| # /* ************************************************************************** |
| # * * |
| # * (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 |