/
arc-type-traits.mm
215 lines (188 loc) · 11.3 KB
/
arc-type-traits.mm
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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
// RUN: %clang_cc1 -fsyntax-only -fobjc-arc -fobjc-runtime-has-weak -verify -std=c++11 %s
// expected-no-diagnostics
// Check the results of the various type-trait query functions on
// lifetime-qualified types in ARC.
#define JOIN3(X,Y) X ## Y
#define JOIN2(X,Y) JOIN3(X,Y)
#define JOIN(X,Y) JOIN2(X,Y)
#define TRAIT_IS_TRUE(Trait, Type) char JOIN2(Trait,__LINE__)[Trait(Type)? 1 : -1]
#define TRAIT_IS_FALSE(Trait, Type) char JOIN2(Trait,__LINE__)[Trait(Type)? -1 : 1]
#define TRAIT_IS_TRUE_2(Trait, Type1, Type2) char JOIN2(Trait,__LINE__)[Trait(Type1, Type2)? 1 : -1]
#define TRAIT_IS_FALSE_2(Trait, Type1, Type2) char JOIN2(Trait,__LINE__)[Trait(Type1, Type2)? -1 : 1]
struct HasStrong { id obj; };
struct HasWeak { __weak id obj; };
struct HasUnsafeUnretained { __unsafe_unretained id obj; };
// __has_nothrow_assign
TRAIT_IS_TRUE(__has_nothrow_assign, __strong id);
TRAIT_IS_TRUE(__has_nothrow_assign, __weak id);
TRAIT_IS_TRUE(__has_nothrow_assign, __autoreleasing id);
TRAIT_IS_TRUE(__has_nothrow_assign, __unsafe_unretained id);
TRAIT_IS_TRUE(__has_nothrow_assign, HasStrong);
TRAIT_IS_TRUE(__has_nothrow_assign, HasWeak);
TRAIT_IS_TRUE(__has_nothrow_assign, HasUnsafeUnretained);
// __has_nothrow_copy
TRAIT_IS_TRUE(__has_nothrow_copy, __strong id);
TRAIT_IS_TRUE(__has_nothrow_copy, __weak id);
TRAIT_IS_TRUE(__has_nothrow_copy, __autoreleasing id);
TRAIT_IS_TRUE(__has_nothrow_copy, __unsafe_unretained id);
TRAIT_IS_TRUE(__has_nothrow_copy, HasStrong);
TRAIT_IS_TRUE(__has_nothrow_copy, HasWeak);
TRAIT_IS_TRUE(__has_nothrow_copy, HasUnsafeUnretained);
// __has_nothrow_constructor
TRAIT_IS_TRUE(__has_nothrow_constructor, __strong id);
TRAIT_IS_TRUE(__has_nothrow_constructor, __weak id);
TRAIT_IS_TRUE(__has_nothrow_constructor, __autoreleasing id);
TRAIT_IS_TRUE(__has_nothrow_constructor, __unsafe_unretained id);
TRAIT_IS_TRUE(__has_nothrow_constructor, HasStrong);
TRAIT_IS_TRUE(__has_nothrow_constructor, HasWeak);
TRAIT_IS_TRUE(__has_nothrow_constructor, HasUnsafeUnretained);
// __has_trivial_assign
TRAIT_IS_FALSE(__has_trivial_assign, __strong id);
TRAIT_IS_FALSE(__has_trivial_assign, __weak id);
TRAIT_IS_FALSE(__has_trivial_assign, __autoreleasing id);
TRAIT_IS_TRUE(__has_trivial_assign, __unsafe_unretained id);
TRAIT_IS_FALSE(__has_trivial_assign, HasStrong);
TRAIT_IS_FALSE(__has_trivial_assign, HasWeak);
TRAIT_IS_TRUE(__has_trivial_assign, HasUnsafeUnretained);
// __has_trivial_copy
TRAIT_IS_FALSE(__has_trivial_copy, __strong id);
TRAIT_IS_FALSE(__has_trivial_copy, __weak id);
TRAIT_IS_FALSE(__has_trivial_copy, __autoreleasing id);
TRAIT_IS_TRUE(__has_trivial_copy, __unsafe_unretained id);
TRAIT_IS_FALSE(__has_trivial_copy, HasStrong);
TRAIT_IS_FALSE(__has_trivial_copy, HasWeak);
TRAIT_IS_TRUE(__has_trivial_copy, HasUnsafeUnretained);
// __has_trivial_constructor
TRAIT_IS_FALSE(__has_trivial_constructor, __strong id);
TRAIT_IS_FALSE(__has_trivial_constructor, __weak id);
TRAIT_IS_FALSE(__has_trivial_constructor, __autoreleasing id);
TRAIT_IS_TRUE(__has_trivial_constructor, __unsafe_unretained id);
TRAIT_IS_FALSE(__has_trivial_constructor, HasStrong);
TRAIT_IS_FALSE(__has_trivial_constructor, HasWeak);
TRAIT_IS_TRUE(__has_trivial_constructor, HasUnsafeUnretained);
// __has_trivial_destructor
TRAIT_IS_FALSE(__has_trivial_destructor, __strong id);
TRAIT_IS_FALSE(__has_trivial_destructor, __weak id);
TRAIT_IS_TRUE(__has_trivial_destructor, __autoreleasing id);
TRAIT_IS_TRUE(__has_trivial_destructor, __unsafe_unretained id);
TRAIT_IS_FALSE(__has_trivial_destructor, HasStrong);
TRAIT_IS_FALSE(__has_trivial_destructor, HasWeak);
TRAIT_IS_TRUE(__has_trivial_destructor, HasUnsafeUnretained);
// __is_literal
TRAIT_IS_TRUE(__is_literal, __strong id);
TRAIT_IS_TRUE(__is_literal, __weak id);
TRAIT_IS_TRUE(__is_literal, __autoreleasing id);
