[antlr-interest] Re: Comments and questions on a recent proje ct

Tiller, Michael (M.M.) mtiller at ford.com
Wed Aug 28 10:57:59 PDT 2002


Just one thing to point out.  Even though it complains about this, the parser seems to do what I want, under the different cases I have tested.  So my main goal here is to get rid of the warning.

--
Mike

> -----Original Message-----
> From: Tiller, Michael (M.M.) [mailto:mtiller at ford.com]
> Sent: Wednesday, August 28, 2002 1:44 PM
> To: 'antlr-interest at yahoogroups.com'
> Subject: RE: [antlr-interest] Re: Comments and questions on a recent
> proje ct
> 
> 
> One other question.  I have a rule where there is an 
> ambiguity between one alternative in a block and the exit of 
> the block.  I'd like to try and use syntactic predicates to 
> avoid this situation.  I understand how to use syntactic 
> predicates to control choice of alternatives within a rule.  
> How can you use them when one of the choices is an exit from 
> a rule?!?  I tried moving the syntactic predicate up one 
> level in the grammar, but I still get non-deterministic 
> warnings in the original rule.
> 
> I saw this in the ANTLR documentation:
> 
> a
>     : (A (P)*) => A (P)*
>     | A
>     ;
> 
> This was pretty close to what I have, but it didn't seem to 
> make a difference.
> 
> Any suggestions?
> 
> --
> Mike
> 
>  
> 
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