[antlr-interest] Grammar for block comments?

[Jim Idle]

On Thu, 2008-07-17 at 20:38 +1200, Gavin Lambert wrote:

> At 19:56 17/07/2008, Andy Doddington wrote:
>  >I haven't had a chance to test this in my app, but when I run it 
> 
>  >inside AntlrWorks I get a:
>  >
>  >            FailedPredicateException(COMMENT, {synpred1}?)
> 
> ANTLRworks reacts strangely to predicates sometimes, so it could 
> just be that.  But another thing you could try is to reverse the 
> order of the alts within the * block.
> 

Well, with ANTLR Works 1.2b5, the following grammar works perfectly:

grammar test;

prog:	(COMMENT | OTHER)+ ;

COMMENT
	:	 '/*' (options {greedy = false;} : .)* '*/' ;
	
OTHER 
	:	 .
	;
	
Using input:

/* XYZ * */
SOME OTHER STUF F*/

What version of ANTLR are you using again? I use this same construct in
quite a number of grammars and have not had problems with it. Perhaps
there is something else in your lexer spec that is interfering?

Jim
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