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cef/libcef/renderer/v8_impl.cc

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// Copyright (c) 2013 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
// MSVC++ requires this to be set before any other includes to get M_PI.
// Otherwise there will be compile errors in wtf/MathExtras.h.
#define _USE_MATH_DEFINES
#include <map>
#include <string>
#include "base/command_line.h"
#include "build/build_config.h"
// Enable deprecation warnings for MSVC and Clang. See http://crbug.com/585142.
#if BUILDFLAG(IS_WIN)
#if defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wdeprecated-declarations"
#else
#pragma warning(push)
#pragma warning(default : 4996)
#endif
#endif
#include "libcef/renderer/v8_impl.h"
#include "libcef/common/app_manager.h"
#include "libcef/common/cef_switches.h"
#include "libcef/common/task_runner_impl.h"
#include "libcef/common/tracker.h"
#include "libcef/renderer/blink_glue.h"
#include "libcef/renderer/browser_impl.h"
#include "libcef/renderer/render_frame_util.h"
#include "libcef/renderer/thread_util.h"
#include "base/auto_reset.h"
#include "base/functional/bind.h"
#include "base/lazy_instance.h"
#include "base/strings/string_number_conversions.h"
#include "third_party/abseil-cpp/absl/base/attributes.h"
#include "third_party/blink/public/web/blink.h"
#include "third_party/blink/public/web/web_frame.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_script_controller.h"
#include "url/gurl.h"
namespace {
static const char kCefTrackObject[] = "Cef::TrackObject";
void MessageListenerCallbackImpl(v8::Handle<v8::Message> message,
v8::Handle<v8::Value> data);
// The following *Private functions are convenience wrappers for methods on
// v8::Object with the corresponding names.
// Based on extensions/renderer/object_backed_native_handler.cc.
void SetPrivate(v8::Local<v8::Context> context,
v8::Local<v8::Object> obj,
const char* key,
v8::Local<v8::Value> value) {
v8::Isolate* isolate = context->GetIsolate();
obj->SetPrivate(context,
v8::Private::ForApi(
isolate, v8::String::NewFromUtf8(
isolate, key, v8::NewStringType::kNormal)
.ToLocalChecked()),
value)
.FromJust();
}
bool GetPrivate(v8::Local<v8::Context> context,
v8::Local<v8::Object> obj,
const char* key,
v8::Local<v8::Value>* result) {
v8::Isolate* isolate = context->GetIsolate();
return obj
->GetPrivate(context,
v8::Private::ForApi(
isolate, v8::String::NewFromUtf8(
isolate, key, v8::NewStringType::kNormal)
.ToLocalChecked()))
.ToLocal(result);
}
// Chromium uses the default Isolate for the main render process thread and a
// new Isolate for each WebWorker thread. Continue this pattern by tracking
// Isolate information on a per-thread basis. This implementation will need to
// be re-worked (perhaps using a map keyed on v8::Isolate::GetCurrent()) if
// in the future Chromium begins using the same Isolate across multiple threads.
class CefV8IsolateManager;
ABSL_CONST_INIT thread_local CefV8IsolateManager* g_isolate_manager = nullptr;
// Manages memory and state information associated with a single Isolate.
class CefV8IsolateManager {
public:
CefV8IsolateManager()
: resetter_(&g_isolate_manager, this),
isolate_(v8::Isolate::GetCurrent()),
task_runner_(CEF_RENDER_TASK_RUNNER()),
message_listener_registered_(false),
worker_id_(0) {
DCHECK(isolate_);
DCHECK(task_runner_.get());
}
~CefV8IsolateManager() = default;
static CefV8IsolateManager* Get() { return g_isolate_manager; }
void Destroy() {
DCHECK_EQ(isolate_, v8::Isolate::GetCurrent());
DCHECK(context_map_.empty());
delete this;
}
scoped_refptr<CefV8ContextState> GetContextState(
v8::Local<v8::Context> context) {
DCHECK_EQ(isolate_, v8::Isolate::GetCurrent());
DCHECK(context.IsEmpty() || isolate_ == context->GetIsolate());
if (context.IsEmpty()) {
if (isolate_->InContext()) {
context = isolate_->GetCurrentContext();
} else {
return scoped_refptr<CefV8ContextState>();
}
}
int hash = context->Global()->GetIdentityHash();
ContextMap::const_iterator it = context_map_.find(hash);
if (it != context_map_.end()) {
return it->second;
}
scoped_refptr<CefV8ContextState> state = new CefV8ContextState();
context_map_.insert(std::make_pair(hash, state));
return state;
}
void ReleaseContext(v8::Local<v8::Context> context) {
DCHECK_EQ(isolate_, v8::Isolate::GetCurrent());
DCHECK_EQ(isolate_, context->GetIsolate());
int hash = context->Global()->GetIdentityHash();
ContextMap::iterator it = context_map_.find(hash);
if (it != context_map_.end()) {
it->second->Detach();
context_map_.erase(it);
}
}
void AddGlobalTrackObject(CefTrackNode* object) {
DCHECK_EQ(isolate_, v8::Isolate::GetCurrent());
global_manager_.Add(object);
}
void DeleteGlobalTrackObject(CefTrackNode* object) {
DCHECK_EQ(isolate_, v8::Isolate::GetCurrent());
global_manager_.Delete(object);
}
void SetUncaughtExceptionStackSize(int stack_size) {
if (stack_size <= 0) {
return;
}
if (!message_listener_registered_) {
isolate_->AddMessageListener(&MessageListenerCallbackImpl);
message_listener_registered_ = true;
}
isolate_->SetCaptureStackTraceForUncaughtExceptions(
true, stack_size, v8::StackTrace::kDetailed);
}
void SetWorkerAttributes(int worker_id, const GURL& worker_url) {
worker_id_ = worker_id;
worker_url_ = worker_url;
}
v8::Isolate* isolate() const { return isolate_; }
scoped_refptr<base::SingleThreadTaskRunner> task_runner() const {
return task_runner_;
}
int worker_id() const { return worker_id_; }
const GURL& worker_url() const { return worker_url_; }
private:
const base::AutoReset<CefV8IsolateManager*> resetter_;
v8::Isolate* isolate_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
using ContextMap = std::map<int, scoped_refptr<CefV8ContextState>>;
ContextMap context_map_;
// Used for globally tracked objects that are not associated with a particular
// context.
CefTrackManager global_manager_;
// True if the message listener has been registered.
bool message_listener_registered_;
// Attributes associated with WebWorker threads.
int worker_id_;
GURL worker_url_;
};
class V8TrackObject : public CefTrackNode {
public:
explicit V8TrackObject(v8::Isolate* isolate)
: isolate_(isolate), external_memory_(0) {
DCHECK(isolate_);
isolate_->AdjustAmountOfExternalAllocatedMemory(
static_cast<int>(sizeof(V8TrackObject)));
}
~V8TrackObject() {
isolate_->AdjustAmountOfExternalAllocatedMemory(
-static_cast<int>(sizeof(V8TrackObject)) - external_memory_);
}
inline int GetExternallyAllocatedMemory() { return external_memory_; }
int AdjustExternallyAllocatedMemory(int change_in_bytes) {
int new_value = external_memory_ + change_in_bytes;
if (new_value < 0) {
NOTREACHED() << "External memory usage cannot be less than 0 bytes";
change_in_bytes = -(external_memory_);
new_value = 0;
}
if (change_in_bytes != 0) {
isolate_->AdjustAmountOfExternalAllocatedMemory(change_in_bytes);
}
external_memory_ = new_value;
return new_value;
}
inline void SetAccessor(CefRefPtr<CefV8Accessor> accessor) {
accessor_ = accessor;
}
inline CefRefPtr<CefV8Accessor> GetAccessor() { return accessor_; }
inline void SetInterceptor(CefRefPtr<CefV8Interceptor> interceptor) {
interceptor_ = interceptor;
}
inline CefRefPtr<CefV8Interceptor> GetInterceptor() { return interceptor_; }
inline void SetHandler(CefRefPtr<CefV8Handler> handler) {
handler_ = handler;
}
inline CefRefPtr<CefV8Handler> GetHandler() { return handler_; }
inline void SetUserData(CefRefPtr<CefBaseRefCounted> user_data) {
user_data_ = user_data;
}
inline CefRefPtr<CefBaseRefCounted> GetUserData() { return user_data_; }
// Attach this track object to the specified V8 object.
void AttachTo(v8::Local<v8::Context> context, v8::Local<v8::Object> object) {
SetPrivate(context, object, kCefTrackObject,
v8::External::New(isolate_, this));
}
// Retrieve the track object for the specified V8 object.
