/**
* Delete the object's property.
*
* Warning: specified property must be owned by specified object.
*/
void
ecma_delete_property (ecma_object_t *object_p, /**< object */
ecma_property_t *prop_p) /**< property */
{
ecma_property_header_t *cur_prop_p = ecma_get_property_list (object_p);
ecma_property_header_t *prev_prop_p = NULL;
while (true)
{
JERRY_ASSERT (cur_prop_p != NULL);
JERRY_ASSERT (ECMA_PROPERTY_IS_PROPERTY_PAIR (cur_prop_p));
ecma_property_pair_t *prop_pair_p = (ecma_property_pair_t *) cur_prop_p;
for (int i = 0; i < ECMA_PROPERTY_PAIR_ITEM_COUNT; i++)
{
if ((cur_prop_p->types + i) == prop_p)
{
ecma_string_t *name_p = ECMA_GET_POINTER (ecma_string_t, prop_pair_p->names_cp[i]);
ecma_free_property (object_p, name_p, cur_prop_p->types + i);
prop_pair_p->names_cp[i] = ECMA_NULL_POINTER;
if (name_p != NULL)
{
ecma_deref_ecma_string (name_p);
}
JERRY_ASSERT (ECMA_PROPERTY_PAIR_ITEM_COUNT == 2);
if (cur_prop_p->types[1 - i].type_and_flags != ECMA_PROPERTY_TYPE_DELETED)
{
/* The other property is still valid. */
return;
}
JERRY_ASSERT (cur_prop_p->types[i].type_and_flags == ECMA_PROPERTY_TYPE_DELETED);
if (prev_prop_p == NULL)
{
object_p->property_list_or_bound_object_cp = cur_prop_p->next_property_cp;
}
else
{
prev_prop_p->next_property_cp = cur_prop_p->next_property_cp;
}
ecma_dealloc_property_pair ((ecma_property_pair_t *) cur_prop_p);
return;
}
}
prev_prop_p = cur_prop_p;
cur_prop_p = ECMA_GET_POINTER (ecma_property_header_t,
cur_prop_p->next_property_cp);
}
} /* ecma_delete_property */
/**
* Get setter of named accessor property
*
* @return pointer to object - setter of the property
*/
ecma_object_t *
ecma_get_named_accessor_property_setter (const ecma_property_value_t *prop_value_p) /**< property value reference */
{
#ifdef JERRY_CPOINTER_32_BIT
ecma_getter_setter_pointers_t *getter_setter_pair_p;
getter_setter_pair_p = ECMA_GET_POINTER (ecma_getter_setter_pointers_t,
prop_value_p->getter_setter_pair_cp);
return ECMA_GET_POINTER (ecma_object_t, getter_setter_pair_p->setter_p);
#else /* !JERRY_CPOINTER_32_BIT */
return ECMA_GET_POINTER (ecma_object_t, prop_value_p->getter_setter_pair.setter_p);
#endif /* JERRY_CPOINTER_32_BIT */
} /* ecma_get_named_accessor_property_setter */
/**
* Find internal property in the object's property set.
*
* @return pointer to the property, if it is found,
* NULL - otherwise.
*/
ecma_property_t *
ecma_find_internal_property (ecma_object_t *object_p, /**< object descriptor */
ecma_internal_property_id_t property_id) /**< internal property identifier */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (property_id != ECMA_INTERNAL_PROPERTY_PROTOTYPE
&& property_id != ECMA_INTERNAL_PROPERTY_EXTENSIBLE);
ecma_property_header_t *prop_iter_p = ecma_get_property_list (object_p);
while (prop_iter_p != NULL)
{
JERRY_ASSERT (ECMA_PROPERTY_IS_PROPERTY_PAIR (prop_iter_p));
if (ECMA_PROPERTY_GET_TYPE (&prop_iter_p->types[0]) == ECMA_PROPERTY_TYPE_INTERNAL
&& ECMA_PROPERTY_GET_INTERNAL_PROPERTY_TYPE (prop_iter_p->types + 0) == property_id)
{
return prop_iter_p->types + 0;
}
if (ECMA_PROPERTY_GET_TYPE (&prop_iter_p->types[1]) == ECMA_PROPERTY_TYPE_INTERNAL
&& ECMA_PROPERTY_GET_INTERNAL_PROPERTY_TYPE (prop_iter_p->types + 1) == property_id)
{
return prop_iter_p->types + 1;
}
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
return NULL;
} /* ecma_find_internal_property */
/**
* Get next object in list of objects with same generation.
*/
static inline ecma_object_t *
ecma_gc_get_object_next (ecma_object_t *object_p) /**< object */
{
JERRY_ASSERT (object_p != NULL);
return ECMA_GET_POINTER (ecma_object_t, object_p->gc_next_cp);
} /* ecma_gc_get_object_next */
/**
* Get setter of named accessor property
*
* @return pointer to object - setter of the property
*/
ecma_object_t *
ecma_get_named_accessor_property_setter (const ecma_property_t *prop_p) /**< named accessor property */
{
JERRY_ASSERT (ECMA_PROPERTY_GET_TYPE (prop_p) == ECMA_PROPERTY_TYPE_NAMEDACCESSOR);
return ECMA_GET_POINTER (ecma_object_t, ECMA_PROPERTY_VALUE_PTR (prop_p)->getter_setter_pair.setter_p);
} /* ecma_get_named_accessor_property_setter */
/**
* Check that
*/
static void
ecma_assert_object_contains_the_property (const ecma_object_t *object_p, /**< ecma-object */
const ecma_property_t *prop_p) /**< ecma-property */
{
#ifndef JERRY_NDEBUG
ecma_property_header_t *prop_iter_p = ecma_get_property_list (object_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;
for (int i = 0; i < ECMA_PROPERTY_PAIR_ITEM_COUNT; i++)
{
if ((prop_pair_p->header.types + i) == prop_p)
{
return;
}
}
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
JERRY_UNREACHABLE ();
#else /* JERRY_NDEBUG */
(void) object_p;
(void) prop_p;
#endif /* JERRY_NDEBUG */
} /* ecma_assert_object_contains_the_property */
/**
* Free the collection of ecma values.
*/
void
ecma_free_values_collection (ecma_collection_header_t *header_p, /**< collection's header */
bool do_deref_if_object) /**< if the value is object value,
decrement reference counter of the object */
{
JERRY_ASSERT (header_p != NULL);
const size_t values_in_chunk = JERRY_SIZE_OF_STRUCT_MEMBER (ecma_collection_chunk_t, data) / sizeof (ecma_value_t);
ecma_collection_chunk_t *chunk_p = ECMA_GET_POINTER (ecma_collection_chunk_t,
header_p->first_chunk_cp);
ecma_length_t value_index = 0;
while (chunk_p != NULL)
{
JERRY_ASSERT (value_index < header_p->unit_number);
ecma_value_t *cur_value_buf_iter_p = (ecma_value_t *) chunk_p->data;
ecma_value_t *cur_value_buf_end_p = cur_value_buf_iter_p + values_in_chunk;
while (cur_value_buf_iter_p != cur_value_buf_end_p
&& value_index < header_p->unit_number)
{
JERRY_ASSERT (cur_value_buf_iter_p < cur_value_buf_end_p);
if (do_deref_if_object)
{
ecma_free_value (*cur_value_buf_iter_p);
}
else
{
ecma_free_value_if_not_object (*cur_value_buf_iter_p);
}
cur_value_buf_iter_p++;
value_index++;
}
ecma_collection_chunk_t *next_chunk_p = ECMA_GET_POINTER (ecma_collection_chunk_t,
chunk_p->next_chunk_cp);
ecma_dealloc_collection_chunk (chunk_p);
chunk_p = next_chunk_p;
}
ecma_dealloc_collection_header (header_p);
} /* ecma_free_values_collection */
/**
* 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 */
/**
* Get outer reference of lexical environment.
