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153 lines
3.8 KiB
Plaintext
153 lines
3.8 KiB
Plaintext
/*
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* Copyright (c) 1999-2001, 2005-2007 Apple Inc. All Rights Reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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/*
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Protocol.h
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Copyright 1991-1996 NeXT Software, Inc.
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*/
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#include "objc-private.h"
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#undef id
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#undef Class
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#include <stdlib.h>
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#include <string.h>
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#include <mach-o/dyld.h>
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#include <mach-o/ldsyms.h>
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#include "Protocol.h"
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#include "NSObject.h"
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// __IncompleteProtocol is used as the return type of objc_allocateProtocol().
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// Old ABI uses NSObject as the superclass even though Protocol uses Object
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// because the R/R implementation for class Protocol is added at runtime
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// by CF, so __IncompleteProtocol would be left without an R/R implementation
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// otherwise, which would break ARC.
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#ifdef DARLING
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// see libdispatch
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#if __has_attribute(objc_nonlazy_class)
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#define NONLAZY_CLASS __attribute__((objc_nonlazy_class))
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#define NONLAZY_CLASS_LOAD
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#else
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#define NONLAZY_CLASS
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#define NONLAZY_CLASS_LOAD + (void)load {}
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#endif
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#endif
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@interface __IncompleteProtocol : NSObject
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@end
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#if __OBJC2__
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#ifdef DARLING
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NONLAZY_CLASS
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#else
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__attribute__((objc_nonlazy_class))
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#endif
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#endif
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@implementation __IncompleteProtocol
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#ifdef DARLING
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NONLAZY_CLASS_LOAD
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#endif
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@end
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#if __OBJC2__
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#ifdef DARLING
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NONLAZY_CLASS
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#else
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__attribute__((objc_nonlazy_class))
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#endif
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#endif
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@implementation Protocol
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#ifdef DARLING
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NONLAZY_CLASS_LOAD
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#endif
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- (BOOL) conformsTo: (Protocol *)aProtocolObj
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{
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return protocol_conformsToProtocol(self, aProtocolObj);
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}
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- (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel
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{
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#if !__OBJC2__
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return lookup_protocol_method((struct old_protocol *)self, aSel,
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YES/*required*/, YES/*instance*/,
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YES/*recursive*/);
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#else
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return method_getDescription(protocol_getMethod((struct protocol_t *)self,
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aSel, YES, YES, YES));
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#endif
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}
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- (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel
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{
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#if !__OBJC2__
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return lookup_protocol_method((struct old_protocol *)self, aSel,
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YES/*required*/, NO/*instance*/,
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YES/*recursive*/);
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#else
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return method_getDescription(protocol_getMethod((struct protocol_t *)self,
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aSel, YES, NO, YES));
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#endif
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}
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- (const char *)name
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{
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return protocol_getName(self);
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}
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- (BOOL)isEqual:other
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{
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#if __OBJC2__
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// check isKindOf:
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Class cls;
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Class protoClass = objc_getClass("Protocol");
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for (cls = object_getClass(other); cls; cls = cls->getSuperclass()) {
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if (cls == protoClass) break;
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}
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if (!cls) return NO;
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// check equality
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return protocol_isEqual(self, other);
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#else
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return [other isKindOf:[Protocol class]] && [self conformsTo: other] && [other conformsTo: self];
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#endif
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}
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#if __OBJC2__
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- (NSUInteger)hash
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{
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return 23;
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}
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#else
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- (unsigned)hash
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{
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return 23;
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}
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#endif
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@end
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