static V8TrackObject* Unwrap(v8::Local<v8::Context> context,
v8::Local<v8::Object> object) {
v8::Local<v8::Value> value;
if (GetPrivate(context, object, kCefTrackObject, &value) &&
value->IsExternal()) {
return static_cast<V8TrackObject*>(v8::External::Cast(*value)->Value());
}
return nullptr;
}
private:
v8::Isolate* isolate_;
CefRefPtr<CefV8Accessor> accessor_;
CefRefPtr<CefV8Interceptor> interceptor_;
CefRefPtr<CefV8Handler> handler_;
CefRefPtr<CefBaseRefCounted> user_data_;
int external_memory_;
};
class V8TrackString : public CefTrackNode {
public:
explicit V8TrackString(const std::string& str) : string_(str) {}
const char* GetString() { return string_.c_str(); }
private:
std::string string_;
};
class V8TrackArrayBuffer : public CefTrackNode {
public:
explicit V8TrackArrayBuffer(
v8::Isolate* isolate,
CefRefPtr<CefV8ArrayBufferReleaseCallback> release_callback)
: isolate_(isolate), release_callback_(release_callback) {
DCHECK(isolate_);
isolate_->AdjustAmountOfExternalAllocatedMemory(
static_cast<int>(sizeof(V8TrackArrayBuffer)));
}
~V8TrackArrayBuffer() {
isolate_->AdjustAmountOfExternalAllocatedMemory(
-static_cast<int>(sizeof(V8TrackArrayBuffer)));
}
CefRefPtr<CefV8ArrayBufferReleaseCallback> GetReleaseCallback() {
return release_callback_;
}
// Attach this track object to the specified V8 object.
void AttachTo(v8::Local<v8::Context> context,
v8::Local<v8::ArrayBuffer> arrayBuffer) {
SetPrivate(context, arrayBuffer, kCefTrackObject,
v8::External::New(isolate_, this));
}
// Retrieve the track object for the specified V8 object.
static V8TrackArrayBuffer* Unwrap(v8::Local<v8::Context> context,
v8::Local<v8::Object> object) {
v8::Local<v8::Value> value;
if (GetPrivate(context, object, kCefTrackObject, &value) &&
value->IsExternal()) {
return static_cast<V8TrackArrayBuffer*>(
v8::External::Cast(*value)->Value());
}
return nullptr;
}
private:
v8::Isolate* isolate_;
CefRefPtr<CefV8ArrayBufferReleaseCallback> release_callback_;
};
// Object wrapped in a v8::External and passed as the Data argument to
// v8::FunctionTemplate::New.
class V8FunctionData {
public:
static v8::Local<v8::External> Create(v8::Isolate* isolate,
const CefString& function_name,
CefRefPtr<CefV8Handler> handler) {
// |data| will be deleted if/when the returned v8::External is GC'd.
V8FunctionData* data = new V8FunctionData(isolate, function_name, handler);
return data->CreateExternal();
}
static V8FunctionData* Unwrap(v8::Local<v8::Value> data) {
DCHECK(data->IsExternal());
return static_cast<V8FunctionData*>(v8::External::Cast(*data)->Value());
}
CefString function_name() const { return function_name_; }
CefV8Handler* handler() const {
if (!handler_) {
return nullptr;
}
return handler_.get();
}
private:
V8FunctionData(v8::Isolate* isolate,
const CefString& function_name,
CefRefPtr<CefV8Handler> handler)
: isolate_(isolate), function_name_(function_name), handler_(handler) {
DCHECK(isolate_);
DCHECK(handler_);
}
~V8FunctionData() {
isolate_->AdjustAmountOfExternalAllocatedMemory(
-static_cast<int>(sizeof(V8FunctionData)));
handler_ = nullptr;
function_name_ = "FreedFunction";
}
v8::Local<v8::External> CreateExternal() {
v8::Local<v8::External> external = v8::External::New(isolate_, this);
isolate_->AdjustAmountOfExternalAllocatedMemory(
static_cast<int>(sizeof(V8FunctionData)));
handle_.Reset(isolate_, external);
handle_.SetWeak(this, FirstWeakCallback, v8::WeakCallbackType::kParameter);
return external;
}
static void FirstWeakCallback(
const v8::WeakCallbackInfo<V8FunctionData>& data) {
V8FunctionData* wrapper = data.GetParameter();
wrapper->handle_.Reset();
data.SetSecondPassCallback(SecondWeakCallback);
}
static void SecondWeakCallback(
const v8::WeakCallbackInfo<V8FunctionData>& data) {
V8FunctionData* wrapper = data.GetParameter();
delete wrapper;
}
v8::Isolate* isolate_;
CefString function_name_;
CefRefPtr<CefV8Handler> handler_;
v8::Persistent<v8::External> handle_;
};
// Convert a CefString to a V8::String.
v8::Local<v8::String> GetV8String(v8::Isolate* isolate, const CefString& str) {
#if defined(CEF_STRING_TYPE_UTF16)
// Already a UTF16 string.
return v8::String::NewFromTwoByte(
isolate,
reinterpret_cast<uint16_t*>(
const_cast<CefString::char_type*>(str.c_str())),
v8::NewStringType::kNormal, str.length())
.ToLocalChecked();
#elif defined(CEF_STRING_TYPE_UTF8)
// Already a UTF8 string.
return v8::String::NewFromUtf8(isolate, const_cast<char*>(str.c_str()),
v8::NewStringType::kNormal, str.length())
.ToLocalChecked();
#else
// Convert the string to UTF8.
std::string tmpStr = str;
return v8::String::NewFromUtf8(isolate, tmpStr.c_str(),
v8::NewStringType::kNormal, tmpStr.length())
.ToLocalChecked();
#endif
}
#if defined(CEF_STRING_TYPE_UTF16)
void v8impl_string_dtor(char16* str) {
delete[] str;
}
#elif defined(CEF_STRING_TYPE_UTF8)
void v8impl_string_dtor(char* str) {
delete[] str;
}
#endif
// Convert a v8::String to CefString.
void GetCefString(v8::Isolate* isolate,
v8::Local<v8::String> str,
CefString& out) {
if (str.IsEmpty()) {
return;
}
#if defined(CEF_STRING_TYPE_WIDE)
// Allocate enough space for a worst-case conversion.
int len = str->Utf8Length();
if (len == 0) {
return;
}
char* buf = new char[len + 1];
str->WriteUtf8(isolate, buf, len + 1);
// Perform conversion to the wide type.
cef_string_t* retws = out.GetWritableStruct();
cef_string_utf8_to_wide(buf, len, retws);
delete[] buf;
#else // !defined(CEF_STRING_TYPE_WIDE)
#if defined(CEF_STRING_TYPE_UTF16)
int len = str->Length();
if (len == 0) {
return;
}
char16* buf = new char16[len + 1];
str->Write(isolate, reinterpret_cast<uint16_t*>(buf), 0, len + 1);
#else
// Allocate enough space for a worst-case conversion.
int len = str->Utf8Length();
if (len == 0) {
return;
}
char* buf = new char[len + 1];
str->WriteUtf8(isolate, buf, len + 1);
#endif
// Don't perform an extra string copy.
out.clear();
cef_string_t* retws = out.GetWritableStruct();
retws->str = buf;
retws->length = len;
retws->dtor = v8impl_string_dtor;
#endif // !defined(CEF_STRING_TYPE_WIDE)
}
// V8 function callback.
void FunctionCallbackImpl(const v8::FunctionCallbackInfo<v8::Value>& info) {
v8::Isolate* isolate = info.GetIsolate();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
V8FunctionData* data = V8FunctionData::Unwrap(info.Data());
if (!data->handler()) {
// handler has gone away, bail!
info.GetReturnValue().SetUndefined();
return;
}
CefV8ValueList params;
for (int i = 0; i < info.Length(); i++) {
params.push_back(new CefV8ValueImpl(isolate, context, info[i]));
}
CefRefPtr<CefV8Value> object =
new CefV8ValueImpl(isolate, context, info.This());
CefRefPtr<CefV8Value> retval;
CefString exception;
if (data->handler()->Execute(data->function_name(), object, params, retval,
exception)) {
if (!exception.empty()) {
info.GetReturnValue().Set(isolate->ThrowException(
v8::Exception::Error(GetV8String(isolate, exception))));
return;
} else {
CefV8ValueImpl* rv = static_cast<CefV8ValueImpl*>(retval.get());
if (rv && rv->IsValid()) {
info.GetReturnValue().Set(rv->GetV8Value(true));
return;
}
}
}
info.GetReturnValue().SetUndefined();
}
// V8 Accessor callbacks
void AccessorNameGetterCallbackImpl(
v8::Local<v8::Name> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
v8::Isolate* isolate = info.GetIsolate();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::Object> obj = info.This();
CefRefPtr<CefV8Accessor> accessorPtr;
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
accessorPtr = tracker->GetAccessor();
}
if (accessorPtr.get()) {
CefRefPtr<CefV8Value> retval;
CefRefPtr<CefV8Value> object = new CefV8ValueImpl(isolate, context, obj);
CefString name, exception;
GetCefString(isolate, v8::Local<v8::String>::Cast(property), name);
if (accessorPtr->Get(name, object, retval, exception)) {
if (!exception.empty()) {
info.GetReturnValue().Set(isolate->ThrowException(
v8::Exception::Error(GetV8String(isolate, exception))));
return;
} else {
CefV8ValueImpl* rv = static_cast<CefV8ValueImpl*>(retval.get());
if (rv && rv->IsValid()) {
info.GetReturnValue().Set(rv->GetV8Value(true));
return;
}
}
}
}
return info.GetReturnValue().SetUndefined();
}
void AccessorNameSetterCallbackImpl(
v8::Local<v8::Name> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<void>& info) {
v8::Isolate* isolate = info.GetIsolate();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::Object> obj = info.This();
CefRefPtr<CefV8Accessor> accessorPtr;
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
accessorPtr = tracker->GetAccessor();
}
if (accessorPtr.get()) {
CefRefPtr<CefV8Value> object = new CefV8ValueImpl(isolate, context, obj);
CefRefPtr<CefV8Value> cefValue =
new CefV8ValueImpl(isolate, context, value);
CefString name, exception;
GetCefString(isolate, v8::Local<v8::String>::Cast(property), name);
accessorPtr->Set(name, object, cefValue, exception);
if (!exception.empty()) {
isolate->ThrowException(
v8::Exception::Error(GetV8String(isolate, exception)));
return;
}
}
}
// Two helper functions for V8 Interceptor callbacks.
