[antlr-interest] Duplicate nodes on a parse tree

[Markus Kuhla]

Morning,

I passed the parser to the ParseTreeBuilder constructor. In the methods of this class where child nodes are added, I checked parser.getBacktrackingLevel(). It always returned 0 (I don't use the explicit option backtrack in the grammar).

Any further hints?
Thanks,
Markus

> Hmm...shoot. Ok, it needs to have a constructor with a pointer to the  
> parser itself so it can ask for the backtracking state.  can you try  
> that out?
> 
> Ter
> On Jun 22, 2007, at 10:07 AM, Markus Kuhla wrote:
> 
> > Hi!
> >
> > Vadim Tropashko vadimtro at yahoo.com wrote:
> >> OK, I see the coloring (when tree is in chart form).
> >> It must be the Tree.getType() method that does this.
> > (http://www.antlr.org/pipermail/antlr-interest/2007-March/ 
> > 019566.html)
> >
> > I'm using the ParseTree and was wondering if there is a way to  
> > remove these duplicate nodes (for backtracking) from the ParseTree?  
> > As I checked the above described getType() for each node in the  
> > tree, I always got 0 (zero).
> >
> >
> > Thanks folks for you help!!!
> > Best,
> > Markus
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