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87 lines
1.9 KiB
Mathematica
87 lines
1.9 KiB
Mathematica
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/* Implementation for Objective-C RBTreeNode objects
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Copyright (C) 1993,1994 Free Software Foundation, Inc.
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Written by: R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
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Date: May 1993
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This file is part of the GNU Objective C Class 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 <objects/RBTreeNode.h>
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@implementation RBTreeNode
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+ initialize
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{
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if (self == [RBTreeNode class])
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[self setVersion:0]; /* beta release */
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return self;
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}
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- init
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{
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[super init];
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_red = YES;
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return self;
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}
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- (void) encodeWithCoder: (Coder*)aCoder
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{
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[super encodeWithCoder:aCoder];
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[aCoder encodeValueOfType:@encode(BOOL) at:&_red withName:"RBTreeNode isRed"];
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}
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+ newWithCoder: (Coder*)aCoder
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{
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RBTreeNode *n = [super newWithCoder:aCoder];
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[aCoder decodeValueOfType:@encode(BOOL) at:&(n->_red) withName:NULL];
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return n;
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}
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- write: (TypedStream*)aStream
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{
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[super write:aStream];
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objc_write_type(aStream, @encode(BOOL), &_red);
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return self;
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}
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- read: (TypedStream*)aStream
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{
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[super read:aStream];
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objc_read_type(aStream, @encode(BOOL), &_red);
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return self;
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}
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- (BOOL) isRed
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{
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return _red;
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}
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- setRed
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{
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_red = YES;
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return self;
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}
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- setBlack
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{
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_red = NO;
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return self;
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}
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@end
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