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Merge pull request #12 from sybila/huctl
Huctl
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5 changes: 4 additions & 1 deletion
5
src/main/antlr/CTL.g4 → .../antlr/com/github/sybila/ctl/antlr/CTL.g4
100644 → 100755
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| grammar HUCTL; | ||
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| @header { | ||
| package com.github.sybila.huctl.antlr; | ||
| } | ||
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| /* Main format structure */ | ||
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| root : fullStop? (statement fullStop)*; | ||
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| statement : ':include' STRING #includeStatement | ||
| //aliases are ambiguous - we can't decide whether they are formulas or expressions until they are resolved | ||
| | FLAG? VAR_NAME '=' (VAR_NAME | formula | dirFormula | expression) #assignStatement | ||
| ; | ||
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| fullStop : NEWLINE+ | EOF | ';'; | ||
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| /* Formula and propositions */ | ||
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| formula : VAR_NAME #id | ||
| | (TRUE | FALSE) #bool | ||
| | VAR_NAME ':' (IN | OUT) (PLUS | MINUS) #transition | ||
| | expression compare expression #proposition | ||
| | '(' formula ')' #parenthesis | ||
| | NEG formula #negation | ||
| | dirModifier? TEMPORAL_UNARY formula #unaryTemporal | ||
| //we list operators explicitly, becuase writing them as a subrule broke operator priority | ||
| | formula CON formula #and | ||
| | formula DIS formula #or | ||
| |<assoc=right> formula IMPL formula #implies | ||
| | formula EQIV formula #equal | ||
| |<assoc=right> formula dirModifierL? E_U dirModifierR? formula #existUntil | ||
| |<assoc=right> formula dirModifierL? A_U dirModifierR? formula #allUntil | ||
| | (FORALL | EXISTS) VAR_NAME setBound? ':' formula #firstOrder | ||
| | (AT | BIND) VAR_NAME ':' formula #hybrid | ||
| ; | ||
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| setBound : 'in' formula; | ||
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| dirModifier : '{' dirFormula '}'; | ||
| dirModifierL : dirModifier; | ||
| dirModifierR : dirModifier; | ||
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| /* Direction formula - used as an optional parameter for temporal operators */ | ||
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| dirFormula : VAR_NAME #dirId | ||
| | (TRUE | FALSE) #dirBool | ||
| | VAR_NAME (PLUS | MINUS) #dirProposition | ||
| | '(' dirFormula ')' #dirParenthesis | ||
| | NEG dirFormula #dirNegation | ||
| | dirFormula CON dirFormula #dirAnd | ||
| | dirFormula DIS dirFormula #dirOr | ||
| | <assoc=right> dirFormula IMPL dirFormula #dirImplies | ||
| | dirFormula EQIV dirFormula #dirEqual | ||
| ; | ||
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| /* Numeric proposition */ | ||
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| compare : EQ | NEQ | | GT | LT | GTEQ | LTEQ; | ||
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| expression : VAR_NAME #expId | ||
| | FLOAT_VAL #expValue | ||
| | '(' expression ')' #expParenthesis | ||
| //we list operators explicitly, becuase writing them as a subrule broke operator priority | ||
| | expression MUL expression #expMultiply | ||
| | expression DIV expression #expDivide | ||
| | expression PLUS expression #expAdd | ||
| | expression MINUS expression #expSubtract | ||
| ; | ||
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| /** Terminals **/ | ||
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| TRUE : ([tT]'rue' | 'tt'); | ||
| FALSE : ([fF]'alse' | 'ff'); | ||
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| IN : 'in'; | ||
| OUT : 'out'; | ||
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| PLUS : '+'; | ||
| MINUS : '-'; | ||
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| FLAG : ':?'; | ||
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| /** Path quantifiers **/ | ||
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| A : 'A'; | ||
| E : 'E'; | ||
| PA : 'pA'; | ||
| PE : 'pE'; | ||
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| PATH : (A|E|PA|PE); | ||
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| /** Temporal operators **/ | ||
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| X : 'X'; | ||
| F : 'F'; | ||
| G : 'G'; | ||
| U : 'U'; | ||
| WF : 'wF'; | ||
| WX : 'wX'; | ||
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| TEMPORAL_UNARY : PATH (X|G|F|WF|WX); | ||
| E_U : (E|PE) U; | ||
| A_U : (A|PA) U; | ||
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| /** Logical operators **/ | ||
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| NEG : '!'; | ||
| CON : '&&'; | ||
| DIS : '||'; | ||
| IMPL : '->'; | ||
| EQIV : '<->'; | ||
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| /** first order operators **/ | ||
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| FORALL : 'forall'; | ||
| EXISTS : 'exists'; | ||
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| /** Hybrid operators **/ | ||
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| BIND : 'bind'; | ||
| AT : 'at'; | ||
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| /** Compare operators **/ | ||
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| EQ : '=='; | ||
| NEQ : '!='; | ||
| GT : '>'; | ||
| LT : '<'; | ||
| GTEQ : '>='; | ||
| LTEQ : '<='; | ||
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| /** Arithmetics **/ | ||
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| MUL : '*'; | ||
| DIV : '/'; | ||
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| /* Literals */ | ||
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| STRING : ["].+?["]; //non-greedy match till next quotation mark | ||
| VAR_NAME : [_a-zA-Z]+[_a-zA-Z0-9]*; | ||
| FLOAT_VAL : [-]?[0-9]*[.]?[0-9]+; | ||
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| NEWLINE : '\r'?'\n'; | ||
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| WS : [ \t\u]+ -> channel(HIDDEN) ; | ||
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| Block_comment : '/*' (Block_comment|.)*? '*/' -> channel(HIDDEN) ; // nesting allow | ||
| C_Line_comment : '//' .*? ('\n' | EOF) -> channel(HIDDEN) ; | ||
| Python_Line_comment : '#' .*? ('\n' | EOF) -> channel(HIDDEN) ; |
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