| // Copyright 2012 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/v8.h" |
| |
| #include "src/accessors.h" |
| #include "src/api.h" |
| #include "src/compiler.h" |
| #include "src/contexts.h" |
| #include "src/deoptimizer.h" |
| #include "src/execution.h" |
| #include "src/factory.h" |
| #include "src/frames-inl.h" |
| #include "src/isolate.h" |
| #include "src/list-inl.h" |
| #include "src/property-details.h" |
| #include "src/prototype.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| Handle<AccessorInfo> Accessors::MakeAccessor( |
| Isolate* isolate, |
| Handle<Name> name, |
| AccessorNameGetterCallback getter, |
| AccessorNameSetterCallback setter, |
| PropertyAttributes attributes) { |
| Factory* factory = isolate->factory(); |
| Handle<ExecutableAccessorInfo> info = factory->NewExecutableAccessorInfo(); |
| info->set_property_attributes(attributes); |
| info->set_all_can_read(false); |
| info->set_all_can_write(false); |
| info->set_name(*name); |
| Handle<Object> get = v8::FromCData(isolate, getter); |
| Handle<Object> set = v8::FromCData(isolate, setter); |
| info->set_getter(*get); |
| info->set_setter(*set); |
| return info; |
| } |
| |
| |
| Handle<ExecutableAccessorInfo> Accessors::CloneAccessor( |
| Isolate* isolate, |
| Handle<ExecutableAccessorInfo> accessor) { |
| Factory* factory = isolate->factory(); |
| Handle<ExecutableAccessorInfo> info = factory->NewExecutableAccessorInfo(); |
| info->set_name(accessor->name()); |
| info->set_flag(accessor->flag()); |
| info->set_expected_receiver_type(accessor->expected_receiver_type()); |
| info->set_getter(accessor->getter()); |
| info->set_setter(accessor->setter()); |
| info->set_data(accessor->data()); |
| return info; |
| } |
| |
| |
| static V8_INLINE bool CheckForName(Handle<Name> name, |
| Handle<String> property_name, |
| int offset, |
| int* object_offset) { |
| if (Name::Equals(name, property_name)) { |
| *object_offset = offset; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| // Returns true for properties that are accessors to object fields. |
| // If true, *object_offset contains offset of object field. |
| template <class T> |
| bool Accessors::IsJSObjectFieldAccessor(typename T::TypeHandle type, |
| Handle<Name> name, |
| int* object_offset) { |
| Isolate* isolate = name->GetIsolate(); |
| |
| if (type->Is(T::String())) { |
| return CheckForName(name, isolate->factory()->length_string(), |
| String::kLengthOffset, object_offset); |
| } |
| |
| if (!type->IsClass()) return false; |
| Handle<Map> map = type->AsClass()->Map(); |
| |
| switch (map->instance_type()) { |
| case JS_ARRAY_TYPE: |
| return |
| CheckForName(name, isolate->factory()->length_string(), |
| JSArray::kLengthOffset, object_offset); |
| case JS_TYPED_ARRAY_TYPE: |
| return |
| CheckForName(name, isolate->factory()->length_string(), |
| JSTypedArray::kLengthOffset, object_offset) || |
| CheckForName(name, isolate->factory()->byte_length_string(), |
| JSTypedArray::kByteLengthOffset, object_offset) || |
| CheckForName(name, isolate->factory()->byte_offset_string(), |
| JSTypedArray::kByteOffsetOffset, object_offset); |
| case JS_ARRAY_BUFFER_TYPE: |
| return |
| CheckForName(name, isolate->factory()->byte_length_string(), |
| JSArrayBuffer::kByteLengthOffset, object_offset); |
| case JS_DATA_VIEW_TYPE: |
| return |
| CheckForName(name, isolate->factory()->byte_length_string(), |
| JSDataView::kByteLengthOffset, object_offset) || |
| CheckForName(name, isolate->factory()->byte_offset_string(), |
| JSDataView::kByteOffsetOffset, object_offset); |
| default: |
| return false; |
| } |
| } |
| |
| |
| template |
| bool Accessors::IsJSObjectFieldAccessor<Type>(Type* type, |
| Handle<Name> name, |
| int* object_offset); |
| |
| |
| template |
| bool Accessors::IsJSObjectFieldAccessor<HeapType>(Handle<HeapType> type, |
| Handle<Name> name, |
| int* object_offset); |
| |
| |
| bool SetPropertyOnInstanceIfInherited( |
| Isolate* isolate, const v8::PropertyCallbackInfo<void>& info, |
| v8::Local<v8::Name> name, Handle<Object> value) { |
| Handle<Object> holder = Utils::OpenHandle(*info.Holder()); |
| Handle<Object> receiver = Utils::OpenHandle(*info.This()); |
| if (*holder == *receiver) return false; |
| if (receiver->IsJSObject()) { |
| Handle<JSObject> object = Handle<JSObject>::cast(receiver); |
| // This behaves sloppy since we lost the actual strict-mode. |