CefString PropertyToIndex(v8::Isolate* isolate, v8::Local<v8::Name> property) {
CefString name;
GetCefString(isolate, property.As<v8::String>(), name);
return name;
}
int PropertyToIndex(v8::Isolate* isolate, uint32_t index) {
return static_cast<int>(index);
}
// V8 Interceptor callbacks.
// T == v8::Local<v8::Name> for named property handlers and
// T == uint32_t for indexed property handlers
template <typename T>
void InterceptorGetterCallbackImpl(
T property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
v8::Isolate* isolate = info.GetIsolate();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Handle<v8::Object> obj = info.This();
CefRefPtr<CefV8Interceptor> interceptorPtr;
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
interceptorPtr = tracker->GetInterceptor();
}
if (!interceptorPtr.get()) {
return;
}
CefRefPtr<CefV8Value> object = new CefV8ValueImpl(isolate, context, obj);
CefRefPtr<CefV8Value> retval;
CefString exception;
interceptorPtr->Get(PropertyToIndex(isolate, property), object, retval,
exception);
if (!exception.empty()) {
info.GetReturnValue().Set(isolate->ThrowException(
v8::Exception::Error(GetV8String(isolate, exception))));
} else {
CefV8ValueImpl* retval_impl = static_cast<CefV8ValueImpl*>(retval.get());
if (retval_impl && retval_impl->IsValid()) {
info.GetReturnValue().Set(retval_impl->GetV8Value(true));
}
}
}
template <typename T>
void InterceptorSetterCallbackImpl(
T property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<v8::Value>& info) {
v8::Isolate* isolate = info.GetIsolate();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Handle<v8::Object> obj = info.This();
CefRefPtr<CefV8Interceptor> interceptorPtr;
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
interceptorPtr = tracker->GetInterceptor();
}
if (!interceptorPtr.get()) {
return;
}
CefRefPtr<CefV8Value> object = new CefV8ValueImpl(isolate, context, obj);
CefRefPtr<CefV8Value> cefValue = new CefV8ValueImpl(isolate, context, value);
CefString exception;
interceptorPtr->Set(PropertyToIndex(isolate, property), object, cefValue,
exception);
if (!exception.empty()) {
isolate->ThrowException(
v8::Exception::Error(GetV8String(isolate, exception)));
}
}
// V8 extension registration.
class ExtensionWrapper : public v8::Extension {
public:
ExtensionWrapper(const char* extension_name,
const char* javascript_code,
CefV8Handler* handler)
: v8::Extension(extension_name, javascript_code), handler_(handler) {}
v8::Handle<v8::FunctionTemplate> GetNativeFunctionTemplate(
v8::Isolate* isolate,
v8::Handle<v8::String> name) override {
if (!handler_) {
return v8::Local<v8::FunctionTemplate>();
}
CefString func_name;
GetCefString(isolate, name, func_name);
v8::Local<v8::External> function_data =
V8FunctionData::Create(isolate, func_name, handler_);
return v8::FunctionTemplate::New(isolate, FunctionCallbackImpl,
function_data);
}
private:
CefV8Handler* handler_;
};
class CefV8ExceptionImpl : public CefV8Exception {
public:
CefV8ExceptionImpl(v8::Local<v8::Context> context,
v8::Local<v8::Message> message)
: line_number_(0),
start_position_(0),
end_position_(0),
start_column_(0),
end_column_(0) {
if (message.IsEmpty()) {
return;
}
v8::Isolate* isolate = context->GetIsolate();
GetCefString(isolate, message->Get(), message_);
v8::MaybeLocal<v8::String> source_line = message->GetSourceLine(context);
if (!source_line.IsEmpty()) {
GetCefString(isolate, source_line.ToLocalChecked(), source_line_);
}
if (!message->GetScriptResourceName().IsEmpty()) {
GetCefString(
isolate,
message->GetScriptResourceName()->ToString(context).ToLocalChecked(),
script_);
}
v8::Maybe<int> line_number = message->GetLineNumber(context);
if (!line_number.IsNothing()) {
line_number_ = line_number.ToChecked();
}
start_position_ = message->GetStartPosition();
end_position_ = message->GetEndPosition();
start_column_ = message->GetStartColumn(context).FromJust();
end_column_ = message->GetEndColumn(context).FromJust();
}
CefString GetMessage() override { return message_; }
CefString GetSourceLine() override { return source_line_; }
CefString GetScriptResourceName() override { return script_; }
int GetLineNumber() override { return line_number_; }
int GetStartPosition() override { return start_position_; }
int GetEndPosition() override { return end_position_; }
int GetStartColumn() override { return start_column_; }
int GetEndColumn() override { return end_column_; }
protected:
CefString message_;
CefString source_line_;
CefString script_;
int line_number_;
int start_position_;
int end_position_;
int start_column_;
int end_column_;
IMPLEMENT_REFCOUNTING(CefV8ExceptionImpl);
};
void MessageListenerCallbackImpl(v8::Handle<v8::Message> message,
v8::Handle<v8::Value> data) {
CefRefPtr<CefApp> application = CefAppManager::Get()->GetApplication();
if (!application.get()) {
return;
}
CefRefPtr<CefRenderProcessHandler> handler =
application->GetRenderProcessHandler();
if (!handler.get()) {
return;
}
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8Context> context = CefV8Context::GetCurrentContext();
v8::Local<v8::StackTrace> v8Stack = message->GetStackTrace();
CefRefPtr<CefV8StackTrace> stackTrace =
new CefV8StackTraceImpl(isolate, v8Stack);
CefRefPtr<CefV8Exception> exception = new CefV8ExceptionImpl(
static_cast<CefV8ContextImpl*>(context.get())->GetV8Context(), message);
CefRefPtr<CefBrowser> browser = context->GetBrowser();
if (browser) {
handler->OnUncaughtException(browser, context->GetFrame(), context,
exception, stackTrace);
}
}
} // namespace
// Global functions.
void CefV8IsolateCreated() {
new CefV8IsolateManager();
}
void CefV8IsolateDestroyed() {
auto* isolate_manager = CefV8IsolateManager::Get();
isolate_manager->Destroy();
}
void CefV8ReleaseContext(v8::Local<v8::Context> context) {
CefV8IsolateManager::Get()->ReleaseContext(context);
}
void CefV8SetUncaughtExceptionStackSize(int stack_size) {
CefV8IsolateManager::Get()->SetUncaughtExceptionStackSize(stack_size);
}
void CefV8SetWorkerAttributes(int worker_id, const GURL& worker_url) {
CefV8IsolateManager::Get()->SetWorkerAttributes(worker_id, worker_url);
}
bool CefRegisterExtension(const CefString& extension_name,
const CefString& javascript_code,
CefRefPtr<CefV8Handler> handler) {
// Verify that this method was called on the correct thread.
CEF_REQUIRE_RT_RETURN(false);
auto* isolate_manager = CefV8IsolateManager::Get();
V8TrackString* name = new V8TrackString(extension_name);
isolate_manager->AddGlobalTrackObject(name);
V8TrackString* code = new V8TrackString(javascript_code);
isolate_manager->AddGlobalTrackObject(code);
if (handler.get()) {
// The reference will be released when the process exits.
