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/* Interface for Objective-C BinaryTree collection object
Copyright (C) 1993 Free Software Foundation, Inc.
Written by: R. Andrew McCallum <mccallum@cs.rochester.edu>
Dept. of Computer Science, U. of Rochester, Rochester, NY 14627
This file is part of the GNU Objective-C Collection 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.
*/
/*
Binary Tree.
Base class for smarter binary trees.
*/
#ifndef __BinaryTree_h_INCLUDE_GNU
#define __BinaryTree_h_INCLUDE_GNU
#include <coll/IndexedCollection.h>
/* The <BinaryTreeComprising> protocol defines the interface to an object
that may be an element in a BinaryTree.
*/
@protocol BinaryTreeComprising
- leftNode;
- rightNode;
- parentNode;
- setLeftNode: (id <BinaryTreeComprising>)aNode;
- setRightNode: (id <BinaryTreeComprising>)aNode;
- setParentNode: (id <BinaryTreeComprising>)aNode;
@end
@interface BinaryTree : IndexedCollection
{
unsigned int _count;
id _contents_root;
}
- leftmostNodeFromNode: aNode;
- rightmostNodeFromNode: aNode;
- (unsigned) depthOfNode: aNode;
- (unsigned) heightOfNode: aNode;
- (unsigned) nodeCountUnderNode: aNode;
- leftRotateAroundNode: aNode;
- rightRotateAroundNode: aNode;
- (BOOL) nodeIsLeftNode: aNode;
- (BOOL) nodeIsRightNode: aNode;
@end
#endif /* __BinaryTree_h_INCLUDE_GNU */
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