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kolibrios/programs/develop/libraries/menuetlibc/include/zAVLTree.h

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/*
* zAVLTree.h: Header file for AVLTrees with string keys.
* Copyright (C) 1998 Michael H. Buselli
*
* 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
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* The author of this library can be reached at the following address:
* Michael H. Buselli
* 4334 N. Hazel St. #515
* Chicago, IL 60613-1456
*
* Or you can send email to <cosine@tezcat.com>.
* The official web page for this product is:
* http://www.tezcat.com/~cosine/pub/AVLTree/
*
* This is version 0.1.0 (alpha).
*/
#ifndef _ZAVLTREE_H_
#define _ZAVLTREE_H_
typedef struct _zAVLNode {
const char *key;
long depth;
void *item;
struct _zAVLNode *parent;
struct _zAVLNode *left;
struct _zAVLNode *right;
} zAVLNode;
typedef struct {
zAVLNode *top;
long count;
const char *(*getkey)(const void *item);
} zAVLTree;
typedef struct {
const zAVLTree *avltree;
const zAVLNode *curnode;
} zAVLCursor;
extern zAVLTree *zAVLAllocTree (const char *(*getkey)(void const *item));
extern void zAVLFreeTree (zAVLTree *avltree, void (freeitem)(void *item));
extern int zAVLInsert (zAVLTree *avltree, void *item);
extern void *zAVLSearch (zAVLTree const *avltree, const char *key);
extern int zAVLDelete (zAVLTree *avltree, const char *key);
extern void *zAVLFirst (zAVLCursor *avlcursor, zAVLTree const *avltree);
extern void *zAVLNext (zAVLCursor *avlcursor);
#endif