*/
inline ecma_object_t *__attr_pure___
ecma_get_lex_env_outer_reference (const ecma_object_t *object_p) /**< lexical environment */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (ecma_is_lexical_environment (object_p));
return ECMA_GET_POINTER (ecma_object_t,
object_p->prototype_or_outer_reference_cp);
} /* ecma_get_lex_env_outer_reference */
/**
* Mark objects as visited starting from specified object as root
*/
void
ecma_gc_mark (ecma_object_t *object_p) /**< object to mark from */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (ecma_gc_is_object_visited (object_p));
bool traverse_properties = true;
if (ecma_is_lexical_environment (object_p))
{
ecma_object_t *lex_env_p = ecma_get_lex_env_outer_reference (object_p);
if (lex_env_p != NULL)
{
ecma_gc_set_object_visited (lex_env_p, true);
}
if (ecma_get_lex_env_type (object_p) != ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE)
{
ecma_object_t *binding_object_p = ecma_get_lex_env_binding_object (object_p);
ecma_gc_set_object_visited (binding_object_p, true);
traverse_properties = false;
}
}
else
{
ecma_object_t *proto_p = ecma_get_object_prototype (object_p);
if (proto_p != NULL)
{
ecma_gc_set_object_visited (proto_p, true);
}
}
if (traverse_properties)
{
ecma_property_header_t *prop_iter_p = ecma_get_property_list (object_p);
while (prop_iter_p != NULL)
{
JERRY_ASSERT (ECMA_PROPERTY_IS_PROPERTY_PAIR (prop_iter_p));
if (prop_iter_p->types[0].type_and_flags != ECMA_PROPERTY_TYPE_DELETED)
{
ecma_gc_mark_property (prop_iter_p->types + 0);
}
if (prop_iter_p->types[1].type_and_flags != ECMA_PROPERTY_TYPE_DELETED)
{
ecma_gc_mark_property (prop_iter_p->types + 1);
}
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
}
} /* ecma_gc_mark */
/**
* Get object's/lexical environment's property list.
*
* See also:
* ecma_op_object_get_property_names
*/
inline ecma_property_header_t *__attr_pure___
ecma_get_property_list (const ecma_object_t *object_p) /**< object or lexical environment */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (!ecma_is_lexical_environment (object_p)
|| ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE);
return ECMA_GET_POINTER (ecma_property_header_t,
object_p->property_list_or_bound_object_cp);
} /* ecma_get_property_list */
/**
* Check whether the object contains a property
*/
static void
ecma_assert_object_contains_the_property (const ecma_object_t *object_p, /**< ecma-object */
const ecma_property_value_t *prop_value_p, /**< property value */
ecma_property_types_t type) /**< expected property type */
{
#ifndef JERRY_NDEBUG
ecma_property_header_t *prop_iter_p = ecma_get_property_list (object_p);
JERRY_ASSERT (prop_iter_p != NULL);
if (prop_iter_p->types[0] == ECMA_PROPERTY_TYPE_HASHMAP)
{
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
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;
for (int i = 0; i < ECMA_PROPERTY_PAIR_ITEM_COUNT; i++)
{
if ((prop_pair_p->values + i) == prop_value_p)
{
JERRY_ASSERT (ECMA_PROPERTY_GET_TYPE (prop_pair_p->header.types[i]) == type);
return;
}
}
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
JERRY_UNREACHABLE ();
#else /* JERRY_NDEBUG */
JERRY_UNUSED (object_p);
JERRY_UNUSED (prop_value_p);
JERRY_UNUSED (type);
#endif /* !JERRY_NDEBUG */
} /* ecma_assert_object_contains_the_property */
/**
* Free property values and change their type to deleted.
*/
void
ecma_free_property (ecma_object_t *object_p, /**< object the property belongs to */
jmem_cpointer_t name_cp, /**< name of the property or ECMA_NULL_POINTER */
ecma_property_t *property_p) /**< property */
{
JERRY_ASSERT (object_p != NULL && property_p != NULL);
switch (ECMA_PROPERTY_GET_TYPE (*property_p))
{
case ECMA_PROPERTY_TYPE_NAMEDDATA:
{
if (ECMA_PROPERTY_GET_NAME_TYPE (*property_p) == ECMA_STRING_CONTAINER_MAGIC_STRING)
{
if (name_cp == LIT_INTERNAL_MAGIC_STRING_NATIVE_HANDLE
|| name_cp == LIT_INTERNAL_MAGIC_STRING_NATIVE_POINTER)
{
ecma_free_native_pointer (property_p);
break;
}
}
ecma_free_value_if_not_object (ECMA_PROPERTY_VALUE_PTR (property_p)->value);
break;
}
case ECMA_PROPERTY_TYPE_NAMEDACCESSOR:
{
#ifdef JERRY_CPOINTER_32_BIT
ecma_getter_setter_pointers_t *getter_setter_pair_p;
getter_setter_pair_p = ECMA_GET_POINTER (ecma_getter_setter_pointers_t,
ECMA_PROPERTY_VALUE_PTR (property_p)->getter_setter_pair_cp);
jmem_pools_free (getter_setter_pair_p, sizeof (ecma_getter_setter_pointers_t));
#endif /* JERRY_CPOINTER_32_BIT */
break;
}
default:
{
JERRY_UNREACHABLE ();
return;
}
}
if (ecma_is_property_lcached (property_p))
{
ecma_lcache_invalidate (object_p, name_cp, property_p);
}
if (ECMA_PROPERTY_GET_NAME_TYPE (*property_p) == ECMA_PROPERTY_NAME_TYPE_STRING)
{
ecma_string_t *prop_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t, name_cp);
ecma_deref_ecma_string (prop_name_p);
}
*property_p = ECMA_PROPERTY_TYPE_DELETED;
} /* ecma_free_property */
/**
* Move collection iterator to next element if there is any.
*
* @return true - if iterator moved,
* false - otherwise (current element is last element in the collection)
*/
bool
ecma_collection_iterator_next (ecma_collection_iterator_t *iterator_p) /**< context of iterator */
{
if (iterator_p->header_p == NULL
|| unlikely (iterator_p->header_p->unit_number == 0))
{
return false;
}
const size_t values_in_chunk = JERRY_SIZE_OF_STRUCT_MEMBER (ecma_collection_chunk_t, data) / sizeof (ecma_value_t);
if (iterator_p->current_value_p == NULL)
{
JERRY_ASSERT (iterator_p->current_index == 0);
ecma_collection_chunk_t *first_chunk_p = ECMA_GET_NON_NULL_POINTER (ecma_collection_chunk_t,
iterator_p->header_p->first_chunk_cp);
iterator_p->next_chunk_cp = first_chunk_p->next_chunk_cp;
iterator_p->current_value_p = (ecma_value_t *) &first_chunk_p->data;
iterator_p->current_chunk_end_p = (iterator_p->current_value_p + values_in_chunk);
}
else
{
if (iterator_p->current_index + 1 == iterator_p->header_p->unit_number)
{
return false;
}
JERRY_ASSERT (iterator_p->current_index + 1 < iterator_p->header_p->unit_number);
iterator_p->current_index++;
iterator_p->current_value_p++;
}
if (iterator_p->current_value_p == iterator_p->current_chunk_end_p)
{
ecma_collection_chunk_t *next_chunk_p = ECMA_GET_POINTER (ecma_collection_chunk_t,
iterator_p->next_chunk_cp);
JERRY_ASSERT (next_chunk_p != NULL);
iterator_p->next_chunk_cp = next_chunk_p->next_chunk_cp;
iterator_p->current_value_p = (ecma_value_t *) &next_chunk_p->data;
iterator_p->current_chunk_end_p = iterator_p->current_value_p + values_in_chunk;
}
else
{
JERRY_ASSERT (iterator_p->current_value_p < iterator_p->current_chunk_end_p);
}
return true;
} /* ecma_collection_iterator_next */
/**
* Get next object in list of objects with same generation.
*/
static ecma_object_t*
ecma_gc_get_object_next (ecma_object_t *object_p) /**< object */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_GC_NEXT_CP_WIDTH);
uintptr_t next_cp = (uintptr_t) jrt_extract_bit_field (object_p->container,
ECMA_OBJECT_GC_NEXT_CP_POS,
ECMA_OBJECT_GC_NEXT_CP_WIDTH);
return ECMA_GET_POINTER (ecma_object_t,
next_cp);
} /* ecma_gc_get_object_next */
/**
* Helper function to merge argument lists
*
* See also:
* ECMA-262 v5, 15.3.4.5.1 step 4
* ECMA-262 v5, 15.3.4.5.2 step 4
*
* Used by:
* - [[Call]] implementation for Function objects.
* - [[Construct]] implementation for Function objects.
*
* @return ecma_value_t* - pointer to the merged argument list.