| // TODO(verwaest): Fix by making ExecutableAccessorInfo behave like data |
| // properties. |
| if (!object->map()->is_extensible()) return true; |
| JSObject::SetOwnPropertyIgnoreAttributes(object, Utils::OpenHandle(*name), |
| value, NONE).Check(); |
| } |
| return true; |
| } |
| |
| |
| // |
| // Accessors::ArgumentsIterator |
| // |
| |
| |
| void Accessors::ArgumentsIteratorGetter( |
| v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* result = isolate->native_context()->array_values_iterator(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
| } |
| |
| |
| void Accessors::ArgumentsIteratorSetter( |
| v8::Local<v8::Name> name, v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<void>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSObject> object = Utils::OpenHandle(*info.This()); |
| Handle<Object> value = Utils::OpenHandle(*val); |
| |
| if (SetPropertyOnInstanceIfInherited(isolate, info, name, value)) return; |
| |
| LookupIterator it(object, Utils::OpenHandle(*name)); |
| CHECK_EQ(LookupIterator::ACCESSOR, it.state()); |
| DCHECK(it.HolderIsReceiverOrHiddenPrototype()); |
| |
| if (Object::SetDataProperty(&it, value).is_null()) { |
| isolate->OptionalRescheduleException(false); |
| } |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ArgumentsIteratorInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<Name> name(isolate->native_context()->iterator_symbol(), isolate); |
| return MakeAccessor(isolate, name, &ArgumentsIteratorGetter, |
| &ArgumentsIteratorSetter, attributes); |
| } |
| |
| |
| // |
| // Accessors::ArrayLength |
| // |
| |
| |
| // The helper function will 'flatten' Number objects. |
| Handle<Object> Accessors::FlattenNumber(Isolate* isolate, |
| Handle<Object> value) { |
| if (value->IsNumber() || !value->IsJSValue()) return value; |
| Handle<JSValue> wrapper = Handle<JSValue>::cast(value); |
| DCHECK(wrapper->GetIsolate()->native_context()->number_function()-> |
| has_initial_map()); |
| if (wrapper->map() == isolate->number_function()->initial_map()) { |
| return handle(wrapper->value(), isolate); |
| } |
| |
| return value; |
| } |
| |
| |
| void Accessors::ArrayLengthGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| JSArray* holder = JSArray::cast(*Utils::OpenHandle(*info.Holder())); |
| Object* result = holder->length(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
| } |
| |
| |
| void Accessors::ArrayLengthSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<void>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSObject> object = Utils::OpenHandle(*info.This()); |
| Handle<Object> value = Utils::OpenHandle(*val); |
| if (SetPropertyOnInstanceIfInherited(isolate, info, name, value)) { |
| return; |
| } |
| |
| value = FlattenNumber(isolate, value); |
| |
| Handle<JSArray> array_handle = Handle<JSArray>::cast(object); |
| MaybeHandle<Object> maybe; |
| Handle<Object> uint32_v; |
| maybe = Execution::ToUint32(isolate, value); |
| if (!maybe.ToHandle(&uint32_v)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| Handle<Object> number_v; |
| maybe = Execution::ToNumber(isolate, value); |
| if (!maybe.ToHandle(&number_v)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| if (uint32_v->Number() == number_v->Number()) { |
| maybe = JSArray::SetElementsLength(array_handle, uint32_v); |
| if (maybe.is_null()) isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| Handle<Object> exception; |
| maybe = isolate->factory()->NewRangeError("invalid_array_length", |
| HandleVector<Object>(NULL, 0)); |
| if (!maybe.ToHandle(&exception)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| isolate->ScheduleThrow(*exception); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ArrayLengthInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->length_string(), |
| &ArrayLengthGetter, |
| &ArrayLengthSetter, |
| attributes); |
| } |
| |
| |
| |
| // |
| // Accessors::StringLength |
| // |
| |
| void Accessors::StringLengthGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| |
| // We have a slight impedance mismatch between the external API and the way we |
| // use callbacks internally: Externally, callbacks can only be used with |
| // v8::Object, but internally we have callbacks on entities which are higher |
| // in the hierarchy, in this case for String values. |
| |
| Object* value = *Utils::OpenHandle(*v8::Local<v8::Value>(info.This())); |
| if (!value->IsString()) { |
