76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#ifndef NUVIE_MISC_IAVL_TREE_H
|
|
#define NUVIE_MISC_IAVL_TREE_H
|
|
|
|
namespace Ultima {
|
|
namespace Nuvie {
|
|
|
|
/* typedef the keytype */
|
|
// TODO: Clean up object manager so it isn't intermixing pointers and ints
|
|
//typedef long iAVLKey;
|
|
union iAVLKey {
|
|
void *_ptr;
|
|
long _int;
|
|
};
|
|
|
|
/* Comparison function for integers is subtraction. */
|
|
#define iAVLKey_cmp(tree, a, b) ((a._int) - (b._int))
|
|
|
|
|
|
typedef struct _iAVLNode {
|
|
iAVLKey key;
|
|
long depth;
|
|
void *item;
|
|
struct _iAVLNode *parent;
|
|
struct _iAVLNode *left;
|
|
struct _iAVLNode *right;
|
|
} iAVLNode;
|
|
|
|
|
|
typedef struct {
|
|
iAVLNode *top;
|
|
long count;
|
|
iAVLKey(*getkey)(const void *item);
|
|
} iAVLTree;
|
|
|
|
|
|
typedef struct {
|
|
const iAVLTree *avltree;
|
|
const iAVLNode *curnode;
|
|
} iAVLCursor;
|
|
|
|
|
|
extern iAVLTree *iAVLAllocTree(iAVLKey(*getkey)(void const *item));
|
|
extern void iAVLFreeTree(iAVLTree *avltree, void (freeitem)(void *item));
|
|
extern void iAVLCleanTree(iAVLTree *avltree, void (freeitem)(void *item));
|
|
extern int iAVLInsert(iAVLTree *avltree, void *item);
|
|
extern void *iAVLSearch(iAVLTree const *avltree, iAVLKey key);
|
|
extern int iAVLDelete(iAVLTree *avltree, iAVLKey key);
|
|
extern void *iAVLFirst(iAVLCursor *avlcursor, iAVLTree const *avltree);
|
|
extern void *iAVLNext(iAVLCursor *avlcursor);
|
|
|
|
} // End of namespace Nuvie
|
|
} // End of namespace Ultima
|
|
|
|
#endif
|