mirror of
https://github.com/jerryscript-project/jerryscript.git
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Missing features: - caching next() method (this also true for normal generators) - automatic sync to async generator conversion JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
1389 lines
44 KiB
C
1389 lines
44 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ecma-alloc.h"
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#include "ecma-array-object.h"
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#include "ecma-builtins.h"
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#include "ecma-builtin-helpers.h"
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#include "ecma-conversion.h"
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#include "ecma-exceptions.h"
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#include "ecma-function-object.h"
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#include "ecma-gc.h"
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#include "ecma-globals.h"
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#include "ecma-helpers.h"
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#include "ecma-iterator-object.h"
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#include "ecma-lex-env.h"
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#include "ecma-objects.h"
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#include "ecma-promise-object.h"
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#include "ecma-proxy-object.h"
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#include "ecma-try-catch-macro.h"
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#include "jcontext.h"
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#include "opcodes.h"
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#include "vm-defines.h"
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#include "vm-stack.h"
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/** \addtogroup vm Virtual machine
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* @{
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*
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* \addtogroup vm_opcodes Opcodes
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* @{
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*/
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/**
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* 'Variable declaration' opcode handler.
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*
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* See also: ECMA-262 v5, 10.5 - Declaration binding instantiation (block 8).
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*
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* @return ECMA_VALUE_ERROR - if no the operation fails
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* ECMA_VALUE_EMPTY - otherwise
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*/
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inline ecma_value_t JERRY_ATTR_ALWAYS_INLINE
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vm_var_decl (ecma_object_t *lex_env_p, /**< target lexical environment */
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ecma_string_t *var_name_str_p, /**< variable name */
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bool is_configurable_bindings) /**< true if the binding can be deleted */
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{
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ecma_value_t has_binding = ecma_op_has_binding (lex_env_p, var_name_str_p);
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#if ENABLED (JERRY_BUILTIN_PROXY)
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if (ECMA_IS_VALUE_ERROR (has_binding))
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{
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return has_binding;
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}
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#endif /* ENABLED (JERRY_BUILTIN_PROXY) */
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if (ecma_is_value_false (has_binding))
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{
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ecma_value_t completion_value = ecma_op_create_mutable_binding (lex_env_p,
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var_name_str_p,
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is_configurable_bindings);
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JERRY_ASSERT (ecma_is_value_empty (completion_value));
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/* Skipping SetMutableBinding as we have already checked that there were not
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* any binding with specified name in current lexical environment
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* and CreateMutableBinding sets the created binding's value to undefined */
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JERRY_ASSERT (ecma_is_value_undefined (ecma_op_get_binding_value (lex_env_p,
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var_name_str_p,
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vm_is_strict_mode ())));
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}
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return ECMA_VALUE_EMPTY;
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} /* vm_var_decl */
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/**
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* Set var binding to a function literal value.
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*
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* @return ECMA_VALUE_ERROR - if no the operation fails
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* ECMA_VALUE_EMPTY - otherwise
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*/
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inline ecma_value_t JERRY_ATTR_ALWAYS_INLINE
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vm_set_var (ecma_object_t *lex_env_p, /**< target lexical environment */
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ecma_string_t *var_name_str_p, /**< variable name */
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bool is_strict, /**< true, if the engine is in strict mode */
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ecma_value_t lit_value) /**< function value */
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{
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ecma_value_t put_value_result;
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put_value_result = ecma_op_put_value_lex_env_base (lex_env_p, var_name_str_p, is_strict, lit_value);
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JERRY_ASSERT (ecma_is_value_boolean (put_value_result)
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|| ecma_is_value_empty (put_value_result)
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|| ECMA_IS_VALUE_ERROR (put_value_result));
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ecma_free_value (lit_value);
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return put_value_result;
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} /* vm_set_var */
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/**
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* 'typeof' opcode handler.
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*
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* See also: ECMA-262 v5, 11.4.3
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*
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* @return ecma value
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* Returned value must be freed with ecma_free_value
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*/
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ecma_value_t
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opfunc_typeof (ecma_value_t left_value) /**< left value */
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{
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return ecma_make_magic_string_value (ecma_get_typeof_lit_id (left_value));
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} /* opfunc_typeof */
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/**
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* Update getter or setter for object literals.
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*/
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void
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opfunc_set_accessor (bool is_getter, /**< is getter accessor */
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ecma_value_t object, /**< object value */
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ecma_string_t *accessor_name_p, /**< accessor name */
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ecma_value_t accessor) /**< accessor value */
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{
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ecma_object_t *object_p = ecma_get_object_from_value (object);
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JERRY_ASSERT (!ecma_op_object_is_fast_array (object_p));
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ecma_property_t *property_p = ecma_find_named_property (object_p, accessor_name_p);
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if (property_p != NULL
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&& ECMA_PROPERTY_GET_TYPE (*property_p) != ECMA_PROPERTY_TYPE_NAMEDACCESSOR)
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{
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ecma_delete_property (object_p, ECMA_PROPERTY_VALUE_PTR (property_p));
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property_p = NULL;
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}
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if (property_p == NULL)
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{
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ecma_object_t *getter_func_p = NULL;
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ecma_object_t *setter_func_p = NULL;
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if (is_getter)
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{
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getter_func_p = ecma_get_object_from_value (accessor);
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}
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else
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{
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setter_func_p = ecma_get_object_from_value (accessor);
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}
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ecma_create_named_accessor_property (object_p,
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accessor_name_p,
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getter_func_p,
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setter_func_p,
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ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE,
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NULL);
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}
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else if (is_getter)
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{
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ecma_object_t *getter_func_p = ecma_get_object_from_value (accessor);
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ecma_set_named_accessor_property_getter (object_p,
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ECMA_PROPERTY_VALUE_PTR (property_p),
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getter_func_p);
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}
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else
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{
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ecma_object_t *setter_func_p = ecma_get_object_from_value (accessor);
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ecma_set_named_accessor_property_setter (object_p,
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ECMA_PROPERTY_VALUE_PTR (property_p),
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setter_func_p);
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}
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} /* opfunc_set_accessor */
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/**
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* Deletes an object property.
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*
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* @return ecma value
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* Returned value must be freed with ecma_free_value
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*/
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ecma_value_t
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vm_op_delete_prop (ecma_value_t object, /**< base object */
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ecma_value_t property, /**< property name */
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bool is_strict) /**< strict mode */
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{
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#if !ENABLED (JERRY_ESNEXT)
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if (ecma_is_value_undefined (object))
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{
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return ECMA_VALUE_TRUE;
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}
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#endif /* !ENABLED (JERRY_ESNEXT) */
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ecma_value_t check_coercible = ecma_op_check_object_coercible (object);
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if (ECMA_IS_VALUE_ERROR (check_coercible))
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{
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return check_coercible;
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}
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JERRY_ASSERT (check_coercible == ECMA_VALUE_EMPTY);
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ecma_string_t *name_string_p = ecma_op_to_prop_name (property);
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if (JERRY_UNLIKELY (name_string_p == NULL))
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{
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return ECMA_VALUE_ERROR;
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}
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ecma_value_t obj_value = ecma_op_to_object (object);
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/* The ecma_op_check_object_coercible call already checked the op_to_object error cases. */
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JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (obj_value));
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JERRY_ASSERT (ecma_is_value_object (obj_value));
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ecma_object_t *obj_p = ecma_get_object_from_value (obj_value);
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JERRY_ASSERT (!ecma_is_lexical_environment (obj_p));
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ecma_value_t delete_op_ret = ecma_op_object_delete (obj_p, name_string_p, is_strict);
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JERRY_ASSERT (ecma_is_value_boolean (delete_op_ret) || ECMA_IS_VALUE_ERROR (delete_op_ret));
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ecma_deref_object (obj_p);
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ecma_deref_ecma_string (name_string_p);
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return delete_op_ret;
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} /* vm_op_delete_prop */
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/**
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* Deletes a variable.
