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Re: incorrect yychar for unambiguous GLR


From: Joel E. Denny
Subject: Re: incorrect yychar for unambiguous GLR
Date: Wed, 11 Jan 2006 20:53:28 -0500 (EST)

On Tue, 10 Jan 2006, Joel E. Denny wrote:

> On Tue, 10 Jan 2006, Paul Hilfinger wrote:
> 
> > As things stand, this organization will slightly expand the size of a
> > yyGLRStackItem in some cases.  How about the following definition of 
> > yySemanticOption instead?
> > 
> >     struct yySemanticOption {
> >       /** Type tag: always false. */
> >       yybool yyisState;
> >       /** The lookahead symbol for this reduction.  */
> >       short yyrawchar;
> >       /** Semantic value of the lookahead for this reduction. */
> >       YYSTYPE yyval;
> >       /** Location of the lookahead for this reduction. */
> >       YYLTYPE yyloc;
> >       /** The last RHS state in the list of states to be reduced. */
> >       yyGLRState* yystate;
> >       /** Next sibling in chain of options. To facilitate merging,
> >        *  options are chained in decreasing order by address. */
> >       yySemanticOption* yynext;
> >     };
> 
> That makes sense.  I suppose yyrule can go after yyloc.

Would you like to commit this as well?

Joel




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