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jerryscript/jerry-core/ecma/builtin-objects/ecma-builtin-object.c
Szilagyi Adam 4240b740aa
Implement Object.prototype.__proto__ accessor property (#3546) 
We are using the already existing Object.getPrototypeOf and
Object.setProtoypeOf methods

JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu
2020-03-27 14:46:51 +01:00

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/* 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.
*/
#include "ecma-alloc.h"
#include "ecma-builtin-helpers.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-proxy-object.h"
#include "ecma-objects-general.h"
#include "jrt.h"
#include "ecma-builtin-object.h"
#define ECMA_BUILTINS_INTERNAL
#include "ecma-builtins-internal.h"
/**
* This object has a custom dispatch function.
*/
#define BUILTIN_CUSTOM_DISPATCH
/**
* List of built-in routine identifiers.
*/
enum
{
ECMA_OBJECT_ROUTINE_START = ECMA_BUILTIN_ID__COUNT - 1,
ECMA_OBJECT_ROUTINE_CREATE,
ECMA_OBJECT_ROUTINE_IS,
ECMA_OBJECT_ROUTINE_SET_PROTOTYPE_OF,
/* These should be in this order. */
ECMA_OBJECT_ROUTINE_DEFINE_PROPERTY,
ECMA_OBJECT_ROUTINE_DEFINE_PROPERTIES,
/* These should be in this order. */
ECMA_OBJECT_ROUTINE_ASSIGN,
ECMA_OBJECT_ROUTINE_GET_OWN_PROPERTY_DESCRIPTOR,
ECMA_OBJECT_ROUTINE_GET_OWN_PROPERTY_NAMES,
ECMA_OBJECT_ROUTINE_GET_OWN_PROPERTY_SYMBOLS,
ECMA_OBJECT_ROUTINE_GET_PROTOTYPE_OF,
ECMA_OBJECT_ROUTINE_KEYS,
/* These should be in this order. */
ECMA_OBJECT_ROUTINE_FREEZE,
ECMA_OBJECT_ROUTINE_PREVENT_EXTENSIONS,
ECMA_OBJECT_ROUTINE_SEAL,
/* These should be in this order. */
ECMA_OBJECT_ROUTINE_IS_EXTENSIBLE,
ECMA_OBJECT_ROUTINE_IS_FROZEN,
ECMA_OBJECT_ROUTINE_IS_SEALED,
};
#define BUILTIN_INC_HEADER_NAME "ecma-builtin-object.inc.h"
#define BUILTIN_UNDERSCORED_ID object
#include "ecma-builtin-internal-routines-template.inc.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmabuiltins
* @{
*
* \addtogroup object ECMA Object object built-in
* @{
*/
/**
* Handle calling [[Call]] of built-in Object object
*
* @return ecma value
*/
ecma_value_t
ecma_builtin_object_dispatch_call (const 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_is_value_undefined (arguments_list_p[0])
|| ecma_is_value_null (arguments_list_p[0]))
{
return ecma_builtin_object_dispatch_construct (arguments_list_p, arguments_list_len);
}
return ecma_op_to_object (arguments_list_p[0]);
} /* ecma_builtin_object_dispatch_call */
/**
* Handle calling [[Construct]] of built-in Object object
*
* @return ecma value
*/
ecma_value_t
ecma_builtin_object_dispatch_construct (const 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_object_value (obj_p);
}
return ecma_op_create_object_object_arg (arguments_list_p[0]);
} /* ecma_builtin_object_dispatch_construct */
/**
* The Object object's 'getPrototypeOf' routine
*
* See also:
* ECMA-262 v5, 15.2.3.2
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_object_object_get_prototype_of (ecma_object_t *obj_p) /**< routine's argument */
{
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_OBJECT_IS_PROXY (obj_p))
{
return ecma_proxy_object_get_prototype_of (obj_p);
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
jmem_cpointer_t proto_cp = ecma_op_ordinary_object_get_prototype_of (obj_p);
if (proto_cp != JMEM_CP_NULL)
{
ecma_object_t *prototype_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t, proto_cp);
ecma_ref_object (prototype_p);
return ecma_make_object_value (prototype_p);
}
return ECMA_VALUE_NULL;
} /* ecma_builtin_object_object_get_prototype_of */
#if ENABLED (JERRY_ES2015)
/**