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*
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* @return ecma value
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* Returned value must be freed with ecma_free_value
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*/
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ecma_value_t
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vm_op_delete_var (ecma_value_t name_literal, /**< name literal */
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ecma_object_t *lex_env_p) /**< lexical environment */
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{
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ecma_value_t completion_value = ECMA_VALUE_EMPTY;
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ecma_string_t *var_name_str_p = ecma_get_string_from_value (name_literal);
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ecma_object_t *ref_base_lex_env_p = ecma_op_resolve_reference_base (lex_env_p, var_name_str_p);
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#if ENABLED (JERRY_BUILTIN_PROXY)
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if (JERRY_UNLIKELY (ref_base_lex_env_p == ECMA_OBJECT_POINTER_ERROR))
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{
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return ECMA_VALUE_ERROR;
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}
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#endif /* ENABLED (JERRY_BUILTIN_PROXY) */
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if (ref_base_lex_env_p == NULL)
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{
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completion_value = ECMA_VALUE_TRUE;
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}
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else
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{
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JERRY_ASSERT (ecma_is_lexical_environment (ref_base_lex_env_p));
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completion_value = ecma_op_delete_binding (ref_base_lex_env_p, var_name_str_p);
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}
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return completion_value;
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} /* vm_op_delete_var */
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/**
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* 'for-in' opcode handler
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*
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* See also:
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* ECMA-262 v5, 12.6.4
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*
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* @return chain list of property names
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*/
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ecma_collection_t *
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opfunc_for_in (ecma_value_t left_value, /**< left value */
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ecma_value_t *result_obj_p) /**< expression object */
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{
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/* 3. */
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if (ecma_is_value_undefined (left_value)
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|| ecma_is_value_null (left_value))
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{
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return NULL;
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}
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/* 4. */
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ecma_value_t obj_expr_value = ecma_op_to_object (left_value);
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/* ecma_op_to_object will only raise error on null/undefined values but those are handled above. */
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JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (obj_expr_value));
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ecma_object_t *obj_p = ecma_get_object_from_value (obj_expr_value);
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#if ENABLED (JERRY_BUILTIN_PROXY)
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JERRY_ASSERT (!ECMA_OBJECT_IS_PROXY (obj_p));
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#endif /* ENABLED (JERRY_BUILTIN_PROXY) */
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ecma_collection_t *prop_names_p = ecma_op_object_get_property_names (obj_p, ECMA_LIST_ENUMERABLE_PROTOTYPE);
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if (prop_names_p->item_count != 0)
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{
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*result_obj_p = ecma_make_object_value (obj_p);
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return prop_names_p;
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}
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ecma_deref_object (obj_p);
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ecma_collection_destroy (prop_names_p);
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return NULL;
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} /* opfunc_for_in */
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#if ENABLED (JERRY_ESNEXT)
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/**
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* 'VM_OC_APPEND_ARRAY' opcode handler specialized for spread objects
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*
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* @return ECMA_VALUE_ERROR - if the operation failed
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* ECMA_VALUE_EMPTY, otherwise
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*/
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static ecma_value_t JERRY_ATTR_NOINLINE
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opfunc_append_to_spread_array (ecma_value_t *stack_top_p, /**< current stack top */
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uint16_t values_length) /**< number of elements to set */
