* <Field> Exec.location = 0, location */
+/* <Field> Exec.body = 1, expr */
+/* <Field> Exec.globals = 2, expr */
+/* <Field> Exec.locals = 3, expr */
+
+/* <Field> ExprStmt.location = 0, location */
+/* <Field> ExprStmt.value = 1, expr */
+
+/* <Field> Filter.location = 0, location */
+/* <Field> Filter.parenthesised = 1, bool */
+/* <Field> Filter.value = 2, expr */
+/* <Field> Filter.filter = 3, expr */
+
+/* <Field> For.location = 0, location */
+/* <Field> For.target = 1, expr */
+/* <Field> For.iter = 2, expr */
+/* <Field> For.body = 3, stmt_list */
+/* <Field> For.orelse = 4, stmt_list */
+/* <Field> For.is_async = 5, bool */
+
+/* <Field> FormattedValue.location = 0, location */
+/* <Field> FormattedValue.parenthesised = 1, bool */
+/* <Field> FormattedValue.value = 2, expr */
+/* <Field> FormattedValue.conversion = 3, str */
+/* <Field> FormattedValue.format_spec = 4, JoinedStr */
+
+/* <Field> Function.name = 0, str */
+/* <Field> Function.args = 1, parameter_list */
+/* <Field> Function.vararg = 2, expr */
+/* <Field> Function.kwonlyargs = 3, expr_list */
+/* <Field> Function.kwarg = 4, expr */
+/* <Field> Function.body = 5, stmt_list */
+/* <Field> Function.is_async = 6, bool */
+/* <Field> Function.type_parameters = 7, type_parameter_list */
+/* <Parent> Function = FunctionParent  */
+
+/* <Field> FunctionExpr.location = 0, location */
+/* <Field> FunctionExpr.parenthesised = 1, bool */
+/* <Field> FunctionExpr.name = 2, str */
+/* <Field> FunctionExpr.args = 3, arguments */
+/* <Field> FunctionExpr.returns = 4, expr */
+/* <Field> FunctionExpr.inner_scope = 5, Function */
+
+/* <Field> GeneratorExp.location = 0, location */
+/* <Field> GeneratorExp.parenthesised = 1, bool */
+/* <Field> GeneratorExp.function = 2, Function */
+/* <Field> GeneratorExp.iterable = 3, expr */
+
+/* <Field> Global.location = 0, location */
+/* <Field> Global.names = 1, str_list */
+
+/* <Field> Guard.location = 0, location */
+/* <Field> Guard.parenthesised = 1, bool */
+/* <Field> Guard.test = 2, expr */
+
+/* <Field> If.location = 0, location */
+/* <Field> If.test = 1, expr */
+/* <Field> If.body = 2, stmt_list */
+/* <Field> If.orelse = 3, stmt_list */
+
+/* <Field> IfExp.location = 0, location */
+/* <Field> IfExp.parenthesised = 1, bool */
+/* <Field> IfExp.test = 2, expr */
+/* <Field> IfExp.body = 3, expr */
+/* <Field> IfExp.orelse = 4, expr */
+
+/* <Field> Import.location = 0, location */
+/* <Field> Import.names = 1, alias_list */
+
+/* <Field> ImportExpr.location = 0, location */
+/* <Field> ImportExpr.parenthesised = 1, bool */
+/* <Field> ImportExpr.level = 2, int */
+/* <Field> ImportExpr.name = 3, str */
+/* <Field> ImportExpr.top = 4, bool */
+
+/* <Field> ImportStar.location = 0, location */
+/* <Field> ImportStar.module = 1, expr */
+
+/* <Field> ImportMember.location = 0, location */
+/* <Field> ImportMember.parenthesised = 1, bool */
+/* <Field> ImportMember.module = 2, expr */
+/* <Field> ImportMember.name = 3, str */
+
+/* <Field> Fstring.location = 0, location */
+/* <Field> Fstring.parenthesised = 1, bool */
+/* <Field> Fstring.values = 2, expr_list */
+/* <Parent> Fstring = FormattedValue  */
+
+/* <Field> JoinedTemplateString.location = 0, location */
+/* <Field> JoinedTemplateString.parenthesised = 1, bool */
+/* <Field> JoinedTemplateString.strings = 2, TemplateString_list */
+
+/* <Field> KeyValuePair.location = 0, location */
+/* <Field> KeyValuePair.value = 1, expr */
+/* <Field> KeyValuePair.key = 2, expr */
+
+/* <Field> Lambda.location = 0, location */
+/* <Field> Lambda.parenthesised = 1, bool */
+/* <Field> Lambda.args = 2, arguments */
+/* <Field> Lambda.inner_scope = 3, Function */
+
+/* <Field> List.location = 0, location */
+/* <Field> List.parenthesised = 1, bool */
+/* <Field> List.elts = 2, expr_list */
+/* <Field> List.ctx = 3, expr_context */
+
+/* <Field> ListComp.location = 0, location */
+/* <Field> ListComp.parenthesised = 1, bool */
+/* <Field> ListComp.function = 2, Function */
+/* <Field> ListComp.iterable = 3, expr */
+/* <Field> ListComp.generators = 4, comprehension_list */
+/* <Field> ListComp.elt = 5, expr */
+
+/* <Field> MatchStmt.location = 0, location */
+/* <Field> MatchStmt.subject = 1, expr */
+/* <Field> MatchStmt.cases = 2, stmt_list */
+
+/* <Field> MatchAsPattern.location = 0, location */
+/* <Field> MatchAsPattern.parenthesised = 1, bool */
+/* <Field> MatchAsPattern.pattern = 2, pattern */
+/* <Field> MatchAsPattern.alias = 3, expr */
+
+/* <Field> MatchCapturePattern.location = 0, location */
+/* <Field> MatchCapturePattern.parenthesised = 1, bool */
+/* <Field> MatchCapturePattern.variable = 2, expr */
+
+/* <Field> MatchClassPattern.location = 0, location */
+/* <Field> MatchClassPattern.parenthesised = 1, bool */
+/* <Field> MatchClassPattern.class = 2, expr */
+/* <Field> MatchClassPattern.class_name = 3, expr */
+/* <Field> MatchClassPattern.positional = 4, pattern_list */
+/* <Field> MatchClassPattern.keyword = 5, pattern_list */
+
+/* <Field> MatchDoubleStarPattern.location = 0, location */
+/* <Field> MatchDoubleStarPattern.parenthesised = 1, bool */
+/* <Field> MatchDoubleStarPattern.target = 2, pattern */
+
+/* <Field> MatchKeyValuePattern.location = 0, location */
+/* <Field> MatchKeyValuePattern.parenthesised = 1, bool */
+/* <Field> MatchKeyValuePattern.key = 2, pattern */
+/* <Field> MatchKeyValuePattern.value = 3, pattern */
+
+/* <Field> MatchKeywordPattern.location = 0, location */
+/* <Field> MatchKeywordPattern.parenthesised = 1, bool */
+/* <Field> MatchKeywordPattern.attribute = 2, expr */
+/* <Field> MatchKeywordPattern.value = 3, pattern */
+
+/* <Field> MatchLiteralPattern.location = 0, location */
+/* <Field> MatchLiteralPattern.parenthesised = 1, bool */
+/* <Field> MatchLiteralPattern.literal = 2, expr */
+
+/* <Field> MatchMappingPattern.location = 0, location */
+/* <Field> MatchMappingPattern.parenthesised = 1, bool */
+/* <Field> MatchMappingPattern.mappings = 2, pattern_list */
+
+/* <Field> MatchOrPattern.location = 0, location */
+/* <Field> MatchOrPattern.parenthesised = 1, bool */
+/* <Field> MatchOrPattern.patterns = 2, pattern_list */
+
+/* <Field> MatchSequencePattern.location = 0, location */
+/* <Field> MatchSequencePattern.parenthesised = 1, bool */
+/* <Field> MatchSequencePattern.patterns = 2, pattern_list */
+
+/* <Field> MatchStarPattern.location = 0, location */
+/* <Field> MatchStarPattern.parenthesised = 1, bool */
+/* <Field> MatchStarPattern.target = 2, pattern */
+
+/* <Field> MatchValuePattern.location = 0, location */
+/* <Field> MatchValuePattern.parenthesised = 1, bool */
+/* <Field> MatchValuePattern.value = 2, expr */
+
+/* <Field> MatchWildcardPattern.location = 0, location */
+/* <Field> MatchWildcardPattern.parenthesised = 1, bool */
+
+/* <Field> Module.name = 0, str */
+/* <Field> Module.hash = 1, str */
+/* <Field> Module.body = 2, stmt_list */
+/* <Field> Module.kind = 3, str */
+
+/* <Field> Name.location = 0, location */
+/* <Field> Name.parenthesised = 1, bool */
+/* <Field> Name.variable = 2, variable */
+/* <Field> Name.ctx = 3, expr_context */
+/* <Parent> Name = ParameterList  */
+
+/* <Field> Nonlocal.location = 0, location */
+/* <Field> Nonlocal.names = 1, str_list */
+
+/* <Field> Num.location = 0, location */
+/* <Field> Num.parenthesised = 1, bool */
+/* <Field> Num.n = 2, number */
+/* <Field> Num.text = 3, number */
+
+/* <Field> ParamSpec.location = 0, location */
+/* <Field> ParamSpec.name = 1, expr */
+/* <Field> ParamSpec.default = 2, expr */
+
+/* <Field> Pass.location = 0, location */
+
+/* <Field> PlaceHolder.location = 0, location */
+/* <Field> PlaceHolder.parenthesised = 1, bool */
+/* <Field> PlaceHolder.variable = 2, variable */
+/* <Field> PlaceHolder.ctx = 3, expr_context */
+
+/* <Field> Print.location = 0, location */
+/* <Field> Print.dest = 1, expr */
+/* <Field> Print.values = 2, expr_list */
+/* <Field> Print.nl = 3, bool */
+
+/* <Field> Raise.location = 0, location */
+/* <Field> Raise.exc = 1, expr */
+/* <Field> Raise.cause = 2, expr */
+/* <Field> Raise.type = 3, expr */
+/* <Field> Raise.inst = 4, expr */
+/* <Field> Raise.tback = 5, expr */
+
+/* <Field> Repr.location = 0, location */
+/* <Field> Repr.parenthesised = 1, bool */
+/* <Field> Repr.value = 2, expr */
+
+/* <Field> Return.location = 0, location */
+/* <Field> Return.value = 1, expr */
+
+/* <Field> Set.location = 0, location */
+/* <Field> Set.parenthesised = 1, bool */
+/* <Field> Set.elts = 2, expr_list */
+
+/* <Field> SetComp.location = 0, location */
+/* <Field> SetComp.parenthesised = 1, bool */
+/* <Field> SetComp.function = 2, Function */
+/* <Field> SetComp.iterable = 3, expr */
+
+/* <Field> Slice.location = 0, location */
+/* <Field> Slice.parenthesised = 1, bool */
+/* <Field> Slice.start = 2, expr */
+/* <Field> Slice.stop = 3, expr */
+/* <Field> Slice.step = 4, expr */
+
+/* <Field> SpecialOperation.location = 0, location */
+/* <Field> SpecialOperation.parenthesised = 1, bool */
+/* <Field> SpecialOperation.name = 2, str */
+/* <Field> SpecialOperation.arguments = 3, expr_list */
+
+/* <Field> Starred.location = 0, location */
+/* <Field> Starred.parenthesised = 1, bool */
+/* <Field> Starred.value = 2, expr */
+/* <Field> Starred.ctx = 3, expr_context */
+
+/* <Field> Str.location = 0, location */
+/* <Field> Str.parenthesised = 1, bool */
+/* <Field> Str.s = 2, str */
+/* <Field> Str.prefix = 3, str */
+/* <Field> Str.implicitly_concatenated_parts = 4, StringPart_list */
+
+/* <Field> StringPart.text = 0, str */
+/* <Field> StringPart.location = 1, location */
+/* <Parent> StringPart = StringPartList  */
+/* <Parent> StringPartList = BytesOrStr  */
+
+/* <Field> Subscript.location = 0, location */
+/* <Field> Subscript.parenthesised = 1, bool */
+/* <Field> Subscript.value = 2, expr */
+/* <Field> Subscript.index = 3, expr */
+/* <Field> Subscript.ctx = 4, expr_context */
+
+/* <Field> TemplateDottedNotation.location = 0, location */
+/* <Field> TemplateDottedNotation.parenthesised = 1, bool */
+/* <Field> TemplateDottedNotation.value = 2, expr */
+/* <Field> TemplateDottedNotation.attr = 3, str */
+/* <Field> TemplateDottedNotation.ctx = 4, expr_context */
+
+/* <Field> TemplateString.location = 0, location */
+/* <Field> TemplateString.parenthesised = 1, bool */
+/* <Field> TemplateString.prefix = 2, str */
+/* <Field> TemplateString.values = 3, expr_list */
+/* <Parent> TemplateString = TemplateStringList  */
+
+/* <Field> TemplateStringPart.location = 0, location */
+/* <Field> TemplateStringPart.parenthesised = 1, bool */
+/* <Field> TemplateStringPart.text = 2, str */
+/* <Parent> TemplateStringList = JoinedTemplateString  */
+
+/* <Field> TemplateWrite.location = 0, location */
+/* <Field> TemplateWrite.value = 1, expr */
+
+/* <Field> Try.location = 0, location */
+/* <Field> Try.body = 1, stmt_list */
+/* <Field> Try.orelse = 2, stmt_list */
+/* <Field> Try.handlers = 3, stmt_list */
+/* <Field> Try.finalbody = 4, stmt_list */
+
+/* <Field> Tuple.location = 0, location */
+/* <Field> Tuple.parenthesised = 1, bool */
+/* <Field> Tuple.elts = 2, expr_list */
+/* <Field> Tuple.ctx = 3, expr_context */
+/* <Parent> Tuple = ParameterList  */
+
+/* <Field> TypeAlias.location = 0, location */
+/* <Field> TypeAlias.name = 1, expr */
+/* <Field> TypeAlias.type_parameters = 2, type_parameter_list */
+/* <Field> TypeAlias.value = 3, expr */
+
+/* <Field> TypeVar.location = 0, location */
+/* <Field> TypeVar.name = 1, expr */
+/* <Field> TypeVar.bound = 2, expr */
+/* <Field> TypeVar.default = 3, expr */
+
+/* <Field> TypeVarTuple.location = 0, location */
+/* <Field> TypeVarTuple.name = 1, expr */
+/* <Field> TypeVarTuple.default = 2, expr */
+
+/* <Field> UnaryExpr.location = 0, location */
+/* <Field> UnaryExpr.parenthesised = 1, bool */
+/* <Field> UnaryExpr.op = 2, unaryop */
+/* <Field> UnaryExpr.operand = 3, expr */
+
+/* <Field> While.location = 0, location */
+/* <Field> While.test = 1, expr */
+/* <Field> While.body = 2, stmt_list */
+/* <Field> While.orelse = 3, stmt_list */
+
+/* <Field> With.location = 0, location */
+/* <Field> With.context_expr = 1, expr */
+/* <Field> With.optional_vars = 2, expr */
+/* <Field> With.body = 3, stmt_list */
+/* <Field> With.is_async = 4, bool */
+
+/* <Field> Yield.location = 0, location */
+/* <Field> Yield.parenthesised = 1, bool */
+/* <Field> Yield.value = 2, expr */
+
+/* <Field> YieldFrom.location = 0, location */
+/* <Field> YieldFrom.parenthesised = 1, bool */
+/* <Field> YieldFrom.value = 2, expr */
+
+/* <Field> Alias.value = 0, expr */
+/* <Field> Alias.asname = 1, expr */
+/* <Parent> Alias = AliasList  */
+/* <Parent> AliasList = Import  */
+
+/* <Field> Arguments.kw_defaults = 0, expr_list */
+/* <Field> Arguments.defaults = 1, expr_list */
+/* <Field> Arguments.annotations = 2, expr_list */
+/* <Field> Arguments.varargannotation = 3, expr */
+/* <Field> Arguments.kwargannotation = 4, expr */
+/* <Field> Arguments.kw_annotations = 5, expr_list */
+/* <Parent> Arguments = ArgumentsParent  */
+/* <Parent> boolean = BoolParent  */
+/* <Parent> Boolop = BoolExpr  */
+/* <Parent> string = Bytes  */
+/* <Parent> Cmpop = CmpopList  */
+/* <Parent> CmpopList = Compare  */
+
+/* <Field> Comprehension.location = 0, location */
+/* <Field> Comprehension.iter = 1, expr */
+/* <Field> Comprehension.target = 2, expr */
+/* <Field> Comprehension.ifs = 3, expr_list */
+/* <Parent> Comprehension = ComprehensionList  */
+/* <Parent> ComprehensionList = ListComp  */
+/* <Parent> DictItem = DictItemList  */
+/* <Parent> DictItemList = DictItemListParent  */
+
+/* <Field> Expr.location = 0, location */
+/* <Field> Expr.parenthesised = 1, bool */
+/* <Parent> Expr = ExprParent  */
+/* <Parent> ExprContext = ExprContextParent  */
+/* <Parent> ExprList = ExprListParent  */
+/* <Parent> int = ImportExpr  */
+
+/* <Field> Keyword.location = 0, location */
+/* <Field> Keyword.value = 1, expr */
+/* <Field> Keyword.arg = 2, str */
+/* <Parent> Location = LocationParent  */
+/* <Parent> string = Num  */
+/* <Parent> Operator = BinaryExpr  */
+/* <Parent> ParameterList = Function  */
+
+/* <Field> Pattern.location = 0, location */
+/* <Field> Pattern.parenthesised = 1, bool */
+/* <Parent> Pattern = PatternParent  */
+/* <Parent> PatternList = PatternListParent  */
+
+/* <Field> Stmt.location = 0, location */
+/* <Parent> Stmt = StmtList  */
+/* <Parent> StmtList = StmtListParent  */
+/* <Parent> string = StrParent  */
+/* <Parent> StringList = StrListParent  */
+
+/* <Field> TypeParameter.location = 0, location */
+/* <Parent> TypeParameter = TypeParameterList  */
+/* <Parent> TypeParameterList = TypeParameterListParent  */
+/* <Parent> Unaryop = UnaryExpr  */
+/* <Parent> Variable = VariableParent  */
+py_Classes(unique int id : @py_Class,
+    unique int parent : @py_ClassExpr ref);
+
+py_Functions(unique int id : @py_Function,
+    unique int parent : @py_Function_parent ref);
+
+py_Modules(unique int id : @py_Module);
+
+py_StringParts(unique int id : @py_StringPart,
+    int parent : @py_StringPart_list ref,
+    int idx : int ref);
+
+py_StringPart_lists(unique int id : @py_StringPart_list,
+    unique int parent : @py_Bytes_or_Str ref);
+
+py_TemplateString_lists(unique int id : @py_TemplateString_list,
+    unique int parent : @py_JoinedTemplateString ref);
+
+py_aliases(unique int id : @py_alias,
+    int parent : @py_alias_list ref,
+    int idx : int ref);
+
+py_alias_lists(unique int id : @py_alias_list,
+    unique int parent : @py_Import ref);
+
+py_arguments(unique int id : @py_arguments,
+    unique int parent : @py_arguments_parent ref);
+
+py_bools(int parent : @py_bool_parent ref,
+    int idx : int ref);
+
+py_boolops(unique int id : @py_boolop,
+    int kind: int ref,
+    unique int parent : @py_BoolExpr ref);
+
+py_bytes(varchar(1) id : string ref,
+    int parent : @py_Bytes ref,
+    int idx : int ref);
+
+py_cmpops(unique int id : @py_cmpop,
+    int kind: int ref,
+    int parent : @py_cmpop_list ref,
+    int idx : int ref);
+
+py_cmpop_lists(unique int id : @py_cmpop_list,
+    unique int parent : @py_Compare ref);
+
+py_comprehensions(unique int id : @py_comprehension,
+    int parent : @py_comprehension_list ref,
+    int idx : int ref);
+
+py_comprehension_lists(unique int id : @py_comprehension_list,
+    unique int parent : @py_ListComp ref);
+
+py_dict_items(unique int id : @py_dict_item,
+    int kind: int ref,
+    int parent : @py_dict_item_list ref,
+    int idx : int ref);
+
+py_dict_item_lists(unique int id : @py_dict_item_list,
+    unique int parent : @py_dict_item_list_parent ref);
+
+py_exprs(unique int id : @py_expr,
+    int kind: int ref,
+    int parent : @py_expr_parent ref,
+    int idx : int ref);
+
+py_expr_contexts(unique int id : @py_expr_context,
+    int kind: int ref,
+    unique int parent : @py_expr_context_parent ref);
+
+py_expr_lists(unique int id : @py_expr_list,
+    int parent : @py_expr_list_parent ref,
+    int idx : int ref);
+
+py_ints(int id : int ref,
+    unique int parent : @py_ImportExpr ref);
+
+py_locations(unique int id : @location ref,
+    unique int parent : @py_location_parent ref);
+
+py_numbers(varchar(1) id : string ref,
+    int parent : @py_Num ref,
+    int idx : int ref);
+
+py_operators(unique int id : @py_operator,
+    int kind: int ref,
+    unique int parent : @py_BinaryExpr ref);
+
+py_parameter_lists(unique int id : @py_parameter_list,
+    unique int parent : @py_Function ref);
+
+py_patterns(unique int id : @py_pattern,
+    int kind: int ref,
+    int parent : @py_pattern_parent ref,
+    int idx : int ref);
+
+py_pattern_lists(unique int id : @py_pattern_list,
+    int parent : @py_pattern_list_parent ref,
+    int idx : int ref);
+
+py_stmts(unique int id : @py_stmt,
+    int kind: int ref,
+    int parent : @py_stmt_list ref,
+    int idx : int ref);
+
+py_stmt_lists(unique int id : @py_stmt_list,
+    int parent : @py_stmt_list_parent ref,
+    int idx : int ref);
+
+py_strs(varchar(1) id : string ref,
+    int parent : @py_str_parent ref,
+    int idx : int ref);
+
+py_str_lists(unique int id : @py_str_list,
+    unique int parent : @py_str_list_parent ref);
+
+py_type_parameters(unique int id : @py_type_parameter,
+    int kind: int ref,
+    int parent : @py_type_parameter_list ref,
+    int idx : int ref);
+
+py_type_parameter_lists(unique int id : @py_type_parameter_list,
+    unique int parent : @py_type_parameter_list_parent ref);
+
+py_unaryops(unique int id : @py_unaryop,
+    int kind: int ref,
+    unique int parent : @py_UnaryExpr ref);
+
+py_variables(int id : @py_variable ref,
+    unique int parent : @py_variable_parent ref);
+
+case @py_boolop.kind of
+    0 = @py_And
+|   1 = @py_Or;
+
+case @py_cmpop.kind of
+    0 = @py_Eq
+|   1 = @py_Gt
+|   2 = @py_GtE
+|   3 = @py_In
+|   4 = @py_Is
+|   5 = @py_IsNot
+|   6 = @py_Lt
+|   7 = @py_LtE
+|   8 = @py_NotEq
+|   9 = @py_NotIn;
+
+case @py_dict_item.kind of
+    0 = @py_DictUnpacking
+|   1 = @py_KeyValuePair
+|   2 = @py_keyword;
+
+case @py_expr.kind of
+    0 = @py_Attribute
+|   1 = @py_BinaryExpr
+|   2 = @py_BoolExpr
+|   3 = @py_Bytes
+|   4 = @py_Call
+|   5 = @py_ClassExpr
+|   6 = @py_Compare
+|   7 = @py_Dict
+|   8 = @py_DictComp
+|   9 = @py_Ellipsis
+|   10 = @py_FunctionExpr
+|   11 = @py_GeneratorExp
+|   12 = @py_IfExp
+|   13 = @py_ImportExpr
+|   14 = @py_ImportMember
+|   15 = @py_Lambda
+|   16 = @py_List
+|   17 = @py_ListComp
+|   18 = @py_Guard
+|   19 = @py_Name
+|   20 = @py_Num
+|   21 = @py_Repr
+|   22 = @py_Set
+|   23 = @py_SetComp
+|   24 = @py_Slice
+|   25 = @py_Starred
+|   26 = @py_Str
+|   27 = @py_Subscript
+|   28 = @py_Tuple
+|   29 = @py_UnaryExpr
+|   30 = @py_Yield
+|   31 = @py_YieldFrom
+|   32 = @py_TemplateDottedNotation
+|   33 = @py_Filter
+|   34 = @py_PlaceHolder
+|   35 = @py_Await
+|   36 = @py_Fstring
+|   37 = @py_FormattedValue
+|   38 = @py_AssignExpr
+|   39 = @py_SpecialOperation
+|   40 = @py_TemplateString
+|   41 = @py_JoinedTemplateString
+|   42 = @py_TemplateStringPart;
+
+case @py_expr_context.kind of
+    0 = @py_AugLoad
+|   1 = @py_AugStore
+|   2 = @py_Del
+|   3 = @py_Load
+|   4 = @py_Param
+|   5 = @py_Store;
+
+case @py_operator.kind of
+    0 = @py_Add
+|   1 = @py_BitAnd
+|   2 = @py_BitOr
+|   3 = @py_BitXor
+|   4 = @py_Div
+|   5 = @py_FloorDiv
+|   6 = @py_LShift
+|   7 = @py_Mod
+|   8 = @py_Mult
+|   9 = @py_Pow
+|   10 = @py_RShift
+|   11 = @py_Sub
+|   12 = @py_MatMult;
+
+case @py_pattern.kind of
+    0 = @py_MatchAsPattern
+|   1 = @py_MatchOrPattern
+|   2 = @py_MatchLiteralPattern
+|   3 = @py_MatchCapturePattern
+|   4 = @py_MatchWildcardPattern
+|   5 = @py_MatchValuePattern
+|   6 = @py_MatchSequencePattern
+|   7 = @py_MatchStarPattern
+|   8 = @py_MatchMappingPattern
+|   9 = @py_MatchDoubleStarPattern
+|   10 = @py_MatchKeyValuePattern
+|   11 = @py_MatchClassPattern
+|   12 = @py_MatchKeywordPattern;
+
+case @py_stmt.kind of
+    0 = @py_Assert
+|   1 = @py_Assign
+|   2 = @py_AugAssign
+|   3 = @py_Break
+|   4 = @py_Continue
+|   5 = @py_Delete
+|   6 = @py_ExceptStmt
+|   7 = @py_ExceptGroupStmt
+|   8 = @py_Exec
+|   9 = @py_Expr_stmt
+|   10 = @py_For
+|   11 = @py_Global
+|   12 = @py_If
+|   13 = @py_Import
+|   14 = @py_ImportStar
+|   15 = @py_MatchStmt
+|   16 = @py_Case
+|   17 = @py_Nonlocal
+|   18 = @py_Pass
+|   19 = @py_Print
+|   20 = @py_Raise
+|   21 = @py_Return
+|   22 = @py_Try
+|   23 = @py_While
+|   24 = @py_With
+|   25 = @py_TemplateWrite
+|   26 = @py_AnnAssign
+|   27 = @py_TypeAlias;
+
+case @py_type_parameter.kind of
+    0 = @py_ParamSpec
+|   1 = @py_TypeVar
+|   2 = @py_TypeVarTuple;
+
+case @py_unaryop.kind of
+    0 = @py_Invert
+|   1 = @py_Not
+|   2 = @py_UAdd
+|   3 = @py_USub;
+
+@py_Bytes_or_Str = @py_Bytes | @py_Str;
+
+@py_Function_parent = @py_DictComp | @py_FunctionExpr | @py_GeneratorExp | @py_Lambda | @py_ListComp | @py_SetComp;
+
+@py_arguments_parent = @py_FunctionExpr | @py_Lambda;
+
+@py_ast_node = @py_Class | @py_Function | @py_Module | @py_StringPart | @py_comprehension | @py_dict_item | @py_expr | @py_pattern | @py_stmt | @py_type_parameter;
+
+@py_bool_parent = @py_For | @py_Function | @py_Print | @py_With | @py_expr | @py_pattern;
+
+@py_dict_item_list_parent = @py_Call | @py_ClassExpr | @py_Dict;
+
+@py_expr_context_parent = @py_Attribute | @py_List | @py_Name | @py_PlaceHolder | @py_Starred | @py_Subscript | @py_TemplateDottedNotation | @py_Tuple;
+
+@py_expr_list_parent = @py_Assign | @py_BoolExpr | @py_Call | @py_ClassExpr | @py_Compare | @py_Delete | @py_Fstring | @py_Function | @py_List | @py_Print | @py_Set | @py_SpecialOperation | @py_TemplateString | @py_Tuple | @py_arguments | @py_comprehension;
+
+@py_expr_or_stmt = @py_expr | @py_stmt;
+
+@py_expr_parent = @py_AnnAssign | @py_Assert | @py_Assign | @py_AssignExpr | @py_Attribute | @py_AugAssign | @py_Await | @py_BinaryExpr | @py_Call | @py_Case | @py_Compare | @py_DictComp | @py_DictUnpacking | @py_ExceptGroupStmt | @py_ExceptStmt | @py_Exec | @py_Expr_stmt | @py_Filter | @py_For | @py_FormattedValue | @py_Function | @py_FunctionExpr | @py_GeneratorExp | @py_Guard | @py_If | @py_IfExp | @py_ImportMember | @py_ImportStar | @py_KeyValuePair | @py_ListComp | @py_MatchAsPattern | @py_MatchCapturePattern | @py_MatchClassPattern | @py_MatchKeywordPattern | @py_MatchLiteralPattern | @py_MatchStmt | @py_MatchValuePattern | @py_ParamSpec | @py_Print | @py_Raise | @py_Repr | @py_Return | @py_SetComp | @py_Slice | @py_Starred | @py_Subscript | @py_TemplateDottedNotation | @py_TemplateString_list | @py_TemplateWrite | @py_TypeAlias | @py_TypeVar | @py_TypeVarTuple | @py_UnaryExpr | @py_While | @py_With | @py_Yield | @py_YieldFrom | @py_alias | @py_arguments | @py_comprehension | @py_expr_list | @py_keyword | @py_parameter_list;
+
+@py_location_parent = @py_DictUnpacking | @py_KeyValuePair | @py_StringPart | @py_comprehension | @py_expr | @py_keyword | @py_pattern | @py_stmt | @py_type_parameter;
+
+@py_parameter = @py_Name | @py_Tuple;
+
+@py_pattern_list_parent = @py_MatchClassPattern | @py_MatchMappingPattern | @py_MatchOrPattern | @py_MatchSequencePattern;
+
+@py_pattern_parent = @py_Case | @py_MatchAsPattern | @py_MatchDoubleStarPattern | @py_MatchKeyValuePattern | @py_MatchKeywordPattern | @py_MatchStarPattern | @py_pattern_list;
+
+@py_scope = @py_Class | @py_Function | @py_Module;
+
+@py_stmt_list_parent = @py_Case | @py_Class | @py_ExceptGroupStmt | @py_ExceptStmt | @py_For | @py_Function | @py_If | @py_MatchStmt | @py_Module | @py_Try | @py_While | @py_With;
+
+@py_str_list_parent = @py_Global | @py_Nonlocal;
+
+@py_str_parent = @py_Attribute | @py_Class | @py_ClassExpr | @py_FormattedValue | @py_Function | @py_FunctionExpr | @py_ImportExpr | @py_ImportMember | @py_Module | @py_SpecialOperation | @py_Str | @py_StringPart | @py_TemplateDottedNotation | @py_TemplateString | @py_TemplateStringPart | @py_keyword | @py_str_list;
+
+@py_type_parameter_list_parent = @py_ClassExpr | @py_Function | @py_TypeAlias;
+
+@py_variable_parent = @py_Name | @py_PlaceHolder;
+
+
+/*
+ * End of auto-generated part
+ */
+
+
+
+/* Map relative names to absolute names for imports */
+py_absolute_names(int module : @py_Module ref,
+                  varchar(1) relname : string ref,
+                  varchar(1) absname : string ref);
+
+py_exports(int id : @py_Module ref,
+           varchar(1) name : string ref);
+
+/* Successor information */
+py_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_true_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_exception_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_false_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_flow_bb_node(unique int flownode : @py_flow_node,
+             int realnode : @py_ast_node ref,
+             int basicblock : @py_flow_node ref,
+             int index : int ref);
+
+py_scope_flow(int flow : @py_flow_node ref,
+              int scope : @py_scope ref,
+              int kind : int ref);
+
+py_idoms(unique int node : @py_flow_node ref,
+         int immediate_dominator : @py_flow_node ref);
+
+py_ssa_phi(int phi : @py_ssa_var ref,
+           int arg: @py_ssa_var ref);
+
+py_ssa_var(unique int id : @py_ssa_var,
+            int var : @py_variable ref);
+
+py_ssa_use(int node: @py_flow_node ref,
+           int var : @py_ssa_var ref);
+
+py_ssa_defn(unique int id : @py_ssa_var ref,
+                  int node: @py_flow_node ref);
+
+@py_base_var = @py_variable | @py_ssa_var;
+
+py_scopes(unique int node : @py_expr_or_stmt ref,
+         int scope : @py_scope ref);
+
+py_scope_location(unique int id : @location ref,
+                   unique int scope : @py_scope ref);
+
+py_flags_versioned(varchar(1) name : string ref,
+                   varchar(1) value : string ref,
+                   varchar(1) version : string ref);
+
+py_syntax_error_versioned(unique int id : @location ref,
+                varchar(1) message : string ref,
+                varchar(1) version : string ref);
+
+py_comments(unique int id : @py_comment,
+           varchar(1) text : string ref,
+           unique int location : @location ref);
+
+/* Type information support */
+
+py_cobjects(unique int obj : @py_cobject);
+
+py_cobjecttypes(unique int obj : @py_cobject ref,
+                int typeof : @py_cobject ref);
+
+py_cobjectnames(unique int obj : @py_cobject ref,
+                varchar(1) name : string ref);
+
+/* Kind should be 0 for introspection, > 0 from source, as follows:
+   1 from C extension source
+ */
+py_cobject_sources(int obj : @py_cobject ref,
+                  int kind : int ref);
+
+py_cmembers_versioned(int object : @py_cobject ref,
+                      varchar(1) name : string ref,
+                      int member : @py_cobject ref,
+                      varchar(1) version : string ref);
+
+py_citems(int object : @py_cobject ref,
+            int index : int ref,
+            int member : @py_cobject ref);
+
+ext_argtype(int funcid : @py_object ref,
+            int arg : int ref,
+            int typeid : @py_object ref);
+
+ext_rettype(int funcid : @py_object ref,
+            int typeid : @py_object ref);
+
+ext_proptype(int propid : @py_object ref,
+             int typeid : @py_object ref);
+
+ext_argreturn(int funcid : @py_object ref,
+              int arg : int ref);
+
+py_special_objects(unique int obj : @py_cobject ref,
+                   unique varchar(1) name : string ref);
+
+py_decorated_object(int object : @py_object ref,
+                    int level: int ref);
+
+@py_object = @py_cobject | @py_flow_node;
+
+@py_source_element = @py_ast_node | @container;
+
+/** The union of all Python database entities */
+@top =
+  @py_source_element | @py_object | @py_base_var | @location | @py_line | @py_comment |
+      @py_expr_parent | @py_expr_context |
+      @py_operator | @py_boolop | @py_cmpop | @py_unaryop |
+      @py_cmpop_list | @py_alias_list | @py_StringPart_list | @py_comprehension_list | @py_dict_item_list | @py_pattern_list | @py_stmt_list | @py_str_list | @py_type_parameter_list |
+      @externalDefect | @externalMetric | @externalDataElement | @duplication_or_similarity | @svnentry |
+      @xmllocatable | @yaml_locatable;
diff --git a/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/semmlecode.python.dbscheme b/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/semmlecode.python.dbscheme
new file mode 100644
index 000000000000..279cbb08d387
--- /dev/null
+++ b/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/semmlecode.python.dbscheme
@@ -0,0 +1,1289 @@
+/*
+ *      This dbscheme is auto-generated by 'semmle/dbscheme_gen.py'.
+ *      Run "make dbscheme" in python/extractor/ to regenerate.
+ *      WARNING: Any modifications to this file will be lost.
+ *      Relations can be changed by modifying master.py or
+ *      by adding rules to dbscheme.template
+ */
+
+/* This is a dummy line to alter the dbscheme, so we can make a database upgrade
+ * without actually changing any of the dbscheme predicates. It contains a date
+ * to allow for such updates in the future as well.
+ *
+ * 2020-07-02
+ *
+ * DO NOT remove this comment carelessly, since it can revert the dbscheme back to a
+ * previously seen state (matching a previously seen SHA), which would make the upgrade
+ * mechanism not work properly.
+ */
+
+/*- DEPRECATED: External defects and metrics -*/
+
+externalDefects(
+  unique int id : @externalDefect,
+  varchar(900) queryPath : string ref,
+  int location : @location ref,
+  varchar(900) message : string ref,
+  float severity : float ref
+);
+
+externalMetrics(
+  unique int id : @externalMetric,
+  varchar(900) queryPath : string ref,
+  int location : @location ref,
+  float value : float ref
+);
+
+/*- External data -*/
+
+/**
+ * External data, loaded from CSV files during snapshot creation. See
+ * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
+ * for more information.
+ */
+externalData(
+  int id : @externalDataElement,
+  string path : string ref,
+  int column: int ref,
+  string value : string ref
+);
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- DEPRECATED: Snapshot date -*/
+
+snapshotDate(unique date snapshotDate : date ref);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- DEPRECATED: Duplicate code -*/
+
+duplicateCode(
+  unique int id : @duplication,
+  string relativePath : string ref,
+  int equivClass : int ref
+);
+
+similarCode(
+  unique int id : @similarity,
+  string relativePath : string ref,
+  int equivClass : int ref
+);
+
+@duplication_or_similarity = @duplication | @similarity
+
+tokens(
+  int id : @duplication_or_similarity ref,
+  int offset : int ref,
+  int beginLine : int ref,
+  int beginColumn : int ref,
+  int endLine : int ref,
+  int endColumn : int ref
+);
+
+/*- DEPRECATED: Version control data -*/
+
+svnentries(
+  unique int id : @svnentry,
+  string revision : string ref,
+  string author : string ref,
+  date revisionDate : date ref,
+  int changeSize : int ref
+)
+
+svnaffectedfiles(
+  int id : @svnentry ref,
+  int file : @file ref,
+  string action : string ref
+)
+
+svnentrymsg(
+  unique int id : @svnentry ref,
+  string message : string ref
+)
+
+svnchurn(
+  int commit : @svnentry ref,
+  int file : @file ref,
+  int addedLines : int ref,
+  int deletedLines : int ref
+)
+
+/*- Lines of code -*/
+
+numlines(
+  int element_id: @sourceline ref,
+  int num_lines: int ref,
+  int num_code: int ref,
+  int num_comment: int ref
+);
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- XML Files -*/
+
+xmlEncoding(
+  unique int id: @file ref,
+  string encoding: string ref
+);
+
+xmlDTDs(
+  unique int id: @xmldtd,
+  string root: string ref,
+  string publicId: string ref,
+  string systemId: string ref,
+  int fileid: @file ref
+);
+
+xmlElements(
+  unique int id: @xmlelement,
+  string name: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlAttrs(
+  unique int id: @xmlattribute,
+  int elementid: @xmlelement ref,
+  string name: string ref,
+  string value: string ref,
+  int idx: int ref,
+  int fileid: @file ref
+);
+
+xmlNs(
+  int id: @xmlnamespace,
+  string prefixName: string ref,
+  string URI: string ref,
+  int fileid: @file ref
+);
+
+xmlHasNs(
+  int elementId: @xmlnamespaceable ref,
+  int nsId: @xmlnamespace ref,
+  int fileid: @file ref
+);
+
+xmlComments(
+  unique int id: @xmlcomment,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int fileid: @file ref
+);
+
+xmlChars(
+  unique int id: @xmlcharacters,
+  string text: string ref,
+  int parentid: @xmlparent ref,
+  int idx: int ref,
+  int isCDATA: int ref,
+  int fileid: @file ref
+);
+
+@xmlparent = @file | @xmlelement;
+@xmlnamespaceable = @xmlelement | @xmlattribute;
+
+xmllocations(
+  int xmlElement: @xmllocatable ref,
+  int location: @location_default ref
+);
+
+@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Python dbscheme -*/
+
+/*
+ * Line metrics
+ */
+py_codelines(int id : @py_scope ref,
+             int count : int ref);
+
+py_commentlines(int id : @py_scope ref,
+                int count : int ref);
+
+py_docstringlines(int id : @py_scope ref,
+                int count : int ref);
+
+py_alllines(int id : @py_scope ref,
+                int count : int ref);
+
+/****************************
+        Python dbscheme
+****************************/
+
+@sourceline = @file | @py_Module | @xmllocatable;
+
+@location = @location_ast | @location_default ;
+
+locations_ast(unique int id: @location_ast,
+          int module: @py_Module ref,
+          int beginLine: int ref,
+          int beginColumn: int ref,
+          int endLine: int ref,
+          int endColumn: int ref);
+
+file_contents(unique int file: @file ref, string contents: string ref);
+
+py_module_path(int module: @py_Module ref, int file: @container ref);
+
+variable(unique int id : @py_variable,
+         int scope : @py_scope ref,
+         varchar(1) name : string ref);
+
+py_line_lengths(unique int id : @py_line,
+                int file: @py_Module ref,
+                int line : int ref,
+                int length : int ref);
+
+py_extracted_version(int module : @py_Module ref,
+                     varchar(1) version : string ref);
+
+/* AUTO GENERATED PART STARTS HERE */
+
+
+/* <Field> AnnAssign.location = 0, location */
+/* <Field> AnnAssign.value = 1, expr */
+/* <Field> AnnAssign.annotation = 2, expr */
+/* <Field> AnnAssign.target = 3, expr */
+
+/* <Field> Assert.location = 0, location */
+/* <Field> Assert.test = 1, expr */
+/* <Field> Assert.msg = 2, expr */
+
+/* <Field> Assign.location = 0, location */
+/* <Field> Assign.value = 1, expr */
+/* <Field> Assign.targets = 2, expr_list */
+
+/* <Field> AssignExpr.location = 0, location */
+/* <Field> AssignExpr.parenthesised = 1, bool */
+/* <Field> AssignExpr.value = 2, expr */
+/* <Field> AssignExpr.target = 3, expr */
+
+/* <Field> Attribute.location = 0, location */
+/* <Field> Attribute.parenthesised = 1, bool */
+/* <Field> Attribute.value = 2, expr */
+/* <Field> Attribute.attr = 3, str */
+/* <Field> Attribute.ctx = 4, expr_context */
+
+/* <Field> AugAssign.location = 0, location */
+/* <Field> AugAssign.operation = 1, BinOp */
+
+/* <Field> Await.location = 0, location */
+/* <Field> Await.parenthesised = 1, bool */
+/* <Field> Await.value = 2, expr */
+
+/* <Field> BinaryExpr.location = 0, location */
+/* <Field> BinaryExpr.parenthesised = 1, bool */
+/* <Field> BinaryExpr.left = 2, expr */
+/* <Field> BinaryExpr.op = 3, operator */
+/* <Field> BinaryExpr.right = 4, expr */
+/* <Parent> BinaryExpr = AugAssign  */
+
+/* <Field> BoolExpr.location = 0, location */
+/* <Field> BoolExpr.parenthesised = 1, bool */
+/* <Field> BoolExpr.op = 2, boolop */
+/* <Field> BoolExpr.values = 3, expr_list */
+
+/* <Field> Break.location = 0, location */
+
+/* <Field> Bytes.location = 0, location */
+/* <Field> Bytes.parenthesised = 1, bool */
+/* <Field> Bytes.s = 2, bytes */
+/* <Field> Bytes.prefix = 3, bytes */
+/* <Field> Bytes.implicitly_concatenated_parts = 4, StringPart_list */
+
+/* <Field> Call.location = 0, location */
+/* <Field> Call.parenthesised = 1, bool */
+/* <Field> Call.func = 2, expr */
+/* <Field> Call.positional_args = 3, expr_list */
+/* <Field> Call.named_args = 4, dict_item_list */
+
+/* <Field> Case.location = 0, location */
+/* <Field> Case.pattern = 1, pattern */
+/* <Field> Case.guard = 2, expr */
+/* <Field> Case.body = 3, stmt_list */
+
+/* <Field> Class.name = 0, str */
+/* <Field> Class.body = 1, stmt_list */
+/* <Parent> Class = ClassExpr  */
+
+/* <Field> ClassExpr.location = 0, location */
+/* <Field> ClassExpr.parenthesised = 1, bool */
+/* <Field> ClassExpr.name = 2, str */
+/* <Field> ClassExpr.bases = 3, expr_list */
+/* <Field> ClassExpr.keywords = 4, dict_item_list */
+/* <Field> ClassExpr.inner_scope = 5, Class */
+/* <Field> ClassExpr.type_parameters = 6, type_parameter_list */
+
+/* <Field> Compare.location = 0, location */
+/* <Field> Compare.parenthesised = 1, bool */
+/* <Field> Compare.left = 2, expr */
+/* <Field> Compare.ops = 3, cmpop_list */
+/* <Field> Compare.comparators = 4, expr_list */
+
+/* <Field> Continue.location = 0, location */
+
+/* <Field> Delete.location = 0, location */
+/* <Field> Delete.targets = 1, expr_list */
+
+/* <Field> Dict.location = 0, location */
+/* <Field> Dict.parenthesised = 1, bool */
+/* <Field> Dict.items = 2, dict_item_list */
+
+/* <Field> DictComp.location = 0, location */
+/* <Field> DictComp.parenthesised = 1, bool */
+/* <Field> DictComp.function = 2, Function */
+/* <Field> DictComp.iterable = 3, expr */
+
+/* <Field> DictUnpacking.location = 0, location */
+/* <Field> DictUnpacking.value = 1, expr */
+
+/* <Field> Ellipsis.location = 0, location */
+/* <Field> Ellipsis.parenthesised = 1, bool */
+
+/* <Field> ExceptGroupStmt.location = 0, location */
+/* <Field> ExceptGroupStmt.type = 1, expr */
+/* <Field> ExceptGroupStmt.name = 2, expr */
+/* <Field> ExceptGroupStmt.body = 3, stmt_list */
+
+/* <Field> ExceptStmt.location = 0, location */
+/* <Field> ExceptStmt.type = 1, expr */
+/* <Field> ExceptStmt.name = 2, expr */
+/* <Field> ExceptStmt.body = 3, stmt_list */
+
+/* <Field> Exec.location = 0, location */
+/* <Field> Exec.body = 1, expr */
+/* <Field> Exec.globals = 2, expr */
+/* <Field> Exec.locals = 3, expr */
+
+/* <Field> ExprStmt.location = 0, location */
+/* <Field> ExprStmt.value = 1, expr */
+
+/* <Field> Filter.location = 0, location */
+/* <Field> Filter.parenthesised = 1, bool */
+/* <Field> Filter.value = 2, expr */
+/* <Field> Filter.filter = 3, expr */
+
+/* <Field> For.location = 0, location */
+/* <Field> For.target = 1, expr */
+/* <Field> For.iter = 2, expr */
+/* <Field> For.body = 3, stmt_list */
+/* <Field> For.orelse = 4, stmt_list */
+/* <Field> For.is_async = 5, bool */
+
+/* <Field> FormattedValue.location = 0, location */
+/* <Field> FormattedValue.parenthesised = 1, bool */
+/* <Field> FormattedValue.value = 2, expr */
+/* <Field> FormattedValue.conversion = 3, str */
+/* <Field> FormattedValue.format_spec = 4, JoinedStr */
+
+/* <Field> Function.name = 0, str */
+/* <Field> Function.args = 1, parameter_list */
+/* <Field> Function.vararg = 2, expr */
+/* <Field> Function.kwonlyargs = 3, expr_list */
+/* <Field> Function.kwarg = 4, expr */
+/* <Field> Function.body = 5, stmt_list */
+/* <Field> Function.is_async = 6, bool */
+/* <Field> Function.type_parameters = 7, type_parameter_list */
+/* <Parent> Function = FunctionParent  */
+
+/* <Field> FunctionExpr.location = 0, location */
+/* <Field> FunctionExpr.parenthesised = 1, bool */
+/* <Field> FunctionExpr.name = 2, str */
+/* <Field> FunctionExpr.args = 3, arguments */
+/* <Field> FunctionExpr.returns = 4, expr */
+/* <Field> FunctionExpr.inner_scope = 5, Function */
+
+/* <Field> GeneratorExp.location = 0, location */
+/* <Field> GeneratorExp.parenthesised = 1, bool */
+/* <Field> GeneratorExp.function = 2, Function */
+/* <Field> GeneratorExp.iterable = 3, expr */
+
+/* <Field> Global.location = 0, location */
+/* <Field> Global.names = 1, str_list */
+
+/* <Field> Guard.location = 0, location */
+/* <Field> Guard.parenthesised = 1, bool */
+/* <Field> Guard.test = 2, expr */
+
+/* <Field> If.location = 0, location */
+/* <Field> If.test = 1, expr */
+/* <Field> If.body = 2, stmt_list */
+/* <Field> If.orelse = 3, stmt_list */
+
+/* <Field> IfExp.location = 0, location */
+/* <Field> IfExp.parenthesised = 1, bool */
+/* <Field> IfExp.test = 2, expr */
+/* <Field> IfExp.body = 3, expr */
+/* <Field> IfExp.orelse = 4, expr */
+
+/* <Field> Import.location = 0, location */
+/* <Field> Import.names = 1, alias_list */
+
+/* <Field> ImportExpr.location = 0, location */
+/* <Field> ImportExpr.parenthesised = 1, bool */
+/* <Field> ImportExpr.level = 2, int */
+/* <Field> ImportExpr.name = 3, str */
+/* <Field> ImportExpr.top = 4, bool */
+
+/* <Field> ImportStar.location = 0, location */
+/* <Field> ImportStar.module = 1, expr */
+
+/* <Field> ImportMember.location = 0, location */
+/* <Field> ImportMember.parenthesised = 1, bool */
+/* <Field> ImportMember.module = 2, expr */
+/* <Field> ImportMember.name = 3, str */
+
+/* <Field> Fstring.location = 0, location */
+/* <Field> Fstring.parenthesised = 1, bool */
+/* <Field> Fstring.values = 2, expr_list */
+/* <Parent> Fstring = FormattedValue  */
+
+/* <Field> JoinedTemplateString.location = 0, location */
+/* <Field> JoinedTemplateString.parenthesised = 1, bool */
+/* <Field> JoinedTemplateString.strings = 2, TemplateString_list */
+
+/* <Field> KeyValuePair.location = 0, location */
+/* <Field> KeyValuePair.value = 1, expr */
+/* <Field> KeyValuePair.key = 2, expr */
+
+/* <Field> Lambda.location = 0, location */
+/* <Field> Lambda.parenthesised = 1, bool */
+/* <Field> Lambda.args = 2, arguments */
+/* <Field> Lambda.inner_scope = 3, Function */
+
+/* <Field> List.location = 0, location */
+/* <Field> List.parenthesised = 1, bool */
+/* <Field> List.elts = 2, expr_list */
+/* <Field> List.ctx = 3, expr_context */
+
+/* <Field> ListComp.location = 0, location */
+/* <Field> ListComp.parenthesised = 1, bool */
+/* <Field> ListComp.function = 2, Function */
+/* <Field> ListComp.iterable = 3, expr */
+/* <Field> ListComp.generators = 4, comprehension_list */
+/* <Field> ListComp.elt = 5, expr */
+
+/* <Field> MatchStmt.location = 0, location */
+/* <Field> MatchStmt.subject = 1, expr */
+/* <Field> MatchStmt.cases = 2, stmt_list */
+
+/* <Field> MatchAsPattern.location = 0, location */
+/* <Field> MatchAsPattern.parenthesised = 1, bool */
+/* <Field> MatchAsPattern.pattern = 2, pattern */
+/* <Field> MatchAsPattern.alias = 3, expr */
+
+/* <Field> MatchCapturePattern.location = 0, location */
+/* <Field> MatchCapturePattern.parenthesised = 1, bool */
+/* <Field> MatchCapturePattern.variable = 2, expr */
+
+/* <Field> MatchClassPattern.location = 0, location */
+/* <Field> MatchClassPattern.parenthesised = 1, bool */
+/* <Field> MatchClassPattern.class = 2, expr */
+/* <Field> MatchClassPattern.class_name = 3, expr */
+/* <Field> MatchClassPattern.positional = 4, pattern_list */
+/* <Field> MatchClassPattern.keyword = 5, pattern_list */
+
+/* <Field> MatchDoubleStarPattern.location = 0, location */
+/* <Field> MatchDoubleStarPattern.parenthesised = 1, bool */
+/* <Field> MatchDoubleStarPattern.target = 2, pattern */
+
+/* <Field> MatchKeyValuePattern.location = 0, location */
+/* <Field> MatchKeyValuePattern.parenthesised = 1, bool */
+/* <Field> MatchKeyValuePattern.key = 2, pattern */
+/* <Field> MatchKeyValuePattern.value = 3, pattern */
+
+/* <Field> MatchKeywordPattern.location = 0, location */
+/* <Field> MatchKeywordPattern.parenthesised = 1, bool */
+/* <Field> MatchKeywordPattern.attribute = 2, expr */
+/* <Field> MatchKeywordPattern.value = 3, pattern */
+
+/* <Field> MatchLiteralPattern.location = 0, location */
+/* <Field> MatchLiteralPattern.parenthesised = 1, bool */
+/* <Field> MatchLiteralPattern.literal = 2, expr */
+
+/* <Field> MatchMappingPattern.location = 0, location */
+/* <Field> MatchMappingPattern.parenthesised = 1, bool */
+/* <Field> MatchMappingPattern.mappings = 2, pattern_list */
+
+/* <Field> MatchOrPattern.location = 0, location */
+/* <Field> MatchOrPattern.parenthesised = 1, bool */
+/* <Field> MatchOrPattern.patterns = 2, pattern_list */
+
+/* <Field> MatchSequencePattern.location = 0, location */
+/* <Field> MatchSequencePattern.parenthesised = 1, bool */
+/* <Field> MatchSequencePattern.patterns = 2, pattern_list */
+
+/* <Field> MatchStarPattern.location = 0, location */
+/* <Field> MatchStarPattern.parenthesised = 1, bool */
+/* <Field> MatchStarPattern.target = 2, pattern */
+
+/* <Field> MatchValuePattern.location = 0, location */
+/* <Field> MatchValuePattern.parenthesised = 1, bool */
+/* <Field> MatchValuePattern.value = 2, expr */
+
+/* <Field> MatchWildcardPattern.location = 0, location */
+/* <Field> MatchWildcardPattern.parenthesised = 1, bool */
+
+/* <Field> Module.name = 0, str */
+/* <Field> Module.hash = 1, str */
+/* <Field> Module.body = 2, stmt_list */
+/* <Field> Module.kind = 3, str */
+
+/* <Field> Name.location = 0, location */
+/* <Field> Name.parenthesised = 1, bool */
+/* <Field> Name.variable = 2, variable */
+/* <Field> Name.ctx = 3, expr_context */
+/* <Parent> Name = ParameterList  */
+
+/* <Field> Nonlocal.location = 0, location */
+/* <Field> Nonlocal.names = 1, str_list */
+
+/* <Field> Num.location = 0, location */
+/* <Field> Num.parenthesised = 1, bool */
+/* <Field> Num.n = 2, number */
+/* <Field> Num.text = 3, number */
+
+/* <Field> ParamSpec.location = 0, location */
+/* <Field> ParamSpec.name = 1, expr */
+/* <Field> ParamSpec.default = 2, expr */
+
+/* <Field> Pass.location = 0, location */
+
+/* <Field> PlaceHolder.location = 0, location */
+/* <Field> PlaceHolder.parenthesised = 1, bool */
+/* <Field> PlaceHolder.variable = 2, variable */
+/* <Field> PlaceHolder.ctx = 3, expr_context */
+
+/* <Field> Print.location = 0, location */
+/* <Field> Print.dest = 1, expr */
+/* <Field> Print.values = 2, expr_list */
+/* <Field> Print.nl = 3, bool */
+
+/* <Field> Raise.location = 0, location */
+/* <Field> Raise.exc = 1, expr */
+/* <Field> Raise.cause = 2, expr */
+/* <Field> Raise.type = 3, expr */
+/* <Field> Raise.inst = 4, expr */
+/* <Field> Raise.tback = 5, expr */
+
+/* <Field> Repr.location = 0, location */
+/* <Field> Repr.parenthesised = 1, bool */
+/* <Field> Repr.value = 2, expr */
+
+/* <Field> Return.location = 0, location */
+/* <Field> Return.value = 1, expr */
+
+/* <Field> Set.location = 0, location */
+/* <Field> Set.parenthesised = 1, bool */
+/* <Field> Set.elts = 2, expr_list */
+
+/* <Field> SetComp.location = 0, location */
+/* <Field> SetComp.parenthesised = 1, bool */
+/* <Field> SetComp.function = 2, Function */
+/* <Field> SetComp.iterable = 3, expr */
+
+/* <Field> Slice.location = 0, location */
+/* <Field> Slice.parenthesised = 1, bool */
+/* <Field> Slice.start = 2, expr */
+/* <Field> Slice.stop = 3, expr */
+/* <Field> Slice.step = 4, expr */
+
+/* <Field> SpecialOperation.location = 0, location */
+/* <Field> SpecialOperation.parenthesised = 1, bool */
+/* <Field> SpecialOperation.name = 2, str */
+/* <Field> SpecialOperation.arguments = 3, expr_list */
+
+/* <Field> Starred.location = 0, location */
+/* <Field> Starred.parenthesised = 1, bool */
+/* <Field> Starred.value = 2, expr */
+/* <Field> Starred.ctx = 3, expr_context */
+
+/* <Field> Str.location = 0, location */
+/* <Field> Str.parenthesised = 1, bool */
+/* <Field> Str.s = 2, str */
+/* <Field> Str.prefix = 3, str */
+/* <Field> Str.implicitly_concatenated_parts = 4, StringPart_list */
+
+/* <Field> StringPart.text = 0, str */
+/* <Field> StringPart.location = 1, location */
+/* <Parent> StringPart = StringPartList  */
+/* <Parent> StringPartList = BytesOrStr  */
+
+/* <Field> Subscript.location = 0, location */
+/* <Field> Subscript.parenthesised = 1, bool */
+/* <Field> Subscript.value = 2, expr */
+/* <Field> Subscript.index = 3, expr */
+/* <Field> Subscript.ctx = 4, expr_context */
+
+/* <Field> TemplateDottedNotation.location = 0, location */
+/* <Field> TemplateDottedNotation.parenthesised = 1, bool */
+/* <Field> TemplateDottedNotation.value = 2, expr */
+/* <Field> TemplateDottedNotation.attr = 3, str */
+/* <Field> TemplateDottedNotation.ctx = 4, expr_context */
+
+/* <Field> TemplateString.location = 0, location */
+/* <Field> TemplateString.parenthesised = 1, bool */
+/* <Field> TemplateString.prefix = 2, str */
+/* <Field> TemplateString.values = 3, expr_list */
+/* <Parent> TemplateString = TemplateStringList  */
+
+/* <Field> TemplateStringPart.location = 0, location */
+/* <Field> TemplateStringPart.parenthesised = 1, bool */
+/* <Field> TemplateStringPart.text = 2, str */
+/* <Parent> TemplateStringList = JoinedTemplateString  */
+
+/* <Field> TemplateWrite.location = 0, location */
+/* <Field> TemplateWrite.value = 1, expr */
+
+/* <Field> Try.location = 0, location */
+/* <Field> Try.body = 1, stmt_list */
+/* <Field> Try.orelse = 2, stmt_list */
+/* <Field> Try.handlers = 3, stmt_list */
+/* <Field> Try.finalbody = 4, stmt_list */
+
+/* <Field> Tuple.location = 0, location */
+/* <Field> Tuple.parenthesised = 1, bool */
+/* <Field> Tuple.elts = 2, expr_list */
+/* <Field> Tuple.ctx = 3, expr_context */
+/* <Parent> Tuple = ParameterList  */
+
+/* <Field> TypeAlias.location = 0, location */
+/* <Field> TypeAlias.name = 1, expr */
+/* <Field> TypeAlias.type_parameters = 2, type_parameter_list */
+/* <Field> TypeAlias.value = 3, expr */
+
+/* <Field> TypeVar.location = 0, location */
+/* <Field> TypeVar.name = 1, expr */
+/* <Field> TypeVar.bound = 2, expr */
+/* <Field> TypeVar.default = 3, expr */
+
+/* <Field> TypeVarTuple.location = 0, location */
+/* <Field> TypeVarTuple.name = 1, expr */
+/* <Field> TypeVarTuple.default = 2, expr */
+
+/* <Field> UnaryExpr.location = 0, location */
+/* <Field> UnaryExpr.parenthesised = 1, bool */
+/* <Field> UnaryExpr.op = 2, unaryop */
+/* <Field> UnaryExpr.operand = 3, expr */
+
+/* <Field> While.location = 0, location */
+/* <Field> While.test = 1, expr */
+/* <Field> While.body = 2, stmt_list */
+/* <Field> While.orelse = 3, stmt_list */
+
+/* <Field> With.location = 0, location */
+/* <Field> With.context_expr = 1, expr */
+/* <Field> With.optional_vars = 2, expr */
+/* <Field> With.body = 3, stmt_list */
+/* <Field> With.is_async = 4, bool */
+
+/* <Field> Yield.location = 0, location */
+/* <Field> Yield.parenthesised = 1, bool */
+/* <Field> Yield.value = 2, expr */
+
+/* <Field> YieldFrom.location = 0, location */
+/* <Field> YieldFrom.parenthesised = 1, bool */
+/* <Field> YieldFrom.value = 2, expr */
+
+/* <Field> Alias.value = 0, expr */
+/* <Field> Alias.asname = 1, expr */
+/* <Parent> Alias = AliasList  */
+/* <Parent> AliasList = Import  */
+
+/* <Field> Arguments.kw_defaults = 0, expr_list */
+/* <Field> Arguments.defaults = 1, expr_list */
+/* <Field> Arguments.annotations = 2, expr_list */
+/* <Field> Arguments.varargannotation = 3, expr */
+/* <Field> Arguments.kwargannotation = 4, expr */
+/* <Field> Arguments.kw_annotations = 5, expr_list */
+/* <Parent> Arguments = ArgumentsParent  */
+/* <Parent> boolean = BoolParent  */
+/* <Parent> Boolop = BoolExpr  */
+/* <Parent> string = Bytes  */
+/* <Parent> Cmpop = CmpopList  */
+/* <Parent> CmpopList = Compare  */
+
+/* <Field> Comprehension.location = 0, location */
+/* <Field> Comprehension.iter = 1, expr */
+/* <Field> Comprehension.target = 2, expr */
+/* <Field> Comprehension.ifs = 3, expr_list */
+/* <Parent> Comprehension = ComprehensionList  */
+/* <Parent> ComprehensionList = ListComp  */
+/* <Parent> DictItem = DictItemList  */
+/* <Parent> DictItemList = DictItemListParent  */
+
+/* <Field> Expr.location = 0, location */
+/* <Field> Expr.parenthesised = 1, bool */
+/* <Parent> Expr = ExprParent  */
+/* <Parent> ExprContext = ExprContextParent  */
+/* <Parent> ExprList = ExprListParent  */
+/* <Parent> int = ImportExpr  */
+
+/* <Field> Keyword.location = 0, location */
+/* <Field> Keyword.value = 1, expr */
+/* <Field> Keyword.arg = 2, str */
+/* <Parent> Location = LocationParent  */
+/* <Parent> string = Num  */
+/* <Parent> Operator = BinaryExpr  */
+/* <Parent> ParameterList = Function  */
+
+/* <Field> Pattern.location = 0, location */
+/* <Field> Pattern.parenthesised = 1, bool */
+/* <Parent> Pattern = PatternParent  */
+/* <Parent> PatternList = PatternListParent  */
+
+/* <Field> Stmt.location = 0, location */
+/* <Parent> Stmt = StmtList  */
+/* <Parent> StmtList = StmtListParent  */
+/* <Parent> string = StrParent  */
+/* <Parent> StringList = StrListParent  */
+
+/* <Field> TypeParameter.location = 0, location */
+/* <Parent> TypeParameter = TypeParameterList  */
+/* <Parent> TypeParameterList = TypeParameterListParent  */
+/* <Parent> Unaryop = UnaryExpr  */
+/* <Parent> Variable = VariableParent  */
+py_Classes(unique int id : @py_Class,
+    unique int parent : @py_ClassExpr ref);
+
+py_Functions(unique int id : @py_Function,
+    unique int parent : @py_Function_parent ref);
+
+py_Modules(unique int id : @py_Module);
+
+py_StringParts(unique int id : @py_StringPart,
+    int parent : @py_StringPart_list ref,
+    int idx : int ref);
+
+py_StringPart_lists(unique int id : @py_StringPart_list,
+    unique int parent : @py_Bytes_or_Str ref);
+
+py_TemplateString_lists(unique int id : @py_TemplateString_list,
+    unique int parent : @py_JoinedTemplateString ref);
+
+py_aliases(unique int id : @py_alias,
+    int parent : @py_alias_list ref,
+    int idx : int ref);
+
+py_alias_lists(unique int id : @py_alias_list,
+    unique int parent : @py_Import ref);
+
+py_arguments(unique int id : @py_arguments,
+    unique int parent : @py_arguments_parent ref);
+
+py_bools(int parent : @py_bool_parent ref,
+    int idx : int ref);
+
+py_boolops(unique int id : @py_boolop,
+    int kind: int ref,
+    unique int parent : @py_BoolExpr ref);
+
+py_bytes(varchar(1) id : string ref,
+    int parent : @py_Bytes ref,
+    int idx : int ref);
+
+py_cmpops(unique int id : @py_cmpop,
+    int kind: int ref,
+    int parent : @py_cmpop_list ref,
+    int idx : int ref);
+
+py_cmpop_lists(unique int id : @py_cmpop_list,
+    unique int parent : @py_Compare ref);
+
+py_comprehensions(unique int id : @py_comprehension,
+    int parent : @py_comprehension_list ref,
+    int idx : int ref);
+
+py_comprehension_lists(unique int id : @py_comprehension_list,
+    unique int parent : @py_ListComp ref);
+
+py_dict_items(unique int id : @py_dict_item,
+    int kind: int ref,
+    int parent : @py_dict_item_list ref,
+    int idx : int ref);
+
+py_dict_item_lists(unique int id : @py_dict_item_list,
+    unique int parent : @py_dict_item_list_parent ref);
+
+py_exprs(unique int id : @py_expr,
+    int kind: int ref,
+    int parent : @py_expr_parent ref,
+    int idx : int ref);
+
+py_expr_contexts(unique int id : @py_expr_context,
+    int kind: int ref,
+    unique int parent : @py_expr_context_parent ref);
+
+py_expr_lists(unique int id : @py_expr_list,
+    int parent : @py_expr_list_parent ref,
+    int idx : int ref);
+
+py_ints(int id : int ref,
+    unique int parent : @py_ImportExpr ref);
+
+py_locations(unique int id : @location ref,
+    unique int parent : @py_location_parent ref);
+
+py_numbers(varchar(1) id : string ref,
+    int parent : @py_Num ref,
+    int idx : int ref);
+
+py_operators(unique int id : @py_operator,
+    int kind: int ref,
+    unique int parent : @py_BinaryExpr ref);
+
+py_parameter_lists(unique int id : @py_parameter_list,
+    unique int parent : @py_Function ref);
+
+py_patterns(unique int id : @py_pattern,
+    int kind: int ref,
+    int parent : @py_pattern_parent ref,
+    int idx : int ref);
+
+py_pattern_lists(unique int id : @py_pattern_list,
+    int parent : @py_pattern_list_parent ref,
+    int idx : int ref);
+
+py_stmts(unique int id : @py_stmt,
+    int kind: int ref,
+    int parent : @py_stmt_list ref,
+    int idx : int ref);
+
+py_stmt_lists(unique int id : @py_stmt_list,
+    int parent : @py_stmt_list_parent ref,
+    int idx : int ref);
+
+py_strs(varchar(1) id : string ref,
+    int parent : @py_str_parent ref,
+    int idx : int ref);
+
+py_str_lists(unique int id : @py_str_list,
+    unique int parent : @py_str_list_parent ref);
+
+py_type_parameters(unique int id : @py_type_parameter,
+    int kind: int ref,
+    int parent : @py_type_parameter_list ref,
+    int idx : int ref);
+
+py_type_parameter_lists(unique int id : @py_type_parameter_list,
+    unique int parent : @py_type_parameter_list_parent ref);
+
+py_unaryops(unique int id : @py_unaryop,
+    int kind: int ref,
+    unique int parent : @py_UnaryExpr ref);
+
+py_variables(int id : @py_variable ref,
+    unique int parent : @py_variable_parent ref);
+
+case @py_boolop.kind of
+    0 = @py_And
+|   1 = @py_Or;
+
+case @py_cmpop.kind of
+    0 = @py_Eq
+|   1 = @py_Gt
+|   2 = @py_GtE
+|   3 = @py_In
+|   4 = @py_Is
+|   5 = @py_IsNot
+|   6 = @py_Lt
+|   7 = @py_LtE
+|   8 = @py_NotEq
+|   9 = @py_NotIn;
+
+case @py_dict_item.kind of
+    0 = @py_DictUnpacking
+|   1 = @py_KeyValuePair
+|   2 = @py_keyword;
+
+case @py_expr.kind of
+    0 = @py_Attribute
+|   1 = @py_BinaryExpr
+|   2 = @py_BoolExpr
+|   3 = @py_Bytes
+|   4 = @py_Call
+|   5 = @py_ClassExpr
+|   6 = @py_Compare
+|   7 = @py_Dict
+|   8 = @py_DictComp
+|   9 = @py_Ellipsis
+|   10 = @py_FunctionExpr
+|   11 = @py_GeneratorExp
+|   12 = @py_IfExp
+|   13 = @py_ImportExpr
+|   14 = @py_ImportMember
+|   15 = @py_Lambda
+|   16 = @py_List
+|   17 = @py_ListComp
+|   18 = @py_Guard
+|   19 = @py_Name
+|   20 = @py_Num
+|   21 = @py_Repr
+|   22 = @py_Set
+|   23 = @py_SetComp
+|   24 = @py_Slice
+|   25 = @py_Starred
+|   26 = @py_Str
+|   27 = @py_Subscript
+|   28 = @py_Tuple
+|   29 = @py_UnaryExpr
+|   30 = @py_Yield
+|   31 = @py_YieldFrom
+|   32 = @py_TemplateDottedNotation
+|   33 = @py_Filter
+|   34 = @py_PlaceHolder
+|   35 = @py_Await
+|   36 = @py_Fstring
+|   37 = @py_FormattedValue
+|   38 = @py_AssignExpr
+|   39 = @py_SpecialOperation
+|   40 = @py_TemplateString
+|   41 = @py_JoinedTemplateString
+|   42 = @py_TemplateStringPart;
+
+case @py_expr_context.kind of
+    0 = @py_AugLoad
+|   1 = @py_AugStore
+|   2 = @py_Del
+|   3 = @py_Load
+|   4 = @py_Param
+|   5 = @py_Store;
+
+case @py_operator.kind of
+    0 = @py_Add
+|   1 = @py_BitAnd
+|   2 = @py_BitOr
+|   3 = @py_BitXor
+|   4 = @py_Div
+|   5 = @py_FloorDiv
+|   6 = @py_LShift
+|   7 = @py_Mod
+|   8 = @py_Mult
+|   9 = @py_Pow
+|   10 = @py_RShift
+|   11 = @py_Sub
+|   12 = @py_MatMult;
+
+case @py_pattern.kind of
+    0 = @py_MatchAsPattern
+|   1 = @py_MatchOrPattern
+|   2 = @py_MatchLiteralPattern
+|   3 = @py_MatchCapturePattern
+|   4 = @py_MatchWildcardPattern
+|   5 = @py_MatchValuePattern
+|   6 = @py_MatchSequencePattern
+|   7 = @py_MatchStarPattern
+|   8 = @py_MatchMappingPattern
+|   9 = @py_MatchDoubleStarPattern
+|   10 = @py_MatchKeyValuePattern
+|   11 = @py_MatchClassPattern
+|   12 = @py_MatchKeywordPattern;
+
+case @py_stmt.kind of
+    0 = @py_Assert
+|   1 = @py_Assign
+|   2 = @py_AugAssign
+|   3 = @py_Break
+|   4 = @py_Continue
+|   5 = @py_Delete
+|   6 = @py_ExceptStmt
+|   7 = @py_ExceptGroupStmt
+|   8 = @py_Exec
+|   9 = @py_Expr_stmt
+|   10 = @py_For
+|   11 = @py_Global
+|   12 = @py_If
+|   13 = @py_Import
+|   14 = @py_ImportStar
+|   15 = @py_MatchStmt
+|   16 = @py_Case
+|   17 = @py_Nonlocal
+|   18 = @py_Pass
+|   19 = @py_Print
+|   20 = @py_Raise
+|   21 = @py_Return
+|   22 = @py_Try
+|   23 = @py_While
+|   24 = @py_With
+|   25 = @py_TemplateWrite
+|   26 = @py_AnnAssign
+|   27 = @py_TypeAlias;
+
+case @py_type_parameter.kind of
+    0 = @py_ParamSpec
+|   1 = @py_TypeVar
+|   2 = @py_TypeVarTuple;
+
+case @py_unaryop.kind of
+    0 = @py_Invert
+|   1 = @py_Not
+|   2 = @py_UAdd
+|   3 = @py_USub;
+
+@py_Bytes_or_Str = @py_Bytes | @py_Str;
+
+@py_Function_parent = @py_DictComp | @py_FunctionExpr | @py_GeneratorExp | @py_Lambda | @py_ListComp | @py_SetComp;
+
+@py_arguments_parent = @py_FunctionExpr | @py_Lambda;
+
+@py_ast_node = @py_Class | @py_Function | @py_Module | @py_StringPart | @py_comprehension | @py_dict_item | @py_expr | @py_pattern | @py_stmt | @py_type_parameter;
+
+@py_bool_parent = @py_For | @py_Function | @py_Print | @py_With | @py_expr | @py_pattern;
+
+@py_dict_item_list_parent = @py_Call | @py_ClassExpr | @py_Dict;
+
+@py_expr_context_parent = @py_Attribute | @py_List | @py_Name | @py_PlaceHolder | @py_Starred | @py_Subscript | @py_TemplateDottedNotation | @py_Tuple;
+
+@py_expr_list_parent = @py_Assign | @py_BoolExpr | @py_Call | @py_ClassExpr | @py_Compare | @py_Delete | @py_Fstring | @py_Function | @py_List | @py_Print | @py_Set | @py_SpecialOperation | @py_TemplateString | @py_Tuple | @py_arguments | @py_comprehension;
+
+@py_expr_or_stmt = @py_expr | @py_stmt;
+
+@py_expr_parent = @py_AnnAssign | @py_Assert | @py_Assign | @py_AssignExpr | @py_Attribute | @py_AugAssign | @py_Await | @py_BinaryExpr | @py_Call | @py_Case | @py_Compare | @py_DictComp | @py_DictUnpacking | @py_ExceptGroupStmt | @py_ExceptStmt | @py_Exec | @py_Expr_stmt | @py_Filter | @py_For | @py_FormattedValue | @py_Function | @py_FunctionExpr | @py_GeneratorExp | @py_Guard | @py_If | @py_IfExp | @py_ImportMember | @py_ImportStar | @py_KeyValuePair | @py_ListComp | @py_MatchAsPattern | @py_MatchCapturePattern | @py_MatchClassPattern | @py_MatchKeywordPattern | @py_MatchLiteralPattern | @py_MatchStmt | @py_MatchValuePattern | @py_ParamSpec | @py_Print | @py_Raise | @py_Repr | @py_Return | @py_SetComp | @py_Slice | @py_Starred | @py_Subscript | @py_TemplateDottedNotation | @py_TemplateString_list | @py_TemplateWrite | @py_TypeAlias | @py_TypeVar | @py_TypeVarTuple | @py_UnaryExpr | @py_While | @py_With | @py_Yield | @py_YieldFrom | @py_alias | @py_arguments | @py_comprehension | @py_expr_list | @py_keyword | @py_parameter_list;
+
+@py_location_parent = @py_DictUnpacking | @py_KeyValuePair | @py_StringPart | @py_comprehension | @py_expr | @py_keyword | @py_pattern | @py_stmt | @py_type_parameter;
+
+@py_parameter = @py_Name | @py_Tuple;
+
+@py_pattern_list_parent = @py_MatchClassPattern | @py_MatchMappingPattern | @py_MatchOrPattern | @py_MatchSequencePattern;
+
+@py_pattern_parent = @py_Case | @py_MatchAsPattern | @py_MatchDoubleStarPattern | @py_MatchKeyValuePattern | @py_MatchKeywordPattern | @py_MatchStarPattern | @py_pattern_list;
+
+@py_scope = @py_Class | @py_Function | @py_Module;
+
+@py_stmt_list_parent = @py_Case | @py_Class | @py_ExceptGroupStmt | @py_ExceptStmt | @py_For | @py_Function | @py_If | @py_MatchStmt | @py_Module | @py_Try | @py_While | @py_With;
+
+@py_str_list_parent = @py_Global | @py_Nonlocal;
+
+@py_str_parent = @py_Attribute | @py_Class | @py_ClassExpr | @py_FormattedValue | @py_Function | @py_FunctionExpr | @py_ImportExpr | @py_ImportMember | @py_Module | @py_SpecialOperation | @py_Str | @py_StringPart | @py_TemplateDottedNotation | @py_TemplateString | @py_TemplateStringPart | @py_keyword | @py_str_list;
+
+@py_type_parameter_list_parent = @py_ClassExpr | @py_Function | @py_TypeAlias;
+
+@py_variable_parent = @py_Name | @py_PlaceHolder;
+
+
+/*
+ * End of auto-generated part
+ */
+
+
+
+/* Map relative names to absolute names for imports */
+py_absolute_names(int module : @py_Module ref,
+                  varchar(1) relname : string ref,
+                  varchar(1) absname : string ref);
+
+py_exports(int id : @py_Module ref,
+           varchar(1) name : string ref);
+
+/* Successor information */
+py_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_true_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_exception_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_false_successors(int predecessor : @py_flow_node ref,
+              int successor : @py_flow_node ref);
+
+py_flow_bb_node(unique int flownode : @py_flow_node,
+             int realnode : @py_ast_node ref,
+             int basicblock : @py_flow_node ref,
+             int index : int ref);
+
+py_scope_flow(int flow : @py_flow_node ref,
+              int scope : @py_scope ref,
+              int kind : int ref);
+
+py_idoms(unique int node : @py_flow_node ref,
+         int immediate_dominator : @py_flow_node ref);
+
+py_ssa_phi(int phi : @py_ssa_var ref,
+           int arg: @py_ssa_var ref);
+
+py_ssa_var(unique int id : @py_ssa_var,
+            int var : @py_variable ref);
+
+py_ssa_use(int node: @py_flow_node ref,
+           int var : @py_ssa_var ref);
+
+py_ssa_defn(unique int id : @py_ssa_var ref,
+                  int node: @py_flow_node ref);
+
+@py_base_var = @py_variable | @py_ssa_var;
+
+py_scopes(unique int node : @py_expr_or_stmt ref,
+         int scope : @py_scope ref);
+
+py_scope_location(unique int id : @location ref,
+                   unique int scope : @py_scope ref);
+
+py_flags_versioned(varchar(1) name : string ref,
+                   varchar(1) value : string ref,
+                   varchar(1) version : string ref);
+
+py_syntax_error_versioned(unique int id : @location ref,
+                varchar(1) message : string ref,
+                varchar(1) version : string ref);
+
+py_comments(unique int id : @py_comment,
+           varchar(1) text : string ref,
+           unique int location : @location ref);
+
+/* Type information support */
+
+py_cobjects(unique int obj : @py_cobject);
+
+py_cobjecttypes(unique int obj : @py_cobject ref,
+                int typeof : @py_cobject ref);
+
+py_cobjectnames(unique int obj : @py_cobject ref,
+                varchar(1) name : string ref);
+
+/* Kind should be 0 for introspection, > 0 from source, as follows:
+   1 from C extension source
+ */
+py_cobject_sources(int obj : @py_cobject ref,
+                  int kind : int ref);
+
+py_cmembers_versioned(int object : @py_cobject ref,
+                      varchar(1) name : string ref,
+                      int member : @py_cobject ref,
+                      varchar(1) version : string ref);
+
+py_citems(int object : @py_cobject ref,
+            int index : int ref,
+            int member : @py_cobject ref);
+
+ext_argtype(int funcid : @py_object ref,
+            int arg : int ref,
+            int typeid : @py_object ref);
+
+ext_rettype(int funcid : @py_object ref,
+            int typeid : @py_object ref);
+
+ext_proptype(int propid : @py_object ref,
+             int typeid : @py_object ref);
+
+ext_argreturn(int funcid : @py_object ref,
+              int arg : int ref);
+
+py_special_objects(unique int obj : @py_cobject ref,
+                   unique varchar(1) name : string ref);
+
+py_decorated_object(int object : @py_object ref,
+                    int level: int ref);
+
+@py_object = @py_cobject | @py_flow_node;
+
+@py_source_element = @py_ast_node | @container;
+
+/** The union of all Python database entities */
+@top =
+  @py_source_element | @py_object | @py_base_var | @location | @py_line | @py_comment |
+      @py_expr_parent | @py_expr_context |
+      @py_operator | @py_boolop | @py_cmpop | @py_unaryop |
+      @py_cmpop_list | @py_alias_list | @py_StringPart_list | @py_comprehension_list | @py_dict_item_list | @py_pattern_list | @py_stmt_list | @py_str_list | @py_type_parameter_list |
+      @externalDefect | @externalMetric | @externalDataElement | @duplication_or_similarity | @svnentry |
+      @xmllocatable | @yaml_locatable;
diff --git a/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/upgrade.properties b/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/python/ql/lib/upgrades/8d257a4a9bc78e39856d6cd33499389fc5148d4f/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/ql/extractor/src/generator.rs b/ql/extractor/src/generator.rs
index 1dca6969f348..d1d5e20969c9 100644
--- a/ql/extractor/src/generator.rs
+++ b/ql/extractor/src/generator.rs
@@ -36,5 +36,6 @@ pub fn run(options: Options) -> std::io::Result<()> {
         },
     ];
 
