1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// <utility>
// template <class T, class U> struct pair;
// pair(pair const&) = default;
// pair(pair &&) = default;
// pair& operator=(pair const&);
// pair& operator=(pair&&);
// Test that the copy/move constructors and assignment operators are
// correctly defined or deleted based on the properties of `T` and `U`.
#include <cassert>
#include <string>
#include <tuple>
#include "archetypes.hpp"
using namespace ImplicitTypes; // Get implicitly archetypes
namespace ConstructorTest {
template <class T1, bool CanCopy = true, bool CanMove = CanCopy> void test() {
using P1 = std::pair<T1, int>;
using P2 = std::pair<int, T1>;
static_assert(std::is_copy_constructible<P1>::value == CanCopy, "");
static_assert(std::is_move_constructible<P1>::value == CanMove, "");
static_assert(std::is_copy_constructible<P2>::value == CanCopy, "");
static_assert(std::is_move_constructible<P2>::value == CanMove, "");
};
} // namespace ConstructorTest
void test_constructors_exist() {
using namespace ConstructorTest;
{
test<int>();
test<int &>();
test<int &&, false, true>();
test<const int>();
test<const int &>();
test<const int &&, false, true>();
}
{
test<Copyable>();
test<Copyable &>();
test<Copyable &&, false, true>();
}
{
test<NonCopyable, false>();
test<NonCopyable &, true>();
test<NonCopyable &&, false, true>();
}
{
// Even though CopyOnly has an explicitly deleted move constructor
// pair's move constructor is only implicitly deleted and therefore
// it doesn't participate in overload resolution.
test<CopyOnly, true, true>();
test<CopyOnly &, true>();
test<CopyOnly &&, false, true>();
}
{
test<MoveOnly, false, true>();
test<MoveOnly &, true>();
test<MoveOnly &&, false, true>();
}
}
namespace AssignmentOperatorTest {
template <class T1, bool CanCopy = true, bool CanMove = CanCopy> void test() {
using P1 = std::pair<T1, int>;
using P2 = std::pair<int, T1>;
static_assert(std::is_copy_assignable<P1>::value == CanCopy, "");
static_assert(std::is_move_assignable<P1>::value == CanMove, "");
static_assert(std::is_copy_assignable<P2>::value == CanCopy, "");
static_assert(std::is_move_assignable<P2>::value == CanMove, "");
};
} // namespace AssignmentOperatorTest
void test_assignment_operator_exists() {
using namespace AssignmentOperatorTest;
{
test<int>();
test<int &>();
test<int &&>();
test<const int, false>();
test<const int &, false>();
test<const int &&, false>();
}
{
test<Copyable>();
test<Copyable &>();
test<Copyable &&>();
}
{
test<NonCopyable, false>();
test<NonCopyable &, false>();
test<NonCopyable &&, false>();
}
{
test<CopyOnly, true>();
test<CopyOnly &, true>();
test<CopyOnly &&, true>();
}
{
test<MoveOnly, false, true>();
test<MoveOnly &, false, false>();
test<MoveOnly &&, false, true>();
}
}
int main() {
test_constructors_exist();
test_assignment_operator_exists();
}
|