Re: [Boost-users] [preprocessor] using __FILE__ with BOOST_PP_FILENAME_x

Server Levent Yilmaz wrote:

Hi all,

Please take a look as this trivial example of file iteration:

[... code]

Perhaps not so obvious many (wasn't to me), that

#define BOOST_PP_FILENAME_1 __FILE__

doesn't work.

Yes, because it /always/ expands to the current file (also in the file loaded with #include BOOST_PP_ITERATE()).

One has to specify (kind of like hardcode) the file's name in there.. Is there some, possibly contrived, way to achieve automation of this?

#include #define MIN 0 #define MAX 9 #ifndef RESET_DONE # define BOOST_PP_VALUE MIN # include BOOST_PP_ASSIGN_SLOT(1) # define RESET_DONE #endif ***** * BOOST_PP_SLOT(1) * ***** #if BOOST_PP_SLOT(1) < MAX # define BOOST_PP_VALUE BOOST_PP_SLOT(1)+1 # include BOOST_PP_ASSIGN_SLOT(1) # include __FILE__ #else # undef RESET_DONE #endif Please note this code has several limitations, however: 1. The #include __FILE__ part is not handled correctly by all preprocessors. 2. You might want to partially unroll the iteration not to hit internal limits too easily.

PS: What an AMAZING library this Boost.Preprocessor is!?

See its successor to be SHOCKED :-) http://sf.net/projects/chaos-pp Regards, Tobias