[antlr-interest] ambiguous lexer rules

[Kay Roepke]

On Jul 19, 2007, at 3:12 AM, Christoph Beckmeyer wrote:

> I have a problem with the overlapping rules  ID and  INT. I tried  
> to solve it in multiple ways but none of them resulted in success.
> Can somebody give me a hint how to handle this.

What are you trying to solve?

> grammar Test;
> ID		: 	'10';
> INT		: DIGIT+;
> fragment DIGIT	:	'0'..'9';
> SEP_L1		:	';';
> SEP_L2		:	',';		
> field	: ID SEP_L2 INT SEP_L1;

This grammar results in the following parse tree to me:
Input : 10,984;
Parse tree:
(field ID SEP_L2 INT SEP_L1)

Isn't that what you wanted?

cheers,
-k
-- 
Kay Röpke
http://classdump.org/