blob: bc4a3d07e978081000dcb89328bcf2bbda1c256c (
plain)
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
|
/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010. */
/* { dg-do compile } */
#include <objc/objc.h>
/* Test that @optional for @protocol works. */
@protocol MyProtocol
+ (int)classMethod;
- (int)method;
@optional
+ (int)optionalClassMethod;
- (int)optionalMethod;
@end
@interface MyRootClass <MyProtocol>
@end
/* The implementation implements both the @required methods, but none
of the @optional ones. There should be no warnings as the
@optional methods are optional. ;-) */
@implementation MyRootClass
+ (int)classMethod
{
return 20;
}
- (int)method
{
return 11;
}
@end
int function (id <MyProtocol> object1,
MyRootClass *object2)
{
/* Test that there are no warnings if you try to use an @optional
method with an object of the class. */
int i = 0;
i += [object1 method];
i += [object2 method];
i += [MyRootClass classMethod];
i += [object1 optionalMethod];
i += [object2 optionalMethod];
i += [MyRootClass optionalClassMethod];
return i;
}
|
