Re: [boost] Preprocessor Library

From: David Abrahams (david.abrahams_at_[hidden])
Date: 2002-04-10 14:14:19

----- Original Message -----
From: "Vesa Karvonen" <vesa_karvonen_at_[hidden]>

> David Abrahams:
> >4. Things aren't so simple when there conditional compilation to work
> >around compiler bugs is involved.
>
> An alternative to conditional preprocessor directives is to use
> BOOST_PP_IF() and BOOST_PP_EXPR_IF() to select between workarounds.
This
> might help in some cases.

Not when you're generating expanded code, you see. My (minor) problem is
that I can't really generate the text of the file I need, in part
because that file must contain preprocessor directives.

> >I'd still /really/ like a way to compare two C++ token streams.
> >When converting handwritten C++ to PP stuff having a way to verify
> >your work is indispensable. This point and #3 I could probably
> >handle with a simple Python script.
>
> It should not be very difficult to write a lexer for C++. Once the
lexer is
> done, it should be trivial to create a program to compare two C++
source
> files. For verification purposes, a complete lexer is probably not
> necessary. A program that would simply remove all white space and
lines
> starting with a # might be good enough (but it does not catch all
errors).

Yeah, I know. When I get a few spare hours ;-).