Chris@102: # /* **************************************************************************
Chris@102: #  *                                                                          *
Chris@102: #  *     (C) Copyright Edward Diener 2014.
Chris@102: #  *     Distributed under the Boost Software License, Version 1.0. (See
Chris@102: #  *     accompanying file LICENSE_1_0.txt or copy at
Chris@102: #  *     http://www.boost.org/LICENSE_1_0.txt)
Chris@102: #  *                                                                          *
Chris@102: #  ************************************************************************** */
Chris@102: #
Chris@102: # /* See http://www.boost.org for most recent version. */
Chris@102: #
Chris@102: # ifndef BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_VARIADIC_HPP
Chris@102: # define BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_VARIADIC_HPP
Chris@102: #
Chris@102: # include <boost/preprocessor/config/config.hpp>
Chris@102: #
Chris@102: # if BOOST_PP_VARIADICS
Chris@102: #
Chris@102: # include <boost/preprocessor/punctuation/is_begin_parens.hpp>
Chris@102: # include <boost/preprocessor/facilities/detail/is_empty.hpp>
Chris@102: #
Chris@102: #if BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400
Chris@102: #
Chris@102: #define BOOST_PP_IS_EMPTY(param) \
Chris@102:     BOOST_PP_DETAIL_IS_EMPTY_IIF \
Chris@102:       ( \
Chris@102:       BOOST_PP_IS_BEGIN_PARENS \
Chris@102:         ( \
Chris@102:         param \
Chris@102:         ) \
Chris@102:       ) \
Chris@102:       ( \
Chris@102:       BOOST_PP_IS_EMPTY_ZERO, \
Chris@102:       BOOST_PP_DETAIL_IS_EMPTY_PROCESS \
Chris@102:       ) \
Chris@102:     (param) \
Chris@102: /**/
Chris@102: #define BOOST_PP_IS_EMPTY_ZERO(param) 0
Chris@102: # else
Chris@102: #define BOOST_PP_IS_EMPTY(...) \
Chris@102:     BOOST_PP_DETAIL_IS_EMPTY_IIF \
Chris@102:       ( \
Chris@102:       BOOST_PP_IS_BEGIN_PARENS \
Chris@102:         ( \
Chris@102:         __VA_ARGS__ \
Chris@102:         ) \
Chris@102:       ) \
Chris@102:       ( \
Chris@102:       BOOST_PP_IS_EMPTY_ZERO, \
Chris@102:       BOOST_PP_DETAIL_IS_EMPTY_PROCESS \
Chris@102:       ) \
Chris@102:     (__VA_ARGS__) \
Chris@102: /**/
Chris@102: #define BOOST_PP_IS_EMPTY_ZERO(...) 0
Chris@102: # endif /* BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400 */
Chris@102: # endif /* BOOST_PP_VARIADICS */
Chris@102: # endif /* BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_VARIADIC_HPP */