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jerryscript/src/libecmabuiltins/ecma-builtin-object-object.c
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/* Copyright 2014 Samsung Electronics Co., Ltd.
*
* 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.
*/
#include "ecma-alloc.h"
#include "ecma-builtins.h"
#include "ecma-conversion.h"
#include "ecma-exceptions.h"
#include "ecma-gc.h"
#include "ecma-globals.h"
#include "ecma-helpers.h"
#include "ecma-objects.h"
#include "ecma-objects-general.h"
#include "ecma-try-catch-macro.h"
#include "globals.h"
#define ECMA_BUILTINS_INTERNAL
#include "ecma-builtins-internal.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmabuiltins
* @{
*
* \addtogroup object ECMA Object object built-in
* @{
*/
/**
* List of the Object object's built-in property names
*/
static const ecma_magic_string_id_t ecma_builtin_object_property_names[] =
{
ECMA_MAGIC_STRING_PROTOTYPE,
ECMA_MAGIC_STRING_LENGTH,
ECMA_MAGIC_STRING_GET_PROTOTYPE_OF_UL,
ECMA_MAGIC_STRING_GET_OWN_PROPERTY_DESCRIPTOR_UL,
ECMA_MAGIC_STRING_GET_OWN_PROPERTY_NAMES_UL,
ECMA_MAGIC_STRING_CREATE,
ECMA_MAGIC_STRING_DEFINE_PROPERTY_UL,
ECMA_MAGIC_STRING_DEFINE_PROPERTIES_UL,
ECMA_MAGIC_STRING_SEAL,
ECMA_MAGIC_STRING_FREEZE,
ECMA_MAGIC_STRING_PREVENT_EXTENSIONS_UL,
ECMA_MAGIC_STRING_IS_SEALED_UL,
ECMA_MAGIC_STRING_IS_FROZEN_UL,
ECMA_MAGIC_STRING_IS_EXTENSIBLE,
ECMA_MAGIC_STRING_KEYS
};
/**
* Number of the Object object's built-in properties
*/
const ecma_length_t ecma_builtin_object_property_number = (sizeof (ecma_builtin_object_property_names) /
sizeof (ecma_magic_string_id_t));
JERRY_STATIC_ASSERT (sizeof (ecma_builtin_object_property_names) > sizeof (void*));
/**
* Get number of routine's parameters
*
* @return number of parameters
*/
ecma_length_t
ecma_builtin_object_get_routine_parameters_number (ecma_magic_string_id_t builtin_routine_id) /**< built-in routine's
name */
{
switch (builtin_routine_id)
{
case ECMA_MAGIC_STRING_GET_PROTOTYPE_OF_UL:
case ECMA_MAGIC_STRING_GET_OWN_PROPERTY_NAMES_UL:
case ECMA_MAGIC_STRING_SEAL:
case ECMA_MAGIC_STRING_FREEZE:
case ECMA_MAGIC_STRING_PREVENT_EXTENSIONS_UL:
case ECMA_MAGIC_STRING_IS_SEALED_UL:
case ECMA_MAGIC_STRING_IS_FROZEN_UL:
case ECMA_MAGIC_STRING_IS_EXTENSIBLE:
case ECMA_MAGIC_STRING_KEYS:
{
return 1;
}
case ECMA_MAGIC_STRING_GET_OWN_PROPERTY_DESCRIPTOR_UL:
case ECMA_MAGIC_STRING_CREATE:
case ECMA_MAGIC_STRING_DEFINE_PROPERTIES_UL:
{
return 2;
}
case ECMA_MAGIC_STRING_DEFINE_PROPERTY_UL:
{
return 3;
}
default:
{
JERRY_UNREACHABLE ();
}
}
} /* ecma_builtin_object_get_routine_parameters_number */
/**
* Handle calling [[Call]] of built-in Object object
*
* @return completion-value
*/
ecma_completion_value_t
ecma_builtin_object_dispatch_call (ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
ecma_completion_value_t ret_value;
if (arguments_list_len == 0
|| ecma_is_value_undefined (arguments_list_p[0])
|| ecma_is_value_null (arguments_list_p [0]))
{
ret_value = ecma_builtin_object_dispatch_construct (arguments_list_p, arguments_list_len);
}
else
{
ret_value = ecma_op_to_object (arguments_list_p [0]);
}
return ret_value;
} /* ecma_builtin_object_dispatch_call */
/**
* Handle calling [[Construct]] of built-in Object object
*
* @return completion-value
*/
ecma_completion_value_t
ecma_builtin_object_dispatch_construct (ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
if (arguments_list_len == 0)
{
ecma_object_t *obj_p = ecma_op_create_object_object_noarg ();
return ecma_make_normal_completion_value (ecma_make_object_value (obj_p));
}
else
{
ecma_completion_value_t new_obj_value = ecma_op_create_object_object_arg (arguments_list_p [0]);
if (!ecma_is_completion_value_normal (new_obj_value))
{
return new_obj_value;
}
else
{
return ecma_make_normal_completion_value (new_obj_value.u.value);
}
}
} /* ecma_builtin_object_dispatch_construct */
/**
* The Object object's 'getPrototypeOf' routine
*
* See also:
* ECMA-262 v5, 15.2.3.2
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_get_prototype_of (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_get_prototype_of */
