DiceParser

Rolisteam Dice Parser

Grammar

The grammar is something like this:

Command =: Instruction [';',Instruction]*
Instruction =: Expression
Expression =: number | number Dice DiceOperation | ScalarOperator Expression | string | variable Expression
Dice =: DiceOperator Number(faces) | DiceOperator ListOfValues
DiceOperator =: D | L
DiceOperation =: Keep | KeepAndExplose | Sort | Count | Reroll | If | Explose | RerollAndAdd | Jumpbackward | Merge | Filter | Split | Parenthese | Count | Paint | Group
ScalarOperator =: [x,-,*,x,/]
number =: [0-9]+ | constantValue
constantValue =: ${id | label}
id=[_,a-z][_,A-z,0-9]*
label=[_,a-z][_,A-z,0-9,é,è,ç,û,ê,â]*
variable = ${[0-9]+}
Validator =: BooleanValidator | RangeValidator | CompositeValidator
CompositeValidator =: Validator LogicOpetator Validator
LogicOpetator =: = | > | => | < | =<
RangeValidator =: [ number - number ]
BooleanValidator =: number | [operator number] |
ListOfValue=: String[Range],ListOfValue | String[Range]
String =: [A-z0-9]+
Keep =: k Number
KeepAndExplose =: K number
Reroll =: r
Explosing =: e
RerollOnceAndAdd =: a
RerollAndAdd =: A
Painter =: p
Split =: u
Group =: g
Sort =: s
If =: i compareMethod [Validator] {Expression}[{Expression}]
Paint =: p [ Count : color ]
Group =: number
Explose =: e Validator
Jumpbackward =: @DiceOperation
Merge =: m | m Expression
Filter =: f Validator
Parenthese =: (expression)
Count =: c Validator

Example:

3D100

Roll 3 dice with 100 faces

10D10e[=10]s

Roll 10 dice with 10 faces, 10 exploses, and sort the result.

100291D66666666s

roll 100291 dice with 66666666666 faces and sort result

15D10c[>7]

roll 15 dice with 10 faces and it counts number of dice which are above 7

1D8+2D6+7

roll 1 die with 8 faces and add the result to 2 dice with 6 faces and add 7.

D25

roll 1 die with 25 faces

88-1D20

88 minus the value of 1 die of 20 faces

8+8+8

compute: 24

100/28*3

compute: 100/28 = 3 3*3 = 9

More examples at : https://github.com/Rolisteam/DiceParser/blob/master/HelpMe.md