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129 lines
3.4 KiB
Objective-C
129 lines
3.4 KiB
Objective-C
/* This file contains the implementation of class Protocol.
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Copyright (C) 1993 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* As a special exception, if you link this library with files
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compiled with GCC to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#include "objc/Protocol.h"
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#include "objc/objc-api.h"
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/* Method description list */
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struct objc_method_description_list {
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int count;
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struct objc_method_description list[1];
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};
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@implementation Protocol
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{
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@private
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char *protocol_name;
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struct objc_protocol_list *protocol_list;
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struct objc_method_description_list *instance_methods, *class_methods;
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}
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/* Obtaining attributes intrinsic to the protocol */
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- (const char *)name
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{
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return protocol_name;
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}
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/* Testing protocol conformance */
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- (BOOL) conformsTo: (Protocol *)aProtocolObject
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{
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int i;
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struct objc_protocol_list* proto_list;
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if (!strcmp(aProtocolObject->protocol_name, self->protocol_name))
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return YES;
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for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
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{
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for (i=0; i < proto_list->count; i++)
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{
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if ([proto_list->list[i] conformsTo: aProtocolObject])
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return YES;
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}
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}
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return NO;
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}
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/* Looking up information specific to a protocol */
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- (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel
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{
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int i;
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struct objc_protocol_list* proto_list;
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const char* name = sel_get_name (aSel);
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struct objc_method_description *result;
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for (i = 0; i < instance_methods->count; i++)
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{
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if (!strcmp ((char*)instance_methods->list[i].name, name))
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return &(instance_methods->list[i]);
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}
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for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
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{
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for (i=0; i < proto_list->count; i++)
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{
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if ((result = [proto_list->list[i]
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descriptionForInstanceMethod: aSel]))
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return result;
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}
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}
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return NULL;
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}
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- (struct objc_method_description *) descriptionForClassMethod:(SEL)aSel;
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{
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int i;
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struct objc_protocol_list* proto_list;
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const char* name = sel_get_name (aSel);
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struct objc_method_description *result;
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for (i = 0; i < class_methods->count; i++)
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{
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if (!strcmp ((char*)class_methods->list[i].name, name))
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return &(class_methods->list[i]);
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}
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for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
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{
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for (i=0; i < proto_list->count; i++)
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{
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if ((result = [proto_list->list[i]
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descriptionForClassMethod: aSel]))
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return result;
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}
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}
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return NULL;
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}
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@end
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