*/
static ecma_value_t*
ecma_function_bind_merge_arg_lists (ecma_object_t *func_obj_p, /**< Function object */
const ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len, /**< length of arguments list */
ecma_length_t *total_args_count) /**< length of the merged argument list */
{
ecma_value_t *arg_list_p;
ecma_length_t bound_args_count = 0;
ecma_property_t *bound_args_prop_p;
bound_args_prop_p = ecma_find_internal_property (func_obj_p, ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_BOUND_ARGS);
if (bound_args_prop_p != NULL)
{
ecma_collection_header_t *bound_arg_list_p = ECMA_GET_POINTER (ecma_collection_header_t,
bound_args_prop_p->u.internal_property.value);
ecma_collection_iterator_t bound_args_iterator;
ecma_collection_iterator_init (&bound_args_iterator, bound_arg_list_p);
bound_args_count = bound_arg_list_p->unit_number;
*total_args_count = bound_args_count + arguments_list_len;
const size_t arg_list_size = (size_t) *total_args_count * sizeof (ecma_value_t);
arg_list_p = static_cast <ecma_value_t *> (mem_heap_alloc_block (arg_list_size, MEM_HEAP_ALLOC_SHORT_TERM));
for (ecma_length_t i = 0; i < bound_args_count; i++)
{
bool is_moved = ecma_collection_iterator_next (&bound_args_iterator);
JERRY_ASSERT (is_moved);
arg_list_p[i] = *bound_args_iterator.current_value_p;
}
}
else
{
*total_args_count = arguments_list_len;
const size_t arg_list_size = (size_t) *total_args_count * sizeof (ecma_value_t);
arg_list_p = static_cast <ecma_value_t *> (mem_heap_alloc_block (arg_list_size, MEM_HEAP_ALLOC_SHORT_TERM));
}
for (ecma_length_t i = 0; i < arguments_list_len; i++)
{
arg_list_p[i + bound_args_count] = arguments_list_p[i];
}
return arg_list_p;
} /* ecma_function_bind_merge_arg_lists */
/**
* Set setter of named accessor property
*/
void
ecma_set_named_accessor_property_setter (ecma_object_t *object_p, /**< the property's container */
ecma_property_value_t *prop_value_p, /**< property value reference */
ecma_object_t *setter_p) /**< setter object */
{
ecma_assert_object_contains_the_property (object_p, prop_value_p, ECMA_PROPERTY_TYPE_NAMEDACCESSOR);
#ifdef JERRY_CPOINTER_32_BIT
ecma_getter_setter_pointers_t *getter_setter_pair_p;
getter_setter_pair_p = ECMA_GET_POINTER (ecma_getter_setter_pointers_t,
prop_value_p->getter_setter_pair_cp);
ECMA_SET_POINTER (getter_setter_pair_p->setter_p, setter_p);
#else /* !JERRY_CPOINTER_32_BIT */
ECMA_SET_POINTER (prop_value_p->getter_setter_pair.setter_p, setter_p);
#endif /* JERRY_CPOINTER_32_BIT */
} /* ecma_set_named_accessor_property_setter */
/**
* Free specified object
*/
void
ecma_gc_sweep (ecma_object_t *object_p) /**< object to free */
{
JERRY_ASSERT (object_p != NULL
&& !ecma_gc_is_object_visited (object_p)
&& ecma_gc_get_object_refs (object_p) == 0);
if (!ecma_is_lexical_environment (object_p))
{
/* if the object provides free callback, invoke it with handle stored in the object */
ecma_external_pointer_t freecb_p;
ecma_external_pointer_t native_p;
bool is_retrieved = ecma_get_external_pointer_value (object_p,
ECMA_INTERNAL_PROPERTY_FREE_CALLBACK,
&freecb_p);
if (is_retrieved)
{
is_retrieved = ecma_get_external_pointer_value (object_p,
ECMA_INTERNAL_PROPERTY_NATIVE_HANDLE,
&native_p);
JERRY_ASSERT (is_retrieved);
jerry_dispatch_object_free_callback (freecb_p, native_p);
}
}
if (!ecma_is_lexical_environment (object_p) ||
ecma_get_lex_env_type (object_p) != ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND)
{
for (ecma_property_t *property = ecma_get_property_list (object_p), *next_property_p;
property != NULL;
property = next_property_p)
{
next_property_p = ECMA_GET_POINTER (ecma_property_t,
property->next_property_p);
ecma_free_property (object_p, property);
}
}
JERRY_ASSERT (ecma_gc_objects_number > 0);
ecma_gc_objects_number--;
ecma_dealloc_object (object_p);
} /* ecma_gc_sweep */
/**
* Lookup property in the LCache
*
* @return true - if (object, property name) pair is registered in LCache,
* false - probably, not registered.
*/
bool __attr_always_inline___
ecma_lcache_lookup (ecma_object_t *object_p, /**< object */
const ecma_string_t *prop_name_p, /**< property's name */
ecma_property_t **prop_p_p) /**< [out] if return value is true,
* then here will be pointer to property,
* if the object contains property with specified name,
* or, otherwise - NULL;
* if return value is false,
* then the output parameter is not set */
{
#ifndef CONFIG_ECMA_LCACHE_DISABLE
lit_string_hash_t hash_key = ecma_string_hash (prop_name_p);
unsigned int object_cp;
ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
for (uint32_t i = 0; i < ECMA_LCACHE_HASH_ROW_LENGTH; i++)
{
if (ecma_lcache_hash_table[hash_key][i].object_cp == object_cp)
{
ecma_string_t *entry_prop_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
ecma_lcache_hash_table[hash_key][i].prop_name_cp);
if (ecma_compare_ecma_strings_equal_hashes (prop_name_p, entry_prop_name_p))
{
ecma_property_t *prop_p = ECMA_GET_POINTER (ecma_property_t, ecma_lcache_hash_table[hash_key][i].prop_cp);
JERRY_ASSERT (prop_p == NULL || ecma_is_property_lcached (prop_p));
*prop_p_p = prop_p;
return true;
}
else
{
/* may be equal but it is long to compare it here */
}
}
}
#else /* CONFIG_ECMA_LCACHE_DISABLE */
(void) object_p;
(void) prop_name_p;
(void) prop_p_p;
#endif /* CONFIG_ECMA_LCACHE_DISABLE */
return false;
} /* ecma_lcache_lookup */
/**
* Free the internal property and values it references.
