/*
 * hashmap.h 
 * Copyright (c) 2009 Vedant Kumar
 * 
 * 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.
 */

#pragma once

#define HMAP_PRESET_SIZE 	2 << 6 // use a power of 2 for faster array access
#define HMAP_GROWTH_RATE 	2
/* #define HMAP_MAKE_HASHFN */
/* #define HMAP_THREAD_SAFE 	// build with -lrt */
/* #define HMAP_DESTRUCTORS */

#ifdef HMAP_THREAD_SAFE
	#include <semaphore.h>
#endif

#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>

typedef void* key;
typedef void* val;
typedef struct key_val_map key_val_map;
typedef struct hashmap hashmap;

hashmap* mk_hmap(uint32_t (*hash_fn)(key),
                 bool (*eq_fn)(key, key)
#ifdef HMAP_DESTRUCTORS
                 , void (*del_fn)(val)
#endif
    );
			
void free_hmap(hashmap*);

bool __hmap_add(hashmap* hmap, key in, val out);
#define hmap_add(hmap, in, out) __hmap_add(hmap, (key) in, (val) out)

val __hmap_get(hashmap* hmap, key in);
#define hmap_get(hmap, obj) __hmap_get(hmap, (val) obj)