/*
  Copyright (C) 2000-2003 SKYRIX Software AG

  This file is part of OGo

  OGo is free software; you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the
  Free Software Foundation; either version 2, or (at your option) any
  later version.

  OGo 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 Lesser General Public
  License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with OGo; see the file COPYING.  If not, write to the
  Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  02111-1307, USA.
*/
// $Id$

#import "common.h"
#import "NSSet+enumerator.h"

@implementation NSSet(enumerator)

- (id)initWithObjectsFromEnumerator:(NSEnumerator *)_enumerator {
  NSMutableSet *set = nil;

  set = [[NSMutableSet alloc] initWithObjectsFromEnumerator:_enumerator];
  self = [self initWithSet:set];
  [set release]; set = nil;
  return self;
}

// mapping

- (NSArray *)mappedArrayUsingSelector:(SEL)_selector {
  NSArray *array = nil;
  NSSet   *set   = nil;

  set = [self mappedSetUsingSelector:_selector];
  if (set) {
    array = [[NSArray allocWithZone:[self zone]]
                      initWithObjectsFromEnumerator:[set objectEnumerator]];
  }
  set = nil;
  return [array autorelease];
}
- (NSArray *)mappedArrayUsingSelector:(SEL)_selector withObject:(id)_object {
  NSArray *array = nil;
  NSSet   *set   = nil;

  set = [self mappedSetUsingSelector:_selector withObject:_object];
  if (set) {
    array = [[NSArray allocWithZone:[self zone]]
                      initWithObjectsFromEnumerator:[set objectEnumerator]];
  }
  set = nil;
  return [array autorelease];
}

- (NSSet *)mappedSetUsingSelector:(SEL)_selector {
  NSMutableSet *set   = [NSMutableSet setWithCapacity:[self count]];
  NSEnumerator *e     = [self objectEnumerator];
  id           object = nil;

  while ((object = [e nextObject])) {
    object = [object performSelector:_selector];

    [set addObject:object ? object : [NSNull null]];
  }
  return set;
}
- (NSSet *)mappedSetUsingSelector:(SEL)_selector withObject:(id)_object {
  NSMutableSet *set = [NSMutableSet setWithCapacity:[self count]];
  NSEnumerator *e     = [self objectEnumerator];
  id           object = nil;

  while ((object = [e nextObject])) {
    object = [object performSelector:_selector withObject:_object];

    [set addObject:object ? object : [NSNull null]];
  }
  return set;
}

@end

@implementation NSMutableSet(enumerator) 

- (id)initWithObjectsFromEnumerator:(NSEnumerator *)_enumerator {
  if ((self = [self init])) {
    id obj = nil;
     
    while ((obj = [_enumerator nextObject]))
      [self addObject:obj];
  }
  return self;
}

@end

void __link_NGExtensions_NSSetEnumerator() {
  __link_NGExtensions_NSSetEnumerator();
}