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@end
25
26@implementation A // expected-warning {{class property 'c2' requires method 'c2' to be defined}} \
27                  // expected-warning {{class property 'c2' requires method 'setC2:' to be defined}}
28@dynamic x; // refers to the instance property
29@dynamic (class) x; // refers to the class property
30@synthesize z, c2; // expected-error {{@synthesize not allowed on a class property 'c2'}}
31@dynamic c; // refers to the class property
32@end
33
34int test() {
35  A *a = [[A alloc] init];
36  a.c; // expected-error {{property 'c' is a class property; did you mean to access it with class 'A'}}
37  return a.x + A.c;
38}
39
40void message_id(id me) {
41  [me y];
42}
43
44void message_class(Class me) {
45  [me c2];
46}
47
48@interface NSObject
49@end
50
51@interface MyClass : NSObject
52@property(class, readonly) int classProp; // expected-note {{property declared here}}
53@end
54
55@implementation MyClass // expected-warning {{class property 'classProp' requires method 'classProp' to be defined}}
56- (int)classProp { // Oops, mistakenly made this an instance method.
57  return 8;
58}
59@end
60