[antlr-interest] ... my error rose a syntactic predicate problem in tree parsers

[Anthony Brenelière]

Yes, the syntactic predicate was only needed when i had that
non-determinism error.

So i added a syntactic predicate because i had the set rule that was
identified with the token R_ENT instead of the token R_SET.

But yes, a tree should be done in a way with no needed syntactic
predicate.

Cheers,
Anthony


> I avoid syntactic predicates in my tree parser by rearranging my tree
and
> using imaginary node types when appropriate.  You should not need a
rule
> like this:
> entOrSet
> 	:	( R_ENT )=> entity
> 	|	( R_SET )=> set
> ;
> 
> This should work fine:
> 
> entOrSet
> 	:	entity
> 	|	set
> ;
> 
> Monty
> 



 

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