| // Not a string value. That means that we either got a String wrapper or |
| // a Value with a String wrapper in its prototype chain. |
| value = JSValue::cast(*Utils::OpenHandle(*info.Holder()))->value(); |
| } |
| Object* result = Smi::FromInt(String::cast(value)->length()); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate))); |
| } |
| |
| |
| void Accessors::StringLengthSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::StringLengthInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->length_string(), |
| &StringLengthGetter, |
| &StringLengthSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptColumnOffset |
| // |
| |
| |
| void Accessors::ScriptColumnOffsetGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* res = Script::cast(JSValue::cast(object)->value())->column_offset(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| void Accessors::ScriptColumnOffsetSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptColumnOffsetInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("column_offset"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptColumnOffsetGetter, |
| &ScriptColumnOffsetSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptId |
| // |
| |
| |
| void Accessors::ScriptIdGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* id = Script::cast(JSValue::cast(object)->value())->id(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(id, isolate))); |
| } |
| |
| |
| void Accessors::ScriptIdSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptIdInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name( |
| isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("id"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptIdGetter, |
| &ScriptIdSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptName |
| // |
| |
| |
| void Accessors::ScriptNameGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* source = Script::cast(JSValue::cast(object)->value())->name(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(source, isolate))); |
| } |
| |
| |
| void Accessors::ScriptNameSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptNameInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->name_string(), |
| &ScriptNameGetter, |
| &ScriptNameSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptSource |
| // |
| |
| |
| void Accessors::ScriptSourceGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* source = Script::cast(JSValue::cast(object)->value())->source(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(source, isolate))); |
| } |
| |
| |
| void Accessors::ScriptSourceSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptSourceInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->source_string(), |
| &ScriptSourceGetter, |
| &ScriptSourceSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptLineOffset |
| // |
| |
| |
| void Accessors::ScriptLineOffsetGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* res = Script::cast(JSValue::cast(object)->value())->line_offset(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| void Accessors::ScriptLineOffsetSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptLineOffsetInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("line_offset"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptLineOffsetGetter, |
| &ScriptLineOffsetSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptType |
| // |
| |
| |
| void Accessors::ScriptTypeGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* res = Script::cast(JSValue::cast(object)->value())->type(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| void Accessors::ScriptTypeSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptTypeInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name( |
| isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("type"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptTypeGetter, |
| &ScriptTypeSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptCompilationType |
| // |
| |
| |
| void Accessors::ScriptCompilationTypeGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* res = Smi::FromInt( |
| Script::cast(JSValue::cast(object)->value())->compilation_type()); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| void Accessors::ScriptCompilationTypeSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptCompilationTypeInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("compilation_type"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptCompilationTypeGetter, |