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{
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JERRY_ASSERT (!(values_length & OPFUNC_HAS_SPREAD_ELEMENT));
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ecma_object_t *array_obj_p = ecma_get_object_from_value (stack_top_p[-1]);
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JERRY_ASSERT (ecma_get_object_type (array_obj_p) == ECMA_OBJECT_TYPE_ARRAY);
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ecma_extended_object_t *ext_array_obj_p = (ecma_extended_object_t *) array_obj_p;
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uint32_t old_length = ext_array_obj_p->u.array.length;
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for (uint32_t i = 0, idx = old_length; i < values_length; i++, idx++)
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{
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if (ecma_is_value_array_hole (stack_top_p[i]))
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{
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continue;
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}
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if (stack_top_p[i] == ECMA_VALUE_SPREAD_ELEMENT)
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{
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i++;
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ecma_value_t ret_value = ECMA_VALUE_ERROR;
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||
ecma_value_t spread_value = stack_top_p[i];
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ecma_value_t iterator = ecma_op_get_iterator (spread_value, ECMA_VALUE_SYNC_ITERATOR);
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if (!ECMA_IS_VALUE_ERROR (iterator))
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{
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while (true)
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{
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ecma_value_t next_value = ecma_op_iterator_step (iterator);
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if (ECMA_IS_VALUE_ERROR (next_value))
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{
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break;
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}
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if (ecma_is_value_false (next_value))
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{
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idx--;
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ret_value = ECMA_VALUE_EMPTY;
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break;
|
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}
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ecma_value_t value = ecma_op_iterator_value (next_value);
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ecma_free_value (next_value);
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||
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if (ECMA_IS_VALUE_ERROR (value))
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{
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break;
|
||
}
|
||
|
||
ecma_value_t put_comp;
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put_comp = ecma_builtin_helper_def_prop_by_index (array_obj_p,
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idx++,
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value,
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ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE);
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||
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JERRY_ASSERT (ecma_is_value_true (put_comp));
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ecma_free_value (value);
|
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}
|
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}
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ecma_free_value (iterator);
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ecma_free_value (spread_value);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (ret_value))
|
||
{
|
||
for (uint32_t k = i + 1; k < values_length; k++)
|
||
{
|
||
ecma_free_value (stack_top_p[k]);
|
||
}
|
||
|
||
return ret_value;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
ecma_value_t put_comp = ecma_builtin_helper_def_prop_by_index (array_obj_p,
|
||
idx,
|
||
stack_top_p[i],
|
||
ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE);
|
||
JERRY_ASSERT (ecma_is_value_true (put_comp));
|
||
ecma_free_value (stack_top_p[i]);
|
||
}
|
||
}
|
||
|
||
return ECMA_VALUE_EMPTY;
|
||
} /* opfunc_append_to_spread_array */
|
||
|
||
/**
|
||
* Spread function call/construct arguments into an ecma-collection
|
||
*
|
||
* @return NULL - if the operation failed
|
||
* pointer to the ecma-collection with the spreaded arguments, otherwise
|
||
*/
|
||
JERRY_ATTR_NOINLINE ecma_collection_t *
|
||
opfunc_spread_arguments (ecma_value_t *stack_top_p, /**< pointer to the current stack top */
|
||
uint8_t arguments_list_len) /**< number of arguments */
|
||
{
|
||
ecma_collection_t *buff_p = ecma_new_collection ();
|
||
|
||
for (uint32_t i = 0; i < arguments_list_len; i++)
|
||
{
|
||
ecma_value_t arg = *stack_top_p++;
|
||
|
||
if (arg != ECMA_VALUE_SPREAD_ELEMENT)
|
||
{
|
||
ecma_collection_push_back (buff_p, arg);
|
||
continue;
|
||
}
|
||
|
||
ecma_value_t ret_value = ECMA_VALUE_ERROR;
|
||
ecma_value_t spread_value = *stack_top_p++;
|
||
i++;
|
||
|
||
ecma_value_t iterator = ecma_op_get_iterator (spread_value, ECMA_VALUE_SYNC_ITERATOR);
|
||
|
||
if (!ECMA_IS_VALUE_ERROR (iterator))
|
||
{
|
||
while (true)
|
||
{
|
||
ecma_value_t next_value = ecma_op_iterator_step (iterator);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (next_value))
|
||
{
|
||
break;
|
||
}
|
||
|
||
if (ecma_is_value_false (next_value))
|
||
{
|
||
ret_value = ECMA_VALUE_EMPTY;
|
||
break;
|
||
}
|
||
|
||
ecma_value_t value = ecma_op_iterator_value (next_value);
|
||
|
||
ecma_free_value (next_value);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (value))
|
||
{
|
||
break;
|
||
}
|
||
|
||
ecma_collection_push_back (buff_p, value);
|
||
}
