ed2be747ad
When accessor getter callback is called the v8::PropertyCallbackInfo::ShouldThrowOnError() is always false, since according to ES6 there's no difference between strict and non-strict property loads. For the setter case the v8::PropertyCallbackInfo::ShouldThrowOnError() returns true if the property is set in strict context. Interceptors follow same idea: for getter, enumerator and query callbacks the v8::PropertyCallbackInfo::ShouldThrowOnError() is always false, and for setter and deleter callback the v8::PropertyCallbackInfo::ShouldThrowOnError() returns true in strict context. This CL also cleans up the CallApiGetterStub and removes bogus asserts from [arm] Push(reg1, reg2, ..., regN) that prevented from pushing a set of registers containing duplicates. BUG=v8:4267 LOG=Y Committed: https://crrev.com/1d3e837fcbbd9d9fd5e72dfe85dfd47c025f3c9f Cr-Commit-Position: refs/heads/master@{#33438} Review URL: https://codereview.chromium.org/1587073003 Cr-Commit-Position: refs/heads/master@{#33461}
1443 lines
45 KiB
C++
1443 lines
45 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/accessors.h"
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#include "src/api.h"
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#include "src/contexts.h"
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#include "src/deoptimizer.h"
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#include "src/execution.h"
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#include "src/factory.h"
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#include "src/frames-inl.h"
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#include "src/isolate-inl.h"
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#include "src/list-inl.h"
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#include "src/messages.h"
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#include "src/property-details.h"
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#include "src/prototype.h"
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namespace v8 {
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namespace internal {
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Handle<AccessorInfo> Accessors::MakeAccessor(
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Isolate* isolate,
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Handle<Name> name,
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AccessorNameGetterCallback getter,
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AccessorNameSetterCallback setter,
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PropertyAttributes attributes) {
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Factory* factory = isolate->factory();
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Handle<AccessorInfo> info = factory->NewAccessorInfo();
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info->set_property_attributes(attributes);
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info->set_all_can_read(false);
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info->set_all_can_write(false);
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info->set_is_special_data_property(true);
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info->set_name(*name);
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Handle<Object> get = v8::FromCData(isolate, getter);
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Handle<Object> set = v8::FromCData(isolate, setter);
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info->set_getter(*get);
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info->set_setter(*set);
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return info;
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}
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static V8_INLINE bool CheckForName(Handle<Name> name,
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Handle<String> property_name,
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int offset,
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int* object_offset) {
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if (Name::Equals(name, property_name)) {
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*object_offset = offset;
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return true;
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}
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return false;
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}
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// Returns true for properties that are accessors to object fields.
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// If true, *object_offset contains offset of object field.
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bool Accessors::IsJSObjectFieldAccessor(Handle<Map> map, Handle<Name> name,
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int* object_offset) {
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Isolate* isolate = name->GetIsolate();
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switch (map->instance_type()) {
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case JS_ARRAY_TYPE:
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return
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CheckForName(name, isolate->factory()->length_string(),
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JSArray::kLengthOffset, object_offset);
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case JS_ARRAY_BUFFER_TYPE:
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return CheckForName(name, isolate->factory()->byte_length_string(),
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JSArrayBuffer::kByteLengthOffset, object_offset);
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default:
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if (map->instance_type() < FIRST_NONSTRING_TYPE) {
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return CheckForName(name, isolate->factory()->length_string(),
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String::kLengthOffset, object_offset);
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}
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return false;
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}
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}
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bool Accessors::IsJSArrayBufferViewFieldAccessor(Handle<Map> map,
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Handle<Name> name,
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int* object_offset) {
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Isolate* isolate = name->GetIsolate();
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switch (map->instance_type()) {
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case JS_TYPED_ARRAY_TYPE: {
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if (!CheckForName(name, isolate->factory()->length_string(),
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JSTypedArray::kLengthOffset, object_offset) &&
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!CheckForName(name, isolate->factory()->byte_length_string(),
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JSTypedArray::kByteLengthOffset, object_offset) &&
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!CheckForName(name, isolate->factory()->byte_offset_string(),
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JSTypedArray::kByteOffsetOffset, object_offset)) {
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return false;
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}
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if (map->is_dictionary_map()) return false;
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// Check if the property is overridden on the instance.
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DescriptorArray* descriptors = map->instance_descriptors();
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int descriptor = descriptors->SearchWithCache(*name, *map);
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if (descriptor != DescriptorArray::kNotFound) return false;
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Handle<Object> proto = Handle<Object>(map->prototype(), isolate);
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if (!proto->IsJSReceiver()) return false;
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// Check if the property is defined in the prototype chain.
