boost/preprocessor/facilities/check_empty.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_FACILITIES_CHECK_EMPTY_HPP
  13 # define BOOST_PREPROCESSOR_FACILITIES_CHECK_EMPTY_HPP
  14 # include <boost/preprocessor/variadic/has_opt.hpp>
  15 # if BOOST_PP_VARIADIC_HAS_OPT()
  16 # include <boost/preprocessor/facilities/is_empty_variadic.hpp>
  17 # define BOOST_PP_CHECK_EMPTY(...) BOOST_PP_IS_EMPTY_OPT(__VA_ARGS__)
  18 # endif /* BOOST_PP_VARIADIC_HAS_OPT() */
  19 # endif /* BOOST_PREPROCESSOR_FACILITIES_CHECK_EMPTY_HPP */