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/*-*- Mode: C; c-basic-offset: 8 -*-*/
#ifndef foosethfoo
#define foosethfoo
/* Pretty straightforward set implementation. Internally based on the
* hashmap. That means that as a minor optimization a NULL set
* object will be treated as empty set for all read
* operations. That way it is not necessary to instantiate an object
* for each set use. */
#include "hashmap.h"
typedef struct Set Set;
Set *set_new(hash_func_t hash_func, compare_func_t compare_func);
void set_free(Set* set);
int set_put(Set *s, void *value);
void *set_get(Set *s, void *value);
void *set_remove(Set *s, void *value);
unsigned set_size(Set *s);
bool set_isempty(Set *s);
void *set_iterate(Set *h, void **state);
void *set_iterate_backwards(Set *h, void **state);
void *set_steal_first(Set *h);
void* set_first(Set *h);
void* set_last(Set *h);
#define SET_FOREACH(e, s, state) \
for ((state) = NULL, (e) = set_iterate((s), &(state)); (e); (e) = set_iterate((s), &(state)))
#define SET_FOREACH_BACKWARDS(e, s, state) \
for ((state) = NULL, (e) = set_iterate_backwards((s), &(state)); (e); (e) = set_iterate_backwards((s), &(state)))
#endif
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