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43 lines
2.1 KiB
43 lines
2.1 KiB
# /* ************************************************************************** |
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# * * |
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# * (C) Copyright Paul Mensonides 2003. |
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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_HPP |
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# define BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_HPP |
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# |
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# include <boost/preprocessor/config/config.hpp> |
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# include <boost/preprocessor/cat.hpp> |
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# include <boost/preprocessor/tuple/elem.hpp> |
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# include <boost/preprocessor/facilities/empty.hpp> |
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# include <boost/preprocessor/detail/split.hpp> |
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# |
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# /* BOOST_PP_IS_EMPTY */ |
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# |
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# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC() && ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC() |
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# define BOOST_PP_IS_EMPTY(x) BOOST_PP_IS_EMPTY_I(x BOOST_PP_IS_EMPTY_HELPER) |
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# define BOOST_PP_IS_EMPTY_I(contents) BOOST_PP_TUPLE_ELEM(2, 1, (BOOST_PP_IS_EMPTY_DEF_ ## contents())) |
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# define BOOST_PP_IS_EMPTY_DEF_BOOST_PP_IS_EMPTY_HELPER 1, 1 BOOST_PP_EMPTY |
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# define BOOST_PP_IS_EMPTY_HELPER() , 0 |
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# else |
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# if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC() |
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# define BOOST_PP_IS_EMPTY(x) BOOST_PP_IS_EMPTY_I(BOOST_PP_IS_EMPTY_HELPER x ()) |
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# define BOOST_PP_IS_EMPTY_I(test) BOOST_PP_IS_EMPTY_II(BOOST_PP_SPLIT(0, BOOST_PP_CAT(BOOST_PP_IS_EMPTY_DEF_, test))) |
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# define BOOST_PP_IS_EMPTY_II(id) id |
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# else |
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# define BOOST_PP_IS_EMPTY(x) BOOST_PP_IS_EMPTY_I((BOOST_PP_IS_EMPTY_HELPER x ())) |
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# define BOOST_PP_IS_EMPTY_I(par) BOOST_PP_IS_EMPTY_II ## par |
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# define BOOST_PP_IS_EMPTY_II(test) BOOST_PP_SPLIT(0, BOOST_PP_CAT(BOOST_PP_IS_EMPTY_DEF_, test)) |
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# endif |
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# define BOOST_PP_IS_EMPTY_HELPER() 1 |
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# define BOOST_PP_IS_EMPTY_DEF_1 1, BOOST_PP_NIL |
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# define BOOST_PP_IS_EMPTY_DEF_BOOST_PP_IS_EMPTY_HELPER 0, BOOST_PP_NIL |
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# endif |
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# |
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# endif
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