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- // Copyright 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/variant2/variant.hpp>
- #include <boost/core/lightweight_test.hpp>
- #include <boost/core/lightweight_test_trait.hpp>
- #include <type_traits>
- #include <utility>
- #include <string>
- using namespace boost::variant2;
- int main()
- {
- {
- variant<int> v;
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int*>));
- }
- {
- variant<int> const v;
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
- }
- {
- variant<int const> v;
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
- }
- {
- variant<int volatile> const v;
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const volatile&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const volatile&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const volatile*>));
- }
- {
- variant<int> v;
- BOOST_TEST_EQ( get<0>(v), 0 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
- }
- {
- variant<int> const v;
- BOOST_TEST_EQ( get<0>(v), 0 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
- }
- {
- variant<int> v( 1 );
- BOOST_TEST_EQ( get<0>(v), 1 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
- }
- {
- variant<int> const v( 1 );
- BOOST_TEST_EQ( get<0>(v), 1 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
- }
- {
- variant<int, float> v;
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int*>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(v)), float&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(std::move(v))), float&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<1>(&v)), float*>));
- }
- {
- variant<int, float> const v;
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(v)), float const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(std::move(v))), float const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<1>(&v)), float const*>));
- }
- {
- variant<int const, float volatile> v;
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(v)), float volatile&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(std::move(v))), float volatile&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<1>(&v)), float volatile*>));
- }
- {
- variant<int const, float volatile> const v;
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(v)), int const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<0>(std::move(v))), int const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<0>(&v)), int const*>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(v)), float const volatile&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get<1>(std::move(v))), float const volatile&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<decltype(get_if<1>(&v)), float const volatile*>));
- }
- {
- variant<int, float> v;
- BOOST_TEST_EQ( get<0>(v), 0 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
- }
- {
- variant<int, float> const v;
- BOOST_TEST_EQ( get<0>(v), 0 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
- }
- {
- variant<int, float> v( 1 );
- BOOST_TEST_EQ( get<0>(v), 1 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
- }
- {
- variant<int, float> const v( 1 );
- BOOST_TEST_EQ( get<0>(v), 1 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
- }
- {
- variant<int, float> v( 3.14f );
- BOOST_TEST_THROWS( get<0>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<0>(&v), nullptr );
- BOOST_TEST_EQ( get<1>(v), 3.14f );
- BOOST_TEST_EQ( get_if<1>(&v), &get<1>(v) );
- BOOST_TEST_EQ( get<1>(std::move(v)), 3.14f );
- }
- {
- variant<int, float> const v( 3.14f );
- BOOST_TEST_THROWS( get<0>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<0>(&v), nullptr );
- BOOST_TEST_EQ( get<1>(v), 3.14f );
- BOOST_TEST_EQ( get_if<1>(&v), &get<1>(v) );
- BOOST_TEST_EQ( get<1>(std::move(v)), 3.14f );
- }
- {
- variant<int, float, float> v;
- BOOST_TEST_EQ( get<0>(v), 0 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_THROWS( get<2>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<2>(&v), nullptr );
- BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
- }
- {
- variant<int, float, float> const v;
- BOOST_TEST_EQ( get<0>(v), 0 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_THROWS( get<2>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<2>(&v), nullptr );
- BOOST_TEST_EQ( get<0>(std::move(v)), 0 );
- }
- {
- variant<int, float, float> v( 1 );
- BOOST_TEST_EQ( get<0>(v), 1 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_THROWS( get<2>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<2>(&v), nullptr );
- BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
- }
- {
- variant<int, float, float> const v( 1 );
- BOOST_TEST_EQ( get<0>(v), 1 );
- BOOST_TEST_EQ( get_if<0>(&v), &get<0>(v) );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_THROWS( get<2>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<2>(&v), nullptr );
- BOOST_TEST_EQ( get<0>(std::move(v)), 1 );
- }
- {
- variant<int, int, float> v( 3.14f );
- BOOST_TEST_THROWS( get<0>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<0>(&v), nullptr );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_EQ( get<2>(v), 3.14f );
- BOOST_TEST_EQ( get_if<2>(&v), &get<2>(v) );
- BOOST_TEST_EQ( get<2>(std::move(v)), 3.14f );
- }
- {
- variant<int, int, float> const v( 3.14f );
- BOOST_TEST_THROWS( get<0>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<0>(&v), nullptr );
- BOOST_TEST_THROWS( get<1>(v), bad_variant_access );
- BOOST_TEST_EQ( get_if<1>(&v), nullptr );
- BOOST_TEST_EQ( get<2>(v), 3.14f );
- BOOST_TEST_EQ( get_if<2>(&v), &get<2>(v) );
- BOOST_TEST_EQ( get<2>(std::move(v)), 3.14f );
- }
- {
- variant<int> * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int const> * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int> const * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int const> const * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int, float> * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int, float> const * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int const, float volatile> * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int const, float volatile> const * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int, int, float, float> * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- {
- variant<int, int, float, float> const * p = 0;
- BOOST_TEST_EQ( get_if<0>(p), nullptr );
- }
- return boost::report_errors();
- }
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