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/* Contributed by Nicola Pero - Fri Mar 9 21:35:47 CET 2001 */
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/* Contributed by Nicola Pero - Fri Mar 9 21:35:47 CET 2001 */
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#include <objc/objc.h>
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#include <objc/objc.h>
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#include <objc/Object.h>
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#include <objc/Object.h>
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/* Test defining a protocol, a class adopting it, and using an object
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/* Test defining a protocol, a class adopting it, and using an object
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of type `id <protocol>'. */
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of type `id <protocol>'. */
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@protocol Enabling
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@protocol Enabling
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- (BOOL) isEnabled;
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- (BOOL) isEnabled;
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- (void) setEnabled: (BOOL)flag;
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- (void) setEnabled: (BOOL)flag;
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@end
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@end
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@interface Feature : Object <Enabling>
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@interface Feature : Object <Enabling>
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{
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{
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const char *name;
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const char *name;
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BOOL isEnabled;
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BOOL isEnabled;
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}
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}
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@end
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@end
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@implementation Feature
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@implementation Feature
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- (BOOL) isEnabled
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- (BOOL) isEnabled
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{
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{
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return isEnabled;
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return isEnabled;
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}
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}
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- (void) setEnabled: (BOOL)flag
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- (void) setEnabled: (BOOL)flag
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{
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{
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isEnabled = flag;
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isEnabled = flag;
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}
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}
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@end
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@end
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int main (void)
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int main (void)
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{
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{
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id <Enabling> object;
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id <Enabling> object;
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object = [Feature new];
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object = [Feature new];
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[object setEnabled: YES];
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[object setEnabled: YES];
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if (![object isEnabled])
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if (![object isEnabled])
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{
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{
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abort ();
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abort ();
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}
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}
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return 0;
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return 0;
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}
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}
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