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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/UniquePtr.h"
#include "mozilla/Variant.h"
using mozilla::MakeUnique;
using mozilla::UniquePtr;
using mozilla::Variant;
struct Destroyer {
static int destroyedCount;
~Destroyer() {
destroyedCount++;
}
};
int Destroyer::destroyedCount = 0;
static void
testSimple()
{
printf("testSimple\n");
Variant<uint32_t, uint64_t> v(uint64_t(1));
MOZ_RELEASE_ASSERT(v.is<uint64_t>());
MOZ_RELEASE_ASSERT(!v.is<uint32_t>());
MOZ_RELEASE_ASSERT(v.as<uint64_t>() == 1);
}
static void
testCopy()
{
printf("testCopy\n");
Variant<uint32_t, uint64_t> v1(uint64_t(1));
Variant<uint32_t, uint64_t> v2(v1);
MOZ_RELEASE_ASSERT(v2.is<uint64_t>());
MOZ_RELEASE_ASSERT(!v2.is<uint32_t>());
MOZ_RELEASE_ASSERT(v2.as<uint64_t>() == 1);
Variant<uint32_t, uint64_t> v3(uint32_t(10));
v3 = v2;
MOZ_RELEASE_ASSERT(v3.is<uint64_t>());
MOZ_RELEASE_ASSERT(v3.as<uint64_t>() == 1);
}
static void
testMove()
{
printf("testMove\n");
Variant<UniquePtr<int>, char> v1(MakeUnique<int>(5));
Variant<UniquePtr<int>, char> v2(Move(v1));
MOZ_RELEASE_ASSERT(v2.is<UniquePtr<int>>());
MOZ_RELEASE_ASSERT(*v2.as<UniquePtr<int>>() == 5);
MOZ_RELEASE_ASSERT(v1.is<UniquePtr<int>>());
MOZ_RELEASE_ASSERT(v1.as<UniquePtr<int>>() == nullptr);
Destroyer::destroyedCount = 0;
{
Variant<char, UniquePtr<Destroyer>> v3(MakeUnique<Destroyer>());
Variant<char, UniquePtr<Destroyer>> v4(Move(v3));
Variant<char, UniquePtr<Destroyer>> v5('a');
v5 = Move(v4);
auto ptr = v5.extract<UniquePtr<Destroyer>>();
MOZ_RELEASE_ASSERT(Destroyer::destroyedCount == 0);
}
MOZ_RELEASE_ASSERT(Destroyer::destroyedCount == 1);
}
static void
testDestructor()
{
printf("testDestructor\n");
Destroyer::destroyedCount = 0;
{
Destroyer d;
{
Variant<char, UniquePtr<char[]>, Destroyer> v(d);
MOZ_RELEASE_ASSERT(Destroyer::destroyedCount == 0); // None detroyed yet.
}
MOZ_RELEASE_ASSERT(Destroyer::destroyedCount == 1); // v's copy of d is destroyed.
}
MOZ_RELEASE_ASSERT(Destroyer::destroyedCount == 2); // d is destroyed.
}
static void
testEquality()
{
printf("testEquality\n");
using V = Variant<char, int>;
V v0('a');
V v1('b');
V v2('b');
V v3(42);
V v4(27);
V v5(27);
V v6(int('b'));
MOZ_RELEASE_ASSERT(v0 != v1);
MOZ_RELEASE_ASSERT(v1 == v2);
MOZ_RELEASE_ASSERT(v2 != v3);
MOZ_RELEASE_ASSERT(v3 != v4);
MOZ_RELEASE_ASSERT(v4 == v5);
MOZ_RELEASE_ASSERT(v1 != v6);
MOZ_RELEASE_ASSERT(v0 == v0);
MOZ_RELEASE_ASSERT(v1 == v1);
MOZ_RELEASE_ASSERT(v2 == v2);
MOZ_RELEASE_ASSERT(v3 == v3);
MOZ_RELEASE_ASSERT(v4 == v4);
MOZ_RELEASE_ASSERT(v5 == v5);
MOZ_RELEASE_ASSERT(v6 == v6);
}
struct Describer
{
static const char* little;
static const char* medium;
static const char* big;
const char* match(const uint8_t&) { return little; }
const char* match(const uint32_t&) { return medium; }
const char* match(const uint64_t&) { return big; }
};
const char* Describer::little = "little";
const char* Describer::medium = "medium";
const char* Describer::big = "big";
static void
testMatching()
{
printf("testMatching\n");
using V = Variant<uint8_t, uint32_t, uint64_t>;
Describer desc;
V v1(uint8_t(1));
V v2(uint32_t(2));
V v3(uint64_t(3));
MOZ_RELEASE_ASSERT(v1.match(desc) == Describer::little);
MOZ_RELEASE_ASSERT(v2.match(desc) == Describer::medium);
MOZ_RELEASE_ASSERT(v3.match(desc) == Describer::big);
const V& constRef1 = v1;
const V& constRef2 = v2;
const V& constRef3 = v3;
MOZ_RELEASE_ASSERT(constRef1.match(desc) == Describer::little);
MOZ_RELEASE_ASSERT(constRef2.match(desc) == Describer::medium);
MOZ_RELEASE_ASSERT(constRef3.match(desc) == Describer::big);
}
static void
testRvalueMatcher()
{
printf("testRvalueMatcher\n");
using V = Variant<uint8_t, uint32_t, uint64_t>;
V v(uint8_t(1));
MOZ_RELEASE_ASSERT(v.match(Describer()) == Describer::little);
}
int
main()
{
testSimple();
testCopy();
testMove();
testDestructor();
testEquality();
testMatching();
testRvalueMatcher();
printf("TestVariant OK!\n");
return 0;
}
|
