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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "test/inspector/inspector-impl.h"
#include "include/v8.h"
#include "src/inspector/string-16.h"
namespace {
const int kInspectorClientIndex = v8::Context::kDebugIdIndex + 1;
class ChannelImpl final : public v8_inspector::V8Inspector::Channel {
public:
explicit ChannelImpl(InspectorClientImpl::FrontendChannel* frontend_channel)
: frontend_channel_(frontend_channel) {}
virtual ~ChannelImpl() = default;
private:
void sendProtocolResponse(int callId,
const v8_inspector::StringView& message) override {
frontend_channel_->SendMessageToFrontend(message);
}
void sendProtocolNotification(
const v8_inspector::StringView& message) override {
frontend_channel_->SendMessageToFrontend(message);
}
void flushProtocolNotifications() override {}
InspectorClientImpl::FrontendChannel* frontend_channel_;
DISALLOW_COPY_AND_ASSIGN(ChannelImpl);
};
InspectorClientImpl* InspectorClientFromContext(
v8::Local<v8::Context> context) {
InspectorClientImpl* inspector_client = static_cast<InspectorClientImpl*>(
context->GetAlignedPointerFromEmbedderData(kInspectorClientIndex));
CHECK(inspector_client);
return inspector_client;
}
v8_inspector::String16 ToString16(v8::Local<v8::String> str) {
std::unique_ptr<uint16_t[]> buffer(new uint16_t[str->Length()]);
str->Write(reinterpret_cast<uint16_t*>(buffer.get()), 0, str->Length());
return v8_inspector::String16(buffer.get(), str->Length());
}
void MessageHandler(v8::Local<v8::Message> message,
v8::Local<v8::Value> exception) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
v8::Local<v8::Context> context = isolate->GetEnteredContext();
if (context.IsEmpty()) return;
v8_inspector::V8Inspector* inspector =
InspectorClientImpl::InspectorFromContext(context);
v8::Local<v8::StackTrace> stack = message->GetStackTrace();
int script_id = message->GetScriptOrigin().ScriptID()->Value();
if (!stack.IsEmpty() && stack->GetFrameCount() > 0) {
int top_script_id = stack->GetFrame(0)->GetScriptId();
if (top_script_id == script_id) script_id = 0;
}
int line_number = message->GetLineNumber(context).FromMaybe(0);
int column_number = 0;
if (message->GetStartColumn(context).IsJust())
column_number = message->GetStartColumn(context).FromJust() + 1;
v8_inspector::StringView detailed_message;
v8_inspector::String16 message_text_string = ToString16(message->Get());
v8_inspector::StringView message_text(message_text_string.characters16(),
message_text_string.length());
v8_inspector::String16 url_string;
if (message->GetScriptOrigin().ResourceName()->IsString()) {
url_string =
ToString16(message->GetScriptOrigin().ResourceName().As<v8::String>());
}
v8_inspector::StringView url(url_string.characters16(), url_string.length());
inspector->exceptionThrown(context, message_text, exception, detailed_message,
url, line_number, column_number,
inspector->createStackTrace(stack), script_id);
}
} // namespace
class ConnectTask : public TaskRunner::Task {
public:
ConnectTask(InspectorClientImpl* client, v8::base::Semaphore* ready_semaphore)
: client_(client), ready_semaphore_(ready_semaphore) {}
virtual ~ConnectTask() = default;
bool is_inspector_task() final { return true; }
void Run(v8::Isolate* isolate,
const v8::Global<v8::Context>& global_context) {
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = global_context.Get(isolate);
client_->connect(context);
if (ready_semaphore_) ready_semaphore_->Signal();
}
private:
InspectorClientImpl* client_;
v8::base::Semaphore* ready_semaphore_;
};
InspectorClientImpl::InspectorClientImpl(TaskRunner* task_runner,
FrontendChannel* frontend_channel,
v8::base::Semaphore* ready_semaphore)
: isolate_(nullptr),
task_runner_(task_runner),
frontend_channel_(frontend_channel) {
task_runner_->Append(new ConnectTask(this, ready_semaphore));
}
InspectorClientImpl::~InspectorClientImpl() {}
void InspectorClientImpl::connect(v8::Local<v8::Context> context) {
isolate_ = context->GetIsolate();
isolate_->AddMessageListener(MessageHandler);
channel_.reset(new ChannelImpl(frontend_channel_));
inspector_ = v8_inspector::V8Inspector::create(isolate_, this);
session_ = inspector_->connect(1, channel_.get(), v8_inspector::StringView());
context->SetAlignedPointerInEmbedderData(kInspectorClientIndex, this);
inspector_->contextCreated(
v8_inspector::V8ContextInfo(context, 1, v8_inspector::StringView()));
context_.Reset(isolate_, context);
}
v8::Local<v8::Context> InspectorClientImpl::ensureDefaultContextInGroup(int) {
CHECK(isolate_);
return context_.Get(isolate_);
}
double InspectorClientImpl::currentTimeMS() {
return v8::base::OS::TimeCurrentMillis();
}
void InspectorClientImpl::runMessageLoopOnPause(int) {
task_runner_->RunMessageLoop(true);
}
void InspectorClientImpl::quitMessageLoopOnPause() {
task_runner_->QuitMessageLoop();
}
v8_inspector::V8Inspector* InspectorClientImpl::InspectorFromContext(
v8::Local<v8::Context> context) {
return InspectorClientFromContext(context)->inspector_.get();
}
v8_inspector::V8InspectorSession* InspectorClientImpl::SessionFromContext(
v8::Local<v8::Context> context) {
return InspectorClientFromContext(context)->session_.get();
}
class SendMessageToBackendTask : public TaskRunner::Task {
public:
explicit SendMessageToBackendTask(const v8_inspector::String16& message)
: message_(message) {}
bool is_inspector_task() final { return true; }
void Run(v8::Isolate* isolate,
const v8::Global<v8::Context>& global_context) override {
v8_inspector::V8InspectorSession* session = nullptr;
{
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = global_context.Get(isolate);
session = InspectorClientImpl::SessionFromContext(context);
CHECK(session);
}
v8_inspector::StringView message_view(
reinterpret_cast<const uint16_t*>(message_.characters16()),
message_.length());
session->dispatchProtocolMessage(message_view);
}
private:
v8_inspector::String16 message_;
};
TaskRunner* SendMessageToBackendExtension::backend_task_runner_ = nullptr;
v8::Local<v8::FunctionTemplate>
SendMessageToBackendExtension::GetNativeFunctionTemplate(
v8::Isolate* isolate, v8::Local<v8::String> name) {
return v8::FunctionTemplate::New(
isolate, SendMessageToBackendExtension::SendMessageToBackend);
}
void SendMessageToBackendExtension::SendMessageToBackend(
const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK(backend_task_runner_);
CHECK(args.Length() == 1 && args[0]->IsString());
v8::Local<v8::String> message = args[0].As<v8::String>();
backend_task_runner_->Append(
new SendMessageToBackendTask(ToString16(message)));
}
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