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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
- #if defined(_MSC_VER)
- #pragma warning( disable: 4804 ) // '>=': unsafe use of type 'bool' in operation
- #endif
- #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 {};
- struct X4 {};
- struct X5 {};
- int main()
- {
- using boost::mp11::mp_list;
- using boost::mp11::mp_replace_at;
- using boost::mp11::mp_int;
- using boost::mp11::mp_true;
- using boost::mp11::mp_false;
- {
- using L = mp_list<X1, X2, X3, X4, X5>;
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<0>, void>, mp_list<void, X2, X3, X4, X5>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<1>, void>, mp_list<X1, void, X3, X4, X5>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<2>, void>, mp_list<X1, X2, void, X4, X5>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<3>, void>, mp_list<X1, X2, X3, void, X5>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<4>, void>, mp_list<X1, X2, X3, X4, void>>));
- }
- {
- using L = std::tuple<X1, X2, X3, X4, X5>;
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<0>, void>, std::tuple<void, X2, X3, X4, X5>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<1>, void>, std::tuple<X1, void, X3, X4, X5>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<2>, void>, std::tuple<X1, X2, void, X4, X5>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<3>, void>, std::tuple<X1, X2, X3, void, X5>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<4>, void>, std::tuple<X1, X2, X3, X4, void>>));
- }
- {
- using L = std::pair<X1, X2>;
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_false, void>, std::pair<void, X2>>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_true, void>, std::pair<X1, void>>));
- }
- return boost::report_errors();
- }
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