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