#ifndef _HASHTABLE_H_
#define _HASHTABLE_H_

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

#define TABLESIZE (1<<20)

typedef uint64_t (*HashFunc)(const void*);
typedef bool (*EqualFunc)(const void*, const void*);
typedef void (*FreeFunc)(void*);
typedef void (*PrintFunc)(void*);
typedef struct _Hashtable Hashtable;
typedef void (*ForeachFunc)(void*, void*, void*);

typedef struct _HashtableIter {
	/* Private */
	void* dummy1;
	void* dummy2;
	void* dummy3;
	int64_t dummy4;
} HashtableIter;


typedef struct _List {
	void* data;
	struct _List* next;
} List;


uint64_t int_hash(const void*);
uint64_t str_hash(const void*);
uint64_t ptr_hash(const void*);
bool int_equal(const void*, const void*);
bool str_equal(const void*, const void*);
bool ptr_equal(const void*, const void*);

Hashtable* hash_table_create(HashFunc hf, EqualFunc ef);
Hashtable* hash_table_create_notify(HashFunc hf, EqualFunc ef, FreeFunc ff);
Hashtable* hash_table_create_full(HashFunc hf, EqualFunc ef, uint32_t size, FreeFunc ff, PrintFunc pf);
void hash_table_destroy(Hashtable* ht);
void hash_table_print(Hashtable* ht);
bool hash_table_insert(Hashtable* ht, const void* key, void* obj);
void* hash_table_lookup(Hashtable* ht, const void* key);
void* hash_table_delete(Hashtable* ht, const void* key);
List* hash_table_keys(Hashtable* ht);
List* hash_table_values(Hashtable* ht);
void hash_table_list_free(List* list);
void hash_table_foreach(Hashtable* ht, ForeachFunc, void* userdata);
void hash_table_iter_init(HashtableIter* iter, Hashtable* ht);
bool hash_table_iter_next(HashtableIter* iter, void** key, void** value);
bool hash_table_contains(Hashtable* ht, const void* key);
uint64_t hash_table_size(Hashtable* ht);
bool hash_table_replace(Hashtable* ht, void* key, void* value);
void hash_table_set_print_func(Hashtable* ht, PrintFunc pf);

#endif