[inspector] Initial import of v8_inspector.

src/inspector/InjectedScriptNative.cpp

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/inspector/InjectedScriptNative.h"
+
+namespace v8_inspector {
+
+InjectedScriptNative::InjectedScriptNative(v8::Isolate* isolate)
+    : m_lastBoundObjectId(1), m_isolate(isolate) {}
+
+static const char privateKeyName[] = "v8-inspector#injectedScript";
+
+InjectedScriptNative::~InjectedScriptNative() {}
+
+void InjectedScriptNative::setOnInjectedScriptHost(
+    v8::Local<v8::Object> injectedScriptHost) {
+  v8::HandleScope handleScope(m_isolate);
+  v8::Local<v8::External> external = v8::External::New(m_isolate, this);
+  v8::Local<v8::Private> privateKey = v8::Private::ForApi(
+      m_isolate, v8::String::NewFromUtf8(m_isolate, privateKeyName,
+                                         v8::NewStringType::kInternalized)
+                     .ToLocalChecked());
+  injectedScriptHost->SetPrivate(m_isolate->GetCurrentContext(), privateKey,
+                                 external);
+}
+
+InjectedScriptNative* InjectedScriptNative::fromInjectedScriptHost(
+    v8::Local<v8::Object> injectedScriptObject) {
+  v8::Isolate* isolate = injectedScriptObject->GetIsolate();
+  v8::HandleScope handleScope(isolate);
+  v8::Local<v8::Context> context = isolate->GetCurrentContext();
+  v8::Local<v8::Private> privateKey = v8::Private::ForApi(
+      isolate, v8::String::NewFromUtf8(isolate, privateKeyName,
+                                       v8::NewStringType::kInternalized)
+                   .ToLocalChecked());
+  v8::Local<v8::Value> value =
+      injectedScriptObject->GetPrivate(context, privateKey).ToLocalChecked();
+  DCHECK(value->IsExternal());
+  v8::Local<v8::External> external = value.As<v8::External>();
+  return static_cast<InjectedScriptNative*>(external->Value());
+}
+
+int InjectedScriptNative::bind(v8::Local<v8::Value> value,
+                               const String16& groupName) {
+  if (m_lastBoundObjectId <= 0) m_lastBoundObjectId = 1;
+  int id = m_lastBoundObjectId++;
+  m_idToWrappedObject[id] =
+      wrapUnique(new v8::Global<v8::Value>(m_isolate, value));
+  addObjectToGroup(id, groupName);
+  return id;
+}
+
+void InjectedScriptNative::unbind(int id) {
+  m_idToWrappedObject.erase(id);
+  m_idToObjectGroupName.erase(id);
+}
+
+v8::Local<v8::Value> InjectedScriptNative::objectForId(int id) {
+  auto iter = m_idToWrappedObject.find(id);
+  return iter != m_idToWrappedObject.end() ? iter->second->Get(m_isolate)
+                                           : v8::Local<v8::Value>();
+}
+
+void InjectedScriptNative::addObjectToGroup(int objectId,
+                                            const String16& groupName) {
+  if (groupName.isEmpty()) return;
+  if (objectId <= 0) return;
+  m_idToObjectGroupName[objectId] = groupName;
+  m_nameToObjectGroup[groupName].push_back(
+      objectId);  // Creates an empty vector if key is not there
+}
+
+void InjectedScriptNative::releaseObjectGroup(const String16& groupName) {
+  if (groupName.isEmpty()) return;
+  NameToObjectGroup::iterator groupIt = m_nameToObjectGroup.find(groupName);
+  if (groupIt == m_nameToObjectGroup.end()) return;
+  for (int id : groupIt->second) unbind(id);
+  m_nameToObjectGroup.erase(groupIt);
+}
+
+String16 InjectedScriptNative::groupName(int objectId) const {
+  if (objectId <= 0) return String16();
+  IdToObjectGroupName::const_iterator iterator =
+      m_idToObjectGroupName.find(objectId);
+  return iterator != m_idToObjectGroupName.end() ? iterator->second
+                                                 : String16();
+}
+
+}  // namespace v8_inspector