[antlr-interest] Re: How to deal with languages with preprocessor s?
micheal_jor
open.zone at virgin.net
Fri Apr 5 12:09:25 PST 2002
Hi Monty,
Thanks for your comments....
--- In antlr-interest at y..., mzukowski at b... wrote:
> > Any ideas please?. How to deal with the preprocessor directives
in
> > C/C++ and C#.
>
> For the GCC parser I run the preprocessor externally.
What does this mean?. What preprocessor do you run externally?. Is it
a separate Lexer/Parser that you generated using ANTLR as well?
> If you prefer to do
> it yourself then you might want to make it a filter stream.
I'll search the FAQ for "filter stream". Thanks.
> If all you want
> to do is some includes, then you can handle that in the parser by
opening a
> new parser and lexer, feeding it the included filename, then
attaching the
> resulting tree to your current tree.
Thanks. I would need to hndle the whole gamut of preprocessor
directives in the C language family.
> > Is this handled in the Lexer or in the Parser. Any [simple-ish or
> > clear] examples please?
>
> If there's not an example in the examples directory then there is
probably a
> FAQ about it.
I haven't found one in the FAQ I downloaded yet. I'll keep looking.
Thanks
Micheal
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