preprocessor/detail/check.hpp

0001 # /* **************************************************************************
0002 #  *                                                                          *
0003 #  *     (C) Copyright Paul Mensonides 2002.
0004 #  *     Distributed under the Boost Software License, Version 1.0. (See
0005 #  *     accompanying file LICENSE_1_0.txt or copy at
0006 #  *     http://www.boost.org/LICENSE_1_0.txt)
0007 #  *                                                                          *
0008 #  ************************************************************************** */
0009 #
0010 # /* See http://www.boost.org for most recent version. */
0011 #
0012 # ifndef BOOST_PREPROCESSOR_DETAIL_CHECK_HPP
0013 # define BOOST_PREPROCESSOR_DETAIL_CHECK_HPP
0014 #
0015 # include <boost/preprocessor/cat.hpp>
0016 # include <boost/preprocessor/config/config.hpp>
0017 #
0018 # /* BOOST_PP_CHECK */
0019 #
0020 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
0021 #    define BOOST_PP_CHECK(x, type) BOOST_PP_CHECK_D(x, type)
0022 # else
0023 #    define BOOST_PP_CHECK(x, type) BOOST_PP_CHECK_OO((x, type))
0024 #    define BOOST_PP_CHECK_OO(par) BOOST_PP_CHECK_D ## par
0025 # endif
0026 #
0027 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC() && ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_DMC()
0028 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_1(BOOST_PP_CAT(BOOST_PP_CHECK_RESULT_, type x))
0029 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
0030 #    define BOOST_PP_CHECK_2(res, _) res
0031 # elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
0032 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_1(type x)
0033 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
0034 #    define BOOST_PP_CHECK_2(chk) BOOST_PP_CHECK_3((BOOST_PP_CHECK_RESULT_ ## chk))
0035 #    define BOOST_PP_CHECK_3(im) BOOST_PP_CHECK_5(BOOST_PP_CHECK_4 im)
0036 #    define BOOST_PP_CHECK_4(res, _) res
0037 #    define BOOST_PP_CHECK_5(res) res
0038 # else /* DMC */
0039 #    define BOOST_PP_CHECK_D(x, type) BOOST_PP_CHECK_OO((type x))
0040 #    define BOOST_PP_CHECK_OO(par) BOOST_PP_CHECK_0 ## par
0041 #    define BOOST_PP_CHECK_0(chk) BOOST_PP_CHECK_1(BOOST_PP_CAT(BOOST_PP_CHECK_RESULT_, chk))
0042 #    define BOOST_PP_CHECK_1(chk) BOOST_PP_CHECK_2(chk)
0043 #    define BOOST_PP_CHECK_2(res, _) res
0044 # endif
0045 #
0046 # define BOOST_PP_CHECK_RESULT_1 1, BOOST_PP_NIL
0047 #
0048 # endif