/**
* The Object object's 'getOwnPropertyNames' routine
*
* See also:
* ECMA-262 v5, 15.2.3.4
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_get_own_property_names (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_get_own_property_names */
/**
* The Object object's 'seal' routine
*
* See also:
* ECMA-262 v5, 15.2.3.8
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_seal (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_seal */
/**
* The Object object's 'freeze' routine
*
* See also:
* ECMA-262 v5, 15.2.3.9
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_freeze (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_freeze */
/**
* The Object object's 'preventExtensions' routine
*
* See also:
* ECMA-262 v5, 15.2.3.10
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_prevent_extensions (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_prevent_extensions */
/**
* The Object object's 'isSealed' routine
*
* See also:
* ECMA-262 v5, 15.2.3.11
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_is_sealed (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_is_sealed */
/**
* The Object object's 'isFrozen' routine
*
* See also:
* ECMA-262 v5, 15.2.3.12
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_is_frozen (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_is_frozen */
/**
* The Object object's 'isExtensible' routine
*
* See also:
* ECMA-262 v5, 15.2.3.13
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_is_extensible (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_is_extensible */
/**
* The Object object's 'keys' routine
*
* See also:
* ECMA-262 v5, 15.2.3.14
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_keys (ecma_value_t arg) /**< routine's argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg);
} /* ecma_builtin_object_object_keys */
/**
* The Object object's 'getOwnPropertyDescriptor' routine
*
* See also:
* ECMA-262 v5, 15.2.3.3
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_get_own_property_descriptor (ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg1, arg2);
} /* ecma_builtin_object_object_get_own_property_descriptor */
/**
* The Object object's 'create' routine
*
* See also:
* ECMA-262 v5, 15.2.3.5
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_create (ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg1, arg2);
} /* ecma_builtin_object_object_create */
/**
* The Object object's 'defineProperties' routine
*
* See also:
* ECMA-262 v5, 15.2.3.7
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_define_properties (ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
JERRY_UNIMPLEMENTED_REF_UNUSED_VARS (arg1, arg2);
} /* ecma_builtin_object_object_define_properties */
/**
* The Object object's 'defineProperty' routine
*
* See also:
* ECMA-262 v5, 15.2.3.6
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_define_property (ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2, /**< routine's second argument */
ecma_value_t arg3) /**< routine's third argument */
{
ecma_completion_value_t ret_value;
if (arg1.value_type != ECMA_TYPE_OBJECT)
{
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_TYPE));
}
else
{
ecma_object_t *obj_p = ECMA_GET_POINTER (arg1.value);
ECMA_TRY_CATCH (name_str_value,
ecma_op_to_string (arg2),
ret_value);
ecma_string_t *name_str_p = ECMA_GET_POINTER (name_str_value.u.value.value);
ecma_property_descriptor_t prop_desc;
ECMA_TRY_CATCH (conv_result,
ecma_op_to_property_descriptor (arg3, &prop_desc),
ret_value);
ECMA_TRY_CATCH (define_own_prop_ret,
ecma_op_object_define_own_property (obj_p,
name_str_p,
prop_desc,
true),
ret_value);
ret_value = ecma_make_normal_completion_value (ecma_copy_value (arg1, true));
ECMA_FINALIZE (define_own_prop_ret);
ecma_free_property_descriptor (&prop_desc);
ECMA_FINALIZE (conv_result);
ECMA_FINALIZE (name_str_value);
}
return ret_value;
} /* ecma_builtin_object_object_define_property */
/**
* Dispatcher of the Object object's built-in routines
*
* @return completion-value
* Returned value must be freed with ecma_free_completion_value.