TRAIT_IS_TRUE(__is_literal, __unsafe_unretained id);
// __is_literal_type
TRAIT_IS_TRUE(__is_literal_type, __strong id);
TRAIT_IS_TRUE(__is_literal_type, __weak id);
TRAIT_IS_TRUE(__is_literal_type, __autoreleasing id);
TRAIT_IS_TRUE(__is_literal_type, __unsafe_unretained id);
// __is_pod
TRAIT_IS_FALSE(__is_pod, __strong id);
TRAIT_IS_FALSE(__is_pod, __weak id);
TRAIT_IS_FALSE(__is_pod, __autoreleasing id);
TRAIT_IS_TRUE(__is_pod, __unsafe_unretained id);
TRAIT_IS_FALSE(__is_pod, HasStrong);
TRAIT_IS_FALSE(__is_pod, HasWeak);
TRAIT_IS_TRUE(__is_pod, HasUnsafeUnretained);
// __is_trivial
TRAIT_IS_FALSE(__is_trivial, __strong id);
TRAIT_IS_FALSE(__is_trivial, __weak id);
TRAIT_IS_FALSE(__is_trivial, __autoreleasing id);
TRAIT_IS_TRUE(__is_trivial, __unsafe_unretained id);
TRAIT_IS_FALSE(__is_trivial, HasStrong);
TRAIT_IS_FALSE(__is_trivial, HasWeak);
TRAIT_IS_TRUE(__is_trivial, HasUnsafeUnretained);
// __is_scalar
TRAIT_IS_FALSE(__is_scalar, __strong id);
TRAIT_IS_FALSE(__is_scalar, __weak id);
TRAIT_IS_FALSE(__is_scalar, __autoreleasing id);
TRAIT_IS_TRUE(__is_scalar, __unsafe_unretained id);
// __is_standard_layout
TRAIT_IS_TRUE(__is_standard_layout, __strong id);
TRAIT_IS_TRUE(__is_standard_layout, __weak id);
TRAIT_IS_TRUE(__is_standard_layout, __autoreleasing id);
TRAIT_IS_TRUE(__is_standard_layout, __unsafe_unretained id);
// __is_trivally_assignable
TRAIT_IS_FALSE_2(__is_trivially_assignable, __strong id&, __strong id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __strong id&, __weak id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __strong id&, __autoreleasing id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __strong id&, __unsafe_unretained id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __strong id&, __strong id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __strong id&, __weak id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __strong id&, __autoreleasing id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __strong id&, __unsafe_unretained id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __weak id&, __strong id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __weak id&, __weak id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __weak id&, __autoreleasing id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __weak id&, __unsafe_unretained id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __weak id&, __strong id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __weak id&, __weak id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __weak id&, __autoreleasing id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __weak id&, __unsafe_unretained id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __autoreleasing id&, __strong id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __autoreleasing id&, __weak id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __autoreleasing id&, __autoreleasing id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __autoreleasing id&, __unsafe_unretained id);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __autoreleasing id&, __strong id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __autoreleasing id&, __weak id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __autoreleasing id&, __autoreleasing id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, __autoreleasing id&, __unsafe_unretained id&&);
TRAIT_IS_TRUE_2(__is_trivially_assignable, __unsafe_unretained id&, __strong id);
TRAIT_IS_TRUE_2(__is_trivially_assignable, __unsafe_unretained id&, __weak id);
TRAIT_IS_TRUE_2(__is_trivially_assignable, __unsafe_unretained id&, __autoreleasing id);
TRAIT_IS_TRUE_2(__is_trivially_assignable, __unsafe_unretained id&, __unsafe_unretained id);
TRAIT_IS_TRUE_2(__is_trivially_assignable, __unsafe_unretained id&, __strong id&&);
TRAIT_IS_TRUE_2(__is_trivially_assignable, __unsafe_unretained id&, __weak id&&);
TRAIT_IS_TRUE_2(__is_trivially_assignable, __unsafe_unretained id&, __autoreleasing id&&);
