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- // Copyright 2015 Peter Dimov.
- //
- // Distributed under the Boost Software License, Version 1.0.
- //
- // See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt
- #include <boost/mp11/algorithm.hpp>
- #include <boost/mp11/list.hpp>
- #include <boost/mp11/integral.hpp>
- #include <boost/core/lightweight_test_trait.hpp>
- #include <type_traits>
- #include <tuple>
- #include <utility>
- struct X1 {};
- struct X2 {};
- struct X3 {};
- int main()
- {
- using boost::mp11::mp_list;
- using boost::mp11::mp_contains;
- using boost::mp11::mp_true;
- using boost::mp11::mp_false;
- {
- using L1 = mp_list<>;
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L1, void>, mp_false>));
- using L2 = mp_list<X1, X2, X3, X2, X3, X3>;
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, void>, mp_false>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X1>, mp_true>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X2>, mp_true>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X3>, mp_true>));
- }
- {
- using L3 = std::tuple<>;
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L3, void>, mp_false>));
- using L4 = std::tuple<X1, X2, X3, X2, X3, X3>;
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, void>, mp_false>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X1>, mp_true>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X2>, mp_true>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X3>, mp_true>));
- }
- {
- using L5 = std::pair<X1, X2>;
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, void>, mp_false>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, X1>, mp_true>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, X2>, mp_true>));
- }
- return boost::report_errors();
- }
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