Re: inserting into tab.h, after %union

[Hans Aberg]

On 7 Dec 2006, at 05:25, Joel E. Denny wrote:

> Actually, names with words like "before" and "after" are not  
> completely
> language-independent.  Imagine Java where declaration order is
> unimportant, and thus there's no need for this distinction.

Yeah, I had some such in mind. It might happen for a language like  
Haskell, as well. Though, I do not know how far, one should carry it.

> > Now, I think that the Bison setup isn't even
> > designed for handling redefinition of YYSTYPE. So I do not  
> > immediately see
> > exactly what is needed, and how the current Bison commands will  
> > support that.
>
>  -- Directive: %requires {CODE}
>      This is the right place to write dependency code for externally
>      exposed definitions required by Bison.  Such exposed definitions
>      are those usually appearing in the parser header file.  Thus,  
> this
>      is the right place to define types referenced in `%union {CODE}'
>      directives, and it is the right place to override Bison's default
>      `YYSTYPE' and `YYLTYPE' definitions.
>
> In 2.3a, %requires was called %start-header.  Let me know if it  
> doesn't
> work for you.

I will have to try getting my stuff working for current Bison. Then  
I'll know better.

  Hans Aberg