[antlr-interest] Bug with tree construction
Martin Probst
mail at martin-probst.com
Wed Nov 16 10:05:53 PST 2005
Hi,
I don't have time right now (it's 7pm in Europe...) but maybe it's
because of the labels? I'll try tomorrow...
Martin
On Wed, 2005-11-16 at 09:54 -0800, Terence Parr wrote:
> On Nov 16, 2005, at 6:56 AM, Martin Probst wrote:
>
> > Hi,
> > I have the following code in a grammar file:
> >
> > varDefn:
> > kd:Kdefine_variable^ q:bindVar! (td:typeDeclaration!)?
> > { ... }
> > ( COLON_EQUALS! expr
> > | ext:Kexternal
> > { ... }
> > )
>
> Hi Martin, I just tried this grammar:
>
> a: A^ b! (c!)?
> {;}
> ( E! expr
> | D {;}
> )
> ;
>
> and it generates correct code (nothing like what you have). Very
> odd! Relevant chunks:
>
> tmp1_AST = astFactory.create(LT(1));
> astFactory.makeASTRoot(currentAST, tmp1_AST);
> match(A);
>
> correct.
>
> match(E);
> expr();
> astFactory.addASTChild(currentAST, returnAST);
>
> correct.
>
> Hmm...using 2.7.6rc1 (2005-11-04). Perhaps we've fixed something in
> 2.7.6 but I doubt it.
>
> Ter
>
>
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