mirror of
https://github.com/Retera/WarsmashModEngine.git
synced 2022-07-31 17:38:59 +02:00
169 lines
2.5 KiB
Plaintext
169 lines
2.5 KiB
Plaintext
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/**
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* Define a grammar called Hello
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*/
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grammar Jass;
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@header {
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package com.etheller.interpreter;
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}
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program :
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newlines
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newlines_opt
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typeDefinitionBlock
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(block)*
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(functionBlock)*
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;
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typeDefinition :
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TYPE ID EXTENDS ID newlines
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;
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type :
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ID # BasicType
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ID ARRAY # ArrayType
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'nothing' # NothingType
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;
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global :
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type ID newlines # BasicGlobal
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type ID assignTail newlines # DefinitionGlobal
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;
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assignTail:
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EQUALS expression;
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expression:
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ID # ReferenceExpression
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STRING_LITERAL #StringLiteralExpression
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INTEGER #IntegerLiteralExpression
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FUNCTION ID #FunctionReferenceExpression
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NULL # NullExpression
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TRUE # TrueExpression
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FALSE # FalseExpression
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ID '[' expression ']' # ArrayReferenceExpression
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functionExpression # FunctionCallExpression
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'(' expression ')' # ParentheticalExpression
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;
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functionExpression:
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ID '(' argsList ')'
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;
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argsList:
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expression # SingleArgument
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expression ',' argsList # ListArgument
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#EmptyArgument
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;
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//#booleanExpression:
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// simpleArithmeticExpression # PassBooleanThroughExpression
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// |
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statement:
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CALL functionExpression newlines #CallStatement
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SET ID EQUALS expression newlines #SetStatement
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SET ID '[' expression ']' EQUALS expression newlines # ArrayedAssignmentStatement
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RETURN expression newlines # ReturnStatement
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;
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param:
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type ID;
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paramList:
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param # SingleParameter
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param ',' paramList # ListParameter
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'nothing' # NothingParameter
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;
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globalsBlock :
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GLOBALS newlines (global)* ENDGLOBALS newlines ;
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typeDefinitionBlock :
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(typeDefinition)*
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;
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nativeBlock:
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NATIVE ID TAKES paramList RETURNS type newlines
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;
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block:
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globalsBlock
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nativeBlock
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;
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functionBlock:
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FUNCTION ID TAKES paramList RETURNS type newlines (statement)* ENDFUNCTION newlines
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;
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newlines:
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NEWLINES
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EOF;
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newlines_opt:
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NEWLINES
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EOF
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;
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EQUALS : '=';
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GLOBALS : 'globals' ; // globals
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ENDGLOBALS : 'endglobals' ; // end globals block
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NATIVE : 'native' ;
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FUNCTION : 'function' ; // function
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TAKES : 'takes' ; // takes
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RETURNS : 'returns' ;
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ENDFUNCTION : 'endfunction' ; // endfunction
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CALL : 'call' ;
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SET : 'set' ;
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RETURN : 'return' ;
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ARRAY : 'array' ;
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TYPE : 'type';
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EXTENDS : 'extends';
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STRING_LITERAL : ('"'.*?'"');
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INTEGER : [0]|([1-9][0-9]*) ;
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NULL : 'null' ;
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TRUE : 'true' ;
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FALSE : 'false' ;
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ID : ([a-zA-Z_][a-zA-Z_0-9]*) ; // match identifiers
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WS : [ \t]+ -> skip ; // skip spaces, tabs
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NEWLINES : NEWLINE+;
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fragment NEWLINE : '\r' '\n' | '\n' | '\r' | ('//'.*?'\n');
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