62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
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// (C) Copyright Edward Diener 2011-2015
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See 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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#if !defined(BOOST_VMD_DETAIL_IS_EMPTY_HPP)
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#define BOOST_VMD_DETAIL_IS_EMPTY_HPP
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#include <boost/preprocessor/punctuation/is_begin_parens.hpp>
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#if BOOST_VMD_MSVC
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# pragma warning(once:4002)
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#define BOOST_VMD_DETAIL_IS_EMPTY_IIF_0(t, b) b
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#define BOOST_VMD_DETAIL_IS_EMPTY_IIF_1(t, b) t
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#if BOOST_VMD_MSVC_V8
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#define BOOST_VMD_DETAIL_IS_EMPTY_PROCESS(param) \
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BOOST_PP_IS_BEGIN_PARENS \
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( \
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BOOST_VMD_DETAIL_IS_EMPTY_NON_FUNCTION_C param () \
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) \
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/**/
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#else
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#define BOOST_VMD_DETAIL_IS_EMPTY_PROCESS(...) \
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BOOST_PP_IS_BEGIN_PARENS \
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( \
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BOOST_VMD_DETAIL_IS_EMPTY_NON_FUNCTION_C __VA_ARGS__ () \
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) \
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/**/
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#endif
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#else
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#define BOOST_VMD_DETAIL_IS_EMPTY_IIF_0(t, ...) __VA_ARGS__
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#define BOOST_VMD_DETAIL_IS_EMPTY_IIF_1(t, ...) t
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#define BOOST_VMD_DETAIL_IS_EMPTY_PROCESS(...) \
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BOOST_PP_IS_BEGIN_PARENS \
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( \
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BOOST_VMD_DETAIL_IS_EMPTY_NON_FUNCTION_C __VA_ARGS__ () \
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) \
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/**/
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#endif /* BOOST_VMD_MSVC */
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#define BOOST_VMD_DETAIL_IS_EMPTY_PRIMITIVE_CAT(a, b) a ## b
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#define BOOST_VMD_DETAIL_IS_EMPTY_IIF(bit) \
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BOOST_VMD_DETAIL_IS_EMPTY_PRIMITIVE_CAT(BOOST_VMD_DETAIL_IS_EMPTY_IIF_,bit) \
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/**/
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#define BOOST_VMD_DETAIL_IS_EMPTY_NON_FUNCTION_C(...) ()
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#define BOOST_VMD_DETAIL_IS_EMPTY_GEN_ZERO(...) 0
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#endif /* BOOST_VMD_DETAIL_IS_EMPTY_HPP */
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