llvm-project/clang/test/SemaObjC/property-category-4.m

// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s

@interface IDELogNavigator
{
  id selectedObjects;
}
@end

@interface IDELogNavigator (CAT)
  @property (readwrite, retain) id selectedObjects; // expected-note {{property declared here}}
  @property (readwrite, retain) id d_selectedObjects; // expected-note {{property declared here}}
@end

@implementation IDELogNavigator 
@synthesize selectedObjects = _selectedObjects; // expected-error {{property declared in category 'CAT' cannot be implemented in class implementation}}
@dynamic d_selectedObjects; // expected-error {{property declared in category 'CAT' cannot be implemented in class implementation}}
@end


// rdar://13713098
// Test1
@interface NSArray 
- (int)count;
@end

@protocol MyCountable
@property  (readonly) int count;
@end


@interface NSArray(Additions) <MyCountable>
@end

@implementation NSArray(Additions)
@end

// Test2
@protocol NSProtocol
- (int)count;
@end

@interface NSArray1 <NSProtocol>
@end

@interface NSArray1(Additions) <MyCountable>
@end

@implementation NSArray1(Additions)
@end

// Test3
@interface Super <NSProtocol>
@end

@interface NSArray2 : Super @end

@interface NSArray2(Additions) <MyCountable>
@end

@implementation NSArray2(Additions)
@end

// Test3
@interface Super1 <NSProtocol>
@property  (readonly) int count;
@end

@protocol MyCountable1
@end

@interface NSArray3 : Super1 <MyCountable1>
@end

@implementation NSArray3
@end

// Test4
@interface I
@property int d1;
@end

@interface I(CAT)
@property int d1;
@end

@implementation I(CAT)
@end

// Test5 
@interface C @end

@interface C (CAT)
- (int) p;
@end


@interface C (Category)
@property (readonly) int p;  // no warning for this property - a getter is declared in another category
@property (readonly) int p1; // expected-note {{property declared here}}
@property (readonly) int p2;  // no warning for this property - a getter is declared in this category
- (int) p2;
@end

@implementation C (Category)  // expected-warning {{property 'p1' requires method 'p1' to be defined - use @dynamic or provide a method implementation in this category}}
@end

// Test6
@protocol MyProtocol
@property (readonly) float  anotherFloat; // expected-note {{property declared here}}
@property (readonly) float  Float; // no warning for this property - a getter is declared in this protocol
- (float) Float;
@end

@interface MyObject 
{ float anotherFloat; }
@end

@interface MyObject (CAT) <MyProtocol>
@end

@implementation MyObject (CAT) // expected-warning {{property 'anotherFloat' requires method 'anotherFloat' to be defined - use @dynamic or provide a method implementation in this category}}
@end