Re: [boost] py_cpp and ILU?

From: Daniel Berlin (dan_at_[hidden])
Date: 2000-10-14 17:54:03

Jan Dries <jdries_at_[hidden]> writes:

> David Abrahams wrote:
> > 
> > > Now to something more concrete.  About this C++ parser.  What exactly
> > > do you want?  I really dont know much about this kind of stuff.  Would
> > > it be possible to create a c++ parser in python or does it have to be
> > > in c++?  Python would be the easiest to code, right?
> > 
> > Well, maybe, but there are surely many existing parsers out there already in
> > C/C++ using YACC and BISON. I think you'll find a BISON-based parser in the
> > Doxygen sources.
> 
> Somewhere early 1999 I spent quite some effort to find a good parser for
> C++. Unless things have changed since then, you will find it extremely
> hard to find one that is reasonably complete and up to date with the C++
> standard. The last time I looked at Doxygen, it didn't even have a Yacc
> (Bison) based parser, but solved all in a lexer with states. The same by
> the way holds for just about all these doc and related tools that
> process C++ code, and they all choke on perfectly valid code at one
> point or another. One of the reasons I was looking for such a parser was
> because I wanted a better doc tool, one that would understand more of
> the language.
> I think that one of the only Yacc grammers that you can really trust
> (and that is freely available) is the one you find in the GCC sources.
> And I fear, as you also pointed out at the end of your mail, that if you
> want something that really understands C++ well, you will end up needing
> a much larger part from GCC than just the .y and .l files.
> 
>

Right.
I did the same in-depth research.
The only actual good C++ parser, besides the one in the gcc sources,
which is horrendous to integrate into anything else, is the one in
OpenC++.
--Dan