|
||
}
|
||
|
||
ecma_free_value (iterator);
|
||
ecma_free_value (spread_value);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (ret_value))
|
||
{
|
||
for (uint32_t k = i + 1; k < arguments_list_len; k++)
|
||
{
|
||
ecma_free_value (*stack_top_p++);
|
||
}
|
||
|
||
ecma_collection_free (buff_p);
|
||
buff_p = NULL;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return buff_p;
|
||
} /* opfunc_spread_arguments */
|
||
|
||
#endif /* ENABLED (JERRY_ESNEXT) */
|
||
|
||
/**
|
||
* 'VM_OC_APPEND_ARRAY' opcode handler, for setting array object properties
|
||
*
|
||
* @return ECMA_VALUE_ERROR - if the operation failed
|
||
* ECMA_VALUE_EMPTY, otherwise
|
||
*/
|
||
ecma_value_t JERRY_ATTR_NOINLINE
|
||
opfunc_append_array (ecma_value_t *stack_top_p, /**< current stack top */
|
||
uint16_t values_length) /**< number of elements to set
|
||
* with potential OPFUNC_HAS_SPREAD_ELEMENT flag */
|
||
{
|
||
#if ENABLED (JERRY_ESNEXT)
|
||
if (values_length >= OPFUNC_HAS_SPREAD_ELEMENT)
|
||
{
|
||
return opfunc_append_to_spread_array (stack_top_p, (uint16_t) (values_length & ~OPFUNC_HAS_SPREAD_ELEMENT));
|
||
}
|
||
#endif /* ENABLED (JERRY_ESNEXT) */
|
||
|
||
ecma_object_t *array_obj_p = ecma_get_object_from_value (stack_top_p[-1]);
|
||
JERRY_ASSERT (ecma_get_object_type (array_obj_p) == ECMA_OBJECT_TYPE_ARRAY);
|
||
|
||
ecma_extended_object_t *ext_array_obj_p = (ecma_extended_object_t *) array_obj_p;
|
||
uint32_t old_length = ext_array_obj_p->u.array.length;
|
||
|
||
if (JERRY_LIKELY (ecma_op_array_is_fast_array (ext_array_obj_p)))
|
||
{
|
||
uint32_t filled_holes = 0;
|
||
ecma_value_t *values_p = ecma_fast_array_extend (array_obj_p, old_length + values_length);
|
||
|
||
for (uint32_t i = 0; i < values_length; i++)
|
||
{
|
||
values_p[old_length + i] = stack_top_p[i];
|
||
|
||
if (!ecma_is_value_array_hole (stack_top_p[i]))
|
||
{
|
||
filled_holes++;
|
||
|
||
if (ecma_is_value_object (stack_top_p[i]))
|
||
{
|
||
ecma_deref_object (ecma_get_object_from_value (stack_top_p[i]));
|
||
}
|
||
}
|
||
}
|
||
|
||
ext_array_obj_p->u.array.u.hole_count -= filled_holes * ECMA_FAST_ARRAY_HOLE_ONE;
|
||
|
||
if (JERRY_UNLIKELY ((values_length - filled_holes) > ECMA_FAST_ARRAY_MAX_NEW_HOLES_COUNT))
|
||
{
|
||
ecma_fast_array_convert_to_normal (array_obj_p);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (uint32_t i = 0; i < values_length; i++)
|
||
{
|
||
if (!ecma_is_value_array_hole (stack_top_p[i]))
|
||
{
|
||
ecma_string_t *index_str_p = ecma_new_ecma_string_from_uint32 (old_length + i);
|
||
|
||
ecma_property_value_t *prop_value_p;
|
||
|
||
prop_value_p = ecma_create_named_data_property (array_obj_p,
|
||
index_str_p,
|
||
ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE,
|
||
NULL);
|
||
|
||
ecma_deref_ecma_string (index_str_p);
|
||
prop_value_p->value = stack_top_p[i];
|
||
|
||
if (ecma_is_value_object (stack_top_p[i]))
|
||
{
|
||
ecma_free_value (stack_top_p[i]);
|
||
}
|
||
|
||
}
|
||
|
||
ext_array_obj_p->u.array.length = old_length + values_length;
|
||
}
|
||
}
|
||
|
||
return ECMA_VALUE_EMPTY;
|
||
} /* opfunc_append_array */
|
||
|
||
#if ENABLED (JERRY_ESNEXT)
|
||
|
||
/**
|
||
* Create an executable object using the current frame context
|
||
*
|
||
* @return executable object
|
||
*/
|
||
vm_executable_object_t *
|
||
opfunc_create_executable_object (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
|
||
vm_create_executable_object_type_t type) /**< executable object type */
|
||
{
|
||
const ecma_compiled_code_t *bytecode_header_p = frame_ctx_p->bytecode_header_p;
|
||
size_t size, register_end;
|
||
|
||
ecma_bytecode_ref ((ecma_compiled_code_t *) bytecode_header_p);
|
||
|
||
if (bytecode_header_p->status_flags & CBC_CODE_FLAGS_UINT16_ARGUMENTS)
|
||
{
|
||
cbc_uint16_arguments_t *args_p = (cbc_uint16_arguments_t *) bytecode_header_p;
|
||
register_end = (size_t) args_p->register_end;
|
||
size = (register_end + (size_t) args_p->stack_limit) * sizeof (ecma_value_t);
|
||
}
|
||
else
|
||
{
|
||
cbc_uint8_arguments_t *args_p = (cbc_uint8_arguments_t *) bytecode_header_p;
|
||
register_end = (size_t) args_p->register_end;
|
||
size = (register_end + (size_t) args_p->stack_limit) * sizeof (ecma_value_t);
|
||
}
|
||
|
||
size_t total_size = JERRY_ALIGNUP (sizeof (vm_executable_object_t) + size, sizeof (uintptr_t));
|
||
|
||
ecma_object_t *proto_p = NULL;
|
||
/* Async function objects are not accessible, so their class_id is not relevant. */
|
||
uint16_t class_id = LIT_MAGIC_STRING_GENERATOR_UL;
|
||
|
||
if (type == VM_CREATE_EXECUTABLE_OBJECT_GENERATOR)
|
||
{
|
||
ecma_builtin_id_t default_proto_id = ECMA_BUILTIN_ID_GENERATOR_PROTOTYPE;
|
||
|
||
if (CBC_FUNCTION_GET_TYPE (frame_ctx_p->bytecode_header_p->status_flags) == CBC_FUNCTION_ASYNC_GENERATOR)
|
||
{
|
||
default_proto_id = ECMA_BUILTIN_ID_ASYNC_GENERATOR_PROTOTYPE;
|
||
class_id = LIT_MAGIC_STRING_ASYNC_GENERATOR_UL;
|
||
}
|
||
|
||
proto_p = ecma_op_get_prototype_from_constructor (JERRY_CONTEXT (current_function_obj_p), default_proto_id);
|
||
}
|
||
|
||
ecma_object_t *object_p = ecma_create_object (proto_p,
|
||
total_size,
|
||
ECMA_OBJECT_TYPE_CLASS);
|
||
|
||
vm_executable_object_t *executable_object_p = (vm_executable_object_t *) object_p;
|
||
|
||
if (type == VM_CREATE_EXECUTABLE_OBJECT_GENERATOR)
|
||
{
|
||
ecma_deref_object (proto_p);
|
||
}
|
||
|
||
executable_object_p->extended_object.u.class_prop.class_id = class_id;
|
||
executable_object_p->extended_object.u.class_prop.extra_info = 0;
|
||
ECMA_SET_INTERNAL_VALUE_ANY_POINTER (executable_object_p->extended_object.u.class_prop.u.head, NULL);
|
||
|
||
JERRY_ASSERT (!frame_ctx_p->is_eval_code);
|
||
|
||
vm_frame_ctx_t *new_frame_ctx_p = &(executable_object_p->frame_ctx);
|
||
*new_frame_ctx_p = *frame_ctx_p;
|
||
|
||
/* The old register values are discarded. */
|
||
ecma_value_t *new_registers_p = VM_GET_REGISTERS (new_frame_ctx_p);
|
||
memcpy (new_registers_p, VM_GET_REGISTERS (frame_ctx_p), size);
|
||
|
||
size_t stack_top = (size_t) (frame_ctx_p->stack_top_p - VM_GET_REGISTERS (frame_ctx_p));
|
||
ecma_value_t *new_stack_top_p = new_registers_p + stack_top;
|
||
|
||
new_frame_ctx_p->stack_top_p = new_stack_top_p;
|
||
|
||