*/
static void
ecma_free_internal_property (ecma_property_t *property_p) /**< the property */
{
JERRY_ASSERT (property_p != NULL && ECMA_PROPERTY_GET_TYPE (property_p) == ECMA_PROPERTY_TYPE_INTERNAL);
uint32_t property_value = ECMA_PROPERTY_VALUE_PTR (property_p)->value;
switch (ECMA_PROPERTY_GET_INTERNAL_PROPERTY_TYPE (property_p))
{
case ECMA_INTERNAL_PROPERTY_NUMBER_INDEXED_ARRAY_VALUES: /* a collection */
case ECMA_INTERNAL_PROPERTY_STRING_INDEXED_ARRAY_VALUES: /* a collection */
{
ecma_free_values_collection (ECMA_GET_NON_NULL_POINTER (ecma_collection_header_t,
property_value),
true);
break;
}
case ECMA_INTERNAL_PROPERTY_PRIMITIVE_STRING_VALUE: /* compressed pointer to a ecma_string_t */
{
ecma_string_t *str_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
property_value);
ecma_deref_ecma_string (str_p);
break;
}
case ECMA_INTERNAL_PROPERTY_PRIMITIVE_NUMBER_VALUE: /* pointer to a ecma_number_t */
{
ecma_number_t *num_p = ECMA_GET_NON_NULL_POINTER (ecma_number_t,
property_value);
ecma_dealloc_number (num_p);
break;
}
case ECMA_INTERNAL_PROPERTY_NATIVE_CODE: /* an external pointer */
case ECMA_INTERNAL_PROPERTY_NATIVE_HANDLE: /* an external pointer */
case ECMA_INTERNAL_PROPERTY_FREE_CALLBACK: /* an external pointer */
{
ecma_free_external_pointer_in_property (property_p);
break;
}
case ECMA_INTERNAL_PROPERTY_PRIMITIVE_BOOLEAN_VALUE: /* a simple boolean value */
case ECMA_INTERNAL_PROPERTY_SCOPE: /* a lexical environment */
case ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP: /* an object */
case ECMA_INTERNAL_PROPERTY_PROTOTYPE: /* the property's value is located in ecma_object_t */
case ECMA_INTERNAL_PROPERTY_EXTENSIBLE: /* the property's value is located in ecma_object_t */
case ECMA_INTERNAL_PROPERTY_CLASS: /* an enum */
case ECMA_INTERNAL_PROPERTY_BUILT_IN_ID: /* an integer */
case ECMA_INTERNAL_PROPERTY_BUILT_IN_ROUTINE_DESC: /* an integer */
case ECMA_INTERNAL_PROPERTY_EXTENSION_ID: /* an integer */
case ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_0_31: /* an integer (bit-mask) */
case ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_32_63: /* an integer (bit-mask) */
case ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_TARGET_FUNCTION:
{
break;
}
case ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_BOUND_THIS:
{
ecma_free_value_if_not_object (property_value);
break;
}
case ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_BOUND_ARGS:
{
if (property_value != ECMA_NULL_POINTER)
{
ecma_free_values_collection (ECMA_GET_NON_NULL_POINTER (ecma_collection_header_t, property_value),
false);
}
break;
}
case ECMA_INTERNAL_PROPERTY__COUNT: /* not a real internal property type,
* but number of the real internal property types */
{
JERRY_UNREACHABLE ();
break;
}
case ECMA_INTERNAL_PROPERTY_CODE_BYTECODE: /* compressed pointer to a bytecode array */
{
ecma_bytecode_deref (ECMA_GET_NON_NULL_POINTER (ecma_compiled_code_t, property_value));
break;
}
case ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE: /* compressed pointer to a regexp bytecode array */
{
ecma_compiled_code_t *bytecode_p = ECMA_GET_POINTER (ecma_compiled_code_t, property_value);
if (bytecode_p != NULL)
{
ecma_bytecode_deref (bytecode_p);
}
break;
}
}
} /* ecma_free_internal_property */
/**
* Mark objects as visited starting from specified object as root
*/
void
ecma_gc_mark (ecma_object_t *object_p) /**< object to mark from */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (ecma_gc_is_object_visited (object_p));
bool traverse_properties = true;
if (ecma_is_lexical_environment (object_p))
{
ecma_object_t *lex_env_p = ecma_get_lex_env_outer_reference (object_p);
if (lex_env_p != NULL)
{
ecma_gc_set_object_visited (lex_env_p, true);
}
if (ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND)
{
ecma_object_t *binding_object_p = ecma_get_lex_env_binding_object (object_p);
ecma_gc_set_object_visited (binding_object_p, true);
traverse_properties = false;
}
}
else
{
ecma_object_t *proto_p = ecma_get_object_prototype (object_p);
if (proto_p != NULL)
{
ecma_gc_set_object_visited (proto_p, true);
}
}
if (traverse_properties)
{
for (ecma_property_t *property_p = ecma_get_property_list (object_p), *next_property_p;
property_p != NULL;
property_p = next_property_p)
{
next_property_p = ECMA_GET_POINTER (ecma_property_t,
property_p->next_property_p);
switch ((ecma_property_type_t) property_p->type)
{
case ECMA_PROPERTY_NAMEDDATA:
{
ecma_value_t value = ecma_get_named_data_property_value (property_p);
if (ecma_is_value_object (value))
{
ecma_object_t *value_obj_p = ecma_get_object_from_value (value);
ecma_gc_set_object_visited (value_obj_p, true);
}
break;
}
case ECMA_PROPERTY_NAMEDACCESSOR:
{
ecma_object_t *getter_obj_p = ecma_get_named_accessor_property_getter (property_p);
ecma_object_t *setter_obj_p = ecma_get_named_accessor_property_setter (property_p);
if (getter_obj_p != NULL)
{
ecma_gc_set_object_visited (getter_obj_p, true);
}
if (setter_obj_p != NULL)
{
ecma_gc_set_object_visited (setter_obj_p, true);
}
break;
}
case ECMA_PROPERTY_INTERNAL:
{
ecma_internal_property_id_t property_id = (ecma_internal_property_id_t) property_p->u.internal_property.type;
uint32_t property_value = property_p->u.internal_property.value;
switch (property_id)
{
case ECMA_INTERNAL_PROPERTY_NUMBER_INDEXED_ARRAY_VALUES: /* a collection of ecma-values */
case ECMA_INTERNAL_PROPERTY_STRING_INDEXED_ARRAY_VALUES: /* a collection of ecma-values */
{
JERRY_UNIMPLEMENTED ("Indexed array storage is not implemented yet.");
}
case ECMA_INTERNAL_PROPERTY_PROTOTYPE: /* the property's value is located in ecma_object_t
(see above in the routine) */
case ECMA_INTERNAL_PROPERTY_EXTENSIBLE: /* the property's value is located in ecma_object_t
(see above in the routine) */
case ECMA_INTERNAL_PROPERTY__COUNT: /* not a real internal property type,
* but number of the real internal property types */
{
JERRY_UNREACHABLE ();
}
case ECMA_INTERNAL_PROPERTY_FORMAL_PARAMETERS: /* a collection of strings */
case ECMA_INTERNAL_PROPERTY_PRIMITIVE_STRING_VALUE: /* compressed pointer to a ecma_string_t */
case ECMA_INTERNAL_PROPERTY_PRIMITIVE_NUMBER_VALUE: /* compressed pointer to a ecma_number_t */
case ECMA_INTERNAL_PROPERTY_PRIMITIVE_BOOLEAN_VALUE: /* a simple boolean value */
case ECMA_INTERNAL_PROPERTY_CLASS: /* an enum */
case ECMA_INTERNAL_PROPERTY_CODE_BYTECODE: /* compressed pointer to a bytecode array */
case ECMA_INTERNAL_PROPERTY_CODE_FLAGS_AND_OFFSET: /* an integer */
case ECMA_INTERNAL_PROPERTY_NATIVE_CODE: /* an external pointer */
case ECMA_INTERNAL_PROPERTY_NATIVE_HANDLE: /* an external pointer */
case ECMA_INTERNAL_PROPERTY_FREE_CALLBACK: /* an object's native free callback */
case ECMA_INTERNAL_PROPERTY_BUILT_IN_ID: /* an integer */
case ECMA_INTERNAL_PROPERTY_BUILT_IN_ROUTINE_DESC: /* an integer */
case ECMA_INTERNAL_PROPERTY_EXTENSION_ID: /* an integer */
case ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_0_31: /* an integer (bit-mask) */
case ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_32_63: /* an integer (bit-mask) */
case ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE:
case ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_TARGET_FUNCTION:
case ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_BOUND_THIS:
case ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_BOUND_ARGS:
{
break;
}
case ECMA_INTERNAL_PROPERTY_SCOPE: /* a lexical environment */
case ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP: /* an object */
{
ecma_object_t *obj_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t, property_value);
ecma_gc_set_object_visited (obj_p, true);
break;
}
}
break;
}
}
}
}
} /* ecma_gc_mark */
/**
* Append new value to ecma-values collection
*/
void
ecma_append_to_values_collection (ecma_collection_header_t *header_p, /**< collection's header */
ecma_value_t v, /**< ecma-value to append */
bool do_ref_if_object) /**< if the value is object value,
increase reference counter of the object */
{
const size_t values_in_chunk = sizeof (ecma_collection_chunk_t::data) / sizeof (ecma_value_t);
size_t values_number = header_p->unit_number;
size_t pos_of_new_value_in_chunk = values_number % values_in_chunk;
values_number++;
if ((ecma_length_t) values_number == values_number)
{
header_p->unit_number = (ecma_length_t) values_number;
}
else
{
jerry_fatal (ERR_OUT_OF_MEMORY);
}
ecma_collection_chunk_t *chunk_p = ECMA_GET_POINTER (ecma_collection_chunk_t,
header_p->last_chunk_cp);
if (pos_of_new_value_in_chunk == 0)
{
/* all chunks are currently filled with values */
chunk_p = ecma_alloc_collection_chunk ();
chunk_p->next_chunk_cp = ECMA_NULL_POINTER;
if (header_p->last_chunk_cp == ECMA_NULL_POINTER)
{
JERRY_ASSERT (header_p->first_chunk_cp == ECMA_NULL_POINTER);
ECMA_SET_NON_NULL_POINTER (header_p->first_chunk_cp, chunk_p);
}
else
{
ecma_collection_chunk_t *last_chunk_p = ECMA_GET_NON_NULL_POINTER (ecma_collection_chunk_t,
header_p->last_chunk_cp);
JERRY_ASSERT (last_chunk_p->next_chunk_cp == ECMA_NULL_POINTER);
ECMA_SET_NON_NULL_POINTER (last_chunk_p->next_chunk_cp, chunk_p);
}
ECMA_SET_NON_NULL_POINTER (header_p->last_chunk_cp, chunk_p);
}
else
{
/* last chunk can be appended with the new value */
JERRY_ASSERT (chunk_p != NULL);
}
ecma_value_t *values_p = (ecma_value_t *) chunk_p->data;
JERRY_ASSERT ((uint8_t *) (values_p + pos_of_new_value_in_chunk + 1) <= (uint8_t *) (chunk_p + 1));
values_p[pos_of_new_value_in_chunk] = ecma_copy_value (v, do_ref_if_object);
} /* ecma_append_to_values_collection */
/**
* The Object.keys and Object.getOwnPropertyName routine's common part.
*
* See also:
* ECMA-262 v5, 15.2.3.4 steps 2-5
* ECMA-262 v5, 15.2.3.14 steps 3-6
*
* @return completion value - Array of property names.
* Returned value must be freed with ecma_free_completion_value.
*/
ecma_completion_value_t
ecma_builtin_helper_object_get_properties (ecma_object_t *obj_p, /** < object */
bool only_enumerable_properties) /** < list enumerable properties? */
{
JERRY_ASSERT (obj_p != NULL);
ecma_completion_value_t new_array = ecma_op_create_array_object (NULL, 0, false);
JERRY_ASSERT (ecma_is_completion_value_normal (new_array));
ecma_object_t *new_array_p = ecma_get_object_from_completion_value (new_array);
uint32_t index = 0;
for (ecma_property_t *property_p = ecma_get_property_list (obj_p);
property_p != NULL;
property_p = ECMA_GET_POINTER (ecma_property_t, property_p->next_property_p))
{
ecma_string_t *property_name_p;
if (property_p->type == ECMA_PROPERTY_NAMEDDATA)
{
property_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
property_p->u.named_data_property.name_p);
}
else if (property_p->type == ECMA_PROPERTY_NAMEDACCESSOR)
{
property_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
property_p->u.named_accessor_property.name_p);
}
else
{
continue;
}
if (only_enumerable_properties && !ecma_is_property_enumerable (property_p))
{
continue;
}
JERRY_ASSERT (property_name_p != NULL);
ecma_string_t *index_string_p = ecma_new_ecma_string_from_uint32 (index);
ecma_property_descriptor_t item_prop_desc = ecma_make_empty_property_descriptor ();
{
item_prop_desc.is_value_defined = true;
item_prop_desc.value = ecma_make_string_value (property_name_p);
item_prop_desc.is_writable_defined = true;
item_prop_desc.is_writable = true;
item_prop_desc.is_enumerable_defined = true;
item_prop_desc.is_enumerable = true;
item_prop_desc.is_configurable_defined = true;
item_prop_desc.is_configurable = true;
}
ecma_completion_value_t completion = ecma_op_object_define_own_property (new_array_p,
index_string_p,
&item_prop_desc,
false);
JERRY_ASSERT (ecma_is_completion_value_normal_true (completion));
ecma_free_completion_value (completion);
ecma_deref_ecma_string (index_string_p);
index++;
}
return new_array;
} /* ecma_builtin_helper_object_get_properties */
/**
* Free specified object
*/
void
ecma_gc_sweep (ecma_object_t *object_p) /**< object to free */
{
JERRY_ASSERT (object_p != NULL
&& !ecma_gc_is_object_visited (object_p)
&& object_p->type_flags_refs < ECMA_OBJECT_REF_ONE);
if (!ecma_is_lexical_environment (object_p))
{
/* if the object provides free callback, invoke it with handle stored in the object */
ecma_external_pointer_t freecb_p;
ecma_external_pointer_t native_p;
bool is_retrieved = ecma_get_external_pointer_value (object_p,
ECMA_INTERNAL_PROPERTY_FREE_CALLBACK,
&freecb_p);
if (is_retrieved && ((jerry_object_free_callback_t) freecb_p) != NULL)
{
is_retrieved = ecma_get_external_pointer_value (object_p,
ECMA_INTERNAL_PROPERTY_NATIVE_HANDLE,
&native_p);
JERRY_ASSERT (is_retrieved);
jerry_dispatch_object_free_callback (freecb_p, native_p);
}
}
if (!ecma_is_lexical_environment (object_p)
|| ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE)
{
ecma_property_header_t *prop_iter_p = ecma_get_property_list (object_p);
if (prop_iter_p != NULL
&& ECMA_PROPERTY_GET_TYPE (prop_iter_p->types[0]) == ECMA_PROPERTY_TYPE_HASHMAP)
{
ecma_property_hashmap_free (object_p);
prop_iter_p = ecma_get_property_list (object_p);
}
while (prop_iter_p != NULL)
{
JERRY_ASSERT (ECMA_PROPERTY_IS_PROPERTY_PAIR (prop_iter_p));
/* Both cannot be deleted. */
JERRY_ASSERT (prop_iter_p->types[0] != ECMA_PROPERTY_TYPE_DELETED
|| prop_iter_p->types[1] != ECMA_PROPERTY_TYPE_DELETED);
ecma_property_pair_t *prop_pair_p = (ecma_property_pair_t *) prop_iter_p;
for (int i = 0; i < ECMA_PROPERTY_PAIR_ITEM_COUNT; i++)
{
if (prop_iter_p->types[i] != ECMA_PROPERTY_TYPE_DELETED)
{
ecma_string_t *name_p = ECMA_GET_POINTER (ecma_string_t, prop_pair_p->names_cp[i]);
ecma_free_property (object_p, name_p, prop_iter_p->types + i);
if (name_p != NULL)
{
ecma_deref_ecma_string (name_p);
}
}
}
/* Both must be deleted. */
JERRY_ASSERT (prop_iter_p->types[0] == ECMA_PROPERTY_TYPE_DELETED
&& prop_iter_p->types[1] == ECMA_PROPERTY_TYPE_DELETED);
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
ecma_dealloc_property_pair (prop_pair_p);
}
}
JERRY_ASSERT (JERRY_CONTEXT (ecma_gc_objects_number) > 0);
JERRY_CONTEXT (ecma_gc_objects_number)--;
if (!ecma_is_lexical_environment (object_p))
{
if (ecma_get_object_is_builtin (object_p)
|| ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION)
{
ecma_dealloc_extended_object ((ecma_extended_object_t *) object_p);
return;
}
if (ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_FUNCTION)
{
/* Function with byte-code (not a built-in function). */
ecma_extended_object_t *ext_func_p = (ecma_extended_object_t *) object_p;
ecma_bytecode_deref (ECMA_GET_INTERNAL_VALUE_POINTER (ecma_compiled_code_t,
ext_func_p->u.function.bytecode_cp));
ecma_dealloc_extended_object (ext_func_p);
return;
}
}
ecma_dealloc_object (object_p);
} /* ecma_gc_sweep */
/**
* 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 */
/**
* Mark objects as visited starting from specified object as root
*/
void
ecma_gc_mark (ecma_object_t *object_p) /**< object to mark from */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (ecma_gc_is_object_visited (object_p));
bool traverse_properties = true;
if (ecma_is_lexical_environment (object_p))
{
ecma_object_t *lex_env_p = ecma_get_lex_env_outer_reference (object_p);
if (lex_env_p != NULL)
{
ecma_gc_set_object_visited (lex_env_p, true);
}
if (ecma_get_lex_env_type (object_p) != ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE)
{
ecma_object_t *binding_object_p = ecma_get_lex_env_binding_object (object_p);
ecma_gc_set_object_visited (binding_object_p, true);
traverse_properties = false;
}
}
else
{
ecma_object_t *proto_p = ecma_get_object_prototype (object_p);
if (proto_p != NULL)
{
ecma_gc_set_object_visited (proto_p, true);
}
if (!ecma_get_object_is_builtin (object_p)
&& ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_FUNCTION)
{
ecma_extended_object_t *ext_func_p = (ecma_extended_object_t *) object_p;
ecma_object_t *scope_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_object_t,
ext_func_p->u.function.scope_cp);
ecma_gc_set_object_visited (scope_p, true);
}
}
if (traverse_properties)
{
ecma_property_header_t *prop_iter_p = ecma_get_property_list (object_p);
if (prop_iter_p != NULL
&& ECMA_PROPERTY_GET_TYPE (prop_iter_p->types[0]) == ECMA_PROPERTY_TYPE_HASHMAP)
{
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
while (prop_iter_p != NULL)
{
JERRY_ASSERT (ECMA_PROPERTY_IS_PROPERTY_PAIR (prop_iter_p));
if (prop_iter_p->types[0] != ECMA_PROPERTY_TYPE_DELETED)
{
ecma_gc_mark_property (prop_iter_p->types + 0);
}
if (prop_iter_p->types[1] != ECMA_PROPERTY_TYPE_DELETED)
{
ecma_gc_mark_property (prop_iter_p->types + 1);
}
prop_iter_p = ECMA_GET_POINTER (ecma_property_header_t,
prop_iter_p->next_property_cp);
}
}
} /* ecma_gc_mark */
/**
* Enumerate properties and construct collection with their
* names for further iteration in for-in opcode handler.
