Christian Schladetsch wrote:
Why has the PP received so little attention over the years, from its early use as M4?
There is a library around the C preprocessor in Boost, Boost.Preprocessor (or Boost.PP, depending on how you want to call it). It allows to do very powerful things and it is the most advanced usage of the C preprocessor I've seen. It is widely used by most Boost libraries.
We have Boost.Wave to start with... Why not give it real Expressions? Loops? Scopes? Classes? Templates? memory management? IO?
Expressions, loops, scopes can already be done. For classes, just use tuples. Templates and memory management don't make much sense; IO can be done in terms of #warning or something like that.
Is there any interest in a Boost.C++ ?
You mean an implementation of C++, implemented as a post-processor over another compiler, that would add new features? I believe this could be interesting, but mainly to fix deficiencies or to add future standard features not available in compilers yet.