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