*/
ecma_completion_value_t
ecma_builtin_object_dispatch_routine (ecma_magic_string_id_t builtin_routine_id, /**< Object object's
built-in routine's name */
ecma_value_t this_arg_value __unused, /**< 'this' argument value */
ecma_value_t arguments_list [], /**< list of arguments passed to routine */
ecma_length_t arguments_number) /**< length of arguments' list */
{
const ecma_value_t value_undefined = ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED);
switch (builtin_routine_id)
{
case ECMA_MAGIC_STRING_GET_PROTOTYPE_OF_UL:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_get_prototype_of (arg);
}
case ECMA_MAGIC_STRING_GET_OWN_PROPERTY_NAMES_UL:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_get_own_property_names (arg);
}
case ECMA_MAGIC_STRING_SEAL:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_seal (arg);
}
case ECMA_MAGIC_STRING_FREEZE:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_freeze (arg);
}
case ECMA_MAGIC_STRING_PREVENT_EXTENSIONS_UL:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_prevent_extensions (arg);
}
case ECMA_MAGIC_STRING_IS_SEALED_UL:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_is_sealed (arg);
}
case ECMA_MAGIC_STRING_IS_FROZEN_UL:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_is_frozen (arg);
}
case ECMA_MAGIC_STRING_IS_EXTENSIBLE:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_is_extensible (arg);
}
case ECMA_MAGIC_STRING_KEYS:
{
ecma_value_t arg = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
return ecma_builtin_object_object_keys (arg);
}
case ECMA_MAGIC_STRING_GET_OWN_PROPERTY_DESCRIPTOR_UL:
{
ecma_value_t arg1 = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
ecma_value_t arg2 = (arguments_number >= 2 ? arguments_list[1] : value_undefined);
return ecma_builtin_object_object_get_own_property_descriptor (arg1, arg2);
}
case ECMA_MAGIC_STRING_CREATE:
{
ecma_value_t arg1 = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
ecma_value_t arg2 = (arguments_number >= 2 ? arguments_list[1] : value_undefined);
return ecma_builtin_object_object_create (arg1, arg2);
}
case ECMA_MAGIC_STRING_DEFINE_PROPERTIES_UL:
{
ecma_value_t arg1 = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
ecma_value_t arg2 = (arguments_number >= 2 ? arguments_list[1] : value_undefined);
return ecma_builtin_object_object_define_properties (arg1, arg2);
}
case ECMA_MAGIC_STRING_DEFINE_PROPERTY_UL:
{
ecma_value_t arg1 = (arguments_number >= 1 ? arguments_list[0] : value_undefined);
ecma_value_t arg2 = (arguments_number >= 2 ? arguments_list[1] : value_undefined);
ecma_value_t arg3 = (arguments_number >= 3 ? arguments_list[2] : value_undefined);
return ecma_builtin_object_object_define_property (arg1, arg2, arg3);
}
default:
{
JERRY_UNREACHABLE ();
}
}
} /* ecma_builtin_object_dispatch_routine */
/**
* If the property's name is one of built-in properties of the Object object
* that is not instantiated yet, instantiate the property and
* return pointer to the instantiated property.
*
* @return pointer property, if one was instantiated,
* NULL - otherwise.
