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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: 4244 ) // 'initializing': conversion from 'int' to 'char', possible loss of data
- #endif
- #include <boost/mp11/tuple.hpp>
- #include <boost/mp11/detail/config.hpp>
- #include <boost/core/lightweight_test.hpp>
- #include <tuple>
- #include <memory>
- #include <utility>
- #include <array>
- struct T1
- {
- int x, y, z;
- T1( int x = 0, int y = 0, int z = 0 ): x(x), y(y), z(z) {}
- };
- struct T2
- {
- std::unique_ptr<int> x, y, z;
- T2( std::unique_ptr<int> x, std::unique_ptr<int> y, std::unique_ptr<int> z ): x(std::move(x)), y(std::move(y)), z(std::move(z)) {}
- #if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, <= 1800 )
- T2( T2&& r ): x( std::move(r.x) ), y( std::move(r.y) ), z( std::move(r.z) ) {}
- #endif
- };
- int main()
- {
- using boost::mp11::construct_from_tuple;
- {
- std::tuple<int, short, char> tp{ 1, 2, 3 };
- {
- T1 t1 = construct_from_tuple<T1>( tp );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 3 );
- }
- {
- T1 t1 = construct_from_tuple<T1>( std::move(tp) );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 3 );
- }
- }
- {
- std::tuple<int, short, char> const tp{ 1, 2, 3 };
- {
- T1 t1 = construct_from_tuple<T1>( tp );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 3 );
- }
- {
- T1 t1 = construct_from_tuple<T1>( std::move(tp) );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 3 );
- }
- }
- #if defined( __clang_major__ ) && __clang_major__ == 3 && __clang_minor__ < 8
- #else
- {
- std::tuple<std::unique_ptr<int>, std::unique_ptr<int>, std::unique_ptr<int>> tp{ std::unique_ptr<int>(new int(1)), std::unique_ptr<int>(new int(2)), std::unique_ptr<int>(new int(3)) };
- T2 t2 = construct_from_tuple<T2>( std::move(tp) );
- BOOST_TEST_EQ( *t2.x, 1 );
- BOOST_TEST_EQ( *t2.y, 2 );
- BOOST_TEST_EQ( *t2.z, 3 );
- }
- #endif
- {
- std::pair<int, short> tp{ 1, 2 };
- {
- T1 t1 = construct_from_tuple<T1>( tp );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 0 );
- }
- {
- T1 t1 = construct_from_tuple<T1>( std::move(tp) );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 0 );
- }
- }
- {
- std::pair<int, short> const tp{ 1, 2 };
- {
- T1 t1 = construct_from_tuple<T1>( tp );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 0 );
- }
- {
- T1 t1 = construct_from_tuple<T1>( std::move(tp) );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 0 );
- }
- }
- {
- std::array<int, 3> tp{{ 1, 2, 3 }};
- {
- T1 t1 = construct_from_tuple<T1>( tp );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 3 );
- }
- {
- T1 t1 = construct_from_tuple<T1>( std::move(tp) );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 3 );
- }
- }
- {
- std::array<int, 3> const tp{{ 1, 2, 3 }};
- {
- T1 t1 = construct_from_tuple<T1>( tp );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 3 );
- }
- {
- T1 t1 = construct_from_tuple<T1>( std::move(tp) );
- BOOST_TEST_EQ( t1.x, 1 );
- BOOST_TEST_EQ( t1.y, 2 );
- BOOST_TEST_EQ( t1.z, 3 );
- }
- }
- {
- std::tuple<> tp;
- {
- T1 t1 = construct_from_tuple<T1>( tp );
- BOOST_TEST_EQ( t1.x, 0 );
- BOOST_TEST_EQ( t1.y, 0 );
- BOOST_TEST_EQ( t1.z, 0 );
- }
- {
- T1 t1 = construct_from_tuple<T1>( std::move(tp) );
- BOOST_TEST_EQ( t1.x, 0 );
- BOOST_TEST_EQ( t1.y, 0 );
- BOOST_TEST_EQ( t1.z, 0 );
- }
- }
- {
- std::array<int, 0> tp;
- {
- T1 t1 = construct_from_tuple<T1>( tp );
- BOOST_TEST_EQ( t1.x, 0 );
- BOOST_TEST_EQ( t1.y, 0 );
- BOOST_TEST_EQ( t1.z, 0 );
- }
- {
- T1 t1 = construct_from_tuple<T1>( std::move(tp) );
- BOOST_TEST_EQ( t1.x, 0 );
- BOOST_TEST_EQ( t1.y, 0 );
- BOOST_TEST_EQ( t1.z, 0 );
- }
- }
- return boost::report_errors();
- }
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