-    generate(languages, options.dbscheme, options.library)
+    generate(languages, options.dbscheme, options.library,
+        "run 'scripts/create-extractor-pack.sh' in ql/")
 }
diff --git a/ql/ql/src/ql.dbscheme b/ql/ql/src/ql.dbscheme
index 98faa40569ea..87c1125b41a6 100644
--- a/ql/ql/src/ql.dbscheme
+++ b/ql/ql/src/ql.dbscheme
@@ -1,5 +1,6 @@
 // CodeQL database schema for QL
 // Automatically generated from the tree-sitter grammar; do not edit
+// To regenerate, run 'scripts/create-extractor-pack.sh' in ql/
 
 /*- Files and folders -*/
 
@@ -109,11 +110,23 @@ yaml_locations(unique int locatable: @yaml_locatable ref,
 @yaml_locatable = @yaml_node | @yaml_error;
 
 /*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
 databaseMetadata(
   string metadataKey: string ref,
   string value: string ref
 );
 
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
 overlayChangedFiles(
   string path: string ref
 );
diff --git a/ruby/Makefile b/ruby/Makefile
index ddaca6534fbd..34ae78023506 100644
--- a/ruby/Makefile
+++ b/ruby/Makefile
@@ -42,6 +42,7 @@ tools: $(BIN_FILES)
 ../target/release/%$(EXE):
 	cd extractor && cargo build --release
 
