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168f431ba9
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1521 72102866-910b-0410-8b05-ffd578937521
142 lines
3 KiB
Objective-C
142 lines
3 KiB
Objective-C
/* Concrete implementation of NSSet based on GNU Set class
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Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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Written by: Andrew Kachites McCallum <mccallum@gnu.ai.mit.edu>
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Created: September 1995
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This file is part of the GNUstep Base Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <Foundation/NSGSet.h>
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#include <gnustep/base/NSSet.h>
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#include <gnustep/base/behavior.h>
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#include <gnustep/base/Set.h>
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#include <Foundation/NSUtilities.h>
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#include <Foundation/NSString.h>
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@interface NSGSetEnumerator : NSEnumerator
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{
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NSSet *set;
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void *enum_state;
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}
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@end
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@implementation NSGSetEnumerator
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- initWithSet: (NSSet*)d
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{
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[super init];
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set = d;
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[set retain];
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enum_state = [set newEnumState];
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return self;
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}
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- nextObject
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{
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return [set nextObjectWithEnumState: &enum_state];
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}
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- (void) dealloc
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{
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[set release];
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[super dealloc];
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}
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@end
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@implementation NSGSet
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+ (void) initialize
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{
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static int done = 0;
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if (!done)
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{
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done = 1;
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class_add_behavior([NSGSet class], [Set class]);
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}
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}
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/* This is the designated initializer
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- initWithObjects: (id*)objects
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count: (unsigned)count
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Implemented by behavior. */
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- member: anObject
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{
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return ([self containsObject: anObject] ? anObject : nil);
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}
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- (NSEnumerator*) objectEnumerator
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{
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return [[[NSGSetEnumerator alloc] initWithSet:self]
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autorelease];
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}
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/* To deal with behavior over-enthusiasm. Will be fixed later. */
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- (BOOL) isEqual: other
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{
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#if 1
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return [self isEqualToSet: other];
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#else
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/* xxx What is the correct behavior here?
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If we end up calling [NSSet -isEqualToSet:] we end up in
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an infinite loop, since that method enumerates the set, and
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the set enumerator asks if things are equal...
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[Huh? What am I saying here?] */
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return (self == other);
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#endif
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}
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@end
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@implementation NSGMutableSet
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+ (void) initialize
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{
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static int done = 0;
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if (!done)
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{
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done = 1;
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class_add_behavior([NSGMutableSet class], [NSGSet class]);
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}
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}
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/* This is the designated initializer
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- initWithCapacity: (unsigned)numItems
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implemented by behavior. */
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/* Implemented by behavior:
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- (void) addObject: newObject;
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- (void) removeObject: anObject
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*/
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- (void) removeAllObjects
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{
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[self empty];
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}
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/* To deal with behavior over-enthusiasm. Will be fixed later. */
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- (BOOL) isEqual: other
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{
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return [super isEqual:other];
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}
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@end
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