*
* See also:
* ECMA-262 v5, 12.6.4
*
* @return header of constructed strings collection (should be freed with ecma_free_values_collection),
* or NULL - if there are no properties to enumerate in for-in.
*/
static ecma_collection_header_t *
vm_helper_for_in_enumerate_properties_names (ecma_object_t *obj_p) /**< starting object - result of ToObject
* conversion (ECMA-262 v5, 12.6.4, step 4) */
{
const size_t bitmap_row_size = sizeof (uint32_t) * JERRY_BITSINBYTE;
uint32_t names_hashes_bitmap[(1u << LIT_STRING_HASH_BITS) / bitmap_row_size];
memset (names_hashes_bitmap, 0, sizeof (names_hashes_bitmap));
ecma_length_t all_properties_count = 0;
/* First pass: counting properties */
for (ecma_object_t *prototype_chain_iter_p = obj_p;
prototype_chain_iter_p != NULL;
prototype_chain_iter_p = ecma_get_object_prototype (prototype_chain_iter_p))
{
for (ecma_property_t *prop_iter_p = ecma_get_property_list (prototype_chain_iter_p);
prop_iter_p != NULL;
prop_iter_p = ECMA_GET_POINTER (ecma_property_t, prop_iter_p->next_property_p))
{
if (prop_iter_p->type == ECMA_PROPERTY_NAMEDDATA
|| prop_iter_p->type == ECMA_PROPERTY_NAMEDACCESSOR)
{
all_properties_count++;
}
else
{
JERRY_ASSERT (prop_iter_p->type == ECMA_PROPERTY_INTERNAL);
}
}
}
if (all_properties_count == 0)
{
return NULL;
}
ecma_collection_header_t *ret_p = NULL;
/* Second pass: collecting properties names */
MEM_DEFINE_LOCAL_ARRAY (names_p, all_properties_count, ecma_string_t*);
ecma_length_t enumerated_properties_count = 0;
ecma_length_t non_enumerated_properties_count = 0;
for (ecma_object_t *prototype_chain_iter_p = obj_p;
prototype_chain_iter_p != NULL;
prototype_chain_iter_p = ecma_get_object_prototype (prototype_chain_iter_p))
{
for (ecma_property_t *prop_iter_p = ecma_get_property_list (prototype_chain_iter_p);
prop_iter_p != NULL;
prop_iter_p = ECMA_GET_POINTER (ecma_property_t, prop_iter_p->next_property_p))
{
if (prop_iter_p->type == ECMA_PROPERTY_NAMEDDATA
|| prop_iter_p->type == ECMA_PROPERTY_NAMEDACCESSOR)
{
bool is_enumerated;
ecma_string_t *prop_name_p;
if (prop_iter_p->type == ECMA_PROPERTY_NAMEDDATA)
{
prop_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t, prop_iter_p->u.named_data_property.name_p);
}
else
{
prop_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t, prop_iter_p->u.named_accessor_property.name_p);
}
lit_string_hash_t hash = prop_name_p->hash;
uint32_t bitmap_row = hash / bitmap_row_size;
uint32_t bitmap_column = hash % bitmap_row_size;
if (ecma_is_property_enumerable (prop_iter_p))
{
if ((names_hashes_bitmap[bitmap_row] & (1u << bitmap_column)) == 0)
{
/* no name with the hash occured during the iteration session */
is_enumerated = true;
}
else
{
/* name with same hash already occured */
bool is_equal_found = false;
for (uint32_t index = 0;
!is_equal_found && index < enumerated_properties_count;
index++)
{
if (ecma_compare_ecma_strings (prop_name_p,
names_p[index]))
{
is_equal_found = true;
}
}
for (uint32_t index = 0;
!is_equal_found && index < non_enumerated_properties_count;
index++)
{
if (ecma_compare_ecma_strings (prop_name_p,
names_p[all_properties_count - index - 1]))
{
is_equal_found = true;
}
}
is_enumerated = !is_equal_found;
}
}
else
{
is_enumerated = false;
}
names_hashes_bitmap[bitmap_row] |= (1u << bitmap_column);
if (is_enumerated)
{
names_p[enumerated_properties_count++] = prop_name_p;
}
else
{
names_p[all_properties_count - non_enumerated_properties_count++ - 1] = prop_name_p;
}
JERRY_ASSERT (enumerated_properties_count + non_enumerated_properties_count <= all_properties_count);
}
else
{
JERRY_ASSERT (prop_iter_p->type == ECMA_PROPERTY_INTERNAL);
}
}
}
if (enumerated_properties_count != 0)
{
ret_p = ecma_new_strings_collection (names_p, enumerated_properties_count);
}
MEM_FINALIZE_LOCAL_ARRAY (names_p);
return ret_p;
} /* vm_helper_for_in_enumerate_properties_names */
/**
* RegExp helper function to start the recursive matching algorithm
* and create the result Array object
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value
*/
ecma_completion_value_t
ecma_regexp_exec_helper (ecma_value_t regexp_value, /**< RegExp object */
ecma_value_t input_string, /**< input string */
bool ignore_global) /**< ignore global flag */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
JERRY_ASSERT (ecma_is_value_object (regexp_value));
JERRY_ASSERT (ecma_is_value_string (input_string));
ecma_object_t *regexp_object_p = ecma_get_object_from_value (regexp_value);
JERRY_ASSERT (ecma_object_get_class_name (regexp_object_p) == LIT_MAGIC_STRING_REGEXP_UL);
ecma_property_t *bytecode_prop_p = ecma_get_internal_property (regexp_object_p,
ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE);
re_bytecode_t *bc_p = ECMA_GET_POINTER (re_bytecode_t, bytecode_prop_p->u.internal_property.value);
ecma_string_t *input_string_p = ecma_get_string_from_value (input_string);
lit_utf8_size_t input_string_size = ecma_string_get_size (input_string_p);
MEM_DEFINE_LOCAL_ARRAY (input_utf8_buffer_p, input_string_size, lit_utf8_byte_t);
ecma_string_to_utf8_string (input_string_p, input_utf8_buffer_p, (ssize_t) input_string_size);
lit_utf8_iterator_t iterator = lit_utf8_iterator_create (input_utf8_buffer_p, input_string_size);
re_matcher_ctx_t re_ctx;
re_ctx.input_start_p = iterator.buf_p;
re_ctx.input_end_p = iterator.buf_p + iterator.buf_size;
/* 1. Read bytecode header and init regexp matcher context. */
re_ctx.flags = (uint8_t) re_get_value (&bc_p);
if (ignore_global)
{
re_ctx.flags &= (uint8_t) ~RE_FLAG_GLOBAL;
}
JERRY_DDLOG ("Exec with flags [global: %d, ignoreCase: %d, multiline: %d]\n",
re_ctx.flags & RE_FLAG_GLOBAL,
re_ctx.flags & RE_FLAG_IGNORE_CASE,
re_ctx.flags & RE_FLAG_MULTILINE);
re_ctx.num_of_captures = re_get_value (&bc_p);
JERRY_ASSERT (re_ctx.num_of_captures % 2 == 0);
re_ctx.num_of_non_captures = re_get_value (&bc_p);
/* We create an invalid iterator, that will be used to identify unused result values. */
lit_utf8_iterator_t unused_iter = lit_utf8_iterator_create (NULL, 0);
unused_iter.buf_p = (lit_utf8_byte_t *) 1;
MEM_DEFINE_LOCAL_ARRAY (saved_p, re_ctx.num_of_captures + re_ctx.num_of_non_captures, lit_utf8_iterator_t);
for (uint32_t i = 0; i < re_ctx.num_of_captures + re_ctx.num_of_non_captures; i++)
{
saved_p[i] = unused_iter;
}
re_ctx.saved_p = saved_p;
uint32_t num_of_iter_length = (re_ctx.num_of_captures / 2) + (re_ctx.num_of_non_captures - 1);
MEM_DEFINE_LOCAL_ARRAY (num_of_iter_p, num_of_iter_length, uint32_t);
for (uint32_t i = 0; i < num_of_iter_length; i++)
{
num_of_iter_p[i] = 0u;
}
bool is_match = false;
re_ctx.num_of_iterations_p = num_of_iter_p;
int32_t index = 0;