/* Initial state is "not running", so all object references are released. */
|
||
|
||
if (frame_ctx_p->context_depth > 0)
|
||
{
|
||
JERRY_ASSERT (type != VM_CREATE_EXECUTABLE_OBJECT_GENERATOR);
|
||
|
||
ecma_value_t *register_end_p = new_registers_p + register_end;
|
||
|
||
JERRY_ASSERT (register_end_p <= new_stack_top_p);
|
||
|
||
while (new_registers_p < register_end_p)
|
||
{
|
||
ecma_deref_if_object (*new_registers_p++);
|
||
}
|
||
|
||
vm_ref_lex_env_chain (frame_ctx_p->lex_env_p,
|
||
frame_ctx_p->context_depth,
|
||
new_registers_p,
|
||
false);
|
||
|
||
new_registers_p += frame_ctx_p->context_depth;
|
||
|
||
JERRY_ASSERT (new_registers_p <= new_stack_top_p);
|
||
}
|
||
|
||
while (new_registers_p < new_stack_top_p)
|
||
{
|
||
ecma_deref_if_object (*new_registers_p++);
|
||
}
|
||
|
||
JERRY_ASSERT (new_frame_ctx_p->block_result == ECMA_VALUE_UNDEFINED);
|
||
|
||
new_frame_ctx_p->this_binding = ecma_copy_value_if_not_object (new_frame_ctx_p->this_binding);
|
||
|
||
JERRY_CONTEXT (vm_top_context_p) = new_frame_ctx_p->prev_context_p;
|
||
|
||
return executable_object_p;
|
||
} /* opfunc_create_executable_object */
|
||
|
||
/**
|
||
* Byte code which resumes an executable object with throw
|
||
*/
|
||
const uint8_t opfunc_resume_executable_object_with_throw[1] =
|
||
{
|
||
CBC_THROW
|
||
};
|
||
|
||
/**
|
||
* Byte code which resumes an executable object with return
|
||
*/
|
||
const uint8_t opfunc_resume_executable_object_with_return[2] =
|
||
{
|
||
CBC_EXT_OPCODE, CBC_EXT_RETURN
|
||
};
|
||
|
||
/**
|
||
* Resume the execution of an inactive executable object
|
||
*
|
||
* @return value provided by the execution
|
||
*/
|
||
ecma_value_t
|
||
opfunc_resume_executable_object (vm_executable_object_t *executable_object_p, /**< executable object */
|
||
ecma_value_t value) /**< value pushed onto the stack (takes the reference) */
|
||
{
|
||
const ecma_compiled_code_t *bytecode_header_p = executable_object_p->frame_ctx.bytecode_header_p;
|
||
ecma_value_t *register_p = VM_GET_REGISTERS (&executable_object_p->frame_ctx);
|
||
ecma_value_t *register_end_p;
|
||
|
||
if (bytecode_header_p->status_flags & CBC_CODE_FLAGS_UINT16_ARGUMENTS)
|
||
{
|
||
cbc_uint16_arguments_t *args_p = (cbc_uint16_arguments_t *) bytecode_header_p;
|
||
register_end_p = register_p + args_p->register_end;
|
||
}
|
||
else
|
||
{
|
||
cbc_uint8_arguments_t *args_p = (cbc_uint8_arguments_t *) bytecode_header_p;
|
||
register_end_p = register_p + args_p->register_end;
|
||
}
|
||
|
||
ecma_value_t *stack_top_p = executable_object_p->frame_ctx.stack_top_p;
|
||
|
||
if (executable_object_p->frame_ctx.context_depth > 0)
|
||
{
|
||
while (register_p < register_end_p)
|
||
{
|
||
ecma_ref_if_object (*register_p++);
|
||
}
|
||
|
||
vm_ref_lex_env_chain (executable_object_p->frame_ctx.lex_env_p,
|
||
executable_object_p->frame_ctx.context_depth,
|
||
register_p,
|
||
true);
|
||
|
||
register_p += executable_object_p->frame_ctx.context_depth;
|
||
}
|
||
|
||
while (register_p < stack_top_p)
|
||
{
|
||
ecma_ref_if_object (*register_p++);
|
||
}
|
||
|
||
ecma_ref_if_object (executable_object_p->frame_ctx.block_result);
|
||
|
||
*register_p++ = value;
|
||
executable_object_p->frame_ctx.stack_top_p = register_p;
|
||
|
||
JERRY_ASSERT (ECMA_EXECUTABLE_OBJECT_IS_SUSPENDED (executable_object_p->extended_object.u.class_prop.extra_info));
|
||
|
||
executable_object_p->extended_object.u.class_prop.extra_info |= ECMA_EXECUTABLE_OBJECT_RUNNING;
|
||
|
||
executable_object_p->frame_ctx.prev_context_p = JERRY_CONTEXT (vm_top_context_p);
|
||
JERRY_CONTEXT (vm_top_context_p) = &executable_object_p->frame_ctx;
|
||
|
||
/* inside the generators the "new.target" is always "undefined" as it can't be invoked with "new" */
|
||
ecma_object_t *old_new_target = JERRY_CONTEXT (current_new_target);
|
||
JERRY_CONTEXT (current_new_target) = NULL;
|
||
|
||
ecma_value_t result = vm_execute (&executable_object_p->frame_ctx);
|
||
|
||
JERRY_CONTEXT (current_new_target) = old_new_target;
|
||
executable_object_p->extended_object.u.class_prop.extra_info &= (uint16_t) ~ECMA_EXECUTABLE_OBJECT_RUNNING;
|
||
|
||
if (executable_object_p->frame_ctx.call_operation != VM_EXEC_RETURN)
|
||
{
|
||
JERRY_ASSERT (executable_object_p->frame_ctx.call_operation == VM_NO_EXEC_OP);
|
||
|
||
/* All resources are released. */
|
||
executable_object_p->extended_object.u.class_prop.extra_info |= ECMA_EXECUTABLE_OBJECT_COMPLETED;
|
||
return result;
|
||
}
|
||
|
||
JERRY_CONTEXT (vm_top_context_p) = executable_object_p->frame_ctx.prev_context_p;
|
||
|
||
register_p = VM_GET_REGISTERS (&executable_object_p->frame_ctx);
|
||
stack_top_p = executable_object_p->frame_ctx.stack_top_p;
|
||
|
||
if (executable_object_p->frame_ctx.context_depth > 0)
|
||
{
|
||
while (register_p < register_end_p)
|
||
{
|
||
ecma_deref_if_object (*register_p++);
|
||
}
|
||
|
||
vm_ref_lex_env_chain (executable_object_p->frame_ctx.lex_env_p,
|
||
executable_object_p->frame_ctx.context_depth,
|
||
register_p,
|
||
false);
|
||
|
||
register_p += executable_object_p->frame_ctx.context_depth;
|
||
}
|
||
|
||
while (register_p < stack_top_p)
|
||
{
|
||
ecma_deref_if_object (*register_p++);
|
||
}
|
||
|
||
ecma_deref_if_object (executable_object_p->frame_ctx.block_result);
|
||
|
||
return result;
|
||
} /* opfunc_resume_executable_object */
|
||
|
||
/**
|
||
* Fulfill the next promise of the async generator with the value
|
||
*/
|
||
void
|
||
opfunc_async_generator_yield (ecma_extended_object_t *async_generator_object_p, /**< async generator object */
|
||
ecma_value_t value) /**< value (takes the reference) */
|
||
{
|
||
ecma_async_generator_task_t *task_p;
|
||
task_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_async_generator_task_t,
|
||
async_generator_object_p->u.class_prop.u.head);
|
||
|
||
ecma_value_t iter_result = ecma_create_iter_result_object (value, ECMA_VALUE_FALSE);
|
||
ecma_fulfill_promise (task_p->promise, iter_result);
|
||
|
||
ecma_free_value (iter_result);
|
||
ecma_free_value (value);
|
||
|
||
ecma_value_t next = task_p->next;
|
||
async_generator_object_p->u.class_prop.u.head = next;
|
||
|
||
JERRY_ASSERT (task_p->operation_value == ECMA_VALUE_UNDEFINED);
|
||