+.PHONY:	dbscheme
 dbscheme:
 	cd extractor && cargo build --release
 	../target/release/codeql-extractor-ruby generate --dbscheme ql/lib/ruby.dbscheme --library ql/lib/codeql/ruby/ast/internal/TreeSitter.qll
diff --git a/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/old.dbscheme b/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/old.dbscheme
new file mode 100644
index 000000000000..29b7b6fc1982
--- /dev/null
+++ b/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/old.dbscheme
@@ -0,0 +1,1549 @@
+// CodeQL database schema for Ruby
+// Automatically generated from the tree-sitter grammar; do not edit
+// To regenerate, run 'make dbscheme' in ql/ruby/
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Empty location -*/
+
+empty_location(
+  int location: @location_default ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- Diagnostic messages: severity -*/
+
+case @diagnostic.severity of
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
+;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- Ruby dbscheme -*/
+@ruby_underscore_arg = @ruby_assignment | @ruby_binary | @ruby_conditional | @ruby_operator_assignment | @ruby_range | @ruby_unary | @ruby_underscore_primary
+
+@ruby_underscore_call_operator = @ruby_reserved_word
+
+@ruby_underscore_expression = @ruby_assignment | @ruby_binary | @ruby_break | @ruby_call | @ruby_match_pattern | @ruby_next | @ruby_operator_assignment | @ruby_return | @ruby_test_pattern | @ruby_unary | @ruby_underscore_arg | @ruby_yield
+
+@ruby_underscore_lhs = @ruby_call | @ruby_element_reference | @ruby_scope_resolution | @ruby_token_false | @ruby_token_nil | @ruby_token_true | @ruby_underscore_variable
+
+@ruby_underscore_method_name = @ruby_delimited_symbol | @ruby_setter | @ruby_token_constant | @ruby_token_identifier | @ruby_token_operator | @ruby_token_simple_symbol | @ruby_underscore_nonlocal_variable
+
+@ruby_underscore_nonlocal_variable = @ruby_token_class_variable | @ruby_token_global_variable | @ruby_token_instance_variable
+
+@ruby_underscore_pattern_constant = @ruby_scope_resolution | @ruby_token_constant
+
+@ruby_underscore_pattern_expr = @ruby_alternative_pattern | @ruby_as_pattern | @ruby_underscore_pattern_expr_basic
+
+@ruby_underscore_pattern_expr_basic = @ruby_array_pattern | @ruby_expression_reference_pattern | @ruby_find_pattern | @ruby_hash_pattern | @ruby_parenthesized_pattern | @ruby_range | @ruby_token_identifier | @ruby_underscore_pattern_constant | @ruby_underscore_pattern_primitive | @ruby_variable_reference_pattern
+
+@ruby_underscore_pattern_primitive = @ruby_delimited_symbol | @ruby_lambda | @ruby_regex | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_symbol_array | @ruby_token_encoding | @ruby_token_false | @ruby_token_file | @ruby_token_heredoc_beginning | @ruby_token_line | @ruby_token_nil | @ruby_token_self | @ruby_token_simple_symbol | @ruby_token_true | @ruby_unary | @ruby_underscore_simple_numeric
+
+@ruby_underscore_pattern_top_expr_body = @ruby_array_pattern | @ruby_find_pattern | @ruby_hash_pattern | @ruby_underscore_pattern_expr
+
+@ruby_underscore_primary = @ruby_array | @ruby_begin | @ruby_break | @ruby_call | @ruby_case__ | @ruby_case_match | @ruby_chained_string | @ruby_class | @ruby_delimited_symbol | @ruby_for | @ruby_hash | @ruby_if | @ruby_lambda | @ruby_method | @ruby_module | @ruby_next | @ruby_parenthesized_statements | @ruby_redo | @ruby_regex | @ruby_retry | @ruby_return | @ruby_singleton_class | @ruby_singleton_method | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_symbol_array | @ruby_token_character | @ruby_token_heredoc_beginning | @ruby_token_simple_symbol | @ruby_unary | @ruby_underscore_lhs | @ruby_underscore_simple_numeric | @ruby_unless | @ruby_until | @ruby_while | @ruby_yield
+
+@ruby_underscore_simple_numeric = @ruby_complex | @ruby_rational | @ruby_token_float | @ruby_token_integer
+
+@ruby_underscore_statement = @ruby_alias | @ruby_begin_block | @ruby_end_block | @ruby_if_modifier | @ruby_rescue_modifier | @ruby_undef | @ruby_underscore_expression | @ruby_unless_modifier | @ruby_until_modifier | @ruby_while_modifier
+
+@ruby_underscore_variable = @ruby_token_constant | @ruby_token_identifier | @ruby_token_self | @ruby_token_super | @ruby_underscore_nonlocal_variable
+
+ruby_alias_def(
+  unique int id: @ruby_alias,
+  int alias: @ruby_underscore_method_name ref,
+  int name: @ruby_underscore_method_name ref
+);
+
+#keyset[ruby_alternative_pattern, index]
+ruby_alternative_pattern_alternatives(
+  int ruby_alternative_pattern: @ruby_alternative_pattern ref,
+  int index: int ref,
+  unique int alternatives: @ruby_underscore_pattern_expr_basic ref
+);
+
+ruby_alternative_pattern_def(
+  unique int id: @ruby_alternative_pattern
+);
+
+@ruby_argument_list_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_argument_list, index]
+ruby_argument_list_child(
+  int ruby_argument_list: @ruby_argument_list ref,
+  int index: int ref,
+  unique int child: @ruby_argument_list_child_type ref
+);
+
+ruby_argument_list_def(
+  unique int id: @ruby_argument_list
+);
+
+@ruby_array_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_array, index]
+ruby_array_child(
+  int ruby_array: @ruby_array ref,
+  int index: int ref,
+  unique int child: @ruby_array_child_type ref
+);
+
+ruby_array_def(
+  unique int id: @ruby_array
+);
+
+ruby_array_pattern_class(
+  unique int ruby_array_pattern: @ruby_array_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_array_pattern_child_type = @ruby_splat_parameter | @ruby_underscore_pattern_expr
+
+#keyset[ruby_array_pattern, index]
+ruby_array_pattern_child(
+  int ruby_array_pattern: @ruby_array_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_array_pattern_child_type ref
+);
+
+ruby_array_pattern_def(
+  unique int id: @ruby_array_pattern
+);
+
+ruby_as_pattern_def(
+  unique int id: @ruby_as_pattern,
+  int name: @ruby_token_identifier ref,
+  int value: @ruby_underscore_pattern_expr ref
+);
+
+@ruby_assignment_left_type = @ruby_left_assignment_list | @ruby_underscore_lhs
+
+@ruby_assignment_right_type = @ruby_rescue_modifier | @ruby_right_assignment_list | @ruby_splat_argument | @ruby_underscore_expression
+
+ruby_assignment_def(
+  unique int id: @ruby_assignment,
+  int left: @ruby_assignment_left_type ref,
+  int right: @ruby_assignment_right_type ref
+);
+
+@ruby_bare_string_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_bare_string, index]
+ruby_bare_string_child(
+  int ruby_bare_string: @ruby_bare_string ref,
+  int index: int ref,
+  unique int child: @ruby_bare_string_child_type ref
+);
+
+ruby_bare_string_def(
+  unique int id: @ruby_bare_string
+);
+
+@ruby_bare_symbol_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_bare_symbol, index]
+ruby_bare_symbol_child(
+  int ruby_bare_symbol: @ruby_bare_symbol ref,
+  int index: int ref,
+  unique int child: @ruby_bare_symbol_child_type ref
+);
+
+ruby_bare_symbol_def(
+  unique int id: @ruby_bare_symbol
+);
+
+@ruby_begin_child_type = @ruby_else | @ruby_ensure | @ruby_rescue | @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_begin, index]
+ruby_begin_child(
+  int ruby_begin: @ruby_begin ref,
+  int index: int ref,
+  unique int child: @ruby_begin_child_type ref
+);
+
+ruby_begin_def(
+  unique int id: @ruby_begin
+);
+
+@ruby_begin_block_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_begin_block, index]
+ruby_begin_block_child(
+  int ruby_begin_block: @ruby_begin_block ref,
+  int index: int ref,
+  unique int child: @ruby_begin_block_child_type ref
+);
+
+ruby_begin_block_def(
+  unique int id: @ruby_begin_block
+);
+
+@ruby_binary_left_type = @ruby_underscore_expression | @ruby_underscore_simple_numeric
+
+case @ruby_binary.operator of
+  0 = @ruby_binary_bangequal
+| 1 = @ruby_binary_bangtilde
+| 2 = @ruby_binary_percent
+| 3 = @ruby_binary_ampersand
+| 4 = @ruby_binary_ampersandampersand
+| 5 = @ruby_binary_star
+| 6 = @ruby_binary_starstar
+| 7 = @ruby_binary_plus
+| 8 = @ruby_binary_minus
+| 9 = @ruby_binary_slash
+| 10 = @ruby_binary_langle
+| 11 = @ruby_binary_langlelangle
+| 12 = @ruby_binary_langleequal
+| 13 = @ruby_binary_langleequalrangle
+| 14 = @ruby_binary_equalequal
+| 15 = @ruby_binary_equalequalequal
+| 16 = @ruby_binary_equaltilde
+| 17 = @ruby_binary_rangle
+| 18 = @ruby_binary_rangleequal
+| 19 = @ruby_binary_ranglerangle
+| 20 = @ruby_binary_caret
+| 21 = @ruby_binary_and
+| 22 = @ruby_binary_or
+| 23 = @ruby_binary_pipe
+| 24 = @ruby_binary_pipepipe
+;
+
+
+ruby_binary_def(
+  unique int id: @ruby_binary,
+  int left: @ruby_binary_left_type ref,
+  int operator: int ref,
+  int right: @ruby_underscore_expression ref
+);
+
+ruby_block_body(
+  unique int ruby_block: @ruby_block ref,
+  unique int body: @ruby_block_body ref
+);
+
+ruby_block_parameters(
+  unique int ruby_block: @ruby_block ref,
+  unique int parameters: @ruby_block_parameters ref
+);
+
+ruby_block_def(
+  unique int id: @ruby_block
+);
+
+ruby_block_argument_child(
+  unique int ruby_block_argument: @ruby_block_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_block_argument_def(
+  unique int id: @ruby_block_argument
+);
+
+@ruby_block_body_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_block_body, index]
+ruby_block_body_child(
+  int ruby_block_body: @ruby_block_body ref,
+  int index: int ref,
+  unique int child: @ruby_block_body_child_type ref
+);
+
+ruby_block_body_def(
+  unique int id: @ruby_block_body
+);
+
+ruby_block_parameter_name(
+  unique int ruby_block_parameter: @ruby_block_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_block_parameter_def(
+  unique int id: @ruby_block_parameter
+);
+
+#keyset[ruby_block_parameters, index]
+ruby_block_parameters_locals(
+  int ruby_block_parameters: @ruby_block_parameters ref,
+  int index: int ref,
+  unique int locals: @ruby_token_identifier ref
+);
+
+@ruby_block_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_block_parameters, index]
+ruby_block_parameters_child(
+  int ruby_block_parameters: @ruby_block_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_block_parameters_child_type ref
+);
+
+ruby_block_parameters_def(
+  unique int id: @ruby_block_parameters
+);
+
+@ruby_body_statement_child_type = @ruby_else | @ruby_ensure | @ruby_rescue | @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_body_statement, index]
+ruby_body_statement_child(
+  int ruby_body_statement: @ruby_body_statement ref,
+  int index: int ref,
+  unique int child: @ruby_body_statement_child_type ref
+);
+
+ruby_body_statement_def(
+  unique int id: @ruby_body_statement
+);
+
+ruby_break_child(
+  unique int ruby_break: @ruby_break ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_break_def(
+  unique int id: @ruby_break
+);
+
+ruby_call_arguments(
+  unique int ruby_call: @ruby_call ref,
+  unique int arguments: @ruby_argument_list ref
+);
+
+@ruby_call_block_type = @ruby_block | @ruby_do_block
+
+ruby_call_block(
+  unique int ruby_call: @ruby_call ref,
+  unique int block: @ruby_call_block_type ref
+);
+
+@ruby_call_method_type = @ruby_token_operator | @ruby_underscore_variable
+
+ruby_call_method(
+  unique int ruby_call: @ruby_call ref,
+  unique int method: @ruby_call_method_type ref
+);
+
+ruby_call_operator(
+  unique int ruby_call: @ruby_call ref,
+  unique int operator: @ruby_underscore_call_operator ref
+);
+
+ruby_call_receiver(
+  unique int ruby_call: @ruby_call ref,
+  unique int receiver: @ruby_underscore_primary ref
+);
+
+ruby_call_def(
+  unique int id: @ruby_call
+);
+
+ruby_case_value(
+  unique int ruby_case__: @ruby_case__ ref,
+  unique int value: @ruby_underscore_statement ref
+);
+
+@ruby_case_child_type = @ruby_else | @ruby_when
+
+#keyset[ruby_case__, index]
+ruby_case_child(
+  int ruby_case__: @ruby_case__ ref,
+  int index: int ref,
+  unique int child: @ruby_case_child_type ref
+);
+
+ruby_case_def(
+  unique int id: @ruby_case__
+);
+
+#keyset[ruby_case_match, index]
+ruby_case_match_clauses(
+  int ruby_case_match: @ruby_case_match ref,
+  int index: int ref,
+  unique int clauses: @ruby_in_clause ref
+);
+
+ruby_case_match_else(
+  unique int ruby_case_match: @ruby_case_match ref,
+  unique int else: @ruby_else ref
+);
+
+ruby_case_match_def(
+  unique int id: @ruby_case_match,
+  int value: @ruby_underscore_statement ref
+);
+
+#keyset[ruby_chained_string, index]
+ruby_chained_string_child(
+  int ruby_chained_string: @ruby_chained_string ref,
+  int index: int ref,
+  unique int child: @ruby_string__ ref
+);
+
+ruby_chained_string_def(
+  unique int id: @ruby_chained_string
+);
+
+ruby_class_body(
+  unique int ruby_class: @ruby_class ref,
+  unique int body: @ruby_body_statement ref
+);
+
+@ruby_class_name_type = @ruby_scope_resolution | @ruby_token_constant
+
+ruby_class_superclass(
+  unique int ruby_class: @ruby_class ref,
+  unique int superclass: @ruby_superclass ref
+);
+
+ruby_class_def(
+  unique int id: @ruby_class,
+  int name: @ruby_class_name_type ref
+);
+
+@ruby_complex_child_type = @ruby_rational | @ruby_token_float | @ruby_token_integer
+
+ruby_complex_def(
+  unique int id: @ruby_complex,
+  int child: @ruby_complex_child_type ref
+);
+
+ruby_conditional_def(
+  unique int id: @ruby_conditional,
+  int alternative: @ruby_underscore_arg ref,
+  int condition: @ruby_underscore_arg ref,
+  int consequence: @ruby_underscore_arg ref
+);
+
+@ruby_delimited_symbol_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_delimited_symbol, index]
+ruby_delimited_symbol_child(
+  int ruby_delimited_symbol: @ruby_delimited_symbol ref,
+  int index: int ref,
+  unique int child: @ruby_delimited_symbol_child_type ref
+);
+
+ruby_delimited_symbol_def(
+  unique int id: @ruby_delimited_symbol
+);
+
+@ruby_destructured_left_assignment_child_type = @ruby_destructured_left_assignment | @ruby_rest_assignment | @ruby_underscore_lhs
+
+#keyset[ruby_destructured_left_assignment, index]
+ruby_destructured_left_assignment_child(
+  int ruby_destructured_left_assignment: @ruby_destructured_left_assignment ref,
+  int index: int ref,
+  unique int child: @ruby_destructured_left_assignment_child_type ref
+);
+
+ruby_destructured_left_assignment_def(
+  unique int id: @ruby_destructured_left_assignment
+);
+
+@ruby_destructured_parameter_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_destructured_parameter, index]
+ruby_destructured_parameter_child(
+  int ruby_destructured_parameter: @ruby_destructured_parameter ref,
+  int index: int ref,
+  unique int child: @ruby_destructured_parameter_child_type ref
+);
+
+ruby_destructured_parameter_def(
+  unique int id: @ruby_destructured_parameter
+);
+
+@ruby_do_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_do, index]
+ruby_do_child(
+  int ruby_do: @ruby_do ref,
+  int index: int ref,
+  unique int child: @ruby_do_child_type ref
+);
+
+ruby_do_def(
+  unique int id: @ruby_do
+);
+
+ruby_do_block_body(
+  unique int ruby_do_block: @ruby_do_block ref,
+  unique int body: @ruby_body_statement ref
+);
+
+ruby_do_block_parameters(
+  unique int ruby_do_block: @ruby_do_block ref,
+  unique int parameters: @ruby_block_parameters ref
+);
+
+ruby_do_block_def(
+  unique int id: @ruby_do_block
+);
+
+@ruby_element_reference_block_type = @ruby_block | @ruby_do_block
+
+ruby_element_reference_block(
+  unique int ruby_element_reference: @ruby_element_reference ref,
+  unique int block: @ruby_element_reference_block_type ref
+);
+
+@ruby_element_reference_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_element_reference, index]
+ruby_element_reference_child(
+  int ruby_element_reference: @ruby_element_reference ref,
+  int index: int ref,
+  unique int child: @ruby_element_reference_child_type ref
+);
+
+ruby_element_reference_def(
+  unique int id: @ruby_element_reference,
+  int object: @ruby_underscore_primary ref
+);
+
+@ruby_else_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_else, index]
+ruby_else_child(
+  int ruby_else: @ruby_else ref,
+  int index: int ref,
+  unique int child: @ruby_else_child_type ref
+);
+
+ruby_else_def(
+  unique int id: @ruby_else
+);
+
+@ruby_elsif_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_elsif_alternative(
+  unique int ruby_elsif: @ruby_elsif ref,
+  unique int alternative: @ruby_elsif_alternative_type ref
+);
+
+ruby_elsif_consequence(
+  unique int ruby_elsif: @ruby_elsif ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_elsif_def(
+  unique int id: @ruby_elsif,
+  int condition: @ruby_underscore_statement ref
+);
+
+@ruby_end_block_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_end_block, index]
+ruby_end_block_child(
+  int ruby_end_block: @ruby_end_block ref,
+  int index: int ref,
+  unique int child: @ruby_end_block_child_type ref
+);
+
+ruby_end_block_def(
+  unique int id: @ruby_end_block
+);
+
+@ruby_ensure_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_ensure, index]
+ruby_ensure_child(
+  int ruby_ensure: @ruby_ensure ref,
+  int index: int ref,
+  unique int child: @ruby_ensure_child_type ref
+);
+
+ruby_ensure_def(
+  unique int id: @ruby_ensure
+);
+
+ruby_exception_variable_def(
+  unique int id: @ruby_exception_variable,
+  int child: @ruby_underscore_lhs ref
+);
+
+@ruby_exceptions_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+#keyset[ruby_exceptions, index]
+ruby_exceptions_child(
+  int ruby_exceptions: @ruby_exceptions ref,
+  int index: int ref,
+  unique int child: @ruby_exceptions_child_type ref
+);
+
+ruby_exceptions_def(
+  unique int id: @ruby_exceptions
+);
+
+ruby_expression_reference_pattern_def(
+  unique int id: @ruby_expression_reference_pattern,
+  int value: @ruby_underscore_expression ref
+);
+
+ruby_find_pattern_class(
+  unique int ruby_find_pattern: @ruby_find_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_find_pattern_child_type = @ruby_splat_parameter | @ruby_underscore_pattern_expr
+
+#keyset[ruby_find_pattern, index]
+ruby_find_pattern_child(
+  int ruby_find_pattern: @ruby_find_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_find_pattern_child_type ref
+);
+
+ruby_find_pattern_def(
+  unique int id: @ruby_find_pattern
+);
+
+@ruby_for_pattern_type = @ruby_left_assignment_list | @ruby_underscore_lhs
+
+ruby_for_def(
+  unique int id: @ruby_for,
+  int body: @ruby_do ref,
+  int pattern: @ruby_for_pattern_type ref,
+  int value: @ruby_in ref
+);
+
+@ruby_hash_child_type = @ruby_hash_splat_argument | @ruby_pair
+
+#keyset[ruby_hash, index]
+ruby_hash_child(
+  int ruby_hash: @ruby_hash ref,
+  int index: int ref,
+  unique int child: @ruby_hash_child_type ref
+);
+
+ruby_hash_def(
+  unique int id: @ruby_hash
+);
+
+ruby_hash_pattern_class(
+  unique int ruby_hash_pattern: @ruby_hash_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_hash_pattern_child_type = @ruby_hash_splat_parameter | @ruby_keyword_pattern | @ruby_token_hash_splat_nil
+
+#keyset[ruby_hash_pattern, index]
+ruby_hash_pattern_child(
+  int ruby_hash_pattern: @ruby_hash_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_hash_pattern_child_type ref
+);
+
+ruby_hash_pattern_def(
+  unique int id: @ruby_hash_pattern
+);
+
+ruby_hash_splat_argument_child(
+  unique int ruby_hash_splat_argument: @ruby_hash_splat_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_hash_splat_argument_def(
+  unique int id: @ruby_hash_splat_argument
+);
+
+ruby_hash_splat_parameter_name(
+  unique int ruby_hash_splat_parameter: @ruby_hash_splat_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_hash_splat_parameter_def(
+  unique int id: @ruby_hash_splat_parameter
+);
+
+@ruby_heredoc_body_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_heredoc_content | @ruby_token_heredoc_end
+
+#keyset[ruby_heredoc_body, index]
+ruby_heredoc_body_child(
+  int ruby_heredoc_body: @ruby_heredoc_body ref,
+  int index: int ref,
+  unique int child: @ruby_heredoc_body_child_type ref
+);
+
+ruby_heredoc_body_def(
+  unique int id: @ruby_heredoc_body
+);
+
+@ruby_if_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_if_alternative(
+  unique int ruby_if: @ruby_if ref,
+  unique int alternative: @ruby_if_alternative_type ref
+);
+
+ruby_if_consequence(
+  unique int ruby_if: @ruby_if ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_if_def(
+  unique int id: @ruby_if,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_if_guard_def(
+  unique int id: @ruby_if_guard,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_if_modifier_def(
+  unique int id: @ruby_if_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_in_def(
+  unique int id: @ruby_in,
+  int child: @ruby_underscore_arg ref
+);
+
+ruby_in_clause_body(
+  unique int ruby_in_clause: @ruby_in_clause ref,
+  unique int body: @ruby_then ref
+);
+
+@ruby_in_clause_guard_type = @ruby_if_guard | @ruby_unless_guard
+
+ruby_in_clause_guard(
+  unique int ruby_in_clause: @ruby_in_clause ref,
+  unique int guard: @ruby_in_clause_guard_type ref
+);
+
+ruby_in_clause_def(
+  unique int id: @ruby_in_clause,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref
+);
+
+@ruby_interpolation_child_type = @ruby_token_empty_statement | @ruby_underscore_nonlocal_variable | @ruby_underscore_statement
+
+#keyset[ruby_interpolation, index]
+ruby_interpolation_child(
+  int ruby_interpolation: @ruby_interpolation ref,
+  int index: int ref,
+  unique int child: @ruby_interpolation_child_type ref
+);
+
+ruby_interpolation_def(
+  unique int id: @ruby_interpolation
+);
+
+ruby_keyword_parameter_value(
+  unique int ruby_keyword_parameter: @ruby_keyword_parameter ref,
+  unique int value: @ruby_underscore_arg ref
+);
+
+ruby_keyword_parameter_def(
+  unique int id: @ruby_keyword_parameter,
+  int name: @ruby_token_identifier ref
+);
+
+@ruby_keyword_pattern_key_type = @ruby_string__ | @ruby_token_hash_key_symbol
+
+ruby_keyword_pattern_value(
+  unique int ruby_keyword_pattern: @ruby_keyword_pattern ref,
+  unique int value: @ruby_underscore_pattern_expr ref
+);
+
+ruby_keyword_pattern_def(
+  unique int id: @ruby_keyword_pattern,
+  int key__: @ruby_keyword_pattern_key_type ref
+);
+
+@ruby_lambda_body_type = @ruby_block | @ruby_do_block
+
+ruby_lambda_parameters(
+  unique int ruby_lambda: @ruby_lambda ref,
+  unique int parameters: @ruby_lambda_parameters ref
+);
+
+ruby_lambda_def(
+  unique int id: @ruby_lambda,
+  int body: @ruby_lambda_body_type ref
+);
+
+@ruby_lambda_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_lambda_parameters, index]
+ruby_lambda_parameters_child(
+  int ruby_lambda_parameters: @ruby_lambda_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_lambda_parameters_child_type ref
+);
+
+ruby_lambda_parameters_def(
+  unique int id: @ruby_lambda_parameters
+);
+
+@ruby_left_assignment_list_child_type = @ruby_destructured_left_assignment | @ruby_rest_assignment | @ruby_underscore_lhs
+
+#keyset[ruby_left_assignment_list, index]
+ruby_left_assignment_list_child(
+  int ruby_left_assignment_list: @ruby_left_assignment_list ref,
+  int index: int ref,
+  unique int child: @ruby_left_assignment_list_child_type ref
+);
+
+ruby_left_assignment_list_def(
+  unique int id: @ruby_left_assignment_list
+);
+
+ruby_match_pattern_def(
+  unique int id: @ruby_match_pattern,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_method_body_type = @ruby_body_statement | @ruby_rescue_modifier | @ruby_underscore_arg
+
+ruby_method_body(
+  unique int ruby_method: @ruby_method ref,
+  unique int body: @ruby_method_body_type ref
+);
+
+ruby_method_parameters(
+  unique int ruby_method: @ruby_method ref,
+  unique int parameters: @ruby_method_parameters ref
+);
+
+ruby_method_def(
+  unique int id: @ruby_method,
+  int name: @ruby_underscore_method_name ref
+);
+
+@ruby_method_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_method_parameters, index]
+ruby_method_parameters_child(
+  int ruby_method_parameters: @ruby_method_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_method_parameters_child_type ref
+);
+
+ruby_method_parameters_def(
+  unique int id: @ruby_method_parameters
+);
+
+ruby_module_body(
+  unique int ruby_module: @ruby_module ref,
+  unique int body: @ruby_body_statement ref
+);
+
+@ruby_module_name_type = @ruby_scope_resolution | @ruby_token_constant
+
+ruby_module_def(
+  unique int id: @ruby_module,
+  int name: @ruby_module_name_type ref
+);
+
+ruby_next_child(
+  unique int ruby_next: @ruby_next ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_next_def(
+  unique int id: @ruby_next
+);
+
+case @ruby_operator_assignment.operator of
+  0 = @ruby_operator_assignment_percentequal
+| 1 = @ruby_operator_assignment_ampersandampersandequal
+| 2 = @ruby_operator_assignment_ampersandequal
+| 3 = @ruby_operator_assignment_starstarequal
+| 4 = @ruby_operator_assignment_starequal
+| 5 = @ruby_operator_assignment_plusequal
+| 6 = @ruby_operator_assignment_minusequal
+| 7 = @ruby_operator_assignment_slashequal
+| 8 = @ruby_operator_assignment_langlelangleequal
+| 9 = @ruby_operator_assignment_ranglerangleequal
+| 10 = @ruby_operator_assignment_caretequal
+| 11 = @ruby_operator_assignment_pipeequal
+| 12 = @ruby_operator_assignment_pipepipeequal
+;
+
+
+@ruby_operator_assignment_right_type = @ruby_rescue_modifier | @ruby_underscore_expression
+
+ruby_operator_assignment_def(
+  unique int id: @ruby_operator_assignment,
+  int left: @ruby_underscore_lhs ref,
+  int operator: int ref,
+  int right: @ruby_operator_assignment_right_type ref
+);
+
+ruby_optional_parameter_def(
+  unique int id: @ruby_optional_parameter,
+  int name: @ruby_token_identifier ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_pair_key_type = @ruby_string__ | @ruby_token_hash_key_symbol | @ruby_underscore_arg
+
+ruby_pair_value(
+  unique int ruby_pair: @ruby_pair ref,
+  unique int value: @ruby_underscore_arg ref
+);
+
+ruby_pair_def(
+  unique int id: @ruby_pair,
+  int key__: @ruby_pair_key_type ref
+);
+
+ruby_parenthesized_pattern_def(
+  unique int id: @ruby_parenthesized_pattern,
+  int child: @ruby_underscore_pattern_expr ref
+);
+
+@ruby_parenthesized_statements_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_parenthesized_statements, index]
+ruby_parenthesized_statements_child(
+  int ruby_parenthesized_statements: @ruby_parenthesized_statements ref,
+  int index: int ref,
+  unique int child: @ruby_parenthesized_statements_child_type ref
+);
+
+ruby_parenthesized_statements_def(
+  unique int id: @ruby_parenthesized_statements
+);
+
+@ruby_pattern_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+ruby_pattern_def(
+  unique int id: @ruby_pattern,
+  int child: @ruby_pattern_child_type ref
+);
+
+@ruby_program_child_type = @ruby_token_empty_statement | @ruby_token_uninterpreted | @ruby_underscore_statement
+
+#keyset[ruby_program, index]
+ruby_program_child(
+  int ruby_program: @ruby_program ref,
+  int index: int ref,
+  unique int child: @ruby_program_child_type ref
+);
+
+ruby_program_def(
+  unique int id: @ruby_program
+);
+
+@ruby_range_begin_type = @ruby_underscore_arg | @ruby_underscore_pattern_primitive
+
+ruby_range_begin(
+  unique int ruby_range: @ruby_range ref,
+  unique int begin: @ruby_range_begin_type ref
+);
+
+@ruby_range_end_type = @ruby_underscore_arg | @ruby_underscore_pattern_primitive
+
+ruby_range_end(
+  unique int ruby_range: @ruby_range ref,
+  unique int end: @ruby_range_end_type ref
+);
+
+case @ruby_range.operator of
+  0 = @ruby_range_dotdot
+| 1 = @ruby_range_dotdotdot
+;
+
+
+ruby_range_def(
+  unique int id: @ruby_range,
+  int operator: int ref
+);
+
+@ruby_rational_child_type = @ruby_token_float | @ruby_token_integer
+
+ruby_rational_def(
+  unique int id: @ruby_rational,
+  int child: @ruby_rational_child_type ref
+);
+
+ruby_redo_child(
+  unique int ruby_redo: @ruby_redo ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_redo_def(
+  unique int id: @ruby_redo
+);
+
+@ruby_regex_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_regex, index]
+ruby_regex_child(
+  int ruby_regex: @ruby_regex ref,
+  int index: int ref,
+  unique int child: @ruby_regex_child_type ref
+);
+
+ruby_regex_def(
+  unique int id: @ruby_regex
+);
+
+ruby_rescue_body(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int body: @ruby_then ref
+);
+
+ruby_rescue_exceptions(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int exceptions: @ruby_exceptions ref
+);
+
+ruby_rescue_variable(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int variable: @ruby_exception_variable ref
+);
+
+ruby_rescue_def(
+  unique int id: @ruby_rescue
+);
+
+@ruby_rescue_modifier_body_type = @ruby_underscore_arg | @ruby_underscore_statement
+
+ruby_rescue_modifier_def(
+  unique int id: @ruby_rescue_modifier,
+  int body: @ruby_rescue_modifier_body_type ref,
+  int handler: @ruby_underscore_expression ref
+);
+
+ruby_rest_assignment_child(
+  unique int ruby_rest_assignment: @ruby_rest_assignment ref,
+  unique int child: @ruby_underscore_lhs ref
+);
+
+ruby_rest_assignment_def(
+  unique int id: @ruby_rest_assignment
+);
+
+ruby_retry_child(
+  unique int ruby_retry: @ruby_retry ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_retry_def(
+  unique int id: @ruby_retry
+);
+
+ruby_return_child(
+  unique int ruby_return: @ruby_return ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_return_def(
+  unique int id: @ruby_return
+);
+
+@ruby_right_assignment_list_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+#keyset[ruby_right_assignment_list, index]
+ruby_right_assignment_list_child(
+  int ruby_right_assignment_list: @ruby_right_assignment_list ref,
+  int index: int ref,
+  unique int child: @ruby_right_assignment_list_child_type ref
+);
+
+ruby_right_assignment_list_def(
+  unique int id: @ruby_right_assignment_list
+);
+
+@ruby_scope_resolution_scope_type = @ruby_underscore_pattern_constant | @ruby_underscore_primary
+
+ruby_scope_resolution_scope(
+  unique int ruby_scope_resolution: @ruby_scope_resolution ref,
+  unique int scope: @ruby_scope_resolution_scope_type ref
+);
+
+ruby_scope_resolution_def(
+  unique int id: @ruby_scope_resolution,
+  int name: @ruby_token_constant ref
+);
+
+ruby_setter_def(
+  unique int id: @ruby_setter,
+  int name: @ruby_token_identifier ref
+);
+
+ruby_singleton_class_body(
+  unique int ruby_singleton_class: @ruby_singleton_class ref,
+  unique int body: @ruby_body_statement ref
+);
+
+ruby_singleton_class_def(
+  unique int id: @ruby_singleton_class,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_singleton_method_body_type = @ruby_body_statement | @ruby_rescue_modifier | @ruby_underscore_arg
+
+ruby_singleton_method_body(
+  unique int ruby_singleton_method: @ruby_singleton_method ref,
+  unique int body: @ruby_singleton_method_body_type ref
+);
+
+@ruby_singleton_method_object_type = @ruby_underscore_arg | @ruby_underscore_variable
+
+ruby_singleton_method_parameters(
+  unique int ruby_singleton_method: @ruby_singleton_method ref,
+  unique int parameters: @ruby_method_parameters ref
+);
+
+ruby_singleton_method_def(
+  unique int id: @ruby_singleton_method,
+  int name: @ruby_underscore_method_name ref,
+  int object: @ruby_singleton_method_object_type ref
+);
+
+ruby_splat_argument_child(
+  unique int ruby_splat_argument: @ruby_splat_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_splat_argument_def(
+  unique int id: @ruby_splat_argument
+);
+
+ruby_splat_parameter_name(
+  unique int ruby_splat_parameter: @ruby_splat_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_splat_parameter_def(
+  unique int id: @ruby_splat_parameter
+);
+
+@ruby_string_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_string__, index]
+ruby_string_child(
+  int ruby_string__: @ruby_string__ ref,
+  int index: int ref,
+  unique int child: @ruby_string_child_type ref
+);
+
+ruby_string_def(
+  unique int id: @ruby_string__
+);
+
+#keyset[ruby_string_array, index]
+ruby_string_array_child(
+  int ruby_string_array: @ruby_string_array ref,
+  int index: int ref,
+  unique int child: @ruby_bare_string ref
+);
+
+ruby_string_array_def(
+  unique int id: @ruby_string_array
+);
+
+@ruby_subshell_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_subshell, index]
+ruby_subshell_child(
+  int ruby_subshell: @ruby_subshell ref,
+  int index: int ref,
+  unique int child: @ruby_subshell_child_type ref
+);
+
+ruby_subshell_def(
+  unique int id: @ruby_subshell
+);
+
+ruby_superclass_def(
+  unique int id: @ruby_superclass,
+  int child: @ruby_underscore_expression ref
+);
+
+#keyset[ruby_symbol_array, index]
+ruby_symbol_array_child(
+  int ruby_symbol_array: @ruby_symbol_array ref,
+  int index: int ref,
+  unique int child: @ruby_bare_symbol ref
+);
+
+ruby_symbol_array_def(
+  unique int id: @ruby_symbol_array
+);
+
+ruby_test_pattern_def(
+  unique int id: @ruby_test_pattern,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_then_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_then, index]
+ruby_then_child(
+  int ruby_then: @ruby_then ref,
+  int index: int ref,
+  unique int child: @ruby_then_child_type ref
+);
+
+ruby_then_def(
+  unique int id: @ruby_then
+);
+
+@ruby_unary_operand_type = @ruby_parenthesized_statements | @ruby_underscore_expression | @ruby_underscore_simple_numeric
+
+case @ruby_unary.operator of
+  0 = @ruby_unary_bang
+| 1 = @ruby_unary_plus
+| 2 = @ruby_unary_minus
+| 3 = @ruby_unary_definedquestion
+| 4 = @ruby_unary_not
+| 5 = @ruby_unary_tilde
+;
+
+
+ruby_unary_def(
+  unique int id: @ruby_unary,
+  int operand: @ruby_unary_operand_type ref,
+  int operator: int ref
+);
+
+#keyset[ruby_undef, index]
+ruby_undef_child(
+  int ruby_undef: @ruby_undef ref,
+  int index: int ref,
+  unique int child: @ruby_underscore_method_name ref
+);
+
+ruby_undef_def(
+  unique int id: @ruby_undef
+);
+
+@ruby_unless_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_unless_alternative(
+  unique int ruby_unless: @ruby_unless ref,
+  unique int alternative: @ruby_unless_alternative_type ref
+);
+
+ruby_unless_consequence(
+  unique int ruby_unless: @ruby_unless ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_unless_def(
+  unique int id: @ruby_unless,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_unless_guard_def(
+  unique int id: @ruby_unless_guard,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_unless_modifier_def(
+  unique int id: @ruby_unless_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_until_def(
+  unique int id: @ruby_until,
+  int body: @ruby_do ref,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_until_modifier_def(
+  unique int id: @ruby_until_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+@ruby_variable_reference_pattern_name_type = @ruby_token_identifier | @ruby_underscore_nonlocal_variable
+
+ruby_variable_reference_pattern_def(
+  unique int id: @ruby_variable_reference_pattern,
+  int name: @ruby_variable_reference_pattern_name_type ref
+);
+
+ruby_when_body(
+  unique int ruby_when: @ruby_when ref,
+  unique int body: @ruby_then ref
+);
+
+#keyset[ruby_when, index]
+ruby_when_pattern(
+  int ruby_when: @ruby_when ref,
+  int index: int ref,
+  unique int pattern: @ruby_pattern ref
+);
+
+ruby_when_def(
+  unique int id: @ruby_when
+);
+
+ruby_while_def(
+  unique int id: @ruby_while,
+  int body: @ruby_do ref,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_while_modifier_def(
+  unique int id: @ruby_while_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_yield_child(
+  unique int ruby_yield: @ruby_yield ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_yield_def(
+  unique int id: @ruby_yield
+);
+
+ruby_tokeninfo(
+  unique int id: @ruby_token,
+  int kind: int ref,
+  string value: string ref
+);
+
+case @ruby_token.kind of
+  0 = @ruby_reserved_word
+| 1 = @ruby_token_character
+| 2 = @ruby_token_class_variable
+| 3 = @ruby_token_comment
+| 4 = @ruby_token_constant
+| 5 = @ruby_token_empty_statement
+| 6 = @ruby_token_encoding
+| 7 = @ruby_token_escape_sequence
+| 8 = @ruby_token_false
+| 9 = @ruby_token_file
+| 10 = @ruby_token_float
+| 11 = @ruby_token_forward_argument
+| 12 = @ruby_token_forward_parameter
+| 13 = @ruby_token_global_variable
+| 14 = @ruby_token_hash_key_symbol
+| 15 = @ruby_token_hash_splat_nil
+| 16 = @ruby_token_heredoc_beginning
+| 17 = @ruby_token_heredoc_content
+| 18 = @ruby_token_heredoc_end
+| 19 = @ruby_token_identifier
+| 20 = @ruby_token_instance_variable
+| 21 = @ruby_token_integer
+| 22 = @ruby_token_line
+| 23 = @ruby_token_nil
+| 24 = @ruby_token_operator
+| 25 = @ruby_token_self
+| 26 = @ruby_token_simple_symbol
+| 27 = @ruby_token_string_content
+| 28 = @ruby_token_super
+| 29 = @ruby_token_true
+| 30 = @ruby_token_uninterpreted
+;
+
+
+@ruby_ast_node = @ruby_alias | @ruby_alternative_pattern | @ruby_argument_list | @ruby_array | @ruby_array_pattern | @ruby_as_pattern | @ruby_assignment | @ruby_bare_string | @ruby_bare_symbol | @ruby_begin | @ruby_begin_block | @ruby_binary | @ruby_block | @ruby_block_argument | @ruby_block_body | @ruby_block_parameter | @ruby_block_parameters | @ruby_body_statement | @ruby_break | @ruby_call | @ruby_case__ | @ruby_case_match | @ruby_chained_string | @ruby_class | @ruby_complex | @ruby_conditional | @ruby_delimited_symbol | @ruby_destructured_left_assignment | @ruby_destructured_parameter | @ruby_do | @ruby_do_block | @ruby_element_reference | @ruby_else | @ruby_elsif | @ruby_end_block | @ruby_ensure | @ruby_exception_variable | @ruby_exceptions | @ruby_expression_reference_pattern | @ruby_find_pattern | @ruby_for | @ruby_hash | @ruby_hash_pattern | @ruby_hash_splat_argument | @ruby_hash_splat_parameter | @ruby_heredoc_body | @ruby_if | @ruby_if_guard | @ruby_if_modifier | @ruby_in | @ruby_in_clause | @ruby_interpolation | @ruby_keyword_parameter | @ruby_keyword_pattern | @ruby_lambda | @ruby_lambda_parameters | @ruby_left_assignment_list | @ruby_match_pattern | @ruby_method | @ruby_method_parameters | @ruby_module | @ruby_next | @ruby_operator_assignment | @ruby_optional_parameter | @ruby_pair | @ruby_parenthesized_pattern | @ruby_parenthesized_statements | @ruby_pattern | @ruby_program | @ruby_range | @ruby_rational | @ruby_redo | @ruby_regex | @ruby_rescue | @ruby_rescue_modifier | @ruby_rest_assignment | @ruby_retry | @ruby_return | @ruby_right_assignment_list | @ruby_scope_resolution | @ruby_setter | @ruby_singleton_class | @ruby_singleton_method | @ruby_splat_argument | @ruby_splat_parameter | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_superclass | @ruby_symbol_array | @ruby_test_pattern | @ruby_then | @ruby_token | @ruby_unary | @ruby_undef | @ruby_unless | @ruby_unless_guard | @ruby_unless_modifier | @ruby_until | @ruby_until_modifier | @ruby_variable_reference_pattern | @ruby_when | @ruby_while | @ruby_while_modifier | @ruby_yield
+
+ruby_ast_node_location(
+  unique int node: @ruby_ast_node ref,
+  int loc: @location_default ref
+);
+
+#keyset[parent, parent_index]
+ruby_ast_node_parent(
+  unique int node: @ruby_ast_node ref,
+  int parent: @ruby_ast_node ref,
+  int parent_index: int ref
+);
+
+/*- Erb dbscheme -*/
+erb_comment_directive_child(
+  unique int erb_comment_directive: @erb_comment_directive ref,
+  unique int child: @erb_token_comment ref
+);
+
+erb_comment_directive_def(
+  unique int id: @erb_comment_directive
+);
+
+erb_directive_child(
+  unique int erb_directive: @erb_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_directive_def(
+  unique int id: @erb_directive
+);
+
+erb_graphql_directive_child(
+  unique int erb_graphql_directive: @erb_graphql_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_graphql_directive_def(
+  unique int id: @erb_graphql_directive
+);
+
+erb_output_directive_child(
+  unique int erb_output_directive: @erb_output_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_output_directive_def(
+  unique int id: @erb_output_directive
+);
+
+@erb_template_child_type = @erb_comment_directive | @erb_directive | @erb_graphql_directive | @erb_output_directive | @erb_token_content
+
+#keyset[erb_template, index]
+erb_template_child(
+  int erb_template: @erb_template ref,
+  int index: int ref,
+  unique int child: @erb_template_child_type ref
+);
+
+erb_template_def(
+  unique int id: @erb_template
+);
+
+erb_tokeninfo(
+  unique int id: @erb_token,
+  int kind: int ref,
+  string value: string ref
+);
+
+case @erb_token.kind of
+  0 = @erb_reserved_word
+| 1 = @erb_token_code
+| 2 = @erb_token_comment
+| 3 = @erb_token_content
+;
+
+
+@erb_ast_node = @erb_comment_directive | @erb_directive | @erb_graphql_directive | @erb_output_directive | @erb_template | @erb_token
+
+erb_ast_node_location(
+  unique int node: @erb_ast_node ref,
+  int loc: @location_default ref
+);
+
+#keyset[parent, parent_index]
+erb_ast_node_parent(
+  unique int node: @erb_ast_node ref,
+  int parent: @erb_ast_node ref,
+  int parent_index: int ref
+);
+
diff --git a/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/semmlecode.dbscheme b/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/semmlecode.dbscheme
new file mode 100644
index 000000000000..eae6926f5000
--- /dev/null
+++ b/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/semmlecode.dbscheme
@@ -0,0 +1,1536 @@
+// CodeQL database schema for Ruby
+// Automatically generated from the tree-sitter grammar; do not edit
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Empty location -*/
+
+empty_location(
+  int location: @location_default ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- Diagnostic messages: severity -*/
+
+case @diagnostic.severity of
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
+;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Database metadata -*/
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- Ruby dbscheme -*/
+@ruby_underscore_arg = @ruby_assignment | @ruby_binary | @ruby_conditional | @ruby_operator_assignment | @ruby_range | @ruby_unary | @ruby_underscore_primary
+
+@ruby_underscore_call_operator = @ruby_reserved_word
+
+@ruby_underscore_expression = @ruby_assignment | @ruby_binary | @ruby_break | @ruby_call | @ruby_match_pattern | @ruby_next | @ruby_operator_assignment | @ruby_return | @ruby_test_pattern | @ruby_unary | @ruby_underscore_arg | @ruby_yield
+
+@ruby_underscore_lhs = @ruby_call | @ruby_element_reference | @ruby_scope_resolution | @ruby_token_false | @ruby_token_nil | @ruby_token_true | @ruby_underscore_variable
+
+@ruby_underscore_method_name = @ruby_delimited_symbol | @ruby_setter | @ruby_token_constant | @ruby_token_identifier | @ruby_token_operator | @ruby_token_simple_symbol | @ruby_underscore_nonlocal_variable
+
+@ruby_underscore_nonlocal_variable = @ruby_token_class_variable | @ruby_token_global_variable | @ruby_token_instance_variable
+
+@ruby_underscore_pattern_constant = @ruby_scope_resolution | @ruby_token_constant
+
+@ruby_underscore_pattern_expr = @ruby_alternative_pattern | @ruby_as_pattern | @ruby_underscore_pattern_expr_basic
+
+@ruby_underscore_pattern_expr_basic = @ruby_array_pattern | @ruby_expression_reference_pattern | @ruby_find_pattern | @ruby_hash_pattern | @ruby_parenthesized_pattern | @ruby_range | @ruby_token_identifier | @ruby_underscore_pattern_constant | @ruby_underscore_pattern_primitive | @ruby_variable_reference_pattern
+
+@ruby_underscore_pattern_primitive = @ruby_delimited_symbol | @ruby_lambda | @ruby_regex | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_symbol_array | @ruby_token_encoding | @ruby_token_false | @ruby_token_file | @ruby_token_heredoc_beginning | @ruby_token_line | @ruby_token_nil | @ruby_token_self | @ruby_token_simple_symbol | @ruby_token_true | @ruby_unary | @ruby_underscore_simple_numeric
+
+@ruby_underscore_pattern_top_expr_body = @ruby_array_pattern | @ruby_find_pattern | @ruby_hash_pattern | @ruby_underscore_pattern_expr
+
+@ruby_underscore_primary = @ruby_array | @ruby_begin | @ruby_break | @ruby_call | @ruby_case__ | @ruby_case_match | @ruby_chained_string | @ruby_class | @ruby_delimited_symbol | @ruby_for | @ruby_hash | @ruby_if | @ruby_lambda | @ruby_method | @ruby_module | @ruby_next | @ruby_parenthesized_statements | @ruby_redo | @ruby_regex | @ruby_retry | @ruby_return | @ruby_singleton_class | @ruby_singleton_method | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_symbol_array | @ruby_token_character | @ruby_token_heredoc_beginning | @ruby_token_simple_symbol | @ruby_unary | @ruby_underscore_lhs | @ruby_underscore_simple_numeric | @ruby_unless | @ruby_until | @ruby_while | @ruby_yield
+
+@ruby_underscore_simple_numeric = @ruby_complex | @ruby_rational | @ruby_token_float | @ruby_token_integer
+
+@ruby_underscore_statement = @ruby_alias | @ruby_begin_block | @ruby_end_block | @ruby_if_modifier | @ruby_rescue_modifier | @ruby_undef | @ruby_underscore_expression | @ruby_unless_modifier | @ruby_until_modifier | @ruby_while_modifier
+
+@ruby_underscore_variable = @ruby_token_constant | @ruby_token_identifier | @ruby_token_self | @ruby_token_super | @ruby_underscore_nonlocal_variable
+
+ruby_alias_def(
+  unique int id: @ruby_alias,
+  int alias: @ruby_underscore_method_name ref,
+  int name: @ruby_underscore_method_name ref
+);
+
+#keyset[ruby_alternative_pattern, index]
+ruby_alternative_pattern_alternatives(
+  int ruby_alternative_pattern: @ruby_alternative_pattern ref,
+  int index: int ref,
+  unique int alternatives: @ruby_underscore_pattern_expr_basic ref
+);
+
+ruby_alternative_pattern_def(
+  unique int id: @ruby_alternative_pattern
+);
+
+@ruby_argument_list_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_argument_list, index]
+ruby_argument_list_child(
+  int ruby_argument_list: @ruby_argument_list ref,
+  int index: int ref,
+  unique int child: @ruby_argument_list_child_type ref
+);
+
+ruby_argument_list_def(
+  unique int id: @ruby_argument_list
+);
+
+@ruby_array_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_array, index]
+ruby_array_child(
+  int ruby_array: @ruby_array ref,
+  int index: int ref,
+  unique int child: @ruby_array_child_type ref
+);
+
+ruby_array_def(
+  unique int id: @ruby_array
+);
+
+ruby_array_pattern_class(
+  unique int ruby_array_pattern: @ruby_array_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_array_pattern_child_type = @ruby_splat_parameter | @ruby_underscore_pattern_expr
+
+#keyset[ruby_array_pattern, index]
+ruby_array_pattern_child(
+  int ruby_array_pattern: @ruby_array_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_array_pattern_child_type ref
+);
+
+ruby_array_pattern_def(
+  unique int id: @ruby_array_pattern
+);
+
+ruby_as_pattern_def(
+  unique int id: @ruby_as_pattern,
+  int name: @ruby_token_identifier ref,
+  int value: @ruby_underscore_pattern_expr ref
+);
+
+@ruby_assignment_left_type = @ruby_left_assignment_list | @ruby_underscore_lhs
+
+@ruby_assignment_right_type = @ruby_rescue_modifier | @ruby_right_assignment_list | @ruby_splat_argument | @ruby_underscore_expression
+
+ruby_assignment_def(
+  unique int id: @ruby_assignment,
+  int left: @ruby_assignment_left_type ref,
+  int right: @ruby_assignment_right_type ref
+);
+
+@ruby_bare_string_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_bare_string, index]
+ruby_bare_string_child(
+  int ruby_bare_string: @ruby_bare_string ref,
+  int index: int ref,
+  unique int child: @ruby_bare_string_child_type ref
+);
+
+ruby_bare_string_def(
+  unique int id: @ruby_bare_string
+);
+
+@ruby_bare_symbol_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_bare_symbol, index]
+ruby_bare_symbol_child(
+  int ruby_bare_symbol: @ruby_bare_symbol ref,
+  int index: int ref,
+  unique int child: @ruby_bare_symbol_child_type ref
+);
+
+ruby_bare_symbol_def(
+  unique int id: @ruby_bare_symbol
+);
+
+@ruby_begin_child_type = @ruby_else | @ruby_ensure | @ruby_rescue | @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_begin, index]
+ruby_begin_child(
+  int ruby_begin: @ruby_begin ref,
+  int index: int ref,
+  unique int child: @ruby_begin_child_type ref
+);
+
+ruby_begin_def(
+  unique int id: @ruby_begin
+);
+
+@ruby_begin_block_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_begin_block, index]
+ruby_begin_block_child(
+  int ruby_begin_block: @ruby_begin_block ref,
+  int index: int ref,
+  unique int child: @ruby_begin_block_child_type ref
+);
+
+ruby_begin_block_def(
+  unique int id: @ruby_begin_block
+);
+
+@ruby_binary_left_type = @ruby_underscore_expression | @ruby_underscore_simple_numeric
+
+case @ruby_binary.operator of
+  0 = @ruby_binary_bangequal
+| 1 = @ruby_binary_bangtilde
+| 2 = @ruby_binary_percent
+| 3 = @ruby_binary_ampersand
+| 4 = @ruby_binary_ampersandampersand
+| 5 = @ruby_binary_star
+| 6 = @ruby_binary_starstar
+| 7 = @ruby_binary_plus
+| 8 = @ruby_binary_minus
+| 9 = @ruby_binary_slash
+| 10 = @ruby_binary_langle
+| 11 = @ruby_binary_langlelangle
+| 12 = @ruby_binary_langleequal
+| 13 = @ruby_binary_langleequalrangle
+| 14 = @ruby_binary_equalequal
+| 15 = @ruby_binary_equalequalequal
+| 16 = @ruby_binary_equaltilde
+| 17 = @ruby_binary_rangle
+| 18 = @ruby_binary_rangleequal
+| 19 = @ruby_binary_ranglerangle
+| 20 = @ruby_binary_caret
+| 21 = @ruby_binary_and
+| 22 = @ruby_binary_or
+| 23 = @ruby_binary_pipe
+| 24 = @ruby_binary_pipepipe
+;
+
+
+ruby_binary_def(
+  unique int id: @ruby_binary,
+  int left: @ruby_binary_left_type ref,
+  int operator: int ref,
+  int right: @ruby_underscore_expression ref
+);
+
+ruby_block_body(
+  unique int ruby_block: @ruby_block ref,
+  unique int body: @ruby_block_body ref
+);
+
+ruby_block_parameters(
+  unique int ruby_block: @ruby_block ref,
+  unique int parameters: @ruby_block_parameters ref
+);
+
+ruby_block_def(
+  unique int id: @ruby_block
+);
+
+ruby_block_argument_child(
+  unique int ruby_block_argument: @ruby_block_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_block_argument_def(
+  unique int id: @ruby_block_argument
+);
+
+@ruby_block_body_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_block_body, index]
+ruby_block_body_child(
+  int ruby_block_body: @ruby_block_body ref,
+  int index: int ref,
+  unique int child: @ruby_block_body_child_type ref
+);
+
+ruby_block_body_def(
+  unique int id: @ruby_block_body
+);
+
+ruby_block_parameter_name(
+  unique int ruby_block_parameter: @ruby_block_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_block_parameter_def(
+  unique int id: @ruby_block_parameter
+);
+
+#keyset[ruby_block_parameters, index]
+ruby_block_parameters_locals(
+  int ruby_block_parameters: @ruby_block_parameters ref,
+  int index: int ref,
+  unique int locals: @ruby_token_identifier ref
+);
+
+@ruby_block_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_block_parameters, index]
+ruby_block_parameters_child(
+  int ruby_block_parameters: @ruby_block_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_block_parameters_child_type ref
+);
+
+ruby_block_parameters_def(
+  unique int id: @ruby_block_parameters
+);
+
+@ruby_body_statement_child_type = @ruby_else | @ruby_ensure | @ruby_rescue | @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_body_statement, index]
+ruby_body_statement_child(
+  int ruby_body_statement: @ruby_body_statement ref,
+  int index: int ref,
+  unique int child: @ruby_body_statement_child_type ref
+);
+
+ruby_body_statement_def(
+  unique int id: @ruby_body_statement
+);
+
+ruby_break_child(
+  unique int ruby_break: @ruby_break ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_break_def(
+  unique int id: @ruby_break
+);
+
+ruby_call_arguments(
+  unique int ruby_call: @ruby_call ref,
+  unique int arguments: @ruby_argument_list ref
+);
+
+@ruby_call_block_type = @ruby_block | @ruby_do_block
+
+ruby_call_block(
+  unique int ruby_call: @ruby_call ref,
+  unique int block: @ruby_call_block_type ref
+);
+
+@ruby_call_method_type = @ruby_token_operator | @ruby_underscore_variable
+
+ruby_call_method(
+  unique int ruby_call: @ruby_call ref,
+  unique int method: @ruby_call_method_type ref
+);
+
+ruby_call_operator(
+  unique int ruby_call: @ruby_call ref,
+  unique int operator: @ruby_underscore_call_operator ref
+);
+
+ruby_call_receiver(
+  unique int ruby_call: @ruby_call ref,
+  unique int receiver: @ruby_underscore_primary ref
+);
+
+ruby_call_def(
+  unique int id: @ruby_call
+);
+
+ruby_case_value(
+  unique int ruby_case__: @ruby_case__ ref,
+  unique int value: @ruby_underscore_statement ref
+);
+
+@ruby_case_child_type = @ruby_else | @ruby_when
+
+#keyset[ruby_case__, index]
+ruby_case_child(
+  int ruby_case__: @ruby_case__ ref,
+  int index: int ref,
+  unique int child: @ruby_case_child_type ref
+);
+
+ruby_case_def(
+  unique int id: @ruby_case__
+);
+
+#keyset[ruby_case_match, index]
+ruby_case_match_clauses(
+  int ruby_case_match: @ruby_case_match ref,
+  int index: int ref,
+  unique int clauses: @ruby_in_clause ref
+);
+
+ruby_case_match_else(
+  unique int ruby_case_match: @ruby_case_match ref,
+  unique int else: @ruby_else ref
+);
+
+ruby_case_match_def(
+  unique int id: @ruby_case_match,
+  int value: @ruby_underscore_statement ref
+);
+
+#keyset[ruby_chained_string, index]
+ruby_chained_string_child(
+  int ruby_chained_string: @ruby_chained_string ref,
+  int index: int ref,
+  unique int child: @ruby_string__ ref
+);
+
+ruby_chained_string_def(
+  unique int id: @ruby_chained_string
+);
+
+ruby_class_body(
+  unique int ruby_class: @ruby_class ref,
+  unique int body: @ruby_body_statement ref
+);
+
+@ruby_class_name_type = @ruby_scope_resolution | @ruby_token_constant
+
+ruby_class_superclass(
+  unique int ruby_class: @ruby_class ref,
+  unique int superclass: @ruby_superclass ref
+);
+
+ruby_class_def(
+  unique int id: @ruby_class,
+  int name: @ruby_class_name_type ref
+);
+
+@ruby_complex_child_type = @ruby_rational | @ruby_token_float | @ruby_token_integer
+
+ruby_complex_def(
+  unique int id: @ruby_complex,
+  int child: @ruby_complex_child_type ref
+);
+
+ruby_conditional_def(
+  unique int id: @ruby_conditional,
+  int alternative: @ruby_underscore_arg ref,
+  int condition: @ruby_underscore_arg ref,
+  int consequence: @ruby_underscore_arg ref
+);
+
+@ruby_delimited_symbol_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_delimited_symbol, index]
+ruby_delimited_symbol_child(
+  int ruby_delimited_symbol: @ruby_delimited_symbol ref,
+  int index: int ref,
+  unique int child: @ruby_delimited_symbol_child_type ref
+);
+
+ruby_delimited_symbol_def(
+  unique int id: @ruby_delimited_symbol
+);
+
+@ruby_destructured_left_assignment_child_type = @ruby_destructured_left_assignment | @ruby_rest_assignment | @ruby_underscore_lhs
+
+#keyset[ruby_destructured_left_assignment, index]
+ruby_destructured_left_assignment_child(
+  int ruby_destructured_left_assignment: @ruby_destructured_left_assignment ref,
+  int index: int ref,
+  unique int child: @ruby_destructured_left_assignment_child_type ref
+);
+
+ruby_destructured_left_assignment_def(
+  unique int id: @ruby_destructured_left_assignment
+);
+
+@ruby_destructured_parameter_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_destructured_parameter, index]
+ruby_destructured_parameter_child(
+  int ruby_destructured_parameter: @ruby_destructured_parameter ref,
+  int index: int ref,
+  unique int child: @ruby_destructured_parameter_child_type ref
+);
+
+ruby_destructured_parameter_def(
+  unique int id: @ruby_destructured_parameter
+);
+
+@ruby_do_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_do, index]
+ruby_do_child(
+  int ruby_do: @ruby_do ref,
+  int index: int ref,
+  unique int child: @ruby_do_child_type ref
+);
+
+ruby_do_def(
+  unique int id: @ruby_do
+);
+
+ruby_do_block_body(
+  unique int ruby_do_block: @ruby_do_block ref,
+  unique int body: @ruby_body_statement ref
+);
+
+ruby_do_block_parameters(
+  unique int ruby_do_block: @ruby_do_block ref,
+  unique int parameters: @ruby_block_parameters ref
+);
+
+ruby_do_block_def(
+  unique int id: @ruby_do_block
+);
+
+@ruby_element_reference_block_type = @ruby_block | @ruby_do_block
+
+ruby_element_reference_block(
+  unique int ruby_element_reference: @ruby_element_reference ref,
+  unique int block: @ruby_element_reference_block_type ref
+);
+
+@ruby_element_reference_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_element_reference, index]
+ruby_element_reference_child(
+  int ruby_element_reference: @ruby_element_reference ref,
+  int index: int ref,
+  unique int child: @ruby_element_reference_child_type ref
+);
+
+ruby_element_reference_def(
+  unique int id: @ruby_element_reference,
+  int object: @ruby_underscore_primary ref
+);
+
+@ruby_else_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_else, index]
+ruby_else_child(
+  int ruby_else: @ruby_else ref,
+  int index: int ref,
+  unique int child: @ruby_else_child_type ref
+);
+
+ruby_else_def(
+  unique int id: @ruby_else
+);
+
+@ruby_elsif_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_elsif_alternative(
+  unique int ruby_elsif: @ruby_elsif ref,
+  unique int alternative: @ruby_elsif_alternative_type ref
+);
+
+ruby_elsif_consequence(
+  unique int ruby_elsif: @ruby_elsif ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_elsif_def(
+  unique int id: @ruby_elsif,
+  int condition: @ruby_underscore_statement ref
+);
+
+@ruby_end_block_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_end_block, index]
+ruby_end_block_child(
+  int ruby_end_block: @ruby_end_block ref,
+  int index: int ref,
+  unique int child: @ruby_end_block_child_type ref
+);
+
+ruby_end_block_def(
+  unique int id: @ruby_end_block
+);
+
+@ruby_ensure_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_ensure, index]
+ruby_ensure_child(
+  int ruby_ensure: @ruby_ensure ref,
+  int index: int ref,
+  unique int child: @ruby_ensure_child_type ref
+);
+
+ruby_ensure_def(
+  unique int id: @ruby_ensure
+);
+
+ruby_exception_variable_def(
+  unique int id: @ruby_exception_variable,
+  int child: @ruby_underscore_lhs ref
+);
+
+@ruby_exceptions_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+#keyset[ruby_exceptions, index]
+ruby_exceptions_child(
+  int ruby_exceptions: @ruby_exceptions ref,
+  int index: int ref,
+  unique int child: @ruby_exceptions_child_type ref
+);
+
+ruby_exceptions_def(
+  unique int id: @ruby_exceptions
+);
+
+ruby_expression_reference_pattern_def(
+  unique int id: @ruby_expression_reference_pattern,
+  int value: @ruby_underscore_expression ref
+);
+
+ruby_find_pattern_class(
+  unique int ruby_find_pattern: @ruby_find_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_find_pattern_child_type = @ruby_splat_parameter | @ruby_underscore_pattern_expr
+
+#keyset[ruby_find_pattern, index]
+ruby_find_pattern_child(
+  int ruby_find_pattern: @ruby_find_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_find_pattern_child_type ref
+);
+
+ruby_find_pattern_def(
+  unique int id: @ruby_find_pattern
+);
+
+@ruby_for_pattern_type = @ruby_left_assignment_list | @ruby_underscore_lhs
+
+ruby_for_def(
+  unique int id: @ruby_for,
+  int body: @ruby_do ref,
+  int pattern: @ruby_for_pattern_type ref,
+  int value: @ruby_in ref
+);
+
+@ruby_hash_child_type = @ruby_hash_splat_argument | @ruby_pair
+
+#keyset[ruby_hash, index]
+ruby_hash_child(
+  int ruby_hash: @ruby_hash ref,
+  int index: int ref,
+  unique int child: @ruby_hash_child_type ref
+);
+
+ruby_hash_def(
+  unique int id: @ruby_hash
+);
+
+ruby_hash_pattern_class(
+  unique int ruby_hash_pattern: @ruby_hash_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_hash_pattern_child_type = @ruby_hash_splat_parameter | @ruby_keyword_pattern | @ruby_token_hash_splat_nil
+
+#keyset[ruby_hash_pattern, index]
+ruby_hash_pattern_child(
+  int ruby_hash_pattern: @ruby_hash_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_hash_pattern_child_type ref
+);
+
+ruby_hash_pattern_def(
+  unique int id: @ruby_hash_pattern
+);
+
+ruby_hash_splat_argument_child(
+  unique int ruby_hash_splat_argument: @ruby_hash_splat_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_hash_splat_argument_def(
+  unique int id: @ruby_hash_splat_argument
+);
+
+ruby_hash_splat_parameter_name(
+  unique int ruby_hash_splat_parameter: @ruby_hash_splat_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_hash_splat_parameter_def(
+  unique int id: @ruby_hash_splat_parameter
+);
+
+@ruby_heredoc_body_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_heredoc_content | @ruby_token_heredoc_end
+
+#keyset[ruby_heredoc_body, index]
+ruby_heredoc_body_child(
+  int ruby_heredoc_body: @ruby_heredoc_body ref,
+  int index: int ref,
+  unique int child: @ruby_heredoc_body_child_type ref
+);
+
+ruby_heredoc_body_def(
+  unique int id: @ruby_heredoc_body
+);
+
+@ruby_if_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_if_alternative(
+  unique int ruby_if: @ruby_if ref,
+  unique int alternative: @ruby_if_alternative_type ref
+);
+
+ruby_if_consequence(
+  unique int ruby_if: @ruby_if ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_if_def(
+  unique int id: @ruby_if,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_if_guard_def(
+  unique int id: @ruby_if_guard,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_if_modifier_def(
+  unique int id: @ruby_if_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_in_def(
+  unique int id: @ruby_in,
+  int child: @ruby_underscore_arg ref
+);
+
+ruby_in_clause_body(
+  unique int ruby_in_clause: @ruby_in_clause ref,
+  unique int body: @ruby_then ref
+);
+
+@ruby_in_clause_guard_type = @ruby_if_guard | @ruby_unless_guard
+
+ruby_in_clause_guard(
+  unique int ruby_in_clause: @ruby_in_clause ref,
+  unique int guard: @ruby_in_clause_guard_type ref
+);
+
+ruby_in_clause_def(
+  unique int id: @ruby_in_clause,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref
+);
+
+@ruby_interpolation_child_type = @ruby_token_empty_statement | @ruby_underscore_nonlocal_variable | @ruby_underscore_statement
+
+#keyset[ruby_interpolation, index]
+ruby_interpolation_child(
+  int ruby_interpolation: @ruby_interpolation ref,
+  int index: int ref,
+  unique int child: @ruby_interpolation_child_type ref
+);
+
+ruby_interpolation_def(
+  unique int id: @ruby_interpolation
+);
+
+ruby_keyword_parameter_value(
+  unique int ruby_keyword_parameter: @ruby_keyword_parameter ref,
+  unique int value: @ruby_underscore_arg ref
+);
+
+ruby_keyword_parameter_def(
+  unique int id: @ruby_keyword_parameter,
+  int name: @ruby_token_identifier ref
+);
+
+@ruby_keyword_pattern_key_type = @ruby_string__ | @ruby_token_hash_key_symbol
+
+ruby_keyword_pattern_value(
+  unique int ruby_keyword_pattern: @ruby_keyword_pattern ref,
+  unique int value: @ruby_underscore_pattern_expr ref
+);
+
+ruby_keyword_pattern_def(
+  unique int id: @ruby_keyword_pattern,
+  int key__: @ruby_keyword_pattern_key_type ref
+);
+
+@ruby_lambda_body_type = @ruby_block | @ruby_do_block
+
+ruby_lambda_parameters(
+  unique int ruby_lambda: @ruby_lambda ref,
+  unique int parameters: @ruby_lambda_parameters ref
+);
+
+ruby_lambda_def(
+  unique int id: @ruby_lambda,
+  int body: @ruby_lambda_body_type ref
+);
+
+@ruby_lambda_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_lambda_parameters, index]
+ruby_lambda_parameters_child(
+  int ruby_lambda_parameters: @ruby_lambda_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_lambda_parameters_child_type ref
+);
+
+ruby_lambda_parameters_def(
+  unique int id: @ruby_lambda_parameters
+);
+
+@ruby_left_assignment_list_child_type = @ruby_destructured_left_assignment | @ruby_rest_assignment | @ruby_underscore_lhs
+
+#keyset[ruby_left_assignment_list, index]
+ruby_left_assignment_list_child(
+  int ruby_left_assignment_list: @ruby_left_assignment_list ref,
+  int index: int ref,
+  unique int child: @ruby_left_assignment_list_child_type ref
+);
+
+ruby_left_assignment_list_def(
+  unique int id: @ruby_left_assignment_list
+);
+
+ruby_match_pattern_def(
+  unique int id: @ruby_match_pattern,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_method_body_type = @ruby_body_statement | @ruby_rescue_modifier | @ruby_underscore_arg
+
+ruby_method_body(
+  unique int ruby_method: @ruby_method ref,
+  unique int body: @ruby_method_body_type ref
+);
+
+ruby_method_parameters(
+  unique int ruby_method: @ruby_method ref,
+  unique int parameters: @ruby_method_parameters ref
+);
+
+ruby_method_def(
+  unique int id: @ruby_method,
+  int name: @ruby_underscore_method_name ref
+);
+
+@ruby_method_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_method_parameters, index]
+ruby_method_parameters_child(
+  int ruby_method_parameters: @ruby_method_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_method_parameters_child_type ref
+);
+
+ruby_method_parameters_def(
+  unique int id: @ruby_method_parameters
+);
+
+ruby_module_body(
+  unique int ruby_module: @ruby_module ref,
+  unique int body: @ruby_body_statement ref
+);
+
+@ruby_module_name_type = @ruby_scope_resolution | @ruby_token_constant
+
+ruby_module_def(
+  unique int id: @ruby_module,
+  int name: @ruby_module_name_type ref
+);
+
+ruby_next_child(
+  unique int ruby_next: @ruby_next ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_next_def(
+  unique int id: @ruby_next
+);
+
+case @ruby_operator_assignment.operator of
+  0 = @ruby_operator_assignment_percentequal
+| 1 = @ruby_operator_assignment_ampersandampersandequal
+| 2 = @ruby_operator_assignment_ampersandequal
+| 3 = @ruby_operator_assignment_starstarequal
+| 4 = @ruby_operator_assignment_starequal
+| 5 = @ruby_operator_assignment_plusequal
+| 6 = @ruby_operator_assignment_minusequal
+| 7 = @ruby_operator_assignment_slashequal
+| 8 = @ruby_operator_assignment_langlelangleequal
+| 9 = @ruby_operator_assignment_ranglerangleequal
+| 10 = @ruby_operator_assignment_caretequal
+| 11 = @ruby_operator_assignment_pipeequal
+| 12 = @ruby_operator_assignment_pipepipeequal
+;
+
+
+@ruby_operator_assignment_right_type = @ruby_rescue_modifier | @ruby_underscore_expression
+
+ruby_operator_assignment_def(
+  unique int id: @ruby_operator_assignment,
+  int left: @ruby_underscore_lhs ref,
+  int operator: int ref,
+  int right: @ruby_operator_assignment_right_type ref
+);
+
+ruby_optional_parameter_def(
+  unique int id: @ruby_optional_parameter,
+  int name: @ruby_token_identifier ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_pair_key_type = @ruby_string__ | @ruby_token_hash_key_symbol | @ruby_underscore_arg
+
+ruby_pair_value(
+  unique int ruby_pair: @ruby_pair ref,
+  unique int value: @ruby_underscore_arg ref
+);
+
+ruby_pair_def(
+  unique int id: @ruby_pair,
+  int key__: @ruby_pair_key_type ref
+);
+
+ruby_parenthesized_pattern_def(
+  unique int id: @ruby_parenthesized_pattern,
+  int child: @ruby_underscore_pattern_expr ref
+);
+
+@ruby_parenthesized_statements_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_parenthesized_statements, index]
+ruby_parenthesized_statements_child(
+  int ruby_parenthesized_statements: @ruby_parenthesized_statements ref,
+  int index: int ref,
+  unique int child: @ruby_parenthesized_statements_child_type ref
+);
+
+ruby_parenthesized_statements_def(
+  unique int id: @ruby_parenthesized_statements
+);
+
+@ruby_pattern_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+ruby_pattern_def(
+  unique int id: @ruby_pattern,
+  int child: @ruby_pattern_child_type ref
+);
+
+@ruby_program_child_type = @ruby_token_empty_statement | @ruby_token_uninterpreted | @ruby_underscore_statement
+
+#keyset[ruby_program, index]
+ruby_program_child(
+  int ruby_program: @ruby_program ref,
+  int index: int ref,
+  unique int child: @ruby_program_child_type ref
+);
+
+ruby_program_def(
+  unique int id: @ruby_program
+);
+
+@ruby_range_begin_type = @ruby_underscore_arg | @ruby_underscore_pattern_primitive
+
+ruby_range_begin(
+  unique int ruby_range: @ruby_range ref,
+  unique int begin: @ruby_range_begin_type ref
+);
+
+@ruby_range_end_type = @ruby_underscore_arg | @ruby_underscore_pattern_primitive
+
+ruby_range_end(
+  unique int ruby_range: @ruby_range ref,
+  unique int end: @ruby_range_end_type ref
+);
+
+case @ruby_range.operator of
+  0 = @ruby_range_dotdot
+| 1 = @ruby_range_dotdotdot
+;
+
+
+ruby_range_def(
+  unique int id: @ruby_range,
+  int operator: int ref
+);
+
+@ruby_rational_child_type = @ruby_token_float | @ruby_token_integer
+
+ruby_rational_def(
+  unique int id: @ruby_rational,
+  int child: @ruby_rational_child_type ref
+);
+
+ruby_redo_child(
+  unique int ruby_redo: @ruby_redo ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_redo_def(
+  unique int id: @ruby_redo
+);
+
+@ruby_regex_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_regex, index]
+ruby_regex_child(
+  int ruby_regex: @ruby_regex ref,
+  int index: int ref,
+  unique int child: @ruby_regex_child_type ref
+);
+
+ruby_regex_def(
+  unique int id: @ruby_regex
+);
+
+ruby_rescue_body(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int body: @ruby_then ref
+);
+
+ruby_rescue_exceptions(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int exceptions: @ruby_exceptions ref
+);
+
+ruby_rescue_variable(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int variable: @ruby_exception_variable ref
+);
+
+ruby_rescue_def(
+  unique int id: @ruby_rescue
+);
+
+@ruby_rescue_modifier_body_type = @ruby_underscore_arg | @ruby_underscore_statement
+
+ruby_rescue_modifier_def(
+  unique int id: @ruby_rescue_modifier,
+  int body: @ruby_rescue_modifier_body_type ref,
+  int handler: @ruby_underscore_expression ref
+);
+
+ruby_rest_assignment_child(
+  unique int ruby_rest_assignment: @ruby_rest_assignment ref,
+  unique int child: @ruby_underscore_lhs ref
+);
+
+ruby_rest_assignment_def(
+  unique int id: @ruby_rest_assignment
+);
+
+ruby_retry_child(
+  unique int ruby_retry: @ruby_retry ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_retry_def(
+  unique int id: @ruby_retry
+);
+
+ruby_return_child(
+  unique int ruby_return: @ruby_return ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_return_def(
+  unique int id: @ruby_return
+);
+
+@ruby_right_assignment_list_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+#keyset[ruby_right_assignment_list, index]
+ruby_right_assignment_list_child(
+  int ruby_right_assignment_list: @ruby_right_assignment_list ref,
+  int index: int ref,
+  unique int child: @ruby_right_assignment_list_child_type ref
+);
+
+ruby_right_assignment_list_def(
+  unique int id: @ruby_right_assignment_list
+);
+
+@ruby_scope_resolution_scope_type = @ruby_underscore_pattern_constant | @ruby_underscore_primary
+
+ruby_scope_resolution_scope(
+  unique int ruby_scope_resolution: @ruby_scope_resolution ref,
+  unique int scope: @ruby_scope_resolution_scope_type ref
+);
+
+ruby_scope_resolution_def(
+  unique int id: @ruby_scope_resolution,
+  int name: @ruby_token_constant ref
+);
+
+ruby_setter_def(
+  unique int id: @ruby_setter,
+  int name: @ruby_token_identifier ref
+);
+
+ruby_singleton_class_body(
+  unique int ruby_singleton_class: @ruby_singleton_class ref,
+  unique int body: @ruby_body_statement ref
+);
+
+ruby_singleton_class_def(
+  unique int id: @ruby_singleton_class,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_singleton_method_body_type = @ruby_body_statement | @ruby_rescue_modifier | @ruby_underscore_arg
+
+ruby_singleton_method_body(
+  unique int ruby_singleton_method: @ruby_singleton_method ref,
+  unique int body: @ruby_singleton_method_body_type ref
+);
+
+@ruby_singleton_method_object_type = @ruby_underscore_arg | @ruby_underscore_variable
+
+ruby_singleton_method_parameters(
+  unique int ruby_singleton_method: @ruby_singleton_method ref,
+  unique int parameters: @ruby_method_parameters ref
+);
+
+ruby_singleton_method_def(
+  unique int id: @ruby_singleton_method,
+  int name: @ruby_underscore_method_name ref,
+  int object: @ruby_singleton_method_object_type ref
+);
+
+ruby_splat_argument_child(
+  unique int ruby_splat_argument: @ruby_splat_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_splat_argument_def(
+  unique int id: @ruby_splat_argument
+);
+
+ruby_splat_parameter_name(
+  unique int ruby_splat_parameter: @ruby_splat_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_splat_parameter_def(
+  unique int id: @ruby_splat_parameter
+);
+
+@ruby_string_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_string__, index]
+ruby_string_child(
+  int ruby_string__: @ruby_string__ ref,
+  int index: int ref,
+  unique int child: @ruby_string_child_type ref
+);
+
+ruby_string_def(
+  unique int id: @ruby_string__
+);
+
+#keyset[ruby_string_array, index]
+ruby_string_array_child(
+  int ruby_string_array: @ruby_string_array ref,
+  int index: int ref,
+  unique int child: @ruby_bare_string ref
+);
+
+ruby_string_array_def(
+  unique int id: @ruby_string_array
+);
+
+@ruby_subshell_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_subshell, index]
+ruby_subshell_child(
+  int ruby_subshell: @ruby_subshell ref,
+  int index: int ref,
+  unique int child: @ruby_subshell_child_type ref
+);
+
+ruby_subshell_def(
+  unique int id: @ruby_subshell
+);
+
+ruby_superclass_def(
+  unique int id: @ruby_superclass,
+  int child: @ruby_underscore_expression ref
+);
+
+#keyset[ruby_symbol_array, index]
+ruby_symbol_array_child(
+  int ruby_symbol_array: @ruby_symbol_array ref,
+  int index: int ref,
+  unique int child: @ruby_bare_symbol ref
+);
+
+ruby_symbol_array_def(
+  unique int id: @ruby_symbol_array
+);
+
+ruby_test_pattern_def(
+  unique int id: @ruby_test_pattern,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_then_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_then, index]
+ruby_then_child(
+  int ruby_then: @ruby_then ref,
+  int index: int ref,
+  unique int child: @ruby_then_child_type ref
+);
+
+ruby_then_def(
+  unique int id: @ruby_then
+);
+
+@ruby_unary_operand_type = @ruby_parenthesized_statements | @ruby_underscore_expression | @ruby_underscore_simple_numeric
+
+case @ruby_unary.operator of
+  0 = @ruby_unary_bang
+| 1 = @ruby_unary_plus
+| 2 = @ruby_unary_minus
+| 3 = @ruby_unary_definedquestion
+| 4 = @ruby_unary_not
+| 5 = @ruby_unary_tilde
+;
+
+
+ruby_unary_def(
+  unique int id: @ruby_unary,
+  int operand: @ruby_unary_operand_type ref,
+  int operator: int ref
+);
+
+#keyset[ruby_undef, index]
+ruby_undef_child(
+  int ruby_undef: @ruby_undef ref,
+  int index: int ref,
+  unique int child: @ruby_underscore_method_name ref
+);
+
+ruby_undef_def(
+  unique int id: @ruby_undef
+);
+
+@ruby_unless_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_unless_alternative(
+  unique int ruby_unless: @ruby_unless ref,
+  unique int alternative: @ruby_unless_alternative_type ref
+);
+
+ruby_unless_consequence(
+  unique int ruby_unless: @ruby_unless ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_unless_def(
+  unique int id: @ruby_unless,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_unless_guard_def(
+  unique int id: @ruby_unless_guard,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_unless_modifier_def(
+  unique int id: @ruby_unless_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_until_def(
+  unique int id: @ruby_until,
+  int body: @ruby_do ref,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_until_modifier_def(
+  unique int id: @ruby_until_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+@ruby_variable_reference_pattern_name_type = @ruby_token_identifier | @ruby_underscore_nonlocal_variable
+
+ruby_variable_reference_pattern_def(
+  unique int id: @ruby_variable_reference_pattern,
+  int name: @ruby_variable_reference_pattern_name_type ref
+);
+
+ruby_when_body(
+  unique int ruby_when: @ruby_when ref,
+  unique int body: @ruby_then ref
+);
+
+#keyset[ruby_when, index]
+ruby_when_pattern(
+  int ruby_when: @ruby_when ref,
+  int index: int ref,
+  unique int pattern: @ruby_pattern ref
+);
+
+ruby_when_def(
+  unique int id: @ruby_when
+);
+
+ruby_while_def(
+  unique int id: @ruby_while,
+  int body: @ruby_do ref,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_while_modifier_def(
+  unique int id: @ruby_while_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_yield_child(
+  unique int ruby_yield: @ruby_yield ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_yield_def(
+  unique int id: @ruby_yield
+);
+
+ruby_tokeninfo(
+  unique int id: @ruby_token,
+  int kind: int ref,
+  string value: string ref
+);
+
+case @ruby_token.kind of
+  0 = @ruby_reserved_word
+| 1 = @ruby_token_character
+| 2 = @ruby_token_class_variable
+| 3 = @ruby_token_comment
+| 4 = @ruby_token_constant
+| 5 = @ruby_token_empty_statement
+| 6 = @ruby_token_encoding
+| 7 = @ruby_token_escape_sequence
+| 8 = @ruby_token_false
+| 9 = @ruby_token_file
+| 10 = @ruby_token_float
+| 11 = @ruby_token_forward_argument
+| 12 = @ruby_token_forward_parameter
+| 13 = @ruby_token_global_variable
+| 14 = @ruby_token_hash_key_symbol
+| 15 = @ruby_token_hash_splat_nil
+| 16 = @ruby_token_heredoc_beginning
+| 17 = @ruby_token_heredoc_content
+| 18 = @ruby_token_heredoc_end
+| 19 = @ruby_token_identifier
+| 20 = @ruby_token_instance_variable
+| 21 = @ruby_token_integer
+| 22 = @ruby_token_line
+| 23 = @ruby_token_nil
+| 24 = @ruby_token_operator
+| 25 = @ruby_token_self
+| 26 = @ruby_token_simple_symbol
+| 27 = @ruby_token_string_content
+| 28 = @ruby_token_super
+| 29 = @ruby_token_true
+| 30 = @ruby_token_uninterpreted
+;
+
+
+@ruby_ast_node = @ruby_alias | @ruby_alternative_pattern | @ruby_argument_list | @ruby_array | @ruby_array_pattern | @ruby_as_pattern | @ruby_assignment | @ruby_bare_string | @ruby_bare_symbol | @ruby_begin | @ruby_begin_block | @ruby_binary | @ruby_block | @ruby_block_argument | @ruby_block_body | @ruby_block_parameter | @ruby_block_parameters | @ruby_body_statement | @ruby_break | @ruby_call | @ruby_case__ | @ruby_case_match | @ruby_chained_string | @ruby_class | @ruby_complex | @ruby_conditional | @ruby_delimited_symbol | @ruby_destructured_left_assignment | @ruby_destructured_parameter | @ruby_do | @ruby_do_block | @ruby_element_reference | @ruby_else | @ruby_elsif | @ruby_end_block | @ruby_ensure | @ruby_exception_variable | @ruby_exceptions | @ruby_expression_reference_pattern | @ruby_find_pattern | @ruby_for | @ruby_hash | @ruby_hash_pattern | @ruby_hash_splat_argument | @ruby_hash_splat_parameter | @ruby_heredoc_body | @ruby_if | @ruby_if_guard | @ruby_if_modifier | @ruby_in | @ruby_in_clause | @ruby_interpolation | @ruby_keyword_parameter | @ruby_keyword_pattern | @ruby_lambda | @ruby_lambda_parameters | @ruby_left_assignment_list | @ruby_match_pattern | @ruby_method | @ruby_method_parameters | @ruby_module | @ruby_next | @ruby_operator_assignment | @ruby_optional_parameter | @ruby_pair | @ruby_parenthesized_pattern | @ruby_parenthesized_statements | @ruby_pattern | @ruby_program | @ruby_range | @ruby_rational | @ruby_redo | @ruby_regex | @ruby_rescue | @ruby_rescue_modifier | @ruby_rest_assignment | @ruby_retry | @ruby_return | @ruby_right_assignment_list | @ruby_scope_resolution | @ruby_setter | @ruby_singleton_class | @ruby_singleton_method | @ruby_splat_argument | @ruby_splat_parameter | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_superclass | @ruby_symbol_array | @ruby_test_pattern | @ruby_then | @ruby_token | @ruby_unary | @ruby_undef | @ruby_unless | @ruby_unless_guard | @ruby_unless_modifier | @ruby_until | @ruby_until_modifier | @ruby_variable_reference_pattern | @ruby_when | @ruby_while | @ruby_while_modifier | @ruby_yield
+
+ruby_ast_node_location(
+  unique int node: @ruby_ast_node ref,
+  int loc: @location_default ref
+);
+
+#keyset[parent, parent_index]
+ruby_ast_node_parent(
+  unique int node: @ruby_ast_node ref,
+  int parent: @ruby_ast_node ref,
+  int parent_index: int ref
+);
+
+/*- Erb dbscheme -*/
+erb_comment_directive_child(
+  unique int erb_comment_directive: @erb_comment_directive ref,
+  unique int child: @erb_token_comment ref
+);
+
+erb_comment_directive_def(
+  unique int id: @erb_comment_directive
+);
+
+erb_directive_child(
+  unique int erb_directive: @erb_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_directive_def(
+  unique int id: @erb_directive
+);
+
+erb_graphql_directive_child(
+  unique int erb_graphql_directive: @erb_graphql_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_graphql_directive_def(
+  unique int id: @erb_graphql_directive
+);
+
+erb_output_directive_child(
+  unique int erb_output_directive: @erb_output_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_output_directive_def(
+  unique int id: @erb_output_directive
+);
+
+@erb_template_child_type = @erb_comment_directive | @erb_directive | @erb_graphql_directive | @erb_output_directive | @erb_token_content
+
+#keyset[erb_template, index]
+erb_template_child(
+  int erb_template: @erb_template ref,
+  int index: int ref,
+  unique int child: @erb_template_child_type ref
+);
+
+erb_template_def(
+  unique int id: @erb_template
+);
+
+erb_tokeninfo(
+  unique int id: @erb_token,
+  int kind: int ref,
+  string value: string ref
+);
+
+case @erb_token.kind of
+  0 = @erb_reserved_word
+| 1 = @erb_token_code
+| 2 = @erb_token_comment
+| 3 = @erb_token_content
+;
+
+
+@erb_ast_node = @erb_comment_directive | @erb_directive | @erb_graphql_directive | @erb_output_directive | @erb_template | @erb_token
+
+erb_ast_node_location(
+  unique int node: @erb_ast_node ref,
+  int loc: @location_default ref
+);
+
+#keyset[parent, parent_index]
+erb_ast_node_parent(
+  unique int node: @erb_ast_node ref,
+  int parent: @erb_ast_node ref,
+  int parent_index: int ref
+);
+
diff --git a/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/upgrade.properties b/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/ruby/downgrades/29b7b6fc1982422368cb0a4644fd0c81f993c618/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/ruby/extractor/src/generator.rs b/ruby/extractor/src/generator.rs
index 00d878243aee..de1d0dbfd7e3 100644
--- a/ruby/extractor/src/generator.rs
+++ b/ruby/extractor/src/generator.rs
@@ -28,5 +28,10 @@ pub fn run(options: Options) -> std::io::Result<()> {
         },
     ];
 
-    generate(languages, options.dbscheme, options.library)
+    generate(
+        languages,
+        options.dbscheme,
+        options.library,
+        "run 'make dbscheme' in ql/ruby/",
+    )
 }
diff --git a/ruby/ql/lib/ruby.dbscheme b/ruby/ql/lib/ruby.dbscheme
index eae6926f5000..29b7b6fc1982 100644
--- a/ruby/ql/lib/ruby.dbscheme
+++ b/ruby/ql/lib/ruby.dbscheme
@@ -1,5 +1,6 @@
 // CodeQL database schema for Ruby
 // Automatically generated from the tree-sitter grammar; do not edit
+// To regenerate, run 'make dbscheme' in ql/ruby/
 
 /*- Files and folders -*/
 
@@ -109,11 +110,23 @@ yaml_locations(unique int locatable: @yaml_locatable ref,
 @yaml_locatable = @yaml_node | @yaml_error;
 
 /*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
 databaseMetadata(
   string metadataKey: string ref,
   string value: string ref
 );
 
