runtime/Protocol.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26         Protocol.h
  27         Copyright 1991-1996 NeXT Software, Inc.
  28 */
  29
  30 #ifndef _OBJC_PROTOCOL_H_
  31 #define _OBJC_PROTOCOL_H_
  32
  33 #import <objc/Object.h>
  34
  35 struct objc_method_description {
  36         SEL name;
  37         char *types;
  38 };
  39 struct objc_method_description_list {
  40         int count;
  41         struct objc_method_description list[1];
  42 };
  43
  44 @interface Protocol : Object
  45 {
  46 @private
  47         char *protocol_name;
  48         struct objc_protocol_list *protocol_list;
  49         struct objc_method_description_list *instance_methods, *class_methods;
  50 }
  51
  52 /* Obtaining attributes intrinsic to the protocol */
  53
  54 - (const char *)name;
  55
  56 /* Testing protocol conformance */
  57
  58 - (BOOL) conformsTo: (Protocol *)aProtocolObject;
  59
  60 /* Looking up information specific to a protocol */
  61
  62 - (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel;
  63 - (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel;
  64
  65 @end
  66
  67 #endif /* _OBJC_PROTOCOL_H_ */