punctuation/detail/is_begin_parens.hpp

0001 # /* **************************************************************************
0002 #  *                                                                          *
0003 #  *     (C) Copyright Edward Diener 2014.
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 ">#
0011 # /* See http://www.boost.org for most recent version. */
0012 0013 ">#
0014 #ifndef BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP
0015 #define BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP
0016
0017 #if BOOST_PP_VARIADICS_MSVC
0018
0019 #include <boost/preprocessor/facilities/empty.hpp>
0020
0021 #define BOOST_PP_DETAIL_VD_IBP_CAT(a, b) BOOST_PP_DETAIL_VD_IBP_CAT_I(a, b)
0022 #define BOOST_PP_DETAIL_VD_IBP_CAT_I(a, b) BOOST_PP_DETAIL_VD_IBP_CAT_II(a ## b)
0023 #define BOOST_PP_DETAIL_VD_IBP_CAT_II(res) res
0024
0025 #define BOOST_PP_DETAIL_IBP_SPLIT(i, ...) \
0026     BOOST_PP_DETAIL_VD_IBP_CAT(BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(BOOST_PP_DETAIL_IBP_SPLIT_,i)(__VA_ARGS__),BOOST_PP_EMPTY()) \
0027 /**/
0028
0029 #define BOOST_PP_DETAIL_IBP_IS_VARIADIC_C(...) 1 1
0030
0031 #else
0032
0033 #define BOOST_PP_DETAIL_IBP_SPLIT(i, ...) \
0034     BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(BOOST_PP_DETAIL_IBP_SPLIT_,i)(__VA_ARGS__) \
0035 /**/
0036
0037 #define BOOST_PP_DETAIL_IBP_IS_VARIADIC_C(...) 1
0038
0039 #endif /* BOOST_PP_VARIADICS_MSVC */
0040
0041 #define BOOST_PP_DETAIL_IBP_SPLIT_0(a, ...) a
0042 #define BOOST_PP_DETAIL_IBP_SPLIT_1(a, ...) __VA_ARGS__
0043
0044 #define BOOST_PP_DETAIL_IBP_CAT(a, ...) BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(a,__VA_ARGS__)
0045 #define BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(a, ...) a ## __VA_ARGS__
0046
0047 #define BOOST_PP_DETAIL_IBP_IS_VARIADIC_R_1 1,
0048 #define BOOST_PP_DETAIL_IBP_IS_VARIADIC_R_BOOST_PP_DETAIL_IBP_IS_VARIADIC_C 0,
0049
0050 #endif /* BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP */