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/**********************************************************************
* $Id$
*
* Name: tif_hash_set.h
* Project: TIFF - Common Portability Library
* Purpose: Hash set functions.
* Author: Even Rouault, <even dot rouault at spatialys.com>
*
**********************************************************************
* Copyright (c) 2008-2009, Even Rouault <even dot rouault at spatialys.com>
*
* 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 and this permission notice 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
****************************************************************************/
#ifndef TIFF_HASH_SET_H_INCLUDED
#define TIFF_HASH_SET_H_INCLUDED
#include <stdbool.h>
/**
* \file tif_hash_set.h
*
* Hash set implementation.
*
* An hash set is a data structure that holds elements that are unique
* according to a comparison function. Operations on the hash set, such as
* insertion, removal or lookup, are supposed to be fast if an efficient
* "hash" function is provided.
*/
#ifdef __cplusplus
extern "C"
{
#endif
/* Types */
/** Opaque type for a hash set */
typedef struct _TIFFHashSet TIFFHashSet;
/** TIFFHashSetHashFunc */
typedef unsigned long (*TIFFHashSetHashFunc)(const void *elt);
/** TIFFHashSetEqualFunc */
typedef bool (*TIFFHashSetEqualFunc)(const void *elt1, const void *elt2);
/** TIFFHashSetFreeEltFunc */
typedef void (*TIFFHashSetFreeEltFunc)(void *elt);
/* Functions */
TIFFHashSet *TIFFHashSetNew(TIFFHashSetHashFunc fnHashFunc,
TIFFHashSetEqualFunc fnEqualFunc,
TIFFHashSetFreeEltFunc fnFreeEltFunc);
void TIFFHashSetDestroy(TIFFHashSet *set);
#ifdef notused
void TIFFHashSetClear(TIFFHashSet *set);
int TIFFHashSetSize(const TIFFHashSet *set);
/** TIFFHashSetIterEltFunc */
typedef int (*TIFFHashSetIterEltFunc)(void *elt, void *user_data);
void TIFFHashSetForeach(TIFFHashSet *set, TIFFHashSetIterEltFunc fnIterFunc,
void *user_data);
#endif
bool TIFFHashSetInsert(TIFFHashSet *set, void *elt);
void *TIFFHashSetLookup(TIFFHashSet *set, const void *elt);
bool TIFFHashSetRemove(TIFFHashSet *set, const void *elt);
#ifdef notused
bool TIFFHashSetRemoveDeferRehash(TIFFHashSet *set, const void *elt);
#endif
#ifdef __cplusplus
}
#endif
#endif /* TIFF_HASH_SET_H_INCLUDED */
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