| &ScriptCompilationTypeSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetLineEnds |
| // |
| |
| |
| void Accessors::ScriptLineEndsGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> object = Utils::OpenHandle(*info.This()); |
| Handle<Script> script( |
| Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| Script::InitLineEnds(script); |
| DCHECK(script->line_ends()->IsFixedArray()); |
| Handle<FixedArray> line_ends(FixedArray::cast(script->line_ends())); |
| // We do not want anyone to modify this array from JS. |
| DCHECK(*line_ends == isolate->heap()->empty_fixed_array() || |
| line_ends->map() == isolate->heap()->fixed_cow_array_map()); |
| Handle<JSArray> js_array = |
| isolate->factory()->NewJSArrayWithElements(line_ends); |
| info.GetReturnValue().Set(Utils::ToLocal(js_array)); |
| } |
| |
| |
| void Accessors::ScriptLineEndsSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptLineEndsInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("line_ends"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptLineEndsGetter, |
| &ScriptLineEndsSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptSourceUrl |
| // |
| |
| |
| void Accessors::ScriptSourceUrlGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* url = Script::cast(JSValue::cast(object)->value())->source_url(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(url, isolate))); |
| } |
| |
| |
| void Accessors::ScriptSourceUrlSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptSourceUrlInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->source_url_string(), |
| &ScriptSourceUrlGetter, |
| &ScriptSourceUrlSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptSourceMappingUrl |
| // |
| |
| |
| void Accessors::ScriptSourceMappingUrlGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* url = |
| Script::cast(JSValue::cast(object)->value())->source_mapping_url(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(url, isolate))); |
| } |
| |
| |
| void Accessors::ScriptSourceMappingUrlSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptSourceMappingUrlInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->source_mapping_url_string(), |
| &ScriptSourceMappingUrlGetter, |
| &ScriptSourceMappingUrlSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetContextData |
| // |
| |
| |
| void Accessors::ScriptContextDataGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| DisallowHeapAllocation no_allocation; |
| HandleScope scope(isolate); |
| Object* object = *Utils::OpenHandle(*info.This()); |
| Object* res = Script::cast(JSValue::cast(object)->value())->context_data(); |
| info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate))); |
| } |
| |
| |
| void Accessors::ScriptContextDataSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptContextDataInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("context_data"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptContextDataGetter, |
| &ScriptContextDataSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetEvalFromScript |
| // |
| |
| |
| void Accessors::ScriptEvalFromScriptGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> object = Utils::OpenHandle(*info.This()); |
| Handle<Script> script( |
| Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| Handle<Object> result = isolate->factory()->undefined_value(); |
| if (!script->eval_from_shared()->IsUndefined()) { |
| Handle<SharedFunctionInfo> eval_from_shared( |
| SharedFunctionInfo::cast(script->eval_from_shared())); |
| if (eval_from_shared->script()->IsScript()) { |
| Handle<Script> eval_from_script(Script::cast(eval_from_shared->script())); |
| result = Script::GetWrapper(eval_from_script); |
| } |
| } |
| |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| void Accessors::ScriptEvalFromScriptSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptEvalFromScriptInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("eval_from_script"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptEvalFromScriptGetter, |
| &ScriptEvalFromScriptSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetEvalFromScriptPosition |
| // |
| |
| |
| void Accessors::ScriptEvalFromScriptPositionGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> object = Utils::OpenHandle(*info.This()); |
| Handle<Script> script( |
| Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| Handle<Object> result = isolate->factory()->undefined_value(); |
