ftp.nice.ch/Attic/openStep/implementation/gnustep/sources/gstep-base-0.2.7.tgz#/gstep-base-0.2.7/src/RBTreeNode.m

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/* Implementation for Objective-C RBTreeNode objects
   Copyright (C) 1993,1994, 1995, 1996 Free Software Foundation, Inc.

   Written by:  Andrew Kachites McCallum <mccallum@gnu.ai.mit.edu>
   Date: May 1993

   This file is part of the GNUstep Base 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 <gnustep/base/RBTreeNode.h>
#include <gnustep/base/NSString.h>

@implementation RBTreeNode

+ (void) initialize
{
  if (self == [RBTreeNode class])
    [self setVersion:0];	/* beta release */
}

- init
{
  [super init];
  _red = YES;
  return self;
}

- (void) encodeWithCoder: aCoder
{
  [super encodeWithCoder:aCoder];
  [aCoder encodeValueOfObjCType:@encode(BOOL) at:&_red withName:@"RBTreeNode isRed"];
}

- initWithCoder: aCoder
{
  [self initWithCoder:aCoder];
  [aCoder decodeValueOfObjCType:@encode(BOOL) at:&_red withName:NULL];
  return self;
}

- write: (TypedStream*)aStream
{
  [super write:aStream];
  objc_write_type(aStream, @encode(BOOL), &_red);
  return self;
}

- read: (TypedStream*)aStream
{
  [super read:aStream];
  objc_read_type(aStream, @encode(BOOL), &_red);
  return self;
}

- (BOOL) isRed
{
  return _red;
}

- setRed
{
  _red = YES;
  return self;
}

- setBlack
{
  _red = NO;
  return self;
}

@end

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