forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <tuple>
|
|
|
|
// template <class... Types> class tuple;
|
|
|
|
// template <size_t I, class... Types>
|
|
// const typename tuple_element<I, tuple<Types...> >::type&&
|
|
// get(const tuple<Types...>&& t);
|
|
|
|
// UNSUPPORTED: c++98, c++03
|
|
|
|
#include <tuple>
|
|
#include <utility>
|
|
#include <string>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
|
|
int main()
|
|
{
|
|
{
|
|
typedef std::tuple<int> T;
|
|
const T t(3);
|
|
static_assert(std::is_same<const int&&, decltype(std::get<0>(std::move(t)))>::value, "");
|
|
static_assert(noexcept(std::get<0>(std::move(t))), "");
|
|
const int&& i = std::get<0>(std::move(t));
|
|
assert(i == 3);
|
|
}
|
|
|
|
{
|
|
typedef std::tuple<std::string, int> T;
|
|
const T t("high", 5);
|
|
static_assert(std::is_same<const std::string&&, decltype(std::get<0>(std::move(t)))>::value, "");
|
|
static_assert(noexcept(std::get<0>(std::move(t))), "");
|
|
static_assert(std::is_same<const int&&, decltype(std::get<1>(std::move(t)))>::value, "");
|
|
static_assert(noexcept(std::get<1>(std::move(t))), "");
|
|
const std::string&& s = std::get<0>(std::move(t));
|
|
const int&& i = std::get<1>(std::move(t));
|
|
assert(s == "high");
|
|
assert(i == 5);
|
|
}
|
|
|
|
{
|
|
int x = 42;
|
|
int const y = 43;
|
|
std::tuple<int&, int const&> const p(x, y);
|
|
static_assert(std::is_same<int&, decltype(std::get<0>(std::move(p)))>::value, "");
|
|
static_assert(noexcept(std::get<0>(std::move(p))), "");
|
|
static_assert(std::is_same<int const&, decltype(std::get<1>(std::move(p)))>::value, "");
|
|
static_assert(noexcept(std::get<1>(std::move(p))), "");
|
|
}
|
|
|
|
{
|
|
int x = 42;
|
|
int const y = 43;
|
|
std::tuple<int&&, int const&&> const p(std::move(x), std::move(y));
|
|
static_assert(std::is_same<int&&, decltype(std::get<0>(std::move(p)))>::value, "");
|
|
static_assert(noexcept(std::get<0>(std::move(p))), "");
|
|
static_assert(std::is_same<int const&&, decltype(std::get<1>(std::move(p)))>::value, "");
|
|
static_assert(noexcept(std::get<1>(std::move(p))), "");
|
|
}
|
|
|
|
#if TEST_STD_VER > 11
|
|
{
|
|
typedef std::tuple<double, int> T;
|
|
constexpr const T t(2.718, 5);
|
|
static_assert(std::get<0>(std::move(t)) == 2.718, "");
|
|
static_assert(std::get<1>(std::move(t)) == 5, "");
|
|
}
|
|
#endif
|
|
}
|