compiler/boost/preprocessor/detail/is_nullary.hpp

   1 # /* **************************************************************************
   2 #  *                                                                          *
   3 #  *     (C) Copyright Paul Mensonides 2002.
   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_NULLARY_HPP
  13 # define BOOST_PREPROCESSOR_DETAIL_IS_NULLARY_HPP
  14 #
  15 # include <boost/preprocessor/config/config.hpp>
  16 # include <boost/preprocessor/detail/check.hpp>
  17 #
  18 # /* BOOST_PP_IS_NULLARY */
  19 #
  20 # if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
  21 #    define BOOST_PP_IS_NULLARY(x) BOOST_PP_CHECK(x, BOOST_PP_IS_NULLARY_CHECK)
  22 # else
  23 #    define BOOST_PP_IS_NULLARY(x) BOOST_PP_IS_NULLARY_I(x)
  24 #    define BOOST_PP_IS_NULLARY_I(x) BOOST_PP_CHECK(x, BOOST_PP_IS_NULLARY_CHECK)
  25 # endif
  26 #
  27 # define BOOST_PP_IS_NULLARY_CHECK() 1
  28 # define BOOST_PP_CHECK_RESULT_BOOST_PP_IS_NULLARY_CHECK 0, BOOST_PP_NIL
  29 #
  30 # endif