1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3#if !__has_feature(objc_class_property)
4#error does not support class property
5#endif
6
7@interface Root
8-(id) alloc;
9-(id) init;
10@end
11
12@interface A : Root {
13  int x;
14  int z;
15}
16@property int x;
17@property int y;
18@property int z;
19@property(readonly) int ro, ro2;
20@property (class) int c;
21@property (class) int c2; // expected-note {{property declared here}} \
22                          // expected-note {{property declared here}}
23@property (class) int x;
24@property (class, setter=customSet:) int customSetterProperty;
25@property (class, getter=customGet) int customGetterProperty;
26@end
27
28@implementation A // expected-warning {{class property 'c2' requires method 'c2' to be defined}} \
29                  // expected-warning {{class property 'c2' requires method 'setC2:' to be defined}}
30@dynamic x; // refers to the instance property
31@dynamic (class) x; // refers to the class property
32@synthesize z, c2; // expected-error {{@synthesize not allowed on a class property 'c2'}}
33@dynamic c; // refers to the class property
34@dynamic customSetterProperty;
35@dynamic customGetterProperty;
36@end
37
38int test() {
39  A *a = [[A alloc] init];
40  a.c; // expected-error {{property 'c' is a class property; did you mean to access it with class 'A'}}
41  return a.x + A.c;
42}
43
44void customSelectors() {
45  A.customSetterProperty = 1;
46  (void)A.customGetterProperty;
47}
48
49void message_id(id me) {
50  [me y];
51}
52
53void message_class(Class me) {
54  [me c2];
55}
56
57@interface NSObject
58@end
59
60@interface MyClass : NSObject
61@property(class, readonly) int classProp; // expected-note {{property declared here}}
62@end
63
64@implementation MyClass // expected-warning {{class property 'classProp' requires method 'classProp' to be defined}}
65- (int)classProp { // Oops, mistakenly made this an instance method.
66  return 8;
67}
68@end
69