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
 overlayChangedFiles(
   string path: string ref
 );
diff --git a/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/old.dbscheme b/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/old.dbscheme
new file mode 100644
index 000000000000..eae6926f5000
--- /dev/null
+++ b/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/old.dbscheme
@@ -0,0 +1,1536 @@
+// CodeQL database schema for Ruby
+// Automatically generated from the tree-sitter grammar; do not edit
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Empty location -*/
+
+empty_location(
+  int location: @location_default ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- Diagnostic messages: severity -*/
+
+case @diagnostic.severity of
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
+;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Database metadata -*/
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- Ruby dbscheme -*/
+@ruby_underscore_arg = @ruby_assignment | @ruby_binary | @ruby_conditional | @ruby_operator_assignment | @ruby_range | @ruby_unary | @ruby_underscore_primary
+
+@ruby_underscore_call_operator = @ruby_reserved_word
+
+@ruby_underscore_expression = @ruby_assignment | @ruby_binary | @ruby_break | @ruby_call | @ruby_match_pattern | @ruby_next | @ruby_operator_assignment | @ruby_return | @ruby_test_pattern | @ruby_unary | @ruby_underscore_arg | @ruby_yield
+
+@ruby_underscore_lhs = @ruby_call | @ruby_element_reference | @ruby_scope_resolution | @ruby_token_false | @ruby_token_nil | @ruby_token_true | @ruby_underscore_variable
+
+@ruby_underscore_method_name = @ruby_delimited_symbol | @ruby_setter | @ruby_token_constant | @ruby_token_identifier | @ruby_token_operator | @ruby_token_simple_symbol | @ruby_underscore_nonlocal_variable
+
+@ruby_underscore_nonlocal_variable = @ruby_token_class_variable | @ruby_token_global_variable | @ruby_token_instance_variable
+
+@ruby_underscore_pattern_constant = @ruby_scope_resolution | @ruby_token_constant
+
+@ruby_underscore_pattern_expr = @ruby_alternative_pattern | @ruby_as_pattern | @ruby_underscore_pattern_expr_basic
+
+@ruby_underscore_pattern_expr_basic = @ruby_array_pattern | @ruby_expression_reference_pattern | @ruby_find_pattern | @ruby_hash_pattern | @ruby_parenthesized_pattern | @ruby_range | @ruby_token_identifier | @ruby_underscore_pattern_constant | @ruby_underscore_pattern_primitive | @ruby_variable_reference_pattern
+
+@ruby_underscore_pattern_primitive = @ruby_delimited_symbol | @ruby_lambda | @ruby_regex | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_symbol_array | @ruby_token_encoding | @ruby_token_false | @ruby_token_file | @ruby_token_heredoc_beginning | @ruby_token_line | @ruby_token_nil | @ruby_token_self | @ruby_token_simple_symbol | @ruby_token_true | @ruby_unary | @ruby_underscore_simple_numeric
+
+@ruby_underscore_pattern_top_expr_body = @ruby_array_pattern | @ruby_find_pattern | @ruby_hash_pattern | @ruby_underscore_pattern_expr
+
+@ruby_underscore_primary = @ruby_array | @ruby_begin | @ruby_break | @ruby_call | @ruby_case__ | @ruby_case_match | @ruby_chained_string | @ruby_class | @ruby_delimited_symbol | @ruby_for | @ruby_hash | @ruby_if | @ruby_lambda | @ruby_method | @ruby_module | @ruby_next | @ruby_parenthesized_statements | @ruby_redo | @ruby_regex | @ruby_retry | @ruby_return | @ruby_singleton_class | @ruby_singleton_method | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_symbol_array | @ruby_token_character | @ruby_token_heredoc_beginning | @ruby_token_simple_symbol | @ruby_unary | @ruby_underscore_lhs | @ruby_underscore_simple_numeric | @ruby_unless | @ruby_until | @ruby_while | @ruby_yield
+
+@ruby_underscore_simple_numeric = @ruby_complex | @ruby_rational | @ruby_token_float | @ruby_token_integer
+
+@ruby_underscore_statement = @ruby_alias | @ruby_begin_block | @ruby_end_block | @ruby_if_modifier | @ruby_rescue_modifier | @ruby_undef | @ruby_underscore_expression | @ruby_unless_modifier | @ruby_until_modifier | @ruby_while_modifier
+
+@ruby_underscore_variable = @ruby_token_constant | @ruby_token_identifier | @ruby_token_self | @ruby_token_super | @ruby_underscore_nonlocal_variable
+
+ruby_alias_def(
+  unique int id: @ruby_alias,
+  int alias: @ruby_underscore_method_name ref,
+  int name: @ruby_underscore_method_name ref
+);
+
+#keyset[ruby_alternative_pattern, index]
+ruby_alternative_pattern_alternatives(
+  int ruby_alternative_pattern: @ruby_alternative_pattern ref,
+  int index: int ref,
+  unique int alternatives: @ruby_underscore_pattern_expr_basic ref
+);
+
+ruby_alternative_pattern_def(
+  unique int id: @ruby_alternative_pattern
+);
+
+@ruby_argument_list_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_argument_list, index]
+ruby_argument_list_child(
+  int ruby_argument_list: @ruby_argument_list ref,
+  int index: int ref,
+  unique int child: @ruby_argument_list_child_type ref
+);
+
+ruby_argument_list_def(
+  unique int id: @ruby_argument_list
+);
+
+@ruby_array_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_array, index]
+ruby_array_child(
+  int ruby_array: @ruby_array ref,
+  int index: int ref,
+  unique int child: @ruby_array_child_type ref
+);
+
+ruby_array_def(
+  unique int id: @ruby_array
+);
+
+ruby_array_pattern_class(
+  unique int ruby_array_pattern: @ruby_array_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_array_pattern_child_type = @ruby_splat_parameter | @ruby_underscore_pattern_expr
+
+#keyset[ruby_array_pattern, index]
+ruby_array_pattern_child(
+  int ruby_array_pattern: @ruby_array_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_array_pattern_child_type ref
+);
+
+ruby_array_pattern_def(
+  unique int id: @ruby_array_pattern
+);
+
+ruby_as_pattern_def(
+  unique int id: @ruby_as_pattern,
+  int name: @ruby_token_identifier ref,
+  int value: @ruby_underscore_pattern_expr ref
+);
+
+@ruby_assignment_left_type = @ruby_left_assignment_list | @ruby_underscore_lhs
+
+@ruby_assignment_right_type = @ruby_rescue_modifier | @ruby_right_assignment_list | @ruby_splat_argument | @ruby_underscore_expression
+
+ruby_assignment_def(
+  unique int id: @ruby_assignment,
+  int left: @ruby_assignment_left_type ref,
+  int right: @ruby_assignment_right_type ref
+);
+
+@ruby_bare_string_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_bare_string, index]
+ruby_bare_string_child(
+  int ruby_bare_string: @ruby_bare_string ref,
+  int index: int ref,
+  unique int child: @ruby_bare_string_child_type ref
+);
+
+ruby_bare_string_def(
+  unique int id: @ruby_bare_string
+);
+
+@ruby_bare_symbol_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_bare_symbol, index]
+ruby_bare_symbol_child(
+  int ruby_bare_symbol: @ruby_bare_symbol ref,
+  int index: int ref,
+  unique int child: @ruby_bare_symbol_child_type ref
+);
+
+ruby_bare_symbol_def(
+  unique int id: @ruby_bare_symbol
+);
+
+@ruby_begin_child_type = @ruby_else | @ruby_ensure | @ruby_rescue | @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_begin, index]
+ruby_begin_child(
+  int ruby_begin: @ruby_begin ref,
+  int index: int ref,
+  unique int child: @ruby_begin_child_type ref
+);
+
+ruby_begin_def(
+  unique int id: @ruby_begin
+);
+
+@ruby_begin_block_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_begin_block, index]
+ruby_begin_block_child(
+  int ruby_begin_block: @ruby_begin_block ref,
+  int index: int ref,
+  unique int child: @ruby_begin_block_child_type ref
+);
+
+ruby_begin_block_def(
+  unique int id: @ruby_begin_block
+);
+
+@ruby_binary_left_type = @ruby_underscore_expression | @ruby_underscore_simple_numeric
+
+case @ruby_binary.operator of
+  0 = @ruby_binary_bangequal
+| 1 = @ruby_binary_bangtilde
+| 2 = @ruby_binary_percent
+| 3 = @ruby_binary_ampersand
+| 4 = @ruby_binary_ampersandampersand
+| 5 = @ruby_binary_star
+| 6 = @ruby_binary_starstar
+| 7 = @ruby_binary_plus
+| 8 = @ruby_binary_minus
+| 9 = @ruby_binary_slash
+| 10 = @ruby_binary_langle
+| 11 = @ruby_binary_langlelangle
+| 12 = @ruby_binary_langleequal
+| 13 = @ruby_binary_langleequalrangle
+| 14 = @ruby_binary_equalequal
+| 15 = @ruby_binary_equalequalequal
+| 16 = @ruby_binary_equaltilde
+| 17 = @ruby_binary_rangle
+| 18 = @ruby_binary_rangleequal
+| 19 = @ruby_binary_ranglerangle
+| 20 = @ruby_binary_caret
+| 21 = @ruby_binary_and
+| 22 = @ruby_binary_or
+| 23 = @ruby_binary_pipe
+| 24 = @ruby_binary_pipepipe
+;
+
+
+ruby_binary_def(
+  unique int id: @ruby_binary,
+  int left: @ruby_binary_left_type ref,
+  int operator: int ref,
+  int right: @ruby_underscore_expression ref
+);
+
+ruby_block_body(
+  unique int ruby_block: @ruby_block ref,
+  unique int body: @ruby_block_body ref
+);
+
+ruby_block_parameters(
+  unique int ruby_block: @ruby_block ref,
+  unique int parameters: @ruby_block_parameters ref
+);
+
+ruby_block_def(
+  unique int id: @ruby_block
+);
+
+ruby_block_argument_child(
+  unique int ruby_block_argument: @ruby_block_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_block_argument_def(
+  unique int id: @ruby_block_argument
+);
+
+@ruby_block_body_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_block_body, index]
+ruby_block_body_child(
+  int ruby_block_body: @ruby_block_body ref,
+  int index: int ref,
+  unique int child: @ruby_block_body_child_type ref
+);
+
+ruby_block_body_def(
+  unique int id: @ruby_block_body
+);
+
+ruby_block_parameter_name(
+  unique int ruby_block_parameter: @ruby_block_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_block_parameter_def(
+  unique int id: @ruby_block_parameter
+);
+
+#keyset[ruby_block_parameters, index]
+ruby_block_parameters_locals(
+  int ruby_block_parameters: @ruby_block_parameters ref,
+  int index: int ref,
+  unique int locals: @ruby_token_identifier ref
+);
+
+@ruby_block_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_block_parameters, index]
+ruby_block_parameters_child(
+  int ruby_block_parameters: @ruby_block_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_block_parameters_child_type ref
+);
+
+ruby_block_parameters_def(
+  unique int id: @ruby_block_parameters
+);
+
+@ruby_body_statement_child_type = @ruby_else | @ruby_ensure | @ruby_rescue | @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_body_statement, index]
+ruby_body_statement_child(
+  int ruby_body_statement: @ruby_body_statement ref,
+  int index: int ref,
+  unique int child: @ruby_body_statement_child_type ref
+);
+
+ruby_body_statement_def(
+  unique int id: @ruby_body_statement
+);
+
+ruby_break_child(
+  unique int ruby_break: @ruby_break ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_break_def(
+  unique int id: @ruby_break
+);
+
+ruby_call_arguments(
+  unique int ruby_call: @ruby_call ref,
+  unique int arguments: @ruby_argument_list ref
+);
+
+@ruby_call_block_type = @ruby_block | @ruby_do_block
+
+ruby_call_block(
+  unique int ruby_call: @ruby_call ref,
+  unique int block: @ruby_call_block_type ref
+);
+
+@ruby_call_method_type = @ruby_token_operator | @ruby_underscore_variable
+
+ruby_call_method(
+  unique int ruby_call: @ruby_call ref,
+  unique int method: @ruby_call_method_type ref
+);
+
+ruby_call_operator(
+  unique int ruby_call: @ruby_call ref,
+  unique int operator: @ruby_underscore_call_operator ref
+);
+
+ruby_call_receiver(
+  unique int ruby_call: @ruby_call ref,
+  unique int receiver: @ruby_underscore_primary ref
+);
+
+ruby_call_def(
+  unique int id: @ruby_call
+);
+
+ruby_case_value(
+  unique int ruby_case__: @ruby_case__ ref,
+  unique int value: @ruby_underscore_statement ref
+);
+
+@ruby_case_child_type = @ruby_else | @ruby_when
+
+#keyset[ruby_case__, index]
+ruby_case_child(
+  int ruby_case__: @ruby_case__ ref,
+  int index: int ref,
+  unique int child: @ruby_case_child_type ref
+);
+
+ruby_case_def(
+  unique int id: @ruby_case__
+);
+
+#keyset[ruby_case_match, index]
+ruby_case_match_clauses(
+  int ruby_case_match: @ruby_case_match ref,
+  int index: int ref,
+  unique int clauses: @ruby_in_clause ref
+);
+
+ruby_case_match_else(
+  unique int ruby_case_match: @ruby_case_match ref,
+  unique int else: @ruby_else ref
+);
+
+ruby_case_match_def(
+  unique int id: @ruby_case_match,
+  int value: @ruby_underscore_statement ref
+);
+
+#keyset[ruby_chained_string, index]
+ruby_chained_string_child(
+  int ruby_chained_string: @ruby_chained_string ref,
+  int index: int ref,
+  unique int child: @ruby_string__ ref
+);
+
+ruby_chained_string_def(
+  unique int id: @ruby_chained_string
+);
+
+ruby_class_body(
+  unique int ruby_class: @ruby_class ref,
+  unique int body: @ruby_body_statement ref
+);
+
+@ruby_class_name_type = @ruby_scope_resolution | @ruby_token_constant
+
+ruby_class_superclass(
+  unique int ruby_class: @ruby_class ref,
+  unique int superclass: @ruby_superclass ref
+);
+
+ruby_class_def(
+  unique int id: @ruby_class,
+  int name: @ruby_class_name_type ref
+);
+
+@ruby_complex_child_type = @ruby_rational | @ruby_token_float | @ruby_token_integer
+
+ruby_complex_def(
+  unique int id: @ruby_complex,
+  int child: @ruby_complex_child_type ref
+);
+
+ruby_conditional_def(
+  unique int id: @ruby_conditional,
+  int alternative: @ruby_underscore_arg ref,
+  int condition: @ruby_underscore_arg ref,
+  int consequence: @ruby_underscore_arg ref
+);
+
+@ruby_delimited_symbol_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_delimited_symbol, index]
+ruby_delimited_symbol_child(
+  int ruby_delimited_symbol: @ruby_delimited_symbol ref,
+  int index: int ref,
+  unique int child: @ruby_delimited_symbol_child_type ref
+);
+
+ruby_delimited_symbol_def(
+  unique int id: @ruby_delimited_symbol
+);
+
+@ruby_destructured_left_assignment_child_type = @ruby_destructured_left_assignment | @ruby_rest_assignment | @ruby_underscore_lhs
+
+#keyset[ruby_destructured_left_assignment, index]
+ruby_destructured_left_assignment_child(
+  int ruby_destructured_left_assignment: @ruby_destructured_left_assignment ref,
+  int index: int ref,
+  unique int child: @ruby_destructured_left_assignment_child_type ref
+);
+
+ruby_destructured_left_assignment_def(
+  unique int id: @ruby_destructured_left_assignment
+);
+
+@ruby_destructured_parameter_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_destructured_parameter, index]
+ruby_destructured_parameter_child(
+  int ruby_destructured_parameter: @ruby_destructured_parameter ref,
+  int index: int ref,
+  unique int child: @ruby_destructured_parameter_child_type ref
+);
+
+ruby_destructured_parameter_def(
+  unique int id: @ruby_destructured_parameter
+);
+
+@ruby_do_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_do, index]
+ruby_do_child(
+  int ruby_do: @ruby_do ref,
+  int index: int ref,
+  unique int child: @ruby_do_child_type ref
+);
+
+ruby_do_def(
+  unique int id: @ruby_do
+);
+
+ruby_do_block_body(
+  unique int ruby_do_block: @ruby_do_block ref,
+  unique int body: @ruby_body_statement ref
+);
+
+ruby_do_block_parameters(
+  unique int ruby_do_block: @ruby_do_block ref,
+  unique int parameters: @ruby_block_parameters ref
+);
+
+ruby_do_block_def(
+  unique int id: @ruby_do_block
+);
+
+@ruby_element_reference_block_type = @ruby_block | @ruby_do_block
+
+ruby_element_reference_block(
+  unique int ruby_element_reference: @ruby_element_reference ref,
+  unique int block: @ruby_element_reference_block_type ref
+);
+
+@ruby_element_reference_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_element_reference, index]
+ruby_element_reference_child(
+  int ruby_element_reference: @ruby_element_reference ref,
+  int index: int ref,
+  unique int child: @ruby_element_reference_child_type ref
+);
+
+ruby_element_reference_def(
+  unique int id: @ruby_element_reference,
+  int object: @ruby_underscore_primary ref
+);
+
+@ruby_else_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_else, index]
+ruby_else_child(
+  int ruby_else: @ruby_else ref,
+  int index: int ref,
+  unique int child: @ruby_else_child_type ref
+);
+
+ruby_else_def(
+  unique int id: @ruby_else
+);
+
+@ruby_elsif_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_elsif_alternative(
+  unique int ruby_elsif: @ruby_elsif ref,
+  unique int alternative: @ruby_elsif_alternative_type ref
+);
+
+ruby_elsif_consequence(
+  unique int ruby_elsif: @ruby_elsif ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_elsif_def(
+  unique int id: @ruby_elsif,
+  int condition: @ruby_underscore_statement ref
+);
+
+@ruby_end_block_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_end_block, index]
+ruby_end_block_child(
+  int ruby_end_block: @ruby_end_block ref,
+  int index: int ref,
+  unique int child: @ruby_end_block_child_type ref
+);
+
+ruby_end_block_def(
+  unique int id: @ruby_end_block
+);
+
+@ruby_ensure_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_ensure, index]
+ruby_ensure_child(
+  int ruby_ensure: @ruby_ensure ref,
+  int index: int ref,
+  unique int child: @ruby_ensure_child_type ref
+);
+
+ruby_ensure_def(
+  unique int id: @ruby_ensure
+);
+
+ruby_exception_variable_def(
+  unique int id: @ruby_exception_variable,
+  int child: @ruby_underscore_lhs ref
+);
+
+@ruby_exceptions_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+#keyset[ruby_exceptions, index]
+ruby_exceptions_child(
+  int ruby_exceptions: @ruby_exceptions ref,
+  int index: int ref,
+  unique int child: @ruby_exceptions_child_type ref
+);
+
+ruby_exceptions_def(
+  unique int id: @ruby_exceptions
+);
+
+ruby_expression_reference_pattern_def(
+  unique int id: @ruby_expression_reference_pattern,
+  int value: @ruby_underscore_expression ref
+);
+
+ruby_find_pattern_class(
+  unique int ruby_find_pattern: @ruby_find_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_find_pattern_child_type = @ruby_splat_parameter | @ruby_underscore_pattern_expr
+
+#keyset[ruby_find_pattern, index]
+ruby_find_pattern_child(
+  int ruby_find_pattern: @ruby_find_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_find_pattern_child_type ref
+);
+
+ruby_find_pattern_def(
+  unique int id: @ruby_find_pattern
+);
+
+@ruby_for_pattern_type = @ruby_left_assignment_list | @ruby_underscore_lhs
+
+ruby_for_def(
+  unique int id: @ruby_for,
+  int body: @ruby_do ref,
+  int pattern: @ruby_for_pattern_type ref,
+  int value: @ruby_in ref
+);
+
+@ruby_hash_child_type = @ruby_hash_splat_argument | @ruby_pair
+
+#keyset[ruby_hash, index]
+ruby_hash_child(
+  int ruby_hash: @ruby_hash ref,
+  int index: int ref,
+  unique int child: @ruby_hash_child_type ref
+);
+
+ruby_hash_def(
+  unique int id: @ruby_hash
+);
+
+ruby_hash_pattern_class(
+  unique int ruby_hash_pattern: @ruby_hash_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_hash_pattern_child_type = @ruby_hash_splat_parameter | @ruby_keyword_pattern | @ruby_token_hash_splat_nil
+
+#keyset[ruby_hash_pattern, index]
+ruby_hash_pattern_child(
+  int ruby_hash_pattern: @ruby_hash_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_hash_pattern_child_type ref
+);
+
+ruby_hash_pattern_def(
+  unique int id: @ruby_hash_pattern
+);
+
+ruby_hash_splat_argument_child(
+  unique int ruby_hash_splat_argument: @ruby_hash_splat_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_hash_splat_argument_def(
+  unique int id: @ruby_hash_splat_argument
+);
+
+ruby_hash_splat_parameter_name(
+  unique int ruby_hash_splat_parameter: @ruby_hash_splat_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_hash_splat_parameter_def(
+  unique int id: @ruby_hash_splat_parameter
+);
+
+@ruby_heredoc_body_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_heredoc_content | @ruby_token_heredoc_end
+
+#keyset[ruby_heredoc_body, index]
+ruby_heredoc_body_child(
+  int ruby_heredoc_body: @ruby_heredoc_body ref,
+  int index: int ref,
+  unique int child: @ruby_heredoc_body_child_type ref
+);
+
+ruby_heredoc_body_def(
+  unique int id: @ruby_heredoc_body
+);
+
+@ruby_if_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_if_alternative(
+  unique int ruby_if: @ruby_if ref,
+  unique int alternative: @ruby_if_alternative_type ref
+);
+
+ruby_if_consequence(
+  unique int ruby_if: @ruby_if ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_if_def(
+  unique int id: @ruby_if,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_if_guard_def(
+  unique int id: @ruby_if_guard,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_if_modifier_def(
+  unique int id: @ruby_if_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_in_def(
+  unique int id: @ruby_in,
+  int child: @ruby_underscore_arg ref
+);
+
+ruby_in_clause_body(
+  unique int ruby_in_clause: @ruby_in_clause ref,
+  unique int body: @ruby_then ref
+);
+
+@ruby_in_clause_guard_type = @ruby_if_guard | @ruby_unless_guard
+
+ruby_in_clause_guard(
+  unique int ruby_in_clause: @ruby_in_clause ref,
+  unique int guard: @ruby_in_clause_guard_type ref
+);
+
+ruby_in_clause_def(
+  unique int id: @ruby_in_clause,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref
+);
+
+@ruby_interpolation_child_type = @ruby_token_empty_statement | @ruby_underscore_nonlocal_variable | @ruby_underscore_statement
+
+#keyset[ruby_interpolation, index]
+ruby_interpolation_child(
+  int ruby_interpolation: @ruby_interpolation ref,
+  int index: int ref,
+  unique int child: @ruby_interpolation_child_type ref
+);
+
+ruby_interpolation_def(
+  unique int id: @ruby_interpolation
+);
+
+ruby_keyword_parameter_value(
+  unique int ruby_keyword_parameter: @ruby_keyword_parameter ref,
+  unique int value: @ruby_underscore_arg ref
+);
+
+ruby_keyword_parameter_def(
+  unique int id: @ruby_keyword_parameter,
+  int name: @ruby_token_identifier ref
+);
+
+@ruby_keyword_pattern_key_type = @ruby_string__ | @ruby_token_hash_key_symbol
+
+ruby_keyword_pattern_value(
+  unique int ruby_keyword_pattern: @ruby_keyword_pattern ref,
+  unique int value: @ruby_underscore_pattern_expr ref
+);
+
+ruby_keyword_pattern_def(
+  unique int id: @ruby_keyword_pattern,
+  int key__: @ruby_keyword_pattern_key_type ref
+);
+
+@ruby_lambda_body_type = @ruby_block | @ruby_do_block
+
+ruby_lambda_parameters(
+  unique int ruby_lambda: @ruby_lambda ref,
+  unique int parameters: @ruby_lambda_parameters ref
+);
+
+ruby_lambda_def(
+  unique int id: @ruby_lambda,
+  int body: @ruby_lambda_body_type ref
+);
+
+@ruby_lambda_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_lambda_parameters, index]
+ruby_lambda_parameters_child(
+  int ruby_lambda_parameters: @ruby_lambda_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_lambda_parameters_child_type ref
+);
+
+ruby_lambda_parameters_def(
+  unique int id: @ruby_lambda_parameters
+);
+
+@ruby_left_assignment_list_child_type = @ruby_destructured_left_assignment | @ruby_rest_assignment | @ruby_underscore_lhs
+
+#keyset[ruby_left_assignment_list, index]
+ruby_left_assignment_list_child(
+  int ruby_left_assignment_list: @ruby_left_assignment_list ref,
+  int index: int ref,
+  unique int child: @ruby_left_assignment_list_child_type ref
+);
+
+ruby_left_assignment_list_def(
+  unique int id: @ruby_left_assignment_list
+);
+
+ruby_match_pattern_def(
+  unique int id: @ruby_match_pattern,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_method_body_type = @ruby_body_statement | @ruby_rescue_modifier | @ruby_underscore_arg
+
+ruby_method_body(
+  unique int ruby_method: @ruby_method ref,
+  unique int body: @ruby_method_body_type ref
+);
+
+ruby_method_parameters(
+  unique int ruby_method: @ruby_method ref,
+  unique int parameters: @ruby_method_parameters ref
+);
+
+ruby_method_def(
+  unique int id: @ruby_method,
+  int name: @ruby_underscore_method_name ref
+);
+
+@ruby_method_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_method_parameters, index]
+ruby_method_parameters_child(
+  int ruby_method_parameters: @ruby_method_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_method_parameters_child_type ref
+);
+
+ruby_method_parameters_def(
+  unique int id: @ruby_method_parameters
+);
+
+ruby_module_body(
+  unique int ruby_module: @ruby_module ref,
+  unique int body: @ruby_body_statement ref
+);
+
+@ruby_module_name_type = @ruby_scope_resolution | @ruby_token_constant
+
+ruby_module_def(
+  unique int id: @ruby_module,
+  int name: @ruby_module_name_type ref
+);
+
+ruby_next_child(
+  unique int ruby_next: @ruby_next ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_next_def(
+  unique int id: @ruby_next
+);
+
+case @ruby_operator_assignment.operator of
+  0 = @ruby_operator_assignment_percentequal
+| 1 = @ruby_operator_assignment_ampersandampersandequal
+| 2 = @ruby_operator_assignment_ampersandequal
+| 3 = @ruby_operator_assignment_starstarequal
+| 4 = @ruby_operator_assignment_starequal
+| 5 = @ruby_operator_assignment_plusequal
+| 6 = @ruby_operator_assignment_minusequal
+| 7 = @ruby_operator_assignment_slashequal
+| 8 = @ruby_operator_assignment_langlelangleequal
+| 9 = @ruby_operator_assignment_ranglerangleequal
+| 10 = @ruby_operator_assignment_caretequal
+| 11 = @ruby_operator_assignment_pipeequal
+| 12 = @ruby_operator_assignment_pipepipeequal
+;
+
+
+@ruby_operator_assignment_right_type = @ruby_rescue_modifier | @ruby_underscore_expression
+
+ruby_operator_assignment_def(
+  unique int id: @ruby_operator_assignment,
+  int left: @ruby_underscore_lhs ref,
+  int operator: int ref,
+  int right: @ruby_operator_assignment_right_type ref
+);
+
+ruby_optional_parameter_def(
+  unique int id: @ruby_optional_parameter,
+  int name: @ruby_token_identifier ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_pair_key_type = @ruby_string__ | @ruby_token_hash_key_symbol | @ruby_underscore_arg
+
+ruby_pair_value(
+  unique int ruby_pair: @ruby_pair ref,
+  unique int value: @ruby_underscore_arg ref
+);
+
+ruby_pair_def(
+  unique int id: @ruby_pair,
+  int key__: @ruby_pair_key_type ref
+);
+
+ruby_parenthesized_pattern_def(
+  unique int id: @ruby_parenthesized_pattern,
+  int child: @ruby_underscore_pattern_expr ref
+);
+
+@ruby_parenthesized_statements_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_parenthesized_statements, index]
+ruby_parenthesized_statements_child(
+  int ruby_parenthesized_statements: @ruby_parenthesized_statements ref,
+  int index: int ref,
+  unique int child: @ruby_parenthesized_statements_child_type ref
+);
+
+ruby_parenthesized_statements_def(
+  unique int id: @ruby_parenthesized_statements
+);
+
+@ruby_pattern_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+ruby_pattern_def(
+  unique int id: @ruby_pattern,
+  int child: @ruby_pattern_child_type ref
+);
+
+@ruby_program_child_type = @ruby_token_empty_statement | @ruby_token_uninterpreted | @ruby_underscore_statement
+
+#keyset[ruby_program, index]
+ruby_program_child(
+  int ruby_program: @ruby_program ref,
+  int index: int ref,
+  unique int child: @ruby_program_child_type ref
+);
+
+ruby_program_def(
+  unique int id: @ruby_program
+);
+
+@ruby_range_begin_type = @ruby_underscore_arg | @ruby_underscore_pattern_primitive
+
+ruby_range_begin(
+  unique int ruby_range: @ruby_range ref,
+  unique int begin: @ruby_range_begin_type ref
+);
+
+@ruby_range_end_type = @ruby_underscore_arg | @ruby_underscore_pattern_primitive
+
+ruby_range_end(
+  unique int ruby_range: @ruby_range ref,
+  unique int end: @ruby_range_end_type ref
+);
+
+case @ruby_range.operator of
+  0 = @ruby_range_dotdot
+| 1 = @ruby_range_dotdotdot
+;
+
+
+ruby_range_def(
+  unique int id: @ruby_range,
+  int operator: int ref
+);
+
+@ruby_rational_child_type = @ruby_token_float | @ruby_token_integer
+
+ruby_rational_def(
+  unique int id: @ruby_rational,
+  int child: @ruby_rational_child_type ref
+);
+
+ruby_redo_child(
+  unique int ruby_redo: @ruby_redo ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_redo_def(
+  unique int id: @ruby_redo
+);
+
+@ruby_regex_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_regex, index]
+ruby_regex_child(
+  int ruby_regex: @ruby_regex ref,
+  int index: int ref,
+  unique int child: @ruby_regex_child_type ref
+);
+
+ruby_regex_def(
+  unique int id: @ruby_regex
+);
+
+ruby_rescue_body(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int body: @ruby_then ref
+);
+
+ruby_rescue_exceptions(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int exceptions: @ruby_exceptions ref
+);
+
+ruby_rescue_variable(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int variable: @ruby_exception_variable ref
+);
+
+ruby_rescue_def(
+  unique int id: @ruby_rescue
+);
+
+@ruby_rescue_modifier_body_type = @ruby_underscore_arg | @ruby_underscore_statement
+
+ruby_rescue_modifier_def(
+  unique int id: @ruby_rescue_modifier,
+  int body: @ruby_rescue_modifier_body_type ref,
+  int handler: @ruby_underscore_expression ref
+);
+
+ruby_rest_assignment_child(
+  unique int ruby_rest_assignment: @ruby_rest_assignment ref,
+  unique int child: @ruby_underscore_lhs ref
+);
+
+ruby_rest_assignment_def(
+  unique int id: @ruby_rest_assignment
+);
+
+ruby_retry_child(
+  unique int ruby_retry: @ruby_retry ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_retry_def(
+  unique int id: @ruby_retry
+);
+
+ruby_return_child(
+  unique int ruby_return: @ruby_return ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_return_def(
+  unique int id: @ruby_return
+);
+
+@ruby_right_assignment_list_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+#keyset[ruby_right_assignment_list, index]
+ruby_right_assignment_list_child(
+  int ruby_right_assignment_list: @ruby_right_assignment_list ref,
+  int index: int ref,
+  unique int child: @ruby_right_assignment_list_child_type ref
+);
+
+ruby_right_assignment_list_def(
+  unique int id: @ruby_right_assignment_list
+);
+
+@ruby_scope_resolution_scope_type = @ruby_underscore_pattern_constant | @ruby_underscore_primary
+
+ruby_scope_resolution_scope(
+  unique int ruby_scope_resolution: @ruby_scope_resolution ref,
+  unique int scope: @ruby_scope_resolution_scope_type ref
+);
+
+ruby_scope_resolution_def(
+  unique int id: @ruby_scope_resolution,
+  int name: @ruby_token_constant ref
+);
+
+ruby_setter_def(
+  unique int id: @ruby_setter,
+  int name: @ruby_token_identifier ref
+);
+
+ruby_singleton_class_body(
+  unique int ruby_singleton_class: @ruby_singleton_class ref,
+  unique int body: @ruby_body_statement ref
+);
+
+ruby_singleton_class_def(
+  unique int id: @ruby_singleton_class,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_singleton_method_body_type = @ruby_body_statement | @ruby_rescue_modifier | @ruby_underscore_arg
+
+ruby_singleton_method_body(
+  unique int ruby_singleton_method: @ruby_singleton_method ref,
+  unique int body: @ruby_singleton_method_body_type ref
+);
+
+@ruby_singleton_method_object_type = @ruby_underscore_arg | @ruby_underscore_variable
+
+ruby_singleton_method_parameters(
+  unique int ruby_singleton_method: @ruby_singleton_method ref,
+  unique int parameters: @ruby_method_parameters ref
+);
+
+ruby_singleton_method_def(
+  unique int id: @ruby_singleton_method,
+  int name: @ruby_underscore_method_name ref,
+  int object: @ruby_singleton_method_object_type ref
+);
+
+ruby_splat_argument_child(
+  unique int ruby_splat_argument: @ruby_splat_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_splat_argument_def(
+  unique int id: @ruby_splat_argument
+);
+
+ruby_splat_parameter_name(
+  unique int ruby_splat_parameter: @ruby_splat_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_splat_parameter_def(
+  unique int id: @ruby_splat_parameter
+);
+
+@ruby_string_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_string__, index]
+ruby_string_child(
+  int ruby_string__: @ruby_string__ ref,
+  int index: int ref,
+  unique int child: @ruby_string_child_type ref
+);
+
+ruby_string_def(
+  unique int id: @ruby_string__
+);
+
+#keyset[ruby_string_array, index]
+ruby_string_array_child(
+  int ruby_string_array: @ruby_string_array ref,
+  int index: int ref,
+  unique int child: @ruby_bare_string ref
+);
+
+ruby_string_array_def(
+  unique int id: @ruby_string_array
+);
+
+@ruby_subshell_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_subshell, index]
+ruby_subshell_child(
+  int ruby_subshell: @ruby_subshell ref,
+  int index: int ref,
+  unique int child: @ruby_subshell_child_type ref
+);
+
+ruby_subshell_def(
+  unique int id: @ruby_subshell
+);
+
+ruby_superclass_def(
+  unique int id: @ruby_superclass,
+  int child: @ruby_underscore_expression ref
+);
+
+#keyset[ruby_symbol_array, index]
+ruby_symbol_array_child(
+  int ruby_symbol_array: @ruby_symbol_array ref,
+  int index: int ref,
+  unique int child: @ruby_bare_symbol ref
+);
+
+ruby_symbol_array_def(
+  unique int id: @ruby_symbol_array
+);
+
+ruby_test_pattern_def(
+  unique int id: @ruby_test_pattern,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_then_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_then, index]
+ruby_then_child(
+  int ruby_then: @ruby_then ref,
+  int index: int ref,
+  unique int child: @ruby_then_child_type ref
+);
+
+ruby_then_def(
+  unique int id: @ruby_then
+);
+
+@ruby_unary_operand_type = @ruby_parenthesized_statements | @ruby_underscore_expression | @ruby_underscore_simple_numeric
+
+case @ruby_unary.operator of
+  0 = @ruby_unary_bang
+| 1 = @ruby_unary_plus
+| 2 = @ruby_unary_minus
+| 3 = @ruby_unary_definedquestion
+| 4 = @ruby_unary_not
+| 5 = @ruby_unary_tilde
+;
+
+
+ruby_unary_def(
+  unique int id: @ruby_unary,
+  int operand: @ruby_unary_operand_type ref,
+  int operator: int ref
+);
+
+#keyset[ruby_undef, index]
+ruby_undef_child(
+  int ruby_undef: @ruby_undef ref,
+  int index: int ref,
+  unique int child: @ruby_underscore_method_name ref
+);
+
+ruby_undef_def(
+  unique int id: @ruby_undef
+);
+
+@ruby_unless_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_unless_alternative(
+  unique int ruby_unless: @ruby_unless ref,
+  unique int alternative: @ruby_unless_alternative_type ref
+);
+
+ruby_unless_consequence(
+  unique int ruby_unless: @ruby_unless ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_unless_def(
+  unique int id: @ruby_unless,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_unless_guard_def(
+  unique int id: @ruby_unless_guard,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_unless_modifier_def(
+  unique int id: @ruby_unless_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_until_def(
+  unique int id: @ruby_until,
+  int body: @ruby_do ref,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_until_modifier_def(
+  unique int id: @ruby_until_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+@ruby_variable_reference_pattern_name_type = @ruby_token_identifier | @ruby_underscore_nonlocal_variable
+
+ruby_variable_reference_pattern_def(
+  unique int id: @ruby_variable_reference_pattern,
+  int name: @ruby_variable_reference_pattern_name_type ref
+);
+
+ruby_when_body(
+  unique int ruby_when: @ruby_when ref,
+  unique int body: @ruby_then ref
+);
+
+#keyset[ruby_when, index]
+ruby_when_pattern(
+  int ruby_when: @ruby_when ref,
+  int index: int ref,
+  unique int pattern: @ruby_pattern ref
+);
+
+ruby_when_def(
+  unique int id: @ruby_when
+);
+
+ruby_while_def(
+  unique int id: @ruby_while,
+  int body: @ruby_do ref,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_while_modifier_def(
+  unique int id: @ruby_while_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_yield_child(
+  unique int ruby_yield: @ruby_yield ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_yield_def(
+  unique int id: @ruby_yield
+);
+
+ruby_tokeninfo(
+  unique int id: @ruby_token,
+  int kind: int ref,
+  string value: string ref
+);
+
+case @ruby_token.kind of
+  0 = @ruby_reserved_word
+| 1 = @ruby_token_character
+| 2 = @ruby_token_class_variable
+| 3 = @ruby_token_comment
+| 4 = @ruby_token_constant
+| 5 = @ruby_token_empty_statement
+| 6 = @ruby_token_encoding
+| 7 = @ruby_token_escape_sequence
+| 8 = @ruby_token_false
+| 9 = @ruby_token_file
+| 10 = @ruby_token_float
+| 11 = @ruby_token_forward_argument
+| 12 = @ruby_token_forward_parameter
+| 13 = @ruby_token_global_variable
+| 14 = @ruby_token_hash_key_symbol
+| 15 = @ruby_token_hash_splat_nil
+| 16 = @ruby_token_heredoc_beginning
+| 17 = @ruby_token_heredoc_content
+| 18 = @ruby_token_heredoc_end
+| 19 = @ruby_token_identifier
+| 20 = @ruby_token_instance_variable
+| 21 = @ruby_token_integer
+| 22 = @ruby_token_line
+| 23 = @ruby_token_nil
+| 24 = @ruby_token_operator
+| 25 = @ruby_token_self
+| 26 = @ruby_token_simple_symbol
+| 27 = @ruby_token_string_content
+| 28 = @ruby_token_super
+| 29 = @ruby_token_true
+| 30 = @ruby_token_uninterpreted
+;
+
+
+@ruby_ast_node = @ruby_alias | @ruby_alternative_pattern | @ruby_argument_list | @ruby_array | @ruby_array_pattern | @ruby_as_pattern | @ruby_assignment | @ruby_bare_string | @ruby_bare_symbol | @ruby_begin | @ruby_begin_block | @ruby_binary | @ruby_block | @ruby_block_argument | @ruby_block_body | @ruby_block_parameter | @ruby_block_parameters | @ruby_body_statement | @ruby_break | @ruby_call | @ruby_case__ | @ruby_case_match | @ruby_chained_string | @ruby_class | @ruby_complex | @ruby_conditional | @ruby_delimited_symbol | @ruby_destructured_left_assignment | @ruby_destructured_parameter | @ruby_do | @ruby_do_block | @ruby_element_reference | @ruby_else | @ruby_elsif | @ruby_end_block | @ruby_ensure | @ruby_exception_variable | @ruby_exceptions | @ruby_expression_reference_pattern | @ruby_find_pattern | @ruby_for | @ruby_hash | @ruby_hash_pattern | @ruby_hash_splat_argument | @ruby_hash_splat_parameter | @ruby_heredoc_body | @ruby_if | @ruby_if_guard | @ruby_if_modifier | @ruby_in | @ruby_in_clause | @ruby_interpolation | @ruby_keyword_parameter | @ruby_keyword_pattern | @ruby_lambda | @ruby_lambda_parameters | @ruby_left_assignment_list | @ruby_match_pattern | @ruby_method | @ruby_method_parameters | @ruby_module | @ruby_next | @ruby_operator_assignment | @ruby_optional_parameter | @ruby_pair | @ruby_parenthesized_pattern | @ruby_parenthesized_statements | @ruby_pattern | @ruby_program | @ruby_range | @ruby_rational | @ruby_redo | @ruby_regex | @ruby_rescue | @ruby_rescue_modifier | @ruby_rest_assignment | @ruby_retry | @ruby_return | @ruby_right_assignment_list | @ruby_scope_resolution | @ruby_setter | @ruby_singleton_class | @ruby_singleton_method | @ruby_splat_argument | @ruby_splat_parameter | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_superclass | @ruby_symbol_array | @ruby_test_pattern | @ruby_then | @ruby_token | @ruby_unary | @ruby_undef | @ruby_unless | @ruby_unless_guard | @ruby_unless_modifier | @ruby_until | @ruby_until_modifier | @ruby_variable_reference_pattern | @ruby_when | @ruby_while | @ruby_while_modifier | @ruby_yield
+
+ruby_ast_node_location(
+  unique int node: @ruby_ast_node ref,
+  int loc: @location_default ref
+);
+
+#keyset[parent, parent_index]
+ruby_ast_node_parent(
+  unique int node: @ruby_ast_node ref,
+  int parent: @ruby_ast_node ref,
+  int parent_index: int ref
+);
+
+/*- Erb dbscheme -*/
+erb_comment_directive_child(
+  unique int erb_comment_directive: @erb_comment_directive ref,
+  unique int child: @erb_token_comment ref
+);
+
+erb_comment_directive_def(
+  unique int id: @erb_comment_directive
+);
+
+erb_directive_child(
+  unique int erb_directive: @erb_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_directive_def(
+  unique int id: @erb_directive
+);
+
+erb_graphql_directive_child(
+  unique int erb_graphql_directive: @erb_graphql_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_graphql_directive_def(
+  unique int id: @erb_graphql_directive
+);
+
+erb_output_directive_child(
+  unique int erb_output_directive: @erb_output_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_output_directive_def(
+  unique int id: @erb_output_directive
+);
+
+@erb_template_child_type = @erb_comment_directive | @erb_directive | @erb_graphql_directive | @erb_output_directive | @erb_token_content
+
+#keyset[erb_template, index]
+erb_template_child(
+  int erb_template: @erb_template ref,
+  int index: int ref,
+  unique int child: @erb_template_child_type ref
+);
+
+erb_template_def(
+  unique int id: @erb_template
+);
+
+erb_tokeninfo(
+  unique int id: @erb_token,
+  int kind: int ref,
+  string value: string ref
+);
+
+case @erb_token.kind of
+  0 = @erb_reserved_word
+| 1 = @erb_token_code
+| 2 = @erb_token_comment
+| 3 = @erb_token_content
+;
+
+
+@erb_ast_node = @erb_comment_directive | @erb_directive | @erb_graphql_directive | @erb_output_directive | @erb_template | @erb_token
+
+erb_ast_node_location(
+  unique int node: @erb_ast_node ref,
+  int loc: @location_default ref
+);
+
+#keyset[parent, parent_index]
+erb_ast_node_parent(
+  unique int node: @erb_ast_node ref,
+  int parent: @erb_ast_node ref,
+  int parent_index: int ref
+);
+
diff --git a/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/ruby.dbscheme b/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/ruby.dbscheme
new file mode 100644
index 000000000000..29b7b6fc1982
--- /dev/null
+++ b/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/ruby.dbscheme
@@ -0,0 +1,1549 @@
+// CodeQL database schema for Ruby
+// Automatically generated from the tree-sitter grammar; do not edit
+// To regenerate, run 'make dbscheme' in ql/ruby/
+
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Empty location -*/
+
+empty_location(
+  int location: @location_default ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- Diagnostic messages: severity -*/
+
+case @diagnostic.severity of
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
+;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+/*- Ruby dbscheme -*/
+@ruby_underscore_arg = @ruby_assignment | @ruby_binary | @ruby_conditional | @ruby_operator_assignment | @ruby_range | @ruby_unary | @ruby_underscore_primary
+
+@ruby_underscore_call_operator = @ruby_reserved_word
+
+@ruby_underscore_expression = @ruby_assignment | @ruby_binary | @ruby_break | @ruby_call | @ruby_match_pattern | @ruby_next | @ruby_operator_assignment | @ruby_return | @ruby_test_pattern | @ruby_unary | @ruby_underscore_arg | @ruby_yield
+
+@ruby_underscore_lhs = @ruby_call | @ruby_element_reference | @ruby_scope_resolution | @ruby_token_false | @ruby_token_nil | @ruby_token_true | @ruby_underscore_variable
+
+@ruby_underscore_method_name = @ruby_delimited_symbol | @ruby_setter | @ruby_token_constant | @ruby_token_identifier | @ruby_token_operator | @ruby_token_simple_symbol | @ruby_underscore_nonlocal_variable
+
+@ruby_underscore_nonlocal_variable = @ruby_token_class_variable | @ruby_token_global_variable | @ruby_token_instance_variable
+
+@ruby_underscore_pattern_constant = @ruby_scope_resolution | @ruby_token_constant
+
+@ruby_underscore_pattern_expr = @ruby_alternative_pattern | @ruby_as_pattern | @ruby_underscore_pattern_expr_basic
+
+@ruby_underscore_pattern_expr_basic = @ruby_array_pattern | @ruby_expression_reference_pattern | @ruby_find_pattern | @ruby_hash_pattern | @ruby_parenthesized_pattern | @ruby_range | @ruby_token_identifier | @ruby_underscore_pattern_constant | @ruby_underscore_pattern_primitive | @ruby_variable_reference_pattern
+
+@ruby_underscore_pattern_primitive = @ruby_delimited_symbol | @ruby_lambda | @ruby_regex | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_symbol_array | @ruby_token_encoding | @ruby_token_false | @ruby_token_file | @ruby_token_heredoc_beginning | @ruby_token_line | @ruby_token_nil | @ruby_token_self | @ruby_token_simple_symbol | @ruby_token_true | @ruby_unary | @ruby_underscore_simple_numeric
+
+@ruby_underscore_pattern_top_expr_body = @ruby_array_pattern | @ruby_find_pattern | @ruby_hash_pattern | @ruby_underscore_pattern_expr
+
+@ruby_underscore_primary = @ruby_array | @ruby_begin | @ruby_break | @ruby_call | @ruby_case__ | @ruby_case_match | @ruby_chained_string | @ruby_class | @ruby_delimited_symbol | @ruby_for | @ruby_hash | @ruby_if | @ruby_lambda | @ruby_method | @ruby_module | @ruby_next | @ruby_parenthesized_statements | @ruby_redo | @ruby_regex | @ruby_retry | @ruby_return | @ruby_singleton_class | @ruby_singleton_method | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_symbol_array | @ruby_token_character | @ruby_token_heredoc_beginning | @ruby_token_simple_symbol | @ruby_unary | @ruby_underscore_lhs | @ruby_underscore_simple_numeric | @ruby_unless | @ruby_until | @ruby_while | @ruby_yield
+
+@ruby_underscore_simple_numeric = @ruby_complex | @ruby_rational | @ruby_token_float | @ruby_token_integer
+
+@ruby_underscore_statement = @ruby_alias | @ruby_begin_block | @ruby_end_block | @ruby_if_modifier | @ruby_rescue_modifier | @ruby_undef | @ruby_underscore_expression | @ruby_unless_modifier | @ruby_until_modifier | @ruby_while_modifier
+
+@ruby_underscore_variable = @ruby_token_constant | @ruby_token_identifier | @ruby_token_self | @ruby_token_super | @ruby_underscore_nonlocal_variable
+
+ruby_alias_def(
+  unique int id: @ruby_alias,
+  int alias: @ruby_underscore_method_name ref,
+  int name: @ruby_underscore_method_name ref
+);
+
+#keyset[ruby_alternative_pattern, index]
+ruby_alternative_pattern_alternatives(
+  int ruby_alternative_pattern: @ruby_alternative_pattern ref,
+  int index: int ref,
+  unique int alternatives: @ruby_underscore_pattern_expr_basic ref
+);
+
+ruby_alternative_pattern_def(
+  unique int id: @ruby_alternative_pattern
+);
+
+@ruby_argument_list_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_argument_list, index]
+ruby_argument_list_child(
+  int ruby_argument_list: @ruby_argument_list ref,
+  int index: int ref,
+  unique int child: @ruby_argument_list_child_type ref
+);
+
+ruby_argument_list_def(
+  unique int id: @ruby_argument_list
+);
+
+@ruby_array_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_array, index]
+ruby_array_child(
+  int ruby_array: @ruby_array ref,
+  int index: int ref,
+  unique int child: @ruby_array_child_type ref
+);
+
+ruby_array_def(
+  unique int id: @ruby_array
+);
+
+ruby_array_pattern_class(
+  unique int ruby_array_pattern: @ruby_array_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_array_pattern_child_type = @ruby_splat_parameter | @ruby_underscore_pattern_expr
+
+#keyset[ruby_array_pattern, index]
+ruby_array_pattern_child(
+  int ruby_array_pattern: @ruby_array_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_array_pattern_child_type ref
+);
+
+ruby_array_pattern_def(
+  unique int id: @ruby_array_pattern
+);
+
+ruby_as_pattern_def(
+  unique int id: @ruby_as_pattern,
+  int name: @ruby_token_identifier ref,
+  int value: @ruby_underscore_pattern_expr ref
+);
+
+@ruby_assignment_left_type = @ruby_left_assignment_list | @ruby_underscore_lhs
+
+@ruby_assignment_right_type = @ruby_rescue_modifier | @ruby_right_assignment_list | @ruby_splat_argument | @ruby_underscore_expression
+
+ruby_assignment_def(
+  unique int id: @ruby_assignment,
+  int left: @ruby_assignment_left_type ref,
+  int right: @ruby_assignment_right_type ref
+);
+
+@ruby_bare_string_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_bare_string, index]
+ruby_bare_string_child(
+  int ruby_bare_string: @ruby_bare_string ref,
+  int index: int ref,
+  unique int child: @ruby_bare_string_child_type ref
+);
+
+ruby_bare_string_def(
+  unique int id: @ruby_bare_string
+);
+
+@ruby_bare_symbol_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_bare_symbol, index]
+ruby_bare_symbol_child(
+  int ruby_bare_symbol: @ruby_bare_symbol ref,
+  int index: int ref,
+  unique int child: @ruby_bare_symbol_child_type ref
+);
+
+ruby_bare_symbol_def(
+  unique int id: @ruby_bare_symbol
+);
+
+@ruby_begin_child_type = @ruby_else | @ruby_ensure | @ruby_rescue | @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_begin, index]
+ruby_begin_child(
+  int ruby_begin: @ruby_begin ref,
+  int index: int ref,
+  unique int child: @ruby_begin_child_type ref
+);
+
+ruby_begin_def(
+  unique int id: @ruby_begin
+);
+
+@ruby_begin_block_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_begin_block, index]
+ruby_begin_block_child(
+  int ruby_begin_block: @ruby_begin_block ref,
+  int index: int ref,
+  unique int child: @ruby_begin_block_child_type ref
+);
+
+ruby_begin_block_def(
+  unique int id: @ruby_begin_block
+);
+
+@ruby_binary_left_type = @ruby_underscore_expression | @ruby_underscore_simple_numeric
+
+case @ruby_binary.operator of
+  0 = @ruby_binary_bangequal
+| 1 = @ruby_binary_bangtilde
+| 2 = @ruby_binary_percent
+| 3 = @ruby_binary_ampersand
+| 4 = @ruby_binary_ampersandampersand
+| 5 = @ruby_binary_star
+| 6 = @ruby_binary_starstar
+| 7 = @ruby_binary_plus
+| 8 = @ruby_binary_minus
+| 9 = @ruby_binary_slash
+| 10 = @ruby_binary_langle
+| 11 = @ruby_binary_langlelangle
+| 12 = @ruby_binary_langleequal
+| 13 = @ruby_binary_langleequalrangle
+| 14 = @ruby_binary_equalequal
+| 15 = @ruby_binary_equalequalequal
+| 16 = @ruby_binary_equaltilde
+| 17 = @ruby_binary_rangle
+| 18 = @ruby_binary_rangleequal
+| 19 = @ruby_binary_ranglerangle
+| 20 = @ruby_binary_caret
+| 21 = @ruby_binary_and
+| 22 = @ruby_binary_or
+| 23 = @ruby_binary_pipe
+| 24 = @ruby_binary_pipepipe
+;
+
+
+ruby_binary_def(
+  unique int id: @ruby_binary,
+  int left: @ruby_binary_left_type ref,
+  int operator: int ref,
+  int right: @ruby_underscore_expression ref
+);
+
+ruby_block_body(
+  unique int ruby_block: @ruby_block ref,
+  unique int body: @ruby_block_body ref
+);
+
+ruby_block_parameters(
+  unique int ruby_block: @ruby_block ref,
+  unique int parameters: @ruby_block_parameters ref
+);
+
+ruby_block_def(
+  unique int id: @ruby_block
+);
+
+ruby_block_argument_child(
+  unique int ruby_block_argument: @ruby_block_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_block_argument_def(
+  unique int id: @ruby_block_argument
+);
+
+@ruby_block_body_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_block_body, index]
+ruby_block_body_child(
+  int ruby_block_body: @ruby_block_body ref,
+  int index: int ref,
+  unique int child: @ruby_block_body_child_type ref
+);
+
+ruby_block_body_def(
+  unique int id: @ruby_block_body
+);
+
+ruby_block_parameter_name(
+  unique int ruby_block_parameter: @ruby_block_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_block_parameter_def(
+  unique int id: @ruby_block_parameter
+);
+
+#keyset[ruby_block_parameters, index]
+ruby_block_parameters_locals(
+  int ruby_block_parameters: @ruby_block_parameters ref,
+  int index: int ref,
+  unique int locals: @ruby_token_identifier ref
+);
+
+@ruby_block_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_block_parameters, index]
+ruby_block_parameters_child(
+  int ruby_block_parameters: @ruby_block_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_block_parameters_child_type ref
+);
+
+ruby_block_parameters_def(
+  unique int id: @ruby_block_parameters
+);
+
+@ruby_body_statement_child_type = @ruby_else | @ruby_ensure | @ruby_rescue | @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_body_statement, index]
+ruby_body_statement_child(
+  int ruby_body_statement: @ruby_body_statement ref,
+  int index: int ref,
+  unique int child: @ruby_body_statement_child_type ref
+);
+
+ruby_body_statement_def(
+  unique int id: @ruby_body_statement
+);
+
+ruby_break_child(
+  unique int ruby_break: @ruby_break ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_break_def(
+  unique int id: @ruby_break
+);
+
+ruby_call_arguments(
+  unique int ruby_call: @ruby_call ref,
+  unique int arguments: @ruby_argument_list ref
+);
+
+@ruby_call_block_type = @ruby_block | @ruby_do_block
+
+ruby_call_block(
+  unique int ruby_call: @ruby_call ref,
+  unique int block: @ruby_call_block_type ref
+);
+
+@ruby_call_method_type = @ruby_token_operator | @ruby_underscore_variable
+
+ruby_call_method(
+  unique int ruby_call: @ruby_call ref,
+  unique int method: @ruby_call_method_type ref
+);
+
+ruby_call_operator(
+  unique int ruby_call: @ruby_call ref,
+  unique int operator: @ruby_underscore_call_operator ref
+);
+
+ruby_call_receiver(
+  unique int ruby_call: @ruby_call ref,
+  unique int receiver: @ruby_underscore_primary ref
+);
+
+ruby_call_def(
+  unique int id: @ruby_call
+);
+
+ruby_case_value(
+  unique int ruby_case__: @ruby_case__ ref,
+  unique int value: @ruby_underscore_statement ref
+);
+
+@ruby_case_child_type = @ruby_else | @ruby_when
+
+#keyset[ruby_case__, index]
+ruby_case_child(
+  int ruby_case__: @ruby_case__ ref,
+  int index: int ref,
+  unique int child: @ruby_case_child_type ref
+);
+
+ruby_case_def(
+  unique int id: @ruby_case__
+);
+
+#keyset[ruby_case_match, index]
+ruby_case_match_clauses(
+  int ruby_case_match: @ruby_case_match ref,
+  int index: int ref,
+  unique int clauses: @ruby_in_clause ref
+);
+
+ruby_case_match_else(
+  unique int ruby_case_match: @ruby_case_match ref,
+  unique int else: @ruby_else ref
+);
+
+ruby_case_match_def(
+  unique int id: @ruby_case_match,
+  int value: @ruby_underscore_statement ref
+);
+
+#keyset[ruby_chained_string, index]
+ruby_chained_string_child(
+  int ruby_chained_string: @ruby_chained_string ref,
+  int index: int ref,
+  unique int child: @ruby_string__ ref
+);
+
+ruby_chained_string_def(
+  unique int id: @ruby_chained_string
+);
+
+ruby_class_body(
+  unique int ruby_class: @ruby_class ref,
+  unique int body: @ruby_body_statement ref
+);
+
+@ruby_class_name_type = @ruby_scope_resolution | @ruby_token_constant
+
+ruby_class_superclass(
+  unique int ruby_class: @ruby_class ref,
+  unique int superclass: @ruby_superclass ref
+);
+
+ruby_class_def(
+  unique int id: @ruby_class,
+  int name: @ruby_class_name_type ref
+);
+
+@ruby_complex_child_type = @ruby_rational | @ruby_token_float | @ruby_token_integer
+
+ruby_complex_def(
+  unique int id: @ruby_complex,
+  int child: @ruby_complex_child_type ref
+);
+
+ruby_conditional_def(
+  unique int id: @ruby_conditional,
+  int alternative: @ruby_underscore_arg ref,
+  int condition: @ruby_underscore_arg ref,
+  int consequence: @ruby_underscore_arg ref
+);
+
+@ruby_delimited_symbol_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_delimited_symbol, index]
+ruby_delimited_symbol_child(
+  int ruby_delimited_symbol: @ruby_delimited_symbol ref,
+  int index: int ref,
+  unique int child: @ruby_delimited_symbol_child_type ref
+);
+
+ruby_delimited_symbol_def(
+  unique int id: @ruby_delimited_symbol
+);
+
+@ruby_destructured_left_assignment_child_type = @ruby_destructured_left_assignment | @ruby_rest_assignment | @ruby_underscore_lhs
+
+#keyset[ruby_destructured_left_assignment, index]
+ruby_destructured_left_assignment_child(
+  int ruby_destructured_left_assignment: @ruby_destructured_left_assignment ref,
+  int index: int ref,
+  unique int child: @ruby_destructured_left_assignment_child_type ref
+);
+
+ruby_destructured_left_assignment_def(
+  unique int id: @ruby_destructured_left_assignment
+);
+
+@ruby_destructured_parameter_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_destructured_parameter, index]
+ruby_destructured_parameter_child(
+  int ruby_destructured_parameter: @ruby_destructured_parameter ref,
+  int index: int ref,
+  unique int child: @ruby_destructured_parameter_child_type ref
+);
+
+ruby_destructured_parameter_def(
+  unique int id: @ruby_destructured_parameter
+);
+
+@ruby_do_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_do, index]
+ruby_do_child(
+  int ruby_do: @ruby_do ref,
+  int index: int ref,
+  unique int child: @ruby_do_child_type ref
+);
+
+ruby_do_def(
+  unique int id: @ruby_do
+);
+
+ruby_do_block_body(
+  unique int ruby_do_block: @ruby_do_block ref,
+  unique int body: @ruby_body_statement ref
+);
+
+ruby_do_block_parameters(
+  unique int ruby_do_block: @ruby_do_block ref,
+  unique int parameters: @ruby_block_parameters ref
+);
+
+ruby_do_block_def(
+  unique int id: @ruby_do_block
+);
+
+@ruby_element_reference_block_type = @ruby_block | @ruby_do_block
+
+ruby_element_reference_block(
+  unique int ruby_element_reference: @ruby_element_reference ref,
+  unique int block: @ruby_element_reference_block_type ref
+);
+
+@ruby_element_reference_child_type = @ruby_block_argument | @ruby_hash_splat_argument | @ruby_pair | @ruby_splat_argument | @ruby_token_forward_argument | @ruby_underscore_expression
+
+#keyset[ruby_element_reference, index]
+ruby_element_reference_child(
+  int ruby_element_reference: @ruby_element_reference ref,
+  int index: int ref,
+  unique int child: @ruby_element_reference_child_type ref
+);
+
+ruby_element_reference_def(
+  unique int id: @ruby_element_reference,
+  int object: @ruby_underscore_primary ref
+);
+
+@ruby_else_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_else, index]
+ruby_else_child(
+  int ruby_else: @ruby_else ref,
+  int index: int ref,
+  unique int child: @ruby_else_child_type ref
+);
+
+ruby_else_def(
+  unique int id: @ruby_else
+);
+
+@ruby_elsif_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_elsif_alternative(
+  unique int ruby_elsif: @ruby_elsif ref,
+  unique int alternative: @ruby_elsif_alternative_type ref
+);
+
+ruby_elsif_consequence(
+  unique int ruby_elsif: @ruby_elsif ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_elsif_def(
+  unique int id: @ruby_elsif,
+  int condition: @ruby_underscore_statement ref
+);
+
+@ruby_end_block_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_end_block, index]
+ruby_end_block_child(
+  int ruby_end_block: @ruby_end_block ref,
+  int index: int ref,
+  unique int child: @ruby_end_block_child_type ref
+);
+
+ruby_end_block_def(
+  unique int id: @ruby_end_block
+);
+
+@ruby_ensure_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_ensure, index]
+ruby_ensure_child(
+  int ruby_ensure: @ruby_ensure ref,
+  int index: int ref,
+  unique int child: @ruby_ensure_child_type ref
+);
+
+ruby_ensure_def(
+  unique int id: @ruby_ensure
+);
+
+ruby_exception_variable_def(
+  unique int id: @ruby_exception_variable,
+  int child: @ruby_underscore_lhs ref
+);
+
+@ruby_exceptions_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+#keyset[ruby_exceptions, index]
+ruby_exceptions_child(
+  int ruby_exceptions: @ruby_exceptions ref,
+  int index: int ref,
+  unique int child: @ruby_exceptions_child_type ref
+);
+
+ruby_exceptions_def(
+  unique int id: @ruby_exceptions
+);
+
+ruby_expression_reference_pattern_def(
+  unique int id: @ruby_expression_reference_pattern,
+  int value: @ruby_underscore_expression ref
+);
+
+ruby_find_pattern_class(
+  unique int ruby_find_pattern: @ruby_find_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_find_pattern_child_type = @ruby_splat_parameter | @ruby_underscore_pattern_expr
+
+#keyset[ruby_find_pattern, index]
+ruby_find_pattern_child(
+  int ruby_find_pattern: @ruby_find_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_find_pattern_child_type ref
+);
+
+ruby_find_pattern_def(
+  unique int id: @ruby_find_pattern
+);
+
+@ruby_for_pattern_type = @ruby_left_assignment_list | @ruby_underscore_lhs
+
+ruby_for_def(
+  unique int id: @ruby_for,
+  int body: @ruby_do ref,
+  int pattern: @ruby_for_pattern_type ref,
+  int value: @ruby_in ref
+);
+
+@ruby_hash_child_type = @ruby_hash_splat_argument | @ruby_pair
+
+#keyset[ruby_hash, index]
+ruby_hash_child(
+  int ruby_hash: @ruby_hash ref,
+  int index: int ref,
+  unique int child: @ruby_hash_child_type ref
+);
+
+ruby_hash_def(
+  unique int id: @ruby_hash
+);
+
+ruby_hash_pattern_class(
+  unique int ruby_hash_pattern: @ruby_hash_pattern ref,
+  unique int class: @ruby_underscore_pattern_constant ref
+);
+
+@ruby_hash_pattern_child_type = @ruby_hash_splat_parameter | @ruby_keyword_pattern | @ruby_token_hash_splat_nil
+
+#keyset[ruby_hash_pattern, index]
+ruby_hash_pattern_child(
+  int ruby_hash_pattern: @ruby_hash_pattern ref,
+  int index: int ref,
+  unique int child: @ruby_hash_pattern_child_type ref
+);
+
+ruby_hash_pattern_def(
+  unique int id: @ruby_hash_pattern
+);
+
+ruby_hash_splat_argument_child(
+  unique int ruby_hash_splat_argument: @ruby_hash_splat_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_hash_splat_argument_def(
+  unique int id: @ruby_hash_splat_argument
+);
+
+ruby_hash_splat_parameter_name(
+  unique int ruby_hash_splat_parameter: @ruby_hash_splat_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_hash_splat_parameter_def(
+  unique int id: @ruby_hash_splat_parameter
+);
+
+@ruby_heredoc_body_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_heredoc_content | @ruby_token_heredoc_end
+
+#keyset[ruby_heredoc_body, index]
+ruby_heredoc_body_child(
+  int ruby_heredoc_body: @ruby_heredoc_body ref,
+  int index: int ref,
+  unique int child: @ruby_heredoc_body_child_type ref
+);
+
+ruby_heredoc_body_def(
+  unique int id: @ruby_heredoc_body
+);
+
+@ruby_if_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_if_alternative(
+  unique int ruby_if: @ruby_if ref,
+  unique int alternative: @ruby_if_alternative_type ref
+);
+
+ruby_if_consequence(
+  unique int ruby_if: @ruby_if ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_if_def(
+  unique int id: @ruby_if,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_if_guard_def(
+  unique int id: @ruby_if_guard,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_if_modifier_def(
+  unique int id: @ruby_if_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_in_def(
+  unique int id: @ruby_in,
+  int child: @ruby_underscore_arg ref
+);
+
+ruby_in_clause_body(
+  unique int ruby_in_clause: @ruby_in_clause ref,
+  unique int body: @ruby_then ref
+);
+
+@ruby_in_clause_guard_type = @ruby_if_guard | @ruby_unless_guard
+
+ruby_in_clause_guard(
+  unique int ruby_in_clause: @ruby_in_clause ref,
+  unique int guard: @ruby_in_clause_guard_type ref
+);
+
+ruby_in_clause_def(
+  unique int id: @ruby_in_clause,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref
+);
+
+@ruby_interpolation_child_type = @ruby_token_empty_statement | @ruby_underscore_nonlocal_variable | @ruby_underscore_statement
+
+#keyset[ruby_interpolation, index]
+ruby_interpolation_child(
+  int ruby_interpolation: @ruby_interpolation ref,
+  int index: int ref,
+  unique int child: @ruby_interpolation_child_type ref
+);
+
+ruby_interpolation_def(
+  unique int id: @ruby_interpolation
+);
+
+ruby_keyword_parameter_value(
+  unique int ruby_keyword_parameter: @ruby_keyword_parameter ref,
+  unique int value: @ruby_underscore_arg ref
+);
+
+ruby_keyword_parameter_def(
+  unique int id: @ruby_keyword_parameter,
+  int name: @ruby_token_identifier ref
+);
+
+@ruby_keyword_pattern_key_type = @ruby_string__ | @ruby_token_hash_key_symbol
+
+ruby_keyword_pattern_value(
+  unique int ruby_keyword_pattern: @ruby_keyword_pattern ref,
+  unique int value: @ruby_underscore_pattern_expr ref
+);
+
+ruby_keyword_pattern_def(
+  unique int id: @ruby_keyword_pattern,
+  int key__: @ruby_keyword_pattern_key_type ref
+);
+
+@ruby_lambda_body_type = @ruby_block | @ruby_do_block
+
+ruby_lambda_parameters(
+  unique int ruby_lambda: @ruby_lambda ref,
+  unique int parameters: @ruby_lambda_parameters ref
+);
+
+ruby_lambda_def(
+  unique int id: @ruby_lambda,
+  int body: @ruby_lambda_body_type ref
+);
+
+@ruby_lambda_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_lambda_parameters, index]
+ruby_lambda_parameters_child(
+  int ruby_lambda_parameters: @ruby_lambda_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_lambda_parameters_child_type ref
+);
+
+ruby_lambda_parameters_def(
+  unique int id: @ruby_lambda_parameters
+);
+