V8TrackObject* object = new V8TrackObject(isolate_manager->isolate());
object->SetHandler(handler);
isolate_manager->AddGlobalTrackObject(object);
}
std::unique_ptr<v8::Extension> wrapper(new ExtensionWrapper(
name->GetString(), code->GetString(), handler.get()));
blink::WebScriptController::RegisterExtension(std::move(wrapper));
return true;
}
// Helper macros
#define CEF_V8_HAS_ISOLATE() (!!CefV8IsolateManager::Get())
#define CEF_V8_REQUIRE_ISOLATE_RETURN(var) \
if (!CEF_V8_HAS_ISOLATE()) { \
NOTREACHED() << "V8 isolate is not valid"; \
return var; \
}
#define CEF_V8_CURRENTLY_ON_MLT() \
(!handle_.get() || handle_->BelongsToCurrentThread())
#define CEF_V8_REQUIRE_MLT_RETURN(var) \
CEF_V8_REQUIRE_ISOLATE_RETURN(var); \
if (!CEF_V8_CURRENTLY_ON_MLT()) { \
NOTREACHED() << "called on incorrect thread"; \
return var; \
}
#define CEF_V8_HANDLE_IS_VALID() (handle_.get() && handle_->IsValid())
#define CEF_V8_REQUIRE_VALID_HANDLE_RETURN(ret) \
CEF_V8_REQUIRE_MLT_RETURN(ret); \
if (!CEF_V8_HANDLE_IS_VALID()) { \
NOTREACHED() << "V8 handle is not valid"; \
return ret; \
}
#define CEF_V8_IS_VALID() \
(CEF_V8_HAS_ISOLATE() && CEF_V8_CURRENTLY_ON_MLT() && \
CEF_V8_HANDLE_IS_VALID())
#define CEF_V8_REQUIRE_OBJECT_RETURN(ret) \
CEF_V8_REQUIRE_VALID_HANDLE_RETURN(ret); \
if (type_ != TYPE_OBJECT) { \
NOTREACHED() << "V8 value is not an object"; \
return ret; \
}
// CefV8HandleBase
CefV8HandleBase::~CefV8HandleBase() {
DCHECK(BelongsToCurrentThread());
}
bool CefV8HandleBase::BelongsToCurrentThread() const {
return task_runner_->RunsTasksInCurrentSequence();
}
CefV8HandleBase::CefV8HandleBase(v8::Isolate* isolate,
v8::Local<v8::Context> context)
: isolate_(isolate) {
DCHECK(isolate_);
CefV8IsolateManager* manager = CefV8IsolateManager::Get();
DCHECK(manager);
DCHECK_EQ(isolate_, manager->isolate());
task_runner_ = manager->task_runner();
context_state_ = manager->GetContextState(context);
}
// CefV8Context
// static
CefRefPtr<CefV8Context> CefV8Context::GetCurrentContext() {
CefRefPtr<CefV8Context> context;
CEF_V8_REQUIRE_ISOLATE_RETURN(context);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
if (isolate->InContext()) {
v8::HandleScope handle_scope(isolate);
context = new CefV8ContextImpl(isolate, isolate->GetCurrentContext());
}
return context;
}
// static
CefRefPtr<CefV8Context> CefV8Context::GetEnteredContext() {
CefRefPtr<CefV8Context> context;
CEF_V8_REQUIRE_ISOLATE_RETURN(context);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
if (isolate->InContext()) {
v8::HandleScope handle_scope(isolate);
context =
new CefV8ContextImpl(isolate, isolate->GetEnteredOrMicrotaskContext());
}
return context;
}
// static
bool CefV8Context::InContext() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
return isolate->InContext();
}
// CefV8ContextImpl
CefV8ContextImpl::CefV8ContextImpl(v8::Isolate* isolate,
v8::Local<v8::Context> context)
: handle_(new Handle(isolate, context, context)),
microtask_queue_(blink_glue::GetMicrotaskQueue(context)) {}
CefV8ContextImpl::~CefV8ContextImpl() {
DLOG_ASSERT(0 == enter_count_);
}
CefRefPtr<CefTaskRunner> CefV8ContextImpl::GetTaskRunner() {
return new CefTaskRunnerImpl(handle_->task_runner());
}
bool CefV8ContextImpl::IsValid() {
return CEF_V8_IS_VALID();
}
CefRefPtr<CefBrowser> CefV8ContextImpl::GetBrowser() {
CefRefPtr<CefBrowser> browser;
CEF_V8_REQUIRE_VALID_HANDLE_RETURN(browser);
blink::WebLocalFrame* webframe = GetWebFrame();
if (webframe) {
browser = CefBrowserImpl::GetBrowserForMainFrame(webframe->Top());
}
return browser;
}
CefRefPtr<CefFrame> CefV8ContextImpl::GetFrame() {
CefRefPtr<CefFrame> frame;
CEF_V8_REQUIRE_VALID_HANDLE_RETURN(frame);
blink::WebLocalFrame* webframe = GetWebFrame();
if (webframe) {
CefRefPtr<CefBrowserImpl> browser =
CefBrowserImpl::GetBrowserForMainFrame(webframe->Top());
if (browser) {
frame = browser->GetFrame(render_frame_util::GetIdentifier(webframe));
}
}
return frame;
}
CefRefPtr<CefV8Value> CefV8ContextImpl::GetGlobal() {
CEF_V8_REQUIRE_VALID_HANDLE_RETURN(nullptr);
if (blink_glue::IsScriptForbidden()) {
return nullptr;
}
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = GetV8Context();
v8::Context::Scope context_scope(context);
return new CefV8ValueImpl(isolate, context, context->Global());
}
bool CefV8ContextImpl::Enter() {
CEF_V8_REQUIRE_VALID_HANDLE_RETURN(false);
if (blink_glue::IsScriptForbidden()) {
return false;
}
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
if (!microtasks_scope_) {
// Increment the MicrotasksScope recursion level.
microtasks_scope_.reset(new v8::MicrotasksScope(
isolate, microtask_queue_, v8::MicrotasksScope::kRunMicrotasks));
}
++enter_count_;
handle_->GetNewV8Handle()->Enter();
return true;
}
bool CefV8ContextImpl::Exit() {
CEF_V8_REQUIRE_VALID_HANDLE_RETURN(false);
if (blink_glue::IsScriptForbidden()) {
return false;
}
if (enter_count_ <= 0) {
LOG(ERROR) << "Call to CefV8Context::Exit() without matching call to "
"CefV8Context::Enter()";
return false;
}
v8::HandleScope handle_scope(handle_->isolate());
handle_->GetNewV8Handle()->Exit();
if (--enter_count_ == 0) {
// Decrement the MicrotasksScope recursion level.
microtasks_scope_.reset(nullptr);
}
return true;
}
bool CefV8ContextImpl::IsSame(CefRefPtr<CefV8Context> that) {
CEF_V8_REQUIRE_VALID_HANDLE_RETURN(false);
CefV8ContextImpl* impl = static_cast<CefV8ContextImpl*>(that.get());
if (!impl || !impl->IsValid()) {
return false;
}
return (handle_->GetPersistentV8Handle() ==
impl->handle_->GetPersistentV8Handle());
}
bool CefV8ContextImpl::Eval(const CefString& code,
const CefString& script_url,
int start_line,
CefRefPtr<CefV8Value>& retval,
CefRefPtr<CefV8Exception>& exception) {
retval = nullptr;
exception = nullptr;
CEF_V8_REQUIRE_VALID_HANDLE_RETURN(false);
if (blink_glue::IsScriptForbidden()) {
return false;
}
if (code.empty()) {
NOTREACHED() << "invalid input parameter";
return false;
}
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = GetV8Context();
v8::Context::Scope context_scope(context);
const blink::WebString& source =
blink::WebString::FromUTF16(code.ToString16());
const blink::WebString& source_url =
blink::WebString::FromUTF16(script_url.ToString16());
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
v8::Local<v8::Value> func_rv = blink_glue::ExecuteV8ScriptAndReturnValue(
source, source_url, start_line, context, try_catch);
if (try_catch.HasCaught()) {
exception = new CefV8ExceptionImpl(context, try_catch.Message());
return false;
} else if (!func_rv.IsEmpty()) {
retval = new CefV8ValueImpl(isolate, context, func_rv);
return true;
}
NOTREACHED();
return false;
}
v8::Local<v8::Context> CefV8ContextImpl::GetV8Context() {
return handle_->GetNewV8Handle();
}
blink::WebLocalFrame* CefV8ContextImpl::GetWebFrame() {
CEF_REQUIRE_RT();
if (blink_glue::IsScriptForbidden()) {
return nullptr;
}
v8::HandleScope handle_scope(handle_->isolate());
v8::Local<v8::Context> context = GetV8Context();
v8::Context::Scope context_scope(context);
return blink::WebLocalFrame::FrameForContext(context);
}
// CefV8ValueImpl::Handle
CefV8ValueImpl::Handle::Handle(v8::Isolate* isolate,
v8::Local<v8::Context> context,
handleType v,
CefTrackNode* tracker)
: CefV8HandleBase(isolate, context),
handle_(isolate, v),
tracker_(tracker),
should_persist_(false),
is_set_weak_(false) {}
CefV8ValueImpl::Handle::~Handle() {
DCHECK(BelongsToCurrentThread());
if (tracker_) {
if (is_set_weak_) {
if (context_state_.get()) {
// If the associated context is still valid then delete |tracker_|.