* The Object object's 'setPrototypeOf' routine
*
* See also:
* ES2015 19.1.2.18
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_object_object_set_prototype_of (ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
/* 1., 2. */
if (ECMA_IS_VALUE_ERROR (ecma_op_check_object_coercible (arg1)))
{
return ECMA_VALUE_ERROR;
}
/* 3. */
if (!ecma_is_value_object (arg2) && !ecma_is_value_null (arg2))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("proto is neither Object nor Null."));
}
/* 4. */
if (!ecma_is_value_object (arg1))
{
return ecma_copy_value (arg1);
}
ecma_object_t *obj_p = ecma_get_object_from_value (arg1);
ecma_value_t status;
/* 5. */
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_OBJECT_IS_PROXY (obj_p))
{
status = ecma_proxy_object_set_prototype_of (obj_p, arg2);
if (ECMA_IS_VALUE_ERROR (status))
{
return status;
}
}
else
{
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
status = ecma_op_ordinary_object_set_prototype_of (obj_p, arg2);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
if (ecma_is_value_false (status))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Cannot set [[Prototype]]."));
}
JERRY_ASSERT (ecma_is_value_true (status));
ecma_ref_object (obj_p);
return arg1;
} /* ecma_builtin_object_object_set_prototype_of */
/**
* The Object object's set __proto__ routine
*
* See also:
* ECMA-262 v6, B.2.2.1.2
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_object_object_set_proto (ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
/* 1., 2. */
if (ECMA_IS_VALUE_ERROR (ecma_op_check_object_coercible (arg1)))
{
return ECMA_VALUE_ERROR;
}
/* 3. */
if (!ecma_is_value_object (arg2) && !ecma_is_value_null (arg2))
{
return ECMA_VALUE_UNDEFINED;
}
/* 4. */
if (!ecma_is_value_object (arg1))
{
return ECMA_VALUE_UNDEFINED;
}
ecma_object_t *obj_p = ecma_get_object_from_value (arg1);
ecma_value_t status;
/* 5. */
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_OBJECT_IS_PROXY (obj_p))
{
status = ecma_proxy_object_set_prototype_of (obj_p, arg2);
if (ECMA_IS_VALUE_ERROR (status))
{
return status;
}
}
else
{
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
status = ecma_op_ordinary_object_set_prototype_of (obj_p, arg2);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
if (ecma_is_value_false (status))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Cannot set [[Prototype]]."));
}
JERRY_ASSERT (ecma_is_value_true (status));
return ECMA_VALUE_UNDEFINED;
} /* ecma_builtin_object_object_set_proto */
#endif /* ENABLED (JERRY_ES2015) */
/**
* The Object object's 'getOwnPropertyNames' routine
*
* See also:
* ECMA-262 v5, 15.2.3.4
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_get_own_property_names (ecma_object_t *obj_p) /**< routine's argument */
{
return ecma_builtin_helper_object_get_properties (obj_p, ECMA_LIST_NO_OPTS);
} /* ecma_builtin_object_object_get_own_property_names */
#if ENABLED (JERRY_ES2015)
/**
* The Object object's 'getOwnPropertySymbols' routine
*
* See also:
* ECMA-262 v6, 19.1.2.7
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_get_own_property_symbols (ecma_object_t *obj_p) /**< routine's argument */
{
return ecma_builtin_helper_object_get_properties (obj_p, ECMA_LIST_SYMBOLS_ONLY);
} /* ecma_builtin_object_object_get_own_property_symbols */
#endif /* ENABLED (JERRY_ES2015) */
/**
* SetIntegrityLevel operation
*
* See also:
* ECMA-262 v6, 7.3.14
*
* @return ECMA_VALUE_ERROR - if the operation raised an error
* ECMA_VALUE_{TRUE/FALSE} - depends on whether the integrity level has been set sucessfully
*/
static ecma_value_t
