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47 lines
1.8 KiB
C++
47 lines
1.8 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2006 Joel de Guzman
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Copyright (c) 2005-2006 Dan Marsden
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Use, modification and distribution is subject to the Boost Software
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License, 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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==============================================================================*/
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#include <boost/fusion/sequence/adapted/variant.hpp>
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#include <boost/fusion/sequence/intrinsic/size.hpp>
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#include <boost/fusion/sequence/intrinsic/begin.hpp>
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#include <boost/fusion/sequence/intrinsic/end.hpp>
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#include <boost/fusion/iterator/next.hpp>
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#include <boost/fusion/iterator/prior.hpp>
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#include <boost/fusion/iterator/deref.hpp>
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#include <boost/fusion/iterator/distance.hpp>
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#include <boost/fusion/iterator/value_of.hpp>
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#include <boost/detail/lightweight_test.hpp>
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#include <boost/variant.hpp>
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#include <boost/mpl/assert.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <string>
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int main()
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{
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namespace fusion = boost::fusion;
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typedef boost::variant<double, std::string> var_type;
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var_type var = "hello";
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BOOST_TEST(fusion::size(var) == 2);
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BOOST_TEST(fusion::distance(fusion::begin(var), fusion::end(var)) == 2);
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BOOST_TEST(*fusion::next(fusion::begin(var)) == "hello");
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BOOST_TEST(fusion::next(fusion::next(fusion::begin(var))) == fusion::end(var));
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BOOST_MPL_ASSERT((boost::is_same<
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fusion::result_of::value_of<fusion::result_of::begin<var_type>::type>::type,
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double>));
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BOOST_MPL_ASSERT((boost::is_same<
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fusion::result_of::value_of<fusion::result_of::next<fusion::result_of::begin<var_type>::type>::type>::type,
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std::string>));
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return boost::report_errors();
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}
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