ecma_length_t input_str_len = lit_utf8_string_length (iterator.buf_p, iterator.buf_size);
if (iterator.buf_p && (re_ctx.flags & RE_FLAG_GLOBAL))
{
ecma_string_t *magic_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_LASTINDEX_UL);
ecma_property_t *lastindex_prop_p = ecma_op_object_get_property (regexp_object_p, magic_str_p);
ECMA_OP_TO_NUMBER_TRY_CATCH (lastindex_num, lastindex_prop_p->u.named_data_property.value, ret_value)
index = ecma_number_to_int32 (lastindex_num);
JERRY_ASSERT (iterator.buf_pos.offset == 0 && !iterator.buf_pos.is_non_bmp_middle);
if (!lit_utf8_iterator_is_eos (&iterator)
&& index <= (int32_t) input_str_len
&& index > 0)
{
lit_utf8_iterator_advance (&iterator, (ecma_length_t) index);
}
ECMA_OP_TO_NUMBER_FINALIZE (lastindex_num);
ecma_deref_ecma_string (magic_str_p);
}
/* 2. Try to match */
lit_utf8_iterator_t sub_iter = lit_utf8_iterator_create (NULL, 0);
while (ecma_is_completion_value_empty (ret_value))
{
if (index < 0 || index > (int32_t) input_str_len)
{
if (re_ctx.flags & RE_FLAG_GLOBAL)
{
ecma_string_t *magic_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_LASTINDEX_UL);
ecma_number_t *lastindex_num_p = ecma_alloc_number ();
*lastindex_num_p = ECMA_NUMBER_ZERO;
ecma_op_object_put (regexp_object_p, magic_str_p, ecma_make_number_value (lastindex_num_p), true);
ecma_dealloc_number (lastindex_num_p);
ecma_deref_ecma_string (magic_str_p);
}
is_match = false;
break;
}
else
{
ECMA_TRY_CATCH (match_value, re_match_regexp (&re_ctx, bc_p, iterator, &sub_iter), ret_value);
if (ecma_is_value_true (match_value))
{
is_match = true;
break;
}
if (!lit_utf8_iterator_is_eos (&iterator))
{
lit_utf8_iterator_advance (&iterator, 1);
}
index++;
ECMA_FINALIZE (match_value);
}
}
if (iterator.buf_p && (re_ctx.flags & RE_FLAG_GLOBAL))
{
ecma_string_t *magic_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_LASTINDEX_UL);
ecma_number_t *lastindex_num_p = ecma_alloc_number ();
*lastindex_num_p = sub_iter.buf_pos.offset;
ecma_op_object_put (regexp_object_p, magic_str_p, ecma_make_number_value (lastindex_num_p), true);
ecma_dealloc_number (lastindex_num_p);
ecma_deref_ecma_string (magic_str_p);
}
/* 3. Fill the result array or return with 'undefiend' */
if (ecma_is_completion_value_empty (ret_value))
{
if (is_match)
{
ecma_completion_value_t result_array = ecma_op_create_array_object (0, 0, false);
ecma_object_t *result_array_obj_p = ecma_get_object_from_completion_value (result_array);
ecma_string_t *input_str_p = ecma_new_ecma_string_from_utf8 (iterator.buf_p, iterator.buf_size);
re_set_result_array_properties (result_array_obj_p, input_str_p, re_ctx.num_of_captures / 2, index);
ecma_deref_ecma_string (input_str_p);
for (uint32_t i = 0; i < re_ctx.num_of_captures; i += 2)
{
ecma_string_t *index_str_p = ecma_new_ecma_string_from_uint32 (i / 2);
/* Note: 'iter_p->buf_p == NULL' means the input is empty string */
if ((re_ctx.saved_p[i].buf_p != unused_iter.buf_p && re_ctx.saved_p[i + 1].buf_p != unused_iter.buf_p)
&& re_ctx.saved_p[i + 1].buf_pos.offset >= re_ctx.saved_p[i].buf_pos.offset)
{
ecma_length_t capture_str_len;
capture_str_len = (ecma_length_t) re_ctx.saved_p[i + 1].buf_pos.offset - re_ctx.saved_p[i].buf_pos.offset;
ecma_string_t *capture_str_p;
if (capture_str_len > 0)
{
const lit_utf8_byte_t *utf8_str_p = re_ctx.saved_p[i].buf_p + re_ctx.saved_p[i].buf_pos.offset;
capture_str_p = ecma_new_ecma_string_from_utf8 (utf8_str_p, capture_str_len);
}
else
{
capture_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);
}
ecma_op_object_put (result_array_obj_p, index_str_p, ecma_make_string_value (capture_str_p), true);
ecma_deref_ecma_string (capture_str_p);
}
else
{
ecma_op_object_put (result_array_obj_p,
index_str_p,
ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED),
true);
}
ecma_deref_ecma_string (index_str_p);
}
ret_value = result_array;
}
else
{
ret_value = ecma_make_normal_completion_value (ecma_make_simple_value (ECMA_SIMPLE_VALUE_NULL));
}
}
MEM_FINALIZE_LOCAL_ARRAY (num_of_iter_p);
MEM_FINALIZE_LOCAL_ARRAY (saved_p);
MEM_FINALIZE_LOCAL_ARRAY (input_utf8_buffer_p);
return ret_value;
} /* ecma_regexp_exec_helper */
/**
* The RegExp.prototype object's 'compile' routine
*
* See also:
* ECMA-262 v5, B.2.5.1
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_regexp_prototype_compile (ecma_value_t this_arg, /**< this argument */
ecma_value_t pattern_arg, /**< pattern or RegExp object */
ecma_value_t flags_arg) /**< flags */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
ecma_object_t *this_obj_p = ecma_get_object_from_value (this_arg);
if (ecma_object_get_class_name (this_obj_p) != LIT_MAGIC_STRING_REGEXP_UL)
{
/* Compile can only be called on RegExp objects. */
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_TYPE));
}
else
{
ecma_string_t *pattern_string_p = NULL;
uint16_t flags = 0;
if (ecma_is_value_object (pattern_arg)
&& ecma_object_get_class_name (ecma_get_object_from_value (pattern_arg)) == LIT_MAGIC_STRING_REGEXP_UL)
{
if (!ecma_is_value_undefined (flags_arg))
{
ret_value = ecma_raise_type_error ("Invalid argument of RegExp compile.");
}
else
{
/* Compile from existing RegExp pbject. */
ecma_object_t *target_p = ecma_get_object_from_value (pattern_arg);
/* Get source. */
ecma_string_t *magic_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_SOURCE);
ecma_property_t *prop_p = ecma_get_named_data_property (target_p, magic_string_p);
pattern_string_p = ecma_get_string_from_value (ecma_get_named_data_property_value (prop_p));
ecma_deref_ecma_string (magic_string_p);
/* Get flags. */
magic_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_GLOBAL);
prop_p = ecma_get_named_data_property (target_p, magic_string_p);
if (ecma_is_value_true (ecma_get_named_data_property_value (prop_p)))
{
flags |= RE_FLAG_GLOBAL;
}
ecma_deref_ecma_string (magic_string_p);
magic_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_IGNORECASE_UL);
prop_p = ecma_get_named_data_property (target_p, magic_string_p);
if (ecma_is_value_true (ecma_get_named_data_property_value (prop_p)))
{
flags |= RE_FLAG_IGNORE_CASE;
}
ecma_deref_ecma_string (magic_string_p);
magic_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_MULTILINE);
prop_p = ecma_get_named_data_property (target_p, magic_string_p);
if (ecma_is_value_true (ecma_get_named_data_property_value (prop_p)))
{
flags |= RE_FLAG_MULTILINE;
}
ecma_deref_ecma_string (magic_string_p);
/* Get bytecode property. */
ecma_property_t *bc_prop_p = ecma_get_internal_property (this_obj_p,
ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE);
/* FIXME: "We currently have to re-compile the bytecode, because
* we can't copy it without knowing its length."