ecma_builtin_object_set_integrity_level (ecma_object_t *obj_p, /**< object */
bool is_seal) /**< true - set "sealed"
* false - set "frozen" */
{
/* 3. */
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_OBJECT_IS_PROXY (obj_p))
{
ecma_value_t status = ecma_proxy_object_prevent_extensions (obj_p);
if (!ecma_is_value_true (status))
{
return status;
}
}
else
{
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
ecma_op_ordinary_object_prevent_extensions (obj_p);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
/* 6. */
uint32_t opts = ECMA_LIST_CONVERT_FAST_ARRAYS;
#if ENABLED (JERRY_ES2015)
opts |= ECMA_LIST_SYMBOLS;
#endif /* ENABLED (JERRY_ES2015) */
ecma_collection_t *props_p = ecma_op_object_get_property_names (obj_p, opts);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (props_p == NULL)
{
return ECMA_VALUE_ERROR;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
ecma_value_t *buffer_p = props_p->buffer_p;
if (is_seal)
{
/* 8.a */
for (uint32_t i = 0; i < props_p->item_count; i++)
{
ecma_string_t *property_name_p = ecma_get_prop_name_from_value (buffer_p[i]);
ecma_property_descriptor_t prop_desc;
ecma_value_t status = ecma_op_object_get_own_property_descriptor (obj_p, property_name_p, &prop_desc);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_IS_VALUE_ERROR (status))
{
break;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
if (ecma_is_value_false (status))
{
continue;
}
prop_desc.flags &= (uint16_t) ~ECMA_PROP_IS_CONFIGURABLE;
prop_desc.flags |= ECMA_PROP_IS_THROW;
/* 8.a.i */
ecma_value_t define_own_prop_ret = ecma_op_object_define_own_property (obj_p,
property_name_p,
&prop_desc);
ecma_free_property_descriptor (&prop_desc);
/* 8.a.ii */
if (ECMA_IS_VALUE_ERROR (define_own_prop_ret))
{
ecma_collection_free (props_p);
return define_own_prop_ret;
}
ecma_free_value (define_own_prop_ret);
}
}
else
{
/* 9.a */
for (uint32_t i = 0; i < props_p->item_count; i++)
{
ecma_string_t *property_name_p = ecma_get_prop_name_from_value (buffer_p[i]);
/* 9.1 */
ecma_property_descriptor_t prop_desc;
ecma_value_t status = ecma_op_object_get_own_property_descriptor (obj_p, property_name_p, &prop_desc);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_IS_VALUE_ERROR (status))
{
break;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
if (ecma_is_value_false (status))
{
continue;
}
/* 9.2 */
if ((prop_desc.flags & (ECMA_PROP_IS_WRITABLE_DEFINED | ECMA_PROP_IS_WRITABLE))
== (ECMA_PROP_IS_WRITABLE_DEFINED | ECMA_PROP_IS_WRITABLE))
{
prop_desc.flags &= (uint16_t) ~ECMA_PROP_IS_WRITABLE;
}
prop_desc.flags &= (uint16_t) ~ECMA_PROP_IS_CONFIGURABLE;
prop_desc.flags |= ECMA_PROP_IS_THROW;
/* 9.3 */
ecma_value_t define_own_prop_ret = ecma_op_object_define_own_property (obj_p,
property_name_p,
&prop_desc);
ecma_free_property_descriptor (&prop_desc);
/* 9.4 */
if (ECMA_IS_VALUE_ERROR (define_own_prop_ret))
{
ecma_collection_free (props_p);
return define_own_prop_ret;
}
ecma_free_value (define_own_prop_ret);
}
}
ecma_collection_free (props_p);
return ECMA_VALUE_TRUE;
} /* ecma_builtin_object_set_integrity_level */
/**
* The Object object's 'seal' routine
*
* See also:
* ECMA-262 v5, 15.2.3.8
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_seal (ecma_object_t *obj_p) /**< routine's argument */
{
ecma_value_t status = ecma_builtin_object_set_integrity_level (obj_p, true);
if (ECMA_IS_VALUE_ERROR (status))
{
return status;
}
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ecma_is_value_false (status))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Object cannot be sealed."));
