summaryrefslogtreecommitdiff
path: root/clang/test/SemaObjC/forward-class-1.m
blob: 85c6c875014b382302bb89e33440839e12259224 (about) (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
49
50
51
52
53
54
55
56
57
58
// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s

@class FOO, BAR; // expected-note {{forward declaration of class here}}
@class FOO, BAR; 

@interface INTF : FOO	// expected-error {{attempting to use the forward class 'FOO' as superclass of 'INTF'}}
@end

@interface FOO 
- (BAR*) Meth1;
- (FOO*) Meth2;
@end

@interface INTF1 : FOO	
@end

@interface INTF2 : INTF1 // expected-note {{previous definition is here}}
@end


@class INTF1, INTF2;

@interface INTF2 : INTF1 // expected-error {{duplicate interface definition for class 'INTF2'}}
@end

// 2nd test of a forward class declaration matching a typedef name
// referring to class object.
// FIXME. This may become a negative test should we decide to make this an error.
//
@interface NSObject @end

@protocol XCElementP @end

typedef NSObject <XCElementP> XCElement; // expected-note {{previous definition is here}}

@interface XCElementMainImp  {
  XCElement * _editingElement;
}
@end

@class XCElement; // expected-warning {{redefinition of forward class 'XCElement' of a typedef name of an object type is ignored}}

@implementation XCElementMainImp
- (XCElement *)editingElement  { return _editingElement;  }
@end


// rdar://9653341
@class B; // expected-note {{forward declaration of class here}}
@interface A : B {} // expected-error {{attempting to use the forward class 'B' as superclass of 'A'}}
@end

@interface B : A {}
@end

@implementation A @end
@implementation B @end