*/
re_compiled_code_t *new_bc_p = NULL;
ecma_completion_value_t bc_comp = re_compile_bytecode (&new_bc_p, pattern_string_p, flags);
/* Should always succeed, since we're compiling from a source that has been compiled previously. */
JERRY_ASSERT (ecma_is_completion_value_empty (bc_comp));
re_compiled_code_t *old_bc_p = ECMA_GET_POINTER (re_compiled_code_t,
bc_prop_p->u.internal_property.value);
if (old_bc_p != NULL)
{
/* Free the old bytecode */
ecma_bytecode_deref ((ecma_compiled_code_t *) old_bc_p);
}
ECMA_SET_POINTER (bc_prop_p->u.internal_property.value, new_bc_p);
re_initialize_props (this_obj_p, pattern_string_p, flags);
ret_value = ecma_make_normal_completion_value (ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED));
}
}
else
{
/* Get source string. */
if (!ecma_is_value_undefined (pattern_arg))
{
ECMA_TRY_CATCH (regexp_str_value,
ecma_op_to_string (pattern_arg),
ret_value);
if (ecma_string_get_length (ecma_get_string_from_value (regexp_str_value)) == 0)
{
pattern_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_EMPTY_NON_CAPTURE_GROUP);
}
else
{
pattern_string_p = ecma_copy_or_ref_ecma_string (ecma_get_string_from_value (regexp_str_value));
}
ECMA_FINALIZE (regexp_str_value);
}
else
{
pattern_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_EMPTY_NON_CAPTURE_GROUP);
}
/* Parse flags. */
if (ecma_is_completion_value_empty (ret_value) && !ecma_is_value_undefined (flags_arg))
{
ECMA_TRY_CATCH (flags_str_value,
ecma_op_to_string (flags_arg),
ret_value);
ECMA_TRY_CATCH (flags_dummy,
re_parse_regexp_flags (ecma_get_string_from_value (flags_str_value), &flags),
ret_value);
ECMA_FINALIZE (flags_dummy);
ECMA_FINALIZE (flags_str_value);
}
if (ecma_is_completion_value_empty (ret_value))
{
ecma_property_t *bc_prop_p = ecma_get_internal_property (this_obj_p,
ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE);
/* Try to compile bytecode from new source. */
re_compiled_code_t *new_bc_p = NULL;
ECMA_TRY_CATCH (bc_dummy,
re_compile_bytecode (&new_bc_p, pattern_string_p, flags),
ret_value);
re_compiled_code_t *old_bc_p = ECMA_GET_POINTER (re_compiled_code_t,
bc_prop_p->u.internal_property.value);
if (old_bc_p != NULL)
{
/* Free the old bytecode */
ecma_bytecode_deref ((ecma_compiled_code_t *) old_bc_p);
}
ECMA_SET_POINTER (bc_prop_p->u.internal_property.value, new_bc_p);
re_initialize_props (this_obj_p, pattern_string_p, flags);
ret_value = ecma_make_normal_completion_value (ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED));
ECMA_FINALIZE (bc_dummy);
}
if (pattern_string_p != NULL)
{
ecma_deref_ecma_string (pattern_string_p);
}
}
}
return ret_value;
} /* ecma_builtin_regexp_prototype_compile */
/**
* Setup variables for arguments listed in formal parameter list,
* and, if necessary, Arguments object with 'arguments' binding.
*
* See also:
* Declaration binding instantiation (ECMA-262 v5, 10.5), block 4 and 7
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value
*/
static ecma_completion_value_t
ecma_function_call_setup_args_variables (ecma_object_t *func_obj_p, /**< Function object */
ecma_object_t *env_p, /**< lexical environment */
const ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len, /**< length of argument list */
bool is_strict, /**< flag indicating strict mode */
bool do_instantiate_arguments_object) /**< flag indicating whether
* Arguments object should be
* instantiated */
{
ecma_property_t *formal_parameters_prop_p = ecma_get_internal_property (func_obj_p,
ECMA_INTERNAL_PROPERTY_FORMAL_PARAMETERS);
ecma_collection_header_t *formal_parameters_p;
formal_parameters_p = ECMA_GET_POINTER (ecma_collection_header_t,
formal_parameters_prop_p->u.internal_property.value);
if (formal_parameters_p != NULL)
{
ecma_length_t formal_parameters_count = formal_parameters_p->unit_number;
ecma_collection_iterator_t formal_params_iterator;
ecma_collection_iterator_init (&formal_params_iterator, formal_parameters_p);
/*
* Formal parameter list is stored in reversed order
*
* Although, specification defines ascending order of formal parameters list enumeration,
* implementation enumerates the parameters in descending order.
*
* In the case, redundant SetMutableBinding invocation could be avoided.
*/
for (ssize_t n = (ssize_t) formal_parameters_count - 1;
n >= 0;
n--)
{
ecma_value_t v;
if (n >= (ssize_t) arguments_list_len)
{
v = ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED);
}
else
{
v = arguments_list_p[n];
}
bool is_moved = ecma_collection_iterator_next (&formal_params_iterator);
JERRY_ASSERT (is_moved);
ecma_value_t formal_parameter_name_value = *formal_params_iterator.current_value_p;
ecma_string_t *formal_parameter_name_string_p = ecma_get_string_from_value (formal_parameter_name_value);
bool arg_already_declared = ecma_op_has_binding (env_p, formal_parameter_name_string_p);
if (!arg_already_declared)
{
ecma_completion_value_t completion = ecma_op_create_mutable_binding (env_p,
formal_parameter_name_string_p,
false);
if (ecma_is_completion_value_throw (completion))
{
return completion;
}
JERRY_ASSERT (ecma_is_completion_value_empty (completion));
completion = ecma_op_set_mutable_binding (env_p,
formal_parameter_name_string_p,
v,
is_strict);
if (ecma_is_completion_value_throw (completion))
{
return completion;
}
JERRY_ASSERT (ecma_is_completion_value_empty (completion));
}
}
}
if (do_instantiate_arguments_object)
{
/*
* According to ECMA-262 v5, 10.5, the Arguments object should be instantiated
* after instantiating declared functions, and only if there is no binding named 'arguments'
* by that time.
*
* However, we can setup Arguments object and 'arguments' binding here, because:
* - instantiation of Arguments object itself doesn't have any side effects;
* - if 'arguments' is name of a declared function in current scope,
* value of the binding would be overwritten, execution would proceed in correct state.
* - declaration of function, named 'arguments', is considered to be unrecommended (and so, rare) case,
* so instantiation of Arguments object here, in general, is supposed to not affect resource consumption
* significantly.
*/
ecma_string_t *arguments_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_ARGUMENTS);
bool binding_already_declared = ecma_op_has_binding (env_p, arguments_string_p);
if (!binding_already_declared)
{
ecma_object_t *args_obj_p = ecma_op_create_arguments_object (func_obj_p,
env_p,
formal_parameters_p,
arguments_list_p,
arguments_list_len,
is_strict);
if (is_strict)
{
ecma_op_create_immutable_binding (env_p, arguments_string_p);
ecma_op_initialize_immutable_binding (env_p, arguments_string_p, ecma_make_object_value (args_obj_p));
}
else
{
ecma_completion_value_t completion = ecma_op_create_mutable_binding (env_p,
arguments_string_p,
false);
JERRY_ASSERT (ecma_is_completion_value_empty (completion));
completion = ecma_op_set_mutable_binding (env_p,
arguments_string_p,
ecma_make_object_value (args_obj_p),
false);
JERRY_ASSERT (ecma_is_completion_value_empty (completion));
}
ecma_deref_object (args_obj_p);
}
ecma_deref_ecma_string (arguments_string_p);
}
return ecma_make_empty_completion_value ();
} /* ecma_function_call_setup_args_variables */