jmem_heap_free_block (task_p, sizeof (ecma_async_generator_task_t));
|
||
|
||
if (!ECMA_IS_INTERNAL_VALUE_NULL (next))
|
||
{
|
||
ecma_value_t executable_object = ecma_make_object_value ((ecma_object_t *) async_generator_object_p);
|
||
ecma_enqueue_promise_async_generator_job (executable_object);
|
||
}
|
||
} /* opfunc_async_generator_yield */
|
||
|
||
/**
|
||
* Implicit class constructor handler when the classHeritage is not present.
|
||
*
|
||
* See also: ECMAScript v6, 14.5.14.10.b.i
|
||
*
|
||
* @return ECMA_VALUE_ERROR - if the function was invoked without 'new'
|
||
* ECMA_VALUE_UNDEFINED - otherwise
|
||
*/
|
||
static ecma_value_t
|
||
ecma_op_implicit_constructor_handler_cb (const ecma_value_t function_obj, /**< the function itself */
|
||
const ecma_value_t this_val, /**< this_arg of the function */
|
||
const ecma_value_t args_p[], /**< argument list */
|
||
const ecma_length_t args_count) /**< argument number */
|
||
{
|
||
JERRY_UNUSED_4 (function_obj, this_val, args_p, args_count);
|
||
|
||
if (JERRY_CONTEXT (current_new_target) == NULL)
|
||
{
|
||
return ecma_raise_type_error (ECMA_ERR_MSG ("Class constructor cannot be invoked without 'new'."));
|
||
}
|
||
|
||
return ECMA_VALUE_UNDEFINED;
|
||
} /* ecma_op_implicit_constructor_handler_cb */
|
||
|
||
/**
|
||
* Implicit class constructor handler when the classHeritage is present.
|
||
*
|
||
* See also: ECMAScript v6, 14.5.14.10.a.i
|
||
*
|
||
* @return ECMA_VALUE_ERROR - if the operation fails
|
||
* result of the super call - otherwise
|
||
*/
|
||
static ecma_value_t
|
||
ecma_op_implicit_constructor_handler_heritage_cb (const ecma_value_t function_obj, /**< the function itself */
|
||
const ecma_value_t this_val, /**< this_arg of the function */
|
||
const ecma_value_t args_p[], /**< argument list */
|
||
const ecma_length_t args_count) /**< argument number */
|
||
{
|
||
JERRY_UNUSED_4 (function_obj, this_val, args_p, args_count);
|
||
|
||
if (JERRY_CONTEXT (current_new_target) == NULL)
|
||
{
|
||
return ecma_raise_type_error (ECMA_ERR_MSG ("Class constructor cannot be invoked without 'new'."));
|
||
}
|
||
|
||
ecma_object_t *func_obj_p = ecma_get_object_from_value (function_obj);
|
||
ecma_value_t super_ctor = ecma_op_function_get_super_constructor (func_obj_p);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (super_ctor))
|
||
{
|
||
return super_ctor;
|
||
}
|
||
|
||
ecma_object_t *super_ctor_p = ecma_get_object_from_value (super_ctor);
|
||
|
||
ecma_value_t result = ecma_op_function_construct (super_ctor_p,
|
||
JERRY_CONTEXT (current_new_target),
|
||
args_p,
|
||
args_count);
|
||
|
||
if (ecma_is_value_object (result))
|
||
{
|
||
ecma_value_t proto_value = ecma_op_object_get_by_magic_id (JERRY_CONTEXT (current_new_target),
|
||
LIT_MAGIC_STRING_PROTOTYPE);
|
||
if (ECMA_IS_VALUE_ERROR (proto_value))
|
||
{
|
||
ecma_free_value (result);
|
||
result = ECMA_VALUE_ERROR;
|
||
}
|
||
else if (ecma_is_value_object (proto_value))
|
||
{
|
||
ECMA_SET_POINTER (ecma_get_object_from_value (result)->u2.prototype_cp,
|
||
ecma_get_object_from_value (proto_value));
|
||
}
|
||
ecma_free_value (proto_value);
|
||
}
|
||
|
||
ecma_deref_object (super_ctor_p);
|
||
|
||
return result;
|
||
} /* ecma_op_implicit_constructor_handler_heritage_cb */
|
||
|
||
/**
|
||
* Create implicit class constructor
|
||
*
|
||
* See also: ECMAScript v6, 14.5.14
|
||
*
|
||
* @return - new external function ecma-object
|
||
*/
|
||
ecma_value_t
|
||
opfunc_create_implicit_class_constructor (uint8_t opcode) /**< current cbc opcode */
|
||
{
|
||
/* 8. */
|
||
ecma_object_t *func_obj_p = ecma_create_object (ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE),
|
||
sizeof (ecma_extended_object_t),
|
||
ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION);
|
||
|
||
ecma_extended_object_t *ext_func_obj_p = (ecma_extended_object_t *) func_obj_p;
|
||
|
||
/* 10.a.i */
|
||
if (opcode == CBC_EXT_PUSH_IMPLICIT_CONSTRUCTOR_HERITAGE)
|
||
{
|
||
ext_func_obj_p->u.external_handler_cb = ecma_op_implicit_constructor_handler_heritage_cb;
|
||
}
|
||
/* 10.b.i */
|
||
else
|
||
{
|
||
ext_func_obj_p->u.external_handler_cb = ecma_op_implicit_constructor_handler_cb;
|
||
}
|
||
|
||
ecma_property_value_t *prop_value_p;
|
||
prop_value_p = ecma_create_named_data_property (func_obj_p,
|
||
ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH),
|
||
ECMA_PROPERTY_FLAG_CONFIGURABLE,
|
||
NULL);
|
||
|
||
prop_value_p->value = ecma_make_uint32_value (0);
|
||
|
||
return ecma_make_object_value (func_obj_p);
|
||
} /* opfunc_create_implicit_class_constructor */
|
||
|
||
/**
|
||
* Set the [[HomeObject]] attribute of the given functon object
|
||
*/
|
||
static inline void JERRY_ATTR_ALWAYS_INLINE
|
||
opfunc_set_home_object (ecma_object_t *func_p, /**< function object */
|
||
ecma_object_t *parent_env_p) /**< parent environment */
|
||
{
|
||
if (ecma_get_object_type (func_p) == ECMA_OBJECT_TYPE_FUNCTION)
|
||
{
|
||
JERRY_ASSERT (!ecma_get_object_is_builtin (func_p));
|
||
|
||
ECMA_SET_NON_NULL_POINTER_TAG (((ecma_extended_object_t *) func_p)->u.function.scope_cp, parent_env_p, 0);
|
||
}
|
||
} /* opfunc_set_home_object */
|
||
|
||
/**
|
||
* ClassDefinitionEvaluation environment initialization part
|
||
*
|
||
* See also: ECMAScript v6, 14.5.14
|
||
*
|
||
* @return - ECMA_VALUE_ERROR - if the operation fails
|
||
* ECMA_VALUE_EMPTY - otherwise
|
||
*/
|
||
void
|
||
opfunc_push_class_environment (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
|
||
ecma_value_t **vm_stack_top, /**< VM stack top */
|
||
ecma_value_t class_name) /**< class name */
|
||
{
|
||
JERRY_ASSERT (ecma_is_value_undefined (class_name) || ecma_is_value_string (class_name));
|
||
ecma_object_t *class_env_p = ecma_create_decl_lex_env (frame_ctx_p->lex_env_p);
|
||
|
||
/* 4.a */
|
||
if (!ecma_is_value_undefined (class_name))
|
||
{
|
||
ecma_op_create_immutable_binding (class_env_p,
|
||
ecma_get_string_from_value (class_name),
|
||
ECMA_VALUE_UNINITIALIZED);
|
||
}
|
||
frame_ctx_p->lex_env_p = class_env_p;
|
||
|
||
*(*vm_stack_top)++ = ECMA_VALUE_RELEASE_LEX_ENV;
|
||
} /* opfunc_push_class_environment */
|
||
|
||
/**
|
||
* ClassDefinitionEvaluation object initialization part
|
||
*
|
||
