# /* ************************************************************************** | |
# * * | |
# * (C) Copyright Paul Mensonides 2002. | |
# * Distributed under the Boost Software License, Version 1.0. (See | |
# * accompanying file LICENSE_1_0.txt or copy at | |
# * http://www.boost.org/LICENSE_1_0.txt) | |
# * * | |
# ************************************************************************** */ | |
# | |
# /* See http://www.boost.org for most recent version. */ | |
# | |
# ifndef BOOST_PREPROCESSOR_SEQ_FILTER_HPP | |
# define BOOST_PREPROCESSOR_SEQ_FILTER_HPP | |
# | |
# include <boost/preprocessor/config/config.hpp> | |
# include <boost/preprocessor/control/expr_if.hpp> | |
# include <boost/preprocessor/facilities/empty.hpp> | |
# include <boost/preprocessor/seq/fold_left.hpp> | |
# include <boost/preprocessor/seq/seq.hpp> | |
# include <boost/preprocessor/tuple/elem.hpp> | |
# include <boost/preprocessor/tuple/rem.hpp> | |
# | |
# /* BOOST_PP_SEQ_FILTER */ | |
# | |
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() | |
# define BOOST_PP_SEQ_FILTER(pred, data, seq) BOOST_PP_SEQ_TAIL(BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_SEQ_FOLD_LEFT(BOOST_PP_SEQ_FILTER_O, (pred, data, (nil)), seq))) | |
# else | |
# define BOOST_PP_SEQ_FILTER(pred, data, seq) BOOST_PP_SEQ_FILTER_I(pred, data, seq) | |
# define BOOST_PP_SEQ_FILTER_I(pred, data, seq) BOOST_PP_SEQ_TAIL(BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_SEQ_FOLD_LEFT(BOOST_PP_SEQ_FILTER_O, (pred, data, (nil)), seq))) | |
# endif | |
# | |
# if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_STRICT() | |
# define BOOST_PP_SEQ_FILTER_O(s, st, elem) BOOST_PP_SEQ_FILTER_O_IM(s, BOOST_PP_TUPLE_REM_3 st, elem) | |
# define BOOST_PP_SEQ_FILTER_O_IM(s, im, elem) BOOST_PP_SEQ_FILTER_O_I(s, im, elem) | |
# else | |
# define BOOST_PP_SEQ_FILTER_O(s, st, elem) BOOST_PP_SEQ_FILTER_O_I(s, BOOST_PP_TUPLE_ELEM(3, 0, st), BOOST_PP_TUPLE_ELEM(3, 1, st), BOOST_PP_TUPLE_ELEM(3, 2, st), elem) | |
# endif | |
# | |
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_DMC() | |
# define BOOST_PP_SEQ_FILTER_O_I(s, pred, data, res, elem) (pred, data, res BOOST_PP_EXPR_IF(pred(s, data, elem), (elem))) | |
# else | |
# define BOOST_PP_SEQ_FILTER_O_I(s, pred, data, res, elem) (pred, data, res BOOST_PP_EXPR_IF(pred##(s, data, elem), (elem))) | |
# endif | |
# | |
# /* BOOST_PP_SEQ_FILTER_S */ | |
# | |
# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG() | |
# define BOOST_PP_SEQ_FILTER_S(s, pred, data, seq) BOOST_PP_SEQ_TAIL(BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_SEQ_FOLD_LEFT_ ## s(BOOST_PP_SEQ_FILTER_O, (pred, data, (nil)), seq))) | |
# else | |
# define BOOST_PP_SEQ_FILTER_S(s, pred, data, seq) BOOST_PP_SEQ_FILTER_S_I(s, pred, data, seq) | |
# define BOOST_PP_SEQ_FILTER_S_I(s, pred, data, seq) BOOST_PP_SEQ_TAIL(BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_SEQ_FOLD_LEFT_ ## s(BOOST_PP_SEQ_FILTER_O, (pred, data, (nil)), seq))) | |
# endif | |
# | |
# endif |