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LookupIterator it(proto, name);
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if (!it.IsFound()) return false;
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Object* original_proto =
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JSFunction::cast(map->GetConstructor())->prototype();
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// Property is not configurable. It is enough to verify that
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// the holder is the same.
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return *it.GetHolder<Object>() == original_proto;
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}
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case JS_DATA_VIEW_TYPE:
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return CheckForName(name, isolate->factory()->byte_length_string(),
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JSDataView::kByteLengthOffset, object_offset) ||
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CheckForName(name, isolate->factory()->byte_offset_string(),
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JSDataView::kByteOffsetOffset, object_offset);
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default:
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return false;
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}
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}
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//
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// Accessors::ArgumentsIterator
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//
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void Accessors::ArgumentsIteratorGetter(
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v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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Object* result = isolate->native_context()->array_values_iterator();
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate)));
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}
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void Accessors::ArgumentsIteratorSetter(
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v8::Local<v8::Name> name, v8::Local<v8::Value> val,
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const v8::PropertyCallbackInfo<void>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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HandleScope scope(isolate);
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Handle<JSObject> object_handle =
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Handle<JSObject>::cast(Utils::OpenHandle(*info.This()));
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Handle<Object> value_handle = Utils::OpenHandle(*val);
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Handle<Name> name_handle = Utils::OpenHandle(*name);
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if (JSObject::DefinePropertyOrElementIgnoreAttributes(
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object_handle, name_handle, value_handle, NONE)
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.is_null()) {
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isolate->OptionalRescheduleException(false);
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}
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}
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Handle<AccessorInfo> Accessors::ArgumentsIteratorInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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Handle<Name> name = isolate->factory()->iterator_symbol();
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return MakeAccessor(isolate, name, &ArgumentsIteratorGetter,
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&ArgumentsIteratorSetter, attributes);
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}
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//
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// Accessors::ArrayLength
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//
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void Accessors::ArrayLengthGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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JSArray* holder = JSArray::cast(*Utils::OpenHandle(*info.Holder()));
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Object* result = holder->length();
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate)));
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}
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void Accessors::ArrayLengthSetter(
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v8::Local<v8::Name> name,
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v8::Local<v8::Value> val,
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const v8::PropertyCallbackInfo<void>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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HandleScope scope(isolate);
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Handle<JSReceiver> object = Utils::OpenHandle(*info.This());
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Handle<JSArray> array = Handle<JSArray>::cast(object);
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Handle<Object> length_obj = Utils::OpenHandle(*val);
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uint32_t length = 0;
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if (!JSArray::AnythingToArrayLength(isolate, length_obj, &length)) {
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isolate->OptionalRescheduleException(false);
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return;
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}
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if (JSArray::ObservableSetLength(array, length).is_null()) {
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isolate->OptionalRescheduleException(false);
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}
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if (info.ShouldThrowOnError()) {
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uint32_t actual_new_len = 0;
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CHECK(array->length()->ToArrayLength(&actual_new_len));
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// Throw TypeError if there were non-deletable elements.
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if (actual_new_len != length) {
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Factory* factory = isolate->factory();
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isolate->Throw(*factory->NewTypeError(
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MessageTemplate::kStrictDeleteProperty,
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factory->NewNumberFromUint(actual_new_len - 1), array));
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isolate->OptionalRescheduleException(false);
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}
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}
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}
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Handle<AccessorInfo> Accessors::ArrayLengthInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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return MakeAccessor(isolate,
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isolate->factory()->length_string(),
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&ArrayLengthGetter,
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&ArrayLengthSetter,
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attributes);
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}
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//
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// Accessors::StringLength
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//
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void Accessors::StringLengthGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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// We have a slight impedance mismatch between the external API and the way we
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// use callbacks internally: Externally, callbacks can only be used with
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// v8::Object, but internally we have callbacks on entities which are higher
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// in the hierarchy, in this case for String values.
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Object* value = *Utils::OpenHandle(*v8::Local<v8::Value>(info.This()));
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if (!value->IsString()) {
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// Not a string value. That means that we either got a String wrapper or
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// a Value with a String wrapper in its prototype chain.