* See also: ECMAScript v6, 14.5.14
|
||
*
|
||
* @return - ECMA_VALUE_ERROR - if the operation fails
|
||
* ECMA_VALUE_EMPTY - otherwise
|
||
*/
|
||
ecma_value_t
|
||
opfunc_init_class (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
|
||
ecma_value_t *stack_top_p) /**< stack top */
|
||
{
|
||
/* 5.b, 6.e.ii */
|
||
ecma_object_t *ctor_parent_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);
|
||
ecma_object_t *proto_parent_p = NULL;
|
||
bool free_proto_parent = false;
|
||
|
||
ecma_value_t super_class = stack_top_p[-2];
|
||
ecma_object_t *ctor_p = ecma_get_object_from_value (stack_top_p[-1]);
|
||
|
||
bool heritage_present = !ecma_is_value_array_hole (super_class);
|
||
|
||
/* 5. ClassHeritage opt is not present */
|
||
if (!heritage_present)
|
||
{
|
||
/* 5.a */
|
||
proto_parent_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
|
||
}
|
||
else if (!ecma_is_value_null (super_class))
|
||
{
|
||
/* 6.f, 6.g.i */
|
||
if (!ecma_is_constructor (super_class)
|
||
|| ecma_op_function_is_generator (ecma_get_object_from_value (super_class)))
|
||
{
|
||
return ecma_raise_type_error ("Class extends value is not a constructor or null");
|
||
}
|
||
|
||
ecma_object_t *parent_p = ecma_get_object_from_value (super_class);
|
||
|
||
/* 6.g.ii */
|
||
ecma_value_t proto_parent = ecma_op_object_get_by_magic_id (parent_p, LIT_MAGIC_STRING_PROTOTYPE);
|
||
|
||
/* 6.g.iii */
|
||
if (ECMA_IS_VALUE_ERROR (proto_parent))
|
||
{
|
||
return proto_parent;
|
||
}
|
||
|
||
/* 6.g.iv */
|
||
if (ecma_is_value_object (proto_parent))
|
||
{
|
||
proto_parent_p = ecma_get_object_from_value (proto_parent);
|
||
free_proto_parent = true;
|
||
}
|
||
else if (ecma_is_value_null (proto_parent))
|
||
{
|
||
proto_parent_p = NULL;
|
||
}
|
||
else
|
||
{
|
||
ecma_free_value (proto_parent);
|
||
return ecma_raise_type_error ("Property 'prototype' is not an object or null");
|
||
}
|
||
|
||
/* 6.g.v */
|
||
ctor_parent_p = parent_p;
|
||
}
|
||
|
||
/* 7. */
|
||
ecma_object_t *proto_p = ecma_create_object (proto_parent_p, 0, ECMA_OBJECT_TYPE_GENERAL);
|
||
ecma_value_t proto = ecma_make_object_value (proto_p);
|
||
|
||
ECMA_SET_POINTER (ctor_p->u2.prototype_cp, ctor_parent_p);
|
||
|
||
if (free_proto_parent)
|
||
{
|
||
ecma_deref_object (proto_parent_p);
|
||
}
|
||
ecma_free_value (super_class);
|
||
|
||
/* 16. */
|
||
ecma_property_value_t *property_value_p;
|
||
property_value_p = ecma_create_named_data_property (ctor_p,
|
||
ecma_get_magic_string (LIT_MAGIC_STRING_PROTOTYPE),
|
||
ECMA_PROPERTY_FIXED,
|
||
NULL);
|
||
property_value_p->value = proto;
|
||
|
||
/* 18. */
|
||
property_value_p = ecma_create_named_data_property (proto_p,
|
||
ecma_get_magic_string (LIT_MAGIC_STRING_CONSTRUCTOR),
|
||
ECMA_PROPERTY_CONFIGURABLE_WRITABLE,
|
||
NULL);
|
||
property_value_p->value = ecma_make_object_value (ctor_p);
|
||
|
||
if (ecma_get_object_type (ctor_p) == ECMA_OBJECT_TYPE_FUNCTION)
|
||
{
|
||
ecma_object_t *proto_env_p = ecma_create_object_lex_env (frame_ctx_p->lex_env_p,
|
||
proto_p,
|
||
ECMA_LEXICAL_ENVIRONMENT_HOME_OBJECT_BOUND);
|
||
|
||
ECMA_SET_NON_NULL_POINTER_TAG (((ecma_extended_object_t *) ctor_p)->u.function.scope_cp, proto_env_p, 0);
|
||
|
||
/* 15. set F’s [[ConstructorKind]] internal slot to "derived". */
|
||
if (heritage_present)
|
||
{
|
||
ECMA_SET_THIRD_BIT_TO_POINTER_TAG (((ecma_extended_object_t *) ctor_p)->u.function.scope_cp);
|
||
}
|
||
|
||
ecma_deref_object (proto_env_p);
|
||
}
|
||
|
||
stack_top_p[-2] = stack_top_p[-1];
|
||
stack_top_p[-1] = proto;
|
||
|
||
return ECMA_VALUE_EMPTY;
|
||
} /* opfunc_init_class */
|
||
|
||
/**
|
||
* Set [[Enumerable]] and [[HomeObject]] attributes for all class method
|
||
*/
|
||
static void
|
||
opfunc_set_class_attributes (ecma_object_t *obj_p, /**< object */
|
||
ecma_object_t *parent_env_p) /**< parent environment */
|
||
{
|
||
jmem_cpointer_t prop_iter_cp = obj_p->u1.property_list_cp;
|
||
|
||
#if ENABLED (JERRY_PROPRETY_HASHMAP)
|
||
if (prop_iter_cp != JMEM_CP_NULL)
|
||
{
|
||
ecma_property_header_t *prop_iter_p = ECMA_GET_NON_NULL_POINTER (ecma_property_header_t, prop_iter_cp);
|
||
if (prop_iter_p->types[0] == ECMA_PROPERTY_TYPE_HASHMAP)
|
||
{
|
||
prop_iter_cp = prop_iter_p->next_property_cp;
|
||
}
|
||
}
|
||
#endif /* ENABLED (JERRY_PROPRETY_HASHMAP) */
|
||
|
||
while (prop_iter_cp != JMEM_CP_NULL)
|
||
{
|
||
ecma_property_header_t *prop_iter_p = ECMA_GET_NON_NULL_POINTER (ecma_property_header_t, prop_iter_cp);
|
||
JERRY_ASSERT (ECMA_PROPERTY_IS_PROPERTY_PAIR (prop_iter_p));
|
||
|
||
ecma_property_pair_t *property_pair_p = (ecma_property_pair_t *) prop_iter_p;
|
||
|
||
for (uint32_t index = 0; index < ECMA_PROPERTY_PAIR_ITEM_COUNT; index++)
|
||
{
|
||
uint8_t property = property_pair_p->header.types[index];
|
||
|
||
if (ECMA_PROPERTY_GET_TYPE (property) == ECMA_PROPERTY_TYPE_NAMEDDATA)
|
||
{
|
||
if (ecma_is_value_object (property_pair_p->values[index].value)
|
||
&& ecma_is_property_enumerable (property))
|
||
{
|
||
property_pair_p->header.types[index] = (uint8_t) (property & ~ECMA_PROPERTY_FLAG_ENUMERABLE);
|
||
opfunc_set_home_object (ecma_get_object_from_value (property_pair_p->values[index].value), parent_env_p);
|
||
}
|
||
}
|
||
else if (ECMA_PROPERTY_GET_TYPE (property) == ECMA_PROPERTY_TYPE_NAMEDACCESSOR)
|
||
{
|
||
ecma_property_value_t *accessor_objs_p = property_pair_p->values + index;
|
||
|
||
ecma_getter_setter_pointers_t *get_set_pair_p = ecma_get_named_accessor_property (accessor_objs_p);
|
||
|
||
if (get_set_pair_p->getter_cp != JMEM_CP_NULL)
|
||
{
|
||
opfunc_set_home_object (ECMA_GET_NON_NULL_POINTER (ecma_object_t, get_set_pair_p->getter_cp), parent_env_p);
|
||
}
|
||
|
||
if (get_set_pair_p->setter_cp != JMEM_CP_NULL)
|
||
{
|
||
opfunc_set_home_object (ECMA_GET_NON_NULL_POINTER (ecma_object_t, get_set_pair_p->setter_cp), parent_env_p);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
JERRY_ASSERT (ECMA_PROPERTY_GET_TYPE (property) == ECMA_PROPERTY_TYPE_SPECIAL);
|
||
|
||
JERRY_ASSERT (property == ECMA_PROPERTY_TYPE_HASHMAP
|
||
|| property == ECMA_PROPERTY_TYPE_DELETED);
|
||
}
|
||
}
|
||
|
||
prop_iter_cp = prop_iter_p->next_property_cp;
|
||
}
|
||
} /* opfunc_set_class_attributes */
|
||
|
||
/**
|
||