+@ruby_left_assignment_list_child_type = @ruby_destructured_left_assignment | @ruby_rest_assignment | @ruby_underscore_lhs
+
+#keyset[ruby_left_assignment_list, index]
+ruby_left_assignment_list_child(
+  int ruby_left_assignment_list: @ruby_left_assignment_list ref,
+  int index: int ref,
+  unique int child: @ruby_left_assignment_list_child_type ref
+);
+
+ruby_left_assignment_list_def(
+  unique int id: @ruby_left_assignment_list
+);
+
+ruby_match_pattern_def(
+  unique int id: @ruby_match_pattern,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_method_body_type = @ruby_body_statement | @ruby_rescue_modifier | @ruby_underscore_arg
+
+ruby_method_body(
+  unique int ruby_method: @ruby_method ref,
+  unique int body: @ruby_method_body_type ref
+);
+
+ruby_method_parameters(
+  unique int ruby_method: @ruby_method ref,
+  unique int parameters: @ruby_method_parameters ref
+);
+
+ruby_method_def(
+  unique int id: @ruby_method,
+  int name: @ruby_underscore_method_name ref
+);
+
+@ruby_method_parameters_child_type = @ruby_block_parameter | @ruby_destructured_parameter | @ruby_hash_splat_parameter | @ruby_keyword_parameter | @ruby_optional_parameter | @ruby_splat_parameter | @ruby_token_forward_parameter | @ruby_token_hash_splat_nil | @ruby_token_identifier
+
+#keyset[ruby_method_parameters, index]
+ruby_method_parameters_child(
+  int ruby_method_parameters: @ruby_method_parameters ref,
+  int index: int ref,
+  unique int child: @ruby_method_parameters_child_type ref
+);
+
+ruby_method_parameters_def(
+  unique int id: @ruby_method_parameters
+);
+
+ruby_module_body(
+  unique int ruby_module: @ruby_module ref,
+  unique int body: @ruby_body_statement ref
+);
+
+@ruby_module_name_type = @ruby_scope_resolution | @ruby_token_constant
+
+ruby_module_def(
+  unique int id: @ruby_module,
+  int name: @ruby_module_name_type ref
+);
+
+ruby_next_child(
+  unique int ruby_next: @ruby_next ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_next_def(
+  unique int id: @ruby_next
+);
+
+case @ruby_operator_assignment.operator of
+  0 = @ruby_operator_assignment_percentequal
+| 1 = @ruby_operator_assignment_ampersandampersandequal
+| 2 = @ruby_operator_assignment_ampersandequal
+| 3 = @ruby_operator_assignment_starstarequal
+| 4 = @ruby_operator_assignment_starequal
+| 5 = @ruby_operator_assignment_plusequal
+| 6 = @ruby_operator_assignment_minusequal
+| 7 = @ruby_operator_assignment_slashequal
+| 8 = @ruby_operator_assignment_langlelangleequal
+| 9 = @ruby_operator_assignment_ranglerangleequal
+| 10 = @ruby_operator_assignment_caretequal
+| 11 = @ruby_operator_assignment_pipeequal
+| 12 = @ruby_operator_assignment_pipepipeequal
+;
+
+
+@ruby_operator_assignment_right_type = @ruby_rescue_modifier | @ruby_underscore_expression
+
+ruby_operator_assignment_def(
+  unique int id: @ruby_operator_assignment,
+  int left: @ruby_underscore_lhs ref,
+  int operator: int ref,
+  int right: @ruby_operator_assignment_right_type ref
+);
+
+ruby_optional_parameter_def(
+  unique int id: @ruby_optional_parameter,
+  int name: @ruby_token_identifier ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_pair_key_type = @ruby_string__ | @ruby_token_hash_key_symbol | @ruby_underscore_arg
+
+ruby_pair_value(
+  unique int ruby_pair: @ruby_pair ref,
+  unique int value: @ruby_underscore_arg ref
+);
+
+ruby_pair_def(
+  unique int id: @ruby_pair,
+  int key__: @ruby_pair_key_type ref
+);
+
+ruby_parenthesized_pattern_def(
+  unique int id: @ruby_parenthesized_pattern,
+  int child: @ruby_underscore_pattern_expr ref
+);
+
+@ruby_parenthesized_statements_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_parenthesized_statements, index]
+ruby_parenthesized_statements_child(
+  int ruby_parenthesized_statements: @ruby_parenthesized_statements ref,
+  int index: int ref,
+  unique int child: @ruby_parenthesized_statements_child_type ref
+);
+
+ruby_parenthesized_statements_def(
+  unique int id: @ruby_parenthesized_statements
+);
+
+@ruby_pattern_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+ruby_pattern_def(
+  unique int id: @ruby_pattern,
+  int child: @ruby_pattern_child_type ref
+);
+
+@ruby_program_child_type = @ruby_token_empty_statement | @ruby_token_uninterpreted | @ruby_underscore_statement
+
+#keyset[ruby_program, index]
+ruby_program_child(
+  int ruby_program: @ruby_program ref,
+  int index: int ref,
+  unique int child: @ruby_program_child_type ref
+);
+
+ruby_program_def(
+  unique int id: @ruby_program
+);
+
+@ruby_range_begin_type = @ruby_underscore_arg | @ruby_underscore_pattern_primitive
+
+ruby_range_begin(
+  unique int ruby_range: @ruby_range ref,
+  unique int begin: @ruby_range_begin_type ref
+);
+
+@ruby_range_end_type = @ruby_underscore_arg | @ruby_underscore_pattern_primitive
+
+ruby_range_end(
+  unique int ruby_range: @ruby_range ref,
+  unique int end: @ruby_range_end_type ref
+);
+
+case @ruby_range.operator of
+  0 = @ruby_range_dotdot
+| 1 = @ruby_range_dotdotdot
+;
+
+
+ruby_range_def(
+  unique int id: @ruby_range,
+  int operator: int ref
+);
+
+@ruby_rational_child_type = @ruby_token_float | @ruby_token_integer
+
+ruby_rational_def(
+  unique int id: @ruby_rational,
+  int child: @ruby_rational_child_type ref
+);
+
+ruby_redo_child(
+  unique int ruby_redo: @ruby_redo ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_redo_def(
+  unique int id: @ruby_redo
+);
+
+@ruby_regex_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_regex, index]
+ruby_regex_child(
+  int ruby_regex: @ruby_regex ref,
+  int index: int ref,
+  unique int child: @ruby_regex_child_type ref
+);
+
+ruby_regex_def(
+  unique int id: @ruby_regex
+);
+
+ruby_rescue_body(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int body: @ruby_then ref
+);
+
+ruby_rescue_exceptions(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int exceptions: @ruby_exceptions ref
+);
+
+ruby_rescue_variable(
+  unique int ruby_rescue: @ruby_rescue ref,
+  unique int variable: @ruby_exception_variable ref
+);
+
+ruby_rescue_def(
+  unique int id: @ruby_rescue
+);
+
+@ruby_rescue_modifier_body_type = @ruby_underscore_arg | @ruby_underscore_statement
+
+ruby_rescue_modifier_def(
+  unique int id: @ruby_rescue_modifier,
+  int body: @ruby_rescue_modifier_body_type ref,
+  int handler: @ruby_underscore_expression ref
+);
+
+ruby_rest_assignment_child(
+  unique int ruby_rest_assignment: @ruby_rest_assignment ref,
+  unique int child: @ruby_underscore_lhs ref
+);
+
+ruby_rest_assignment_def(
+  unique int id: @ruby_rest_assignment
+);
+
+ruby_retry_child(
+  unique int ruby_retry: @ruby_retry ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_retry_def(
+  unique int id: @ruby_retry
+);
+
+ruby_return_child(
+  unique int ruby_return: @ruby_return ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_return_def(
+  unique int id: @ruby_return
+);
+
+@ruby_right_assignment_list_child_type = @ruby_splat_argument | @ruby_underscore_arg
+
+#keyset[ruby_right_assignment_list, index]
+ruby_right_assignment_list_child(
+  int ruby_right_assignment_list: @ruby_right_assignment_list ref,
+  int index: int ref,
+  unique int child: @ruby_right_assignment_list_child_type ref
+);
+
+ruby_right_assignment_list_def(
+  unique int id: @ruby_right_assignment_list
+);
+
+@ruby_scope_resolution_scope_type = @ruby_underscore_pattern_constant | @ruby_underscore_primary
+
+ruby_scope_resolution_scope(
+  unique int ruby_scope_resolution: @ruby_scope_resolution ref,
+  unique int scope: @ruby_scope_resolution_scope_type ref
+);
+
+ruby_scope_resolution_def(
+  unique int id: @ruby_scope_resolution,
+  int name: @ruby_token_constant ref
+);
+
+ruby_setter_def(
+  unique int id: @ruby_setter,
+  int name: @ruby_token_identifier ref
+);
+
+ruby_singleton_class_body(
+  unique int ruby_singleton_class: @ruby_singleton_class ref,
+  unique int body: @ruby_body_statement ref
+);
+
+ruby_singleton_class_def(
+  unique int id: @ruby_singleton_class,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_singleton_method_body_type = @ruby_body_statement | @ruby_rescue_modifier | @ruby_underscore_arg
+
+ruby_singleton_method_body(
+  unique int ruby_singleton_method: @ruby_singleton_method ref,
+  unique int body: @ruby_singleton_method_body_type ref
+);
+
+@ruby_singleton_method_object_type = @ruby_underscore_arg | @ruby_underscore_variable
+
+ruby_singleton_method_parameters(
+  unique int ruby_singleton_method: @ruby_singleton_method ref,
+  unique int parameters: @ruby_method_parameters ref
+);
+
+ruby_singleton_method_def(
+  unique int id: @ruby_singleton_method,
+  int name: @ruby_underscore_method_name ref,
+  int object: @ruby_singleton_method_object_type ref
+);
+
+ruby_splat_argument_child(
+  unique int ruby_splat_argument: @ruby_splat_argument ref,
+  unique int child: @ruby_underscore_arg ref
+);
+
+ruby_splat_argument_def(
+  unique int id: @ruby_splat_argument
+);
+
+ruby_splat_parameter_name(
+  unique int ruby_splat_parameter: @ruby_splat_parameter ref,
+  unique int name: @ruby_token_identifier ref
+);
+
+ruby_splat_parameter_def(
+  unique int id: @ruby_splat_parameter
+);
+
+@ruby_string_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_string__, index]
+ruby_string_child(
+  int ruby_string__: @ruby_string__ ref,
+  int index: int ref,
+  unique int child: @ruby_string_child_type ref
+);
+
+ruby_string_def(
+  unique int id: @ruby_string__
+);
+
+#keyset[ruby_string_array, index]
+ruby_string_array_child(
+  int ruby_string_array: @ruby_string_array ref,
+  int index: int ref,
+  unique int child: @ruby_bare_string ref
+);
+
+ruby_string_array_def(
+  unique int id: @ruby_string_array
+);
+
+@ruby_subshell_child_type = @ruby_interpolation | @ruby_token_escape_sequence | @ruby_token_string_content
+
+#keyset[ruby_subshell, index]
+ruby_subshell_child(
+  int ruby_subshell: @ruby_subshell ref,
+  int index: int ref,
+  unique int child: @ruby_subshell_child_type ref
+);
+
+ruby_subshell_def(
+  unique int id: @ruby_subshell
+);
+
+ruby_superclass_def(
+  unique int id: @ruby_superclass,
+  int child: @ruby_underscore_expression ref
+);
+
+#keyset[ruby_symbol_array, index]
+ruby_symbol_array_child(
+  int ruby_symbol_array: @ruby_symbol_array ref,
+  int index: int ref,
+  unique int child: @ruby_bare_symbol ref
+);
+
+ruby_symbol_array_def(
+  unique int id: @ruby_symbol_array
+);
+
+ruby_test_pattern_def(
+  unique int id: @ruby_test_pattern,
+  int pattern: @ruby_underscore_pattern_top_expr_body ref,
+  int value: @ruby_underscore_arg ref
+);
+
+@ruby_then_child_type = @ruby_token_empty_statement | @ruby_underscore_statement
+
+#keyset[ruby_then, index]
+ruby_then_child(
+  int ruby_then: @ruby_then ref,
+  int index: int ref,
+  unique int child: @ruby_then_child_type ref
+);
+
+ruby_then_def(
+  unique int id: @ruby_then
+);
+
+@ruby_unary_operand_type = @ruby_parenthesized_statements | @ruby_underscore_expression | @ruby_underscore_simple_numeric
+
+case @ruby_unary.operator of
+  0 = @ruby_unary_bang
+| 1 = @ruby_unary_plus
+| 2 = @ruby_unary_minus
+| 3 = @ruby_unary_definedquestion
+| 4 = @ruby_unary_not
+| 5 = @ruby_unary_tilde
+;
+
+
+ruby_unary_def(
+  unique int id: @ruby_unary,
+  int operand: @ruby_unary_operand_type ref,
+  int operator: int ref
+);
+
+#keyset[ruby_undef, index]
+ruby_undef_child(
+  int ruby_undef: @ruby_undef ref,
+  int index: int ref,
+  unique int child: @ruby_underscore_method_name ref
+);
+
+ruby_undef_def(
+  unique int id: @ruby_undef
+);
+
+@ruby_unless_alternative_type = @ruby_else | @ruby_elsif
+
+ruby_unless_alternative(
+  unique int ruby_unless: @ruby_unless ref,
+  unique int alternative: @ruby_unless_alternative_type ref
+);
+
+ruby_unless_consequence(
+  unique int ruby_unless: @ruby_unless ref,
+  unique int consequence: @ruby_then ref
+);
+
+ruby_unless_def(
+  unique int id: @ruby_unless,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_unless_guard_def(
+  unique int id: @ruby_unless_guard,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_unless_modifier_def(
+  unique int id: @ruby_unless_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_until_def(
+  unique int id: @ruby_until,
+  int body: @ruby_do ref,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_until_modifier_def(
+  unique int id: @ruby_until_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+@ruby_variable_reference_pattern_name_type = @ruby_token_identifier | @ruby_underscore_nonlocal_variable
+
+ruby_variable_reference_pattern_def(
+  unique int id: @ruby_variable_reference_pattern,
+  int name: @ruby_variable_reference_pattern_name_type ref
+);
+
+ruby_when_body(
+  unique int ruby_when: @ruby_when ref,
+  unique int body: @ruby_then ref
+);
+
+#keyset[ruby_when, index]
+ruby_when_pattern(
+  int ruby_when: @ruby_when ref,
+  int index: int ref,
+  unique int pattern: @ruby_pattern ref
+);
+
+ruby_when_def(
+  unique int id: @ruby_when
+);
+
+ruby_while_def(
+  unique int id: @ruby_while,
+  int body: @ruby_do ref,
+  int condition: @ruby_underscore_statement ref
+);
+
+ruby_while_modifier_def(
+  unique int id: @ruby_while_modifier,
+  int body: @ruby_underscore_statement ref,
+  int condition: @ruby_underscore_expression ref
+);
+
+ruby_yield_child(
+  unique int ruby_yield: @ruby_yield ref,
+  unique int child: @ruby_argument_list ref
+);
+
+ruby_yield_def(
+  unique int id: @ruby_yield
+);
+
+ruby_tokeninfo(
+  unique int id: @ruby_token,
+  int kind: int ref,
+  string value: string ref
+);
+
+case @ruby_token.kind of
+  0 = @ruby_reserved_word
+| 1 = @ruby_token_character
+| 2 = @ruby_token_class_variable
+| 3 = @ruby_token_comment
+| 4 = @ruby_token_constant
+| 5 = @ruby_token_empty_statement
+| 6 = @ruby_token_encoding
+| 7 = @ruby_token_escape_sequence
+| 8 = @ruby_token_false
+| 9 = @ruby_token_file
+| 10 = @ruby_token_float
+| 11 = @ruby_token_forward_argument
+| 12 = @ruby_token_forward_parameter
+| 13 = @ruby_token_global_variable
+| 14 = @ruby_token_hash_key_symbol
+| 15 = @ruby_token_hash_splat_nil
+| 16 = @ruby_token_heredoc_beginning
+| 17 = @ruby_token_heredoc_content
+| 18 = @ruby_token_heredoc_end
+| 19 = @ruby_token_identifier
+| 20 = @ruby_token_instance_variable
+| 21 = @ruby_token_integer
+| 22 = @ruby_token_line
+| 23 = @ruby_token_nil
+| 24 = @ruby_token_operator
+| 25 = @ruby_token_self
+| 26 = @ruby_token_simple_symbol
+| 27 = @ruby_token_string_content
+| 28 = @ruby_token_super
+| 29 = @ruby_token_true
+| 30 = @ruby_token_uninterpreted
+;
+
+
+@ruby_ast_node = @ruby_alias | @ruby_alternative_pattern | @ruby_argument_list | @ruby_array | @ruby_array_pattern | @ruby_as_pattern | @ruby_assignment | @ruby_bare_string | @ruby_bare_symbol | @ruby_begin | @ruby_begin_block | @ruby_binary | @ruby_block | @ruby_block_argument | @ruby_block_body | @ruby_block_parameter | @ruby_block_parameters | @ruby_body_statement | @ruby_break | @ruby_call | @ruby_case__ | @ruby_case_match | @ruby_chained_string | @ruby_class | @ruby_complex | @ruby_conditional | @ruby_delimited_symbol | @ruby_destructured_left_assignment | @ruby_destructured_parameter | @ruby_do | @ruby_do_block | @ruby_element_reference | @ruby_else | @ruby_elsif | @ruby_end_block | @ruby_ensure | @ruby_exception_variable | @ruby_exceptions | @ruby_expression_reference_pattern | @ruby_find_pattern | @ruby_for | @ruby_hash | @ruby_hash_pattern | @ruby_hash_splat_argument | @ruby_hash_splat_parameter | @ruby_heredoc_body | @ruby_if | @ruby_if_guard | @ruby_if_modifier | @ruby_in | @ruby_in_clause | @ruby_interpolation | @ruby_keyword_parameter | @ruby_keyword_pattern | @ruby_lambda | @ruby_lambda_parameters | @ruby_left_assignment_list | @ruby_match_pattern | @ruby_method | @ruby_method_parameters | @ruby_module | @ruby_next | @ruby_operator_assignment | @ruby_optional_parameter | @ruby_pair | @ruby_parenthesized_pattern | @ruby_parenthesized_statements | @ruby_pattern | @ruby_program | @ruby_range | @ruby_rational | @ruby_redo | @ruby_regex | @ruby_rescue | @ruby_rescue_modifier | @ruby_rest_assignment | @ruby_retry | @ruby_return | @ruby_right_assignment_list | @ruby_scope_resolution | @ruby_setter | @ruby_singleton_class | @ruby_singleton_method | @ruby_splat_argument | @ruby_splat_parameter | @ruby_string__ | @ruby_string_array | @ruby_subshell | @ruby_superclass | @ruby_symbol_array | @ruby_test_pattern | @ruby_then | @ruby_token | @ruby_unary | @ruby_undef | @ruby_unless | @ruby_unless_guard | @ruby_unless_modifier | @ruby_until | @ruby_until_modifier | @ruby_variable_reference_pattern | @ruby_when | @ruby_while | @ruby_while_modifier | @ruby_yield
+
+ruby_ast_node_location(
+  unique int node: @ruby_ast_node ref,
+  int loc: @location_default ref
+);
+
+#keyset[parent, parent_index]
+ruby_ast_node_parent(
+  unique int node: @ruby_ast_node ref,
+  int parent: @ruby_ast_node ref,
+  int parent_index: int ref
+);
+
+/*- Erb dbscheme -*/
+erb_comment_directive_child(
+  unique int erb_comment_directive: @erb_comment_directive ref,
+  unique int child: @erb_token_comment ref
+);
+
+erb_comment_directive_def(
+  unique int id: @erb_comment_directive
+);
+
+erb_directive_child(
+  unique int erb_directive: @erb_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_directive_def(
+  unique int id: @erb_directive
+);
+
+erb_graphql_directive_child(
+  unique int erb_graphql_directive: @erb_graphql_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_graphql_directive_def(
+  unique int id: @erb_graphql_directive
+);
+
+erb_output_directive_child(
+  unique int erb_output_directive: @erb_output_directive ref,
+  unique int child: @erb_token_code ref
+);
+
+erb_output_directive_def(
+  unique int id: @erb_output_directive
+);
+
+@erb_template_child_type = @erb_comment_directive | @erb_directive | @erb_graphql_directive | @erb_output_directive | @erb_token_content
+
+#keyset[erb_template, index]
+erb_template_child(
+  int erb_template: @erb_template ref,
+  int index: int ref,
+  unique int child: @erb_template_child_type ref
+);
+
+erb_template_def(
+  unique int id: @erb_template
+);
+
+erb_tokeninfo(
+  unique int id: @erb_token,
+  int kind: int ref,
+  string value: string ref
+);
+
+case @erb_token.kind of
+  0 = @erb_reserved_word
+| 1 = @erb_token_code
+| 2 = @erb_token_comment
+| 3 = @erb_token_content
+;
+
+
+@erb_ast_node = @erb_comment_directive | @erb_directive | @erb_graphql_directive | @erb_output_directive | @erb_template | @erb_token
+
+erb_ast_node_location(
+  unique int node: @erb_ast_node ref,
+  int loc: @location_default ref
+);
+
+#keyset[parent, parent_index]
+erb_ast_node_parent(
+  unique int node: @erb_ast_node ref,
+  int parent: @erb_ast_node ref,
+  int parent_index: int ref
+);
+
diff --git a/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/upgrade.properties b/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/ruby/ql/lib/upgrades/eae6926f5000373d5eb1d82131e1ff6152b67b2c/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/rust/downgrades/66a489863649185f4a9770f894505803059a1312/old.dbscheme b/rust/downgrades/66a489863649185f4a9770f894505803059a1312/old.dbscheme
new file mode 100644
index 000000000000..66a489863649
--- /dev/null
+++ b/rust/downgrades/66a489863649185f4a9770f894505803059a1312/old.dbscheme
@@ -0,0 +1,3556 @@
+// generated by codegen, do not edit
+
+// from ../shared/tree-sitter-extractor/src/generator/prefix.dbscheme
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Empty location -*/
+
+empty_location(
+  int location: @location_default ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- Diagnostic messages: severity -*/
+
+case @diagnostic.severity of
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
+;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+
+// from prefix.dbscheme
+#keyset[id]
+locatable_locations(
+  int id: @locatable ref,
+  int location: @location_default ref
+);
+
+
+// from schema
+
+@element =
+  @extractor_step
+| @locatable
+| @named_crate
+| @unextracted
+;
+
+extractor_steps(
+  unique int id: @extractor_step,
+  string action: string ref,
+  int duration_ms: int ref
+);
+
+#keyset[id]
+extractor_step_files(
+  int id: @extractor_step ref,
+  int file: @file ref
+);
+
+@locatable =
+  @ast_node
+| @crate
+;
+
+named_crates(
+  unique int id: @named_crate,
+  string name: string ref,
+  int crate: @crate ref
+);
+
+@unextracted =
+  @missing
+| @unimplemented
+;
+
+@ast_node =
+  @abi
+| @addressable
+| @arg_list
+| @asm_dir_spec
+| @asm_operand
+| @asm_operand_expr
+| @asm_option
+| @asm_piece
+| @asm_reg_spec
+| @assoc_item_list
+| @attr
+| @callable
+| @expr
+| @extern_item_list
+| @field_list
+| @for_binder
+| @format_args_arg
+| @generic_arg
+| @generic_arg_list
+| @generic_param
+| @generic_param_list
+| @item_list
+| @label
+| @let_else
+| @macro_items
+| @match_arm
+| @match_arm_list
+| @match_guard
+| @meta
+| @name
+| @param_base
+| @param_list
+| @parenthesized_arg_list
+| @pat
+| @path
+| @path_ast_node
+| @path_segment
+| @rename
+| @ret_type_repr
+| @return_type_syntax
+| @source_file
+| @stmt
+| @stmt_list
+| @struct_expr_field
+| @struct_expr_field_list
+| @struct_field
+| @struct_pat_field
+| @struct_pat_field_list
+| @token
+| @token_tree
+| @tuple_field
+| @type_bound
+| @type_bound_list
+| @type_repr
+| @use_bound_generic_arg
+| @use_bound_generic_args
+| @use_tree
+| @use_tree_list
+| @variant_list
+| @visibility
+| @where_clause
+| @where_pred
+;
+
+crates(
+  unique int id: @crate
+);
+
+#keyset[id]
+crate_names(
+  int id: @crate ref,
+  string name: string ref
+);
+
+#keyset[id]
+crate_versions(
+  int id: @crate ref,
+  string version: string ref
+);
+
+#keyset[id, index]
+crate_cfg_options(
+  int id: @crate ref,
+  int index: int ref,
+  string cfg_option: string ref
+);
+
+#keyset[id, index]
+crate_named_dependencies(
+  int id: @crate ref,
+  int index: int ref,
+  int named_dependency: @named_crate ref
+);
+
+missings(
+  unique int id: @missing
+);
+
+unimplementeds(
+  unique int id: @unimplemented
+);
+
+abis(
+  unique int id: @abi
+);
+
+#keyset[id]
+abi_abi_strings(
+  int id: @abi ref,
+  string abi_string: string ref
+);
+
+@addressable =
+  @item
+| @variant
+;
+
+arg_lists(
+  unique int id: @arg_list
+);
+
+#keyset[id, index]
+arg_list_args(
+  int id: @arg_list ref,
+  int index: int ref,
+  int arg: @expr ref
+);
+
+asm_dir_specs(
+  unique int id: @asm_dir_spec
+);
+
+@asm_operand =
+  @asm_const
+| @asm_label
+| @asm_reg_operand
+| @asm_sym
+;
+
+asm_operand_exprs(
+  unique int id: @asm_operand_expr
+);
+
+#keyset[id]
+asm_operand_expr_in_exprs(
+  int id: @asm_operand_expr ref,
+  int in_expr: @expr ref
+);
+
+#keyset[id]
+asm_operand_expr_out_exprs(
+  int id: @asm_operand_expr ref,
+  int out_expr: @expr ref
+);
+
+asm_options(
+  unique int id: @asm_option
+);
+
+#keyset[id]
+asm_option_is_raw(
+  int id: @asm_option ref
+);
+
+@asm_piece =
+  @asm_clobber_abi
+| @asm_operand_named
+| @asm_options_list
+;
+
+asm_reg_specs(
+  unique int id: @asm_reg_spec
+);
+
+#keyset[id]
+asm_reg_spec_identifiers(
+  int id: @asm_reg_spec ref,
+  int identifier: @name_ref ref
+);
+
+assoc_item_lists(
+  unique int id: @assoc_item_list
+);
+
+#keyset[id, index]
+assoc_item_list_assoc_items(
+  int id: @assoc_item_list ref,
+  int index: int ref,
+  int assoc_item: @assoc_item ref
+);
+
+#keyset[id, index]
+assoc_item_list_attrs(
+  int id: @assoc_item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+attrs(
+  unique int id: @attr
+);
+
+#keyset[id]
+attr_meta(
+  int id: @attr ref,
+  int meta: @meta ref
+);
+
+@callable =
+  @closure_expr
+| @function
+;
+
+#keyset[id]
+callable_param_lists(
+  int id: @callable ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id, index]
+callable_attrs(
+  int id: @callable ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+@expr =
+  @array_expr_internal
+| @asm_expr
+| @await_expr
+| @become_expr
+| @binary_expr
+| @break_expr
+| @call_expr
+| @cast_expr
+| @closure_expr
+| @continue_expr
+| @field_expr
+| @format_args_expr
+| @if_expr
+| @index_expr
+| @labelable_expr
+| @let_expr
+| @literal_expr
+| @macro_expr
+| @match_expr
+| @method_call_expr
+| @offset_of_expr
+| @paren_expr
+| @path_expr_base
+| @prefix_expr
+| @range_expr
+| @ref_expr
+| @return_expr
+| @struct_expr
+| @try_expr
+| @tuple_expr
+| @underscore_expr
+| @yeet_expr
+| @yield_expr
+;
+
+extern_item_lists(
+  unique int id: @extern_item_list
+);
+
+#keyset[id, index]
+extern_item_list_attrs(
+  int id: @extern_item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+extern_item_list_extern_items(
+  int id: @extern_item_list ref,
+  int index: int ref,
+  int extern_item: @extern_item ref
+);
+
+@field_list =
+  @struct_field_list
+| @tuple_field_list
+;
+
+for_binders(
+  unique int id: @for_binder
+);
+
+#keyset[id]
+for_binder_generic_param_lists(
+  int id: @for_binder ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+format_args_args(
+  unique int id: @format_args_arg
+);
+
+#keyset[id]
+format_args_arg_exprs(
+  int id: @format_args_arg ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+format_args_arg_names(
+  int id: @format_args_arg ref,
+  int name: @name ref
+);
+
+@generic_arg =
+  @assoc_type_arg
+| @const_arg
+| @lifetime_arg
+| @type_arg
+;
+
+generic_arg_lists(
+  unique int id: @generic_arg_list
+);
+
+#keyset[id, index]
+generic_arg_list_generic_args(
+  int id: @generic_arg_list ref,
+  int index: int ref,
+  int generic_arg: @generic_arg ref
+);
+
+@generic_param =
+  @const_param
+| @lifetime_param
+| @type_param
+;
+
+generic_param_lists(
+  unique int id: @generic_param_list
+);
+
+#keyset[id, index]
+generic_param_list_generic_params(
+  int id: @generic_param_list ref,
+  int index: int ref,
+  int generic_param: @generic_param ref
+);
+
+item_lists(
+  unique int id: @item_list
+);
+
+#keyset[id, index]
+item_list_attrs(
+  int id: @item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+item_list_items(
+  int id: @item_list ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+labels(
+  unique int id: @label
+);
+
+#keyset[id]
+label_lifetimes(
+  int id: @label ref,
+  int lifetime: @lifetime ref
+);
+
+let_elses(
+  unique int id: @let_else
+);
+
+#keyset[id]
+let_else_block_exprs(
+  int id: @let_else ref,
+  int block_expr: @block_expr ref
+);
+
+macro_items(
+  unique int id: @macro_items
+);
+
+#keyset[id, index]
+macro_items_items(
+  int id: @macro_items ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+match_arms(
+  unique int id: @match_arm
+);
+
+#keyset[id, index]
+match_arm_attrs(
+  int id: @match_arm ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+match_arm_exprs(
+  int id: @match_arm ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+match_arm_guards(
+  int id: @match_arm ref,
+  int guard: @match_guard ref
+);
+
+#keyset[id]
+match_arm_pats(
+  int id: @match_arm ref,
+  int pat: @pat ref
+);
+
+match_arm_lists(
+  unique int id: @match_arm_list
+);
+
+#keyset[id, index]
+match_arm_list_arms(
+  int id: @match_arm_list ref,
+  int index: int ref,
+  int arm: @match_arm ref
+);
+
+#keyset[id, index]
+match_arm_list_attrs(
+  int id: @match_arm_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+match_guards(
+  unique int id: @match_guard
+);
+
+#keyset[id]
+match_guard_conditions(
+  int id: @match_guard ref,
+  int condition: @expr ref
+);
+
+meta(
+  unique int id: @meta
+);
+
+#keyset[id]
+meta_exprs(
+  int id: @meta ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+meta_is_unsafe(
+  int id: @meta ref
+);
+
+#keyset[id]
+meta_paths(
+  int id: @meta ref,
+  int path: @path ref
+);
+
+#keyset[id]
+meta_token_trees(
+  int id: @meta ref,
+  int token_tree: @token_tree ref
+);
+
+names(
+  unique int id: @name
+);
+
+#keyset[id]
+name_texts(
+  int id: @name ref,
+  string text: string ref
+);
+
+@param_base =
+  @param
+| @self_param
+;
+
+#keyset[id, index]
+param_base_attrs(
+  int id: @param_base ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+param_base_type_reprs(
+  int id: @param_base ref,
+  int type_repr: @type_repr ref
+);
+
+param_lists(
+  unique int id: @param_list
+);
+
+#keyset[id, index]
+param_list_params(
+  int id: @param_list ref,
+  int index: int ref,
+  int param: @param ref
+);
+
+#keyset[id]
+param_list_self_params(
+  int id: @param_list ref,
+  int self_param: @self_param ref
+);
+
+parenthesized_arg_lists(
+  unique int id: @parenthesized_arg_list
+);
+
+#keyset[id, index]
+parenthesized_arg_list_type_args(
+  int id: @parenthesized_arg_list ref,
+  int index: int ref,
+  int type_arg: @type_arg ref
+);
+
+@pat =
+  @box_pat
+| @const_block_pat
+| @ident_pat
+| @literal_pat
+| @macro_pat
+| @or_pat
+| @paren_pat
+| @path_pat
+| @range_pat
+| @ref_pat
+| @rest_pat
+| @slice_pat
+| @struct_pat
+| @tuple_pat
+| @tuple_struct_pat
+| @wildcard_pat
+;
+
+paths(
+  unique int id: @path
+);
+
+#keyset[id]
+path_qualifiers(
+  int id: @path ref,
+  int qualifier: @path ref
+);
+
+#keyset[id]
+path_segments_(
+  int id: @path ref,
+  int segment: @path_segment ref
+);
+
+@path_ast_node =
+  @path_expr
+| @path_pat
+| @struct_expr
+| @struct_pat
+| @tuple_struct_pat
+;
+
+#keyset[id]
+path_ast_node_paths(
+  int id: @path_ast_node ref,
+  int path: @path ref
+);
+
+path_segments(
+  unique int id: @path_segment
+);
+
+#keyset[id]
+path_segment_generic_arg_lists(
+  int id: @path_segment ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+path_segment_identifiers(
+  int id: @path_segment ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+path_segment_parenthesized_arg_lists(
+  int id: @path_segment ref,
+  int parenthesized_arg_list: @parenthesized_arg_list ref
+);
+
+#keyset[id]
+path_segment_ret_types(
+  int id: @path_segment ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+path_segment_return_type_syntaxes(
+  int id: @path_segment ref,
+  int return_type_syntax: @return_type_syntax ref
+);
+
+#keyset[id]
+path_segment_type_reprs(
+  int id: @path_segment ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+path_segment_trait_type_reprs(
+  int id: @path_segment ref,
+  int trait_type_repr: @path_type_repr ref
+);
+
+renames(
+  unique int id: @rename
+);
+
+#keyset[id]
+rename_names(
+  int id: @rename ref,
+  int name: @name ref
+);
+
+ret_type_reprs(
+  unique int id: @ret_type_repr
+);
+
+#keyset[id]
+ret_type_repr_type_reprs(
+  int id: @ret_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+return_type_syntaxes(
+  unique int id: @return_type_syntax
+);
+
+source_files(
+  unique int id: @source_file
+);
+
+#keyset[id, index]
+source_file_attrs(
+  int id: @source_file ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+source_file_items(
+  int id: @source_file ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+@stmt =
+  @expr_stmt
+| @item
+| @let_stmt
+;
+
+stmt_lists(
+  unique int id: @stmt_list
+);
+
+#keyset[id, index]
+stmt_list_attrs(
+  int id: @stmt_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+stmt_list_statements(
+  int id: @stmt_list ref,
+  int index: int ref,
+  int statement: @stmt ref
+);
+
+#keyset[id]
+stmt_list_tail_exprs(
+  int id: @stmt_list ref,
+  int tail_expr: @expr ref
+);
+
+struct_expr_fields(
+  unique int id: @struct_expr_field
+);
+
+#keyset[id, index]
+struct_expr_field_attrs(
+  int id: @struct_expr_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_expr_field_exprs(
+  int id: @struct_expr_field ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+struct_expr_field_identifiers(
+  int id: @struct_expr_field ref,
+  int identifier: @name_ref ref
+);
+
+struct_expr_field_lists(
+  unique int id: @struct_expr_field_list
+);
+
+#keyset[id, index]
+struct_expr_field_list_attrs(
+  int id: @struct_expr_field_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+struct_expr_field_list_fields(
+  int id: @struct_expr_field_list ref,
+  int index: int ref,
+  int field: @struct_expr_field ref
+);
+
+#keyset[id]
+struct_expr_field_list_spreads(
+  int id: @struct_expr_field_list ref,
+  int spread: @expr ref
+);
+
+struct_fields(
+  unique int id: @struct_field
+);
+
+#keyset[id, index]
+struct_field_attrs(
+  int id: @struct_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_field_defaults(
+  int id: @struct_field ref,
+  int default: @expr ref
+);
+
+#keyset[id]
+struct_field_is_unsafe(
+  int id: @struct_field ref
+);
+
+#keyset[id]
+struct_field_names(
+  int id: @struct_field ref,
+  int name: @name ref
+);
+
+#keyset[id]
+struct_field_type_reprs(
+  int id: @struct_field ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+struct_field_visibilities(
+  int id: @struct_field ref,
+  int visibility: @visibility ref
+);
+
+struct_pat_fields(
+  unique int id: @struct_pat_field
+);
+
+#keyset[id, index]
+struct_pat_field_attrs(
+  int id: @struct_pat_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_pat_field_identifiers(
+  int id: @struct_pat_field ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+struct_pat_field_pats(
+  int id: @struct_pat_field ref,
+  int pat: @pat ref
+);
+
+struct_pat_field_lists(
+  unique int id: @struct_pat_field_list
+);
+
+#keyset[id, index]
+struct_pat_field_list_fields(
+  int id: @struct_pat_field_list ref,
+  int index: int ref,
+  int field: @struct_pat_field ref
+);
+
+#keyset[id]
+struct_pat_field_list_rest_pats(
+  int id: @struct_pat_field_list ref,
+  int rest_pat: @rest_pat ref
+);
+
+@token =
+  @comment
+;
+
+token_trees(
+  unique int id: @token_tree
+);
+
+tuple_fields(
+  unique int id: @tuple_field
+);
+
+#keyset[id, index]
+tuple_field_attrs(
+  int id: @tuple_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+tuple_field_type_reprs(
+  int id: @tuple_field ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+tuple_field_visibilities(
+  int id: @tuple_field ref,
+  int visibility: @visibility ref
+);
+
+type_bounds(
+  unique int id: @type_bound
+);
+
+#keyset[id]
+type_bound_for_binders(
+  int id: @type_bound ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+type_bound_is_async(
+  int id: @type_bound ref
+);
+
+#keyset[id]
+type_bound_is_const(
+  int id: @type_bound ref
+);
+
+#keyset[id]
+type_bound_lifetimes(
+  int id: @type_bound ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+type_bound_type_reprs(
+  int id: @type_bound ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+type_bound_use_bound_generic_args(
+  int id: @type_bound ref,
+  int use_bound_generic_args: @use_bound_generic_args ref
+);
+
+type_bound_lists(
+  unique int id: @type_bound_list
+);
+
+#keyset[id, index]
+type_bound_list_bounds(
+  int id: @type_bound_list ref,
+  int index: int ref,
+  int bound: @type_bound ref
+);
+
+@type_repr =
+  @array_type_repr
+| @dyn_trait_type_repr
+| @fn_ptr_type_repr
+| @for_type_repr
+| @impl_trait_type_repr
+| @infer_type_repr
+| @macro_type_repr
+| @never_type_repr
+| @paren_type_repr
+| @path_type_repr
+| @ptr_type_repr
+| @ref_type_repr
+| @slice_type_repr
+| @tuple_type_repr
+;
+
+@use_bound_generic_arg =
+  @lifetime
+| @name_ref
+;
+
+use_bound_generic_args(
+  unique int id: @use_bound_generic_args
+);
+
+#keyset[id, index]
+use_bound_generic_args_use_bound_generic_args(
+  int id: @use_bound_generic_args ref,
+  int index: int ref,
+  int use_bound_generic_arg: @use_bound_generic_arg ref
+);
+
+use_trees(
+  unique int id: @use_tree
+);
+
+#keyset[id]
+use_tree_is_glob(
+  int id: @use_tree ref
+);
+
+#keyset[id]
+use_tree_paths(
+  int id: @use_tree ref,
+  int path: @path ref
+);
+
+#keyset[id]
+use_tree_renames(
+  int id: @use_tree ref,
+  int rename: @rename ref
+);
+
+#keyset[id]
+use_tree_use_tree_lists(
+  int id: @use_tree ref,
+  int use_tree_list: @use_tree_list ref
+);
+
+use_tree_lists(
+  unique int id: @use_tree_list
+);
+
+#keyset[id, index]
+use_tree_list_use_trees(
+  int id: @use_tree_list ref,
+  int index: int ref,
+  int use_tree: @use_tree ref
+);
+
+variant_lists(
+  unique int id: @variant_list
+);
+
+#keyset[id, index]
+variant_list_variants(
+  int id: @variant_list ref,
+  int index: int ref,
+  int variant: @variant ref
+);
+
+visibilities(
+  unique int id: @visibility
+);
+
+#keyset[id]
+visibility_paths(
+  int id: @visibility ref,
+  int path: @path ref
+);
+
+where_clauses(
+  unique int id: @where_clause
+);
+
+#keyset[id, index]
+where_clause_predicates(
+  int id: @where_clause ref,
+  int index: int ref,
+  int predicate: @where_pred ref
+);
+
+where_preds(
+  unique int id: @where_pred
+);
+
+#keyset[id]
+where_pred_for_binders(
+  int id: @where_pred ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+where_pred_lifetimes(
+  int id: @where_pred ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+where_pred_type_reprs(
+  int id: @where_pred ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+where_pred_type_bound_lists(
+  int id: @where_pred ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+array_expr_internals(
+  unique int id: @array_expr_internal
+);
+
+#keyset[id, index]
+array_expr_internal_attrs(
+  int id: @array_expr_internal ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+array_expr_internal_exprs(
+  int id: @array_expr_internal ref,
+  int index: int ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+array_expr_internal_is_semicolon(
+  int id: @array_expr_internal ref
+);
+
+array_type_reprs(
+  unique int id: @array_type_repr
+);
+
+#keyset[id]
+array_type_repr_const_args(
+  int id: @array_type_repr ref,
+  int const_arg: @const_arg ref
+);
+
+#keyset[id]
+array_type_repr_element_type_reprs(
+  int id: @array_type_repr ref,
+  int element_type_repr: @type_repr ref
+);
+
+asm_clobber_abis(
+  unique int id: @asm_clobber_abi
+);
+
+asm_consts(
+  unique int id: @asm_const
+);
+
+#keyset[id]
+asm_const_exprs(
+  int id: @asm_const ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+asm_const_is_const(
+  int id: @asm_const ref
+);
+
+asm_labels(
+  unique int id: @asm_label
+);
+
+#keyset[id]
+asm_label_block_exprs(
+  int id: @asm_label ref,
+  int block_expr: @block_expr ref
+);
+
+asm_operand_nameds(
+  unique int id: @asm_operand_named
+);
+
+#keyset[id]
+asm_operand_named_asm_operands(
+  int id: @asm_operand_named ref,
+  int asm_operand: @asm_operand ref
+);
+
+#keyset[id]
+asm_operand_named_names(
+  int id: @asm_operand_named ref,
+  int name: @name ref
+);
+
+asm_options_lists(
+  unique int id: @asm_options_list
+);
+
+#keyset[id, index]
+asm_options_list_asm_options(
+  int id: @asm_options_list ref,
+  int index: int ref,
+  int asm_option: @asm_option ref
+);
+
+asm_reg_operands(
+  unique int id: @asm_reg_operand
+);
+
+#keyset[id]
+asm_reg_operand_asm_dir_specs(
+  int id: @asm_reg_operand ref,
+  int asm_dir_spec: @asm_dir_spec ref
+);
+
+#keyset[id]
+asm_reg_operand_asm_operand_exprs(
+  int id: @asm_reg_operand ref,
+  int asm_operand_expr: @asm_operand_expr ref
+);
+
+#keyset[id]
+asm_reg_operand_asm_reg_specs(
+  int id: @asm_reg_operand ref,
+  int asm_reg_spec: @asm_reg_spec ref
+);
+
+asm_syms(
+  unique int id: @asm_sym
+);
+
+#keyset[id]
+asm_sym_paths(
+  int id: @asm_sym ref,
+  int path: @path ref
+);
+
+assoc_type_args(
+  unique int id: @assoc_type_arg
+);
+
+#keyset[id]
+assoc_type_arg_const_args(
+  int id: @assoc_type_arg ref,
+  int const_arg: @const_arg ref
+);
+
+#keyset[id]
+assoc_type_arg_generic_arg_lists(
+  int id: @assoc_type_arg ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+assoc_type_arg_identifiers(
+  int id: @assoc_type_arg ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+assoc_type_arg_param_lists(
+  int id: @assoc_type_arg ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id]
+assoc_type_arg_ret_types(
+  int id: @assoc_type_arg ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+assoc_type_arg_return_type_syntaxes(
+  int id: @assoc_type_arg ref,
+  int return_type_syntax: @return_type_syntax ref
+);
+
+#keyset[id]
+assoc_type_arg_type_reprs(
+  int id: @assoc_type_arg ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+assoc_type_arg_type_bound_lists(
+  int id: @assoc_type_arg ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+await_exprs(
+  unique int id: @await_expr
+);
+
+#keyset[id, index]
+await_expr_attrs(
+  int id: @await_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+await_expr_exprs(
+  int id: @await_expr ref,
+  int expr: @expr ref
+);
+
+become_exprs(
+  unique int id: @become_expr
+);
+
+#keyset[id, index]
+become_expr_attrs(
+  int id: @become_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+become_expr_exprs(
+  int id: @become_expr ref,
+  int expr: @expr ref
+);
+
+binary_exprs(
+  unique int id: @binary_expr
+);
+
+#keyset[id, index]
+binary_expr_attrs(
+  int id: @binary_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+binary_expr_lhs(
+  int id: @binary_expr ref,
+  int lhs: @expr ref
+);
+
+#keyset[id]
+binary_expr_operator_names(
+  int id: @binary_expr ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+binary_expr_rhs(
+  int id: @binary_expr ref,
+  int rhs: @expr ref
+);
+
+box_pats(
+  unique int id: @box_pat
+);
+
+#keyset[id]
+box_pat_pats(
+  int id: @box_pat ref,
+  int pat: @pat ref
+);
+
+break_exprs(
+  unique int id: @break_expr
+);
+
+#keyset[id, index]
+break_expr_attrs(
+  int id: @break_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+break_expr_exprs(
+  int id: @break_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+break_expr_lifetimes(
+  int id: @break_expr ref,
+  int lifetime: @lifetime ref
+);
+
+call_exprs(
+  unique int id: @call_expr
+);
+
+#keyset[id]
+call_expr_arg_lists(
+  int id: @call_expr ref,
+  int arg_list: @arg_list ref
+);
+
+#keyset[id, index]
+call_expr_attrs(
+  int id: @call_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+call_expr_functions(
+  int id: @call_expr ref,
+  int function: @expr ref
+);
+
+cast_exprs(
+  unique int id: @cast_expr
+);
+
+#keyset[id, index]
+cast_expr_attrs(
+  int id: @cast_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+cast_expr_exprs(
+  int id: @cast_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+cast_expr_type_reprs(
+  int id: @cast_expr ref,
+  int type_repr: @type_repr ref
+);
+
+closure_exprs(
+  unique int id: @closure_expr
+);
+
+#keyset[id]
+closure_expr_closure_bodies(
+  int id: @closure_expr ref,
+  int closure_body: @expr ref
+);
+
+#keyset[id]
+closure_expr_for_binders(
+  int id: @closure_expr ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+closure_expr_is_async(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_const(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_gen(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_move(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_static(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_ret_types(
+  int id: @closure_expr ref,
+  int ret_type: @ret_type_repr ref
+);
+
+comments(
+  unique int id: @comment,
+  int parent: @ast_node ref,
+  string text: string ref
+);
+
+const_args(
+  unique int id: @const_arg
+);
+
+#keyset[id]
+const_arg_exprs(
+  int id: @const_arg ref,
+  int expr: @expr ref
+);
+
+const_block_pats(
+  unique int id: @const_block_pat
+);
+
+#keyset[id]
+const_block_pat_block_exprs(
+  int id: @const_block_pat ref,
+  int block_expr: @block_expr ref
+);
+
+#keyset[id]
+const_block_pat_is_const(
+  int id: @const_block_pat ref
+);
+
+const_params(
+  unique int id: @const_param
+);
+
+#keyset[id, index]
+const_param_attrs(
+  int id: @const_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+const_param_default_vals(
+  int id: @const_param ref,
+  int default_val: @const_arg ref
+);
+
+#keyset[id]
+const_param_is_const(
+  int id: @const_param ref
+);
+
+#keyset[id]
+const_param_names(
+  int id: @const_param ref,
+  int name: @name ref
+);
+
+#keyset[id]
+const_param_type_reprs(
+  int id: @const_param ref,
+  int type_repr: @type_repr ref
+);
+
+continue_exprs(
+  unique int id: @continue_expr
+);
+
+#keyset[id, index]
+continue_expr_attrs(
+  int id: @continue_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+continue_expr_lifetimes(
+  int id: @continue_expr ref,
+  int lifetime: @lifetime ref
+);
+
+dyn_trait_type_reprs(
+  unique int id: @dyn_trait_type_repr
+);
+
+#keyset[id]
+dyn_trait_type_repr_type_bound_lists(
+  int id: @dyn_trait_type_repr ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+expr_stmts(
+  unique int id: @expr_stmt
+);
+
+#keyset[id]
+expr_stmt_exprs(
+  int id: @expr_stmt ref,
+  int expr: @expr ref
+);
+
+field_exprs(
+  unique int id: @field_expr
+);
+
+#keyset[id, index]
+field_expr_attrs(
+  int id: @field_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+field_expr_containers(
+  int id: @field_expr ref,
+  int container: @expr ref
+);
+
+#keyset[id]
+field_expr_identifiers(
+  int id: @field_expr ref,
+  int identifier: @name_ref ref
+);
+
+fn_ptr_type_reprs(
+  unique int id: @fn_ptr_type_repr
+);
+
+#keyset[id]
+fn_ptr_type_repr_abis(
+  int id: @fn_ptr_type_repr ref,
+  int abi: @abi ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_async(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_const(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_unsafe(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_param_lists(
+  int id: @fn_ptr_type_repr ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_ret_types(
+  int id: @fn_ptr_type_repr ref,
+  int ret_type: @ret_type_repr ref
+);
+
+for_type_reprs(
+  unique int id: @for_type_repr
+);
+
+#keyset[id]
+for_type_repr_for_binders(
+  int id: @for_type_repr ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+for_type_repr_type_reprs(
+  int id: @for_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+format_args_exprs(
+  unique int id: @format_args_expr
+);
+
+#keyset[id, index]
+format_args_expr_args(
+  int id: @format_args_expr ref,
+  int index: int ref,
+  int arg: @format_args_arg ref
+);
+
+#keyset[id, index]
+format_args_expr_attrs(
+  int id: @format_args_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+format_args_expr_templates(
+  int id: @format_args_expr ref,
+  int template: @expr ref
+);
+
+ident_pats(
+  unique int id: @ident_pat
+);
+
+#keyset[id, index]
+ident_pat_attrs(
+  int id: @ident_pat ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+ident_pat_is_mut(
+  int id: @ident_pat ref
+);
+
+#keyset[id]
+ident_pat_is_ref(
+  int id: @ident_pat ref
+);
+
+#keyset[id]
+ident_pat_names(
+  int id: @ident_pat ref,
+  int name: @name ref
+);
+
+#keyset[id]
+ident_pat_pats(
+  int id: @ident_pat ref,
+  int pat: @pat ref
+);
+
+if_exprs(
+  unique int id: @if_expr
+);
+
+#keyset[id, index]
+if_expr_attrs(
+  int id: @if_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+if_expr_conditions(
+  int id: @if_expr ref,
+  int condition: @expr ref
+);
+
+#keyset[id]
+if_expr_elses(
+  int id: @if_expr ref,
+  int else: @expr ref
+);
+
+#keyset[id]
+if_expr_thens(
+  int id: @if_expr ref,
+  int then: @block_expr ref
+);
+
+impl_trait_type_reprs(
+  unique int id: @impl_trait_type_repr
+);
+
+#keyset[id]
+impl_trait_type_repr_type_bound_lists(
+  int id: @impl_trait_type_repr ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+index_exprs(
+  unique int id: @index_expr
+);
+
+#keyset[id, index]
+index_expr_attrs(
+  int id: @index_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+index_expr_bases(
+  int id: @index_expr ref,
+  int base: @expr ref
+);
+
+#keyset[id]
+index_expr_indices(
+  int id: @index_expr ref,
+  int index: @expr ref
+);
+
+infer_type_reprs(
+  unique int id: @infer_type_repr
+);
+
+@item =
+  @asm_expr
+| @assoc_item
+| @extern_block
+| @extern_crate
+| @extern_item
+| @impl
+| @macro_def
+| @macro_rules
+| @module
+| @trait
+| @trait_alias
+| @type_item
+| @use
+;
+
+#keyset[id]
+item_attribute_macro_expansions(
+  int id: @item ref,
+  int attribute_macro_expansion: @macro_items ref
+);
+
+@labelable_expr =
+  @block_expr
+| @looping_expr
+;
+
+#keyset[id]
+labelable_expr_labels(
+  int id: @labelable_expr ref,
+  int label: @label ref
+);
+
+let_exprs(
+  unique int id: @let_expr
+);
+
+#keyset[id, index]
+let_expr_attrs(
+  int id: @let_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+let_expr_scrutinees(
+  int id: @let_expr ref,
+  int scrutinee: @expr ref
+);
+
+#keyset[id]
+let_expr_pats(
+  int id: @let_expr ref,
+  int pat: @pat ref
+);
+
+let_stmts(
+  unique int id: @let_stmt
+);
+
+#keyset[id, index]
+let_stmt_attrs(
+  int id: @let_stmt ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+let_stmt_initializers(
+  int id: @let_stmt ref,
+  int initializer: @expr ref
+);
+
+#keyset[id]
+let_stmt_let_elses(
+  int id: @let_stmt ref,
+  int let_else: @let_else ref
+);
+
+#keyset[id]
+let_stmt_pats(
+  int id: @let_stmt ref,
+  int pat: @pat ref
+);
+
+#keyset[id]
+let_stmt_type_reprs(
+  int id: @let_stmt ref,
+  int type_repr: @type_repr ref
+);
+
+lifetimes(
+  unique int id: @lifetime
+);
+
+#keyset[id]
+lifetime_texts(
+  int id: @lifetime ref,
+  string text: string ref
+);
+
+lifetime_args(
+  unique int id: @lifetime_arg
+);
+
+#keyset[id]
+lifetime_arg_lifetimes(
+  int id: @lifetime_arg ref,
+  int lifetime: @lifetime ref
+);
+
+lifetime_params(
+  unique int id: @lifetime_param
+);
+
+#keyset[id, index]
+lifetime_param_attrs(
+  int id: @lifetime_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+lifetime_param_lifetimes(
+  int id: @lifetime_param ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+lifetime_param_type_bound_lists(
+  int id: @lifetime_param ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+literal_exprs(
+  unique int id: @literal_expr
+);
+
+#keyset[id, index]
+literal_expr_attrs(
+  int id: @literal_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+literal_expr_text_values(
+  int id: @literal_expr ref,
+  string text_value: string ref
+);
+
+literal_pats(
+  unique int id: @literal_pat
+);
+
+#keyset[id]
+literal_pat_literals(
+  int id: @literal_pat ref,
+  int literal: @literal_expr ref
+);
+
+macro_exprs(
+  unique int id: @macro_expr
+);
+
+#keyset[id]
+macro_expr_macro_calls(
+  int id: @macro_expr ref,
+  int macro_call: @macro_call ref
+);
+
+macro_pats(
+  unique int id: @macro_pat
+);
+
+#keyset[id]
+macro_pat_macro_calls(
+  int id: @macro_pat ref,
+  int macro_call: @macro_call ref
+);
+
+macro_type_reprs(
+  unique int id: @macro_type_repr
+);
+
+#keyset[id]
+macro_type_repr_macro_calls(
+  int id: @macro_type_repr ref,
+  int macro_call: @macro_call ref
+);
+
+match_exprs(
+  unique int id: @match_expr
+);
+
+#keyset[id, index]
+match_expr_attrs(
+  int id: @match_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+match_expr_scrutinees(
+  int id: @match_expr ref,
+  int scrutinee: @expr ref
+);
+
+#keyset[id]
+match_expr_match_arm_lists(
+  int id: @match_expr ref,
+  int match_arm_list: @match_arm_list ref
+);
+
+method_call_exprs(
+  unique int id: @method_call_expr
+);
+
+#keyset[id]
+method_call_expr_arg_lists(
+  int id: @method_call_expr ref,
+  int arg_list: @arg_list ref
+);
+
+#keyset[id, index]
+method_call_expr_attrs(
+  int id: @method_call_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+method_call_expr_generic_arg_lists(
+  int id: @method_call_expr ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+method_call_expr_identifiers(
+  int id: @method_call_expr ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+method_call_expr_receivers(
+  int id: @method_call_expr ref,
+  int receiver: @expr ref
+);
+
+name_refs(
+  unique int id: @name_ref
+);
+
+#keyset[id]
+name_ref_texts(
+  int id: @name_ref ref,
+  string text: string ref
+);
+
+never_type_reprs(
+  unique int id: @never_type_repr
+);
+
+offset_of_exprs(
+  unique int id: @offset_of_expr
+);
+
+#keyset[id, index]
+offset_of_expr_attrs(
+  int id: @offset_of_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+offset_of_expr_fields(
+  int id: @offset_of_expr ref,
+  int index: int ref,
+  int field: @name_ref ref
+);
+
+#keyset[id]
+offset_of_expr_type_reprs(
+  int id: @offset_of_expr ref,
+  int type_repr: @type_repr ref
+);
+
+or_pats(
+  unique int id: @or_pat
+);
+
+#keyset[id, index]
+or_pat_pats(
+  int id: @or_pat ref,
+  int index: int ref,
+  int pat: @pat ref
+);
+
+params(
+  unique int id: @param
+);
+
+#keyset[id]
+param_pats(
+  int id: @param ref,
+  int pat: @pat ref
+);
+
+paren_exprs(
+  unique int id: @paren_expr
+);
+
+#keyset[id, index]
+paren_expr_attrs(
+  int id: @paren_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+paren_expr_exprs(
+  int id: @paren_expr ref,
+  int expr: @expr ref
+);
+
+paren_pats(
+  unique int id: @paren_pat
+);
+
+#keyset[id]
+paren_pat_pats(
+  int id: @paren_pat ref,
+  int pat: @pat ref
+);
+
+paren_type_reprs(
+  unique int id: @paren_type_repr
+);
+
+#keyset[id]
+paren_type_repr_type_reprs(
+  int id: @paren_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+@path_expr_base =
+  @path_expr
+;
+
+path_pats(
+  unique int id: @path_pat
+);
+
+path_type_reprs(
+  unique int id: @path_type_repr
+);
+
+#keyset[id]
+path_type_repr_paths(
+  int id: @path_type_repr ref,
+  int path: @path ref
+);
+
+prefix_exprs(
+  unique int id: @prefix_expr
+);
+
+#keyset[id, index]
+prefix_expr_attrs(
+  int id: @prefix_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+prefix_expr_exprs(
+  int id: @prefix_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+prefix_expr_operator_names(
+  int id: @prefix_expr ref,
+  string operator_name: string ref
+);
+
+ptr_type_reprs(
+  unique int id: @ptr_type_repr
+);
+
+#keyset[id]
+ptr_type_repr_is_const(
+  int id: @ptr_type_repr ref
+);
+
+#keyset[id]
+ptr_type_repr_is_mut(
+  int id: @ptr_type_repr ref
+);
+
+#keyset[id]
+ptr_type_repr_type_reprs(
+  int id: @ptr_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+range_exprs(
+  unique int id: @range_expr
+);
+
+#keyset[id, index]
+range_expr_attrs(
+  int id: @range_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+range_expr_ends(
+  int id: @range_expr ref,
+  int end: @expr ref
+);
+
+#keyset[id]
+range_expr_operator_names(
+  int id: @range_expr ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+range_expr_starts(
+  int id: @range_expr ref,
+  int start: @expr ref
+);
+
+range_pats(
+  unique int id: @range_pat
+);
+
+#keyset[id]
+range_pat_ends(
+  int id: @range_pat ref,
+  int end: @pat ref
+);
+
+#keyset[id]
+range_pat_operator_names(
+  int id: @range_pat ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+range_pat_starts(
+  int id: @range_pat ref,
+  int start: @pat ref
+);
+
+ref_exprs(
+  unique int id: @ref_expr
+);
+
+#keyset[id, index]
+ref_expr_attrs(
+  int id: @ref_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+ref_expr_exprs(
+  int id: @ref_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+ref_expr_is_const(
+  int id: @ref_expr ref
+);
+
+#keyset[id]
+ref_expr_is_mut(
+  int id: @ref_expr ref
+);
+
+#keyset[id]
+ref_expr_is_raw(
+  int id: @ref_expr ref
+);
+
+ref_pats(
+  unique int id: @ref_pat
+);
+
+#keyset[id]
+ref_pat_is_mut(
+  int id: @ref_pat ref
+);
+
+#keyset[id]
+ref_pat_pats(
+  int id: @ref_pat ref,
+  int pat: @pat ref
+);
+
+ref_type_reprs(
+  unique int id: @ref_type_repr
+);
+
+#keyset[id]
+ref_type_repr_is_mut(
+  int id: @ref_type_repr ref
+);
+
+#keyset[id]
+ref_type_repr_lifetimes(
+  int id: @ref_type_repr ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+ref_type_repr_type_reprs(
+  int id: @ref_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+rest_pats(
+  unique int id: @rest_pat
+);
+
+#keyset[id, index]
+rest_pat_attrs(
+  int id: @rest_pat ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+return_exprs(
+  unique int id: @return_expr
+);
+
+#keyset[id, index]
+return_expr_attrs(
+  int id: @return_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+return_expr_exprs(
+  int id: @return_expr ref,
+  int expr: @expr ref
+);
+
+self_params(
+  unique int id: @self_param
+);
+
+#keyset[id]
+self_param_is_ref(
+  int id: @self_param ref
+);
+
+#keyset[id]
+self_param_is_mut(
+  int id: @self_param ref
+);
+
+#keyset[id]
+self_param_lifetimes(
+  int id: @self_param ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+self_param_names(
+  int id: @self_param ref,
+  int name: @name ref
+);
+
+slice_pats(
+  unique int id: @slice_pat
+);
+
+#keyset[id, index]
+slice_pat_pats(
+  int id: @slice_pat ref,
+  int index: int ref,
+  int pat: @pat ref
+);
+
+slice_type_reprs(
+  unique int id: @slice_type_repr
+);
+
+#keyset[id]
+slice_type_repr_type_reprs(
+  int id: @slice_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+struct_exprs(
+  unique int id: @struct_expr
+);
+
+#keyset[id]
+struct_expr_struct_expr_field_lists(
+  int id: @struct_expr ref,
+  int struct_expr_field_list: @struct_expr_field_list ref
+);
+
+struct_field_lists(
+  unique int id: @struct_field_list
+);
+
+#keyset[id, index]
+struct_field_list_fields(
+  int id: @struct_field_list ref,
+  int index: int ref,
+  int field: @struct_field ref
+);
+
+struct_pats(
+  unique int id: @struct_pat
+);
+
+#keyset[id]
+struct_pat_struct_pat_field_lists(
+  int id: @struct_pat ref,
+  int struct_pat_field_list: @struct_pat_field_list ref
+);
+
+try_exprs(
+  unique int id: @try_expr
+);
+
+#keyset[id, index]
+try_expr_attrs(
+  int id: @try_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+try_expr_exprs(
+  int id: @try_expr ref,
+  int expr: @expr ref
+);
+
+tuple_exprs(
+  unique int id: @tuple_expr
+);
+
+#keyset[id, index]
+tuple_expr_attrs(
+  int id: @tuple_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+tuple_expr_fields(
+  int id: @tuple_expr ref,
+  int index: int ref,
+  int field: @expr ref
+);
+
+tuple_field_lists(
+  unique int id: @tuple_field_list
+);
+
+#keyset[id, index]
+tuple_field_list_fields(
+  int id: @tuple_field_list ref,
+  int index: int ref,
+  int field: @tuple_field ref
+);
+
+tuple_pats(
+  unique int id: @tuple_pat
+);
+
+#keyset[id, index]
+tuple_pat_fields(
+  int id: @tuple_pat ref,
+  int index: int ref,
+  int field: @pat ref
+);
+
+tuple_struct_pats(
+  unique int id: @tuple_struct_pat
+);
+
+#keyset[id, index]
+tuple_struct_pat_fields(
+  int id: @tuple_struct_pat ref,
+  int index: int ref,
+  int field: @pat ref
+);
+
+tuple_type_reprs(
+  unique int id: @tuple_type_repr
+);
+
+#keyset[id, index]
+tuple_type_repr_fields(
+  int id: @tuple_type_repr ref,
+  int index: int ref,
+  int field: @type_repr ref
+);
+
+type_args(
+  unique int id: @type_arg
+);
+
+#keyset[id]
+type_arg_type_reprs(
+  int id: @type_arg ref,
+  int type_repr: @type_repr ref
+);
+
+type_params(
+  unique int id: @type_param
+);
+
+#keyset[id, index]
+type_param_attrs(
+  int id: @type_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_param_default_types(
+  int id: @type_param ref,
+  int default_type: @type_repr ref
+);
+
+#keyset[id]
+type_param_names(
+  int id: @type_param ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_param_type_bound_lists(
+  int id: @type_param ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+underscore_exprs(
+  unique int id: @underscore_expr
+);
+
+#keyset[id, index]
+underscore_expr_attrs(
+  int id: @underscore_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+variants(
+  unique int id: @variant
+);
+
+#keyset[id, index]
+variant_attrs(
+  int id: @variant ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+variant_discriminants(
+  int id: @variant ref,
+  int discriminant: @expr ref
+);
+
+#keyset[id]
+variant_field_lists(
+  int id: @variant ref,
+  int field_list: @field_list ref
+);
+
+#keyset[id]
+variant_names(
+  int id: @variant ref,
+  int name: @name ref
+);
+
+#keyset[id]
+variant_visibilities(
+  int id: @variant ref,
+  int visibility: @visibility ref
+);
+
+wildcard_pats(
+  unique int id: @wildcard_pat
+);
+
+yeet_exprs(
+  unique int id: @yeet_expr
+);
+
+#keyset[id, index]
+yeet_expr_attrs(
+  int id: @yeet_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+yeet_expr_exprs(
+  int id: @yeet_expr ref,
+  int expr: @expr ref
+);
+
+yield_exprs(
+  unique int id: @yield_expr
+);
+
+#keyset[id, index]
+yield_expr_attrs(
+  int id: @yield_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+yield_expr_exprs(
+  int id: @yield_expr ref,
+  int expr: @expr ref
+);
+
+asm_exprs(
+  unique int id: @asm_expr
+);
+
+#keyset[id, index]
+asm_expr_asm_pieces(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int asm_piece: @asm_piece ref
+);
+
+#keyset[id, index]
+asm_expr_attrs(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+asm_expr_templates(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int template: @expr ref
+);
+
+@assoc_item =
+  @const
+| @function
+| @macro_call
+| @type_alias
+;
+
+block_exprs(
+  unique int id: @block_expr
+);
+
+#keyset[id, index]
+block_expr_attrs(
+  int id: @block_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+block_expr_is_async(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_const(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_gen(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_move(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_try(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_unsafe(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_stmt_lists(
+  int id: @block_expr ref,
+  int stmt_list: @stmt_list ref
+);
+
+extern_blocks(
+  unique int id: @extern_block
+);
+
+#keyset[id]
+extern_block_abis(
+  int id: @extern_block ref,
+  int abi: @abi ref
+);
+
+#keyset[id, index]
+extern_block_attrs(
+  int id: @extern_block ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+extern_block_extern_item_lists(
+  int id: @extern_block ref,
+  int extern_item_list: @extern_item_list ref
+);
+
+#keyset[id]
+extern_block_is_unsafe(
+  int id: @extern_block ref
+);
+
+extern_crates(
+  unique int id: @extern_crate
+);
+
+#keyset[id, index]
+extern_crate_attrs(
+  int id: @extern_crate ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+extern_crate_identifiers(
+  int id: @extern_crate ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+extern_crate_renames(
+  int id: @extern_crate ref,
+  int rename: @rename ref
+);
+
+#keyset[id]
+extern_crate_visibilities(
+  int id: @extern_crate ref,
+  int visibility: @visibility ref
+);
+
+@extern_item =
+  @function
+| @macro_call
+| @static
+| @type_alias
+;
+
+impls(
+  unique int id: @impl
+);
+
+#keyset[id]
+impl_assoc_item_lists(
+  int id: @impl ref,
+  int assoc_item_list: @assoc_item_list ref
+);
+
+#keyset[id, index]
+impl_attrs(
+  int id: @impl ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+impl_generic_param_lists(
+  int id: @impl ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+impl_is_const(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_is_default(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_is_unsafe(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_self_ties(
+  int id: @impl ref,
+  int self_ty: @type_repr ref
+);
+
+#keyset[id]
+impl_traits(
+  int id: @impl ref,
+  int trait: @type_repr ref
+);
+
+#keyset[id]
+impl_visibilities(
+  int id: @impl ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+impl_where_clauses(
+  int id: @impl ref,
+  int where_clause: @where_clause ref
+);
+
+@looping_expr =
+  @for_expr
+| @loop_expr
+| @while_expr
+;
+
+#keyset[id]
+looping_expr_loop_bodies(
+  int id: @looping_expr ref,
+  int loop_body: @block_expr ref
+);
+
+macro_defs(
+  unique int id: @macro_def
+);
+
+#keyset[id]
+macro_def_args(
+  int id: @macro_def ref,
