/**
* Find named data property or named access property in specified object.
*
* @return pointer to the property, if it is found,
* NULL - otherwise.
*/
ecma_property_t *
ecma_find_named_property (ecma_object_t *obj_p, /**< object to find property in */
ecma_string_t *name_p) /**< property's name */
{
JERRY_ASSERT (obj_p != NULL);
JERRY_ASSERT (name_p != NULL);
ecma_property_t *property_p;
if (ecma_lcache_lookup (obj_p, name_p, &property_p))
{
return property_p;
}
property_p = NULL;
ecma_property_header_t *prop_iter_p = ecma_get_property_list (obj_p);
while (prop_iter_p != NULL)
{
JERRY_ASSERT (ECMA_PROPERTY_IS_PROPERTY_PAIR (prop_iter_p));
ecma_property_pair_t *prop_pair_p = (ecma_property_pair_t *) prop_iter_p;
JERRY_ASSERT (ECMA_PROPERTY_PAIR_ITEM_COUNT == 2);
if (prop_pair_p->names_cp[0] != ECMA_NULL_POINTER)
{
ecma_string_t *property_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
prop_pair_p->names_cp[0]);
if (ecma_compare_ecma_strings (name_p, property_name_p))
{
property_p = prop_iter_p->types + 0;
break;
}
}
if (prop_pair_p->names_cp[1] != ECMA_NULL_POINTER)
{
ecma_string_t *property_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
prop_pair_p->names_cp[1]);
if (ecma_compare_ecma_strings (name_p, property_name_p))
{
property_p = prop_iter_p->types + 1;
break;
}
}
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
ecma_lcache_insert (obj_p, name_p, property_p);
return property_p;
} /* ecma_find_named_property */
/**
* [[GetOwnProperty]] ecma object's operation
*
* See also:
* ECMA-262 v5, 8.6.2; ECMA-262 v5, Table 8
*
* @return pointer to a property - if it exists,
* NULL (i.e. ecma-undefined) - otherwise.
*/
ecma_property_t*
ecma_op_object_get_own_property (ecma_object_t *obj_p, /**< the object */
ecma_string_t *property_name_p) /**< property name */
{
JERRY_ASSERT (obj_p != NULL
&& !ecma_is_lexical_environment (obj_p));
JERRY_ASSERT (property_name_p != NULL);
ecma_property_t *prop_p = NULL;
if (likely (ecma_lcache_lookup (obj_p, property_name_p, &prop_p)))
{
return prop_p;
}
else
{
return ecma_op_object_get_own_property_longpath (obj_p, property_name_p);
}
} /* ecma_op_object_get_own_property */
/**
* Resolve value corresponding to reference.
*
* @return value of the reference
*/
ecma_value_t
ecma_op_resolve_reference_value (ecma_object_t *lex_env_p, /**< starting lexical environment */
ecma_string_t *name_p) /**< identifier's name */
{
JERRY_ASSERT (lex_env_p != NULL);
while (lex_env_p != NULL)
{
ecma_lexical_environment_type_t lex_env_type = ecma_get_lex_env_type (lex_env_p);
if (lex_env_type == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE)
{
ecma_property_t *property_p = ecma_find_named_property (lex_env_p, name_p);
if (property_p != NULL)
{
return ecma_fast_copy_value (ECMA_PROPERTY_VALUE_PTR (property_p)->value);
}
}
else if (lex_env_type == ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND)
{
ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
#ifndef CONFIG_ECMA_LCACHE_DISABLE
ecma_property_t *property_p = ecma_lcache_lookup (binding_obj_p, name_p);
if (property_p != NULL)
{
ecma_property_value_t *prop_value_p = ECMA_PROPERTY_VALUE_PTR (property_p);
if (ECMA_PROPERTY_GET_TYPE (*property_p) == ECMA_PROPERTY_TYPE_NAMEDDATA)
{
return ecma_fast_copy_value (prop_value_p->value);
}
JERRY_ASSERT (ECMA_PROPERTY_GET_TYPE (*property_p) == ECMA_PROPERTY_TYPE_NAMEDACCESSOR);