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
/* 4. */
ecma_ref_object (obj_p);
return ecma_make_object_value (obj_p);
} /* ecma_builtin_object_object_seal */
/**
* The Object object's 'freeze' routine
*
* See also:
* ECMA-262 v5, 15.2.3.9
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_freeze (ecma_object_t *obj_p) /**< routine's argument */
{
ecma_value_t status = ecma_builtin_object_set_integrity_level (obj_p, false);
if (ECMA_IS_VALUE_ERROR (status))
{
return status;
}
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ecma_is_value_false (status))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Object cannot be frozen."));
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
/* 4. */
ecma_ref_object (obj_p);
return ecma_make_object_value (obj_p);
} /* ecma_builtin_object_object_freeze */
/**
* The Object object's 'preventExtensions' routine
*
* See also:
* ECMA-262 v5, 15.2.3.10
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_object_object_prevent_extensions (ecma_object_t *obj_p) /**< routine's argument */
{
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_OBJECT_IS_PROXY (obj_p))
{
ecma_value_t status = ecma_proxy_object_prevent_extensions (obj_p);
if (ECMA_IS_VALUE_ERROR (status))
{
return status;
}
if (ecma_is_value_false (status))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Cannot set [[Extensible]] property of the object."));
}
JERRY_ASSERT (ecma_is_value_true (status));
}
else
{
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
ecma_op_ordinary_object_prevent_extensions (obj_p);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
ecma_ref_object (obj_p);
return ecma_make_object_value (obj_p);
} /* ecma_builtin_object_object_prevent_extensions */
/**
* The Object object's 'isSealed' and 'isFrozen' routines
*
* See also:
* ECMA-262 v5, 15.2.3.11
* ECMA-262 v5, 15.2.3.12
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_test_integrity_level (ecma_object_t *obj_p, /**< routine's argument */
int mode) /**< routine mode */
{
JERRY_ASSERT (mode == ECMA_OBJECT_ROUTINE_IS_FROZEN || mode == ECMA_OBJECT_ROUTINE_IS_SEALED);
/* 3. */
bool is_extensible;
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_OBJECT_IS_PROXY (obj_p))
{
ecma_value_t status = ecma_proxy_object_is_extensible (obj_p);
if (ECMA_IS_VALUE_ERROR (status))
{
return status;
}
is_extensible = ecma_is_value_true (status);
}
else
{
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
is_extensible = ecma_op_ordinary_object_is_extensible (obj_p);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
if (is_extensible)
{
return ECMA_VALUE_FALSE;
}
/* the value can be updated in the loop below */
ecma_value_t ret_value = ECMA_VALUE_TRUE;
/* 2. */
ecma_collection_t *props_p = ecma_op_object_get_property_names (obj_p, ECMA_LIST_NO_OPTS);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (props_p == NULL)
{
return ECMA_VALUE_ERROR;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
ecma_value_t *buffer_p = props_p->buffer_p;
for (uint32_t i = 0; i < props_p->item_count; i++)
{
ecma_string_t *property_name_p = ecma_get_string_from_value (buffer_p[i]);
/* 2.a */
ecma_property_descriptor_t prop_desc;
ecma_value_t status = ecma_op_object_get_own_property_descriptor (obj_p, property_name_p, &prop_desc);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_IS_VALUE_ERROR (status))
{
ret_value = status;
break;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
if (ecma_is_value_false (status))
{
continue;
}
bool is_writable_data = ((prop_desc.flags & (ECMA_PROP_IS_VALUE_DEFINED | ECMA_PROP_IS_WRITABLE))
