compiler/boost/preprocessor/punctuation/detail/is_begin_parens.hpp

   1 # /* **************************************************************************
   2 #  *                                                                          *
   3 #  *     (C) Copyright Edward Diener 2014.
   4 #  *     Distributed under the Boost Software License, Version 1.0. (See
   5 #  *     accompanying file LICENSE_1_0.txt or copy at
   6 #  *     http://www.boost.org/LICENSE_1_0.txt)
   7 #  *                                                                          *
   8 #  ************************************************************************** */
   9 #
  10 # /* See http://www.boost.org for most recent version. */
  11 #
  12 #ifndef BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP
  13 #define BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP
  14
  15 #if BOOST_PP_VARIADICS_MSVC
  16
  17 #include <boost/preprocessor/facilities/empty.hpp>
  18
  19 #define BOOST_PP_DETAIL_VD_IBP_CAT(a, b) BOOST_PP_DETAIL_VD_IBP_CAT_I(a, b)
  20 #define BOOST_PP_DETAIL_VD_IBP_CAT_I(a, b) BOOST_PP_DETAIL_VD_IBP_CAT_II(a ## b)
  21 #define BOOST_PP_DETAIL_VD_IBP_CAT_II(res) res
  22
  23 #define BOOST_PP_DETAIL_IBP_SPLIT(i, ...) \
  24     BOOST_PP_DETAIL_VD_IBP_CAT(BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(BOOST_PP_DETAIL_IBP_SPLIT_,i)(__VA_ARGS__),BOOST_PP_EMPTY()) \
  25 /**/
  26
  27 #define BOOST_PP_DETAIL_IBP_IS_VARIADIC_C(...) 1 1
  28
  29 #else
  30
  31 #define BOOST_PP_DETAIL_IBP_SPLIT(i, ...) \
  32     BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(BOOST_PP_DETAIL_IBP_SPLIT_,i)(__VA_ARGS__) \
  33 /**/
  34
  35 #define BOOST_PP_DETAIL_IBP_IS_VARIADIC_C(...) 1
  36
  37 #endif /* BOOST_PP_VARIADICS_MSVC */
  38
  39 #define BOOST_PP_DETAIL_IBP_SPLIT_0(a, ...) a
  40 #define BOOST_PP_DETAIL_IBP_SPLIT_1(a, ...) __VA_ARGS__
  41
  42 #define BOOST_PP_DETAIL_IBP_CAT(a, ...) BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(a,__VA_ARGS__)
  43 #define BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(a, ...) a ## __VA_ARGS__
  44
  45 #define BOOST_PP_DETAIL_IBP_IS_VARIADIC_R_1 1,
  46 #define BOOST_PP_DETAIL_IBP_IS_VARIADIC_R_BOOST_PP_DETAIL_IBP_IS_VARIADIC_C 0,
  47
  48 #endif /* BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP */