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Fr4nz D13trich 2025-11-22 13:58:55 +01:00
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3party/libtess2/Source/dict.h Normal file
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/*
** SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
** Copyright (C) [dates of first publication] Silicon Graphics, Inc.
** All Rights Reserved.
**
** Permission is hereby granted, free of charge, to any person obtaining a copy
** of this software and associated documentation files (the "Software"), to deal
** in the Software without restriction, including without limitation the rights
** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
** of the Software, and to permit persons to whom the Software is furnished to do so,
** subject to the following conditions:
**
** The above copyright notice including the dates of first publication and either this
** permission notice or a reference to http://oss.sgi.com/projects/FreeB/ shall be
** included in all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
** INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
** PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL SILICON GRAPHICS, INC.
** BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
** OR OTHER DEALINGS IN THE SOFTWARE.
**
** Except as contained in this notice, the name of Silicon Graphics, Inc. shall not
** be used in advertising or otherwise to promote the sale, use or other dealings in
** this Software without prior written authorization from Silicon Graphics, Inc.
*/
/*
** Author: Eric Veach, July 1994.
*/
#ifndef DICT_LIST_H
#define DICT_LIST_H
typedef void *DictKey;
typedef struct Dict Dict;
typedef struct DictNode DictNode;
Dict *dictNewDict( TESSalloc* alloc, void *frame, int (*leq)(void *frame, DictKey key1, DictKey key2) );
void dictDeleteDict( TESSalloc* alloc, Dict *dict );
/* Search returns the node with the smallest key greater than or equal
* to the given key. If there is no such key, returns a node whose
* key is NULL. Similarly, Succ(Max(d)) has a NULL key, etc.
*/
DictNode *dictSearch( Dict *dict, DictKey key );
DictNode *dictInsertBefore( Dict *dict, DictNode *node, DictKey key );
void dictDelete( Dict *dict, DictNode *node );
#define dictKey(n) ((n)->key)
#define dictSucc(n) ((n)->next)
#define dictPred(n) ((n)->prev)
#define dictMin(d) ((d)->head.next)
#define dictMax(d) ((d)->head.prev)
#define dictInsert(d,k) (dictInsertBefore((d),&(d)->head,(k)))
/*** Private data structures ***/
struct DictNode {
DictKey key;
DictNode *next;
DictNode *prev;
};
struct Dict {
DictNode head;
void *frame;
struct BucketAlloc *nodePool;
int (*leq)(void *frame, DictKey key1, DictKey key2);
};
#endif