// Otherwise, |tracker_| will already have been deleted.
if (context_state_->IsValid()) {
context_state_->DeleteTrackObject(tracker_);
}
} else {
CefV8IsolateManager::Get()->DeleteGlobalTrackObject(tracker_);
}
} else {
delete tracker_;
}
}
if (is_set_weak_) {
isolate_->AdjustAmountOfExternalAllocatedMemory(
-static_cast<int>(sizeof(Handle)));
} else {
// SetWeak was not called so reset now.
handle_.Reset();
}
}
CefV8ValueImpl::Handle::handleType CefV8ValueImpl::Handle::GetNewV8Handle(
bool should_persist) {
DCHECK(IsValid());
if (should_persist && !should_persist_) {
should_persist_ = true;
}
return handleType::New(isolate(), handle_);
}
CefV8ValueImpl::Handle::persistentType&
CefV8ValueImpl::Handle::GetPersistentV8Handle() {
return handle_;
}
void CefV8ValueImpl::Handle::SetWeakIfNecessary() {
if (!BelongsToCurrentThread()) {
task_runner()->PostTask(
FROM_HERE,
base::BindOnce(&CefV8ValueImpl::Handle::SetWeakIfNecessary, this));
return;
}
// Persist the handle (call SetWeak) if:
// A. The handle has been passed into a V8 function or used as a return value
// from a V8 callback, and
// B. The associated context, if any, is still valid.
if (should_persist_ && (!context_state_.get() || context_state_->IsValid())) {
is_set_weak_ = true;
if (tracker_) {
if (context_state_.get()) {
// |tracker_| will be deleted when:
// A. The associated context is released, or
// B. SecondWeakCallback is called for the weak handle.
DCHECK(context_state_->IsValid());
context_state_->AddTrackObject(tracker_);
} else {
// |tracker_| will be deleted when:
// A. The process shuts down, or
// B. SecondWeakCallback is called for the weak handle.
CefV8IsolateManager::Get()->AddGlobalTrackObject(tracker_);
}
}
isolate_->AdjustAmountOfExternalAllocatedMemory(
static_cast<int>(sizeof(Handle)));
// The added reference will be released in SecondWeakCallback.
AddRef();
handle_.SetWeak(this, FirstWeakCallback, v8::WeakCallbackType::kParameter);
}
}
// static
void CefV8ValueImpl::Handle::FirstWeakCallback(
const v8::WeakCallbackInfo<Handle>& data) {
Handle* wrapper = data.GetParameter();
wrapper->handle_.Reset();
data.SetSecondPassCallback(SecondWeakCallback);
}
// static
void CefV8ValueImpl::Handle::SecondWeakCallback(
const v8::WeakCallbackInfo<Handle>& data) {
Handle* wrapper = data.GetParameter();
wrapper->Release();
}
// CefV8Value
// static
CefRefPtr<CefV8Value> CefV8Value::CreateUndefined() {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitUndefined();
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateNull() {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitNull();
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateBool(bool value) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitBool(value);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateInt(int32 value) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitInt(value);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateUInt(uint32 value) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitUInt(value);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateDouble(double value) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitDouble(value);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateDate(CefBaseTime value) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitDate(value);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateString(const CefString& value) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
CefString str(value);
impl->InitString(str);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateObject(
CefRefPtr<CefV8Accessor> accessor,
CefRefPtr<CefV8Interceptor> interceptor) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
// Create the new V8 object. If an interceptor is passed, create object from
// template and set property handlers.
v8::Local<v8::Object> obj;
if (interceptor.get()) {
v8::Local<v8::ObjectTemplate> tmpl = v8::ObjectTemplate::New(isolate);
tmpl->SetHandler(v8::NamedPropertyHandlerConfiguration(
InterceptorGetterCallbackImpl<v8::Local<v8::Name>>,
InterceptorSetterCallbackImpl<v8::Local<v8::Name>>, nullptr, nullptr,
nullptr, v8::Local<v8::Value>(),
v8::PropertyHandlerFlags::kOnlyInterceptStrings));
tmpl->SetIndexedPropertyHandler(InterceptorGetterCallbackImpl<uint32_t>,
InterceptorSetterCallbackImpl<uint32_t>);
v8::MaybeLocal<v8::Object> maybe_object = tmpl->NewInstance(context);
if (!maybe_object.ToLocal<v8::Object>(&obj)) {
NOTREACHED() << "Failed to create V8 Object with interceptor";
return nullptr;
}
} else {
obj = v8::Object::New(isolate);
}
// Create a tracker object that will cause the user data and/or accessor
// and/or interceptor reference to be released when the V8 object is
// destroyed.
V8TrackObject* tracker = new V8TrackObject(isolate);
tracker->SetAccessor(accessor);
tracker->SetInterceptor(interceptor);
// Attach the tracker object.
tracker->AttachTo(context, obj);
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitObject(obj, tracker);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateArray(int length) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
// Create a tracker object that will cause the user data reference to be
// released when the V8 object is destroyed.
V8TrackObject* tracker = new V8TrackObject(isolate);
// Create the new V8 array.
v8::Local<v8::Array> arr = v8::Array::New(isolate, length);
// Attach the tracker object.
tracker->AttachTo(context, arr);
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitObject(arr, tracker);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateArrayBuffer(
void* buffer,
size_t length,
CefRefPtr<CefV8ArrayBufferReleaseCallback> release_callback) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
// Create a tracker object that will cause the user data reference to be
// released when the V8 object is destroyed.
V8TrackArrayBuffer* tracker =
new V8TrackArrayBuffer(isolate, release_callback);
if (release_callback) {
release_callback->AddRef();
}
auto deleter = [](void* data, size_t length, void* deleter_data) {
auto* release_callback =
reinterpret_cast<CefV8ArrayBufferReleaseCallback*>(deleter_data);
if (release_callback) {
release_callback->ReleaseBuffer(data);
release_callback->Release();
}
};
std::unique_ptr<v8::BackingStore> backing = v8::ArrayBuffer::NewBackingStore(
buffer, length, deleter, release_callback.get());
v8::Local<v8::ArrayBuffer> ab =
v8::ArrayBuffer::New(isolate, std::move(backing));
// Attach the tracker object.
tracker->AttachTo(context, ab);
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitObject(ab, tracker);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreateFunction(
const CefString& name,
CefRefPtr<CefV8Handler> handler) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
if (!handler.get()) {
NOTREACHED() << "invalid parameter";
return nullptr;
}
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
v8::Local<v8::External> function_data =
V8FunctionData::Create(isolate, name, handler);
// Create a new V8 function template.
v8::Local<v8::FunctionTemplate> tmpl =
v8::FunctionTemplate::New(isolate, FunctionCallbackImpl, function_data);
// Retrieve the function object and set the name.
v8::MaybeLocal<v8::Function> maybe_func = tmpl->GetFunction(context);
v8::Local<v8::Function> func;
if (!maybe_func.ToLocal(&func)) {
NOTREACHED() << "failed to create V8 function";
return nullptr;
}
func->SetName(GetV8String(isolate, name));
// Create a tracker object that will cause the user data and/or handler
// reference to be released when the V8 object is destroyed.
V8TrackObject* tracker = new V8TrackObject(isolate);
tracker->SetHandler(handler);
// Attach the tracker object.
tracker->AttachTo(context, func);
// Create the CefV8ValueImpl and provide a tracker object that will cause
// the handler reference to be released when the V8 object is destroyed.
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitObject(func, tracker);
return impl.get();
}
// static
CefRefPtr<CefV8Value> CefV8Value::CreatePromise() {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
v8::Local<v8::Promise::Resolver> promise_resolver =
v8::Promise::Resolver::New(context).ToLocalChecked();
// Create a tracker object that will cause the user data reference to be
// released when the V8 object is destroyed.
