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/* -*- Mode: C; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2012 Couchbase, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LIBCOUCHBASE_HASHSET_H
#define LIBCOUCHBASE_HASHSET_H 1
#ifdef __cplusplus
extern "C" {
#endif
struct hashset_st {
lcb_size_t nbits;
lcb_size_t mask;
lcb_size_t capacity;
lcb_size_t *items;
lcb_size_t nitems;
};
typedef struct hashset_st *hashset_t;
/* create hashset instance */
hashset_t hashset_create(void);
/* destroy hashset instance */
void hashset_destroy(hashset_t set);
lcb_size_t hashset_num_items(hashset_t set);
/* add item into the hashset.
*
* @note 0 and 1 is special values, meaning nil and deleted items. the
* function will return -1 indicating error.
*
* returns zero if the item already in the set and non-zero otherwise
*/
int hashset_add(hashset_t set, void *item);
/* remove item from the hashset
*
* returns non-zero if the item was removed and zero if the item wasn't
* exist
*/
int hashset_remove(hashset_t set, void *item);
/* check if existence of the item
*
* returns non-zero if the item exists and zero otherwise
*/
int hashset_is_member(hashset_t set, void *item);
#ifdef __cplusplus
}
#endif
#endif
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