| if (script->compilation_type() == Script::COMPILATION_TYPE_EVAL) { |
| Handle<Code> code(SharedFunctionInfo::cast( |
| script->eval_from_shared())->code()); |
| result = Handle<Object>( |
| Smi::FromInt(code->SourcePosition(code->instruction_start() + |
| script->eval_from_instructions_offset()->value())), |
| isolate); |
| } |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| void Accessors::ScriptEvalFromScriptPositionSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptEvalFromScriptPositionInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("eval_from_script_position"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptEvalFromScriptPositionGetter, |
| &ScriptEvalFromScriptPositionSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::ScriptGetEvalFromFunctionName |
| // |
| |
| |
| void Accessors::ScriptEvalFromFunctionNameGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> object = Utils::OpenHandle(*info.This()); |
| Handle<Script> script( |
| Script::cast(Handle<JSValue>::cast(object)->value()), isolate); |
| Handle<Object> result; |
| Handle<SharedFunctionInfo> shared( |
| SharedFunctionInfo::cast(script->eval_from_shared())); |
| // Find the name of the function calling eval. |
| if (!shared->name()->IsUndefined()) { |
| result = Handle<Object>(shared->name(), isolate); |
| } else { |
| result = Handle<Object>(shared->inferred_name(), isolate); |
| } |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| void Accessors::ScriptEvalFromFunctionNameSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::ScriptEvalFromFunctionNameInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| Handle<String> name(isolate->factory()->InternalizeOneByteString( |
| STATIC_CHAR_VECTOR("eval_from_function_name"))); |
| return MakeAccessor(isolate, |
| name, |
| &ScriptEvalFromFunctionNameGetter, |
| &ScriptEvalFromFunctionNameSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionPrototype |
| // |
| |
| static Handle<Object> GetFunctionPrototype(Isolate* isolate, |
| Handle<JSFunction> function) { |
| if (!function->has_prototype()) { |
| Handle<Object> proto = isolate->factory()->NewFunctionPrototype(function); |
| JSFunction::SetPrototype(function, proto); |
| } |
| return Handle<Object>(function->prototype(), isolate); |
| } |
| |
| |
| MUST_USE_RESULT static MaybeHandle<Object> SetFunctionPrototype( |
| Isolate* isolate, Handle<JSFunction> function, Handle<Object> value) { |
| Handle<Object> old_value; |
| bool is_observed = function->map()->is_observed(); |
| if (is_observed) { |
| if (function->has_prototype()) |
| old_value = handle(function->prototype(), isolate); |
| else |
| old_value = isolate->factory()->NewFunctionPrototype(function); |
| } |
| |
| JSFunction::SetPrototype(function, value); |
| DCHECK(function->prototype() == *value); |
| |
| if (is_observed && !old_value->SameValue(*value)) { |
| MaybeHandle<Object> result = JSObject::EnqueueChangeRecord( |
| function, "update", isolate->factory()->prototype_string(), old_value); |
| if (result.is_null()) return MaybeHandle<Object>(); |
| } |
| |
| return function; |
| } |
| |
| |
| MaybeHandle<Object> Accessors::FunctionSetPrototype(Handle<JSFunction> function, |
| Handle<Object> prototype) { |
| DCHECK(function->should_have_prototype()); |
| Isolate* isolate = function->GetIsolate(); |
| return SetFunctionPrototype(isolate, function, prototype); |
| } |
| |
| |
| void Accessors::FunctionPrototypeGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result = GetFunctionPrototype(isolate, function); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| void Accessors::FunctionPrototypeSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<void>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<Object> value = Utils::OpenHandle(*val); |
| if (SetPropertyOnInstanceIfInherited(isolate, info, name, value)) { |
| return; |
| } |
| Handle<JSFunction> object = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| if (SetFunctionPrototype(isolate, object, value).is_null()) { |
| isolate->OptionalRescheduleException(false); |
| } |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::FunctionPrototypeInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->prototype_string(), |
| &FunctionPrototypeGetter, |
| &FunctionPrototypeSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionLength |
| // |
| |
| |
