[inspector] added inspector test runner [part 2]

test/inspector-protocol/inspector-impl.cc

+// 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-protocol/inspector-impl.h"
+
+#include "include/v8.h"
+#include "src/base/platform/platform.h"
+#include "src/vector.h"
+
+namespace {
+
+const int kInspectorClientIndex = v8::Context::kDebugIdIndex + 1;
+
+InspectorClientImpl* FromContext(v8::Local<v8::Context> context) {
+  InspectorClientImpl* inspector_client = static_cast<InspectorClientImpl*>(
+      context->GetAlignedPointerFromEmbedderData(kInspectorClientIndex));
+  CHECK(inspector_client);
+  return inspector_client;
+}
+
+}  //  namespace
+
+void ChannelImpl::SendMessageToFrontend(
+    const v8_inspector::StringView& message) {
+  CHECK(!message.is8Bit());
+
+  v8::Isolate* isolate = v8::Isolate::GetCurrent();
+  v8::HandleScope handle_scope(isolate);
+  v8::Local<v8::String> message_string =
+      v8::String::NewFromTwoByte(isolate, message.characters16(),
+                                 v8::String::kNormalString, message.length());
+
+  std::string message_utf8 = *v8::String::Utf8Value(message_string);
+
+  const char* format_string = "InspectorTest.dispatchMessage(%s)";
+  v8::internal::Vector<char> source = v8::internal::Vector<char>::New(
+      message_utf8.length() + strlen(format_string));
+  int written = v8::base::OS::SNPrintF(source.start(), source.length(),
+                                       format_string, message_utf8.c_str());
+  CHECK(written != -1);
+  frontend_task_runner_->Append(
+      new ExecuteStringTask(std::string(source.start(), written)));
+}
+
+InspectorClientImpl::InspectorClientImpl() : isolate_(nullptr) {}
+
+InspectorClientImpl::~InspectorClientImpl() {}
+
+void InspectorClientImpl::connect(ChannelImpl* channel,
+                                  v8::Local<v8::Context> context) {
+  isolate_ = context->GetIsolate();
+
+  inspector_ = v8_inspector::V8Inspector::create(isolate_, this);
+  session_ = inspector_->connect(1, channel, 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) {
+  TaskRunner* task_runner = TaskRunner::FromContext(context_.Get(isolate_));
+  CHECK(task_runner);
+  task_runner->RunMessageLoop(true);
+}
+
+void InspectorClientImpl::quitMessageLoopOnPause() {
+  TaskRunner* task_runner = TaskRunner::FromContext(context_.Get(isolate_));
+  CHECK(task_runner);
+  task_runner->QuitMessageLoop();
+}
+
+v8_inspector::V8Inspector* InspectorClientImpl::InspectorFromContext(
+    v8::Local<v8::Context> context) {
+  return FromContext(context)->inspector_.get();
+}
+
+v8_inspector::V8InspectorSession* InspectorClientImpl::SessionFromContext(
+    v8::Local<v8::Context> context) {
+  return FromContext(context)->session_.get();
+}
+
+ConnectTask::ConnectTask(InspectorClientImpl* client, ChannelImpl* channel,
+                         v8::base::Semaphore* ready_semaphore)
+    : client_(client), channel_(channel), ready_semaphore_(ready_semaphore) {}
+
+void ConnectTask::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(channel_, context);
+  if (ready_semaphore_) ready_semaphore_->Signal();
+}
+
+TaskRunner* BackendExtension::frontend_task_runner_ = nullptr;
+
+v8::Local<v8::FunctionTemplate> BackendExtension::GetNativeFunctionTemplate(
+    v8::Isolate* isolate, v8::Local<v8::String> name) {
+  return v8::FunctionTemplate::New(isolate,
+                                   BackendExtension::EvaluateInFrontend);
+}
+
+void BackendExtension::EvaluateInFrontend(

[dgozman, 2016/09/27 16:30:36]

Let's remove this.

[kozy, 2016/09/27 17:00:53]

Done.

+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  CHECK(frontend_task_runner_);
+  CHECK(args.Length() == 1 && args[0]->IsString());
+
+  std::string expression =
+      *v8::String::Utf8Value(v8::Local<v8::String>::Cast(args[0]));
+  frontend_task_runner_->Append(new ExecuteStringTask(expression));
+}
+
+namespace {
+
+class ProcessMessageOnBackend : public TaskRunner::Task {
+ public:
+  ProcessMessageOnBackend(const std::string& message) : message_(message) {}
+
+  bool is_protocol_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 uint8_t*>(message_.data()), message_.length());
+    v8::MicrotasksScope microtasks_scope(isolate,

[dgozman, 2016/09/27 16:30:36]

Let's remove this. Why is it needed?

[kozy, 2016/09/27 17:00:53]

Done.

+                                         v8::MicrotasksScope::kRunMicrotasks);
+    session->dispatchProtocolMessage(message_view);
+  }
+
+ private:
+  std::string message_;
+};
+
+}  //  namespace
+
+TaskRunner* FrontendExtension::backend_task_runner_ = nullptr;
+
+v8::Local<v8::FunctionTemplate> FrontendExtension::GetNativeFunctionTemplate(
+    v8::Isolate* isolate, v8::Local<v8::String> name) {
+  return v8::FunctionTemplate::New(isolate,
+                                   FrontendExtension::SendMessageToBackend);
+}
+
+void FrontendExtension::SendMessageToBackend(
+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  CHECK(backend_task_runner_);
+  CHECK(args.Length() == 1 && args[0]->IsString());
+  std::string message =
+      *v8::String::Utf8Value(v8::Local<v8::String>::Cast(args[0]));
+  backend_task_runner_->Append(new ProcessMessageOnBackend(message));
+}