+  int args: @token_tree ref
+);
+
+#keyset[id, index]
+macro_def_attrs(
+  int id: @macro_def ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_def_bodies(
+  int id: @macro_def ref,
+  int body: @token_tree ref
+);
+
+#keyset[id]
+macro_def_names(
+  int id: @macro_def ref,
+  int name: @name ref
+);
+
+#keyset[id]
+macro_def_visibilities(
+  int id: @macro_def ref,
+  int visibility: @visibility ref
+);
+
+macro_rules(
+  unique int id: @macro_rules
+);
+
+#keyset[id, index]
+macro_rules_attrs(
+  int id: @macro_rules ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_rules_names(
+  int id: @macro_rules ref,
+  int name: @name ref
+);
+
+#keyset[id]
+macro_rules_token_trees(
+  int id: @macro_rules ref,
+  int token_tree: @token_tree ref
+);
+
+#keyset[id]
+macro_rules_visibilities(
+  int id: @macro_rules ref,
+  int visibility: @visibility ref
+);
+
+modules(
+  unique int id: @module
+);
+
+#keyset[id, index]
+module_attrs(
+  int id: @module ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+module_item_lists(
+  int id: @module ref,
+  int item_list: @item_list ref
+);
+
+#keyset[id]
+module_names(
+  int id: @module ref,
+  int name: @name ref
+);
+
+#keyset[id]
+module_visibilities(
+  int id: @module ref,
+  int visibility: @visibility ref
+);
+
+path_exprs(
+  unique int id: @path_expr
+);
+
+#keyset[id, index]
+path_expr_attrs(
+  int id: @path_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+traits(
+  unique int id: @trait
+);
+
+#keyset[id]
+trait_assoc_item_lists(
+  int id: @trait ref,
+  int assoc_item_list: @assoc_item_list ref
+);
+
+#keyset[id, index]
+trait_attrs(
+  int id: @trait ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+trait_generic_param_lists(
+  int id: @trait ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+trait_is_auto(
+  int id: @trait ref
+);
+
+#keyset[id]
+trait_is_unsafe(
+  int id: @trait ref
+);
+
+#keyset[id]
+trait_names(
+  int id: @trait ref,
+  int name: @name ref
+);
+
+#keyset[id]
+trait_type_bound_lists(
+  int id: @trait ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+trait_visibilities(
+  int id: @trait ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+trait_where_clauses(
+  int id: @trait ref,
+  int where_clause: @where_clause ref
+);
+
+trait_aliases(
+  unique int id: @trait_alias
+);
+
+#keyset[id, index]
+trait_alias_attrs(
+  int id: @trait_alias ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+trait_alias_generic_param_lists(
+  int id: @trait_alias ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+trait_alias_names(
+  int id: @trait_alias ref,
+  int name: @name ref
+);
+
+#keyset[id]
+trait_alias_type_bound_lists(
+  int id: @trait_alias ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+trait_alias_visibilities(
+  int id: @trait_alias ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+trait_alias_where_clauses(
+  int id: @trait_alias ref,
+  int where_clause: @where_clause ref
+);
+
+@type_item =
+  @enum
+| @struct
+| @union
+;
+
+#keyset[id, index]
+type_item_derive_macro_expansions(
+  int id: @type_item ref,
+  int index: int ref,
+  int derive_macro_expansion: @macro_items ref
+);
+
+#keyset[id, index]
+type_item_attrs(
+  int id: @type_item ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_item_generic_param_lists(
+  int id: @type_item ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+type_item_names(
+  int id: @type_item ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_item_visibilities(
+  int id: @type_item ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+type_item_where_clauses(
+  int id: @type_item ref,
+  int where_clause: @where_clause ref
+);
+
+uses(
+  unique int id: @use
+);
+
+#keyset[id, index]
+use_attrs(
+  int id: @use ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+use_use_trees(
+  int id: @use ref,
+  int use_tree: @use_tree ref
+);
+
+#keyset[id]
+use_visibilities(
+  int id: @use ref,
+  int visibility: @visibility ref
+);
+
+consts(
+  unique int id: @const
+);
+
+#keyset[id, index]
+const_attrs(
+  int id: @const ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+const_bodies(
+  int id: @const ref,
+  int body: @expr ref
+);
+
+#keyset[id]
+const_generic_param_lists(
+  int id: @const ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+const_is_const(
+  int id: @const ref
+);
+
+#keyset[id]
+const_is_default(
+  int id: @const ref
+);
+
+#keyset[id]
+const_names(
+  int id: @const ref,
+  int name: @name ref
+);
+
+#keyset[id]
+const_type_reprs(
+  int id: @const ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+const_visibilities(
+  int id: @const ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+const_where_clauses(
+  int id: @const ref,
+  int where_clause: @where_clause ref
+);
+
+#keyset[id]
+const_has_implementation(
+  int id: @const ref
+);
+
+enums(
+  unique int id: @enum
+);
+
+#keyset[id]
+enum_variant_lists(
+  int id: @enum ref,
+  int variant_list: @variant_list ref
+);
+
+for_exprs(
+  unique int id: @for_expr
+);
+
+#keyset[id, index]
+for_expr_attrs(
+  int id: @for_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+for_expr_iterables(
+  int id: @for_expr ref,
+  int iterable: @expr ref
+);
+
+#keyset[id]
+for_expr_pats(
+  int id: @for_expr ref,
+  int pat: @pat ref
+);
+
+functions(
+  unique int id: @function
+);
+
+#keyset[id]
+function_abis(
+  int id: @function ref,
+  int abi: @abi ref
+);
+
+#keyset[id]
+function_function_bodies(
+  int id: @function ref,
+  int function_body: @block_expr ref
+);
+
+#keyset[id]
+function_generic_param_lists(
+  int id: @function ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+function_is_async(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_const(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_default(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_gen(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_unsafe(
+  int id: @function ref
+);
+
+#keyset[id]
+function_names(
+  int id: @function ref,
+  int name: @name ref
+);
+
+#keyset[id]
+function_ret_types(
+  int id: @function ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+function_visibilities(
+  int id: @function ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+function_where_clauses(
+  int id: @function ref,
+  int where_clause: @where_clause ref
+);
+
+#keyset[id]
+function_has_implementation(
+  int id: @function ref
+);
+
+loop_exprs(
+  unique int id: @loop_expr
+);
+
+#keyset[id, index]
+loop_expr_attrs(
+  int id: @loop_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+macro_calls(
+  unique int id: @macro_call
+);
+
+#keyset[id, index]
+macro_call_attrs(
+  int id: @macro_call ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_call_paths(
+  int id: @macro_call ref,
+  int path: @path ref
+);
+
+#keyset[id]
+macro_call_token_trees(
+  int id: @macro_call ref,
+  int token_tree: @token_tree ref
+);
+
+#keyset[id]
+macro_call_macro_call_expansions(
+  int id: @macro_call ref,
+  int macro_call_expansion: @ast_node ref
+);
+
+statics(
+  unique int id: @static
+);
+
+#keyset[id, index]
+static_attrs(
+  int id: @static ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+static_bodies(
+  int id: @static ref,
+  int body: @expr ref
+);
+
+#keyset[id]
+static_is_mut(
+  int id: @static ref
+);
+
+#keyset[id]
+static_is_static(
+  int id: @static ref
+);
+
+#keyset[id]
+static_is_unsafe(
+  int id: @static ref
+);
+
+#keyset[id]
+static_names(
+  int id: @static ref,
+  int name: @name ref
+);
+
+#keyset[id]
+static_type_reprs(
+  int id: @static ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+static_visibilities(
+  int id: @static ref,
+  int visibility: @visibility ref
+);
+
+structs(
+  unique int id: @struct
+);
+
+#keyset[id]
+struct_field_lists_(
+  int id: @struct ref,
+  int field_list: @field_list ref
+);
+
+type_aliases(
+  unique int id: @type_alias
+);
+
+#keyset[id, index]
+type_alias_attrs(
+  int id: @type_alias ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_alias_generic_param_lists(
+  int id: @type_alias ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+type_alias_is_default(
+  int id: @type_alias ref
+);
+
+#keyset[id]
+type_alias_names(
+  int id: @type_alias ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_alias_type_reprs(
+  int id: @type_alias ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+type_alias_type_bound_lists(
+  int id: @type_alias ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+type_alias_visibilities(
+  int id: @type_alias ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+type_alias_where_clauses(
+  int id: @type_alias ref,
+  int where_clause: @where_clause ref
+);
+
+unions(
+  unique int id: @union
+);
+
+#keyset[id]
+union_struct_field_lists(
+  int id: @union ref,
+  int struct_field_list: @struct_field_list ref
+);
+
+while_exprs(
+  unique int id: @while_expr
+);
+
+#keyset[id, index]
+while_expr_attrs(
+  int id: @while_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+while_expr_conditions(
+  int id: @while_expr ref,
+  int condition: @expr ref
+);
diff --git a/rust/downgrades/66a489863649185f4a9770f894505803059a1312/semmlecode.dbscheme b/rust/downgrades/66a489863649185f4a9770f894505803059a1312/semmlecode.dbscheme
new file mode 100644
index 000000000000..90861289dd4c
--- /dev/null
+++ b/rust/downgrades/66a489863649185f4a9770f894505803059a1312/semmlecode.dbscheme
@@ -0,0 +1,3544 @@
+// generated by codegen, do not edit
+
+// from ../shared/tree-sitter-extractor/src/generator/prefix.dbscheme
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Empty location -*/
+
+empty_location(
+  int location: @location_default ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- Diagnostic messages: severity -*/
+
+case @diagnostic.severity of
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
+;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Database metadata -*/
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+overlayChangedFiles(
+  string path: string ref
+);
+
+
+// from prefix.dbscheme
+#keyset[id]
+locatable_locations(
+  int id: @locatable ref,
+  int location: @location_default ref
+);
+
+
+// from schema
+
+@element =
+  @extractor_step
+| @locatable
+| @named_crate
+| @unextracted
+;
+
+extractor_steps(
+  unique int id: @extractor_step,
+  string action: string ref,
+  int duration_ms: int ref
+);
+
+#keyset[id]
+extractor_step_files(
+  int id: @extractor_step ref,
+  int file: @file ref
+);
+
+@locatable =
+  @ast_node
+| @crate
+;
+
+named_crates(
+  unique int id: @named_crate,
+  string name: string ref,
+  int crate: @crate ref
+);
+
+@unextracted =
+  @missing
+| @unimplemented
+;
+
+@ast_node =
+  @abi
+| @addressable
+| @arg_list
+| @asm_dir_spec
+| @asm_operand
+| @asm_operand_expr
+| @asm_option
+| @asm_piece
+| @asm_reg_spec
+| @assoc_item_list
+| @attr
+| @callable
+| @expr
+| @extern_item_list
+| @field_list
+| @for_binder
+| @format_args_arg
+| @generic_arg
+| @generic_arg_list
+| @generic_param
+| @generic_param_list
+| @item_list
+| @label
+| @let_else
+| @macro_items
+| @match_arm
+| @match_arm_list
+| @match_guard
+| @meta
+| @name
+| @param_base
+| @param_list
+| @parenthesized_arg_list
+| @pat
+| @path
+| @path_ast_node
+| @path_segment
+| @rename
+| @ret_type_repr
+| @return_type_syntax
+| @source_file
+| @stmt
+| @stmt_list
+| @struct_expr_field
+| @struct_expr_field_list
+| @struct_field
+| @struct_pat_field
+| @struct_pat_field_list
+| @token
+| @token_tree
+| @tuple_field
+| @type_bound
+| @type_bound_list
+| @type_repr
+| @use_bound_generic_arg
+| @use_bound_generic_args
+| @use_tree
+| @use_tree_list
+| @variant_list
+| @visibility
+| @where_clause
+| @where_pred
+;
+
+crates(
+  unique int id: @crate
+);
+
+#keyset[id]
+crate_names(
+  int id: @crate ref,
+  string name: string ref
+);
+
+#keyset[id]
+crate_versions(
+  int id: @crate ref,
+  string version: string ref
+);
+
+#keyset[id, index]
+crate_cfg_options(
+  int id: @crate ref,
+  int index: int ref,
+  string cfg_option: string ref
+);
+
+#keyset[id, index]
+crate_named_dependencies(
+  int id: @crate ref,
+  int index: int ref,
+  int named_dependency: @named_crate ref
+);
+
+missings(
+  unique int id: @missing
+);
+
+unimplementeds(
+  unique int id: @unimplemented
+);
+
+abis(
+  unique int id: @abi
+);
+
+#keyset[id]
+abi_abi_strings(
+  int id: @abi ref,
+  string abi_string: string ref
+);
+
+@addressable =
+  @item
+| @variant
+;
+
+arg_lists(
+  unique int id: @arg_list
+);
+
+#keyset[id, index]
+arg_list_args(
+  int id: @arg_list ref,
+  int index: int ref,
+  int arg: @expr ref
+);
+
+asm_dir_specs(
+  unique int id: @asm_dir_spec
+);
+
+@asm_operand =
+  @asm_const
+| @asm_label
+| @asm_reg_operand
+| @asm_sym
+;
+
+asm_operand_exprs(
+  unique int id: @asm_operand_expr
+);
+
+#keyset[id]
+asm_operand_expr_in_exprs(
+  int id: @asm_operand_expr ref,
+  int in_expr: @expr ref
+);
+
+#keyset[id]
+asm_operand_expr_out_exprs(
+  int id: @asm_operand_expr ref,
+  int out_expr: @expr ref
+);
+
+asm_options(
+  unique int id: @asm_option
+);
+
+#keyset[id]
+asm_option_is_raw(
+  int id: @asm_option ref
+);
+
+@asm_piece =
+  @asm_clobber_abi
+| @asm_operand_named
+| @asm_options_list
+;
+
+asm_reg_specs(
+  unique int id: @asm_reg_spec
+);
+
+#keyset[id]
+asm_reg_spec_identifiers(
+  int id: @asm_reg_spec ref,
+  int identifier: @name_ref ref
+);
+
+assoc_item_lists(
+  unique int id: @assoc_item_list
+);
+
+#keyset[id, index]
+assoc_item_list_assoc_items(
+  int id: @assoc_item_list ref,
+  int index: int ref,
+  int assoc_item: @assoc_item ref
+);
+
+#keyset[id, index]
+assoc_item_list_attrs(
+  int id: @assoc_item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+attrs(
+  unique int id: @attr
+);
+
+#keyset[id]
+attr_meta(
+  int id: @attr ref,
+  int meta: @meta ref
+);
+
+@callable =
+  @closure_expr
+| @function
+;
+
+#keyset[id]
+callable_param_lists(
+  int id: @callable ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id, index]
+callable_attrs(
+  int id: @callable ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+@expr =
+  @array_expr_internal
+| @asm_expr
+| @await_expr
+| @become_expr
+| @binary_expr
+| @break_expr
+| @call_expr
+| @cast_expr
+| @closure_expr
+| @continue_expr
+| @field_expr
+| @format_args_expr
+| @if_expr
+| @index_expr
+| @labelable_expr
+| @let_expr
+| @literal_expr
+| @macro_expr
+| @match_expr
+| @method_call_expr
+| @offset_of_expr
+| @paren_expr
+| @path_expr_base
+| @prefix_expr
+| @range_expr
+| @ref_expr
+| @return_expr
+| @struct_expr
+| @try_expr
+| @tuple_expr
+| @underscore_expr
+| @yeet_expr
+| @yield_expr
+;
+
+extern_item_lists(
+  unique int id: @extern_item_list
+);
+
+#keyset[id, index]
+extern_item_list_attrs(
+  int id: @extern_item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+extern_item_list_extern_items(
+  int id: @extern_item_list ref,
+  int index: int ref,
+  int extern_item: @extern_item ref
+);
+
+@field_list =
+  @struct_field_list
+| @tuple_field_list
+;
+
+for_binders(
+  unique int id: @for_binder
+);
+
+#keyset[id]
+for_binder_generic_param_lists(
+  int id: @for_binder ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+format_args_args(
+  unique int id: @format_args_arg
+);
+
+#keyset[id]
+format_args_arg_exprs(
+  int id: @format_args_arg ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+format_args_arg_names(
+  int id: @format_args_arg ref,
+  int name: @name ref
+);
+
+@generic_arg =
+  @assoc_type_arg
+| @const_arg
+| @lifetime_arg
+| @type_arg
+;
+
+generic_arg_lists(
+  unique int id: @generic_arg_list
+);
+
+#keyset[id, index]
+generic_arg_list_generic_args(
+  int id: @generic_arg_list ref,
+  int index: int ref,
+  int generic_arg: @generic_arg ref
+);
+
+@generic_param =
+  @const_param
+| @lifetime_param
+| @type_param
+;
+
+generic_param_lists(
+  unique int id: @generic_param_list
+);
+
+#keyset[id, index]
+generic_param_list_generic_params(
+  int id: @generic_param_list ref,
+  int index: int ref,
+  int generic_param: @generic_param ref
+);
+
+item_lists(
+  unique int id: @item_list
+);
+
+#keyset[id, index]
+item_list_attrs(
+  int id: @item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+item_list_items(
+  int id: @item_list ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+labels(
+  unique int id: @label
+);
+
+#keyset[id]
+label_lifetimes(
+  int id: @label ref,
+  int lifetime: @lifetime ref
+);
+
+let_elses(
+  unique int id: @let_else
+);
+
+#keyset[id]
+let_else_block_exprs(
+  int id: @let_else ref,
+  int block_expr: @block_expr ref
+);
+
+macro_items(
+  unique int id: @macro_items
+);
+
+#keyset[id, index]
+macro_items_items(
+  int id: @macro_items ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+match_arms(
+  unique int id: @match_arm
+);
+
+#keyset[id, index]
+match_arm_attrs(
+  int id: @match_arm ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+match_arm_exprs(
+  int id: @match_arm ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+match_arm_guards(
+  int id: @match_arm ref,
+  int guard: @match_guard ref
+);
+
+#keyset[id]
+match_arm_pats(
+  int id: @match_arm ref,
+  int pat: @pat ref
+);
+
+match_arm_lists(
+  unique int id: @match_arm_list
+);
+
+#keyset[id, index]
+match_arm_list_arms(
+  int id: @match_arm_list ref,
+  int index: int ref,
+  int arm: @match_arm ref
+);
+
+#keyset[id, index]
+match_arm_list_attrs(
+  int id: @match_arm_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+match_guards(
+  unique int id: @match_guard
+);
+
+#keyset[id]
+match_guard_conditions(
+  int id: @match_guard ref,
+  int condition: @expr ref
+);
+
+meta(
+  unique int id: @meta
+);
+
+#keyset[id]
+meta_exprs(
+  int id: @meta ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+meta_is_unsafe(
+  int id: @meta ref
+);
+
+#keyset[id]
+meta_paths(
+  int id: @meta ref,
+  int path: @path ref
+);
+
+#keyset[id]
+meta_token_trees(
+  int id: @meta ref,
+  int token_tree: @token_tree ref
+);
+
+names(
+  unique int id: @name
+);
+
+#keyset[id]
+name_texts(
+  int id: @name ref,
+  string text: string ref
+);
+
+@param_base =
+  @param
+| @self_param
+;
+
+#keyset[id, index]
+param_base_attrs(
+  int id: @param_base ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+param_base_type_reprs(
+  int id: @param_base ref,
+  int type_repr: @type_repr ref
+);
+
+param_lists(
+  unique int id: @param_list
+);
+
+#keyset[id, index]
+param_list_params(
+  int id: @param_list ref,
+  int index: int ref,
+  int param: @param ref
+);
+
+#keyset[id]
+param_list_self_params(
+  int id: @param_list ref,
+  int self_param: @self_param ref
+);
+
+parenthesized_arg_lists(
+  unique int id: @parenthesized_arg_list
+);
+
+#keyset[id, index]
+parenthesized_arg_list_type_args(
+  int id: @parenthesized_arg_list ref,
+  int index: int ref,
+  int type_arg: @type_arg ref
+);
+
+@pat =
+  @box_pat
+| @const_block_pat
+| @ident_pat
+| @literal_pat
+| @macro_pat
+| @or_pat
+| @paren_pat
+| @path_pat
+| @range_pat
+| @ref_pat
+| @rest_pat
+| @slice_pat
+| @struct_pat
+| @tuple_pat
+| @tuple_struct_pat
+| @wildcard_pat
+;
+
+paths(
+  unique int id: @path
+);
+
+#keyset[id]
+path_qualifiers(
+  int id: @path ref,
+  int qualifier: @path ref
+);
+
+#keyset[id]
+path_segments_(
+  int id: @path ref,
+  int segment: @path_segment ref
+);
+
+@path_ast_node =
+  @path_expr
+| @path_pat
+| @struct_expr
+| @struct_pat
+| @tuple_struct_pat
+;
+
+#keyset[id]
+path_ast_node_paths(
+  int id: @path_ast_node ref,
+  int path: @path ref
+);
+
+path_segments(
+  unique int id: @path_segment
+);
+
+#keyset[id]
+path_segment_generic_arg_lists(
+  int id: @path_segment ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+path_segment_identifiers(
+  int id: @path_segment ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+path_segment_parenthesized_arg_lists(
+  int id: @path_segment ref,
+  int parenthesized_arg_list: @parenthesized_arg_list ref
+);
+
+#keyset[id]
+path_segment_ret_types(
+  int id: @path_segment ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+path_segment_return_type_syntaxes(
+  int id: @path_segment ref,
+  int return_type_syntax: @return_type_syntax ref
+);
+
+#keyset[id]
+path_segment_type_reprs(
+  int id: @path_segment ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+path_segment_trait_type_reprs(
+  int id: @path_segment ref,
+  int trait_type_repr: @path_type_repr ref
+);
+
+renames(
+  unique int id: @rename
+);
+
+#keyset[id]
+rename_names(
+  int id: @rename ref,
+  int name: @name ref
+);
+
+ret_type_reprs(
+  unique int id: @ret_type_repr
+);
+
+#keyset[id]
+ret_type_repr_type_reprs(
+  int id: @ret_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+return_type_syntaxes(
+  unique int id: @return_type_syntax
+);
+
+source_files(
+  unique int id: @source_file
+);
+
+#keyset[id, index]
+source_file_attrs(
+  int id: @source_file ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+source_file_items(
+  int id: @source_file ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+@stmt =
+  @expr_stmt
+| @item
+| @let_stmt
+;
+
+stmt_lists(
+  unique int id: @stmt_list
+);
+
+#keyset[id, index]
+stmt_list_attrs(
+  int id: @stmt_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+stmt_list_statements(
+  int id: @stmt_list ref,
+  int index: int ref,
+  int statement: @stmt ref
+);
+
+#keyset[id]
+stmt_list_tail_exprs(
+  int id: @stmt_list ref,
+  int tail_expr: @expr ref
+);
+
+struct_expr_fields(
+  unique int id: @struct_expr_field
+);
+
+#keyset[id, index]
+struct_expr_field_attrs(
+  int id: @struct_expr_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_expr_field_exprs(
+  int id: @struct_expr_field ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+struct_expr_field_identifiers(
+  int id: @struct_expr_field ref,
+  int identifier: @name_ref ref
+);
+
+struct_expr_field_lists(
+  unique int id: @struct_expr_field_list
+);
+
+#keyset[id, index]
+struct_expr_field_list_attrs(
+  int id: @struct_expr_field_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+struct_expr_field_list_fields(
+  int id: @struct_expr_field_list ref,
+  int index: int ref,
+  int field: @struct_expr_field ref
+);
+
+#keyset[id]
+struct_expr_field_list_spreads(
+  int id: @struct_expr_field_list ref,
+  int spread: @expr ref
+);
+
+struct_fields(
+  unique int id: @struct_field
+);
+
+#keyset[id, index]
+struct_field_attrs(
+  int id: @struct_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_field_defaults(
+  int id: @struct_field ref,
+  int default: @expr ref
+);
+
+#keyset[id]
+struct_field_is_unsafe(
+  int id: @struct_field ref
+);
+
+#keyset[id]
+struct_field_names(
+  int id: @struct_field ref,
+  int name: @name ref
+);
+
+#keyset[id]
+struct_field_type_reprs(
+  int id: @struct_field ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+struct_field_visibilities(
+  int id: @struct_field ref,
+  int visibility: @visibility ref
+);
+
+struct_pat_fields(
+  unique int id: @struct_pat_field
+);
+
+#keyset[id, index]
+struct_pat_field_attrs(
+  int id: @struct_pat_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_pat_field_identifiers(
+  int id: @struct_pat_field ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+struct_pat_field_pats(
+  int id: @struct_pat_field ref,
+  int pat: @pat ref
+);
+
+struct_pat_field_lists(
+  unique int id: @struct_pat_field_list
+);
+
+#keyset[id, index]
+struct_pat_field_list_fields(
+  int id: @struct_pat_field_list ref,
+  int index: int ref,
+  int field: @struct_pat_field ref
+);
+
+#keyset[id]
+struct_pat_field_list_rest_pats(
+  int id: @struct_pat_field_list ref,
+  int rest_pat: @rest_pat ref
+);
+
+@token =
+  @comment
+;
+
+token_trees(
+  unique int id: @token_tree
+);
+
+tuple_fields(
+  unique int id: @tuple_field
+);
+
+#keyset[id, index]
+tuple_field_attrs(
+  int id: @tuple_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+tuple_field_type_reprs(
+  int id: @tuple_field ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+tuple_field_visibilities(
+  int id: @tuple_field ref,
+  int visibility: @visibility ref
+);
+
+type_bounds(
+  unique int id: @type_bound
+);
+
+#keyset[id]
+type_bound_for_binders(
+  int id: @type_bound ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+type_bound_is_async(
+  int id: @type_bound ref
+);
+
+#keyset[id]
+type_bound_is_const(
+  int id: @type_bound ref
+);
+
+#keyset[id]
+type_bound_lifetimes(
+  int id: @type_bound ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+type_bound_type_reprs(
+  int id: @type_bound ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+type_bound_use_bound_generic_args(
+  int id: @type_bound ref,
+  int use_bound_generic_args: @use_bound_generic_args ref
+);
+
+type_bound_lists(
+  unique int id: @type_bound_list
+);
+
+#keyset[id, index]
+type_bound_list_bounds(
+  int id: @type_bound_list ref,
+  int index: int ref,
+  int bound: @type_bound ref
+);
+
+@type_repr =
+  @array_type_repr
+| @dyn_trait_type_repr
+| @fn_ptr_type_repr
+| @for_type_repr
+| @impl_trait_type_repr
+| @infer_type_repr
+| @macro_type_repr
+| @never_type_repr
+| @paren_type_repr
+| @path_type_repr
+| @ptr_type_repr
+| @ref_type_repr
+| @slice_type_repr
+| @tuple_type_repr
+;
+
+@use_bound_generic_arg =
+  @lifetime
+| @name_ref
+;
+
+use_bound_generic_args(
+  unique int id: @use_bound_generic_args
+);
+
+#keyset[id, index]
+use_bound_generic_args_use_bound_generic_args(
+  int id: @use_bound_generic_args ref,
+  int index: int ref,
+  int use_bound_generic_arg: @use_bound_generic_arg ref
+);
+
+use_trees(
+  unique int id: @use_tree
+);
+
+#keyset[id]
+use_tree_is_glob(
+  int id: @use_tree ref
+);
+
+#keyset[id]
+use_tree_paths(
+  int id: @use_tree ref,
+  int path: @path ref
+);
+
+#keyset[id]
+use_tree_renames(
+  int id: @use_tree ref,
+  int rename: @rename ref
+);
+
+#keyset[id]
+use_tree_use_tree_lists(
+  int id: @use_tree ref,
+  int use_tree_list: @use_tree_list ref
+);
+
+use_tree_lists(
+  unique int id: @use_tree_list
+);
+
+#keyset[id, index]
+use_tree_list_use_trees(
+  int id: @use_tree_list ref,
+  int index: int ref,
+  int use_tree: @use_tree ref
+);
+
+variant_lists(
+  unique int id: @variant_list
+);
+
+#keyset[id, index]
+variant_list_variants(
+  int id: @variant_list ref,
+  int index: int ref,
+  int variant: @variant ref
+);
+
+visibilities(
+  unique int id: @visibility
+);
+
+#keyset[id]
+visibility_paths(
+  int id: @visibility ref,
+  int path: @path ref
+);
+
+where_clauses(
+  unique int id: @where_clause
+);
+
+#keyset[id, index]
+where_clause_predicates(
+  int id: @where_clause ref,
+  int index: int ref,
+  int predicate: @where_pred ref
+);
+
+where_preds(
+  unique int id: @where_pred
+);
+
+#keyset[id]
+where_pred_for_binders(
+  int id: @where_pred ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+where_pred_lifetimes(
+  int id: @where_pred ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+where_pred_type_reprs(
+  int id: @where_pred ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+where_pred_type_bound_lists(
+  int id: @where_pred ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+array_expr_internals(
+  unique int id: @array_expr_internal
+);
+
+#keyset[id, index]
+array_expr_internal_attrs(
+  int id: @array_expr_internal ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+array_expr_internal_exprs(
+  int id: @array_expr_internal ref,
+  int index: int ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+array_expr_internal_is_semicolon(
+  int id: @array_expr_internal ref
+);
+
+array_type_reprs(
+  unique int id: @array_type_repr
+);
+
+#keyset[id]
+array_type_repr_const_args(
+  int id: @array_type_repr ref,
+  int const_arg: @const_arg ref
+);
+
+#keyset[id]
+array_type_repr_element_type_reprs(
+  int id: @array_type_repr ref,
+  int element_type_repr: @type_repr ref
+);
+
+asm_clobber_abis(
+  unique int id: @asm_clobber_abi
+);
+
+asm_consts(
+  unique int id: @asm_const
+);
+
+#keyset[id]
+asm_const_exprs(
+  int id: @asm_const ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+asm_const_is_const(
+  int id: @asm_const ref
+);
+
+asm_labels(
+  unique int id: @asm_label
+);
+
+#keyset[id]
+asm_label_block_exprs(
+  int id: @asm_label ref,
+  int block_expr: @block_expr ref
+);
+
+asm_operand_nameds(
+  unique int id: @asm_operand_named
+);
+
+#keyset[id]
+asm_operand_named_asm_operands(
+  int id: @asm_operand_named ref,
+  int asm_operand: @asm_operand ref
+);
+
+#keyset[id]
+asm_operand_named_names(
+  int id: @asm_operand_named ref,
+  int name: @name ref
+);
+
+asm_options_lists(
+  unique int id: @asm_options_list
+);
+
+#keyset[id, index]
+asm_options_list_asm_options(
+  int id: @asm_options_list ref,
+  int index: int ref,
+  int asm_option: @asm_option ref
+);
+
+asm_reg_operands(
+  unique int id: @asm_reg_operand
+);
+
+#keyset[id]
+asm_reg_operand_asm_dir_specs(
+  int id: @asm_reg_operand ref,
+  int asm_dir_spec: @asm_dir_spec ref
+);
+
+#keyset[id]
+asm_reg_operand_asm_operand_exprs(
+  int id: @asm_reg_operand ref,
+  int asm_operand_expr: @asm_operand_expr ref
+);
+
+#keyset[id]
+asm_reg_operand_asm_reg_specs(
+  int id: @asm_reg_operand ref,
+  int asm_reg_spec: @asm_reg_spec ref
+);
+
+asm_syms(
+  unique int id: @asm_sym
+);
+
+#keyset[id]
+asm_sym_paths(
+  int id: @asm_sym ref,
+  int path: @path ref
+);
+
+assoc_type_args(
+  unique int id: @assoc_type_arg
+);
+
+#keyset[id]
+assoc_type_arg_const_args(
+  int id: @assoc_type_arg ref,
+  int const_arg: @const_arg ref
+);
+
+#keyset[id]
+assoc_type_arg_generic_arg_lists(
+  int id: @assoc_type_arg ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+assoc_type_arg_identifiers(
+  int id: @assoc_type_arg ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+assoc_type_arg_param_lists(
+  int id: @assoc_type_arg ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id]
+assoc_type_arg_ret_types(
+  int id: @assoc_type_arg ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+assoc_type_arg_return_type_syntaxes(
+  int id: @assoc_type_arg ref,
+  int return_type_syntax: @return_type_syntax ref
+);
+
+#keyset[id]
+assoc_type_arg_type_reprs(
+  int id: @assoc_type_arg ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+assoc_type_arg_type_bound_lists(
+  int id: @assoc_type_arg ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+await_exprs(
+  unique int id: @await_expr
+);
+
+#keyset[id, index]
+await_expr_attrs(
+  int id: @await_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+await_expr_exprs(
+  int id: @await_expr ref,
+  int expr: @expr ref
+);
+
+become_exprs(
+  unique int id: @become_expr
+);
+
+#keyset[id, index]
+become_expr_attrs(
+  int id: @become_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+become_expr_exprs(
+  int id: @become_expr ref,
+  int expr: @expr ref
+);
+
+binary_exprs(
+  unique int id: @binary_expr
+);
+
+#keyset[id, index]
+binary_expr_attrs(
+  int id: @binary_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+binary_expr_lhs(
+  int id: @binary_expr ref,
+  int lhs: @expr ref
+);
+
+#keyset[id]
+binary_expr_operator_names(
+  int id: @binary_expr ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+binary_expr_rhs(
+  int id: @binary_expr ref,
+  int rhs: @expr ref
+);
+
+box_pats(
+  unique int id: @box_pat
+);
+
+#keyset[id]
+box_pat_pats(
+  int id: @box_pat ref,
+  int pat: @pat ref
+);
+
+break_exprs(
+  unique int id: @break_expr
+);
+
+#keyset[id, index]
+break_expr_attrs(
+  int id: @break_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+break_expr_exprs(
+  int id: @break_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+break_expr_lifetimes(
+  int id: @break_expr ref,
+  int lifetime: @lifetime ref
+);
+
+call_exprs(
+  unique int id: @call_expr
+);
+
+#keyset[id]
+call_expr_arg_lists(
+  int id: @call_expr ref,
+  int arg_list: @arg_list ref
+);
+
+#keyset[id, index]
+call_expr_attrs(
+  int id: @call_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+call_expr_functions(
+  int id: @call_expr ref,
+  int function: @expr ref
+);
+
+cast_exprs(
+  unique int id: @cast_expr
+);
+
+#keyset[id, index]
+cast_expr_attrs(
+  int id: @cast_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+cast_expr_exprs(
+  int id: @cast_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+cast_expr_type_reprs(
+  int id: @cast_expr ref,
+  int type_repr: @type_repr ref
+);
+
+closure_exprs(
+  unique int id: @closure_expr
+);
+
+#keyset[id]
+closure_expr_closure_bodies(
+  int id: @closure_expr ref,
+  int closure_body: @expr ref
+);
+
+#keyset[id]
+closure_expr_for_binders(
+  int id: @closure_expr ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+closure_expr_is_async(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_const(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_gen(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_move(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_static(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_ret_types(
+  int id: @closure_expr ref,
+  int ret_type: @ret_type_repr ref
+);
+
+comments(
+  unique int id: @comment,
+  int parent: @ast_node ref,
+  string text: string ref
+);
+
+const_args(
+  unique int id: @const_arg
+);
+
+#keyset[id]
+const_arg_exprs(
+  int id: @const_arg ref,
+  int expr: @expr ref
+);
+
+const_block_pats(
+  unique int id: @const_block_pat
+);
+
+#keyset[id]
+const_block_pat_block_exprs(
+  int id: @const_block_pat ref,
+  int block_expr: @block_expr ref
+);
+
+#keyset[id]
+const_block_pat_is_const(
+  int id: @const_block_pat ref
+);
+
+const_params(
+  unique int id: @const_param
+);
+
+#keyset[id, index]
+const_param_attrs(
+  int id: @const_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+const_param_default_vals(
+  int id: @const_param ref,
+  int default_val: @const_arg ref
+);
+
+#keyset[id]
+const_param_is_const(
+  int id: @const_param ref
+);
+
+#keyset[id]
+const_param_names(
+  int id: @const_param ref,
+  int name: @name ref
+);
+
+#keyset[id]
+const_param_type_reprs(
+  int id: @const_param ref,
+  int type_repr: @type_repr ref
+);
+
+continue_exprs(
+  unique int id: @continue_expr
+);
+
+#keyset[id, index]
+continue_expr_attrs(
+  int id: @continue_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+continue_expr_lifetimes(
+  int id: @continue_expr ref,
+  int lifetime: @lifetime ref
+);
+
+dyn_trait_type_reprs(
+  unique int id: @dyn_trait_type_repr
+);
+
+#keyset[id]
+dyn_trait_type_repr_type_bound_lists(
+  int id: @dyn_trait_type_repr ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+expr_stmts(
+  unique int id: @expr_stmt
+);
+
+#keyset[id]
+expr_stmt_exprs(
+  int id: @expr_stmt ref,
+  int expr: @expr ref
+);
+
+field_exprs(
+  unique int id: @field_expr
+);
+
+#keyset[id, index]
+field_expr_attrs(
+  int id: @field_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+field_expr_containers(
+  int id: @field_expr ref,
+  int container: @expr ref
+);
+
+#keyset[id]
+field_expr_identifiers(
+  int id: @field_expr ref,
+  int identifier: @name_ref ref
+);
+
+fn_ptr_type_reprs(
+  unique int id: @fn_ptr_type_repr
+);
+
+#keyset[id]
+fn_ptr_type_repr_abis(
+  int id: @fn_ptr_type_repr ref,
+  int abi: @abi ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_async(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_const(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_unsafe(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_param_lists(
+  int id: @fn_ptr_type_repr ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_ret_types(
+  int id: @fn_ptr_type_repr ref,
+  int ret_type: @ret_type_repr ref
+);
+
+for_type_reprs(
+  unique int id: @for_type_repr
+);
+
+#keyset[id]
+for_type_repr_for_binders(
+  int id: @for_type_repr ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+for_type_repr_type_reprs(
+  int id: @for_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+format_args_exprs(
+  unique int id: @format_args_expr
+);
+
+#keyset[id, index]
+format_args_expr_args(
+  int id: @format_args_expr ref,
+  int index: int ref,
+  int arg: @format_args_arg ref
+);
+
+#keyset[id, index]
+format_args_expr_attrs(
+  int id: @format_args_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+format_args_expr_templates(
+  int id: @format_args_expr ref,
+  int template: @expr ref
+);
+
+ident_pats(
+  unique int id: @ident_pat
+);
+
+#keyset[id, index]
+ident_pat_attrs(
+  int id: @ident_pat ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+ident_pat_is_mut(
+  int id: @ident_pat ref
+);
+
+#keyset[id]
+ident_pat_is_ref(
+  int id: @ident_pat ref
+);
+
+#keyset[id]
+ident_pat_names(
+  int id: @ident_pat ref,
+  int name: @name ref
+);
+
+#keyset[id]
+ident_pat_pats(
+  int id: @ident_pat ref,
+  int pat: @pat ref
+);
+
+if_exprs(
+  unique int id: @if_expr
+);
+
+#keyset[id, index]
+if_expr_attrs(
+  int id: @if_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+if_expr_conditions(
+  int id: @if_expr ref,
+  int condition: @expr ref
+);
+
+#keyset[id]
+if_expr_elses(
+  int id: @if_expr ref,
+  int else: @expr ref
+);
+
+#keyset[id]
+if_expr_thens(
+  int id: @if_expr ref,
+  int then: @block_expr ref
+);
+
+impl_trait_type_reprs(
+  unique int id: @impl_trait_type_repr
+);
+
+#keyset[id]
+impl_trait_type_repr_type_bound_lists(
+  int id: @impl_trait_type_repr ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+index_exprs(
+  unique int id: @index_expr
+);
+
+#keyset[id, index]
+index_expr_attrs(
+  int id: @index_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+index_expr_bases(
+  int id: @index_expr ref,
+  int base: @expr ref
+);
+
+#keyset[id]
+index_expr_indices(
+  int id: @index_expr ref,
+  int index: @expr ref
+);
+
+infer_type_reprs(
+  unique int id: @infer_type_repr
+);
+
+@item =
+  @asm_expr
+| @assoc_item
+| @extern_block
+| @extern_crate
+| @extern_item
+| @impl
+| @macro_def
+| @macro_rules
+| @module
+| @trait
+| @trait_alias
+| @type_item
+| @use
+;
+
+#keyset[id]
+item_attribute_macro_expansions(
+  int id: @item ref,
+  int attribute_macro_expansion: @macro_items ref
+);
+
+@labelable_expr =
+  @block_expr
+| @looping_expr
+;
+
+#keyset[id]
+labelable_expr_labels(
+  int id: @labelable_expr ref,
+  int label: @label ref
+);
+
+let_exprs(
+  unique int id: @let_expr
+);
+
+#keyset[id, index]
+let_expr_attrs(
+  int id: @let_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+let_expr_scrutinees(
+  int id: @let_expr ref,
+  int scrutinee: @expr ref
+);
+
+#keyset[id]
+let_expr_pats(
+  int id: @let_expr ref,
+  int pat: @pat ref
+);
+
+let_stmts(
+  unique int id: @let_stmt
+);
+
+#keyset[id, index]
+let_stmt_attrs(
+  int id: @let_stmt ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+let_stmt_initializers(
+  int id: @let_stmt ref,
+  int initializer: @expr ref
+);
+
+#keyset[id]
+let_stmt_let_elses(
+  int id: @let_stmt ref,
+  int let_else: @let_else ref
+);
+
+#keyset[id]
+let_stmt_pats(
+  int id: @let_stmt ref,
+  int pat: @pat ref
+);
+
+#keyset[id]
+let_stmt_type_reprs(
+  int id: @let_stmt ref,
+  int type_repr: @type_repr ref
+);
+
+lifetimes(
+  unique int id: @lifetime
+);
+
+#keyset[id]
+lifetime_texts(
+  int id: @lifetime ref,
+  string text: string ref
+);
+
+lifetime_args(
+  unique int id: @lifetime_arg
+);
+
+#keyset[id]
+lifetime_arg_lifetimes(
+  int id: @lifetime_arg ref,
+  int lifetime: @lifetime ref
+);
+
+lifetime_params(
+  unique int id: @lifetime_param
+);
+
+#keyset[id, index]
+lifetime_param_attrs(
+  int id: @lifetime_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+lifetime_param_lifetimes(
+  int id: @lifetime_param ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+lifetime_param_type_bound_lists(
+  int id: @lifetime_param ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+literal_exprs(
+  unique int id: @literal_expr
+);
+
+#keyset[id, index]
+literal_expr_attrs(
+  int id: @literal_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+literal_expr_text_values(
+  int id: @literal_expr ref,
+  string text_value: string ref
+);
+
+literal_pats(
+  unique int id: @literal_pat
+);
+
+#keyset[id]
+literal_pat_literals(
+  int id: @literal_pat ref,
+  int literal: @literal_expr ref
+);
+
+macro_exprs(
+  unique int id: @macro_expr
+);
+
+#keyset[id]
+macro_expr_macro_calls(
+  int id: @macro_expr ref,
+  int macro_call: @macro_call ref
+);
+
+macro_pats(
+  unique int id: @macro_pat
+);
+
+#keyset[id]
+macro_pat_macro_calls(
+  int id: @macro_pat ref,
+  int macro_call: @macro_call ref
+);
+
+macro_type_reprs(
+  unique int id: @macro_type_repr
+);
+
+#keyset[id]
+macro_type_repr_macro_calls(
+  int id: @macro_type_repr ref,
+  int macro_call: @macro_call ref
+);
+
+match_exprs(
+  unique int id: @match_expr
+);
+
+#keyset[id, index]
+match_expr_attrs(
+  int id: @match_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+match_expr_scrutinees(
+  int id: @match_expr ref,
+  int scrutinee: @expr ref
+);
+
+#keyset[id]
+match_expr_match_arm_lists(
+  int id: @match_expr ref,
+  int match_arm_list: @match_arm_list ref
+);
+
+method_call_exprs(
+  unique int id: @method_call_expr
+);
+
+#keyset[id]
+method_call_expr_arg_lists(
+  int id: @method_call_expr ref,
+  int arg_list: @arg_list ref
+);
+
+#keyset[id, index]
+method_call_expr_attrs(
+  int id: @method_call_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+method_call_expr_generic_arg_lists(
+  int id: @method_call_expr ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+method_call_expr_identifiers(
+  int id: @method_call_expr ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+method_call_expr_receivers(
+  int id: @method_call_expr ref,
+  int receiver: @expr ref
+);
+
+name_refs(
+  unique int id: @name_ref
+);
+
+#keyset[id]
+name_ref_texts(
+  int id: @name_ref ref,
+  string text: string ref
+);
+
+never_type_reprs(
+  unique int id: @never_type_repr
+);
+
+offset_of_exprs(
+  unique int id: @offset_of_expr
+);
+
+#keyset[id, index]
+offset_of_expr_attrs(
+  int id: @offset_of_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+offset_of_expr_fields(
+  int id: @offset_of_expr ref,
+  int index: int ref,
+  int field: @name_ref ref
+);
+
+#keyset[id]
+offset_of_expr_type_reprs(
+  int id: @offset_of_expr ref,
+  int type_repr: @type_repr ref
+);
+
+or_pats(
+  unique int id: @or_pat
+);
+
+#keyset[id, index]
+or_pat_pats(
+  int id: @or_pat ref,
+  int index: int ref,
+  int pat: @pat ref
+);
+
+params(
+  unique int id: @param
+);
+
+#keyset[id]
+param_pats(
+  int id: @param ref,
+  int pat: @pat ref
+);
+
+paren_exprs(
+  unique int id: @paren_expr
+);
+
+#keyset[id, index]
+paren_expr_attrs(
+  int id: @paren_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+paren_expr_exprs(
+  int id: @paren_expr ref,
+  int expr: @expr ref
+);
+
+paren_pats(
+  unique int id: @paren_pat
+);
+
+#keyset[id]
+paren_pat_pats(
+  int id: @paren_pat ref,
+  int pat: @pat ref
+);
+
+paren_type_reprs(
+  unique int id: @paren_type_repr
+);
+
+#keyset[id]
+paren_type_repr_type_reprs(
+  int id: @paren_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+@path_expr_base =
+  @path_expr
+;
+
+path_pats(
+  unique int id: @path_pat
+);
+
+path_type_reprs(
+  unique int id: @path_type_repr
+);
+
+#keyset[id]
+path_type_repr_paths(
+  int id: @path_type_repr ref,
+  int path: @path ref
+);
+
+prefix_exprs(
+  unique int id: @prefix_expr
+);
+
+#keyset[id, index]
+prefix_expr_attrs(
+  int id: @prefix_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+prefix_expr_exprs(
+  int id: @prefix_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+prefix_expr_operator_names(
+  int id: @prefix_expr ref,
+  string operator_name: string ref
+);
+
+ptr_type_reprs(
+  unique int id: @ptr_type_repr
+);
+
+#keyset[id]
+ptr_type_repr_is_const(
+  int id: @ptr_type_repr ref
+);
+
+#keyset[id]
+ptr_type_repr_is_mut(
+  int id: @ptr_type_repr ref
+);
+
+#keyset[id]
+ptr_type_repr_type_reprs(
+  int id: @ptr_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+range_exprs(
+  unique int id: @range_expr
+);
+
+#keyset[id, index]
+range_expr_attrs(
+  int id: @range_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+range_expr_ends(
+  int id: @range_expr ref,
+  int end: @expr ref
+);
+
+#keyset[id]
+range_expr_operator_names(
+  int id: @range_expr ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+range_expr_starts(
+  int id: @range_expr ref,
+  int start: @expr ref
+);
+
+range_pats(
+  unique int id: @range_pat
+);
+
+#keyset[id]
+range_pat_ends(
+  int id: @range_pat ref,
+  int end: @pat ref
+);
+
+#keyset[id]
+range_pat_operator_names(
+  int id: @range_pat ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+range_pat_starts(
+  int id: @range_pat ref,
+  int start: @pat ref
+);
+
+ref_exprs(
+  unique int id: @ref_expr
+);
+
+#keyset[id, index]
+ref_expr_attrs(
+  int id: @ref_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+ref_expr_exprs(
+  int id: @ref_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+ref_expr_is_const(
+  int id: @ref_expr ref
+);
+
+#keyset[id]
+ref_expr_is_mut(
+  int id: @ref_expr ref
+);
+
+#keyset[id]
+ref_expr_is_raw(
+  int id: @ref_expr ref
+);
+
+ref_pats(
+  unique int id: @ref_pat
+);
+
+#keyset[id]
+ref_pat_is_mut(
+  int id: @ref_pat ref
+);
+
+#keyset[id]
+ref_pat_pats(
+  int id: @ref_pat ref,
+  int pat: @pat ref
+);
+
+ref_type_reprs(
+  unique int id: @ref_type_repr
+);
+
+#keyset[id]
+ref_type_repr_is_mut(
+  int id: @ref_type_repr ref
+);
+
+#keyset[id]
+ref_type_repr_lifetimes(
+  int id: @ref_type_repr ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+ref_type_repr_type_reprs(
+  int id: @ref_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+rest_pats(
+  unique int id: @rest_pat
+);
+
+#keyset[id, index]
+rest_pat_attrs(
+  int id: @rest_pat ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+return_exprs(
+  unique int id: @return_expr
+);
+
+#keyset[id, index]
+return_expr_attrs(
+  int id: @return_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+return_expr_exprs(
+  int id: @return_expr ref,
+  int expr: @expr ref
+);
+
+self_params(
+  unique int id: @self_param
+);
+
+#keyset[id]
+self_param_is_ref(
+  int id: @self_param ref
+);
+
+#keyset[id]
+self_param_is_mut(
+  int id: @self_param ref
+);
+
+#keyset[id]
+self_param_lifetimes(
+  int id: @self_param ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+self_param_names(
+  int id: @self_param ref,
+  int name: @name ref
+);
+
+slice_pats(
+  unique int id: @slice_pat
+);
+
+#keyset[id, index]
+slice_pat_pats(
+  int id: @slice_pat ref,
+  int index: int ref,
+  int pat: @pat ref
+);
+
+slice_type_reprs(
+  unique int id: @slice_type_repr
+);
+
+#keyset[id]
+slice_type_repr_type_reprs(
+  int id: @slice_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+struct_exprs(
+  unique int id: @struct_expr
+);
+
+#keyset[id]
+struct_expr_struct_expr_field_lists(
+  int id: @struct_expr ref,
+  int struct_expr_field_list: @struct_expr_field_list ref
+);
+
+struct_field_lists(
+  unique int id: @struct_field_list
+);
+
+#keyset[id, index]
+struct_field_list_fields(
+  int id: @struct_field_list ref,
+  int index: int ref,
+  int field: @struct_field ref
+);
+
+struct_pats(
+  unique int id: @struct_pat
+);
+
+#keyset[id]
+struct_pat_struct_pat_field_lists(
+  int id: @struct_pat ref,
+  int struct_pat_field_list: @struct_pat_field_list ref
+);
+
+try_exprs(
+  unique int id: @try_expr
+);
+
+#keyset[id, index]
+try_expr_attrs(
+  int id: @try_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+try_expr_exprs(
+  int id: @try_expr ref,
+  int expr: @expr ref
+);
+
+tuple_exprs(
+  unique int id: @tuple_expr
+);
+
+#keyset[id, index]
+tuple_expr_attrs(
+  int id: @tuple_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+tuple_expr_fields(
+  int id: @tuple_expr ref,
+  int index: int ref,
+  int field: @expr ref
+);
+
+tuple_field_lists(
+  unique int id: @tuple_field_list
+);
+
+#keyset[id, index]
+tuple_field_list_fields(
+  int id: @tuple_field_list ref,
+  int index: int ref,
+  int field: @tuple_field ref
+);
+
+tuple_pats(
+  unique int id: @tuple_pat
+);
+
+#keyset[id, index]
+tuple_pat_fields(
+  int id: @tuple_pat ref,
+  int index: int ref,
+  int field: @pat ref
+);
+
+tuple_struct_pats(
+  unique int id: @tuple_struct_pat
+);
+
+#keyset[id, index]
+tuple_struct_pat_fields(
+  int id: @tuple_struct_pat ref,
+  int index: int ref,
+  int field: @pat ref
+);
+
+tuple_type_reprs(
+  unique int id: @tuple_type_repr
+);
+
+#keyset[id, index]
+tuple_type_repr_fields(
+  int id: @tuple_type_repr ref,
+  int index: int ref,
+  int field: @type_repr ref
+);
+
+type_args(
+  unique int id: @type_arg
+);
+
+#keyset[id]
+type_arg_type_reprs(
+  int id: @type_arg ref,
+  int type_repr: @type_repr ref
+);
+
+type_params(
+  unique int id: @type_param
+);
+
+#keyset[id, index]
+type_param_attrs(
+  int id: @type_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_param_default_types(
+  int id: @type_param ref,
+  int default_type: @type_repr ref
+);
+
+#keyset[id]
+type_param_names(
+  int id: @type_param ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_param_type_bound_lists(
+  int id: @type_param ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+underscore_exprs(
+  unique int id: @underscore_expr
+);
+
+#keyset[id, index]
+underscore_expr_attrs(
+  int id: @underscore_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+variants(
+  unique int id: @variant
+);
+
+#keyset[id, index]
+variant_attrs(
+  int id: @variant ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+variant_discriminants(
+  int id: @variant ref,
+  int discriminant: @expr ref
+);
+
+#keyset[id]
+variant_field_lists(
+  int id: @variant ref,
+  int field_list: @field_list ref
+);
+
+#keyset[id]
+variant_names(
+  int id: @variant ref,
+  int name: @name ref
+);
+
+#keyset[id]
+variant_visibilities(
+  int id: @variant ref,
+  int visibility: @visibility ref
+);
+
+wildcard_pats(
+  unique int id: @wildcard_pat
+);
+
+yeet_exprs(
+  unique int id: @yeet_expr
+);
+
+#keyset[id, index]
+yeet_expr_attrs(
+  int id: @yeet_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+yeet_expr_exprs(
+  int id: @yeet_expr ref,
+  int expr: @expr ref
+);
+
+yield_exprs(
+  unique int id: @yield_expr
+);
+
+#keyset[id, index]
+yield_expr_attrs(
+  int id: @yield_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+yield_expr_exprs(
+  int id: @yield_expr ref,
+  int expr: @expr ref
+);
+
+asm_exprs(
+  unique int id: @asm_expr
+);
+
+#keyset[id, index]
+asm_expr_asm_pieces(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int asm_piece: @asm_piece ref
+);
+
+#keyset[id, index]
+asm_expr_attrs(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+asm_expr_templates(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int template: @expr ref
+);
+
+@assoc_item =
+  @const
+| @function
+| @macro_call
+| @type_alias
+;
+
+block_exprs(
+  unique int id: @block_expr
+);
+
+#keyset[id, index]
+block_expr_attrs(
+  int id: @block_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+block_expr_is_async(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_const(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_gen(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_move(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_try(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_unsafe(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_stmt_lists(
+  int id: @block_expr ref,
+  int stmt_list: @stmt_list ref
+);
+
+extern_blocks(
+  unique int id: @extern_block
+);
+
+#keyset[id]
+extern_block_abis(
+  int id: @extern_block ref,
+  int abi: @abi ref
+);
+
+#keyset[id, index]
+extern_block_attrs(
+  int id: @extern_block ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+extern_block_extern_item_lists(
+  int id: @extern_block ref,
+  int extern_item_list: @extern_item_list ref
+);
+
+#keyset[id]
+extern_block_is_unsafe(
+  int id: @extern_block ref
+);
+
+extern_crates(
+  unique int id: @extern_crate
+);
+
+#keyset[id, index]
+extern_crate_attrs(
+  int id: @extern_crate ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+extern_crate_identifiers(
+  int id: @extern_crate ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+extern_crate_renames(
+  int id: @extern_crate ref,
+  int rename: @rename ref
+);
+
+#keyset[id]
+extern_crate_visibilities(
+  int id: @extern_crate ref,
+  int visibility: @visibility ref
+);
+
+@extern_item =
+  @function
+| @macro_call
+| @static
+| @type_alias
+;
+
+impls(
+  unique int id: @impl
+);
+
+#keyset[id]
+impl_assoc_item_lists(
+  int id: @impl ref,
+  int assoc_item_list: @assoc_item_list ref
+);
+
+#keyset[id, index]
+impl_attrs(
+  int id: @impl ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+impl_generic_param_lists(
+  int id: @impl ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+impl_is_const(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_is_default(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_is_unsafe(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_self_ties(
+  int id: @impl ref,
+  int self_ty: @type_repr ref
+);
+
+#keyset[id]
+impl_traits(
+  int id: @impl ref,
+  int trait: @type_repr ref
+);
+
+#keyset[id]
+impl_visibilities(
+  int id: @impl ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+impl_where_clauses(
+  int id: @impl ref,
+  int where_clause: @where_clause ref
+);
+
+@looping_expr =
+  @for_expr
+| @loop_expr
+| @while_expr
+;
+
+#keyset[id]
+looping_expr_loop_bodies(
+  int id: @looping_expr ref,
+  int loop_body: @block_expr ref
+);
+
+macro_defs(
+  unique int id: @macro_def
+);
+
+#keyset[id]
+macro_def_args(
+  int id: @macro_def ref,
+  int args: @token_tree ref
+);
+
+#keyset[id, index]
+macro_def_attrs(
+  int id: @macro_def ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_def_bodies(
+  int id: @macro_def ref,
+  int body: @token_tree ref
+);
+
+#keyset[id]
+macro_def_names(
+  int id: @macro_def ref,
+  int name: @name ref
+);
+
+#keyset[id]
+macro_def_visibilities(
+  int id: @macro_def ref,
+  int visibility: @visibility ref
+);
+
+macro_rules(
+  unique int id: @macro_rules
+);
+
+#keyset[id, index]
+macro_rules_attrs(
+  int id: @macro_rules ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_rules_names(
+  int id: @macro_rules ref,
+  int name: @name ref
+);
+
+#keyset[id]
+macro_rules_token_trees(
+  int id: @macro_rules ref,
+  int token_tree: @token_tree ref
+);
+
+#keyset[id]
+macro_rules_visibilities(
+  int id: @macro_rules ref,
+  int visibility: @visibility ref
+);
+
+modules(
+  unique int id: @module
+);
+
+#keyset[id, index]
+module_attrs(
+  int id: @module ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+module_item_lists(
+  int id: @module ref,
+  int item_list: @item_list ref
+);
+
+#keyset[id]
+module_names(
+  int id: @module ref,
+  int name: @name ref
+);
+
+#keyset[id]
+module_visibilities(
+  int id: @module ref,
+  int visibility: @visibility ref
+);
+
+path_exprs(
+  unique int id: @path_expr
+);
+
+#keyset[id, index]
+path_expr_attrs(
+  int id: @path_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+traits(
+  unique int id: @trait
+);
+
+#keyset[id]
+trait_assoc_item_lists(
+  int id: @trait ref,
+  int assoc_item_list: @assoc_item_list ref
+);
+
+#keyset[id, index]
+trait_attrs(
+  int id: @trait ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+trait_generic_param_lists(
+  int id: @trait ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+trait_is_auto(
+  int id: @trait ref
+);
+
+#keyset[id]
+trait_is_unsafe(
+  int id: @trait ref
+);
+
+#keyset[id]
+trait_names(
+  int id: @trait ref,
+  int name: @name ref
+);
+
+#keyset[id]
+trait_type_bound_lists(
+  int id: @trait ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+trait_visibilities(
+  int id: @trait ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+trait_where_clauses(
+  int id: @trait ref,
+  int where_clause: @where_clause ref
+);
+
+trait_aliases(
+  unique int id: @trait_alias
+);
+
+#keyset[id, index]
+trait_alias_attrs(
+  int id: @trait_alias ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+trait_alias_generic_param_lists(
+  int id: @trait_alias ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+trait_alias_names(
+  int id: @trait_alias ref,
+  int name: @name ref
+);
+
+#keyset[id]
+trait_alias_type_bound_lists(
+  int id: @trait_alias ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+trait_alias_visibilities(
+  int id: @trait_alias ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+trait_alias_where_clauses(
+  int id: @trait_alias ref,
+  int where_clause: @where_clause ref
+);
+
+@type_item =
+  @enum
+| @struct
+| @union
+;
+
+#keyset[id, index]
+type_item_derive_macro_expansions(
+  int id: @type_item ref,
+  int index: int ref,
+  int derive_macro_expansion: @macro_items ref
+);
+
+#keyset[id, index]
+type_item_attrs(
+  int id: @type_item ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_item_generic_param_lists(
+  int id: @type_item ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+type_item_names(
+  int id: @type_item ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_item_visibilities(
+  int id: @type_item ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+type_item_where_clauses(
+  int id: @type_item ref,
+  int where_clause: @where_clause ref
+);
+
+uses(
+  unique int id: @use
+);
+
+#keyset[id, index]
+use_attrs(
+  int id: @use ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+use_use_trees(
+  int id: @use ref,
+  int use_tree: @use_tree ref
+);
+
+#keyset[id]
+use_visibilities(
+  int id: @use ref,
+  int visibility: @visibility ref
+);
+
+consts(
+  unique int id: @const
+);
+
+#keyset[id, index]
+const_attrs(
+  int id: @const ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+const_bodies(
+  int id: @const ref,
+  int body: @expr ref
+);
+
+#keyset[id]
+const_generic_param_lists(
+  int id: @const ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+const_is_const(
+  int id: @const ref
+);
+
+#keyset[id]
+const_is_default(
+  int id: @const ref
+);
+
+#keyset[id]
+const_names(
+  int id: @const ref,
+  int name: @name ref
+);
+
+#keyset[id]
+const_type_reprs(
+  int id: @const ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+const_visibilities(
+  int id: @const ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+const_where_clauses(
+  int id: @const ref,
+  int where_clause: @where_clause ref
+);
+
+#keyset[id]
+const_has_implementation(
+  int id: @const ref
+);
+
+enums(
+  unique int id: @enum
+);
+
+#keyset[id]
+enum_variant_lists(
+  int id: @enum ref,
+  int variant_list: @variant_list ref
+);
+
+for_exprs(
+  unique int id: @for_expr
+);
+
+#keyset[id, index]
+for_expr_attrs(
+  int id: @for_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+for_expr_iterables(
+  int id: @for_expr ref,
+  int iterable: @expr ref
+);
+
+#keyset[id]
+for_expr_pats(
+  int id: @for_expr ref,
+  int pat: @pat ref
+);
+
+functions(
+  unique int id: @function
+);
+
+#keyset[id]
+function_abis(
+  int id: @function ref,
+  int abi: @abi ref
+);
+
+#keyset[id]
+function_function_bodies(
+  int id: @function ref,
+  int function_body: @block_expr ref
+);
+
+#keyset[id]
+function_generic_param_lists(
+  int id: @function ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+function_is_async(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_const(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_default(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_gen(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_unsafe(
+  int id: @function ref
+);
+
+#keyset[id]
+function_names(
+  int id: @function ref,
+  int name: @name ref
+);
+
+#keyset[id]
+function_ret_types(
+  int id: @function ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+function_visibilities(
+  int id: @function ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+function_where_clauses(
+  int id: @function ref,
+  int where_clause: @where_clause ref
+);
+
+#keyset[id]
+function_has_implementation(
+  int id: @function ref
+);
+
+loop_exprs(
+  unique int id: @loop_expr
+);
+
+#keyset[id, index]
+loop_expr_attrs(
+  int id: @loop_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+macro_calls(
+  unique int id: @macro_call
+);
+
+#keyset[id, index]
+macro_call_attrs(
+  int id: @macro_call ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_call_paths(
+  int id: @macro_call ref,
+  int path: @path ref
+);
+
+#keyset[id]
+macro_call_token_trees(
+  int id: @macro_call ref,
+  int token_tree: @token_tree ref
+);
+
+#keyset[id]
+macro_call_macro_call_expansions(
+  int id: @macro_call ref,
+  int macro_call_expansion: @ast_node ref
+);
+
+statics(
+  unique int id: @static
+);
+
+#keyset[id, index]
+static_attrs(
+  int id: @static ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+static_bodies(
+  int id: @static ref,
+  int body: @expr ref
+);
+
+#keyset[id]
+static_is_mut(
+  int id: @static ref
+);
+
+#keyset[id]
+static_is_static(
+  int id: @static ref
+);
+
+#keyset[id]
+static_is_unsafe(
+  int id: @static ref
+);
+
+#keyset[id]
+static_names(
+  int id: @static ref,
+  int name: @name ref
+);
+
+#keyset[id]
+static_type_reprs(
+  int id: @static ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+static_visibilities(
+  int id: @static ref,
+  int visibility: @visibility ref
+);
+
+structs(
+  unique int id: @struct
+);
+
+#keyset[id]
+struct_field_lists_(
+  int id: @struct ref,
+  int field_list: @field_list ref
+);
+
+type_aliases(
+  unique int id: @type_alias
+);
+
+#keyset[id, index]
+type_alias_attrs(
+  int id: @type_alias ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_alias_generic_param_lists(
+  int id: @type_alias ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+type_alias_is_default(
+  int id: @type_alias ref
+);
+
+#keyset[id]
+type_alias_names(
+  int id: @type_alias ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_alias_type_reprs(
+  int id: @type_alias ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+type_alias_type_bound_lists(
+  int id: @type_alias ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+type_alias_visibilities(
+  int id: @type_alias ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+type_alias_where_clauses(
+  int id: @type_alias ref,
+  int where_clause: @where_clause ref
+);
+
+unions(
+  unique int id: @union
+);
+
+#keyset[id]
+union_struct_field_lists(
+  int id: @union ref,
+  int struct_field_list: @struct_field_list ref
+);
+
+while_exprs(
+  unique int id: @while_expr
+);
+
+#keyset[id, index]
+while_expr_attrs(
+  int id: @while_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+while_expr_conditions(
+  int id: @while_expr ref,
+  int condition: @expr ref
+);
diff --git a/rust/downgrades/66a489863649185f4a9770f894505803059a1312/upgrade.properties b/rust/downgrades/66a489863649185f4a9770f894505803059a1312/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/rust/downgrades/66a489863649185f4a9770f894505803059a1312/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/rust/ql/lib/rust.dbscheme b/rust/ql/lib/rust.dbscheme
index 90861289dd4c..66a489863649 100644
--- a/rust/ql/lib/rust.dbscheme
+++ b/rust/ql/lib/rust.dbscheme
@@ -109,11 +109,23 @@ yaml_locations(unique int locatable: @yaml_locatable ref,
 @yaml_locatable = @yaml_node | @yaml_error;
 