| void Accessors::FunctionLengthGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| |
| int length = 0; |
| if (function->shared()->is_compiled()) { |
| length = function->shared()->length(); |
| } else { |
| // If the function isn't compiled yet, the length is not computed |
| // correctly yet. Compile it now and return the right length. |
| if (Compiler::EnsureCompiled(function, KEEP_EXCEPTION)) { |
| length = function->shared()->length(); |
| } |
| if (isolate->has_pending_exception()) { |
| isolate->OptionalRescheduleException(false); |
| } |
| } |
| Handle<Object> result(Smi::FromInt(length), isolate); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| void Accessors::FunctionLengthSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<void>& info) { |
| // Function length is non writable, non configurable. |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::FunctionLengthInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->length_string(), |
| &FunctionLengthGetter, |
| &FunctionLengthSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionName |
| // |
| |
| |
| void Accessors::FunctionNameGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result(function->shared()->name(), isolate); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| void Accessors::FunctionNameSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<void>& info) { |
| // Function name is non writable, non configurable. |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::FunctionNameInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->name_string(), |
| &FunctionNameGetter, |
| &FunctionNameSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionArguments |
| // |
| |
| |
| static Handle<Object> ArgumentsForInlinedFunction( |
| JavaScriptFrame* frame, |
| Handle<JSFunction> inlined_function, |
| int inlined_frame_index) { |
| Isolate* isolate = inlined_function->GetIsolate(); |
| Factory* factory = isolate->factory(); |
| SlotRefValueBuilder slot_refs( |
| frame, |
| inlined_frame_index, |
| inlined_function->shared()->formal_parameter_count()); |
| |
| int args_count = slot_refs.args_length(); |
| Handle<JSObject> arguments = |
| factory->NewArgumentsObject(inlined_function, args_count); |
| Handle<FixedArray> array = factory->NewFixedArray(args_count); |
| slot_refs.Prepare(isolate); |
| for (int i = 0; i < args_count; ++i) { |
| Handle<Object> value = slot_refs.GetNext(isolate, 0); |
| array->set(i, *value); |
| } |
| slot_refs.Finish(isolate); |
| arguments->set_elements(*array); |
| |
| // Return the freshly allocated arguments object. |
| return arguments; |
| } |
| |
| |
| static int FindFunctionInFrame(JavaScriptFrame* frame, |
| Handle<JSFunction> function) { |
| DisallowHeapAllocation no_allocation; |
| List<JSFunction*> functions(2); |
| frame->GetFunctions(&functions); |
| for (int i = functions.length() - 1; i >= 0; i--) { |
| if (functions[i] == *function) return i; |
| } |
| return -1; |
| } |
| |
| |
| Handle<Object> GetFunctionArguments(Isolate* isolate, |
| Handle<JSFunction> function) { |
| if (function->shared()->native()) return isolate->factory()->null_value(); |
| |
| // Find the top invocation of the function by traversing frames. |
| for (JavaScriptFrameIterator it(isolate); !it.done(); it.Advance()) { |
| JavaScriptFrame* frame = it.frame(); |
| int function_index = FindFunctionInFrame(frame, function); |
| if (function_index < 0) continue; |
| |
| if (function_index > 0) { |
| // The function in question was inlined. Inlined functions have the |
| // correct number of arguments and no allocated arguments object, so |
| // we can construct a fresh one by interpreting the function's |
| // deoptimization input data. |
| return ArgumentsForInlinedFunction(frame, function, function_index); |
| } |
| |
| if (!frame->is_optimized()) { |
| // If there is an arguments variable in the stack, we return that. |
| Handle<ScopeInfo> scope_info(function->shared()->scope_info()); |
| int index = scope_info->StackSlotIndex( |
| isolate->heap()->arguments_string()); |
| if (index >= 0) { |
| Handle<Object> arguments(frame->GetExpression(index), isolate); |
| if (!arguments->IsArgumentsMarker()) return arguments; |
| } |
| } |
| |
| // If there is no arguments variable in the stack or we have an |
| // optimized frame, we find the frame that holds the actual arguments |
| // passed to the function. |
| it.AdvanceToArgumentsFrame(); |
