Subj : Re: How can I get rid of #define in my generated C code ...?
To   : comp.programming
From : Alex Fraser
Date : Mon Oct 10 2005 02:23 am

"Bahram" <bsaghari@comcast.net> wrote in message
news:1128902459.459289.314210@z14g2000cwz.googlegroups.com...
> I am using lex and yacc for a project I am working on, wondering if
> there is any switch I can specify ANYWHERE, including the C compiler,
> that would take the .c files that these utilities generate, and get rid
> of all the #defines in the generated code.
> (when I say get rid of, I don't mean to simply delete, I mean to
> recognize: Oh yes, this is defined and here is what I want to do.)

Some compilers provide such an option, eg gcc -E. This doesn't just get rid
of #defines though, it fully preprocesses the code.

> The y.tab.c and lex.yy.c files that these utilities produce are
> infested with #define, a lot conditional, making them impossible to
> read, and modify (e.g. yes, I need to make some changes to them)

I think you are asking the wrong question. You should be asking how to fix
the (unspecified) problem with the parser, not how to implement your
proposed fix. Modifying generated code - at least by hand - is a Really Bad
Idea IMO.

Alex

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