Hi Gabriel,
It would help if you could post your entire grammar and the exact error
message here.
Also, don't you mean
LPAREN: '(";
RPAREN: ')';
Don't worry we have all been there.
Thanks, Eric
On Fri, Sep 9, 2011 at 5:34 PM, Gabriel Miro <[email protected]> wrote:
> Hello all!
> I'm new to ANTLR and I'm trying to build a simple grammar that can
> recognize
> strings like ('val'). I'm using ANTLRWORKS and it generates a rule for
> string values with single quotes and I mapped the parenthesis to lexer
> tokens:
>
> RPAREN:'(';
> LPAREN:')';
> ...
> STRING
> : '\'' ( ESC_SEQ | ~('\\'|'\'') )* '\''
> ;
>
>
> Now, if I try to write the following:
>
> rule : RPAREN STRING
>
> and evaluate the input ('blah', I get an error in the interpreter. I have
> no
> idea why, but I'm thinking the STRING rule is evaluating EOF and returning
> an error.
>
> Any ideas on how to make this work?
>
> Regards,
> Gabriel Miró
> ANTLR Newbie
>
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