ftp.nice.ch/Attic/openStep/implementation/gnustep/sources/libobjects-0.1.19.tgz#/libobjects-0.1.19/src/NSGSet.m

This is NSGSet.m in view mode; [Download] [Up]

/* Concrete implementation of NSSet based on GNU Set class
   Copyright (C) 1995 Free Software Foundation, Inc.
   
   Written by:  R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
   Created: Sep 1995
   
   This file is part of the GNU Objective C Class Library.
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library 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
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   */

#include <Foundation/NSGSet.h>
#include <objects/NSSet.h>
#include <objects/behavior.h>
#include <objects/Set.h>
#include <objects/eltfuncs.h>
#include <Foundation/NSUtilities.h>
#include <Foundation/NSString.h>

@interface NSGSetEnumerator : NSEnumerator
{
  NSSet *set;
  void *enum_state;
}
@end

@implementation NSGSetEnumerator

- initWithSet: (NSSet*)d
{
  [super init];
  set = d;
  [set retain];
  enum_state = 0;
  return self;
}

- nextObject
{
  elt e;
  if ([set getNextElement:&e withEnumState:&enum_state])
    return e.id_u;
  else
    return nil;
}

- (void) dealloc
{
  [set release];
  [super dealloc];
}

@end


@implementation NSGSet

+ (void) initialize
{
  static int done = 0;

  if (!done)
    {
      done = 1;
      class_add_behavior([NSGSet class], [Set class]);
    }
}


/* This is the designated initializer */
- initWithObjects: (id*)objects
	    count: (unsigned)count
{
  [self initWithType:@encode(id)
	capacity:count];
  while (count--)
    [self addObject:objects[count]];
  return self;
}

- member: anObject
{
  return coll_hash_value_for_key(_contents_hash, anObject).id_u;
}

- (NSEnumerator*) objectEnumerator
{
  return [[[NSGSetEnumerator alloc] initWithSet:self]
	  autorelease];
}

/* To deal with behavior over-enthusiasm.  Will be fixed later. */
- (BOOL) isEqual: other
{
  return [super isEqual:other];
}
@end

@implementation NSGMutableSet

+ (void) initialize
{
  static int done = 0;

  if (!done)
    {
      done = 1;
      class_add_behavior([NSGMutableSet class], [NSGSet class]);
    }
}

/* This is the designated initializer */
- initWithCapacity: (unsigned)numItems
{
  return [self initWithType:@encode(id)
	       capacity:numItems];
}

- (void) addObject: anObject
{
  [self addElement:anObject];
}

- (void) removeAllObjects
{
  [self empty];
}

- (void) removeObject: anObject
{
  [self removeElement:anObject];
}

/* To deal with behavior over-enthusiasm.  Will be fixed later. */
- (BOOL) isEqual: other
{
  return [super isEqual:other];
}

@end

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.