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value = JSValue::cast(*Utils::OpenHandle(*info.Holder()))->value();
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}
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Object* result = Smi::FromInt(String::cast(value)->length());
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate)));
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}
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void Accessors::StringLengthSetter(
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v8::Local<v8::Name> name,
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v8::Local<v8::Value> value,
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const v8::PropertyCallbackInfo<void>& info) {
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UNREACHABLE();
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}
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Handle<AccessorInfo> Accessors::StringLengthInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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return MakeAccessor(isolate,
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isolate->factory()->length_string(),
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&StringLengthGetter,
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&StringLengthSetter,
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attributes);
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}
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//
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// Accessors::ScriptColumnOffset
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//
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void Accessors::ScriptColumnOffsetGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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Object* object = *Utils::OpenHandle(*info.This());
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Object* res = Smi::FromInt(
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Script::cast(JSValue::cast(object)->value())->column_offset());
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate)));
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}
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void Accessors::ScriptColumnOffsetSetter(
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v8::Local<v8::Name> name,
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v8::Local<v8::Value> value,
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const v8::PropertyCallbackInfo<void>& info) {
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UNREACHABLE();
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}
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Handle<AccessorInfo> Accessors::ScriptColumnOffsetInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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Handle<String> name(isolate->factory()->InternalizeOneByteString(
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STATIC_CHAR_VECTOR("column_offset")));
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return MakeAccessor(isolate,
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name,
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&ScriptColumnOffsetGetter,
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&ScriptColumnOffsetSetter,
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attributes);
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}
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//
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// Accessors::ScriptId
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//
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void Accessors::ScriptIdGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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Object* object = *Utils::OpenHandle(*info.This());
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Object* id = Smi::FromInt(Script::cast(JSValue::cast(object)->value())->id());
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(id, isolate)));
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}
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void Accessors::ScriptIdSetter(
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v8::Local<v8::Name> name,
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v8::Local<v8::Value> value,
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const v8::PropertyCallbackInfo<void>& info) {
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UNREACHABLE();
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}
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Handle<AccessorInfo> Accessors::ScriptIdInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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Handle<String> name(
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isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("id")));
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return MakeAccessor(isolate,
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name,
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&ScriptIdGetter,
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&ScriptIdSetter,
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attributes);
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}
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//
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// Accessors::ScriptName
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//
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void Accessors::ScriptNameGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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Object* object = *Utils::OpenHandle(*info.This());
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Object* source = Script::cast(JSValue::cast(object)->value())->name();
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(source, isolate)));
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}
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void Accessors::ScriptNameSetter(
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v8::Local<v8::Name> name,
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v8::Local<v8::Value> value,
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const v8::PropertyCallbackInfo<void>& info) {
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UNREACHABLE();
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}
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Handle<AccessorInfo> Accessors::ScriptNameInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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return MakeAccessor(isolate,
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isolate->factory()->name_string(),
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&ScriptNameGetter,
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&ScriptNameSetter,
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attributes);
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}
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//
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// Accessors::ScriptSource
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//
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void Accessors::ScriptSourceGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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Object* object = *Utils::OpenHandle(*info.This());
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Object* source = Script::cast(JSValue::cast(object)->value())->source();
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(source, isolate)));
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}
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void Accessors::ScriptSourceSetter(
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v8::Local<v8::Name> name,
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v8::Local<v8::Value> value,
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const v8::PropertyCallbackInfo<void>& info) {
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UNREACHABLE();
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}
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Handle<AccessorInfo> Accessors::ScriptSourceInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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return MakeAccessor(isolate,
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isolate->factory()->source_string(),
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&ScriptSourceGetter,
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&ScriptSourceSetter,
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attributes);
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}
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//
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// Accessors::ScriptLineOffset
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//
