[antlr-interest] string recognition

[mzukowski at bco.com]

> I tried this:
> 
> WHITESPACE : '\r' | '\n' | '\t' ;
> STRING : QUOTE (~(WHITESPACE))* QUOTE ;
> 
> but I got ambiguity problem reported from ANTLR during class 
> creating.

Which is because QUOTE is part of ~(WHITESPACE).  Try ~(WHITESPACE | QUOTE).
If you allow escaping of a quote you will have to handle that separately.
See, for instance, STRING in the java.g grammar.

Monty

 

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