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// Lexer and parser in separate files.
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// antlrlab examples/split/CalcLexer.g4 examples/split/CalcParser.g4 examples/split/input.txt
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lexer grammar CalcLexer;
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PLUS : '+' ;
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MINUS : '-' ;
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STAR : '*' ;
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SLASH : '/' ;
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LPAREN : '(' ;
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RPAREN : ')' ;
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ASSIGN : '=' ;
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SEMI : ';' ;
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NUMBER : [0-9]+ ('.' [0-9]+)? ;
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IDENT : [a-zA-Z_] [a-zA-Z_0-9]* ;
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LINE_COMMENT : '//' ~[\r\n]* -> channel(HIDDEN) ;
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WS : [ \t\r\n]+ -> skip ;
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