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void Accessors::ScriptLineOffsetGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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Object* object = *Utils::OpenHandle(*info.This());
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Object* res =
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Smi::FromInt(Script::cast(JSValue::cast(object)->value())->line_offset());
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate)));
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}
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void Accessors::ScriptLineOffsetSetter(
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v8::Local<v8::Name> name,
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v8::Local<v8::Value> value,
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const v8::PropertyCallbackInfo<void>& info) {
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UNREACHABLE();
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}
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Handle<AccessorInfo> Accessors::ScriptLineOffsetInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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Handle<String> name(isolate->factory()->InternalizeOneByteString(
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STATIC_CHAR_VECTOR("line_offset")));
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return MakeAccessor(isolate,
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name,
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&ScriptLineOffsetGetter,
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&ScriptLineOffsetSetter,
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attributes);
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}
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//
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// Accessors::ScriptType
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//
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void Accessors::ScriptTypeGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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Object* object = *Utils::OpenHandle(*info.This());
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Object* res =
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Smi::FromInt(Script::cast(JSValue::cast(object)->value())->type());
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info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate)));
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}
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void Accessors::ScriptTypeSetter(
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v8::Local<v8::Name> name,
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v8::Local<v8::Value> value,
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const v8::PropertyCallbackInfo<void>& info) {
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UNREACHABLE();
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}
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Handle<AccessorInfo> Accessors::ScriptTypeInfo(
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Isolate* isolate, PropertyAttributes attributes) {
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Handle<String> name(
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isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("type")));
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return MakeAccessor(isolate,
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name,
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&ScriptTypeGetter,
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&ScriptTypeSetter,
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attributes);
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}
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//
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// Accessors::ScriptCompilationType
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//
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void Accessors::ScriptCompilationTypeGetter(
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v8::Local<v8::Name> name,
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const v8::PropertyCallbackInfo<v8::Value>& info) {
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i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
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DisallowHeapAllocation no_allocation;
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HandleScope scope(isolate);
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Object* object = *Utils::OpenHandle(*info.This());
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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::ScriptIsEmbedderDebugScript
|
|
//
|
|
|
|
|
|
void Accessors::ScriptIsEmbedderDebugScriptGetter(
|
|
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());
|
|
bool is_embedder_debug_script = Script::cast(JSValue::cast(object)->value())
|
|
->origin_options()
|
|
.IsEmbedderDebugScript();
|
|
Object* res = *isolate->factory()->ToBoolean(is_embedder_debug_script);
|
|
info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(res, isolate)));
|
|
}
|
|
|
|
|
|
void Accessors::ScriptIsEmbedderDebugScriptSetter(
|
|
v8::Local<v8::Name> name, v8::Local<v8::Value> value,
|
|
const v8::PropertyCallbackInfo<void>& info) {
|
|
UNREACHABLE();
|
|
}
|
|
|
|
|
|
Handle<AccessorInfo> Accessors::ScriptIsEmbedderDebugScriptInfo(
|
|
Isolate* isolate, PropertyAttributes attributes) {
|
|
Handle<String> name(isolate->factory()->InternalizeOneByteString(
|
|
STATIC_CHAR_VECTOR("is_debugger_script")));
|
|
return MakeAccessor(isolate, name, &ScriptIsEmbedderDebugScriptGetter,
|
|
&ScriptIsEmbedderDebugScriptSetter, 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())),
|
|
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->IsConstructor());
|
|
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);
|
|
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::Compile(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));
|
|
}
|
|
|
|
|
|
MUST_USE_RESULT static MaybeHandle<Object> ReplaceAccessorWithDataProperty(
|
|
Isolate* isolate, Handle<JSObject> object, Handle<Name> name,
|
|
Handle<Object> value, bool is_observed, Handle<Object> old_value) {
|
|
LookupIterator it(object, name);
|
|
CHECK_EQ(LookupIterator::ACCESSOR, it.state());
|
|
DCHECK(it.HolderIsReceiverOrHiddenPrototype());
|
|
it.ReconfigureDataProperty(value, it.property_details().attributes());
|
|
|
|
if (is_observed && !old_value->SameValue(*value)) {
|
|
return JSObject::EnqueueChangeRecord(object, "update", name, old_value);
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
|
|
MUST_USE_RESULT static MaybeHandle<Object> SetFunctionLength(
|
|
Isolate* isolate, Handle<JSFunction> function, Handle<Object> value) {
|
|
Handle<Object> old_value;
|
|
bool is_observed = function->map()->is_observed();
|
|
if (is_observed) {
|
|
old_value = handle(Smi::FromInt(function->shared()->length()), isolate);
|
|
}
|
|
|
|
return ReplaceAccessorWithDataProperty(isolate, function,
|
|
isolate->factory()->length_string(),
|
|
value, is_observed, old_value);
|
|
}
|
|
|
|
|
|
void Accessors::FunctionLengthSetter(
|
|
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);
|
|
|
|
Handle<JSFunction> object =
|
|
Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder()));
|
|
if (SetFunctionLength(isolate, object, value).is_null()) {
|
|
isolate->OptionalRescheduleException(false);
|
|
}
|
|
}
|
|
|
|
|
|
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;
|
|
if (function->shared()->name_should_print_as_anonymous()) {
|
|
result = isolate->factory()->anonymous_string();
|
|
} else {
|
|
result = handle(function->shared()->name(), isolate);
|
|
}
|
|
info.GetReturnValue().Set(Utils::ToLocal(result));
|
|
}
|
|
|
|
|
|
MUST_USE_RESULT static MaybeHandle<Object> SetFunctionName(
|
|
Isolate* isolate, Handle<JSFunction> function, Handle<Object> value) {
|
|
Handle<Object> old_value;
|
|
bool is_observed = function->map()->is_observed();
|
|
if (is_observed) {
|
|
old_value = handle(function->shared()->name(), isolate);
|
|
}
|
|
|
|
return ReplaceAccessorWithDataProperty(isolate, function,
|
|
isolate->factory()->name_string(),
|
|
value, is_observed, old_value);
|
|
}
|
|
|
|
|
|
void Accessors::FunctionNameSetter(
|
|
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);
|
|
|
|
Handle<JSFunction> object =
|
|
Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder()));
|
|
if (SetFunctionName(isolate, object, value).is_null()) {
|
|
isolate->OptionalRescheduleException(false);
|
|
}
|
|
}
|
|
|
|
|
|
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();
|
|
|
|
TranslatedState translated_values(frame);
|
|
translated_values.Prepare(false, frame->fp());
|
|
|
|
int argument_count = 0;
|
|
TranslatedFrame* translated_frame =
|
|
translated_values.GetArgumentsInfoFromJSFrameIndex(inlined_frame_index,
|
|
&argument_count);
|
|
TranslatedFrame::iterator iter = translated_frame->begin();
|
|
|
|
// Skip the function.
