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141 lines
3.1 KiB
C++
141 lines
3.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <tuple>
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// template <class... Types> class tuple;
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// template <class... UTypes> tuple(const tuple<UTypes...>& u);
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// UNSUPPORTED: c++98, c++03
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#include <tuple>
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#include <utility>
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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struct Explicit {
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int value;
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explicit Explicit(int x) : value(x) {}
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};
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struct Implicit {
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int value;
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Implicit(int x) : value(x) {}
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};
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struct B
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{
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int id_;
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explicit B(int i) : id_(i) {}
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};
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struct D
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: B
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{
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explicit D(int i) : B(i) {}
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};
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#if TEST_STD_VER > 11
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struct A
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{
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int id_;
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constexpr A(int i) : id_(i) {}
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friend constexpr bool operator==(const A& x, const A& y) {return x.id_ == y.id_;}
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};
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struct C
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{
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int id_;
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constexpr explicit C(int i) : id_(i) {}
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friend constexpr bool operator==(const C& x, const C& y) {return x.id_ == y.id_;}
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};
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#endif
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int main()
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{
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{
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typedef std::tuple<long> T0;
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typedef std::tuple<long long> T1;
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T0 t0(2);
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T1 t1 = t0;
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assert(std::get<0>(t1) == 2);
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}
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#if TEST_STD_VER > 11
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{
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typedef std::tuple<int> T0;
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typedef std::tuple<A> T1;
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constexpr T0 t0(2);
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constexpr T1 t1 = t0;
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static_assert(std::get<0>(t1) == 2, "");
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}
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{
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typedef std::tuple<int> T0;
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typedef std::tuple<C> T1;
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constexpr T0 t0(2);
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constexpr T1 t1{t0};
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static_assert(std::get<0>(t1) == C(2), "");
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}
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#endif
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{
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typedef std::tuple<long, char> T0;
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typedef std::tuple<long long, int> T1;
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T0 t0(2, 'a');
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T1 t1 = t0;
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assert(std::get<0>(t1) == 2);
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assert(std::get<1>(t1) == int('a'));
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}
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{
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typedef std::tuple<long, char, D> T0;
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typedef std::tuple<long long, int, B> T1;
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T0 t0(2, 'a', D(3));
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T1 t1 = t0;
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assert(std::get<0>(t1) == 2);
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assert(std::get<1>(t1) == int('a'));
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assert(std::get<2>(t1).id_ == 3);
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}
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{
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D d(3);
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typedef std::tuple<long, char, D&> T0;
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typedef std::tuple<long long, int, B&> T1;
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T0 t0(2, 'a', d);
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T1 t1 = t0;
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d.id_ = 2;
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assert(std::get<0>(t1) == 2);
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assert(std::get<1>(t1) == int('a'));
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assert(std::get<2>(t1).id_ == 2);
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}
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{
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typedef std::tuple<long, char, int> T0;
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typedef std::tuple<long long, int, B> T1;
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T0 t0(2, 'a', 3);
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T1 t1(t0);
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assert(std::get<0>(t1) == 2);
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assert(std::get<1>(t1) == int('a'));
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assert(std::get<2>(t1).id_ == 3);
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}
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{
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const std::tuple<int> t1(42);
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std::tuple<Explicit> t2(t1);
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assert(std::get<0>(t2).value == 42);
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}
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{
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const std::tuple<int> t1(42);
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std::tuple<Implicit> t2 = t1;
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assert(std::get<0>(t2).value == 42);
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}
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}
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