#ifndef SKIPLIST_H
#define SKIPLIST_H

#include "map.h"

typedef struct sl skiplist_t;
typedef struct sl_iter sl_iter_t;

skiplist_t * sl_alloc (const datatype_t *key_type);
map_val_t  sl_cas     (skiplist_t *sl, map_key_t key, map_val_t expected_val, map_val_t new_val);
map_val_t  sl_lookup  (skiplist_t *sl, map_key_t key);
map_val_t  sl_remove  (skiplist_t *sl, map_key_t key);
size_t     sl_count   (skiplist_t *sl);
void       sl_print   (skiplist_t *sl, int verbose);
void       sl_free    (skiplist_t *sl);
map_key_t  sl_min_key (skiplist_t *sl);

sl_iter_t * sl_iter_begin (skiplist_t *sl, map_key_t key);
map_val_t   sl_iter_next  (sl_iter_t *iter, map_key_t *key_ptr);
void        sl_iter_free  (sl_iter_t *iter);

static const map_impl_t MAP_IMPL_SL = { 
    (map_alloc_t)sl_alloc, (map_cas_t)sl_cas, (map_get_t)sl_lookup, (map_remove_t)sl_remove, 
    (map_count_t)sl_count, (map_print_t)sl_print, (map_free_t)sl_free, (map_iter_begin_t)sl_iter_begin,
    (map_iter_next_t)sl_iter_next, (map_iter_free_t)sl_iter_free
};

#endif//SKIPLIST_H