boost/preprocessor/variadic/has_opt.hpp

   1 # /* **************************************************************************
   2 #  *                                                                          *
   3 #  *     (C) Copyright Edward Diener 2019.                                    *
   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_VARIADIC_HAS_OPT_HPP
  13 # define BOOST_PREPROCESSOR_VARIADIC_HAS_OPT_HPP
  14 #
  15 # include <boost/preprocessor/config/config.hpp>
  16 #
  17 # /* BOOST_PP_VARIADIC_HAS_OPT */
  18 #
  19 # if BOOST_PP_VARIADICS && defined(__cplusplus) && __cplusplus > 201703L
  20 # include <boost/preprocessor/variadic/detail/has_opt.hpp>
  21 # define BOOST_PP_VARIADIC_HAS_OPT() \
  22   BOOST_PP_VARIADIC_HAS_OPT_ELEM2(BOOST_PP_VARIADIC_HAS_OPT_FUNCTION(?),) \
  23 /**/
  24 # else
  25 # define BOOST_PP_VARIADIC_HAS_OPT() 0
  26 # endif
  27 #
  28 # endif