V8TrackObject* tracker = new V8TrackObject(isolate);
// Attach the tracker object.
tracker->AttachTo(context, promise_resolver);
CefRefPtr<CefV8ValueImpl> impl = new CefV8ValueImpl(isolate);
impl->InitObject(promise_resolver, tracker);
return impl.get();
}
// CefV8ValueImpl
CefV8ValueImpl::CefV8ValueImpl(v8::Isolate* isolate)
: isolate_(isolate), type_(TYPE_INVALID), rethrow_exceptions_(false) {
DCHECK(isolate_);
}
CefV8ValueImpl::CefV8ValueImpl(v8::Isolate* isolate,
v8::Local<v8::Context> context,
v8::Local<v8::Value> value)
: isolate_(isolate), type_(TYPE_INVALID), rethrow_exceptions_(false) {
DCHECK(isolate_);
InitFromV8Value(context, value);
}
CefV8ValueImpl::~CefV8ValueImpl() {
if (type_ == TYPE_STRING) {
cef_string_clear(&string_value_);
}
if (handle_.get()) {
handle_->SetWeakIfNecessary();
}
}
void CefV8ValueImpl::InitFromV8Value(v8::Local<v8::Context> context,
v8::Local<v8::Value> value) {
if (value->IsUndefined()) {
InitUndefined();
} else if (value->IsNull()) {
InitNull();
} else if (value->IsTrue()) {
InitBool(true);
} else if (value->IsFalse()) {
InitBool(false);
} else if (value->IsBoolean()) {
InitBool(value->ToBoolean(context->GetIsolate())->Value());
} else if (value->IsInt32()) {
InitInt(value->ToInt32(context).ToLocalChecked()->Value());
} else if (value->IsUint32()) {
InitUInt(value->ToUint32(context).ToLocalChecked()->Value());
} else if (value->IsNumber()) {
InitDouble(value->ToNumber(context).ToLocalChecked()->Value());
} else if (value->IsDate()) {
// Convert from milliseconds to seconds.
InitDate(base::Time::FromJsTime(
value->ToNumber(context).ToLocalChecked()->Value()));
} else if (value->IsString()) {
CefString rv;
GetCefString(context->GetIsolate(),
value->ToString(context).ToLocalChecked(), rv);
InitString(rv);
} else if (value->IsObject()) {
InitObject(value, nullptr);
}
}
void CefV8ValueImpl::InitUndefined() {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_UNDEFINED;
}
void CefV8ValueImpl::InitNull() {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_NULL;
}
void CefV8ValueImpl::InitBool(bool value) {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_BOOL;
bool_value_ = value;
}
void CefV8ValueImpl::InitInt(int32 value) {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_INT;
int_value_ = value;
}
void CefV8ValueImpl::InitUInt(uint32 value) {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_UINT;
uint_value_ = value;
}
void CefV8ValueImpl::InitDouble(double value) {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_DOUBLE;
double_value_ = value;
}
void CefV8ValueImpl::InitDate(CefBaseTime value) {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_DATE;
date_value_ = value;
}
void CefV8ValueImpl::InitString(CefString& value) {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_STRING;
// Take ownership of the underling string value.
const cef_string_t* str = value.GetStruct();
if (str) {
string_value_ = *str;
cef_string_t* writable_struct = value.GetWritableStruct();
writable_struct->str = nullptr;
writable_struct->length = 0;
} else {
string_value_.str = nullptr;
string_value_.length = 0;
}
}
void CefV8ValueImpl::InitObject(v8::Local<v8::Value> value,
CefTrackNode* tracker) {
DCHECK_EQ(type_, TYPE_INVALID);
type_ = TYPE_OBJECT;
handle_ = new Handle(isolate_, v8::Local<v8::Context>(), value, tracker);
}
v8::Local<v8::Value> CefV8ValueImpl::GetV8Value(bool should_persist) {
switch (type_) {
case TYPE_UNDEFINED:
return v8::Undefined(isolate_);
case TYPE_NULL:
return v8::Null(isolate_);
case TYPE_BOOL:
return v8::Boolean::New(isolate_, bool_value_);
case TYPE_INT:
return v8::Int32::New(isolate_, int_value_);
case TYPE_UINT:
return v8::Uint32::NewFromUnsigned(isolate_, uint_value_);
case TYPE_DOUBLE:
return v8::Number::New(isolate_, double_value_);
case TYPE_DATE:
// Convert from seconds to milliseconds.
return v8::Date::New(isolate_->GetCurrentContext(),
static_cast<base::Time>(CefBaseTime(date_value_))
.ToJsTimeIgnoringNull())
.ToLocalChecked();
case TYPE_STRING:
return GetV8String(isolate_, CefString(&string_value_));
case TYPE_OBJECT:
return handle_->GetNewV8Handle(should_persist);
default:
break;
}
NOTREACHED() << "Invalid type for CefV8ValueImpl";
return v8::Local<v8::Value>();
}
bool CefV8ValueImpl::IsValid() {
if (!CEF_V8_HAS_ISOLATE() || type_ == TYPE_INVALID ||
(type_ == TYPE_OBJECT &&
(!handle_->BelongsToCurrentThread() || !handle_->IsValid()))) {
return false;
}
return true;
}
bool CefV8ValueImpl::IsUndefined() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_UNDEFINED);
}
bool CefV8ValueImpl::IsNull() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_NULL);
}
bool CefV8ValueImpl::IsBool() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_BOOL);
}
bool CefV8ValueImpl::IsInt() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_INT || type_ == TYPE_UINT);
}
bool CefV8ValueImpl::IsUInt() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_INT || type_ == TYPE_UINT);
}
bool CefV8ValueImpl::IsDouble() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_INT || type_ == TYPE_UINT || type_ == TYPE_DOUBLE);
}
bool CefV8ValueImpl::IsDate() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_DATE);
}
bool CefV8ValueImpl::IsString() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_STRING);
}
bool CefV8ValueImpl::IsObject() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
return (type_ == TYPE_OBJECT);
}
bool CefV8ValueImpl::IsArray() {
CEF_V8_REQUIRE_MLT_RETURN(false);
if (type_ == TYPE_OBJECT) {
v8::HandleScope handle_scope(handle_->isolate());
return handle_->GetNewV8Handle(false)->IsArray();
} else {
return false;
}
}
bool CefV8ValueImpl::IsArrayBuffer() {
CEF_V8_REQUIRE_MLT_RETURN(false);
if (type_ == TYPE_OBJECT) {
v8::HandleScope handle_scope(handle_->isolate());
return handle_->GetNewV8Handle(false)->IsArrayBuffer();
} else {
return false;
}
}
bool CefV8ValueImpl::IsFunction() {
CEF_V8_REQUIRE_MLT_RETURN(false);
if (type_ == TYPE_OBJECT) {
v8::HandleScope handle_scope(handle_->isolate());
return handle_->GetNewV8Handle(false)->IsFunction();
} else {
return false;
}
}
bool CefV8ValueImpl::IsPromise() {
CEF_V8_REQUIRE_MLT_RETURN(false);
if (type_ == TYPE_OBJECT) {
v8::HandleScope handle_scope(handle_->isolate());
return handle_->GetNewV8Handle(false)->IsPromise();
} else {
return false;
}
}
bool CefV8ValueImpl::IsSame(CefRefPtr<CefV8Value> that) {
CEF_V8_REQUIRE_MLT_RETURN(false);
CefV8ValueImpl* thatValue = static_cast<CefV8ValueImpl*>(that.get());
if (!thatValue || !thatValue->IsValid() || type_ != thatValue->type_) {
return false;
}
switch (type_) {
case TYPE_UNDEFINED:
case TYPE_NULL:
return true;
case TYPE_BOOL:
return (bool_value_ == thatValue->bool_value_);
case TYPE_INT:
return (int_value_ == thatValue->int_value_);
case TYPE_UINT:
return (uint_value_ == thatValue->uint_value_);
case TYPE_DOUBLE:
return (double_value_ == thatValue->double_value_);
case TYPE_DATE:
return (date_value_.val == thatValue->date_value_.val);
case TYPE_STRING:
return (CefString(&string_value_) ==
CefString(&thatValue->string_value_));
case TYPE_OBJECT: {
return (handle_->GetPersistentV8Handle() ==
thatValue->handle_->GetPersistentV8Handle());
}
default:
break;
}
return false;
}
bool CefV8ValueImpl::GetBoolValue() {
CEF_V8_REQUIRE_ISOLATE_RETURN(false);
if (type_ == TYPE_BOOL) {
return bool_value_;
}
return false;
}
int32 CefV8ValueImpl::GetIntValue() {
CEF_V8_REQUIRE_ISOLATE_RETURN(0);
if (type_ == TYPE_INT || type_ == TYPE_UINT) {
return int_value_;
}
return 0;
}
uint32 CefV8ValueImpl::GetUIntValue() {
CEF_V8_REQUIRE_ISOLATE_RETURN(0);
if (type_ == TYPE_INT || type_ == TYPE_UINT) {
return uint_value_;
}
return 0;
}
double CefV8ValueImpl::GetDoubleValue() {
CEF_V8_REQUIRE_ISOLATE_RETURN(0.);
if (type_ == TYPE_DOUBLE) {
return double_value_;
} else if (type_ == TYPE_INT) {
return int_value_;
} else if (type_ == TYPE_UINT) {
return uint_value_;
}
return 0.;
}
CefBaseTime CefV8ValueImpl::GetDateValue() {
CEF_V8_REQUIRE_ISOLATE_RETURN(CefBaseTime());
if (type_ == TYPE_DATE) {
return date_value_;
}
return CefBaseTime();
}
CefString CefV8ValueImpl::GetStringValue() {
CefString rv;
CEF_V8_REQUIRE_ISOLATE_RETURN(rv);
if (type_ == TYPE_STRING) {
rv = CefString(&string_value_);
}
return rv;
}
bool CefV8ValueImpl::IsUserCreated() {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
return (tracker != nullptr);
}
bool CefV8ValueImpl::HasException() {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
return (last_exception_.get() != nullptr);
}
CefRefPtr<CefV8Exception> CefV8ValueImpl::GetException() {
CEF_V8_REQUIRE_OBJECT_RETURN(nullptr);
return last_exception_;
}
bool CefV8ValueImpl::ClearException() {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
last_exception_ = nullptr;
return true;
}
bool CefV8ValueImpl::WillRethrowExceptions() {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
return rethrow_exceptions_;
}
