[antlr-interest] Re: yet another java 1.5 grammar

[thrutchy]

--- In antlr-interest at yahoogroups.com, "lgcraymer" <lgc at m...> wrote:
> --- In antlr-interest at yahoogroups.com, Terence Parr <parrt at c...> wrote:
> > 
> > On Aug 25, 2004, at 11:02 AM, Michael Stahl wrote:
> ... 
> > > do you have any comment on the syntactic predicate in loops
> > > issue i have with antlr? (see original posting)
> > 
> > I'm completely underwater at the moment breathing through a small
straw 
> > ;)  I'm gearing up for school; advising students and prepping my
first 
> > classes.  Ugh.  I expect to surface next week sometime. :)
> 
> Ter may be completely under water at the moment, but the "synpreds in
> loops" issue has been raised as an ANTLR 3 design concern and one that
> will probably be addressed.  Right now, you can use synpreds in
> recursive definitions, but not in loops.  That rules out an important
> class of refactorings:  it is important that logically equivalent
> constructs actually have the same behavior!
> 
> --Loring


As far as I can tell, syntactic predicates with loops do work - you
just have to ignore the warning.  I use a wrapper to antlr that
filters out these (one of my previous posts has it).

Eric




 
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