mirror of
https://github.com/jerryscript-project/jerryscript.git
synced 2025-12-15 16:29:21 +00:00
47f2f0ea8b
ECMA_GET_POINTER is removed from:
- property list iteration
- lexical environment chain iteration
- prototype chain iteration
For all these iteration the compressed pointer can be used to get the elements and only decompressed them if it is necessary.
- Properly guard ecma property hashmap routines
- Remove the redundant NULL pointer check from ecma_create_property
- Remove ecma_gc_get_object_next since it became unnecessary
- Substitute ECMA_{GET,SET}_POINTER with ECMA_{GET,SET}_NON_NULL pointer when we can assume the pointer is not NULL
- Remove ecma_get_object_prototype and ecma_get_lex_env_outer_reference helper function the reduce the number of NULL pointer checks during decompressing the pointers
- Remove ecma_get_named_accessor_property_{getter,setter} helper functions for also reduce the number of NULL pointer check/decompressions
- Remove ECMA_PROPERTY_SEARCH_DEPTH_LIMIT since in ES5 there is no way to create circular prototype chain, and the ES2015 setPrototypeOf method can resolve this error so this check during the property lookup can be eliminated.
JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef ECMA_PROPERTY_HASHMAP_H
|
|
#define ECMA_PROPERTY_HASHMAP_H
|
|
|
|
/** \addtogroup ecma ECMA
|
|
* @{
|
|
*
|
|
* \addtogroup ecmapropertyhashmap Property hashmap
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* Recommended minimum number of items in a property cache.
|
|
*/
|
|
#define ECMA_PROPERTY_HASMAP_MINIMUM_SIZE 32
|
|
|
|
/**
|
|
* Property hash.
|
|
*/
|
|
typedef struct
|
|
{
|
|
ecma_property_header_t header; /**< header of the property */
|
|
uint32_t max_property_count; /**< maximum property count (power of 2) */
|
|
uint32_t null_count; /**< number of NULLs in the map */
|
|
uint32_t unused_count; /**< number of unused entires in the map */
|
|
|
|
/*
|
|
* The hash is followed by max_property_count ecma_cpointer_t
|
|
* compressed pointers and (max_property_count + 7) / 8 bytes
|
|
* which stores a flag for each compressed pointer.
|
|
*
|
|
* If the compressed pointer is equal to ECMA_NULL_POINTER
|
|
* - flag is cleared if the entry is NULL
|
|
* - flag is set if the entry is deleted
|
|
*
|
|
* If the compressed pointer is not equal to ECMA_NULL_POINTER
|
|
* - flag is cleared if the first entry of a property pair is referenced
|
|
* - flag is set if the second entry of a property pair is referenced
|
|
*/
|
|
} ecma_property_hashmap_t;
|
|
|
|
#if ENABLED (JERRY_PROPRETY_HASHMAP)
|
|
|
|
/**
|
|
* Simple ecma values
|
|
*/
|
|
typedef enum
|
|
{
|
|
ECMA_PROPERTY_HASHMAP_DELETE_NO_HASHMAP, /**< object has no hashmap */
|
|
ECMA_PROPERTY_HASHMAP_DELETE_HAS_HASHMAP, /**< object has hashmap */
|
|
ECMA_PROPERTY_HASHMAP_DELETE_RECREATE_HASHMAP, /**< hashmap should be recreated */
|
|
} ecma_property_hashmap_delete_status;
|
|
|
|
void ecma_property_hashmap_create (ecma_object_t *object_p);
|
|
void ecma_property_hashmap_free (ecma_object_t *object_p);
|
|
void ecma_property_hashmap_insert (ecma_object_t *object_p, ecma_string_t *name_p,
|
|
ecma_property_pair_t *property_pair_p, int property_index);
|
|
ecma_property_hashmap_delete_status ecma_property_hashmap_delete (ecma_object_t *object_p, jmem_cpointer_t name_cp,
|
|
ecma_property_t *property_p);
|
|
|
|
|
|
ecma_property_t *ecma_property_hashmap_find (ecma_property_hashmap_t *hashmap_p, ecma_string_t *name_p,
|
|
jmem_cpointer_t *property_real_name_cp);
|
|
#endif /* ENABLED (JERRY_PROPRETY_HASHMAP) */
|
|
|
|
/**
|
|
* @}
|
|
* @}
|
|
*/
|
|
|
|
#endif /* !ECMA_PROPERTY_HASHMAP_H */
|