Re: yyerror and pure parsers

[wim delvaux]

On Saturday 24 January 2004 18:39, Hans Aberg wrote:
> At 02:18 -0500 2004/01/24, Alfonso Urdaneta wrote:
> >wim delvaux wrote:
> >> Is there any way to access the arguments passed to yyparse
> >>(YYPARSE_PARAM or
> >> equivalent -- see previous mail) within the yyerror function ?
> >
> >sorry dude, haven't done that stuff before.  maybe hans knows.
>
> I have no idea if it is possible to do with the standard skeleton file. But
> with Bison's M4 approach, it is fairly easy to write ones own new skeleton
> file (by modifying the standard one), where this becomes possible.
>
> If you want such rewrites should be included in future Bison distributions,
> that should be discussed in the Bug-Bison list.
>
>   Hans Aberg

        I have looked at an example of flex which includes a sample with a 
pure-parser bison.

        I noticed that they use %parse-param and %flex-param (or lex-param ?) 
but 
these options are not documented in the bison 'info' file.

        Is that an omission ? Hidden Feature ? Internal Feature ? ???

        W