19 lines
294 B
ANTLR
19 lines
294 B
ANTLR
//define a lexical analyser called Exercice6
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grammar Exercice6;
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full_expr: expr ';' EOF ;
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expr:
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| LBRA expr RBRA expr
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| LPAR expr RPAR expr
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;
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LPAR: '(' ;
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RPAR: ')' ;
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LBRA: '[' ;
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RBRA: ']' ;
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CHARS: ~[()[\]] -> skip;
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WS: [ \t\r\n]+ -> skip ; // skip spaces, tabs, newlines
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