== (ECMA_PROP_IS_VALUE_DEFINED | ECMA_PROP_IS_WRITABLE));
bool is_configurable = (prop_desc.flags & ECMA_PROP_IS_CONFIGURABLE);
ecma_free_property_descriptor (&prop_desc);
/* 2.b for isFrozen */
/* 2.b for isSealed, 2.c for isFrozen */
if ((mode == ECMA_OBJECT_ROUTINE_IS_FROZEN && is_writable_data)
|| is_configurable)
{
ret_value = ECMA_VALUE_FALSE;
break;
}
}
ecma_collection_free (props_p);
return ret_value;
} /* ecma_builtin_object_test_integrity_level */
/**
* The Object object's 'isExtensible' routine
*
* See also:
* ECMA-262 v5, 15.2.3.13
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_object_object_is_extensible (ecma_object_t *obj_p) /**< routine's argument */
{
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_OBJECT_IS_PROXY (obj_p))
{
return ecma_proxy_object_is_extensible (obj_p);
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
return ecma_make_boolean_value (ecma_op_ordinary_object_is_extensible (obj_p));
} /* ecma_builtin_object_object_is_extensible */
/**
* The Object object's 'keys' routine
*
* See also:
* ECMA-262 v5, 15.2.3.14
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_keys (ecma_object_t *obj_p) /**< routine's argument */
{
return ecma_builtin_helper_object_get_properties (obj_p, ECMA_LIST_ENUMERABLE);
} /* ecma_builtin_object_object_keys */
/**
* The Object object's 'getOwnPropertyDescriptor' routine
*
* See also:
* ECMA-262 v5, 15.2.3.3
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_object_object_get_own_property_descriptor (ecma_object_t *obj_p, /**< routine's first argument */
ecma_string_t *name_str_p) /**< routine's second argument */
{
/* 3. */
ecma_property_descriptor_t prop_desc;
ecma_value_t status = ecma_op_object_get_own_property_descriptor (obj_p, name_str_p, &prop_desc);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_IS_VALUE_ERROR (status))
{
return status;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
if (ecma_is_value_true (status))
{
/* 4. */
ecma_object_t *desc_obj_p = ecma_op_from_property_descriptor (&prop_desc);
ecma_free_property_descriptor (&prop_desc);
return ecma_make_object_value (desc_obj_p);
}
return ECMA_VALUE_UNDEFINED;
} /* ecma_builtin_object_object_get_own_property_descriptor */
/**
* The Object object's 'defineProperties' routine
*
* See also:
* ECMA-262 v5, 15.2.3.7
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_define_properties (ecma_object_t *obj_p, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
/* 2. */
ecma_value_t props = ecma_op_to_object (arg2);
if (ECMA_IS_VALUE_ERROR (props))
{
return props;
}
ecma_object_t *props_p = ecma_get_object_from_value (props);
/* 3. */
ecma_collection_t *prop_names_p = ecma_op_object_get_property_names (props_p, ECMA_LIST_CONVERT_FAST_ARRAYS
| ECMA_LIST_ENUMERABLE);
ecma_value_t ret_value = ECMA_VALUE_ERROR;
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (prop_names_p == NULL)
{
ecma_deref_object (props_p);
return ret_value;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
ecma_value_t *buffer_p = prop_names_p->buffer_p;
/* 4. */
JMEM_DEFINE_LOCAL_ARRAY (property_descriptors, prop_names_p->item_count, ecma_property_descriptor_t);
uint32_t property_descriptor_number = 0;
for (uint32_t i = 0; i < prop_names_p->item_count; i++)
{
/* 5.a */
ecma_value_t desc_obj = ecma_op_object_get (props_p, ecma_get_string_from_value (buffer_p[i]));
if (ECMA_IS_VALUE_ERROR (desc_obj))
{
goto cleanup;
}
/* 5.b */
ecma_value_t conv_result = ecma_op_to_property_descriptor (desc_obj,
&property_descriptors[property_descriptor_number]);
property_descriptors[property_descriptor_number].flags |= ECMA_PROP_IS_THROW;
