���� JFIF �� � ( %"1"%)+...383,7(-.-
![]() Server : Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.4.20 System : Linux st2.domain.com 3.10.0-1127.10.1.el7.x86_64 #1 SMP Wed Jun 3 14:28:03 UTC 2020 x86_64 User : apache ( 48) PHP Version : 7.4.20 Disable Function : NONE Directory : /home/real/node-v13.0.1/deps/v8/src/builtins/ |
// Copyright 2016 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "src/builtins/builtins-utils-inl.h" #include "src/builtins/builtins.h" #include "src/logging/counters.h" #include "src/objects/keys.h" #include "src/objects/lookup.h" #include "src/objects/objects-inl.h" #include "src/objects/property-descriptor.h" namespace v8 { namespace internal { // ----------------------------------------------------------------------------- // ES6 section 26.1 The Reflect Object // ES6 section 26.1.3 Reflect.defineProperty BUILTIN(ReflectDefineProperty) { HandleScope scope(isolate); DCHECK_EQ(4, args.length()); Handle<Object> target = args.at(1); Handle<Object> key = args.at(2); Handle<Object> attributes = args.at(3); if (!target->IsJSReceiver()) { THROW_NEW_ERROR_RETURN_FAILURE( isolate, NewTypeError(MessageTemplate::kCalledOnNonObject, isolate->factory()->NewStringFromAsciiChecked( "Reflect.defineProperty"))); } Handle<Name> name; ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name, Object::ToName(isolate, key)); PropertyDescriptor desc; if (!PropertyDescriptor::ToPropertyDescriptor(isolate, attributes, &desc)) { return ReadOnlyRoots(isolate).exception(); } Maybe<bool> result = JSReceiver::DefineOwnProperty( isolate, Handle<JSReceiver>::cast(target), name, &desc, Just(kDontThrow)); MAYBE_RETURN(result, ReadOnlyRoots(isolate).exception()); return *isolate->factory()->ToBoolean(result.FromJust()); } // ES6 section 26.1.7 Reflect.getOwnPropertyDescriptor BUILTIN(ReflectGetOwnPropertyDescriptor) { HandleScope scope(isolate); DCHECK_EQ(3, args.length()); Handle<Object> target = args.at(1); Handle<Object> key = args.at(2); if (!target->IsJSReceiver()) { THROW_NEW_ERROR_RETURN_FAILURE( isolate, NewTypeError(MessageTemplate::kCalledOnNonObject, isolate->factory()->NewStringFromAsciiChecked( "Reflect.getOwnPropertyDescriptor"))); } Handle<Name> name; ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name, Object::ToName(isolate, key)); PropertyDescriptor desc; Maybe<bool> found = JSReceiver::GetOwnPropertyDescriptor( isolate, Handle<JSReceiver>::cast(target), name, &desc); MAYBE_RETURN(found, ReadOnlyRoots(isolate).exception()); if (!found.FromJust()) return ReadOnlyRoots(isolate).undefined_value(); return *desc.ToObject(isolate); } // ES6 section 26.1.11 Reflect.ownKeys BUILTIN(ReflectOwnKeys) { HandleScope scope(isolate); DCHECK_EQ(2, args.length()); Handle<Object> target = args.at(1); if (!target->IsJSReceiver()) { THROW_NEW_ERROR_RETURN_FAILURE( isolate, NewTypeError(MessageTemplate::kCalledOnNonObject, isolate->factory()->NewStringFromAsciiChecked( "Reflect.ownKeys"))); } Handle<FixedArray> keys; ASSIGN_RETURN_FAILURE_ON_EXCEPTION( isolate, keys, KeyAccumulator::GetKeys(Handle<JSReceiver>::cast(target), KeyCollectionMode::kOwnOnly, ALL_PROPERTIES, GetKeysConversion::kConvertToString)); return *isolate->factory()->NewJSArrayWithElements(keys); } // ES6 section 26.1.13 Reflect.set BUILTIN(ReflectSet) { HandleScope scope(isolate); Handle<Object> target = args.atOrUndefined(isolate, 1); Handle<Object> key = args.atOrUndefined(isolate, 2); Handle<Object> value = args.atOrUndefined(isolate, 3); Handle<Object> receiver = args.length() > 4 ? args.at(4) : target; if (!target->IsJSReceiver()) { THROW_NEW_ERROR_RETURN_FAILURE( isolate, NewTypeError(MessageTemplate::kCalledOnNonObject, isolate->factory()->NewStringFromAsciiChecked( "Reflect.set"))); } Handle<Name> name; ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name, Object::ToName(isolate, key)); LookupIterator it = LookupIterator::PropertyOrElement( isolate, receiver, name, Handle<JSReceiver>::cast(target)); Maybe<bool> result = Object::SetSuperProperty( &it, value, StoreOrigin::kMaybeKeyed, Just(ShouldThrow::kDontThrow)); MAYBE_RETURN(result, ReadOnlyRoots(isolate).exception()); return *isolate->factory()->ToBoolean(result.FromJust()); } } // namespace internal } // namespace v8