1 /* This file contains the implementation of class Protocol.
2 Copyright (C) 1993, 2004, 2009, 2010 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 Under Section 7 of GPL version 3, you are granted additional
17 permissions described in the GCC Runtime Library Exception, version
18 3.1, as published by the Free Software Foundation.
20 You should have received a copy of the GNU General Public License and
21 a copy of the GCC Runtime Library Exception along with this program;
22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 <http://www.gnu.org/licenses/>. */
25 #include "objc-private/common.h"
26 #include "objc/runtime.h"
27 #include "objc-private/module-abi-8.h"
28 #include "objc/Protocol.h"
30 @implementation Protocol
31 - (BOOL) isEqual: (id)obj
33 return protocol_isEqual (self, obj);
37 @implementation Protocol (Deprecated)
44 - (BOOL) conformsTo: (Protocol *)aProtocolObject
46 return protocol_conformsToProtocol (self, aProtocolObject);
49 - (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel
52 struct objc_protocol_list* proto_list;
53 struct objc_method_description *result;
56 for (i = 0; i < instance_methods->count; i++)
58 if (sel_isEqual (instance_methods->list[i].name, aSel))
59 return &(instance_methods->list[i]);
62 for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
65 for (j=0; j < proto_list->count; j++)
67 if ((result = [proto_list->list[j]
68 descriptionForInstanceMethod: aSel]))
76 - (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel;
79 struct objc_protocol_list* proto_list;
80 struct objc_method_description *result;
83 for (i = 0; i < class_methods->count; i++)
85 if (sel_isEqual (class_methods->list[i].name, aSel))
86 return &(class_methods->list[i]);
89 for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
92 for (j=0; j < proto_list->count; j++)
94 if ((result = [proto_list->list[j]
95 descriptionForClassMethod: aSel]))
105 /* Compute a hash of the protocol_name; use the same hash algorithm
106 that we use for class names; protocol names and class names are
107 somewhat similar types of string spaces. */
110 for (index = 0; protocol_name[index] != '\0'; index++)
112 hash = (hash << 4) ^ (hash >> 28) ^ protocol_name[index];
115 hash = (hash ^ (hash >> 10) ^ (hash >> 20));