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| # /* Copyright (C) 2001
| # * Housemarque Oy
| # * http://www.housemarque.com
| # *
| # * 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)
| # */
| #
| # /* Revised by Paul Mensonides (2002) */
| #
| # /* See http://www.boost.org for most recent version. */
| #
| # ifndef BOOST_PREPROCESSOR_LIST_FILTER_HPP
| # define BOOST_PREPROCESSOR_LIST_FILTER_HPP
| #
| # include <boost/preprocessor/config/config.hpp>
| # include <boost/preprocessor/control/if.hpp>
| # include <boost/preprocessor/list/fold_right.hpp>
| # include <boost/preprocessor/tuple/elem.hpp>
| # include <boost/preprocessor/tuple/rem.hpp>
| #
| # /* BOOST_PP_LIST_FILTER */
| #
| # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
| # define BOOST_PP_LIST_FILTER(pred, data, list) BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_LIST_FOLD_RIGHT(BOOST_PP_LIST_FILTER_O, (pred, data, BOOST_PP_NIL), list))
| # else
| # define BOOST_PP_LIST_FILTER(pred, data, list) BOOST_PP_LIST_FILTER_I(pred, data, list)
| # define BOOST_PP_LIST_FILTER_I(pred, data, list) BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_LIST_FOLD_RIGHT(BOOST_PP_LIST_FILTER_O, (pred, data, BOOST_PP_NIL), list))
| # endif
| #
| # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
| # define BOOST_PP_LIST_FILTER_O(d, pdr, elem) BOOST_PP_LIST_FILTER_O_D(d, BOOST_PP_TUPLE_ELEM(3, 0, pdr), BOOST_PP_TUPLE_ELEM(3, 1, pdr), BOOST_PP_TUPLE_ELEM(3, 2, pdr), elem)
| # else
| # define BOOST_PP_LIST_FILTER_O(d, pdr, elem) BOOST_PP_LIST_FILTER_O_I(d, BOOST_PP_TUPLE_REM_3 pdr, elem)
| # define BOOST_PP_LIST_FILTER_O_I(d, im, elem) BOOST_PP_LIST_FILTER_O_D(d, im, elem)
| # endif
| #
| # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_DMC()
| # define BOOST_PP_LIST_FILTER_O_D(d, pred, data, res, elem) (pred, data, BOOST_PP_IF(pred(d, data, elem), (elem, res), res))
| # else
| # define BOOST_PP_LIST_FILTER_O_D(d, pred, data, res, elem) (pred, data, BOOST_PP_IF(pred##(d, data, elem), (elem, res), res))
| # endif
| #
| # /* BOOST_PP_LIST_FILTER_D */
| #
| # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
| # define BOOST_PP_LIST_FILTER_D(d, pred, data, list) BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_LIST_FOLD_RIGHT_ ## d(BOOST_PP_LIST_FILTER_O, (pred, data, BOOST_PP_NIL), list))
| # else
| # define BOOST_PP_LIST_FILTER_D(d, pred, data, list) BOOST_PP_LIST_FILTER_D_I(d, pred, data, list)
| # define BOOST_PP_LIST_FILTER_D_I(d, pred, data, list) BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_LIST_FOLD_RIGHT_ ## d(BOOST_PP_LIST_FILTER_O, (pred, data, BOOST_PP_NIL), list))
| # endif
| #
| # endif
|
|
