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- // Copyright 2015, 2017 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/mp11/utility.hpp>
- #include <boost/core/lightweight_test_trait.hpp>
- #include <type_traits>
- #include <tuple>
- struct X1 {};
- struct X2 {};
- struct X3 {};
- struct X4 {};
- template<class T1, class T2> struct F {};
- int main()
- {
- using boost::mp11::mp_list;
- using boost::mp11::mp_fold_q;
- using boost::mp11::mp_quote;
- using Q = mp_quote<F>;
- {
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<mp_list<>, void, Q>, void>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<mp_list<X1>, void, Q>, F<void, X1>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<mp_list<X1, X2>, void, Q>, F<F<void, X1>, X2>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<mp_list<X1, X2, X3>, void, Q>, F<F<F<void, X1>, X2>, X3>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<mp_list<X1, X2, X3, X4>, void, Q>, F<F<F<F<void, X1>, X2>, X3>, X4>>));
- }
- {
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<std::tuple<>, void, Q>, void>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<std::tuple<X1>, void, Q>, F<void, X1>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<std::tuple<X1, X2>, void, Q>, F<F<void, X1>, X2>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<std::tuple<X1, X2, X3>, void, Q>, F<F<F<void, X1>, X2>, X3>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<std::tuple<X1, X2, X3, X4>, void, Q>, F<F<F<F<void, X1>, X2>, X3>, X4>>));
- }
- using boost::mp11::mp_push_back;
- {
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<std::tuple<X1, X2, X3, X4>, mp_list<>, mp_quote<mp_push_back>>, mp_list<X1, X2, X3, X4>>));
- }
- using boost::mp11::mp_push_front;
- {
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_fold_q<std::tuple<X1, X2, X3, X4>, mp_list<>, mp_quote<mp_push_front>>, mp_list<X4, X3, X2, X1>>));
- }
- return boost::report_errors();
- }
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