Hi,
Any clue why this doesn't work? I'm still clueless.
- Indhu
Indhu Bharathi wrote:
> I was working in a big grammar and stumbled on a problem with
> predicates. I've simplified the problem as much as possible and here it is:
>
> When I give the input "1.", I expect the tokens <INT_LIT, DOT>. But what
> I get is "No viable alternative at character 'EOF'. I'm not able to
> understand why this happens. Any pointers?
>
> grammar Test;
>
> r : INT_LIT DOT+
> ;
>
> INT_FLOAT_PATTERN
> : (NUMBER DOT NUMBER LETTER ) => NUMBER DOT NUMBER LETTER
> { $type=PATTERN; }
>
> | ( NUMBER DOT NUMBER ) => NUMBER DOT NUMBER
> { $type=FLOAT_LIT; }
>
> | (NUMBER) => NUMBER
> { $type=INT_LIT; }
>
> ;
>
> DOT : '.'
> ;
>
> fragment PATTERN
> : ;
>
> fragment FLOAT_LIT
> : ;
>
> fragment INT_LIT
> : ;
>
>
> fragment
> NUMBER : ('0'..'9')+
> ;
>
> fragment
> LETTER : 'a'..'z'
> ;
>
>
> Thanks, Indhu
>
>
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