boost/preprocessor/variadic/detail/is_single_return.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_VARIADIC_DETAIL_IS_SINGLE_RETURN_HPP
  13 # define BOOST_PREPROCESSOR_VARIADIC_DETAIL_IS_SINGLE_RETURN_HPP
  14 #
  15 # include <boost/preprocessor/config/config.hpp>
  16 #
  17 # /* BOOST_PP_VARIADIC_IS_SINGLE_RETURN */
  18 #
  19 # if BOOST_PP_VARIADICS && BOOST_PP_VARIADICS_MSVC
  20 # include <boost/preprocessor/control/iif.hpp>
  21 # include <boost/preprocessor/facilities/is_1.hpp>
  22 # include <boost/preprocessor/variadic/size.hpp>
  23 # define BOOST_PP_VARIADIC_IS_SINGLE_RETURN(sr,nsr,...) \
  24         BOOST_PP_IIF(BOOST_PP_IS_1(BOOST_PP_VARIADIC_SIZE(__VA_ARGS__)),sr,nsr) \
  25         /**/
  26 # endif /* BOOST_PP_VARIADICS && BOOST_PP_VARIADICS_MSVC */
  27 #
  28 # endif /* BOOST_PREPROCESSOR_VARIADIC_DETAIL_IS_SINGLE_RETURN_HPP */