| frame = it.frame(); |
| |
| // Get the number of arguments and construct an arguments object |
| // mirror for the right frame. |
| const int length = frame->ComputeParametersCount(); |
| Handle<JSObject> arguments = isolate->factory()->NewArgumentsObject( |
| function, length); |
| Handle<FixedArray> array = isolate->factory()->NewFixedArray(length); |
| |
| // Copy the parameters to the arguments object. |
| DCHECK(array->length() == length); |
| for (int i = 0; i < length; i++) array->set(i, frame->GetParameter(i)); |
| arguments->set_elements(*array); |
| |
| // Return the freshly allocated arguments object. |
| return arguments; |
| } |
| |
| // No frame corresponding to the given function found. Return null. |
| return isolate->factory()->null_value(); |
| } |
| |
| |
| Handle<Object> Accessors::FunctionGetArguments(Handle<JSFunction> function) { |
| return GetFunctionArguments(function->GetIsolate(), function); |
| } |
| |
| |
| void Accessors::FunctionArgumentsGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result = GetFunctionArguments(isolate, function); |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| void Accessors::FunctionArgumentsSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<void>& info) { |
| // Function arguments is non writable, non configurable. |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::FunctionArgumentsInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->arguments_string(), |
| &FunctionArgumentsGetter, |
| &FunctionArgumentsSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::FunctionCaller |
| // |
| |
| |
| static inline bool AllowAccessToFunction(Context* current_context, |
| JSFunction* function) { |
| return current_context->HasSameSecurityTokenAs(function->context()); |
| } |
| |
| |
| class FrameFunctionIterator { |
| public: |
| FrameFunctionIterator(Isolate* isolate, const DisallowHeapAllocation& promise) |
| : isolate_(isolate), |
| frame_iterator_(isolate), |
| functions_(2), |
| index_(0) { |
| GetFunctions(); |
| } |
| JSFunction* next() { |
| while (true) { |
| if (functions_.length() == 0) return NULL; |
| JSFunction* next_function = functions_[index_]; |
| index_--; |
| if (index_ < 0) { |
| GetFunctions(); |
| } |
| // Skip functions from other origins. |
| if (!AllowAccessToFunction(isolate_->context(), next_function)) continue; |
| return next_function; |
| } |
| } |
| |
| // Iterate through functions until the first occurence of 'function'. |
| // Returns true if 'function' is found, and false if the iterator ends |
| // without finding it. |
| bool Find(JSFunction* function) { |
| JSFunction* next_function; |
| do { |
| next_function = next(); |
| if (next_function == function) return true; |
| } while (next_function != NULL); |
| return false; |
| } |
| |
| private: |
| void GetFunctions() { |
| functions_.Rewind(0); |
| if (frame_iterator_.done()) return; |
| JavaScriptFrame* frame = frame_iterator_.frame(); |
| frame->GetFunctions(&functions_); |
| DCHECK(functions_.length() > 0); |
| frame_iterator_.Advance(); |
| index_ = functions_.length() - 1; |
| } |
| Isolate* isolate_; |
| JavaScriptFrameIterator frame_iterator_; |
| List<JSFunction*> functions_; |
| int index_; |
| }; |
| |
| |
| MaybeHandle<JSFunction> FindCaller(Isolate* isolate, |
| Handle<JSFunction> function) { |
| DisallowHeapAllocation no_allocation; |
| FrameFunctionIterator it(isolate, no_allocation); |
| if (function->shared()->native()) { |
| return MaybeHandle<JSFunction>(); |
| } |
| // Find the function from the frames. |
| if (!it.Find(*function)) { |
| // No frame corresponding to the given function found. Return null. |
| return MaybeHandle<JSFunction>(); |
| } |
| // Find previously called non-toplevel function. |
| JSFunction* caller; |
| do { |
| caller = it.next(); |
| if (caller == NULL) return MaybeHandle<JSFunction>(); |
| } while (caller->shared()->is_toplevel()); |
| |
| // If caller is a built-in function and caller's caller is also built-in, |
| // use that instead. |
| JSFunction* potential_caller = caller; |
| while (potential_caller != NULL && potential_caller->IsBuiltin()) { |
| caller = potential_caller; |
| potential_caller = it.next(); |
| } |
| if (!caller->shared()->native() && potential_caller != NULL) { |
| caller = potential_caller; |
| } |
| // If caller is bound, return null. This is compatible with JSC, and |
