collections.h
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collections.h
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	#ifndef COLLECTIONS_H
	#define COLLECTIONS_H

	#include <uthash.h>
	#include "types.h"
	#include "gc.h"

	typedef struct map_entry {
	char *key;
	jsval_t value;
	UT_hash_handle hh;
	} map_entry_t;

	typedef struct set_entry {
	jsval_t value;
	char *key;
	UT_hash_handle hh;
	} set_entry_t;

	typedef struct weakmap_entry {
	jsval_t key_obj;
	jsval_t value;
	UT_hash_handle hh;
	} weakmap_entry_t;

	typedef struct weakset_entry {
	jsval_t value_obj;
	UT_hash_handle hh;
	} weakset_entry_t;

	typedef enum {
	ITER_TYPE_MAP_VALUES,
	ITER_TYPE_MAP_KEYS,
	ITER_TYPE_MAP_ENTRIES,
	ITER_TYPE_SET_VALUES,
	ITER_TYPE_SET_ENTRIES
	} iter_type_t;

	typedef struct map_iterator_state {
	map_entry_t **head;
	map_entry_t *current;
	iter_type_t type;
	} map_iterator_state_t;

	typedef struct set_iterator_state {
	set_entry_t **head;
	set_entry_t *current;
	iter_type_t type;
	} set_iterator_state_t;

	typedef struct map_registry_entry {
	map_entry_t **head;
	jsoff_t obj_offset;
	} map_registry_entry_t;

	typedef struct set_registry_entry {
	set_entry_t **head;
	jsoff_t obj_offset;
	} set_registry_entry_t;

	void init_collections_module(void);
	void cleanup_collections_module(void);
	size_t collections_get_external_memory(void);

	void collections_gc_reserve_roots(GC_OP_VAL_ARGS);
	void collections_gc_update_roots(jsoff_t (weak_off)(void ctx, jsoff_t old), GC_OP_VAL_ARGS);

	map_entry_t *get_map_from_obj(ant_t js, jsval_t obj);
	set_entry_t *get_set_from_obj(ant_t js, jsval_t obj);

	#endif