/* This file contains the implementation of class Protocol.
- Copyright (C) 1993, 2004 Free Software Foundation, Inc.
+ 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 2, or (at your option)
+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,
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-/* As a special exception, if you link this library with files
- compiled with GCC to produce an executable, this does not cause
- the resulting executable to be covered by the GNU General Public License.
- This exception does not however invalidate any other reasons why
- the executable file might be covered by the GNU General Public License. */
+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.
-#include "objc/Protocol.h"
-#include "objc/objc-api.h"
-
-/* Method description list */
-struct objc_method_description_list {
- int count;
- struct objc_method_description list[1];
-};
+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
{
-@private
- char *protocol_name;
- struct objc_protocol_list *protocol_list;
- struct objc_method_description_list *instance_methods, *class_methods;
+ return protocol_isEqual (self, obj);
}
+@end
-/* Obtaining attributes intrinsic to the protocol */
+@implementation Protocol (Deprecated)
- (const char *)name
{
return protocol_name;
}
-/* Testing protocol conformance */
-
- (BOOL) conformsTo: (Protocol *)aProtocolObject
{
- size_t i;
- struct objc_protocol_list* proto_list;
-
- if (aProtocolObject == nil)
- return NO;
-
- if (!strcmp(aProtocolObject->protocol_name, self->protocol_name))
- return YES;
-
- for (proto_list = protocol_list; proto_list; proto_list = proto_list->next)
- {
- for (i=0; i < proto_list->count; i++)
- {
- if ([proto_list->list[i] conformsTo: aProtocolObject])
- return YES;
- }
- }
-
- return NO;
+ return protocol_conformsToProtocol (self, aProtocolObject);
}
-/* Looking up information specific to a protocol */
-
- (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel
{
int i;
struct objc_protocol_list* proto_list;
- const char* name = sel_get_name (aSel);
struct objc_method_description *result;
if (instance_methods)
for (i = 0; i < instance_methods->count; i++)
{
- if (!strcmp ((char*)instance_methods->list[i].name, name))
+ if (sel_isEqual (instance_methods->list[i].name, aSel))
return &(instance_methods->list[i]);
}
for (j=0; j < proto_list->count; j++)
{
if ((result = [proto_list->list[j]
- descriptionForInstanceMethod: aSel]))
+ descriptionForInstanceMethod: aSel]))
return result;
}
}
{
int i;
struct objc_protocol_list* proto_list;
- const char* name = sel_get_name (aSel);
struct objc_method_description *result;
if (class_methods)
for (i = 0; i < class_methods->count; i++)
{
- if (!strcmp ((char*)class_methods->list[i].name, name))
+ if (sel_isEqual (class_methods->list[i].name, aSel))
return &(class_methods->list[i]);
}
for (j=0; j < proto_list->count; j++)
{
if ((result = [proto_list->list[j]
- descriptionForClassMethod: aSel]))
+ descriptionForClassMethod: aSel]))
return result;
}
}
- (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.
- */
+ 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++)
return hash;
}
-/*
- * Equality between formal protocols is only formal (nothing to do
- * with actually checking the list of methods they have!). Two formal
- * Protocols are equal if and only if they have the same name.
- *
- * Please note (for comparisons with other implementations) that
- * checking the names is equivalent to checking that Protocol A
- * conforms to Protocol B and Protocol B conforms to Protocol A,
- * because this happens iff they have the same name. If they have
- * different names, A conforms to B if and only if A includes B, but
- * the situation where A includes B and B includes A is a circular
- * dependency between Protocols which is forbidden by the compiler, so
- * A conforms to B and B conforms to A with A and B having different
- * names is an impossible case.
- */
-- (BOOL) isEqual: (id)obj
-{
- if (obj == self)
- return YES;
-
- if ([obj isKindOf: [Protocol class]])
- {
- if (strcmp (protocol_name, ((Protocol *)obj)->protocol_name) == 0)
- return YES;
- }
-
- return NO;
-}
@end
-
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