Re: oct2mat script based on parse tree

[Muthiah Annamalai]

> John W. Eaton wrote:
>   
> > On  9-Jan-2008, Muthiah Annamalai wrote:
> >
> > | John W. Eaton wrote:
> > | > On  9-Jan-2008, Muthiah Annamalai wrote:
> > | >
> > | > | we have some
> > | > | issues,like I didnt have boolean expressions involving strings folded 
> > | > | over.
> > | >
> > | > I don't understand what you mean by that.
> > | >
> > | > jwe
> > | >   
> > | This is the boolean exp -> const , folding I was talking about.
> >
> > OK.  I suppose it would be useful to have an option to turn off any
> > optimizations that happen in the parser.  It should be easy to do, and
> > I see that as independent of your tree walking code.
> >
> > jwe
> >
> >   
> >     
> I have attached a patch to allow conditional tree folding.
> It works using the global variable
>
> bool parser_folding_and_optimization_flag;
>
> which user must push onto unwind stack, and use
> the accessor functions
>
> parser_enable/disable_optimization()
>
> and query by
>
> parser_require_optimization()
>
> I have one problem however, the various symbols are not exported,
> and I think it maybe due to a clock-skew in my box, which I cannot fix.
> So I hope this patch is correct. Waiting for my build to complete.
> The changes are correct syntactic/semantically however.
>   
I can confirm the patch works as expected. The clock-skew
was the culprit.
-Muthu