Eric Fiselier | 199bee0 | 2015-12-18 00:36:55 +0000 | [diff] [blame] | 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | // <tuple> |
| 11 | |
| 12 | // template <class... Types> class tuple; |
| 13 | |
| 14 | // template <size_t I, class... Types> |
| 15 | // const typename tuple_element<I, tuple<Types...> >::type&& |
| 16 | // get(const tuple<Types...>&& t); |
| 17 | |
| 18 | // UNSUPPORTED: c++98, c++03 |
| 19 | |
| 20 | #include <tuple> |
| 21 | #include <utility> |
| 22 | #include <string> |
| 23 | #include <type_traits> |
| 24 | #include <cassert> |
| 25 | |
| 26 | #include "test_macros.h" |
| 27 | |
| 28 | int main() |
| 29 | { |
| 30 | { |
| 31 | typedef std::tuple<int> T; |
| 32 | const T t(3); |
| 33 | static_assert(std::is_same<const int&&, decltype(std::get<0>(std::move(t)))>::value, ""); |
| 34 | static_assert(noexcept(std::get<0>(std::move(t))), ""); |
| 35 | const int&& i = std::get<0>(std::move(t)); |
| 36 | assert(i == 3); |
| 37 | } |
| 38 | |
| 39 | { |
| 40 | typedef std::tuple<std::string, int> T; |
| 41 | const T t("high", 5); |
| 42 | static_assert(std::is_same<const std::string&&, decltype(std::get<0>(std::move(t)))>::value, ""); |
| 43 | static_assert(noexcept(std::get<0>(std::move(t))), ""); |
| 44 | static_assert(std::is_same<const int&&, decltype(std::get<1>(std::move(t)))>::value, ""); |
| 45 | static_assert(noexcept(std::get<1>(std::move(t))), ""); |
| 46 | const std::string&& s = std::get<0>(std::move(t)); |
| 47 | const int&& i = std::get<1>(std::move(t)); |
| 48 | assert(s == "high"); |
| 49 | assert(i == 5); |
| 50 | } |
| 51 | |
| 52 | { |
| 53 | int x = 42; |
| 54 | int const y = 43; |
| 55 | std::tuple<int&, int const&> const p(x, y); |
| 56 | static_assert(std::is_same<int&, decltype(std::get<0>(std::move(p)))>::value, ""); |
| 57 | static_assert(noexcept(std::get<0>(std::move(p))), ""); |
| 58 | static_assert(std::is_same<int const&, decltype(std::get<1>(std::move(p)))>::value, ""); |
| 59 | static_assert(noexcept(std::get<1>(std::move(p))), ""); |
| 60 | } |
| 61 | |
| 62 | { |
| 63 | int x = 42; |
| 64 | int const y = 43; |
| 65 | std::tuple<int&&, int const&&> const p(std::move(x), std::move(y)); |
| 66 | static_assert(std::is_same<int&&, decltype(std::get<0>(std::move(p)))>::value, ""); |
| 67 | static_assert(noexcept(std::get<0>(std::move(p))), ""); |
| 68 | static_assert(std::is_same<int const&&, decltype(std::get<1>(std::move(p)))>::value, ""); |
| 69 | static_assert(noexcept(std::get<1>(std::move(p))), ""); |
| 70 | } |
| 71 | |
| 72 | #if TEST_STD_VER > 11 |
| 73 | { |
| 74 | typedef std::tuple<double, int> T; |
| 75 | constexpr const T t(2.718, 5); |
| 76 | static_assert(std::get<0>(std::move(t)) == 2.718, ""); |
| 77 | static_assert(std::get<1>(std::move(t)) == 5, ""); |
| 78 | } |
| 79 | #endif |
| 80 | } |