* Pop the current lexical environment referenced by the frame context
|
||
*/
|
||
void
|
||
opfunc_pop_lexical_environment (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
|
||
{
|
||
ecma_object_t *outer_env_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t, frame_ctx_p->lex_env_p->u2.outer_reference_cp);
|
||
ecma_deref_object (frame_ctx_p->lex_env_p);
|
||
frame_ctx_p->lex_env_p = outer_env_p;
|
||
} /* opfunc_pop_lexical_environment */
|
||
|
||
/**
|
||
* ClassDefinitionEvaluation finalization part
|
||
*
|
||
* See also: ECMAScript v6, 14.5.14
|
||
*/
|
||
void
|
||
opfunc_finalize_class (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
|
||
ecma_value_t **vm_stack_top_p, /**< current vm stack top */
|
||
ecma_value_t class_name) /**< class name */
|
||
{
|
||
JERRY_ASSERT (ecma_is_value_undefined (class_name) || ecma_is_value_string (class_name));
|
||
ecma_value_t *stack_top_p = *vm_stack_top_p;
|
||
|
||
ecma_object_t *ctor_p = ecma_get_object_from_value (stack_top_p[-2]);
|
||
ecma_object_t *proto_p = ecma_get_object_from_value (stack_top_p[-1]);
|
||
|
||
ecma_object_t *class_env_p = frame_ctx_p->lex_env_p;
|
||
|
||
/* 23.a */
|
||
if (!ecma_is_value_undefined (class_name))
|
||
{
|
||
ecma_op_initialize_binding (class_env_p, ecma_get_string_from_value (class_name), stack_top_p[-2]);
|
||
}
|
||
|
||
ecma_object_t *ctor_env_p = ecma_create_object_lex_env (class_env_p,
|
||
ctor_p,
|
||
ECMA_LEXICAL_ENVIRONMENT_HOME_OBJECT_BOUND);
|
||
ecma_object_t *proto_env_p = ecma_create_object_lex_env (class_env_p,
|
||
proto_p,
|
||
ECMA_LEXICAL_ENVIRONMENT_HOME_OBJECT_BOUND);
|
||
|
||
opfunc_set_class_attributes (ctor_p, ctor_env_p);
|
||
opfunc_set_class_attributes (proto_p, proto_env_p);
|
||
|
||
ecma_deref_object (proto_env_p);
|
||
ecma_deref_object (ctor_env_p);
|
||
|
||
opfunc_pop_lexical_environment (frame_ctx_p);
|
||
|
||
ecma_deref_object (proto_p);
|
||
|
||
/* only the current class remains on the stack */
|
||
JERRY_ASSERT (stack_top_p[-3] == ECMA_VALUE_RELEASE_LEX_ENV);
|
||
stack_top_p[-3] = stack_top_p[-2];
|
||
*vm_stack_top_p -= 2;
|
||
} /* opfunc_finalize_class */
|
||
|
||
/**
|
||
* MakeSuperPropertyReference operation
|
||
*
|
||
* See also: ECMAScript v6, 12.3.5.3
|
||
*
|
||
* @return ECMA_VALUE_ERROR - if the operation fails
|
||
* ECMA_VALUE_EMPTY - otherwise
|
||
*/
|
||
ecma_value_t
|
||
opfunc_form_super_reference (ecma_value_t **vm_stack_top_p, /**< current vm stack top */
|
||
vm_frame_ctx_t *frame_ctx_p, /**< frame context */
|
||
ecma_value_t prop_name, /**< property name to resolve */
|
||
uint8_t opcode) /**< current cbc opcode */
|
||
{
|
||
ecma_value_t parent = ecma_op_resolve_super_base (frame_ctx_p->lex_env_p);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (parent))
|
||
{
|
||
return ecma_raise_type_error (ECMA_ERR_MSG ("Cannot invoke nullable super method."));
|
||
}
|
||
|
||
if (ECMA_IS_VALUE_ERROR (ecma_op_check_object_coercible (parent)))
|
||
{
|
||
return ECMA_VALUE_ERROR;
|
||
}
|
||
|
||
ecma_value_t *stack_top_p = *vm_stack_top_p;
|
||
|
||
if (opcode >= CBC_EXT_SUPER_PROP_ASSIGNMENT_REFERENCE)
|
||
{
|
||
JERRY_ASSERT (opcode == CBC_EXT_SUPER_PROP_ASSIGNMENT_REFERENCE
|
||
|| opcode == CBC_EXT_SUPER_PROP_LITERAL_ASSIGNMENT_REFERENCE);
|
||
*stack_top_p++ = parent;
|
||
*stack_top_p++ = ecma_copy_value (prop_name);
|
||
*vm_stack_top_p = stack_top_p;
|
||
|
||
return ECMA_VALUE_EMPTY;
|
||
}
|
||
|
||
ecma_object_t *parent_p = ecma_get_object_from_value (parent);
|
||
ecma_string_t *prop_name_p = ecma_op_to_prop_name (prop_name);
|
||
|
||
if (prop_name_p == NULL)
|
||
{
|
||
ecma_deref_object (parent_p);
|
||
return ECMA_VALUE_ERROR;
|
||
}
|
||
|
||
ecma_value_t result = ecma_op_object_get_with_receiver (parent_p, prop_name_p, frame_ctx_p->this_binding);
|
||
ecma_deref_ecma_string (prop_name_p);
|
||
ecma_deref_object (parent_p);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (result))
|
||
{
|
||
return result;
|
||
}
|
||
|
||
if (opcode == CBC_EXT_SUPER_PROP_LITERAL_REFERENCE || opcode == CBC_EXT_SUPER_PROP_REFERENCE)
|
||
{
|
||
*stack_top_p++ = ecma_copy_value (frame_ctx_p->this_binding);
|
||
*stack_top_p++ = ECMA_VALUE_UNDEFINED;
|
||
}
|
||
|
||
*stack_top_p++ = result;
|
||
*vm_stack_top_p = stack_top_p;
|
||
|
||
return ECMA_VALUE_EMPTY;
|
||
} /* opfunc_form_super_reference */
|
||
|
||
/**
|
||
* Assignment operation for SuperRefence base
|
||
*
|
||
* @return ECMA_VALUE_ERROR - if the operation fails
|
||
* ECMA_VALUE_EMPTY - otherwise
|
||
*/
|
||
ecma_value_t
|
||
opfunc_assign_super_reference (ecma_value_t **vm_stack_top_p, /**< vm stack top */
|
||
vm_frame_ctx_t *frame_ctx_p, /**< frame context */
|
||
uint32_t opcode_data) /**< opcode data to store the result */
|
||
{
|
||
ecma_value_t *stack_top_p = *vm_stack_top_p;
|
||
|
||
ecma_value_t base_obj = ecma_op_to_object (stack_top_p[-3]);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (base_obj))
|
||
{
|
||
return base_obj;
|
||
}
|
||
|
||
ecma_object_t *base_obj_p = ecma_get_object_from_value (base_obj);
|
||
ecma_string_t *prop_name_p = ecma_op_to_prop_name (stack_top_p[-2]);
|
||
|
||
if (prop_name_p == NULL)
|
||
{
|
||
ecma_deref_object (base_obj_p);
|
||
return ECMA_VALUE_ERROR;
|
||
}
|
||
|
||
bool is_strict = (frame_ctx_p->bytecode_header_p->status_flags & CBC_CODE_FLAGS_STRICT_MODE) != 0;
|
||
|
||
ecma_value_t result = ecma_op_object_put_with_receiver (base_obj_p,
|
||
prop_name_p,
|
||
stack_top_p[-1],
|
||
frame_ctx_p->this_binding,
|
||
is_strict);
|
||
|
||
ecma_deref_ecma_string (prop_name_p);
|
||
ecma_deref_object (base_obj_p);
|
||
|
||
if (ECMA_IS_VALUE_ERROR (result))
|
||
{
|
||
return result;
|
||
}
|
||
|
||
for (int32_t i = 1; i <= 3; i++)
|
||
{
|
||
ecma_free_value (stack_top_p[-i]);
|
||
}
|
||
|
||
stack_top_p -= 3;
|
||
|
||
if (opcode_data & VM_OC_PUT_STACK)
|
||
{
|
||
*stack_top_p++ = result;
|
||
}
|
||
else if (opcode_data & VM_OC_PUT_BLOCK)
|
||
{
|
||
ecma_fast_free_value (frame_ctx_p->block_result);
|
||
frame_ctx_p->block_result = result;
|
||
}
|
||
|
||
*vm_stack_top_p = stack_top_p;
|
||
|
||
return result;
|
||
} /* opfunc_assign_super_reference */
|
||
#endif /* ENABLED (JERRY_ESNEXT) */
|
||
|
||
/**
|
||
* @}
|
||
* @}
|
||
*/
|