| // allows us to make bound functions use the strict function map |
| // and its associated throwing caller and arguments. |
| if (caller->shared()->bound()) { |
| return MaybeHandle<JSFunction>(); |
| } |
| // Censor if the caller is not a sloppy mode function. |
| // Change from ES5, which used to throw, see: |
| // https://bugs.ecmascript.org/show_bug.cgi?id=310 |
| if (caller->shared()->strict_mode() == STRICT) { |
| return MaybeHandle<JSFunction>(); |
| } |
| // Don't return caller from another security context. |
| if (!AllowAccessToFunction(isolate->context(), caller)) { |
| return MaybeHandle<JSFunction>(); |
| } |
| return Handle<JSFunction>(caller); |
| } |
| |
| |
| void Accessors::FunctionCallerGetter( |
| v8::Local<v8::Name> name, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate()); |
| HandleScope scope(isolate); |
| Handle<JSFunction> function = |
| Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder())); |
| Handle<Object> result; |
| MaybeHandle<JSFunction> maybe_caller; |
| maybe_caller = FindCaller(isolate, function); |
| Handle<JSFunction> caller; |
| if (maybe_caller.ToHandle(&caller)) { |
| result = caller; |
| } else { |
| result = isolate->factory()->null_value(); |
| } |
| info.GetReturnValue().Set(Utils::ToLocal(result)); |
| } |
| |
| |
| void Accessors::FunctionCallerSetter( |
| v8::Local<v8::Name> name, |
| v8::Local<v8::Value> val, |
| const v8::PropertyCallbackInfo<void>& info) { |
| // Function caller is non writable, non configurable. |
| UNREACHABLE(); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::FunctionCallerInfo( |
| Isolate* isolate, PropertyAttributes attributes) { |
| return MakeAccessor(isolate, |
| isolate->factory()->caller_string(), |
| &FunctionCallerGetter, |
| &FunctionCallerSetter, |
| attributes); |
| } |
| |
| |
| // |
| // Accessors::MakeModuleExport |
| // |
| |
| static void ModuleGetExport( |
| v8::Local<v8::String> property, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| JSModule* instance = JSModule::cast(*v8::Utils::OpenHandle(*info.Holder())); |
| Context* context = Context::cast(instance->context()); |
| DCHECK(context->IsModuleContext()); |
| int slot = info.Data()->Int32Value(); |
| Object* value = context->get(slot); |
| Isolate* isolate = instance->GetIsolate(); |
| if (value->IsTheHole()) { |
| Handle<String> name = v8::Utils::OpenHandle(*property); |
| |
| Handle<Object> exception; |
| MaybeHandle<Object> maybe = isolate->factory()->NewReferenceError( |
| "not_defined", HandleVector(&name, 1)); |
| if (!maybe.ToHandle(&exception)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| isolate->ScheduleThrow(*exception); |
| return; |
| } |
| info.GetReturnValue().Set(v8::Utils::ToLocal(Handle<Object>(value, isolate))); |
| } |
| |
| |
| static void ModuleSetExport( |
| v8::Local<v8::String> property, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| JSModule* instance = JSModule::cast(*v8::Utils::OpenHandle(*info.Holder())); |
| Context* context = Context::cast(instance->context()); |
| DCHECK(context->IsModuleContext()); |
| int slot = info.Data()->Int32Value(); |
| Object* old_value = context->get(slot); |
| Isolate* isolate = context->GetIsolate(); |
| if (old_value->IsTheHole()) { |
| Handle<String> name = v8::Utils::OpenHandle(*property); |
| Handle<Object> exception; |
| MaybeHandle<Object> maybe = isolate->factory()->NewReferenceError( |
| "not_defined", HandleVector(&name, 1)); |
| if (!maybe.ToHandle(&exception)) { |
| isolate->OptionalRescheduleException(false); |
| return; |
| } |
| |
| isolate->ScheduleThrow(*exception); |
| return; |
| } |
| context->set(slot, *v8::Utils::OpenHandle(*value)); |
| } |
| |
| |
| Handle<AccessorInfo> Accessors::MakeModuleExport( |
| Handle<String> name, |
| int index, |
| PropertyAttributes attributes) { |
| Isolate* isolate = name->GetIsolate(); |
| Factory* factory = isolate->factory(); |
| Handle<ExecutableAccessorInfo> info = factory->NewExecutableAccessorInfo(); |
| info->set_property_attributes(attributes); |
| info->set_all_can_read(true); |
| info->set_all_can_write(true); |
| info->set_name(*name); |
| info->set_data(Smi::FromInt(index)); |
| Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport); |
| Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport); |
| info->set_getter(*getter); |
| if (!(attributes & ReadOnly)) info->set_setter(*setter); |
| return info; |
| } |
| |
| |
| } } // namespace v8::internal |