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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2013. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifndef __ERL_MAP_H__
#define __ERL_MAP_H__
#include "sys.h"
/* MAP */
typedef struct map_s {
Eterm thing_word;
Uint size;
Eterm keys; /* tuple */
} map_t;
/* map node
*
* -----------
* Eterm THING
* Uint size
* Eterm Keys -> {K1, K2, K3, ..., Kn} where n = size
* ----
* Eterm V1
* ...
* Eterm Vn, where n = size
* -----------
*/
/* erl_term.h stuff */
#define make_map(x) make_boxed((Eterm*)(x))
#define make_map_rel(x, BASE) make_boxed_rel((Eterm*)(x),(BASE))
#define is_map(x) (is_boxed((x)) && is_map_header(*boxed_val((x))))
#define is_map_rel(RTERM,BASE) is_map(rterm2wterm(RTERM,BASE))
#define is_not_map(x) (!is_map((x)))
#define is_map_header(x) (((x) & (_TAG_HEADER_MASK)) == _TAG_HEADER_MAP)
#define header_is_map(x) ((((x) & (_HEADER_SUBTAG_MASK)) == MAP_SUBTAG))
#define map_val(x) (_unchecked_boxed_val((x)))
#define map_val_rel(RTERM, BASE) map_val(rterm2wterm(RTERM, BASE))
#define map_get_values(x) (((Eterm *)(x)) + 3)
#define map_get_keys(x) (((Eterm *)tuple_val(((map_t *)(x))->keys)) + 1)
#define map_get_size(x) (((map_t*)(x))->size)
#define MAP_HEADER _make_header(1,_TAG_HEADER_MAP)
#define MAP_HEADER_SIZE (sizeof(map_t) / sizeof(Eterm))
#endif
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