*/
ecma_property_t*
ecma_builtin_object_try_to_instantiate_property (ecma_object_t *obj_p, /**< object */
ecma_string_t *prop_name_p) /**< property's name */
{
JERRY_ASSERT (ecma_builtin_is (obj_p, ECMA_BUILTIN_ID_OBJECT));
JERRY_ASSERT (ecma_find_named_property (obj_p, prop_name_p) == NULL);
ecma_magic_string_id_t id;
if (!ecma_is_string_magic (prop_name_p, &id))
{
return NULL;
}
int32_t index = ecma_builtin_bin_search_for_magic_string_id_in_array (ecma_builtin_object_property_names,
ecma_builtin_object_property_number,
id);
if (index == -1)
{
return NULL;
}
JERRY_ASSERT (index >= 0 && (uint32_t) index < sizeof (uint32_t) * JERRY_BITSINBYTE);
uint32_t bit = (uint32_t) 1u << index;
ecma_property_t *mask_0_31_prop_p;
mask_0_31_prop_p = ecma_get_internal_property (obj_p,
ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_0_31);
uint32_t bit_mask = mask_0_31_prop_p->u.internal_property.value;
if (!(bit_mask & bit))
{
return NULL;
}
bit_mask &= ~bit;
mask_0_31_prop_p->u.internal_property.value = bit_mask;
ecma_value_t value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
ecma_property_writable_value_t writable = ECMA_PROPERTY_WRITABLE;
ecma_property_enumerable_value_t enumerable = ECMA_PROPERTY_NOT_ENUMERABLE;
ecma_property_configurable_value_t configurable = ECMA_PROPERTY_CONFIGURABLE;
switch (id)
{
case ECMA_MAGIC_STRING_GET_PROTOTYPE_OF_UL:
case ECMA_MAGIC_STRING_GET_OWN_PROPERTY_NAMES_UL:
case ECMA_MAGIC_STRING_SEAL:
case ECMA_MAGIC_STRING_FREEZE:
case ECMA_MAGIC_STRING_PREVENT_EXTENSIONS_UL:
case ECMA_MAGIC_STRING_IS_SEALED_UL:
case ECMA_MAGIC_STRING_IS_FROZEN_UL:
case ECMA_MAGIC_STRING_IS_EXTENSIBLE:
case ECMA_MAGIC_STRING_KEYS:
case ECMA_MAGIC_STRING_GET_OWN_PROPERTY_DESCRIPTOR_UL:
case ECMA_MAGIC_STRING_CREATE:
case ECMA_MAGIC_STRING_DEFINE_PROPERTY_UL:
case ECMA_MAGIC_STRING_DEFINE_PROPERTIES_UL:
{
ecma_object_t *func_obj_p = ecma_builtin_make_function_object_for_routine (ECMA_BUILTIN_ID_OBJECT,
id);
value = ecma_make_object_value (func_obj_p);
break;
}
case ECMA_MAGIC_STRING_PROTOTYPE:
{
JERRY_UNIMPLEMENTED ();
writable = ECMA_PROPERTY_NOT_WRITABLE;
enumerable = ECMA_PROPERTY_NOT_ENUMERABLE;
configurable = ECMA_PROPERTY_NOT_CONFIGURABLE;
break;
}
case ECMA_MAGIC_STRING_LENGTH:
{
ecma_number_t *num_p = ecma_alloc_number ();
*num_p = ECMA_NUMBER_ONE;
value = ecma_make_number_value (num_p);
writable = ECMA_PROPERTY_NOT_WRITABLE;
enumerable = ECMA_PROPERTY_NOT_ENUMERABLE;
configurable = ECMA_PROPERTY_NOT_CONFIGURABLE;
break;
}
default:
{
JERRY_UNREACHABLE ();
}
}
ecma_property_t *prop_p = ecma_create_named_data_property (obj_p,
prop_name_p,
writable,
enumerable,
configurable);
prop_p->u.named_data_property.value = ecma_copy_value (value, false);
ecma_gc_update_may_ref_younger_object_flag_by_value (obj_p,
prop_p->u.named_data_property.value);
ecma_free_value (value, true);
return prop_p;
} /* ecma_builtin_object_try_to_instantiate_property */
/**
* @}
* @}
* @}
*/
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