ecma_object_t *getter_p = ecma_get_named_accessor_property_getter (prop_value_p);
if (getter_p == NULL)
{
return ECMA_VALUE_UNDEFINED;
}
ecma_value_t base_value = ecma_make_object_value (binding_obj_p);
return ecma_op_function_call (getter_p, base_value, NULL, 0);
}
#endif /* !CONFIG_ECMA_LCACHE_DISABLE */
ecma_value_t prop_value = ecma_op_object_find (binding_obj_p, name_p);
if (ecma_is_value_found (prop_value))
{
return prop_value;
}
}
else
{
#if ENABLED (JERRY_ES2015_CLASS)
JERRY_ASSERT (lex_env_type == ECMA_LEXICAL_ENVIRONMENT_SUPER_OBJECT_BOUND);
#else /* !ENABLED (JERRY_ES2015_CLASS) */
JERRY_UNREACHABLE ();
#endif /* ENABLED (JERRY_ES2015_CLASS) */
}
lex_env_p = ecma_get_lex_env_outer_reference (lex_env_p);
}
#ifdef JERRY_ENABLE_ERROR_MESSAGES
ecma_value_t name_val = ecma_make_string_value (name_p);
ecma_value_t error_value = ecma_raise_standard_error_with_format (ECMA_ERROR_REFERENCE,
"% is not defined",
name_val);
#else /* !JERRY_ENABLE_ERROR_MESSAGES */
ecma_value_t error_value = ecma_raise_reference_error (NULL);
#endif /* JERRY_ENABLE_ERROR_MESSAGES */
return error_value;
} /* ecma_op_resolve_reference_value */
/**
* Find named data property or named access property in specified object.
*
* @return pointer to the property, if it is found,
* NULL - otherwise.
*/
ecma_property_t *
ecma_find_named_property (ecma_object_t *obj_p, /**< object to find property in */
ecma_string_t *name_p) /**< property's name */
{
JERRY_ASSERT (obj_p != NULL);
JERRY_ASSERT (name_p != NULL);
ecma_property_t *property_p = ecma_lcache_lookup (obj_p, name_p);
if (property_p != NULL)
{
return property_p;
}
ecma_property_header_t *prop_iter_p = ecma_get_property_list (obj_p);
#ifndef CONFIG_ECMA_PROPERTY_HASHMAP_DISABLE
if (prop_iter_p != NULL
&& ECMA_PROPERTY_GET_TYPE (prop_iter_p->types + 0) == ECMA_PROPERTY_TYPE_HASHMAP)
{
ecma_string_t *property_real_name_p;
property_p = ecma_property_hashmap_find ((ecma_property_hashmap_t *) prop_iter_p,
name_p,
&property_real_name_p);
if (property_p != NULL
&& !ecma_is_property_lcached (property_p))
{
ecma_lcache_insert (obj_p, property_real_name_p, property_p);
}
return property_p;
}
#endif /* !CONFIG_ECMA_PROPERTY_HASHMAP_DISABLE */
property_p = NULL;
ecma_string_t *property_name_p = NULL;
uint32_t steps = 0;
while (prop_iter_p != NULL)
{
JERRY_ASSERT (ECMA_PROPERTY_IS_PROPERTY_PAIR (prop_iter_p));
ecma_property_pair_t *prop_pair_p = (ecma_property_pair_t *) prop_iter_p;
JERRY_ASSERT (ECMA_PROPERTY_PAIR_ITEM_COUNT == 2);
if (prop_pair_p->names_cp[0] != ECMA_NULL_POINTER)
{
property_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
prop_pair_p->names_cp[0]);
if (ecma_compare_ecma_strings (name_p, property_name_p))
{
property_p = prop_iter_p->types + 0;
break;
}
}
if (prop_pair_p->names_cp[1] != ECMA_NULL_POINTER)
{
property_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
prop_pair_p->names_cp[1]);
if (ecma_compare_ecma_strings (name_p, property_name_p))
{
property_p = prop_iter_p->types + 1;
break;
}
}
steps++;
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
if (steps > (ECMA_PROPERTY_HASMAP_MINIMUM_SIZE / 4))
{
ecma_property_hashmap_create (obj_p);
}
if (property_p != NULL
&& !ecma_is_property_lcached (property_p))
{
ecma_lcache_insert (obj_p, property_name_p, property_p);
}
return property_p;
} /* ecma_find_named_property */