TRAIT_IS_TRUE_2(__is_trivially_assignable, __unsafe_unretained id&, __unsafe_unretained id&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, HasStrong&, HasStrong);
TRAIT_IS_FALSE_2(__is_trivially_assignable, HasStrong&, HasStrong&&);
TRAIT_IS_FALSE_2(__is_trivially_assignable, HasWeak&, HasWeak);
TRAIT_IS_FALSE_2(__is_trivially_assignable, HasWeak&, HasWeak&&);
TRAIT_IS_TRUE_2(__is_trivially_assignable, HasUnsafeUnretained&, HasUnsafeUnretained);
TRAIT_IS_TRUE_2(__is_trivially_assignable, HasUnsafeUnretained&, HasUnsafeUnretained&&);
// __is_trivally_constructible
TRAIT_IS_FALSE(__is_trivially_constructible, __strong id);
TRAIT_IS_FALSE(__is_trivially_constructible, __weak id);
TRAIT_IS_FALSE(__is_trivially_constructible, __autoreleasing id);
TRAIT_IS_TRUE(__is_trivially_constructible, __unsafe_unretained id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __strong id, __strong id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __strong id, __weak id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __strong id, __autoreleasing id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __strong id, __unsafe_unretained id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __strong id, __strong id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __strong id, __weak id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __strong id, __autoreleasing id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __strong id, __unsafe_unretained id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __weak id, __strong id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __weak id, __weak id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __weak id, __autoreleasing id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __weak id, __unsafe_unretained id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __weak id, __strong id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __weak id, __weak id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __weak id, __autoreleasing id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __weak id, __unsafe_unretained id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __autoreleasing id, __strong id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __autoreleasing id, __weak id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __autoreleasing id, __autoreleasing id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __autoreleasing id, __unsafe_unretained id);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __autoreleasing id, __strong id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __autoreleasing id, __weak id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __autoreleasing id, __autoreleasing id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, __autoreleasing id, __unsafe_unretained id&&);
TRAIT_IS_TRUE_2(__is_trivially_constructible, __unsafe_unretained id, __strong id);
TRAIT_IS_TRUE_2(__is_trivially_constructible, __unsafe_unretained id, __weak id);
TRAIT_IS_TRUE_2(__is_trivially_constructible, __unsafe_unretained id, __autoreleasing id);
TRAIT_IS_TRUE_2(__is_trivially_constructible, __unsafe_unretained id, __unsafe_unretained id);
TRAIT_IS_TRUE_2(__is_trivially_constructible, __unsafe_unretained id, __strong id&&);
TRAIT_IS_TRUE_2(__is_trivially_constructible, __unsafe_unretained id, __weak id&&);
TRAIT_IS_TRUE_2(__is_trivially_constructible, __unsafe_unretained id, __autoreleasing id&&);
TRAIT_IS_TRUE_2(__is_trivially_constructible, __unsafe_unretained id, __unsafe_unretained id&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, HasStrong, HasStrong);
TRAIT_IS_FALSE_2(__is_trivially_constructible, HasStrong, HasStrong&&);
TRAIT_IS_FALSE_2(__is_trivially_constructible, HasWeak, HasWeak);
TRAIT_IS_FALSE_2(__is_trivially_constructible, HasWeak, HasWeak&&);
TRAIT_IS_TRUE_2(__is_trivially_constructible, HasUnsafeUnretained, HasUnsafeUnretained);
TRAIT_IS_TRUE_2(__is_trivially_constructible, HasUnsafeUnretained, HasUnsafeUnretained&&);