ecma_free_value (desc_obj);
if (ECMA_IS_VALUE_ERROR (conv_result))
{
goto cleanup;
}
property_descriptor_number++;
ecma_free_value (conv_result);
}
/* 6. */
buffer_p = prop_names_p->buffer_p;
for (uint32_t i = 0; i < prop_names_p->item_count; i++)
{
ecma_value_t define_own_prop_ret = ecma_op_object_define_own_property (obj_p,
ecma_get_string_from_value (buffer_p[i]),
&property_descriptors[i]);
if (ECMA_IS_VALUE_ERROR (define_own_prop_ret))
{
goto cleanup;
}
ecma_free_value (define_own_prop_ret);
}
ecma_ref_object (obj_p);
ret_value = ecma_make_object_value (obj_p);
cleanup:
/* Clean up. */
for (uint32_t index = 0;
index < property_descriptor_number;
index++)
{
ecma_free_property_descriptor (&property_descriptors[index]);
}
JMEM_FINALIZE_LOCAL_ARRAY (property_descriptors);
ecma_collection_free (prop_names_p);
ecma_deref_object (props_p);
return ret_value;
} /* ecma_builtin_object_object_define_properties */
/**
* The Object object's 'create' routine
*
* See also:
* ECMA-262 v5, 15.2.3.5
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_create (ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
/* 1. */
if (!ecma_is_value_object (arg1) && !ecma_is_value_null (arg1))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Argument is not an object."));
}
ecma_object_t *obj_p = NULL;
if (!ecma_is_value_null (arg1))
{
obj_p = ecma_get_object_from_value (arg1);
}
/* 2-3. */
ecma_object_t *result_obj_p = ecma_op_create_object_object_noarg_and_set_prototype (obj_p);
/* 4. */
if (!ecma_is_value_undefined (arg2))
{
ecma_value_t obj = ecma_builtin_object_object_define_properties (result_obj_p, arg2);
if (ECMA_IS_VALUE_ERROR (obj))
{
ecma_deref_object (result_obj_p);
return obj;
}
ecma_free_value (obj);
}
/* 5. */
return ecma_make_object_value (result_obj_p);
} /* ecma_builtin_object_object_create */
/**
* The Object object's 'defineProperty' routine
*
* See also:
* ECMA-262 v5, 15.2.3.6
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_object_object_define_property (ecma_object_t *obj_p, /**< routine's first argument */
ecma_string_t *name_str_p, /**< routine's second argument */
ecma_value_t arg3) /**< routine's third argument */
{
ecma_property_descriptor_t prop_desc;
ecma_value_t conv_result = ecma_op_to_property_descriptor (arg3, &prop_desc);
if (ECMA_IS_VALUE_ERROR (conv_result))
{
return conv_result;
}
prop_desc.flags |= ECMA_PROP_IS_THROW;
ecma_value_t define_own_prop_ret = ecma_op_object_define_own_property (obj_p,
name_str_p,
&prop_desc);
ecma_free_property_descriptor (&prop_desc);
ecma_free_value (conv_result);
if (ECMA_IS_VALUE_ERROR (define_own_prop_ret))
{
return define_own_prop_ret;
}
ecma_ref_object (obj_p);
ecma_free_value (define_own_prop_ret);
return ecma_make_object_value (obj_p);
} /* ecma_builtin_object_object_define_property */
#if ENABLED (JERRY_ES2015)
/**
* The Object object's 'assign' routine
*
* See also:
* ECMA-262 v6, 19.1.2.1
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_assign (ecma_object_t *target_p, /**< target object */
const ecma_value_t arguments_list_p[], /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
/* 4-5. */
for (uint32_t i = 0; i < arguments_list_len && ecma_is_value_empty (ret_value); i++)
{
ecma_value_t next_source = arguments_list_p[i];
/* 5.a */
if (ecma_is_value_undefined (next_source) || ecma_is_value_null (next_source))
{
continue;
}
/* 5.b.i */
ecma_value_t from_value = ecma_op_to_object (next_source);
/* null and undefied cases are handled above, so this must be a valid object */
JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (from_value));