 /*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
 databaseMetadata(
   string metadataKey: string ref,
   string value: string ref
 );
 
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
 overlayChangedFiles(
   string path: string ref
 );
diff --git a/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/old.dbscheme b/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/old.dbscheme
new file mode 100644
index 000000000000..90861289dd4c
--- /dev/null
+++ b/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/old.dbscheme
@@ -0,0 +1,3544 @@
+// generated by codegen, do not edit
+
+// from ../shared/tree-sitter-extractor/src/generator/prefix.dbscheme
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Empty location -*/
+
+empty_location(
+  int location: @location_default ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- Diagnostic messages: severity -*/
+
+case @diagnostic.severity of
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
+;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Database metadata -*/
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+overlayChangedFiles(
+  string path: string ref
+);
+
+
+// from prefix.dbscheme
+#keyset[id]
+locatable_locations(
+  int id: @locatable ref,
+  int location: @location_default ref
+);
+
+
+// from schema
+
+@element =
+  @extractor_step
+| @locatable
+| @named_crate
+| @unextracted
+;
+
+extractor_steps(
+  unique int id: @extractor_step,
+  string action: string ref,
+  int duration_ms: int ref
+);
+
+#keyset[id]
+extractor_step_files(
+  int id: @extractor_step ref,
+  int file: @file ref
+);
+
+@locatable =
+  @ast_node
+| @crate
+;
+
+named_crates(
+  unique int id: @named_crate,
+  string name: string ref,
+  int crate: @crate ref
+);
+
+@unextracted =
+  @missing
+| @unimplemented
+;
+
+@ast_node =
+  @abi
+| @addressable
+| @arg_list
+| @asm_dir_spec
+| @asm_operand
+| @asm_operand_expr
+| @asm_option
+| @asm_piece
+| @asm_reg_spec
+| @assoc_item_list
+| @attr
+| @callable
+| @expr
+| @extern_item_list
+| @field_list
+| @for_binder
+| @format_args_arg
+| @generic_arg
+| @generic_arg_list
+| @generic_param
+| @generic_param_list
+| @item_list
+| @label
+| @let_else
+| @macro_items
+| @match_arm
+| @match_arm_list
+| @match_guard
+| @meta
+| @name
+| @param_base
+| @param_list
+| @parenthesized_arg_list
+| @pat
+| @path
+| @path_ast_node
+| @path_segment
+| @rename
+| @ret_type_repr
+| @return_type_syntax
+| @source_file
+| @stmt
+| @stmt_list
+| @struct_expr_field
+| @struct_expr_field_list
+| @struct_field
+| @struct_pat_field
+| @struct_pat_field_list
+| @token
+| @token_tree
+| @tuple_field
+| @type_bound
+| @type_bound_list
+| @type_repr
+| @use_bound_generic_arg
+| @use_bound_generic_args
+| @use_tree
+| @use_tree_list
+| @variant_list
+| @visibility
+| @where_clause
+| @where_pred
+;
+
+crates(
+  unique int id: @crate
+);
+
+#keyset[id]
+crate_names(
+  int id: @crate ref,
+  string name: string ref
+);
+
+#keyset[id]
+crate_versions(
+  int id: @crate ref,
+  string version: string ref
+);
+
+#keyset[id, index]
+crate_cfg_options(
+  int id: @crate ref,
+  int index: int ref,
+  string cfg_option: string ref
+);
+
+#keyset[id, index]
+crate_named_dependencies(
+  int id: @crate ref,
+  int index: int ref,
+  int named_dependency: @named_crate ref
+);
+
+missings(
+  unique int id: @missing
+);
+
+unimplementeds(
+  unique int id: @unimplemented
+);
+
+abis(
+  unique int id: @abi
+);
+
+#keyset[id]
+abi_abi_strings(
+  int id: @abi ref,
+  string abi_string: string ref
+);
+
+@addressable =
+  @item
+| @variant
+;
+
+arg_lists(
+  unique int id: @arg_list
+);
+
+#keyset[id, index]
+arg_list_args(
+  int id: @arg_list ref,
+  int index: int ref,
+  int arg: @expr ref
+);
+
+asm_dir_specs(
+  unique int id: @asm_dir_spec
+);
+
+@asm_operand =
+  @asm_const
+| @asm_label
+| @asm_reg_operand
+| @asm_sym
+;
+
+asm_operand_exprs(
+  unique int id: @asm_operand_expr
+);
+
+#keyset[id]
+asm_operand_expr_in_exprs(
+  int id: @asm_operand_expr ref,
+  int in_expr: @expr ref
+);
+
+#keyset[id]
+asm_operand_expr_out_exprs(
+  int id: @asm_operand_expr ref,
+  int out_expr: @expr ref
+);
+
+asm_options(
+  unique int id: @asm_option
+);
+
+#keyset[id]
+asm_option_is_raw(
+  int id: @asm_option ref
+);
+
+@asm_piece =
+  @asm_clobber_abi
+| @asm_operand_named
+| @asm_options_list
+;
+
+asm_reg_specs(
+  unique int id: @asm_reg_spec
+);
+
+#keyset[id]
+asm_reg_spec_identifiers(
+  int id: @asm_reg_spec ref,
+  int identifier: @name_ref ref
+);
+
+assoc_item_lists(
+  unique int id: @assoc_item_list
+);
+
+#keyset[id, index]
+assoc_item_list_assoc_items(
+  int id: @assoc_item_list ref,
+  int index: int ref,
+  int assoc_item: @assoc_item ref
+);
+
+#keyset[id, index]
+assoc_item_list_attrs(
+  int id: @assoc_item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+attrs(
+  unique int id: @attr
+);
+
+#keyset[id]
+attr_meta(
+  int id: @attr ref,
+  int meta: @meta ref
+);
+
+@callable =
+  @closure_expr
+| @function
+;
+
+#keyset[id]
+callable_param_lists(
+  int id: @callable ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id, index]
+callable_attrs(
+  int id: @callable ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+@expr =
+  @array_expr_internal
+| @asm_expr
+| @await_expr
+| @become_expr
+| @binary_expr
+| @break_expr
+| @call_expr
+| @cast_expr
+| @closure_expr
+| @continue_expr
+| @field_expr
+| @format_args_expr
+| @if_expr
+| @index_expr
+| @labelable_expr
+| @let_expr
+| @literal_expr
+| @macro_expr
+| @match_expr
+| @method_call_expr
+| @offset_of_expr
+| @paren_expr
+| @path_expr_base
+| @prefix_expr
+| @range_expr
+| @ref_expr
+| @return_expr
+| @struct_expr
+| @try_expr
+| @tuple_expr
+| @underscore_expr
+| @yeet_expr
+| @yield_expr
+;
+
+extern_item_lists(
+  unique int id: @extern_item_list
+);
+
+#keyset[id, index]
+extern_item_list_attrs(
+  int id: @extern_item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+extern_item_list_extern_items(
+  int id: @extern_item_list ref,
+  int index: int ref,
+  int extern_item: @extern_item ref
+);
+
+@field_list =
+  @struct_field_list
+| @tuple_field_list
+;
+
+for_binders(
+  unique int id: @for_binder
+);
+
+#keyset[id]
+for_binder_generic_param_lists(
+  int id: @for_binder ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+format_args_args(
+  unique int id: @format_args_arg
+);
+
+#keyset[id]
+format_args_arg_exprs(
+  int id: @format_args_arg ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+format_args_arg_names(
+  int id: @format_args_arg ref,
+  int name: @name ref
+);
+
+@generic_arg =
+  @assoc_type_arg
+| @const_arg
+| @lifetime_arg
+| @type_arg
+;
+
+generic_arg_lists(
+  unique int id: @generic_arg_list
+);
+
+#keyset[id, index]
+generic_arg_list_generic_args(
+  int id: @generic_arg_list ref,
+  int index: int ref,
+  int generic_arg: @generic_arg ref
+);
+
+@generic_param =
+  @const_param
+| @lifetime_param
+| @type_param
+;
+
+generic_param_lists(
+  unique int id: @generic_param_list
+);
+
+#keyset[id, index]
+generic_param_list_generic_params(
+  int id: @generic_param_list ref,
+  int index: int ref,
+  int generic_param: @generic_param ref
+);
+
+item_lists(
+  unique int id: @item_list
+);
+
+#keyset[id, index]
+item_list_attrs(
+  int id: @item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+item_list_items(
+  int id: @item_list ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+labels(
+  unique int id: @label
+);
+
+#keyset[id]
+label_lifetimes(
+  int id: @label ref,
+  int lifetime: @lifetime ref
+);
+
+let_elses(
+  unique int id: @let_else
+);
+
+#keyset[id]
+let_else_block_exprs(
+  int id: @let_else ref,
+  int block_expr: @block_expr ref
+);
+
+macro_items(
+  unique int id: @macro_items
+);
+
+#keyset[id, index]
+macro_items_items(
+  int id: @macro_items ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+match_arms(
+  unique int id: @match_arm
+);
+
+#keyset[id, index]
+match_arm_attrs(
+  int id: @match_arm ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+match_arm_exprs(
+  int id: @match_arm ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+match_arm_guards(
+  int id: @match_arm ref,
+  int guard: @match_guard ref
+);
+
+#keyset[id]
+match_arm_pats(
+  int id: @match_arm ref,
+  int pat: @pat ref
+);
+
+match_arm_lists(
+  unique int id: @match_arm_list
+);
+
+#keyset[id, index]
+match_arm_list_arms(
+  int id: @match_arm_list ref,
+  int index: int ref,
+  int arm: @match_arm ref
+);
+
+#keyset[id, index]
+match_arm_list_attrs(
+  int id: @match_arm_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+match_guards(
+  unique int id: @match_guard
+);
+
+#keyset[id]
+match_guard_conditions(
+  int id: @match_guard ref,
+  int condition: @expr ref
+);
+
+meta(
+  unique int id: @meta
+);
+
+#keyset[id]
+meta_exprs(
+  int id: @meta ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+meta_is_unsafe(
+  int id: @meta ref
+);
+
+#keyset[id]
+meta_paths(
+  int id: @meta ref,
+  int path: @path ref
+);
+
+#keyset[id]
+meta_token_trees(
+  int id: @meta ref,
+  int token_tree: @token_tree ref
+);
+
+names(
+  unique int id: @name
+);
+
+#keyset[id]
+name_texts(
+  int id: @name ref,
+  string text: string ref
+);
+
+@param_base =
+  @param
+| @self_param
+;
+
+#keyset[id, index]
+param_base_attrs(
+  int id: @param_base ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+param_base_type_reprs(
+  int id: @param_base ref,
+  int type_repr: @type_repr ref
+);
+
+param_lists(
+  unique int id: @param_list
+);
+
+#keyset[id, index]
+param_list_params(
+  int id: @param_list ref,
+  int index: int ref,
+  int param: @param ref
+);
+
+#keyset[id]
+param_list_self_params(
+  int id: @param_list ref,
+  int self_param: @self_param ref
+);
+
+parenthesized_arg_lists(
+  unique int id: @parenthesized_arg_list
+);
+
+#keyset[id, index]
+parenthesized_arg_list_type_args(
+  int id: @parenthesized_arg_list ref,
+  int index: int ref,
+  int type_arg: @type_arg ref
+);
+
+@pat =
+  @box_pat
+| @const_block_pat
+| @ident_pat
+| @literal_pat
+| @macro_pat
+| @or_pat
+| @paren_pat
+| @path_pat
+| @range_pat
+| @ref_pat
+| @rest_pat
+| @slice_pat
+| @struct_pat
+| @tuple_pat
+| @tuple_struct_pat
+| @wildcard_pat
+;
+
+paths(
+  unique int id: @path
+);
+
+#keyset[id]
+path_qualifiers(
+  int id: @path ref,
+  int qualifier: @path ref
+);
+
+#keyset[id]
+path_segments_(
+  int id: @path ref,
+  int segment: @path_segment ref
+);
+
+@path_ast_node =
+  @path_expr
+| @path_pat
+| @struct_expr
+| @struct_pat
+| @tuple_struct_pat
+;
+
+#keyset[id]
+path_ast_node_paths(
+  int id: @path_ast_node ref,
+  int path: @path ref
+);
+
+path_segments(
+  unique int id: @path_segment
+);
+
+#keyset[id]
+path_segment_generic_arg_lists(
+  int id: @path_segment ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+path_segment_identifiers(
+  int id: @path_segment ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+path_segment_parenthesized_arg_lists(
+  int id: @path_segment ref,
+  int parenthesized_arg_list: @parenthesized_arg_list ref
+);
+
+#keyset[id]
+path_segment_ret_types(
+  int id: @path_segment ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+path_segment_return_type_syntaxes(
+  int id: @path_segment ref,
+  int return_type_syntax: @return_type_syntax ref
+);
+
+#keyset[id]
+path_segment_type_reprs(
+  int id: @path_segment ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+path_segment_trait_type_reprs(
+  int id: @path_segment ref,
+  int trait_type_repr: @path_type_repr ref
+);
+
+renames(
+  unique int id: @rename
+);
+
+#keyset[id]
+rename_names(
+  int id: @rename ref,
+  int name: @name ref
+);
+
+ret_type_reprs(
+  unique int id: @ret_type_repr
+);
+
+#keyset[id]
+ret_type_repr_type_reprs(
+  int id: @ret_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+return_type_syntaxes(
+  unique int id: @return_type_syntax
+);
+
+source_files(
+  unique int id: @source_file
+);
+
+#keyset[id, index]
+source_file_attrs(
+  int id: @source_file ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+source_file_items(
+  int id: @source_file ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+@stmt =
+  @expr_stmt
+| @item
+| @let_stmt
+;
+
+stmt_lists(
+  unique int id: @stmt_list
+);
+
+#keyset[id, index]
+stmt_list_attrs(
+  int id: @stmt_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+stmt_list_statements(
+  int id: @stmt_list ref,
+  int index: int ref,
+  int statement: @stmt ref
+);
+
+#keyset[id]
+stmt_list_tail_exprs(
+  int id: @stmt_list ref,
+  int tail_expr: @expr ref
+);
+
+struct_expr_fields(
+  unique int id: @struct_expr_field
+);
+
+#keyset[id, index]
+struct_expr_field_attrs(
+  int id: @struct_expr_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_expr_field_exprs(
+  int id: @struct_expr_field ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+struct_expr_field_identifiers(
+  int id: @struct_expr_field ref,
+  int identifier: @name_ref ref
+);
+
+struct_expr_field_lists(
+  unique int id: @struct_expr_field_list
+);
+
+#keyset[id, index]
+struct_expr_field_list_attrs(
+  int id: @struct_expr_field_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+struct_expr_field_list_fields(
+  int id: @struct_expr_field_list ref,
+  int index: int ref,
+  int field: @struct_expr_field ref
+);
+
+#keyset[id]
+struct_expr_field_list_spreads(
+  int id: @struct_expr_field_list ref,
+  int spread: @expr ref
+);
+
+struct_fields(
+  unique int id: @struct_field
+);
+
+#keyset[id, index]
+struct_field_attrs(
+  int id: @struct_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_field_defaults(
+  int id: @struct_field ref,
+  int default: @expr ref
+);
+
+#keyset[id]
+struct_field_is_unsafe(
+  int id: @struct_field ref
+);
+
+#keyset[id]
+struct_field_names(
+  int id: @struct_field ref,
+  int name: @name ref
+);
+
+#keyset[id]
+struct_field_type_reprs(
+  int id: @struct_field ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+struct_field_visibilities(
+  int id: @struct_field ref,
+  int visibility: @visibility ref
+);
+
+struct_pat_fields(
+  unique int id: @struct_pat_field
+);
+
+#keyset[id, index]
+struct_pat_field_attrs(
+  int id: @struct_pat_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_pat_field_identifiers(
+  int id: @struct_pat_field ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+struct_pat_field_pats(
+  int id: @struct_pat_field ref,
+  int pat: @pat ref
+);
+
+struct_pat_field_lists(
+  unique int id: @struct_pat_field_list
+);
+
+#keyset[id, index]
+struct_pat_field_list_fields(
+  int id: @struct_pat_field_list ref,
+  int index: int ref,
+  int field: @struct_pat_field ref
+);
+
+#keyset[id]
+struct_pat_field_list_rest_pats(
+  int id: @struct_pat_field_list ref,
+  int rest_pat: @rest_pat ref
+);
+
+@token =
+  @comment
+;
+
+token_trees(
+  unique int id: @token_tree
+);
+
+tuple_fields(
+  unique int id: @tuple_field
+);
+
+#keyset[id, index]
+tuple_field_attrs(
+  int id: @tuple_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+tuple_field_type_reprs(
+  int id: @tuple_field ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+tuple_field_visibilities(
+  int id: @tuple_field ref,
+  int visibility: @visibility ref
+);
+
+type_bounds(
+  unique int id: @type_bound
+);
+
+#keyset[id]
+type_bound_for_binders(
+  int id: @type_bound ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+type_bound_is_async(
+  int id: @type_bound ref
+);
+
+#keyset[id]
+type_bound_is_const(
+  int id: @type_bound ref
+);
+
+#keyset[id]
+type_bound_lifetimes(
+  int id: @type_bound ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+type_bound_type_reprs(
+  int id: @type_bound ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+type_bound_use_bound_generic_args(
+  int id: @type_bound ref,
+  int use_bound_generic_args: @use_bound_generic_args ref
+);
+
+type_bound_lists(
+  unique int id: @type_bound_list
+);
+
+#keyset[id, index]
+type_bound_list_bounds(
+  int id: @type_bound_list ref,
+  int index: int ref,
+  int bound: @type_bound ref
+);
+
+@type_repr =
+  @array_type_repr
+| @dyn_trait_type_repr
+| @fn_ptr_type_repr
+| @for_type_repr
+| @impl_trait_type_repr
+| @infer_type_repr
+| @macro_type_repr
+| @never_type_repr
+| @paren_type_repr
+| @path_type_repr
+| @ptr_type_repr
+| @ref_type_repr
+| @slice_type_repr
+| @tuple_type_repr
+;
+
+@use_bound_generic_arg =
+  @lifetime
+| @name_ref
+;
+
+use_bound_generic_args(
+  unique int id: @use_bound_generic_args
+);
+
+#keyset[id, index]
+use_bound_generic_args_use_bound_generic_args(
+  int id: @use_bound_generic_args ref,
+  int index: int ref,
+  int use_bound_generic_arg: @use_bound_generic_arg ref
+);
+
+use_trees(
+  unique int id: @use_tree
+);
+
+#keyset[id]
+use_tree_is_glob(
+  int id: @use_tree ref
+);
+
+#keyset[id]
+use_tree_paths(
+  int id: @use_tree ref,
+  int path: @path ref
+);
+
+#keyset[id]
+use_tree_renames(
+  int id: @use_tree ref,
+  int rename: @rename ref
+);
+
+#keyset[id]
+use_tree_use_tree_lists(
+  int id: @use_tree ref,
+  int use_tree_list: @use_tree_list ref
+);
+
+use_tree_lists(
+  unique int id: @use_tree_list
+);
+
+#keyset[id, index]
+use_tree_list_use_trees(
+  int id: @use_tree_list ref,
+  int index: int ref,
+  int use_tree: @use_tree ref
+);
+
+variant_lists(
+  unique int id: @variant_list
+);
+
+#keyset[id, index]
+variant_list_variants(
+  int id: @variant_list ref,
+  int index: int ref,
+  int variant: @variant ref
+);
+
+visibilities(
+  unique int id: @visibility
+);
+
+#keyset[id]
+visibility_paths(
+  int id: @visibility ref,
+  int path: @path ref
+);
+
+where_clauses(
+  unique int id: @where_clause
+);
+
+#keyset[id, index]
+where_clause_predicates(
+  int id: @where_clause ref,
+  int index: int ref,
+  int predicate: @where_pred ref
+);
+
+where_preds(
+  unique int id: @where_pred
+);
+
+#keyset[id]
+where_pred_for_binders(
+  int id: @where_pred ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+where_pred_lifetimes(
+  int id: @where_pred ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+where_pred_type_reprs(
+  int id: @where_pred ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+where_pred_type_bound_lists(
+  int id: @where_pred ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+array_expr_internals(
+  unique int id: @array_expr_internal
+);
+
+#keyset[id, index]
+array_expr_internal_attrs(
+  int id: @array_expr_internal ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+array_expr_internal_exprs(
+  int id: @array_expr_internal ref,
+  int index: int ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+array_expr_internal_is_semicolon(
+  int id: @array_expr_internal ref
+);
+
+array_type_reprs(
+  unique int id: @array_type_repr
+);
+
+#keyset[id]
+array_type_repr_const_args(
+  int id: @array_type_repr ref,
+  int const_arg: @const_arg ref
+);
+
+#keyset[id]
+array_type_repr_element_type_reprs(
+  int id: @array_type_repr ref,
+  int element_type_repr: @type_repr ref
+);
+
+asm_clobber_abis(
+  unique int id: @asm_clobber_abi
+);
+
+asm_consts(
+  unique int id: @asm_const
+);
+
+#keyset[id]
+asm_const_exprs(
+  int id: @asm_const ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+asm_const_is_const(
+  int id: @asm_const ref
+);
+
+asm_labels(
+  unique int id: @asm_label
+);
+
+#keyset[id]
+asm_label_block_exprs(
+  int id: @asm_label ref,
+  int block_expr: @block_expr ref
+);
+
+asm_operand_nameds(
+  unique int id: @asm_operand_named
+);
+
+#keyset[id]
+asm_operand_named_asm_operands(
+  int id: @asm_operand_named ref,
+  int asm_operand: @asm_operand ref
+);
+
+#keyset[id]
+asm_operand_named_names(
+  int id: @asm_operand_named ref,
+  int name: @name ref
+);
+
+asm_options_lists(
+  unique int id: @asm_options_list
+);
+
+#keyset[id, index]
+asm_options_list_asm_options(
+  int id: @asm_options_list ref,
+  int index: int ref,
+  int asm_option: @asm_option ref
+);
+
+asm_reg_operands(
+  unique int id: @asm_reg_operand
+);
+
+#keyset[id]
+asm_reg_operand_asm_dir_specs(
+  int id: @asm_reg_operand ref,
+  int asm_dir_spec: @asm_dir_spec ref
+);
+
+#keyset[id]
+asm_reg_operand_asm_operand_exprs(
+  int id: @asm_reg_operand ref,
+  int asm_operand_expr: @asm_operand_expr ref
+);
+
+#keyset[id]
+asm_reg_operand_asm_reg_specs(
+  int id: @asm_reg_operand ref,
+  int asm_reg_spec: @asm_reg_spec ref
+);
+
+asm_syms(
+  unique int id: @asm_sym
+);
+
+#keyset[id]
+asm_sym_paths(
+  int id: @asm_sym ref,
+  int path: @path ref
+);
+
+assoc_type_args(
+  unique int id: @assoc_type_arg
+);
+
+#keyset[id]
+assoc_type_arg_const_args(
+  int id: @assoc_type_arg ref,
+  int const_arg: @const_arg ref
+);
+
+#keyset[id]
+assoc_type_arg_generic_arg_lists(
+  int id: @assoc_type_arg ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+assoc_type_arg_identifiers(
+  int id: @assoc_type_arg ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+assoc_type_arg_param_lists(
+  int id: @assoc_type_arg ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id]
+assoc_type_arg_ret_types(
+  int id: @assoc_type_arg ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+assoc_type_arg_return_type_syntaxes(
+  int id: @assoc_type_arg ref,
+  int return_type_syntax: @return_type_syntax ref
+);
+
+#keyset[id]
+assoc_type_arg_type_reprs(
+  int id: @assoc_type_arg ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+assoc_type_arg_type_bound_lists(
+  int id: @assoc_type_arg ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+await_exprs(
+  unique int id: @await_expr
+);
+
+#keyset[id, index]
+await_expr_attrs(
+  int id: @await_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+await_expr_exprs(
+  int id: @await_expr ref,
+  int expr: @expr ref
+);
+
+become_exprs(
+  unique int id: @become_expr
+);
+
+#keyset[id, index]
+become_expr_attrs(
+  int id: @become_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+become_expr_exprs(
+  int id: @become_expr ref,
+  int expr: @expr ref
+);
+
+binary_exprs(
+  unique int id: @binary_expr
+);
+
+#keyset[id, index]
+binary_expr_attrs(
+  int id: @binary_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+binary_expr_lhs(
+  int id: @binary_expr ref,
+  int lhs: @expr ref
+);
+
+#keyset[id]
+binary_expr_operator_names(
+  int id: @binary_expr ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+binary_expr_rhs(
+  int id: @binary_expr ref,
+  int rhs: @expr ref
+);
+
+box_pats(
+  unique int id: @box_pat
+);
+
+#keyset[id]
+box_pat_pats(
+  int id: @box_pat ref,
+  int pat: @pat ref
+);
+
+break_exprs(
+  unique int id: @break_expr
+);
+
+#keyset[id, index]
+break_expr_attrs(
+  int id: @break_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+break_expr_exprs(
+  int id: @break_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+break_expr_lifetimes(
+  int id: @break_expr ref,
+  int lifetime: @lifetime ref
+);
+
+call_exprs(
+  unique int id: @call_expr
+);
+
+#keyset[id]
+call_expr_arg_lists(
+  int id: @call_expr ref,
+  int arg_list: @arg_list ref
+);
+
+#keyset[id, index]
+call_expr_attrs(
+  int id: @call_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+call_expr_functions(
+  int id: @call_expr ref,
+  int function: @expr ref
+);
+
+cast_exprs(
+  unique int id: @cast_expr
+);
+
+#keyset[id, index]
+cast_expr_attrs(
+  int id: @cast_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+cast_expr_exprs(
+  int id: @cast_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+cast_expr_type_reprs(
+  int id: @cast_expr ref,
+  int type_repr: @type_repr ref
+);
+
+closure_exprs(
+  unique int id: @closure_expr
+);
+
+#keyset[id]
+closure_expr_closure_bodies(
+  int id: @closure_expr ref,
+  int closure_body: @expr ref
+);
+
+#keyset[id]
+closure_expr_for_binders(
+  int id: @closure_expr ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+closure_expr_is_async(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_const(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_gen(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_move(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_static(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_ret_types(
+  int id: @closure_expr ref,
+  int ret_type: @ret_type_repr ref
+);
+
+comments(
+  unique int id: @comment,
+  int parent: @ast_node ref,
+  string text: string ref
+);
+
+const_args(
+  unique int id: @const_arg
+);
+
+#keyset[id]
+const_arg_exprs(
+  int id: @const_arg ref,
+  int expr: @expr ref
+);
+
+const_block_pats(
+  unique int id: @const_block_pat
+);
+
+#keyset[id]
+const_block_pat_block_exprs(
+  int id: @const_block_pat ref,
+  int block_expr: @block_expr ref
+);
+
+#keyset[id]
+const_block_pat_is_const(
+  int id: @const_block_pat ref
+);
+
+const_params(
+  unique int id: @const_param
+);
+
+#keyset[id, index]
+const_param_attrs(
+  int id: @const_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+const_param_default_vals(
+  int id: @const_param ref,
+  int default_val: @const_arg ref
+);
+
+#keyset[id]
+const_param_is_const(
+  int id: @const_param ref
+);
+
+#keyset[id]
+const_param_names(
+  int id: @const_param ref,
+  int name: @name ref
+);
+
+#keyset[id]
+const_param_type_reprs(
+  int id: @const_param ref,
+  int type_repr: @type_repr ref
+);
+
+continue_exprs(
+  unique int id: @continue_expr
+);
+
+#keyset[id, index]
+continue_expr_attrs(
+  int id: @continue_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+continue_expr_lifetimes(
+  int id: @continue_expr ref,
+  int lifetime: @lifetime ref
+);
+
+dyn_trait_type_reprs(
+  unique int id: @dyn_trait_type_repr
+);
+
+#keyset[id]
+dyn_trait_type_repr_type_bound_lists(
+  int id: @dyn_trait_type_repr ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+expr_stmts(
+  unique int id: @expr_stmt
+);
+
+#keyset[id]
+expr_stmt_exprs(
+  int id: @expr_stmt ref,
+  int expr: @expr ref
+);
+
+field_exprs(
+  unique int id: @field_expr
+);
+
+#keyset[id, index]
+field_expr_attrs(
+  int id: @field_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+field_expr_containers(
+  int id: @field_expr ref,
+  int container: @expr ref
+);
+
+#keyset[id]
+field_expr_identifiers(
+  int id: @field_expr ref,
+  int identifier: @name_ref ref
+);
+
+fn_ptr_type_reprs(
+  unique int id: @fn_ptr_type_repr
+);
+
+#keyset[id]
+fn_ptr_type_repr_abis(
+  int id: @fn_ptr_type_repr ref,
+  int abi: @abi ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_async(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_const(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_unsafe(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_param_lists(
+  int id: @fn_ptr_type_repr ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_ret_types(
+  int id: @fn_ptr_type_repr ref,
+  int ret_type: @ret_type_repr ref
+);
+
+for_type_reprs(
+  unique int id: @for_type_repr
+);
+
+#keyset[id]
+for_type_repr_for_binders(
+  int id: @for_type_repr ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+for_type_repr_type_reprs(
+  int id: @for_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+format_args_exprs(
+  unique int id: @format_args_expr
+);
+
+#keyset[id, index]
+format_args_expr_args(
+  int id: @format_args_expr ref,
+  int index: int ref,
+  int arg: @format_args_arg ref
+);
+
+#keyset[id, index]
+format_args_expr_attrs(
+  int id: @format_args_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+format_args_expr_templates(
+  int id: @format_args_expr ref,
+  int template: @expr ref
+);
+
+ident_pats(
+  unique int id: @ident_pat
+);
+
+#keyset[id, index]
+ident_pat_attrs(
+  int id: @ident_pat ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+ident_pat_is_mut(
+  int id: @ident_pat ref
+);
+
+#keyset[id]
+ident_pat_is_ref(
+  int id: @ident_pat ref
+);
+
+#keyset[id]
+ident_pat_names(
+  int id: @ident_pat ref,
+  int name: @name ref
+);
+
+#keyset[id]
+ident_pat_pats(
+  int id: @ident_pat ref,
+  int pat: @pat ref
+);
+
+if_exprs(
+  unique int id: @if_expr
+);
+
+#keyset[id, index]
+if_expr_attrs(
+  int id: @if_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+if_expr_conditions(
+  int id: @if_expr ref,
+  int condition: @expr ref
+);
+
+#keyset[id]
+if_expr_elses(
+  int id: @if_expr ref,
+  int else: @expr ref
+);
+
+#keyset[id]
+if_expr_thens(
+  int id: @if_expr ref,
+  int then: @block_expr ref
+);
+
+impl_trait_type_reprs(
+  unique int id: @impl_trait_type_repr
+);
+
+#keyset[id]
+impl_trait_type_repr_type_bound_lists(
+  int id: @impl_trait_type_repr ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+index_exprs(
+  unique int id: @index_expr
+);
+
+#keyset[id, index]
+index_expr_attrs(
+  int id: @index_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+index_expr_bases(
+  int id: @index_expr ref,
+  int base: @expr ref
+);
+
+#keyset[id]
+index_expr_indices(
+  int id: @index_expr ref,
+  int index: @expr ref
+);
+
+infer_type_reprs(
+  unique int id: @infer_type_repr
+);
+
+@item =
+  @asm_expr
+| @assoc_item
+| @extern_block
+| @extern_crate
+| @extern_item
+| @impl
+| @macro_def
+| @macro_rules
+| @module
+| @trait
+| @trait_alias
+| @type_item
+| @use
+;
+
+#keyset[id]
+item_attribute_macro_expansions(
+  int id: @item ref,
+  int attribute_macro_expansion: @macro_items ref
+);
+
+@labelable_expr =
+  @block_expr
+| @looping_expr
+;
+
+#keyset[id]
+labelable_expr_labels(
+  int id: @labelable_expr ref,
+  int label: @label ref
+);
+
+let_exprs(
+  unique int id: @let_expr
+);
+
+#keyset[id, index]
+let_expr_attrs(
+  int id: @let_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+let_expr_scrutinees(
+  int id: @let_expr ref,
+  int scrutinee: @expr ref
+);
+
+#keyset[id]
+let_expr_pats(
+  int id: @let_expr ref,
+  int pat: @pat ref
+);
+
+let_stmts(
+  unique int id: @let_stmt
+);
+
+#keyset[id, index]
+let_stmt_attrs(
+  int id: @let_stmt ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+let_stmt_initializers(
+  int id: @let_stmt ref,
+  int initializer: @expr ref
+);
+
+#keyset[id]
+let_stmt_let_elses(
+  int id: @let_stmt ref,
+  int let_else: @let_else ref
+);
+
+#keyset[id]
+let_stmt_pats(
+  int id: @let_stmt ref,
+  int pat: @pat ref
+);
+
+#keyset[id]
+let_stmt_type_reprs(
+  int id: @let_stmt ref,
+  int type_repr: @type_repr ref
+);
+
+lifetimes(
+  unique int id: @lifetime
+);
+
+#keyset[id]
+lifetime_texts(
+  int id: @lifetime ref,
+  string text: string ref
+);
+
+lifetime_args(
+  unique int id: @lifetime_arg
+);
+
+#keyset[id]
+lifetime_arg_lifetimes(
+  int id: @lifetime_arg ref,
+  int lifetime: @lifetime ref
+);
+
+lifetime_params(
+  unique int id: @lifetime_param
+);
+
+#keyset[id, index]
+lifetime_param_attrs(
+  int id: @lifetime_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+lifetime_param_lifetimes(
+  int id: @lifetime_param ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+lifetime_param_type_bound_lists(
+  int id: @lifetime_param ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+literal_exprs(
+  unique int id: @literal_expr
+);
+
+#keyset[id, index]
+literal_expr_attrs(
+  int id: @literal_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+literal_expr_text_values(
+  int id: @literal_expr ref,
+  string text_value: string ref
+);
+
+literal_pats(
+  unique int id: @literal_pat
+);
+
+#keyset[id]
+literal_pat_literals(
+  int id: @literal_pat ref,
+  int literal: @literal_expr ref
+);
+
+macro_exprs(
+  unique int id: @macro_expr
+);
+
+#keyset[id]
+macro_expr_macro_calls(
+  int id: @macro_expr ref,
+  int macro_call: @macro_call ref
+);
+
+macro_pats(
+  unique int id: @macro_pat
+);
+
+#keyset[id]
+macro_pat_macro_calls(
+  int id: @macro_pat ref,
+  int macro_call: @macro_call ref
+);
+
+macro_type_reprs(
+  unique int id: @macro_type_repr
+);
+
+#keyset[id]
+macro_type_repr_macro_calls(
+  int id: @macro_type_repr ref,
+  int macro_call: @macro_call ref
+);
+
+match_exprs(
+  unique int id: @match_expr
+);
+
+#keyset[id, index]
+match_expr_attrs(
+  int id: @match_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+match_expr_scrutinees(
+  int id: @match_expr ref,
+  int scrutinee: @expr ref
+);
+
+#keyset[id]
+match_expr_match_arm_lists(
+  int id: @match_expr ref,
+  int match_arm_list: @match_arm_list ref
+);
+
+method_call_exprs(
+  unique int id: @method_call_expr
+);
+
+#keyset[id]
+method_call_expr_arg_lists(
+  int id: @method_call_expr ref,
+  int arg_list: @arg_list ref
+);
+
+#keyset[id, index]
+method_call_expr_attrs(
+  int id: @method_call_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+method_call_expr_generic_arg_lists(
+  int id: @method_call_expr ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+method_call_expr_identifiers(
+  int id: @method_call_expr ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+method_call_expr_receivers(
+  int id: @method_call_expr ref,
+  int receiver: @expr ref
+);
+
+name_refs(
+  unique int id: @name_ref
+);
+
+#keyset[id]
+name_ref_texts(
+  int id: @name_ref ref,
+  string text: string ref
+);
+
+never_type_reprs(
+  unique int id: @never_type_repr
+);
+
+offset_of_exprs(
+  unique int id: @offset_of_expr
+);
+
+#keyset[id, index]
+offset_of_expr_attrs(
+  int id: @offset_of_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+offset_of_expr_fields(
+  int id: @offset_of_expr ref,
+  int index: int ref,
+  int field: @name_ref ref
+);
+
+#keyset[id]
+offset_of_expr_type_reprs(
+  int id: @offset_of_expr ref,
+  int type_repr: @type_repr ref
+);
+
+or_pats(
+  unique int id: @or_pat
+);
+
+#keyset[id, index]
+or_pat_pats(
+  int id: @or_pat ref,
+  int index: int ref,
+  int pat: @pat ref
+);
+
+params(
+  unique int id: @param
+);
+
+#keyset[id]
+param_pats(
+  int id: @param ref,
+  int pat: @pat ref
+);
+
+paren_exprs(
+  unique int id: @paren_expr
+);
+
+#keyset[id, index]
+paren_expr_attrs(
+  int id: @paren_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+paren_expr_exprs(
+  int id: @paren_expr ref,
+  int expr: @expr ref
+);
+
+paren_pats(
+  unique int id: @paren_pat
+);
+
+#keyset[id]
+paren_pat_pats(
+  int id: @paren_pat ref,
+  int pat: @pat ref
+);
+
+paren_type_reprs(
+  unique int id: @paren_type_repr
+);
+
+#keyset[id]
+paren_type_repr_type_reprs(
+  int id: @paren_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+@path_expr_base =
+  @path_expr
+;
+
+path_pats(
+  unique int id: @path_pat
+);
+
+path_type_reprs(
+  unique int id: @path_type_repr
+);
+
+#keyset[id]
+path_type_repr_paths(
+  int id: @path_type_repr ref,
+  int path: @path ref
+);
+
+prefix_exprs(
+  unique int id: @prefix_expr
+);
+
+#keyset[id, index]
+prefix_expr_attrs(
+  int id: @prefix_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+prefix_expr_exprs(
+  int id: @prefix_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+prefix_expr_operator_names(
+  int id: @prefix_expr ref,
+  string operator_name: string ref
+);
+
+ptr_type_reprs(
+  unique int id: @ptr_type_repr
+);
+
+#keyset[id]
+ptr_type_repr_is_const(
+  int id: @ptr_type_repr ref
+);
+
+#keyset[id]
+ptr_type_repr_is_mut(
+  int id: @ptr_type_repr ref
+);
+
+#keyset[id]
+ptr_type_repr_type_reprs(
+  int id: @ptr_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+range_exprs(
+  unique int id: @range_expr
+);
+
+#keyset[id, index]
+range_expr_attrs(
+  int id: @range_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+range_expr_ends(
+  int id: @range_expr ref,
+  int end: @expr ref
+);
+
+#keyset[id]
+range_expr_operator_names(
+  int id: @range_expr ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+range_expr_starts(
+  int id: @range_expr ref,
+  int start: @expr ref
+);
+
+range_pats(
+  unique int id: @range_pat
+);
+
+#keyset[id]
+range_pat_ends(
+  int id: @range_pat ref,
+  int end: @pat ref
+);
+
+#keyset[id]
+range_pat_operator_names(
+  int id: @range_pat ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+range_pat_starts(
+  int id: @range_pat ref,
+  int start: @pat ref
+);
+
+ref_exprs(
+  unique int id: @ref_expr
+);
+
+#keyset[id, index]
+ref_expr_attrs(
+  int id: @ref_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+ref_expr_exprs(
+  int id: @ref_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+ref_expr_is_const(
+  int id: @ref_expr ref
+);
+
+#keyset[id]
+ref_expr_is_mut(
+  int id: @ref_expr ref
+);
+
+#keyset[id]
+ref_expr_is_raw(
+  int id: @ref_expr ref
+);
+
+ref_pats(
+  unique int id: @ref_pat
+);
+
+#keyset[id]
+ref_pat_is_mut(
+  int id: @ref_pat ref
+);
+
+#keyset[id]
+ref_pat_pats(
+  int id: @ref_pat ref,
+  int pat: @pat ref
+);
+
+ref_type_reprs(
+  unique int id: @ref_type_repr
+);
+
+#keyset[id]
+ref_type_repr_is_mut(
+  int id: @ref_type_repr ref
+);
+
+#keyset[id]
+ref_type_repr_lifetimes(
+  int id: @ref_type_repr ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+ref_type_repr_type_reprs(
+  int id: @ref_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+rest_pats(
+  unique int id: @rest_pat
+);
+
+#keyset[id, index]
+rest_pat_attrs(
+  int id: @rest_pat ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+return_exprs(
+  unique int id: @return_expr
+);
+
+#keyset[id, index]
+return_expr_attrs(
+  int id: @return_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+return_expr_exprs(
+  int id: @return_expr ref,
+  int expr: @expr ref
+);
+
+self_params(
+  unique int id: @self_param
+);
+
+#keyset[id]
+self_param_is_ref(
+  int id: @self_param ref
+);
+
+#keyset[id]
+self_param_is_mut(
+  int id: @self_param ref
+);
+
+#keyset[id]
+self_param_lifetimes(
+  int id: @self_param ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+self_param_names(
+  int id: @self_param ref,
+  int name: @name ref
+);
+
+slice_pats(
+  unique int id: @slice_pat
+);
+
+#keyset[id, index]
+slice_pat_pats(
+  int id: @slice_pat ref,
+  int index: int ref,
+  int pat: @pat ref
+);
+
+slice_type_reprs(
+  unique int id: @slice_type_repr
+);
+
+#keyset[id]
+slice_type_repr_type_reprs(
+  int id: @slice_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+struct_exprs(
+  unique int id: @struct_expr
+);
+
+#keyset[id]
+struct_expr_struct_expr_field_lists(
+  int id: @struct_expr ref,
+  int struct_expr_field_list: @struct_expr_field_list ref
+);
+
+struct_field_lists(
+  unique int id: @struct_field_list
+);
+
+#keyset[id, index]
+struct_field_list_fields(
+  int id: @struct_field_list ref,
+  int index: int ref,
+  int field: @struct_field ref
+);
+
+struct_pats(
+  unique int id: @struct_pat
+);
+
+#keyset[id]
+struct_pat_struct_pat_field_lists(
+  int id: @struct_pat ref,
+  int struct_pat_field_list: @struct_pat_field_list ref
+);
+
+try_exprs(
+  unique int id: @try_expr
+);
+
+#keyset[id, index]
+try_expr_attrs(
+  int id: @try_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+try_expr_exprs(
+  int id: @try_expr ref,
+  int expr: @expr ref
+);
+
+tuple_exprs(
+  unique int id: @tuple_expr
+);
+
+#keyset[id, index]
+tuple_expr_attrs(
+  int id: @tuple_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+tuple_expr_fields(
+  int id: @tuple_expr ref,
+  int index: int ref,
+  int field: @expr ref
+);
+
+tuple_field_lists(
+  unique int id: @tuple_field_list
+);
+
+#keyset[id, index]
+tuple_field_list_fields(
+  int id: @tuple_field_list ref,
+  int index: int ref,
+  int field: @tuple_field ref
+);
+
+tuple_pats(
+  unique int id: @tuple_pat
+);
+
+#keyset[id, index]
+tuple_pat_fields(
+  int id: @tuple_pat ref,
+  int index: int ref,
+  int field: @pat ref
+);
+
+tuple_struct_pats(
+  unique int id: @tuple_struct_pat
+);
+
+#keyset[id, index]
+tuple_struct_pat_fields(
+  int id: @tuple_struct_pat ref,
+  int index: int ref,
+  int field: @pat ref
+);
+
+tuple_type_reprs(
+  unique int id: @tuple_type_repr
+);
+
+#keyset[id, index]
+tuple_type_repr_fields(
+  int id: @tuple_type_repr ref,
+  int index: int ref,
+  int field: @type_repr ref
+);
+
+type_args(
+  unique int id: @type_arg
+);
+
+#keyset[id]
+type_arg_type_reprs(
+  int id: @type_arg ref,
+  int type_repr: @type_repr ref
+);
+
+type_params(
+  unique int id: @type_param
+);
+
+#keyset[id, index]
+type_param_attrs(
+  int id: @type_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_param_default_types(
+  int id: @type_param ref,
+  int default_type: @type_repr ref
+);
+
+#keyset[id]
+type_param_names(
+  int id: @type_param ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_param_type_bound_lists(
+  int id: @type_param ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+underscore_exprs(
+  unique int id: @underscore_expr
+);
+
+#keyset[id, index]
+underscore_expr_attrs(
+  int id: @underscore_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+variants(
+  unique int id: @variant
+);
+
+#keyset[id, index]
+variant_attrs(
+  int id: @variant ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+variant_discriminants(
+  int id: @variant ref,
+  int discriminant: @expr ref
+);
+
+#keyset[id]
+variant_field_lists(
+  int id: @variant ref,
+  int field_list: @field_list ref
+);
+
+#keyset[id]
+variant_names(
+  int id: @variant ref,
+  int name: @name ref
+);
+
+#keyset[id]
+variant_visibilities(
+  int id: @variant ref,
+  int visibility: @visibility ref
+);
+
+wildcard_pats(
+  unique int id: @wildcard_pat
+);
+
+yeet_exprs(
+  unique int id: @yeet_expr
+);
+
+#keyset[id, index]
+yeet_expr_attrs(
+  int id: @yeet_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+yeet_expr_exprs(
+  int id: @yeet_expr ref,
+  int expr: @expr ref
+);
+
+yield_exprs(
+  unique int id: @yield_expr
+);
+
+#keyset[id, index]
+yield_expr_attrs(
+  int id: @yield_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+yield_expr_exprs(
+  int id: @yield_expr ref,
+  int expr: @expr ref
+);
+
+asm_exprs(
+  unique int id: @asm_expr
+);
+
+#keyset[id, index]
+asm_expr_asm_pieces(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int asm_piece: @asm_piece ref
+);
+
+#keyset[id, index]
+asm_expr_attrs(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+asm_expr_templates(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int template: @expr ref
+);
+
+@assoc_item =
+  @const
+| @function
+| @macro_call
+| @type_alias
+;
+
+block_exprs(
+  unique int id: @block_expr
+);
+
+#keyset[id, index]
+block_expr_attrs(
+  int id: @block_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+block_expr_is_async(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_const(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_gen(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_move(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_try(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_unsafe(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_stmt_lists(
+  int id: @block_expr ref,
+  int stmt_list: @stmt_list ref
+);
+
+extern_blocks(
+  unique int id: @extern_block
+);
+
+#keyset[id]
+extern_block_abis(
+  int id: @extern_block ref,
+  int abi: @abi ref
+);
+
+#keyset[id, index]
+extern_block_attrs(
+  int id: @extern_block ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+extern_block_extern_item_lists(
+  int id: @extern_block ref,
+  int extern_item_list: @extern_item_list ref
+);
+
+#keyset[id]
+extern_block_is_unsafe(
+  int id: @extern_block ref
+);
+
+extern_crates(
+  unique int id: @extern_crate
+);
+
+#keyset[id, index]
+extern_crate_attrs(
+  int id: @extern_crate ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+extern_crate_identifiers(
+  int id: @extern_crate ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+extern_crate_renames(
+  int id: @extern_crate ref,
+  int rename: @rename ref
+);
+
+#keyset[id]
+extern_crate_visibilities(
+  int id: @extern_crate ref,
+  int visibility: @visibility ref
+);
+
+@extern_item =
+  @function
+| @macro_call
+| @static
+| @type_alias
+;
+
+impls(
+  unique int id: @impl
+);
+
+#keyset[id]
+impl_assoc_item_lists(
+  int id: @impl ref,
+  int assoc_item_list: @assoc_item_list ref
+);
+
+#keyset[id, index]
+impl_attrs(
+  int id: @impl ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+impl_generic_param_lists(
+  int id: @impl ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+impl_is_const(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_is_default(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_is_unsafe(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_self_ties(
+  int id: @impl ref,
+  int self_ty: @type_repr ref
+);
+
+#keyset[id]
+impl_traits(
+  int id: @impl ref,
+  int trait: @type_repr ref
+);
+
+#keyset[id]
+impl_visibilities(
+  int id: @impl ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+impl_where_clauses(
+  int id: @impl ref,
+  int where_clause: @where_clause ref
+);
+
+@looping_expr =
+  @for_expr
+| @loop_expr
+| @while_expr
+;
+
+#keyset[id]
+looping_expr_loop_bodies(
+  int id: @looping_expr ref,
+  int loop_body: @block_expr ref
+);
+
+macro_defs(
+  unique int id: @macro_def
+);
+
+#keyset[id]
+macro_def_args(
+  int id: @macro_def ref,
+  int args: @token_tree ref
+);
+
+#keyset[id, index]
+macro_def_attrs(
+  int id: @macro_def ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_def_bodies(
+  int id: @macro_def ref,
+  int body: @token_tree ref
+);
+
+#keyset[id]
+macro_def_names(
+  int id: @macro_def ref,
+  int name: @name ref
+);
+
+#keyset[id]
+macro_def_visibilities(
+  int id: @macro_def ref,
+  int visibility: @visibility ref
+);
+
+macro_rules(
+  unique int id: @macro_rules
+);
+
+#keyset[id, index]
+macro_rules_attrs(
+  int id: @macro_rules ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_rules_names(
+  int id: @macro_rules ref,
+  int name: @name ref
+);
+
+#keyset[id]
+macro_rules_token_trees(
+  int id: @macro_rules ref,
+  int token_tree: @token_tree ref
+);
+
+#keyset[id]
+macro_rules_visibilities(
+  int id: @macro_rules ref,
+  int visibility: @visibility ref
+);
+
+modules(
+  unique int id: @module
+);
+
+#keyset[id, index]
+module_attrs(
+  int id: @module ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+module_item_lists(
+  int id: @module ref,
+  int item_list: @item_list ref
+);
+
+#keyset[id]
+module_names(
+  int id: @module ref,
+  int name: @name ref
+);
+
+#keyset[id]
+module_visibilities(
+  int id: @module ref,
+  int visibility: @visibility ref
+);
+
+path_exprs(
+  unique int id: @path_expr
+);
+
+#keyset[id, index]
+path_expr_attrs(
+  int id: @path_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+traits(
+  unique int id: @trait
+);
+
+#keyset[id]
+trait_assoc_item_lists(
+  int id: @trait ref,
+  int assoc_item_list: @assoc_item_list ref
+);
+
+#keyset[id, index]
+trait_attrs(
+  int id: @trait ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+trait_generic_param_lists(
+  int id: @trait ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+trait_is_auto(
+  int id: @trait ref
+);
+
+#keyset[id]
+trait_is_unsafe(
+  int id: @trait ref
+);
+
+#keyset[id]
+trait_names(
+  int id: @trait ref,
+  int name: @name ref
+);
+
+#keyset[id]
+trait_type_bound_lists(
+  int id: @trait ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+trait_visibilities(
+  int id: @trait ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+trait_where_clauses(
+  int id: @trait ref,
+  int where_clause: @where_clause ref
+);
+
+trait_aliases(
+  unique int id: @trait_alias
+);
+
+#keyset[id, index]
+trait_alias_attrs(
+  int id: @trait_alias ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+trait_alias_generic_param_lists(
+  int id: @trait_alias ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+trait_alias_names(
+  int id: @trait_alias ref,
+  int name: @name ref
+);
+
+#keyset[id]
+trait_alias_type_bound_lists(
+  int id: @trait_alias ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+trait_alias_visibilities(
+  int id: @trait_alias ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+trait_alias_where_clauses(
+  int id: @trait_alias ref,
+  int where_clause: @where_clause ref
+);
+
+@type_item =
+  @enum
+| @struct
+| @union
+;
+
+#keyset[id, index]
+type_item_derive_macro_expansions(
+  int id: @type_item ref,
+  int index: int ref,
+  int derive_macro_expansion: @macro_items ref
+);
+
+#keyset[id, index]
+type_item_attrs(
+  int id: @type_item ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_item_generic_param_lists(
+  int id: @type_item ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+type_item_names(
+  int id: @type_item ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_item_visibilities(
+  int id: @type_item ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+type_item_where_clauses(
+  int id: @type_item ref,
+  int where_clause: @where_clause ref
+);
+
+uses(
+  unique int id: @use
+);
+
+#keyset[id, index]
+use_attrs(
+  int id: @use ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+use_use_trees(
+  int id: @use ref,
+  int use_tree: @use_tree ref
+);
+
+#keyset[id]
+use_visibilities(
+  int id: @use ref,
+  int visibility: @visibility ref
+);
+
+consts(
+  unique int id: @const
+);
+
+#keyset[id, index]
+const_attrs(
+  int id: @const ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+const_bodies(
+  int id: @const ref,
+  int body: @expr ref
+);
+
+#keyset[id]
+const_generic_param_lists(
+  int id: @const ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+const_is_const(
+  int id: @const ref
+);
+
+#keyset[id]
+const_is_default(
+  int id: @const ref
+);
+
+#keyset[id]
+const_names(
+  int id: @const ref,
+  int name: @name ref
+);
+
+#keyset[id]
+const_type_reprs(
+  int id: @const ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+const_visibilities(
+  int id: @const ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+const_where_clauses(
+  int id: @const ref,
+  int where_clause: @where_clause ref
+);
+
+#keyset[id]
+const_has_implementation(
+  int id: @const ref
+);
+
+enums(
+  unique int id: @enum
+);
+
+#keyset[id]
+enum_variant_lists(
+  int id: @enum ref,
+  int variant_list: @variant_list ref
+);
+
+for_exprs(
+  unique int id: @for_expr
+);
+
+#keyset[id, index]
+for_expr_attrs(
+  int id: @for_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+for_expr_iterables(
+  int id: @for_expr ref,
+  int iterable: @expr ref
+);
+
+#keyset[id]
+for_expr_pats(
+  int id: @for_expr ref,
+  int pat: @pat ref
+);
+
+functions(
+  unique int id: @function
+);
+
+#keyset[id]
+function_abis(
+  int id: @function ref,
+  int abi: @abi ref
+);
+
+#keyset[id]
+function_function_bodies(
+  int id: @function ref,
+  int function_body: @block_expr ref
+);
+
+#keyset[id]
+function_generic_param_lists(
+  int id: @function ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+function_is_async(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_const(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_default(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_gen(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_unsafe(
+  int id: @function ref
+);
+
+#keyset[id]
+function_names(
+  int id: @function ref,
+  int name: @name ref
+);
+
+#keyset[id]
+function_ret_types(
+  int id: @function ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+function_visibilities(
+  int id: @function ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+function_where_clauses(
+  int id: @function ref,
+  int where_clause: @where_clause ref
+);
+
+#keyset[id]
+function_has_implementation(
+  int id: @function ref
+);
+
+loop_exprs(
+  unique int id: @loop_expr
+);
+
+#keyset[id, index]
+loop_expr_attrs(
+  int id: @loop_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+macro_calls(
+  unique int id: @macro_call
+);
+
+#keyset[id, index]
+macro_call_attrs(
+  int id: @macro_call ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_call_paths(
+  int id: @macro_call ref,
+  int path: @path ref
+);
+
+#keyset[id]
+macro_call_token_trees(
+  int id: @macro_call ref,
+  int token_tree: @token_tree ref
+);
+
+#keyset[id]
+macro_call_macro_call_expansions(
+  int id: @macro_call ref,
+  int macro_call_expansion: @ast_node ref
+);
+
+statics(
+  unique int id: @static
+);
+
+#keyset[id, index]
+static_attrs(
+  int id: @static ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+static_bodies(
+  int id: @static ref,
+  int body: @expr ref
+);
+
+#keyset[id]
+static_is_mut(
+  int id: @static ref
+);
+
+#keyset[id]
+static_is_static(
+  int id: @static ref
+);
+
+#keyset[id]
+static_is_unsafe(
+  int id: @static ref
+);
+
+#keyset[id]
+static_names(
+  int id: @static ref,
+  int name: @name ref
+);
+
+#keyset[id]
+static_type_reprs(
+  int id: @static ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+static_visibilities(
+  int id: @static ref,
+  int visibility: @visibility ref
+);
+
+structs(
+  unique int id: @struct
+);
+
+#keyset[id]
+struct_field_lists_(
+  int id: @struct ref,
+  int field_list: @field_list ref
+);
+
+type_aliases(
+  unique int id: @type_alias
+);
+
+#keyset[id, index]
+type_alias_attrs(
+  int id: @type_alias ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_alias_generic_param_lists(
+  int id: @type_alias ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+type_alias_is_default(
+  int id: @type_alias ref
+);
+
+#keyset[id]
+type_alias_names(
+  int id: @type_alias ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_alias_type_reprs(
+  int id: @type_alias ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+type_alias_type_bound_lists(
+  int id: @type_alias ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+type_alias_visibilities(
+  int id: @type_alias ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+type_alias_where_clauses(
+  int id: @type_alias ref,
+  int where_clause: @where_clause ref
+);
+
+unions(
+  unique int id: @union
+);
+
+#keyset[id]
+union_struct_field_lists(
+  int id: @union ref,
+  int struct_field_list: @struct_field_list ref
+);
+
+while_exprs(
+  unique int id: @while_expr
+);
+
+#keyset[id, index]
+while_expr_attrs(
+  int id: @while_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+while_expr_conditions(
+  int id: @while_expr ref,
+  int condition: @expr ref
+);
diff --git a/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/rust.dbscheme b/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/rust.dbscheme
new file mode 100644
index 000000000000..66a489863649
--- /dev/null
+++ b/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/rust.dbscheme
@@ -0,0 +1,3556 @@
+// generated by codegen, do not edit
+
+// from ../shared/tree-sitter-extractor/src/generator/prefix.dbscheme
+/*- Files and folders -*/
+
+/**
+ * The location of an element.
+ * The location spans column `startcolumn` of line `startline` to
+ * column `endcolumn` of line `endline` in file `file`.
+ * For more information, see
+ * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
+ */
+locations_default(
+  unique int id: @location_default,
+  int file: @file ref,
+  int beginLine: int ref,
+  int beginColumn: int ref,
+  int endLine: int ref,
+  int endColumn: int ref
+);
+
+files(
+  unique int id: @file,
+  string name: string ref
+);
+
+folders(
+  unique int id: @folder,
+  string name: string ref
+);
+
+@container = @file | @folder
+
+containerparent(
+  int parent: @container ref,
+  unique int child: @container ref
+);
+
+/*- Empty location -*/
+
+empty_location(
+  int location: @location_default ref
+);
+
+/*- Source location prefix -*/
+
+/**
+ * The source location of the snapshot.
+ */
+sourceLocationPrefix(string prefix : string ref);
+
+/*- Diagnostic messages -*/
+
+diagnostics(
+  unique int id: @diagnostic,
+  int severity: int ref,
+  string error_tag: string ref,
+  string error_message: string ref,
+  string full_error_message: string ref,
+  int location: @location_default ref
+);
+
+/*- Diagnostic messages: severity -*/
+
+case @diagnostic.severity of
+  10 = @diagnostic_debug
+| 20 = @diagnostic_info
+| 30 = @diagnostic_warning
+| 40 = @diagnostic_error
+;
+
+/*- YAML -*/
+
+#keyset[parent, idx]
+yaml (unique int id: @yaml_node,
+      int kind: int ref,
+      int parent: @yaml_node_parent ref,
+      int idx: int ref,
+      string tag: string ref,
+      string tostring: string ref);
+
+case @yaml_node.kind of
+  0 = @yaml_scalar_node
+| 1 = @yaml_mapping_node
+| 2 = @yaml_sequence_node
+| 3 = @yaml_alias_node
+;
+
+@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;
+
+@yaml_node_parent = @yaml_collection_node | @file;
+