bool CefV8ValueImpl::SetRethrowExceptions(bool rethrow) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
rethrow_exceptions_ = rethrow;
return true;
}
bool CefV8ValueImpl::HasValue(const CefString& key) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
return obj->Has(context, GetV8String(isolate, key)).FromJust();
}
bool CefV8ValueImpl::HasValue(int index) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
if (index < 0) {
NOTREACHED() << "invalid input parameter";
return false;
}
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
return obj->Has(context, index).FromJust();
}
bool CefV8ValueImpl::DeleteValue(const CefString& key) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
v8::Maybe<bool> del = obj->Delete(context, GetV8String(isolate, key));
return (!HasCaught(context, try_catch) && del.FromJust());
}
bool CefV8ValueImpl::DeleteValue(int index) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
if (index < 0) {
NOTREACHED() << "invalid input parameter";
return false;
}
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
v8::Maybe<bool> del = obj->Delete(context, index);
return (!HasCaught(context, try_catch) && del.FromJust());
}
CefRefPtr<CefV8Value> CefV8ValueImpl::GetValue(const CefString& key) {
CEF_V8_REQUIRE_OBJECT_RETURN(nullptr);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
v8::MaybeLocal<v8::Value> ret_value =
obj->Get(context, GetV8String(isolate, key));
if (!HasCaught(context, try_catch) && !ret_value.IsEmpty()) {
return new CefV8ValueImpl(isolate, context, ret_value.ToLocalChecked());
}
return nullptr;
}
CefRefPtr<CefV8Value> CefV8ValueImpl::GetValue(int index) {
CEF_V8_REQUIRE_OBJECT_RETURN(nullptr);
if (index < 0) {
NOTREACHED() << "invalid input parameter";
return nullptr;
}
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
v8::MaybeLocal<v8::Value> ret_value =
obj->Get(context, v8::Number::New(isolate, index));
if (!HasCaught(context, try_catch) && !ret_value.IsEmpty()) {
return new CefV8ValueImpl(isolate, context, ret_value.ToLocalChecked());
}
return nullptr;
}
bool CefV8ValueImpl::SetValue(const CefString& key,
CefRefPtr<CefV8Value> value,
PropertyAttribute attribute) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
CefV8ValueImpl* impl = static_cast<CefV8ValueImpl*>(value.get());
if (impl && impl->IsValid()) {
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> v8value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = v8value->ToObject(context).ToLocalChecked();
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
// TODO(cef): This usage may not exactly match the previous implementation.
// Set will trigger interceptors and/or accessors whereas DefineOwnProperty
// will not. It might be better to split this functionality into separate
// methods.
if (attribute == V8_PROPERTY_ATTRIBUTE_NONE) {
v8::Maybe<bool> set =
obj->Set(context, GetV8String(isolate, key), impl->GetV8Value(true));
return (!HasCaught(context, try_catch) && set.FromJust());
} else {
v8::Maybe<bool> set = obj->DefineOwnProperty(
context, GetV8String(isolate, key), impl->GetV8Value(true),
static_cast<v8::PropertyAttribute>(attribute));
return (!HasCaught(context, try_catch) && set.FromJust());
}
} else {
NOTREACHED() << "invalid input parameter";
return false;
}
}
bool CefV8ValueImpl::SetValue(int index, CefRefPtr<CefV8Value> value) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
if (index < 0) {
NOTREACHED() << "invalid input parameter";
return false;
}
CefV8ValueImpl* impl = static_cast<CefV8ValueImpl*>(value.get());
if (impl && impl->IsValid()) {
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> v8value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = v8value->ToObject(context).ToLocalChecked();
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
v8::Maybe<bool> set = obj->Set(context, index, impl->GetV8Value(true));
return (!HasCaught(context, try_catch) && set.FromJust());
} else {
NOTREACHED() << "invalid input parameter";
return false;
}
}
bool CefV8ValueImpl::SetValue(const CefString& key,
AccessControl settings,
PropertyAttribute attribute) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
CefRefPtr<CefV8Accessor> accessorPtr;
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
accessorPtr = tracker->GetAccessor();
}
// Verify that an accessor exists for this object.
if (!accessorPtr.get()) {
return false;
}
v8::AccessorNameGetterCallback getter = AccessorNameGetterCallbackImpl;
v8::AccessorNameSetterCallback setter =
(attribute & V8_PROPERTY_ATTRIBUTE_READONLY)
? nullptr
: AccessorNameSetterCallbackImpl;
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
v8::Maybe<bool> set =
obj->SetAccessor(context, GetV8String(isolate, key), getter, setter, obj,
static_cast<v8::AccessControl>(settings),
static_cast<v8::PropertyAttribute>(attribute));
return (!HasCaught(context, try_catch) && set.FromJust());
}
bool CefV8ValueImpl::GetKeys(std::vector<CefString>& keys) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
v8::Local<v8::Array> arr_keys =
obj->GetPropertyNames(context).ToLocalChecked();
uint32_t len = arr_keys->Length();
for (uint32_t i = 0; i < len; ++i) {
v8::Local<v8::Value> arr_value =
arr_keys->Get(context, v8::Integer::New(isolate, i)).ToLocalChecked();
CefString str;
GetCefString(isolate, arr_value->ToString(context).ToLocalChecked(), str);
keys.push_back(str);
}
return true;
}
bool CefV8ValueImpl::SetUserData(CefRefPtr<CefBaseRefCounted> user_data) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
tracker->SetUserData(user_data);
return true;
}
return false;
}
CefRefPtr<CefBaseRefCounted> CefV8ValueImpl::GetUserData() {
CEF_V8_REQUIRE_OBJECT_RETURN(nullptr);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
return tracker->GetUserData();
}
return nullptr;
}
int CefV8ValueImpl::GetExternallyAllocatedMemory() {
CEF_V8_REQUIRE_OBJECT_RETURN(0);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return 0;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
return tracker->GetExternallyAllocatedMemory();
}
return 0;
}
int CefV8ValueImpl::AdjustExternallyAllocatedMemory(int change_in_bytes) {
CEF_V8_REQUIRE_OBJECT_RETURN(0);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return 0;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
return tracker->AdjustExternallyAllocatedMemory(change_in_bytes);
}
return 0;
}
int CefV8ValueImpl::GetArrayLength() {
CEF_V8_REQUIRE_OBJECT_RETURN(0);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return 0;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
if (!value->IsArray()) {
NOTREACHED() << "V8 value is not an array";
return 0;
}
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
v8::Local<v8::Array> arr = v8::Local<v8::Array>::Cast(obj);
return arr->Length();
}
CefRefPtr<CefV8ArrayBufferReleaseCallback>
CefV8ValueImpl::GetArrayBufferReleaseCallback() {
CEF_V8_REQUIRE_OBJECT_RETURN(nullptr);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
if (!value->IsArrayBuffer()) {
NOTREACHED() << "V8 value is not an array buffer";
return nullptr;
}
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
V8TrackArrayBuffer* tracker = V8TrackArrayBuffer::Unwrap(context, obj);
if (tracker) {
return tracker->GetReleaseCallback();
}
return nullptr;
}
bool CefV8ValueImpl::NeuterArrayBuffer() {
CEF_V8_REQUIRE_OBJECT_RETURN(0);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return false;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
if (!value->IsArrayBuffer()) {
NOTREACHED() << "V8 value is not an array buffer";
return false;
}
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
v8::Local<v8::ArrayBuffer> arr = v8::Local<v8::ArrayBuffer>::Cast(obj);
if (!arr->IsDetachable()) {
return false;
}
arr->Detach();
return true;
}
CefString CefV8ValueImpl::GetFunctionName() {
CefString rv;
CEF_V8_REQUIRE_OBJECT_RETURN(rv);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return rv;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
if (!value->IsFunction()) {
NOTREACHED() << "V8 value is not a function";
return rv;
}
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(obj);
GetCefString(handle_->isolate(),
v8::Handle<v8::String>::Cast(func->GetName()), rv);
return rv;
}
CefRefPtr<CefV8Handler> CefV8ValueImpl::GetFunctionHandler() {
CEF_V8_REQUIRE_OBJECT_RETURN(nullptr);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) {
NOTREACHED() << "not currently in a V8 context";
return nullptr;
}
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
if (!value->IsFunction()) {
NOTREACHED() << "V8 value is not a function";
return nullptr;
}
v8::Local<v8::Object> obj = value->ToObject(context).ToLocalChecked();
V8TrackObject* tracker = V8TrackObject::Unwrap(context, obj);
if (tracker) {
return tracker->GetHandler();
}
return nullptr;
}
CefRefPtr<CefV8Value> CefV8ValueImpl::ExecuteFunction(
CefRefPtr<CefV8Value> object,
const CefV8ValueList& arguments) {
// An empty context value defaults to the current context.