ecma_object_t *from_obj_p = ecma_get_object_from_value (from_value);
/* 5.b.iii */
ecma_collection_t *props_p = ecma_op_object_get_property_names (from_obj_p, ECMA_LIST_CONVERT_FAST_ARRAYS
| ECMA_LIST_ENUMERABLE
| ECMA_LIST_SYMBOLS);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (props_p == NULL)
{
ecma_deref_object (from_obj_p);
return ECMA_VALUE_ERROR;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
ecma_value_t *buffer_p = props_p->buffer_p;
for (uint32_t j = 0; (j < props_p->item_count) && ecma_is_value_empty (ret_value); j++)
{
ecma_string_t *property_name_p = ecma_get_prop_name_from_value (buffer_p[j]);
/* 5.c.i-ii */
ecma_property_descriptor_t prop_desc;
ecma_value_t desc_status = ecma_op_object_get_own_property_descriptor (from_obj_p, property_name_p, &prop_desc);
#if ENABLED (JERRY_ES2015_BUILTIN_PROXY)
if (ECMA_IS_VALUE_ERROR (desc_status))
{
ret_value = desc_status;
break;
}
#endif /* ENABLED (JERRY_ES2015_BUILTIN_PROXY) */
if (ecma_is_value_false (desc_status))
{
continue;
}
/* 5.c.iii */
if ((prop_desc.flags & ECMA_PROP_IS_ENUMERABLE)
&& (((prop_desc.flags & ECMA_PROP_IS_VALUE_DEFINED) && !ecma_is_value_undefined (prop_desc.value))
|| (prop_desc.flags & ECMA_PROP_IS_GET_DEFINED)))
{
/* 5.c.iii.1 */
ecma_value_t prop_value = ecma_op_object_get (from_obj_p, property_name_p);
/* 5.c.iii.2 */
if (ECMA_IS_VALUE_ERROR (prop_value))
{
ret_value = prop_value;
}
else
{
/* 5.c.iii.3 */
ecma_value_t status = ecma_op_object_put (target_p, property_name_p, prop_value, true);
/* 5.c.iii.4 */
if (ECMA_IS_VALUE_ERROR (status))
{
ret_value = status;
}
}
ecma_free_value (prop_value);
ecma_free_property_descriptor (&prop_desc);
}
}
ecma_deref_object (from_obj_p);
ecma_collection_free (props_p);
}
/* 6. */
if (ecma_is_value_empty (ret_value))
{
ecma_ref_object (target_p);
return ecma_make_object_value (target_p);
}
return ret_value;
} /* ecma_builtin_object_object_assign */
/**
* The Object object's 'is' routine
*
* See also:
* ECMA-262 v6, 19.1.2.10
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_object_is (ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
return ecma_op_same_value (arg1, arg2) ? ECMA_VALUE_TRUE : ECMA_VALUE_FALSE;
} /* ecma_builtin_object_object_is */
#endif /* ENABLED (JERRY_ES2015) */
/**
* Dispatcher of the built-in's routines
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_object_dispatch_routine (uint16_t builtin_routine_id, /**< built-in wide routine
* identifier */
ecma_value_t this_arg, /**< 'this' argument value */
const ecma_value_t arguments_list_p[], /**< list of arguments
* passed to routine */
ecma_length_t arguments_number) /**< length of arguments' list */
{
JERRY_UNUSED (this_arg);
JERRY_UNUSED (arguments_list_p);
JERRY_UNUSED (arguments_number);
ecma_value_t arg1 = arguments_list_p[0];
ecma_value_t arg2 = arguments_list_p[1];
/* No specialization for the arguments */
switch (builtin_routine_id)
{
case ECMA_OBJECT_ROUTINE_CREATE:
{
return ecma_builtin_object_object_create (arg1, arg2);
}
#if ENABLED (JERRY_ES2015)
case ECMA_OBJECT_ROUTINE_SET_PROTOTYPE_OF:
{
return ecma_builtin_object_object_set_prototype_of (arg1, arg2);
}
case ECMA_OBJECT_ROUTINE_IS:
{
return ecma_builtin_object_object_is (arg1, arg2);
}
#endif /* ENABLED (JERRY_ES2015) */
default:
{
break;
}
}
ecma_object_t *obj_p;
#if !ENABLED (JERRY_ES2015)
if (!ecma_is_value_object (arg1))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Argument is not an object."));
}
#endif /* !ENABLED (JERRY_ES2015) */
if (builtin_routine_id <= ECMA_OBJECT_ROUTINE_DEFINE_PROPERTIES)
