// (C) Copyright Tobias Schwinger | |
// | |
// Use modification and distribution are subject to the boost Software License, | |
// Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt). | |
//------------------------------------------------------------------------------ | |
// no include guards, this file is intended for multiple inclusion | |
#ifndef BOOST_FT_PREPROCESSING_MODE | |
// input: BOOST_FT_mfp 0 or 1 <=> member function pointer? | |
// input: BOOST_FT_type_name BOOST_FT_type --> "R (* ..._type_name)()" (pass2) | |
#endif | |
// input: BOOST_FT_syntax type macro to use | |
// input: BOOST_FT_cc empty or cc specifier | |
// input: BOOST_FT_ell empty or "..." | |
// input: BOOST_FT_cv empty or cv qualifiers | |
// input: BOOST_FT_flags single decimal integer encoding the flags | |
// output: BOOST_FT_n number of component types (arity+1) | |
// output: BOOST_FT_arity current arity | |
// output: BOOST_FT_type macro that expands to the type | |
// output: BOOST_FT_tplargs(p) template arguments with given prefix | |
// output: BOOST_FT_params(p) parameters with given prefix | |
#ifdef __WAVE__ | |
# pragma wave option(preserve: 0) | |
#endif | |
#ifndef BOOST_FT_ARITY_LOOP_IS_ITERATING | |
# define BOOST_FT_AL_PREPROCESSED \ | |
BOOST_FT_AL_FILE(BOOST_FT_al_path,BOOST_FT_FROM_ARITY,BOOST_FT_mfp) | |
# define BOOST_FT_AL_FILE(base_path,max_arity,mfp) \ | |
BOOST_FT_AL_FILE_I(base_path,max_arity,mfp) | |
# define BOOST_FT_AL_FILE_I(base_path,max_arity,mfp) \ | |
<base_path/arity ## max_arity ## _ ## mfp.hpp> | |
# if !defined(BOOST_FT_PREPROCESSING_MODE) | |
# if BOOST_FT_MAX_ARITY < 10 | |
# define BOOST_FT_FROM_ARITY 0 | |
# elif BOOST_FT_MAX_ARITY < 20 | |
# define BOOST_FT_FROM_ARITY 10 | |
# elif BOOST_FT_MAX_ARITY < 30 | |
# define BOOST_FT_FROM_ARITY 20 | |
# elif BOOST_FT_MAX_ARITY < 40 | |
# define BOOST_FT_FROM_ARITY 30 | |
# endif | |
# if BOOST_FT_FROM_ARITY | |
# include BOOST_FT_AL_PREPROCESSED | |
# endif | |
# elif !defined(BOOST_FT_FROM_ARITY) // single pass preprocessing | |
# define BOOST_FT_FROM_ARITY 0 | |
# elif BOOST_FT_FROM_ARITY > 0 // arity20 includes arity10 | |
BOOST_PP_EXPAND(#) include BOOST_FT_AL_PREPROCESSED | |
# endif | |
# undef BOOST_FT_AL_PREPROCESSED | |
# undef BOOST_FT_AL_FILE | |
# undef BOOST_FT_AL_FILE_I | |
# if BOOST_FT_MAX_ARITY > BOOST_FT_FROM_ARITY | |
# ifndef BOOST_FT_DETAIL_ARITY_LOOP_HPP_INCLUDED | |
# define BOOST_FT_DETAIL_ARITY_LOOP_HPP_INCLUDED | |
# include <boost/preprocessor/cat.hpp> | |
# include <boost/preprocessor/tuple/eat.hpp> | |
# include <boost/preprocessor/control/if.hpp> | |
# include <boost/preprocessor/arithmetic/inc.hpp> | |
# include <boost/preprocessor/facilities/empty.hpp> | |
# include <boost/preprocessor/facilities/expand.hpp> | |
# include <boost/preprocessor/iteration/iterate.hpp> | |
# include <boost/preprocessor/repetition/enum_params.hpp> | |
# include <boost/preprocessor/repetition/enum_shifted_params.hpp> | |
# include <boost/preprocessor/repetition/enum_trailing_params.hpp> | |
# endif | |
# define BOOST_FT_AL_INCLUDE_FILE <BOOST_FT_al_path/master.hpp> | |
# define BOOST_FT_ARITY_LOOP_PREFIX 1 | |
# include BOOST_FT_AL_INCLUDE_FILE | |
# undef BOOST_FT_ARITY_LOOP_PREFIX | |
# if !BOOST_PP_IS_ITERATING | |
# define BOOST_PP_FILENAME_1 BOOST_FT_AL_INCLUDE_FILE | |
# elif BOOST_PP_ITERATION_DEPTH() == 1 | |
# define BOOST_PP_FILENAME_2 BOOST_FT_AL_INCLUDE_FILE | |
# else | |
# error "loops nested too deeply" | |
# endif | |
# define BOOST_FT_arity BOOST_PP_ITERATION() | |
# define BOOST_FT_n BOOST_PP_INC(BOOST_FT_arity) | |
# define BOOST_FT_type \ | |
BOOST_FT_syntax(BOOST_FT_cc,BOOST_FT_type_name BOOST_PP_EMPTY)\ | |
(BOOST_FT_params(BOOST_PP_EMPTY) BOOST_FT_ell) BOOST_FT_cv | |
# define BOOST_FT_tplargs(prefx) \ | |
prefx() R BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_FT_arity,prefx() T) | |
# if !BOOST_FT_mfp | |
# define BOOST_FT_params(prefx) \ | |
BOOST_PP_IF(BOOST_FT_arity,BOOST_PP_ENUM_PARAMS, \ | |
BOOST_FT_nullary_param BOOST_PP_TUPLE_EAT(2))( \ | |
BOOST_FT_arity,prefx() T) | |
# else | |
# define BOOST_FT_params(prefx) \ | |
BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_FT_arity,prefx() T) | |
# endif | |
# if !BOOST_FT_FROM_ARITY | |
# define BOOST_PP_ITERATION_LIMITS (BOOST_FT_mfp, BOOST_FT_MAX_ARITY) | |
# else | |
# define BOOST_PP_ITERATION_LIMITS \ | |
(BOOST_FT_FROM_ARITY+1, BOOST_FT_MAX_ARITY) | |
# endif | |
# define BOOST_FT_ARITY_LOOP_IS_ITERATING 1 | |
# include BOOST_PP_ITERATE() | |
# undef BOOST_FT_ARITY_LOOP_IS_ITERATING | |
# undef BOOST_FT_arity | |
# undef BOOST_FT_params | |
# undef BOOST_FT_tplargs | |
# undef BOOST_FT_type | |
# define BOOST_FT_ARITY_LOOP_SUFFIX 1 | |
# include BOOST_FT_AL_INCLUDE_FILE | |
# undef BOOST_FT_ARITY_LOOP_SUFFIX | |
# undef BOOST_FT_AL_INCLUDE_FILE | |
# endif | |
# undef BOOST_FT_FROM_ARITY | |
#else | |
# error "attempt to nest arity loops" | |
#endif | |