CefRefPtr<CefV8Context> context;
return ExecuteFunctionWithContext(context, object, arguments);
}
CefRefPtr<CefV8Value> CefV8ValueImpl::ExecuteFunctionWithContext(
CefRefPtr<CefV8Context> context,
CefRefPtr<CefV8Value> object,
const CefV8ValueList& arguments) {
CEF_V8_REQUIRE_OBJECT_RETURN(nullptr);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
if (!value->IsFunction()) {
NOTREACHED() << "V8 value is not a function";
return nullptr;
}
if (context.get() && !context->IsValid()) {
NOTREACHED() << "invalid V8 context parameter";
return nullptr;
}
if (object.get() && (!object->IsValid() || !object->IsObject())) {
NOTREACHED() << "invalid V8 object parameter";
return nullptr;
}
int argc = arguments.size();
if (argc > 0) {
for (int i = 0; i < argc; ++i) {
if (!arguments[i].get() || !arguments[i]->IsValid()) {
NOTREACHED() << "invalid V8 arguments parameter";
return nullptr;
}
}
}
v8::Local<v8::Context> context_local;
if (context.get()) {
CefV8ContextImpl* context_impl =
static_cast<CefV8ContextImpl*>(context.get());
context_local = context_impl->GetV8Context();
} else {
context_local = isolate->GetCurrentContext();
}
v8::Context::Scope context_scope(context_local);
v8::Local<v8::Object> obj = value->ToObject(context_local).ToLocalChecked();
v8::Local<v8::Function> func = v8::Local<v8::Function>::Cast(obj);
v8::Local<v8::Object> recv;
// Default to the global object if no object was provided.
if (object.get()) {
CefV8ValueImpl* recv_impl = static_cast<CefV8ValueImpl*>(object.get());
recv = v8::Local<v8::Object>::Cast(recv_impl->GetV8Value(true));
} else {
recv = context_local->Global();
}
v8::Local<v8::Value>* argv = nullptr;
if (argc > 0) {
argv = new v8::Local<v8::Value>[argc];
for (int i = 0; i < argc; ++i) {
argv[i] =
static_cast<CefV8ValueImpl*>(arguments[i].get())->GetV8Value(true);
}
}
CefRefPtr<CefV8Value> retval;
{
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
v8::MaybeLocal<v8::Value> func_rv = blink_glue::CallV8Function(
context_local, func, recv, argc, argv, handle_->isolate());
if (!HasCaught(context_local, try_catch) && !func_rv.IsEmpty()) {
retval =
new CefV8ValueImpl(isolate, context_local, func_rv.ToLocalChecked());
}
}
if (argv) {
delete[] argv;
}
return retval;
}
bool CefV8ValueImpl::ResolvePromise(CefRefPtr<CefV8Value> arg) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
if (!value->IsPromise()) {
NOTREACHED() << "V8 value is not a Promise";
return false;
}
if (arg.get() && !arg->IsValid()) {
NOTREACHED() << "invalid V8 arg parameter";
return false;
}
v8::Local<v8::Context> context_local = isolate->GetCurrentContext();
v8::Context::Scope context_scope(context_local);
v8::Local<v8::Object> obj = value->ToObject(context_local).ToLocalChecked();
v8::Local<v8::Promise::Resolver> promise =
v8::Local<v8::Promise::Resolver>::Cast(obj);
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
if (arg.get()) {
promise
->Resolve(context_local,
static_cast<CefV8ValueImpl*>(arg.get())->GetV8Value(true))
.ToChecked();
} else {
promise->Resolve(context_local, v8::Undefined(isolate)).ToChecked();
}
return !HasCaught(context_local, try_catch);
}
bool CefV8ValueImpl::RejectPromise(const CefString& errorMsg) {
CEF_V8_REQUIRE_OBJECT_RETURN(false);
v8::Isolate* isolate = handle_->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Value> value = handle_->GetNewV8Handle(false);
if (!value->IsPromise()) {
NOTREACHED() << "V8 value is not a Promise";
return false;
}
v8::Local<v8::Context> context_local = isolate->GetCurrentContext();
v8::Context::Scope context_scope(context_local);
v8::Local<v8::Object> obj = value->ToObject(context_local).ToLocalChecked();
v8::Local<v8::Promise::Resolver> promise =
v8::Local<v8::Promise::Resolver>::Cast(obj);
v8::TryCatch try_catch(isolate);
try_catch.SetVerbose(true);
promise
->Reject(context_local,
v8::Exception::Error(GetV8String(isolate, errorMsg)))
.ToChecked();
return !HasCaught(context_local, try_catch);
}
bool CefV8ValueImpl::HasCaught(v8::Local<v8::Context> context,
v8::TryCatch& try_catch) {
if (try_catch.HasCaught()) {
last_exception_ = new CefV8ExceptionImpl(context, try_catch.Message());
if (rethrow_exceptions_) {
try_catch.ReThrow();
}
return true;
} else {
if (last_exception_.get()) {
last_exception_ = nullptr;
}
return false;
}
}
// CefV8StackTrace
// static
CefRefPtr<CefV8StackTrace> CefV8StackTrace::GetCurrent(int frame_limit) {
CEF_V8_REQUIRE_ISOLATE_RETURN(nullptr);
v8::Isolate* isolate = CefV8IsolateManager::Get()->isolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::StackTrace> stackTrace = v8::StackTrace::CurrentStackTrace(
isolate, frame_limit, v8::StackTrace::kDetailed);
if (stackTrace.IsEmpty()) {
return nullptr;
}
return new CefV8StackTraceImpl(isolate, stackTrace);
}
// CefV8StackTraceImpl
CefV8StackTraceImpl::CefV8StackTraceImpl(v8::Isolate* isolate,
v8::Local<v8::StackTrace> handle) {
if (!handle.IsEmpty()) {
int frame_count = handle->GetFrameCount();
if (frame_count > 0) {
frames_.reserve(frame_count);
for (int i = 0; i < frame_count; ++i) {
frames_.push_back(
new CefV8StackFrameImpl(isolate, handle->GetFrame(isolate, i)));
}
}
}
}
CefV8StackTraceImpl::~CefV8StackTraceImpl() {}
bool CefV8StackTraceImpl::IsValid() {
return true;
}
int CefV8StackTraceImpl::GetFrameCount() {
return frames_.size();
}
CefRefPtr<CefV8StackFrame> CefV8StackTraceImpl::GetFrame(int index) {
if (index < 0 || index >= static_cast<int>(frames_.size())) {
return nullptr;
}
return frames_[index];
}
// CefV8StackFrameImpl
CefV8StackFrameImpl::CefV8StackFrameImpl(v8::Isolate* isolate,
v8::Local<v8::StackFrame> handle)
: line_number_(0), column_(0), is_eval_(false), is_constructor_(false) {
if (handle.IsEmpty()) {
return;
}
GetCefString(isolate, handle->GetScriptName(), script_name_);
GetCefString(isolate, handle->GetScriptNameOrSourceURL(),
script_name_or_source_url_);
GetCefString(isolate, handle->GetFunctionName(), function_name_);
line_number_ = handle->GetLineNumber();
column_ = handle->GetColumn();
is_eval_ = handle->IsEval();
is_constructor_ = handle->IsConstructor();
}
CefV8StackFrameImpl::~CefV8StackFrameImpl() {}
bool CefV8StackFrameImpl::IsValid() {
return true;
}
CefString CefV8StackFrameImpl::GetScriptName() {
return script_name_;
}
CefString CefV8StackFrameImpl::GetScriptNameOrSourceURL() {
return script_name_or_source_url_;
}
CefString CefV8StackFrameImpl::GetFunctionName() {
return function_name_;
}
int CefV8StackFrameImpl::GetLineNumber() {
return line_number_;
}
int CefV8StackFrameImpl::GetColumn() {
return column_;
}
bool CefV8StackFrameImpl::IsEval() {
return is_eval_;
}
bool CefV8StackFrameImpl::IsConstructor() {
return is_constructor_;
}
// Enable deprecation warnings on Windows. See http://crbug.com/585142.
#if BUILDFLAG(IS_WIN)
#if defined(__clang__)
#pragma GCC diagnostic pop
#else
#pragma warning(pop)
#endif
#endif
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