56 lines
1.7 KiB
Plaintext
56 lines
1.7 KiB
Plaintext
# /* **************************************************************************
|
|
# * *
|
|
# * (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_DETAIL_IS_EMPTY_HPP
|
|
#define BOOST_PREPROCESSOR_DETAIL_IS_EMPTY_HPP
|
|
|
|
#include <boost/preprocessor/punctuation/is_begin_parens.hpp>
|
|
|
|
#if BOOST_PP_VARIADICS_MSVC
|
|
|
|
# pragma warning(once:4002)
|
|
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_IIF_0(t, b) b
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_IIF_1(t, b) t
|
|
|
|
#else
|
|
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_IIF_0(t, ...) __VA_ARGS__
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_IIF_1(t, ...) t
|
|
|
|
#endif
|
|
|
|
#if BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400
|
|
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_PROCESS(param) \
|
|
BOOST_PP_IS_BEGIN_PARENS \
|
|
( \
|
|
BOOST_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C param () \
|
|
) \
|
|
/**/
|
|
|
|
#else
|
|
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_PROCESS(...) \
|
|
BOOST_PP_IS_BEGIN_PARENS \
|
|
( \
|
|
BOOST_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C __VA_ARGS__ () \
|
|
) \
|
|
/**/
|
|
|
|
#endif
|
|
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_PRIMITIVE_CAT(a, b) a ## b
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_IIF(bit) BOOST_PP_DETAIL_IS_EMPTY_PRIMITIVE_CAT(BOOST_PP_DETAIL_IS_EMPTY_IIF_,bit)
|
|
#define BOOST_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C(...) ()
|
|
|
|
#endif /* BOOST_PREPROCESSOR_DETAIL_IS_EMPTY_HPP */
|