|
|
iter++;
|
|
|
|
// Skip the receiver.
|
|
iter++;
|
|
argument_count--;
|
|
|
|
Handle<JSObject> arguments =
|
|
factory->NewArgumentsObject(inlined_function, argument_count);
|
|
Handle<FixedArray> array = factory->NewFixedArray(argument_count);
|
|
bool should_deoptimize = false;
|
|
for (int i = 0; i < argument_count; ++i) {
|
|
// If we materialize any object, we should deopt because we might alias
|
|
// an object that was eliminated by escape analysis.
|
|
should_deoptimize = should_deoptimize || iter->IsMaterializedObject();
|
|
Handle<Object> value = iter->GetValue();
|
|
array->set(i, *value);
|
|
iter++;
|
|
}
|
|
arguments->set_elements(*array);
|
|
|
|
if (should_deoptimize) {
|
|
translated_values.StoreMaterializedValuesAndDeopt();
|
|
}
|
|
|
|
// 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);
|
|
}
|
|
|
|
// 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->shared()->IsBuiltin()) {
|
|
caller = potential_caller;
|
|
potential_caller = it.next();
|
|
}
|
|
if (!caller->shared()->native() && potential_caller != NULL) {
|
|
caller = potential_caller;
|
|
}
|
|
// 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 (is_strict(caller->shared()->language_mode())) {
|
|
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::Name> 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());
|
|
Isolate* isolate = instance->GetIsolate();
|
|
int slot = info.Data()
|
|
->Int32Value(info.GetIsolate()->GetCurrentContext())
|
|
.FromMaybe(-1);
|
|
if (slot < 0 || slot >= context->length()) {
|
|
Handle<Name> name = v8::Utils::OpenHandle(*property);
|
|
|
|
Handle<Object> exception = isolate->factory()->NewReferenceError(
|
|
MessageTemplate::kNotDefined, name);
|
|
isolate->ScheduleThrow(*exception);
|
|
return;
|
|
}
|
|
Object* value = context->get(slot);
|
|
if (value->IsTheHole()) {
|
|
Handle<Name> name = v8::Utils::OpenHandle(*property);
|
|
|
|
Handle<Object> exception = isolate->factory()->NewReferenceError(
|
|
MessageTemplate::kNotDefined, name);
|
|
isolate->ScheduleThrow(*exception);
|
|
return;
|
|
}
|
|
info.GetReturnValue().Set(v8::Utils::ToLocal(Handle<Object>(value, isolate)));
|
|
}
|
|
|
|
|
|
static void ModuleSetExport(v8::Local<v8::Name> property,
|
|
v8::Local<v8::Value> value,
|
|
const v8::PropertyCallbackInfo<void>& info) {
|
|
if (!info.ShouldThrowOnError()) return;
|
|
Handle<Name> name = v8::Utils::OpenHandle(*property);
|
|
Isolate* isolate = name->GetIsolate();
|
|
Handle<Object> exception =
|
|
isolate->factory()->NewTypeError(MessageTemplate::kNotDefined, name);
|
|
isolate->ScheduleThrow(*exception);
|
|
}
|
|
|
|
|
|
Handle<AccessorInfo> Accessors::MakeModuleExport(
|
|
Handle<String> name,
|
|
int index,
|
|
PropertyAttributes attributes) {
|
|
Isolate* isolate = name->GetIsolate();
|
|
Handle<AccessorInfo> info = MakeAccessor(isolate, name, &ModuleGetExport,
|
|
&ModuleSetExport, attributes);
|
|
info->set_data(Smi::FromInt(index));
|
|
return info;
|
|
}
|
|
|
|
|
|
} // namespace internal
|
|
} // namespace v8
|