mirror of https://gitee.com/bigwinds/arangodb
73 lines
2.0 KiB
C++
73 lines
2.0 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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#include <boost/vmd/is_empty.hpp>
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#include <boost/preprocessor/facilities/empty.hpp>
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#include <boost/detail/lightweight_test.hpp>
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int main()
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{
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#if BOOST_PP_VARIADICS
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#define DATA
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#define OBJECT OBJECT2
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#define OBJECT2
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#define FUNC(x) FUNC2(x)
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#define FUNC2(x)
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BOOST_TEST(BOOST_VMD_IS_EMPTY(BOOST_PP_EMPTY()));
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BOOST_TEST(BOOST_VMD_IS_EMPTY(DATA BOOST_PP_EMPTY()));
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(x BOOST_PP_EMPTY()));
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BOOST_TEST(BOOST_VMD_IS_EMPTY(OBJECT BOOST_PP_EMPTY()));
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BOOST_TEST(BOOST_VMD_IS_EMPTY(FUNC(z) BOOST_PP_EMPTY()));
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#define FUNC_GEN() ()
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#define FUNC_GEN2(x) ()
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#define FUNC_GEN3() anything
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#define FUNC_GEN4(x) anything
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#if BOOST_VMD_MSVC
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#define FUNC_GEN5(x,y) ()
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#define FUNC_GEN6(x,y) anything
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/* This shows that VC++ does not work correctly in these cases. */
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BOOST_TEST(BOOST_VMD_IS_EMPTY(FUNC_GEN)); /* This produces the wrong result */
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BOOST_TEST(BOOST_VMD_IS_EMPTY(FUNC_GEN2)); /* This produces the wrong result */
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BOOST_TEST(BOOST_VMD_IS_EMPTY(FUNC_GEN5)); /* This should produce a compiler error but does not and produces the incorrect result */
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN6)); /* This should produce a compiler error but does not */
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#else
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#define FUNC_GEN5() (&)
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#define FUNC_GEN6(x) (y)
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#define FUNC_GEN7() (y,z)
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN));
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN2));
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN5));
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN6));
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN7));
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#endif /* BOOST_VMD_MSVC */
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN3));
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BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN4));
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#else
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BOOST_ERROR("No variadic macro support");
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#endif /* BOOST_PP_VARIADICS */
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return boost::report_errors();
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}
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