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100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/*=============================================================================
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Copyright (c) 2003 Joel de Guzman
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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/detail/lightweight_test.hpp>
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#include <boost/spirit/fusion/sequence/tuple.hpp>
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#include <boost/spirit/fusion/sequence/io.hpp>
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#include <boost/spirit/fusion/sequence/equal_to.hpp>
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#include <boost/spirit/fusion/sequence/get.hpp>
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#include <boost/spirit/fusion/sequence/make_tuple.hpp>
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#include <boost/spirit/fusion/algorithm/push_back.hpp>
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#include <boost/spirit/fusion/algorithm/for_each.hpp>
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#include <boost/mpl/vector_c.hpp>
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#include <string>
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struct plus_one
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{
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template <typename T>
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void operator()(T& v) const
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{
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v += 1;
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}
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};
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int
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main()
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{
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using namespace boost::fusion;
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std::cout << tuple_open('[');
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std::cout << tuple_close(']');
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std::cout << tuple_delimiter(", ");
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/// Testing push_back
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{
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char const* s = "Ruby";
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typedef tuple<int, char, double, char const*> tuple_type;
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tuple_type t1(1, 'x', 3.3, s);
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{
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std::cout << push_back(t1, 123456) << std::endl;
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BOOST_TEST((push_back(t1, 123456)
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== make_tuple(1, 'x', 3.3, s, 123456)));
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}
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{
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std::cout << push_back(t1, "funny") << std::endl;
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BOOST_TEST((push_back(t1, "funny")
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== make_tuple(1, 'x', 3.3, s, std::string("funny"))));
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}
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{
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std::cout << push_back(t1, t1) << std::endl;
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BOOST_TEST((push_back(t1, t1)
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== make_tuple(1, 'x', 3.3, s, t1)));
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}
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}
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{
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// This is OK -- can modify a tuple in place
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tuple<int,int,int> i(1,2,3);
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std::cout << i << '\n';
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for_each(i, plus_one());
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std::cout << i << '\n';
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// This should also be OK -- can modify a fusion sequence in place
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typedef tuple<> T1;
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typedef meta::push_back<T1, int>::type T2;
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typedef meta::push_back<T2, int>::type T3;
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typedef meta::push_back<T3, int>::type T4;
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T1 t1 = T1();
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T2 t2 = push_back(t1, 1);
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T3 t3 = push_back(t2, 2);
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T4 t4 = push_back(t3, 3);
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std::cout << "=============\n";
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std::cout << t4 << std::endl;
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for_each(t4, plus_one());
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std::cout << "=============\n";
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std::cout << t4 << std::endl;
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BOOST_TEST(t4 == make_tuple(2, 3, 4));
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}
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{
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typedef boost::mpl::vector_c<int, 1, 2, 3, 4, 5> mpl_vec;
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std::cout << boost::fusion::push_back(mpl_vec(), boost::mpl::int_<6>()) << std::endl;
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BOOST_TEST((boost::fusion::push_back(mpl_vec(), boost::mpl::int_<6>())
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== make_tuple(1, 2, 3, 4, 5, 6)));
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}
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return boost::report_errors();
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}
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