+yaml_anchors (unique int node: @yaml_node ref,
+              string anchor: string ref);
+
+yaml_aliases (unique int alias: @yaml_alias_node ref,
+              string target: string ref);
+
+yaml_scalars (unique int scalar: @yaml_scalar_node ref,
+              int style: int ref,
+              string value: string ref);
+
+yaml_errors (unique int id: @yaml_error,
+             string message: string ref);
+
+yaml_locations(unique int locatable: @yaml_locatable ref,
+             int location: @location_default ref);
+
+@yaml_locatable = @yaml_node | @yaml_error;
+
+/*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
+databaseMetadata(
+  string metadataKey: string ref,
+  string value: string ref
+);
+
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
+overlayChangedFiles(
+  string path: string ref
+);
+
+
+// from prefix.dbscheme
+#keyset[id]
+locatable_locations(
+  int id: @locatable ref,
+  int location: @location_default ref
+);
+
+
+// from schema
+
+@element =
+  @extractor_step
+| @locatable
+| @named_crate
+| @unextracted
+;
+
+extractor_steps(
+  unique int id: @extractor_step,
+  string action: string ref,
+  int duration_ms: int ref
+);
+
+#keyset[id]
+extractor_step_files(
+  int id: @extractor_step ref,
+  int file: @file ref
+);
+
+@locatable =
+  @ast_node
+| @crate
+;
+
+named_crates(
+  unique int id: @named_crate,
+  string name: string ref,
+  int crate: @crate ref
+);
+
+@unextracted =
+  @missing
+| @unimplemented
+;
+
+@ast_node =
+  @abi
+| @addressable
+| @arg_list
+| @asm_dir_spec
+| @asm_operand
+| @asm_operand_expr
+| @asm_option
+| @asm_piece
+| @asm_reg_spec
+| @assoc_item_list
+| @attr
+| @callable
+| @expr
+| @extern_item_list
+| @field_list
+| @for_binder
+| @format_args_arg
+| @generic_arg
+| @generic_arg_list
+| @generic_param
+| @generic_param_list
+| @item_list
+| @label
+| @let_else
+| @macro_items
+| @match_arm
+| @match_arm_list
+| @match_guard
+| @meta
+| @name
+| @param_base
+| @param_list
+| @parenthesized_arg_list
+| @pat
+| @path
+| @path_ast_node
+| @path_segment
+| @rename
+| @ret_type_repr
+| @return_type_syntax
+| @source_file
+| @stmt
+| @stmt_list
+| @struct_expr_field
+| @struct_expr_field_list
+| @struct_field
+| @struct_pat_field
+| @struct_pat_field_list
+| @token
+| @token_tree
+| @tuple_field
+| @type_bound
+| @type_bound_list
+| @type_repr
+| @use_bound_generic_arg
+| @use_bound_generic_args
+| @use_tree
+| @use_tree_list
+| @variant_list
+| @visibility
+| @where_clause
+| @where_pred
+;
+
+crates(
+  unique int id: @crate
+);
+
+#keyset[id]
+crate_names(
+  int id: @crate ref,
+  string name: string ref
+);
+
+#keyset[id]
+crate_versions(
+  int id: @crate ref,
+  string version: string ref
+);
+
+#keyset[id, index]
+crate_cfg_options(
+  int id: @crate ref,
+  int index: int ref,
+  string cfg_option: string ref
+);
+
+#keyset[id, index]
+crate_named_dependencies(
+  int id: @crate ref,
+  int index: int ref,
+  int named_dependency: @named_crate ref
+);
+
+missings(
+  unique int id: @missing
+);
+
+unimplementeds(
+  unique int id: @unimplemented
+);
+
+abis(
+  unique int id: @abi
+);
+
+#keyset[id]
+abi_abi_strings(
+  int id: @abi ref,
+  string abi_string: string ref
+);
+
+@addressable =
+  @item
+| @variant
+;
+
+arg_lists(
+  unique int id: @arg_list
+);
+
+#keyset[id, index]
+arg_list_args(
+  int id: @arg_list ref,
+  int index: int ref,
+  int arg: @expr ref
+);
+
+asm_dir_specs(
+  unique int id: @asm_dir_spec
+);
+
+@asm_operand =
+  @asm_const
+| @asm_label
+| @asm_reg_operand
+| @asm_sym
+;
+
+asm_operand_exprs(
+  unique int id: @asm_operand_expr
+);
+
+#keyset[id]
+asm_operand_expr_in_exprs(
+  int id: @asm_operand_expr ref,
+  int in_expr: @expr ref
+);
+
+#keyset[id]
+asm_operand_expr_out_exprs(
+  int id: @asm_operand_expr ref,
+  int out_expr: @expr ref
+);
+
+asm_options(
+  unique int id: @asm_option
+);
+
+#keyset[id]
+asm_option_is_raw(
+  int id: @asm_option ref
+);
+
+@asm_piece =
+  @asm_clobber_abi
+| @asm_operand_named
+| @asm_options_list
+;
+
+asm_reg_specs(
+  unique int id: @asm_reg_spec
+);
+
+#keyset[id]
+asm_reg_spec_identifiers(
+  int id: @asm_reg_spec ref,
+  int identifier: @name_ref ref
+);
+
+assoc_item_lists(
+  unique int id: @assoc_item_list
+);
+
+#keyset[id, index]
+assoc_item_list_assoc_items(
+  int id: @assoc_item_list ref,
+  int index: int ref,
+  int assoc_item: @assoc_item ref
+);
+
+#keyset[id, index]
+assoc_item_list_attrs(
+  int id: @assoc_item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+attrs(
+  unique int id: @attr
+);
+
+#keyset[id]
+attr_meta(
+  int id: @attr ref,
+  int meta: @meta ref
+);
+
+@callable =
+  @closure_expr
+| @function
+;
+
+#keyset[id]
+callable_param_lists(
+  int id: @callable ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id, index]
+callable_attrs(
+  int id: @callable ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+@expr =
+  @array_expr_internal
+| @asm_expr
+| @await_expr
+| @become_expr
+| @binary_expr
+| @break_expr
+| @call_expr
+| @cast_expr
+| @closure_expr
+| @continue_expr
+| @field_expr
+| @format_args_expr
+| @if_expr
+| @index_expr
+| @labelable_expr
+| @let_expr
+| @literal_expr
+| @macro_expr
+| @match_expr
+| @method_call_expr
+| @offset_of_expr
+| @paren_expr
+| @path_expr_base
+| @prefix_expr
+| @range_expr
+| @ref_expr
+| @return_expr
+| @struct_expr
+| @try_expr
+| @tuple_expr
+| @underscore_expr
+| @yeet_expr
+| @yield_expr
+;
+
+extern_item_lists(
+  unique int id: @extern_item_list
+);
+
+#keyset[id, index]
+extern_item_list_attrs(
+  int id: @extern_item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+extern_item_list_extern_items(
+  int id: @extern_item_list ref,
+  int index: int ref,
+  int extern_item: @extern_item ref
+);
+
+@field_list =
+  @struct_field_list
+| @tuple_field_list
+;
+
+for_binders(
+  unique int id: @for_binder
+);
+
+#keyset[id]
+for_binder_generic_param_lists(
+  int id: @for_binder ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+format_args_args(
+  unique int id: @format_args_arg
+);
+
+#keyset[id]
+format_args_arg_exprs(
+  int id: @format_args_arg ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+format_args_arg_names(
+  int id: @format_args_arg ref,
+  int name: @name ref
+);
+
+@generic_arg =
+  @assoc_type_arg
+| @const_arg
+| @lifetime_arg
+| @type_arg
+;
+
+generic_arg_lists(
+  unique int id: @generic_arg_list
+);
+
+#keyset[id, index]
+generic_arg_list_generic_args(
+  int id: @generic_arg_list ref,
+  int index: int ref,
+  int generic_arg: @generic_arg ref
+);
+
+@generic_param =
+  @const_param
+| @lifetime_param
+| @type_param
+;
+
+generic_param_lists(
+  unique int id: @generic_param_list
+);
+
+#keyset[id, index]
+generic_param_list_generic_params(
+  int id: @generic_param_list ref,
+  int index: int ref,
+  int generic_param: @generic_param ref
+);
+
+item_lists(
+  unique int id: @item_list
+);
+
+#keyset[id, index]
+item_list_attrs(
+  int id: @item_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+item_list_items(
+  int id: @item_list ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+labels(
+  unique int id: @label
+);
+
+#keyset[id]
+label_lifetimes(
+  int id: @label ref,
+  int lifetime: @lifetime ref
+);
+
+let_elses(
+  unique int id: @let_else
+);
+
+#keyset[id]
+let_else_block_exprs(
+  int id: @let_else ref,
+  int block_expr: @block_expr ref
+);
+
+macro_items(
+  unique int id: @macro_items
+);
+
+#keyset[id, index]
+macro_items_items(
+  int id: @macro_items ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+match_arms(
+  unique int id: @match_arm
+);
+
+#keyset[id, index]
+match_arm_attrs(
+  int id: @match_arm ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+match_arm_exprs(
+  int id: @match_arm ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+match_arm_guards(
+  int id: @match_arm ref,
+  int guard: @match_guard ref
+);
+
+#keyset[id]
+match_arm_pats(
+  int id: @match_arm ref,
+  int pat: @pat ref
+);
+
+match_arm_lists(
+  unique int id: @match_arm_list
+);
+
+#keyset[id, index]
+match_arm_list_arms(
+  int id: @match_arm_list ref,
+  int index: int ref,
+  int arm: @match_arm ref
+);
+
+#keyset[id, index]
+match_arm_list_attrs(
+  int id: @match_arm_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+match_guards(
+  unique int id: @match_guard
+);
+
+#keyset[id]
+match_guard_conditions(
+  int id: @match_guard ref,
+  int condition: @expr ref
+);
+
+meta(
+  unique int id: @meta
+);
+
+#keyset[id]
+meta_exprs(
+  int id: @meta ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+meta_is_unsafe(
+  int id: @meta ref
+);
+
+#keyset[id]
+meta_paths(
+  int id: @meta ref,
+  int path: @path ref
+);
+
+#keyset[id]
+meta_token_trees(
+  int id: @meta ref,
+  int token_tree: @token_tree ref
+);
+
+names(
+  unique int id: @name
+);
+
+#keyset[id]
+name_texts(
+  int id: @name ref,
+  string text: string ref
+);
+
+@param_base =
+  @param
+| @self_param
+;
+
+#keyset[id, index]
+param_base_attrs(
+  int id: @param_base ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+param_base_type_reprs(
+  int id: @param_base ref,
+  int type_repr: @type_repr ref
+);
+
+param_lists(
+  unique int id: @param_list
+);
+
+#keyset[id, index]
+param_list_params(
+  int id: @param_list ref,
+  int index: int ref,
+  int param: @param ref
+);
+
+#keyset[id]
+param_list_self_params(
+  int id: @param_list ref,
+  int self_param: @self_param ref
+);
+
+parenthesized_arg_lists(
+  unique int id: @parenthesized_arg_list
+);
+
+#keyset[id, index]
+parenthesized_arg_list_type_args(
+  int id: @parenthesized_arg_list ref,
+  int index: int ref,
+  int type_arg: @type_arg ref
+);
+
+@pat =
+  @box_pat
+| @const_block_pat
+| @ident_pat
+| @literal_pat
+| @macro_pat
+| @or_pat
+| @paren_pat
+| @path_pat
+| @range_pat
+| @ref_pat
+| @rest_pat
+| @slice_pat
+| @struct_pat
+| @tuple_pat
+| @tuple_struct_pat
+| @wildcard_pat
+;
+
+paths(
+  unique int id: @path
+);
+
+#keyset[id]
+path_qualifiers(
+  int id: @path ref,
+  int qualifier: @path ref
+);
+
+#keyset[id]
+path_segments_(
+  int id: @path ref,
+  int segment: @path_segment ref
+);
+
+@path_ast_node =
+  @path_expr
+| @path_pat
+| @struct_expr
+| @struct_pat
+| @tuple_struct_pat
+;
+
+#keyset[id]
+path_ast_node_paths(
+  int id: @path_ast_node ref,
+  int path: @path ref
+);
+
+path_segments(
+  unique int id: @path_segment
+);
+
+#keyset[id]
+path_segment_generic_arg_lists(
+  int id: @path_segment ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+path_segment_identifiers(
+  int id: @path_segment ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+path_segment_parenthesized_arg_lists(
+  int id: @path_segment ref,
+  int parenthesized_arg_list: @parenthesized_arg_list ref
+);
+
+#keyset[id]
+path_segment_ret_types(
+  int id: @path_segment ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+path_segment_return_type_syntaxes(
+  int id: @path_segment ref,
+  int return_type_syntax: @return_type_syntax ref
+);
+
+#keyset[id]
+path_segment_type_reprs(
+  int id: @path_segment ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+path_segment_trait_type_reprs(
+  int id: @path_segment ref,
+  int trait_type_repr: @path_type_repr ref
+);
+
+renames(
+  unique int id: @rename
+);
+
+#keyset[id]
+rename_names(
+  int id: @rename ref,
+  int name: @name ref
+);
+
+ret_type_reprs(
+  unique int id: @ret_type_repr
+);
+
+#keyset[id]
+ret_type_repr_type_reprs(
+  int id: @ret_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+return_type_syntaxes(
+  unique int id: @return_type_syntax
+);
+
+source_files(
+  unique int id: @source_file
+);
+
+#keyset[id, index]
+source_file_attrs(
+  int id: @source_file ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+source_file_items(
+  int id: @source_file ref,
+  int index: int ref,
+  int item: @item ref
+);
+
+@stmt =
+  @expr_stmt
+| @item
+| @let_stmt
+;
+
+stmt_lists(
+  unique int id: @stmt_list
+);
+
+#keyset[id, index]
+stmt_list_attrs(
+  int id: @stmt_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+stmt_list_statements(
+  int id: @stmt_list ref,
+  int index: int ref,
+  int statement: @stmt ref
+);
+
+#keyset[id]
+stmt_list_tail_exprs(
+  int id: @stmt_list ref,
+  int tail_expr: @expr ref
+);
+
+struct_expr_fields(
+  unique int id: @struct_expr_field
+);
+
+#keyset[id, index]
+struct_expr_field_attrs(
+  int id: @struct_expr_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_expr_field_exprs(
+  int id: @struct_expr_field ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+struct_expr_field_identifiers(
+  int id: @struct_expr_field ref,
+  int identifier: @name_ref ref
+);
+
+struct_expr_field_lists(
+  unique int id: @struct_expr_field_list
+);
+
+#keyset[id, index]
+struct_expr_field_list_attrs(
+  int id: @struct_expr_field_list ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+struct_expr_field_list_fields(
+  int id: @struct_expr_field_list ref,
+  int index: int ref,
+  int field: @struct_expr_field ref
+);
+
+#keyset[id]
+struct_expr_field_list_spreads(
+  int id: @struct_expr_field_list ref,
+  int spread: @expr ref
+);
+
+struct_fields(
+  unique int id: @struct_field
+);
+
+#keyset[id, index]
+struct_field_attrs(
+  int id: @struct_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_field_defaults(
+  int id: @struct_field ref,
+  int default: @expr ref
+);
+
+#keyset[id]
+struct_field_is_unsafe(
+  int id: @struct_field ref
+);
+
+#keyset[id]
+struct_field_names(
+  int id: @struct_field ref,
+  int name: @name ref
+);
+
+#keyset[id]
+struct_field_type_reprs(
+  int id: @struct_field ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+struct_field_visibilities(
+  int id: @struct_field ref,
+  int visibility: @visibility ref
+);
+
+struct_pat_fields(
+  unique int id: @struct_pat_field
+);
+
+#keyset[id, index]
+struct_pat_field_attrs(
+  int id: @struct_pat_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+struct_pat_field_identifiers(
+  int id: @struct_pat_field ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+struct_pat_field_pats(
+  int id: @struct_pat_field ref,
+  int pat: @pat ref
+);
+
+struct_pat_field_lists(
+  unique int id: @struct_pat_field_list
+);
+
+#keyset[id, index]
+struct_pat_field_list_fields(
+  int id: @struct_pat_field_list ref,
+  int index: int ref,
+  int field: @struct_pat_field ref
+);
+
+#keyset[id]
+struct_pat_field_list_rest_pats(
+  int id: @struct_pat_field_list ref,
+  int rest_pat: @rest_pat ref
+);
+
+@token =
+  @comment
+;
+
+token_trees(
+  unique int id: @token_tree
+);
+
+tuple_fields(
+  unique int id: @tuple_field
+);
+
+#keyset[id, index]
+tuple_field_attrs(
+  int id: @tuple_field ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+tuple_field_type_reprs(
+  int id: @tuple_field ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+tuple_field_visibilities(
+  int id: @tuple_field ref,
+  int visibility: @visibility ref
+);
+
+type_bounds(
+  unique int id: @type_bound
+);
+
+#keyset[id]
+type_bound_for_binders(
+  int id: @type_bound ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+type_bound_is_async(
+  int id: @type_bound ref
+);
+
+#keyset[id]
+type_bound_is_const(
+  int id: @type_bound ref
+);
+
+#keyset[id]
+type_bound_lifetimes(
+  int id: @type_bound ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+type_bound_type_reprs(
+  int id: @type_bound ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+type_bound_use_bound_generic_args(
+  int id: @type_bound ref,
+  int use_bound_generic_args: @use_bound_generic_args ref
+);
+
+type_bound_lists(
+  unique int id: @type_bound_list
+);
+
+#keyset[id, index]
+type_bound_list_bounds(
+  int id: @type_bound_list ref,
+  int index: int ref,
+  int bound: @type_bound ref
+);
+
+@type_repr =
+  @array_type_repr
+| @dyn_trait_type_repr
+| @fn_ptr_type_repr
+| @for_type_repr
+| @impl_trait_type_repr
+| @infer_type_repr
+| @macro_type_repr
+| @never_type_repr
+| @paren_type_repr
+| @path_type_repr
+| @ptr_type_repr
+| @ref_type_repr
+| @slice_type_repr
+| @tuple_type_repr
+;
+
+@use_bound_generic_arg =
+  @lifetime
+| @name_ref
+;
+
+use_bound_generic_args(
+  unique int id: @use_bound_generic_args
+);
+
+#keyset[id, index]
+use_bound_generic_args_use_bound_generic_args(
+  int id: @use_bound_generic_args ref,
+  int index: int ref,
+  int use_bound_generic_arg: @use_bound_generic_arg ref
+);
+
+use_trees(
+  unique int id: @use_tree
+);
+
+#keyset[id]
+use_tree_is_glob(
+  int id: @use_tree ref
+);
+
+#keyset[id]
+use_tree_paths(
+  int id: @use_tree ref,
+  int path: @path ref
+);
+
+#keyset[id]
+use_tree_renames(
+  int id: @use_tree ref,
+  int rename: @rename ref
+);
+
+#keyset[id]
+use_tree_use_tree_lists(
+  int id: @use_tree ref,
+  int use_tree_list: @use_tree_list ref
+);
+
+use_tree_lists(
+  unique int id: @use_tree_list
+);
+
+#keyset[id, index]
+use_tree_list_use_trees(
+  int id: @use_tree_list ref,
+  int index: int ref,
+  int use_tree: @use_tree ref
+);
+
+variant_lists(
+  unique int id: @variant_list
+);
+
+#keyset[id, index]
+variant_list_variants(
+  int id: @variant_list ref,
+  int index: int ref,
+  int variant: @variant ref
+);
+
+visibilities(
+  unique int id: @visibility
+);
+
+#keyset[id]
+visibility_paths(
+  int id: @visibility ref,
+  int path: @path ref
+);
+
+where_clauses(
+  unique int id: @where_clause
+);
+
+#keyset[id, index]
+where_clause_predicates(
+  int id: @where_clause ref,
+  int index: int ref,
+  int predicate: @where_pred ref
+);
+
+where_preds(
+  unique int id: @where_pred
+);
+
+#keyset[id]
+where_pred_for_binders(
+  int id: @where_pred ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+where_pred_lifetimes(
+  int id: @where_pred ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+where_pred_type_reprs(
+  int id: @where_pred ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+where_pred_type_bound_lists(
+  int id: @where_pred ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+array_expr_internals(
+  unique int id: @array_expr_internal
+);
+
+#keyset[id, index]
+array_expr_internal_attrs(
+  int id: @array_expr_internal ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+array_expr_internal_exprs(
+  int id: @array_expr_internal ref,
+  int index: int ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+array_expr_internal_is_semicolon(
+  int id: @array_expr_internal ref
+);
+
+array_type_reprs(
+  unique int id: @array_type_repr
+);
+
+#keyset[id]
+array_type_repr_const_args(
+  int id: @array_type_repr ref,
+  int const_arg: @const_arg ref
+);
+
+#keyset[id]
+array_type_repr_element_type_reprs(
+  int id: @array_type_repr ref,
+  int element_type_repr: @type_repr ref
+);
+
+asm_clobber_abis(
+  unique int id: @asm_clobber_abi
+);
+
+asm_consts(
+  unique int id: @asm_const
+);
+
+#keyset[id]
+asm_const_exprs(
+  int id: @asm_const ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+asm_const_is_const(
+  int id: @asm_const ref
+);
+
+asm_labels(
+  unique int id: @asm_label
+);
+
+#keyset[id]
+asm_label_block_exprs(
+  int id: @asm_label ref,
+  int block_expr: @block_expr ref
+);
+
+asm_operand_nameds(
+  unique int id: @asm_operand_named
+);
+
+#keyset[id]
+asm_operand_named_asm_operands(
+  int id: @asm_operand_named ref,
+  int asm_operand: @asm_operand ref
+);
+
+#keyset[id]
+asm_operand_named_names(
+  int id: @asm_operand_named ref,
+  int name: @name ref
+);
+
+asm_options_lists(
+  unique int id: @asm_options_list
+);
+
+#keyset[id, index]
+asm_options_list_asm_options(
+  int id: @asm_options_list ref,
+  int index: int ref,
+  int asm_option: @asm_option ref
+);
+
+asm_reg_operands(
+  unique int id: @asm_reg_operand
+);
+
+#keyset[id]
+asm_reg_operand_asm_dir_specs(
+  int id: @asm_reg_operand ref,
+  int asm_dir_spec: @asm_dir_spec ref
+);
+
+#keyset[id]
+asm_reg_operand_asm_operand_exprs(
+  int id: @asm_reg_operand ref,
+  int asm_operand_expr: @asm_operand_expr ref
+);
+
+#keyset[id]
+asm_reg_operand_asm_reg_specs(
+  int id: @asm_reg_operand ref,
+  int asm_reg_spec: @asm_reg_spec ref
+);
+
+asm_syms(
+  unique int id: @asm_sym
+);
+
+#keyset[id]
+asm_sym_paths(
+  int id: @asm_sym ref,
+  int path: @path ref
+);
+
+assoc_type_args(
+  unique int id: @assoc_type_arg
+);
+
+#keyset[id]
+assoc_type_arg_const_args(
+  int id: @assoc_type_arg ref,
+  int const_arg: @const_arg ref
+);
+
+#keyset[id]
+assoc_type_arg_generic_arg_lists(
+  int id: @assoc_type_arg ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+assoc_type_arg_identifiers(
+  int id: @assoc_type_arg ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+assoc_type_arg_param_lists(
+  int id: @assoc_type_arg ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id]
+assoc_type_arg_ret_types(
+  int id: @assoc_type_arg ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+assoc_type_arg_return_type_syntaxes(
+  int id: @assoc_type_arg ref,
+  int return_type_syntax: @return_type_syntax ref
+);
+
+#keyset[id]
+assoc_type_arg_type_reprs(
+  int id: @assoc_type_arg ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+assoc_type_arg_type_bound_lists(
+  int id: @assoc_type_arg ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+await_exprs(
+  unique int id: @await_expr
+);
+
+#keyset[id, index]
+await_expr_attrs(
+  int id: @await_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+await_expr_exprs(
+  int id: @await_expr ref,
+  int expr: @expr ref
+);
+
+become_exprs(
+  unique int id: @become_expr
+);
+
+#keyset[id, index]
+become_expr_attrs(
+  int id: @become_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+become_expr_exprs(
+  int id: @become_expr ref,
+  int expr: @expr ref
+);
+
+binary_exprs(
+  unique int id: @binary_expr
+);
+
+#keyset[id, index]
+binary_expr_attrs(
+  int id: @binary_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+binary_expr_lhs(
+  int id: @binary_expr ref,
+  int lhs: @expr ref
+);
+
+#keyset[id]
+binary_expr_operator_names(
+  int id: @binary_expr ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+binary_expr_rhs(
+  int id: @binary_expr ref,
+  int rhs: @expr ref
+);
+
+box_pats(
+  unique int id: @box_pat
+);
+
+#keyset[id]
+box_pat_pats(
+  int id: @box_pat ref,
+  int pat: @pat ref
+);
+
+break_exprs(
+  unique int id: @break_expr
+);
+
+#keyset[id, index]
+break_expr_attrs(
+  int id: @break_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+break_expr_exprs(
+  int id: @break_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+break_expr_lifetimes(
+  int id: @break_expr ref,
+  int lifetime: @lifetime ref
+);
+
+call_exprs(
+  unique int id: @call_expr
+);
+
+#keyset[id]
+call_expr_arg_lists(
+  int id: @call_expr ref,
+  int arg_list: @arg_list ref
+);
+
+#keyset[id, index]
+call_expr_attrs(
+  int id: @call_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+call_expr_functions(
+  int id: @call_expr ref,
+  int function: @expr ref
+);
+
+cast_exprs(
+  unique int id: @cast_expr
+);
+
+#keyset[id, index]
+cast_expr_attrs(
+  int id: @cast_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+cast_expr_exprs(
+  int id: @cast_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+cast_expr_type_reprs(
+  int id: @cast_expr ref,
+  int type_repr: @type_repr ref
+);
+
+closure_exprs(
+  unique int id: @closure_expr
+);
+
+#keyset[id]
+closure_expr_closure_bodies(
+  int id: @closure_expr ref,
+  int closure_body: @expr ref
+);
+
+#keyset[id]
+closure_expr_for_binders(
+  int id: @closure_expr ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+closure_expr_is_async(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_const(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_gen(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_move(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_is_static(
+  int id: @closure_expr ref
+);
+
+#keyset[id]
+closure_expr_ret_types(
+  int id: @closure_expr ref,
+  int ret_type: @ret_type_repr ref
+);
+
+comments(
+  unique int id: @comment,
+  int parent: @ast_node ref,
+  string text: string ref
+);
+
+const_args(
+  unique int id: @const_arg
+);
+
+#keyset[id]
+const_arg_exprs(
+  int id: @const_arg ref,
+  int expr: @expr ref
+);
+
+const_block_pats(
+  unique int id: @const_block_pat
+);
+
+#keyset[id]
+const_block_pat_block_exprs(
+  int id: @const_block_pat ref,
+  int block_expr: @block_expr ref
+);
+
+#keyset[id]
+const_block_pat_is_const(
+  int id: @const_block_pat ref
+);
+
+const_params(
+  unique int id: @const_param
+);
+
+#keyset[id, index]
+const_param_attrs(
+  int id: @const_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+const_param_default_vals(
+  int id: @const_param ref,
+  int default_val: @const_arg ref
+);
+
+#keyset[id]
+const_param_is_const(
+  int id: @const_param ref
+);
+
+#keyset[id]
+const_param_names(
+  int id: @const_param ref,
+  int name: @name ref
+);
+
+#keyset[id]
+const_param_type_reprs(
+  int id: @const_param ref,
+  int type_repr: @type_repr ref
+);
+
+continue_exprs(
+  unique int id: @continue_expr
+);
+
+#keyset[id, index]
+continue_expr_attrs(
+  int id: @continue_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+continue_expr_lifetimes(
+  int id: @continue_expr ref,
+  int lifetime: @lifetime ref
+);
+
+dyn_trait_type_reprs(
+  unique int id: @dyn_trait_type_repr
+);
+
+#keyset[id]
+dyn_trait_type_repr_type_bound_lists(
+  int id: @dyn_trait_type_repr ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+expr_stmts(
+  unique int id: @expr_stmt
+);
+
+#keyset[id]
+expr_stmt_exprs(
+  int id: @expr_stmt ref,
+  int expr: @expr ref
+);
+
+field_exprs(
+  unique int id: @field_expr
+);
+
+#keyset[id, index]
+field_expr_attrs(
+  int id: @field_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+field_expr_containers(
+  int id: @field_expr ref,
+  int container: @expr ref
+);
+
+#keyset[id]
+field_expr_identifiers(
+  int id: @field_expr ref,
+  int identifier: @name_ref ref
+);
+
+fn_ptr_type_reprs(
+  unique int id: @fn_ptr_type_repr
+);
+
+#keyset[id]
+fn_ptr_type_repr_abis(
+  int id: @fn_ptr_type_repr ref,
+  int abi: @abi ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_async(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_const(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_is_unsafe(
+  int id: @fn_ptr_type_repr ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_param_lists(
+  int id: @fn_ptr_type_repr ref,
+  int param_list: @param_list ref
+);
+
+#keyset[id]
+fn_ptr_type_repr_ret_types(
+  int id: @fn_ptr_type_repr ref,
+  int ret_type: @ret_type_repr ref
+);
+
+for_type_reprs(
+  unique int id: @for_type_repr
+);
+
+#keyset[id]
+for_type_repr_for_binders(
+  int id: @for_type_repr ref,
+  int for_binder: @for_binder ref
+);
+
+#keyset[id]
+for_type_repr_type_reprs(
+  int id: @for_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+format_args_exprs(
+  unique int id: @format_args_expr
+);
+
+#keyset[id, index]
+format_args_expr_args(
+  int id: @format_args_expr ref,
+  int index: int ref,
+  int arg: @format_args_arg ref
+);
+
+#keyset[id, index]
+format_args_expr_attrs(
+  int id: @format_args_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+format_args_expr_templates(
+  int id: @format_args_expr ref,
+  int template: @expr ref
+);
+
+ident_pats(
+  unique int id: @ident_pat
+);
+
+#keyset[id, index]
+ident_pat_attrs(
+  int id: @ident_pat ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+ident_pat_is_mut(
+  int id: @ident_pat ref
+);
+
+#keyset[id]
+ident_pat_is_ref(
+  int id: @ident_pat ref
+);
+
+#keyset[id]
+ident_pat_names(
+  int id: @ident_pat ref,
+  int name: @name ref
+);
+
+#keyset[id]
+ident_pat_pats(
+  int id: @ident_pat ref,
+  int pat: @pat ref
+);
+
+if_exprs(
+  unique int id: @if_expr
+);
+
+#keyset[id, index]
+if_expr_attrs(
+  int id: @if_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+if_expr_conditions(
+  int id: @if_expr ref,
+  int condition: @expr ref
+);
+
+#keyset[id]
+if_expr_elses(
+  int id: @if_expr ref,
+  int else: @expr ref
+);
+
+#keyset[id]
+if_expr_thens(
+  int id: @if_expr ref,
+  int then: @block_expr ref
+);
+
+impl_trait_type_reprs(
+  unique int id: @impl_trait_type_repr
+);
+
+#keyset[id]
+impl_trait_type_repr_type_bound_lists(
+  int id: @impl_trait_type_repr ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+index_exprs(
+  unique int id: @index_expr
+);
+
+#keyset[id, index]
+index_expr_attrs(
+  int id: @index_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+index_expr_bases(
+  int id: @index_expr ref,
+  int base: @expr ref
+);
+
+#keyset[id]
+index_expr_indices(
+  int id: @index_expr ref,
+  int index: @expr ref
+);
+
+infer_type_reprs(
+  unique int id: @infer_type_repr
+);
+
+@item =
+  @asm_expr
+| @assoc_item
+| @extern_block
+| @extern_crate
+| @extern_item
+| @impl
+| @macro_def
+| @macro_rules
+| @module
+| @trait
+| @trait_alias
+| @type_item
+| @use
+;
+
+#keyset[id]
+item_attribute_macro_expansions(
+  int id: @item ref,
+  int attribute_macro_expansion: @macro_items ref
+);
+
+@labelable_expr =
+  @block_expr
+| @looping_expr
+;
+
+#keyset[id]
+labelable_expr_labels(
+  int id: @labelable_expr ref,
+  int label: @label ref
+);
+
+let_exprs(
+  unique int id: @let_expr
+);
+
+#keyset[id, index]
+let_expr_attrs(
+  int id: @let_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+let_expr_scrutinees(
+  int id: @let_expr ref,
+  int scrutinee: @expr ref
+);
+
+#keyset[id]
+let_expr_pats(
+  int id: @let_expr ref,
+  int pat: @pat ref
+);
+
+let_stmts(
+  unique int id: @let_stmt
+);
+
+#keyset[id, index]
+let_stmt_attrs(
+  int id: @let_stmt ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+let_stmt_initializers(
+  int id: @let_stmt ref,
+  int initializer: @expr ref
+);
+
+#keyset[id]
+let_stmt_let_elses(
+  int id: @let_stmt ref,
+  int let_else: @let_else ref
+);
+
+#keyset[id]
+let_stmt_pats(
+  int id: @let_stmt ref,
+  int pat: @pat ref
+);
+
+#keyset[id]
+let_stmt_type_reprs(
+  int id: @let_stmt ref,
+  int type_repr: @type_repr ref
+);
+
+lifetimes(
+  unique int id: @lifetime
+);
+
+#keyset[id]
+lifetime_texts(
+  int id: @lifetime ref,
+  string text: string ref
+);
+
+lifetime_args(
+  unique int id: @lifetime_arg
+);
+
+#keyset[id]
+lifetime_arg_lifetimes(
+  int id: @lifetime_arg ref,
+  int lifetime: @lifetime ref
+);
+
+lifetime_params(
+  unique int id: @lifetime_param
+);
+
+#keyset[id, index]
+lifetime_param_attrs(
+  int id: @lifetime_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+lifetime_param_lifetimes(
+  int id: @lifetime_param ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+lifetime_param_type_bound_lists(
+  int id: @lifetime_param ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+literal_exprs(
+  unique int id: @literal_expr
+);
+
+#keyset[id, index]
+literal_expr_attrs(
+  int id: @literal_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+literal_expr_text_values(
+  int id: @literal_expr ref,
+  string text_value: string ref
+);
+
+literal_pats(
+  unique int id: @literal_pat
+);
+
+#keyset[id]
+literal_pat_literals(
+  int id: @literal_pat ref,
+  int literal: @literal_expr ref
+);
+
+macro_exprs(
+  unique int id: @macro_expr
+);
+
+#keyset[id]
+macro_expr_macro_calls(
+  int id: @macro_expr ref,
+  int macro_call: @macro_call ref
+);
+
+macro_pats(
+  unique int id: @macro_pat
+);
+
+#keyset[id]
+macro_pat_macro_calls(
+  int id: @macro_pat ref,
+  int macro_call: @macro_call ref
+);
+
+macro_type_reprs(
+  unique int id: @macro_type_repr
+);
+
+#keyset[id]
+macro_type_repr_macro_calls(
+  int id: @macro_type_repr ref,
+  int macro_call: @macro_call ref
+);
+
+match_exprs(
+  unique int id: @match_expr
+);
+
+#keyset[id, index]
+match_expr_attrs(
+  int id: @match_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+match_expr_scrutinees(
+  int id: @match_expr ref,
+  int scrutinee: @expr ref
+);
+
+#keyset[id]
+match_expr_match_arm_lists(
+  int id: @match_expr ref,
+  int match_arm_list: @match_arm_list ref
+);
+
+method_call_exprs(
+  unique int id: @method_call_expr
+);
+
+#keyset[id]
+method_call_expr_arg_lists(
+  int id: @method_call_expr ref,
+  int arg_list: @arg_list ref
+);
+
+#keyset[id, index]
+method_call_expr_attrs(
+  int id: @method_call_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+method_call_expr_generic_arg_lists(
+  int id: @method_call_expr ref,
+  int generic_arg_list: @generic_arg_list ref
+);
+
+#keyset[id]
+method_call_expr_identifiers(
+  int id: @method_call_expr ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+method_call_expr_receivers(
+  int id: @method_call_expr ref,
+  int receiver: @expr ref
+);
+
+name_refs(
+  unique int id: @name_ref
+);
+
+#keyset[id]
+name_ref_texts(
+  int id: @name_ref ref,
+  string text: string ref
+);
+
+never_type_reprs(
+  unique int id: @never_type_repr
+);
+
+offset_of_exprs(
+  unique int id: @offset_of_expr
+);
+
+#keyset[id, index]
+offset_of_expr_attrs(
+  int id: @offset_of_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+offset_of_expr_fields(
+  int id: @offset_of_expr ref,
+  int index: int ref,
+  int field: @name_ref ref
+);
+
+#keyset[id]
+offset_of_expr_type_reprs(
+  int id: @offset_of_expr ref,
+  int type_repr: @type_repr ref
+);
+
+or_pats(
+  unique int id: @or_pat
+);
+
+#keyset[id, index]
+or_pat_pats(
+  int id: @or_pat ref,
+  int index: int ref,
+  int pat: @pat ref
+);
+
+params(
+  unique int id: @param
+);
+
+#keyset[id]
+param_pats(
+  int id: @param ref,
+  int pat: @pat ref
+);
+
+paren_exprs(
+  unique int id: @paren_expr
+);
+
+#keyset[id, index]
+paren_expr_attrs(
+  int id: @paren_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+paren_expr_exprs(
+  int id: @paren_expr ref,
+  int expr: @expr ref
+);
+
+paren_pats(
+  unique int id: @paren_pat
+);
+
+#keyset[id]
+paren_pat_pats(
+  int id: @paren_pat ref,
+  int pat: @pat ref
+);
+
+paren_type_reprs(
+  unique int id: @paren_type_repr
+);
+
+#keyset[id]
+paren_type_repr_type_reprs(
+  int id: @paren_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+@path_expr_base =
+  @path_expr
+;
+
+path_pats(
+  unique int id: @path_pat
+);
+
+path_type_reprs(
+  unique int id: @path_type_repr
+);
+
+#keyset[id]
+path_type_repr_paths(
+  int id: @path_type_repr ref,
+  int path: @path ref
+);
+
+prefix_exprs(
+  unique int id: @prefix_expr
+);
+
+#keyset[id, index]
+prefix_expr_attrs(
+  int id: @prefix_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+prefix_expr_exprs(
+  int id: @prefix_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+prefix_expr_operator_names(
+  int id: @prefix_expr ref,
+  string operator_name: string ref
+);
+
+ptr_type_reprs(
+  unique int id: @ptr_type_repr
+);
+
+#keyset[id]
+ptr_type_repr_is_const(
+  int id: @ptr_type_repr ref
+);
+
+#keyset[id]
+ptr_type_repr_is_mut(
+  int id: @ptr_type_repr ref
+);
+
+#keyset[id]
+ptr_type_repr_type_reprs(
+  int id: @ptr_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+range_exprs(
+  unique int id: @range_expr
+);
+
+#keyset[id, index]
+range_expr_attrs(
+  int id: @range_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+range_expr_ends(
+  int id: @range_expr ref,
+  int end: @expr ref
+);
+
+#keyset[id]
+range_expr_operator_names(
+  int id: @range_expr ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+range_expr_starts(
+  int id: @range_expr ref,
+  int start: @expr ref
+);
+
+range_pats(
+  unique int id: @range_pat
+);
+
+#keyset[id]
+range_pat_ends(
+  int id: @range_pat ref,
+  int end: @pat ref
+);
+
+#keyset[id]
+range_pat_operator_names(
+  int id: @range_pat ref,
+  string operator_name: string ref
+);
+
+#keyset[id]
+range_pat_starts(
+  int id: @range_pat ref,
+  int start: @pat ref
+);
+
+ref_exprs(
+  unique int id: @ref_expr
+);
+
+#keyset[id, index]
+ref_expr_attrs(
+  int id: @ref_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+ref_expr_exprs(
+  int id: @ref_expr ref,
+  int expr: @expr ref
+);
+
+#keyset[id]
+ref_expr_is_const(
+  int id: @ref_expr ref
+);
+
+#keyset[id]
+ref_expr_is_mut(
+  int id: @ref_expr ref
+);
+
+#keyset[id]
+ref_expr_is_raw(
+  int id: @ref_expr ref
+);
+
+ref_pats(
+  unique int id: @ref_pat
+);
+
+#keyset[id]
+ref_pat_is_mut(
+  int id: @ref_pat ref
+);
+
+#keyset[id]
+ref_pat_pats(
+  int id: @ref_pat ref,
+  int pat: @pat ref
+);
+
+ref_type_reprs(
+  unique int id: @ref_type_repr
+);
+
+#keyset[id]
+ref_type_repr_is_mut(
+  int id: @ref_type_repr ref
+);
+
+#keyset[id]
+ref_type_repr_lifetimes(
+  int id: @ref_type_repr ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+ref_type_repr_type_reprs(
+  int id: @ref_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+rest_pats(
+  unique int id: @rest_pat
+);
+
+#keyset[id, index]
+rest_pat_attrs(
+  int id: @rest_pat ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+return_exprs(
+  unique int id: @return_expr
+);
+
+#keyset[id, index]
+return_expr_attrs(
+  int id: @return_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+return_expr_exprs(
+  int id: @return_expr ref,
+  int expr: @expr ref
+);
+
+self_params(
+  unique int id: @self_param
+);
+
+#keyset[id]
+self_param_is_ref(
+  int id: @self_param ref
+);
+
+#keyset[id]
+self_param_is_mut(
+  int id: @self_param ref
+);
+
+#keyset[id]
+self_param_lifetimes(
+  int id: @self_param ref,
+  int lifetime: @lifetime ref
+);
+
+#keyset[id]
+self_param_names(
+  int id: @self_param ref,
+  int name: @name ref
+);
+
+slice_pats(
+  unique int id: @slice_pat
+);
+
+#keyset[id, index]
+slice_pat_pats(
+  int id: @slice_pat ref,
+  int index: int ref,
+  int pat: @pat ref
+);
+
+slice_type_reprs(
+  unique int id: @slice_type_repr
+);
+
+#keyset[id]
+slice_type_repr_type_reprs(
+  int id: @slice_type_repr ref,
+  int type_repr: @type_repr ref
+);
+
+struct_exprs(
+  unique int id: @struct_expr
+);
+
+#keyset[id]
+struct_expr_struct_expr_field_lists(
+  int id: @struct_expr ref,
+  int struct_expr_field_list: @struct_expr_field_list ref
+);
+
+struct_field_lists(
+  unique int id: @struct_field_list
+);
+
+#keyset[id, index]
+struct_field_list_fields(
+  int id: @struct_field_list ref,
+  int index: int ref,
+  int field: @struct_field ref
+);
+
+struct_pats(
+  unique int id: @struct_pat
+);
+
+#keyset[id]
+struct_pat_struct_pat_field_lists(
+  int id: @struct_pat ref,
+  int struct_pat_field_list: @struct_pat_field_list ref
+);
+
+try_exprs(
+  unique int id: @try_expr
+);
+
+#keyset[id, index]
+try_expr_attrs(
+  int id: @try_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+try_expr_exprs(
+  int id: @try_expr ref,
+  int expr: @expr ref
+);
+
+tuple_exprs(
+  unique int id: @tuple_expr
+);
+
+#keyset[id, index]
+tuple_expr_attrs(
+  int id: @tuple_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+tuple_expr_fields(
+  int id: @tuple_expr ref,
+  int index: int ref,
+  int field: @expr ref
+);
+
+tuple_field_lists(
+  unique int id: @tuple_field_list
+);
+
+#keyset[id, index]
+tuple_field_list_fields(
+  int id: @tuple_field_list ref,
+  int index: int ref,
+  int field: @tuple_field ref
+);
+
+tuple_pats(
+  unique int id: @tuple_pat
+);
+
+#keyset[id, index]
+tuple_pat_fields(
+  int id: @tuple_pat ref,
+  int index: int ref,
+  int field: @pat ref
+);
+
+tuple_struct_pats(
+  unique int id: @tuple_struct_pat
+);
+
+#keyset[id, index]
+tuple_struct_pat_fields(
+  int id: @tuple_struct_pat ref,
+  int index: int ref,
+  int field: @pat ref
+);
+
+tuple_type_reprs(
+  unique int id: @tuple_type_repr
+);
+
+#keyset[id, index]
+tuple_type_repr_fields(
+  int id: @tuple_type_repr ref,
+  int index: int ref,
+  int field: @type_repr ref
+);
+
+type_args(
+  unique int id: @type_arg
+);
+
+#keyset[id]
+type_arg_type_reprs(
+  int id: @type_arg ref,
+  int type_repr: @type_repr ref
+);
+
+type_params(
+  unique int id: @type_param
+);
+
+#keyset[id, index]
+type_param_attrs(
+  int id: @type_param ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_param_default_types(
+  int id: @type_param ref,
+  int default_type: @type_repr ref
+);
+
+#keyset[id]
+type_param_names(
+  int id: @type_param ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_param_type_bound_lists(
+  int id: @type_param ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+underscore_exprs(
+  unique int id: @underscore_expr
+);
+
+#keyset[id, index]
+underscore_expr_attrs(
+  int id: @underscore_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+variants(
+  unique int id: @variant
+);
+
+#keyset[id, index]
+variant_attrs(
+  int id: @variant ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+variant_discriminants(
+  int id: @variant ref,
+  int discriminant: @expr ref
+);
+
+#keyset[id]
+variant_field_lists(
+  int id: @variant ref,
+  int field_list: @field_list ref
+);
+
+#keyset[id]
+variant_names(
+  int id: @variant ref,
+  int name: @name ref
+);
+
+#keyset[id]
+variant_visibilities(
+  int id: @variant ref,
+  int visibility: @visibility ref
+);
+
+wildcard_pats(
+  unique int id: @wildcard_pat
+);
+
+yeet_exprs(
+  unique int id: @yeet_expr
+);
+
+#keyset[id, index]
+yeet_expr_attrs(
+  int id: @yeet_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+yeet_expr_exprs(
+  int id: @yeet_expr ref,
+  int expr: @expr ref
+);
+
+yield_exprs(
+  unique int id: @yield_expr
+);
+
+#keyset[id, index]
+yield_expr_attrs(
+  int id: @yield_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+yield_expr_exprs(
+  int id: @yield_expr ref,
+  int expr: @expr ref
+);
+
+asm_exprs(
+  unique int id: @asm_expr
+);
+
+#keyset[id, index]
+asm_expr_asm_pieces(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int asm_piece: @asm_piece ref
+);
+
+#keyset[id, index]
+asm_expr_attrs(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id, index]
+asm_expr_templates(
+  int id: @asm_expr ref,
+  int index: int ref,
+  int template: @expr ref
+);
+
+@assoc_item =
+  @const
+| @function
+| @macro_call
+| @type_alias
+;
+
+block_exprs(
+  unique int id: @block_expr
+);
+
+#keyset[id, index]
+block_expr_attrs(
+  int id: @block_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+block_expr_is_async(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_const(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_gen(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_move(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_try(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_is_unsafe(
+  int id: @block_expr ref
+);
+
+#keyset[id]
+block_expr_stmt_lists(
+  int id: @block_expr ref,
+  int stmt_list: @stmt_list ref
+);
+
+extern_blocks(
+  unique int id: @extern_block
+);
+
+#keyset[id]
+extern_block_abis(
+  int id: @extern_block ref,
+  int abi: @abi ref
+);
+
+#keyset[id, index]
+extern_block_attrs(
+  int id: @extern_block ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+extern_block_extern_item_lists(
+  int id: @extern_block ref,
+  int extern_item_list: @extern_item_list ref
+);
+
+#keyset[id]
+extern_block_is_unsafe(
+  int id: @extern_block ref
+);
+
+extern_crates(
+  unique int id: @extern_crate
+);
+
+#keyset[id, index]
+extern_crate_attrs(
+  int id: @extern_crate ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+extern_crate_identifiers(
+  int id: @extern_crate ref,
+  int identifier: @name_ref ref
+);
+
+#keyset[id]
+extern_crate_renames(
+  int id: @extern_crate ref,
+  int rename: @rename ref
+);
+
+#keyset[id]
+extern_crate_visibilities(
+  int id: @extern_crate ref,
+  int visibility: @visibility ref
+);
+
+@extern_item =
+  @function
+| @macro_call
+| @static
+| @type_alias
+;
+
+impls(
+  unique int id: @impl
+);
+
+#keyset[id]
+impl_assoc_item_lists(
+  int id: @impl ref,
+  int assoc_item_list: @assoc_item_list ref
+);
+
+#keyset[id, index]
+impl_attrs(
+  int id: @impl ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+impl_generic_param_lists(
+  int id: @impl ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+impl_is_const(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_is_default(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_is_unsafe(
+  int id: @impl ref
+);
+
+#keyset[id]
+impl_self_ties(
+  int id: @impl ref,
+  int self_ty: @type_repr ref
+);
+
+#keyset[id]
+impl_traits(
+  int id: @impl ref,
+  int trait: @type_repr ref
+);
+
+#keyset[id]
+impl_visibilities(
+  int id: @impl ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+impl_where_clauses(
+  int id: @impl ref,
+  int where_clause: @where_clause ref
+);
+
+@looping_expr =
+  @for_expr
+| @loop_expr
+| @while_expr
+;
+
+#keyset[id]
+looping_expr_loop_bodies(
+  int id: @looping_expr ref,
+  int loop_body: @block_expr ref
+);
+
+macro_defs(
+  unique int id: @macro_def
+);
+
+#keyset[id]
+macro_def_args(
+  int id: @macro_def ref,
+  int args: @token_tree ref
+);
+
+#keyset[id, index]
+macro_def_attrs(
+  int id: @macro_def ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_def_bodies(
+  int id: @macro_def ref,
+  int body: @token_tree ref
+);
+
+#keyset[id]
+macro_def_names(
+  int id: @macro_def ref,
+  int name: @name ref
+);
+
+#keyset[id]
+macro_def_visibilities(
+  int id: @macro_def ref,
+  int visibility: @visibility ref
+);
+
+macro_rules(
+  unique int id: @macro_rules
+);
+
+#keyset[id, index]
+macro_rules_attrs(
+  int id: @macro_rules ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_rules_names(
+  int id: @macro_rules ref,
+  int name: @name ref
+);
+
+#keyset[id]
+macro_rules_token_trees(
+  int id: @macro_rules ref,
+  int token_tree: @token_tree ref
+);
+
+#keyset[id]
+macro_rules_visibilities(
+  int id: @macro_rules ref,
+  int visibility: @visibility ref
+);
+
+modules(
+  unique int id: @module
+);
+
+#keyset[id, index]
+module_attrs(
+  int id: @module ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+module_item_lists(
+  int id: @module ref,
+  int item_list: @item_list ref
+);
+
+#keyset[id]
+module_names(
+  int id: @module ref,
+  int name: @name ref
+);
+
+#keyset[id]
+module_visibilities(
+  int id: @module ref,
+  int visibility: @visibility ref
+);
+
+path_exprs(
+  unique int id: @path_expr
+);
+
+#keyset[id, index]
+path_expr_attrs(
+  int id: @path_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+traits(
+  unique int id: @trait
+);
+
+#keyset[id]
+trait_assoc_item_lists(
+  int id: @trait ref,
+  int assoc_item_list: @assoc_item_list ref
+);
+
+#keyset[id, index]
+trait_attrs(
+  int id: @trait ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+trait_generic_param_lists(
+  int id: @trait ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+trait_is_auto(
+  int id: @trait ref
+);
+
+#keyset[id]
+trait_is_unsafe(
+  int id: @trait ref
+);
+
+#keyset[id]
+trait_names(
+  int id: @trait ref,
+  int name: @name ref
+);
+
+#keyset[id]
+trait_type_bound_lists(
+  int id: @trait ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+trait_visibilities(
+  int id: @trait ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+trait_where_clauses(
+  int id: @trait ref,
+  int where_clause: @where_clause ref
+);
+
+trait_aliases(
+  unique int id: @trait_alias
+);
+
+#keyset[id, index]
+trait_alias_attrs(
+  int id: @trait_alias ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+trait_alias_generic_param_lists(
+  int id: @trait_alias ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+trait_alias_names(
+  int id: @trait_alias ref,
+  int name: @name ref
+);
+
+#keyset[id]
+trait_alias_type_bound_lists(
+  int id: @trait_alias ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+trait_alias_visibilities(
+  int id: @trait_alias ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+trait_alias_where_clauses(
+  int id: @trait_alias ref,
+  int where_clause: @where_clause ref
+);
+
+@type_item =
+  @enum
+| @struct
+| @union
+;
+
+#keyset[id, index]
+type_item_derive_macro_expansions(
+  int id: @type_item ref,
+  int index: int ref,
+  int derive_macro_expansion: @macro_items ref
+);
+
+#keyset[id, index]
+type_item_attrs(
+  int id: @type_item ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_item_generic_param_lists(
+  int id: @type_item ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+type_item_names(
+  int id: @type_item ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_item_visibilities(
+  int id: @type_item ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+type_item_where_clauses(
+  int id: @type_item ref,
+  int where_clause: @where_clause ref
+);
+
+uses(
+  unique int id: @use
+);
+
+#keyset[id, index]
+use_attrs(
+  int id: @use ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+use_use_trees(
+  int id: @use ref,
+  int use_tree: @use_tree ref
+);
+
+#keyset[id]
+use_visibilities(
+  int id: @use ref,
+  int visibility: @visibility ref
+);
+
+consts(
+  unique int id: @const
+);
+
+#keyset[id, index]
+const_attrs(
+  int id: @const ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+const_bodies(
+  int id: @const ref,
+  int body: @expr ref
+);
+
+#keyset[id]
+const_generic_param_lists(
+  int id: @const ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+const_is_const(
+  int id: @const ref
+);
+
+#keyset[id]
+const_is_default(
+  int id: @const ref
+);
+
+#keyset[id]
+const_names(
+  int id: @const ref,
+  int name: @name ref
+);
+
+#keyset[id]
+const_type_reprs(
+  int id: @const ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+const_visibilities(
+  int id: @const ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+const_where_clauses(
+  int id: @const ref,
+  int where_clause: @where_clause ref
+);
+
+#keyset[id]
+const_has_implementation(
+  int id: @const ref
+);
+
+enums(
+  unique int id: @enum
+);
+
+#keyset[id]
+enum_variant_lists(
+  int id: @enum ref,
+  int variant_list: @variant_list ref
+);
+
+for_exprs(
+  unique int id: @for_expr
+);
+
+#keyset[id, index]
+for_expr_attrs(
+  int id: @for_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+for_expr_iterables(
+  int id: @for_expr ref,
+  int iterable: @expr ref
+);
+
+#keyset[id]
+for_expr_pats(
+  int id: @for_expr ref,
+  int pat: @pat ref
+);
+
+functions(
+  unique int id: @function
+);
+
+#keyset[id]
+function_abis(
+  int id: @function ref,
+  int abi: @abi ref
+);
+
+#keyset[id]
+function_function_bodies(
+  int id: @function ref,
+  int function_body: @block_expr ref
+);
+
+#keyset[id]
+function_generic_param_lists(
+  int id: @function ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+function_is_async(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_const(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_default(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_gen(
+  int id: @function ref
+);
+
+#keyset[id]
+function_is_unsafe(
+  int id: @function ref
+);
+
+#keyset[id]
+function_names(
+  int id: @function ref,
+  int name: @name ref
+);
+
+#keyset[id]
+function_ret_types(
+  int id: @function ref,
+  int ret_type: @ret_type_repr ref
+);
+
+#keyset[id]
+function_visibilities(
+  int id: @function ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+function_where_clauses(
+  int id: @function ref,
+  int where_clause: @where_clause ref
+);
+
+#keyset[id]
+function_has_implementation(
+  int id: @function ref
+);
+
+loop_exprs(
+  unique int id: @loop_expr
+);
+
+#keyset[id, index]
+loop_expr_attrs(
+  int id: @loop_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+macro_calls(
+  unique int id: @macro_call
+);
+
+#keyset[id, index]
+macro_call_attrs(
+  int id: @macro_call ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+macro_call_paths(
+  int id: @macro_call ref,
+  int path: @path ref
+);
+
+#keyset[id]
+macro_call_token_trees(
+  int id: @macro_call ref,
+  int token_tree: @token_tree ref
+);
+
+#keyset[id]
+macro_call_macro_call_expansions(
+  int id: @macro_call ref,
+  int macro_call_expansion: @ast_node ref
+);
+
+statics(
+  unique int id: @static
+);
+
+#keyset[id, index]
+static_attrs(
+  int id: @static ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+static_bodies(
+  int id: @static ref,
+  int body: @expr ref
+);
+
+#keyset[id]
+static_is_mut(
+  int id: @static ref
+);
+
+#keyset[id]
+static_is_static(
+  int id: @static ref
+);
+
+#keyset[id]
+static_is_unsafe(
+  int id: @static ref
+);
+
+#keyset[id]
+static_names(
+  int id: @static ref,
+  int name: @name ref
+);
+
+#keyset[id]
+static_type_reprs(
+  int id: @static ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+static_visibilities(
+  int id: @static ref,
+  int visibility: @visibility ref
+);
+
+structs(
+  unique int id: @struct
+);
+
+#keyset[id]
+struct_field_lists_(
+  int id: @struct ref,
+  int field_list: @field_list ref
+);
+
+type_aliases(
+  unique int id: @type_alias
+);
+
+#keyset[id, index]
+type_alias_attrs(
+  int id: @type_alias ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+type_alias_generic_param_lists(
+  int id: @type_alias ref,
+  int generic_param_list: @generic_param_list ref
+);
+
+#keyset[id]
+type_alias_is_default(
+  int id: @type_alias ref
+);
+
+#keyset[id]
+type_alias_names(
+  int id: @type_alias ref,
+  int name: @name ref
+);
+
+#keyset[id]
+type_alias_type_reprs(
+  int id: @type_alias ref,
+  int type_repr: @type_repr ref
+);
+
+#keyset[id]
+type_alias_type_bound_lists(
+  int id: @type_alias ref,
+  int type_bound_list: @type_bound_list ref
+);
+
+#keyset[id]
+type_alias_visibilities(
+  int id: @type_alias ref,
+  int visibility: @visibility ref
+);
+
+#keyset[id]
+type_alias_where_clauses(
+  int id: @type_alias ref,
+  int where_clause: @where_clause ref
+);
+
+unions(
+  unique int id: @union
+);
+
+#keyset[id]
+union_struct_field_lists(
+  int id: @union ref,
+  int struct_field_list: @struct_field_list ref
+);
+
+while_exprs(
+  unique int id: @while_expr
+);
+
+#keyset[id, index]
+while_expr_attrs(
+  int id: @while_expr ref,
+  int index: int ref,
+  int attr: @attr ref
+);
+
+#keyset[id]
+while_expr_conditions(
+  int id: @while_expr ref,
+  int condition: @expr ref
+);
diff --git a/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/upgrade.properties b/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/upgrade.properties
new file mode 100644
index 000000000000..00fae2d3bc61
--- /dev/null
+++ b/rust/ql/lib/upgrades/90861289dd4c4d9fc029ed0fc249c1e11c5aab01/upgrade.properties
@@ -0,0 +1,2 @@
+description: Sections for databaseMetadata and overlayChangedFiles
+compatibility: full
diff --git a/shared/tree-sitter-extractor/src/generator/mod.rs b/shared/tree-sitter-extractor/src/generator/mod.rs
index c886ec98eeb7..78e9e4a0b694 100644
--- a/shared/tree-sitter-extractor/src/generator/mod.rs
+++ b/shared/tree-sitter-extractor/src/generator/mod.rs
@@ -17,6 +17,7 @@ pub fn generate(
     languages: Vec<language::Language>,
     dbscheme_path: PathBuf,
     ql_library_path: PathBuf,
+    regenerate_instructions: &str,
 ) -> std::io::Result<()> {
     let dbscheme_file = File::create(dbscheme_path).map_err(|e| {
         tracing::error!("Failed to create dbscheme file: {}", e);
@@ -26,8 +27,9 @@ pub fn generate(
     writeln!(
         dbscheme_writer,
         "// CodeQL database schema for {}\n\
-         // Automatically generated from the tree-sitter grammar; do not edit\n",
-        languages[0].name
+         // Automatically generated from the tree-sitter grammar; do not edit\n\
+         // To regenerate, {}\n",
+        languages[0].name, regenerate_instructions
     )?;
 
     writeln!(dbscheme_writer, include_str!("prefix.dbscheme"))?;
diff --git a/shared/tree-sitter-extractor/src/generator/prefix.dbscheme b/shared/tree-sitter-extractor/src/generator/prefix.dbscheme
index a52390bed1aa..d59777f5e3d7 100644
--- a/shared/tree-sitter-extractor/src/generator/prefix.dbscheme
+++ b/shared/tree-sitter-extractor/src/generator/prefix.dbscheme
@@ -106,11 +106,23 @@ yaml_locations(unique int locatable: @yaml_locatable ref,
 @yaml_locatable = @yaml_node | @yaml_error;
 
 /*- Database metadata -*/
+
+/**
+ * The CLI will automatically emit applicable tuples for this table,
+ * such as `databaseMetadata("isOverlay", "true")` when building an
+ * overlay database.
+ */
 databaseMetadata(
   string metadataKey: string ref,
   string value: string ref
 );
 
+/*- Overlay support -*/
+
+/**
+ * The CLI will automatically emit tuples for each new/modified/deleted file
+ * when building an overlay database.
+ */
 overlayChangedFiles(
   string path: string ref
 );