{
#if ENABLED (JERRY_ES2015)
if (!ecma_is_value_object (arg1))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Argument is not an object."));
}
#endif /* ENABLED (JERRY_ES2015) */
obj_p = ecma_get_object_from_value (arg1);
if (builtin_routine_id == ECMA_OBJECT_ROUTINE_DEFINE_PROPERTY)
{
ecma_string_t *prop_name_p = ecma_op_to_prop_name (arg2);
if (prop_name_p == NULL)
{
return ECMA_VALUE_ERROR;
}
ecma_value_t result = ecma_builtin_object_object_define_property (obj_p, prop_name_p, arguments_list_p[2]);
ecma_deref_ecma_string (prop_name_p);
return result;
}
JERRY_ASSERT (builtin_routine_id == ECMA_OBJECT_ROUTINE_DEFINE_PROPERTIES);
return ecma_builtin_object_object_define_properties (obj_p, arg2);
}
else if (builtin_routine_id <= ECMA_OBJECT_ROUTINE_KEYS)
{
#if ENABLED (JERRY_ES2015)
ecma_value_t object = ecma_op_to_object (arg1);
if (ECMA_IS_VALUE_ERROR (object))
{
return object;
}
obj_p = ecma_get_object_from_value (object);
#else /* !ENABLED (JERRY_ES2015) */
obj_p = ecma_get_object_from_value (arg1);
#endif /* ENABLED (JERRY_ES2015) */
ecma_value_t result;
switch (builtin_routine_id)
{
case ECMA_OBJECT_ROUTINE_GET_PROTOTYPE_OF:
{
result = ecma_builtin_object_object_get_prototype_of (obj_p);
break;
}
case ECMA_OBJECT_ROUTINE_GET_OWN_PROPERTY_NAMES:
{
result = ecma_builtin_object_object_get_own_property_names (obj_p);
break;
}
#if ENABLED (JERRY_ES2015)
case ECMA_OBJECT_ROUTINE_ASSIGN:
{
result = ecma_builtin_object_object_assign (obj_p, arguments_list_p + 1, arguments_number - 1);
break;
}
case ECMA_OBJECT_ROUTINE_GET_OWN_PROPERTY_SYMBOLS:
{
result = ecma_builtin_object_object_get_own_property_symbols (obj_p);
break;
}
#endif /* ENABLED (JERRY_ES2015) */
case ECMA_OBJECT_ROUTINE_KEYS:
{
result = ecma_builtin_object_object_keys (obj_p);
break;
}
case ECMA_OBJECT_ROUTINE_GET_OWN_PROPERTY_DESCRIPTOR:
{
ecma_string_t *prop_name_p = ecma_op_to_prop_name (arg2);
if (prop_name_p == NULL)
{
result = ECMA_VALUE_ERROR;
break;
}
result = ecma_builtin_object_object_get_own_property_descriptor (obj_p, prop_name_p);
ecma_deref_ecma_string (prop_name_p);
break;
}
default:
{
JERRY_UNREACHABLE ();
}
}
#if ENABLED (JERRY_ES2015)
ecma_deref_object (obj_p);
#endif /* ENABLED (JERRY_ES2015) */
return result;
}
else if (builtin_routine_id <= ECMA_OBJECT_ROUTINE_SEAL)
{
#if ENABLED (JERRY_ES2015)
if (!ecma_is_value_object (arg1))
{
return ecma_copy_value (arg1);
}
#endif /* ENABLED (JERRY_ES2015) */
obj_p = ecma_get_object_from_value (arg1);
switch (builtin_routine_id)
{
case ECMA_OBJECT_ROUTINE_SEAL:
{
return ecma_builtin_object_object_seal (obj_p);
}
case ECMA_OBJECT_ROUTINE_FREEZE:
{
return ecma_builtin_object_object_freeze (obj_p);
}
case ECMA_OBJECT_ROUTINE_PREVENT_EXTENSIONS:
{
return ecma_builtin_object_object_prevent_extensions (obj_p);
}
default:
{
JERRY_UNREACHABLE ();
}
}
}
else
{
JERRY_ASSERT (builtin_routine_id <= ECMA_OBJECT_ROUTINE_IS_SEALED);
#if ENABLED (JERRY_ES2015)
if (!ecma_is_value_object (arg1))
{
return ecma_make_boolean_value (builtin_routine_id != ECMA_OBJECT_ROUTINE_IS_EXTENSIBLE);
}
#endif /* ENABLED (JERRY_ES2015) */
obj_p = ecma_get_object_from_value (arg1);
switch (builtin_routine_id)
{
case ECMA_OBJECT_ROUTINE_IS_SEALED:
case ECMA_OBJECT_ROUTINE_IS_FROZEN:
{
return ecma_builtin_object_test_integrity_level (obj_p, builtin_routine_id);
}
case ECMA_OBJECT_ROUTINE_IS_EXTENSIBLE:
{
return ecma_builtin_object_object_is_extensible (obj_p);
}
default:
{
JERRY_UNREACHABLE ();
}
}
}
} /* ecma_builtin_object_dispatch_routine */
/**
* @}
* @}
* @}
*/
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