On 17/05/07, Brian Paul <[EMAIL PROTECTED]> wrote:
> Ian Romanick wrote:
> > Is there an easy way in this parser generator to change the grammar for
> > the TXP instruction? Basically, I want it to be invalid to use TXP with
> > the SHADOWARRAY2D target.
>
> Michael would have to answer that. Michael?
>
I will look at it tomorrow.
>
> > Alternately, is there a reason we're using this instead of lex & yacc?
>
> I think Michael just used what was familiar to him.
>
>
> > I used lex & yacc to write a unified parser for another project that
> > handles ARB_{vertex,fragment}_program (up to vp3 and fp2), the various
> > NV vertex and fragment programs, and ATI_text_fragment_shader. I could
> > probably adapt it to work with Mesa without too much trouble.
> >
> > Opinions?
>
> I guess I'd prefer using standard tools like lexx and yacc. Though, I'd
> do research to see if there's anything newer/nicer nowadays.
>
If my memory serves me right, there was at least one attempt in the
past to kill off those syn files, but they are still alive to this
day.
Ian, if this is no problem for you, feel free to replace it with yacc
grammars, just please keep the old ones #ifdefed for a while, if
possible. The reason I used custom grammar in the first place was that
I wasn't aware of any (not only open source) compiler-compiler (lack
of Internet!) so I just invented one.
--
Pozdrawiam,
Michal Krol
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