| /* This file contains the implementation of class Protocol. |
| Copyright (C) 1993, 2004, 2009, 2010 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "objc-private/common.h" |
| #include "objc/runtime.h" |
| #include "objc-private/module-abi-8.h" |
| #include "objc/Protocol.h" |
| |
| @implementation Protocol |
| - (BOOL) isEqual: (id)obj |
| { |
| return protocol_isEqual (self, obj); |
| } |
| @end |
| |
| @implementation Protocol (Deprecated) |
| |
| - (const char *)name |
| { |
| return protocol_name; |
| } |
| |
| - (BOOL) conformsTo: (Protocol *)aProtocolObject |
| { |
| return protocol_conformsToProtocol (self, aProtocolObject); |
| } |
| |
| - (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel |
| { |
| int i; |
| struct objc_protocol_list* proto_list; |
| struct objc_method_description *result; |
| |
| if (instance_methods) |
| for (i = 0; i < instance_methods->count; i++) |
| { |
| if (sel_isEqual (instance_methods->list[i].name, aSel)) |
| return &(instance_methods->list[i]); |
| } |
| |
| for (proto_list = protocol_list; proto_list; proto_list = proto_list->next) |
| { |
| size_t j; |
| for (j=0; j < proto_list->count; j++) |
| { |
| if ((result = [proto_list->list[j] |
| descriptionForInstanceMethod: aSel])) |
| return result; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| - (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel; |
| { |
| int i; |
| struct objc_protocol_list* proto_list; |
| struct objc_method_description *result; |
| |
| if (class_methods) |
| for (i = 0; i < class_methods->count; i++) |
| { |
| if (sel_isEqual (class_methods->list[i].name, aSel)) |
| return &(class_methods->list[i]); |
| } |
| |
| for (proto_list = protocol_list; proto_list; proto_list = proto_list->next) |
| { |
| size_t j; |
| for (j=0; j < proto_list->count; j++) |
| { |
| if ((result = [proto_list->list[j] |
| descriptionForClassMethod: aSel])) |
| return result; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| - (unsigned) hash |
| { |
| /* Compute a hash of the protocol_name; use the same hash algorithm |
| that we use for class names; protocol names and class names are |
| somewhat similar types of string spaces. */ |
| int hash = 0, index; |
| |
| for (index = 0; protocol_name[index] != '\0'; index++) |
| { |
| hash = (hash << 4) ^ (hash >> 28) ^ protocol_name[index]; |
| } |
| |
| hash = (hash ^ (hash >> 10) ^ (hash >> 20)); |
| |
| return hash; |
| } |
| |
| @end |