123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154 |
- // 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/mp11.hpp>
- #include <boost/core/lightweight_test.hpp>
- #include <boost/core/lightweight_test_trait.hpp>
- #include <type_traits>
- #include <cstddef>
- using namespace boost::variant2;
- using namespace boost::mp11;
- template<class I, class T> using var_alt_t = variant_alternative_t<I::value, T>;
- int main()
- {
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void>>, void>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void> const>, void const>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void> volatile>, void volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void> const volatile>, void const volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char>&>, char&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char> const&>, char const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char>&&>, char&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char> const&&>, char const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int>>, void>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int> const>, void const>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int> volatile>, void volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int> const volatile>, void const volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int>&>, char&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int> const&>, char const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int>&&>, char&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int> const&&>, char const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int>>, int>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> const>, int const>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> volatile>, int volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> const volatile>, int const volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int>&>, int&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> const&>, int const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int>&&>, int&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int> const&&>, int const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int, float>>, void>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int, float> const>, void const>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int, float> volatile>, void volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<void, int, float> const volatile>, void const volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int, float>&>, char&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int, float> const&>, char const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int, float>&&>, char&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<0, variant<char, int, float> const&&>, char const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float>>, int>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> const>, int const>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> volatile>, int volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> const volatile>, int const volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float>&>, int&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> const&>, int const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float>&&>, int&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<1, variant<void, int, float> const&&>, int const&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float>>, float>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> const>, float const>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> volatile>, float volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> const volatile>, float const volatile>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float>&>, float&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> const&>, float const&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float>&&>, float&&>));
- BOOST_TEST_TRAIT_TRUE((std::is_same<variant_alternative_t<2, variant<void, int, float> const&&>, float const&&>));
- variant_alternative<0, void>();
- variant_alternative<0, void const>();
- variant_alternative<0, void volatile>();
- variant_alternative<0, void const volatile>();
- variant_alternative<0, int&>();
- variant_alternative<0, int const&>();
- variant_alternative<0, int&&>();
- variant_alternative<0, int const&&>();
- variant_alternative<0, variant<>>();
- variant_alternative<0, variant<> const>();
- variant_alternative<0, variant<> volatile>();
- variant_alternative<0, variant<> const volatile>();
- variant_alternative<0, variant<>&>();
- variant_alternative<0, variant<> const&>();
- variant_alternative<0, variant<>&&>();
- variant_alternative<0, variant<> const&&>();
- variant_alternative<1, variant<int>>();
- variant_alternative<1, variant<int> const>();
- variant_alternative<1, variant<int> volatile>();
- variant_alternative<1, variant<int> const volatile>();
- variant_alternative<1, variant<int>&>();
- variant_alternative<1, variant<int> const&>();
- variant_alternative<1, variant<int>&&>();
- variant_alternative<1, variant<int> const&&>();
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, void>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, void const>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, void volatile>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, void const volatile>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, int&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, int const&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, int&&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, int const&&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<>>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> const>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> volatile>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> const volatile>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<>&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> const&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<>&&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<0>, variant<> const&&>));
- BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int>>));
- BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> const>));
- BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> volatile>));
- BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> const volatile>));
- BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int>&>));
- BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> const&>));
- BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int>&&>));
- BOOST_TEST_TRAIT_TRUE((mp_valid<var_alt_t, mp_size_t<0>, variant<int> const&&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int>>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> const>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> volatile>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> const volatile>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int>&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> const&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int>&&>));
- BOOST_TEST_TRAIT_FALSE((mp_valid<var_alt_t, mp_size_t<1>, variant<int> const&&>));
- return boost::report_errors();
- }
|