Antlr - mismatched input error - token not recognised

debugcn Published at Dev

ssdimmanuel

I have the following ANTLR grammar.

grammar DDGrammar;

ddstmt: dd2 EOF;

dd2: splddstart inlinerec;
splddstart: '//' NAME DDWORD '*' NL;
inlinerec: NON_JCL_CARD* END_OF_FILE ;

DDWORD:'DD';
//DUMMYWORD: 'DUMMY';

NAME: [A-Z@#$]+;

NON_JCL_CARD  : ~'/'  {getCharPositionInLine() == 1}? .*? ( NL | EOF ) ;
END_OF_FILE   : '/'  {getCharPositionInLine() == 1}? '*' ;

NL  : '\r' '\n' ;
WS  : [ \t]+ -> skip ;

For the input :

//SYSIN    DD  *     
SORT FIELDS=COPY
INCLUDE COND
any other program input @ $ ! & %
/*

I get the following error.

DDGrammar::ddstmt:1:2: mismatched input 'SYSIN DD * \r\n' expecting NAME Looks like SYSIN is not recognised as a NAME token. Actually a similar grammar did work sometime back. See mismatched input error. But now the same doesnt seem to work for me.

Bart Kiers

My guess is that you didn't regenerate the parser/lexer classes since the following code works just fine:

String source = "//SYSIN    DD  *     \r\n" +
        "SORT FIELDS=COPY\r\n" +
        "INCLUDE COND\r\n" +
        "any other program input @ $ ! & %\r\n" +
        "/*";

DDGrammarLexer lexer = new DDGrammarLexer(CharStreams.fromString(source));
DDGrammarParser parser = new DDGrammarParser(new CommonTokenStream(lexer));

parser.ddstmt();

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