Reland "DevTools: extract common inspector bindigns code into InspectorWrapper"

Source/bindings/core/v8/inspector/InspectorWrapper.cpp

+// Copyright 2015 The Chromium 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 "config.h"
+#include "bindings/core/v8/inspector/InspectorWrapper.h"
+
+#include "bindings/core/v8/V8ScriptRunner.h"
+#include "wtf/RefPtr.h"
+
+namespace blink {
+
+v8::Local<v8::FunctionTemplate> InspectorWrapperBase::createWrapperTemplate(v8::Isolate* isolate, const char* className, const Vector<V8MethodConfiguration>& methods, const Vector<V8AttributeConfiguration>& attributes)
+{
+    v8::Local<v8::FunctionTemplate> functionTemplate = v8::FunctionTemplate::New(isolate);
+
+    functionTemplate->SetClassName(v8::String::NewFromUtf8(isolate, className, v8::NewStringType::kInternalized).ToLocalChecked());
+    v8::Local<v8::ObjectTemplate> instanceTemplate = functionTemplate->InstanceTemplate();
+
+    for (auto& config : attributes) {
+        v8::Local<v8::Name> v8name = v8::String::NewFromUtf8(isolate, config.name, v8::NewStringType::kInternalized).ToLocalChecked();
+        instanceTemplate->SetAccessor(v8name, config.callback);
+    }
+
+    for (auto& config : methods) {
+        v8::Local<v8::Name> v8name = v8::String::NewFromUtf8(isolate, config.name, v8::NewStringType::kInternalized).ToLocalChecked();
+        v8::Local<v8::FunctionTemplate> functionTemplate = v8::FunctionTemplate::New(isolate, config.callback);
+        functionTemplate->RemovePrototype();
+        instanceTemplate->Set(v8name, functionTemplate, static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::DontEnum | v8::ReadOnly));
+    }
+
+    return functionTemplate;
+}
+
+v8::Local<v8::Object> InspectorWrapperBase::createWrapper(v8::Local<v8::FunctionTemplate> constructorTemplate, v8::Local<v8::Context> context)
+{
+    v8::Local<v8::Function> function;
+    if (!constructorTemplate->GetFunction(context).ToLocal(&function))
+        return v8::Local<v8::Object>();
+
+    // FIXME: don't depend on V8ScriptRunner
+    v8::Isolate* isolate = context->GetIsolate();
+    v8::MaybeLocal<v8::Object> maybeResult = V8ScriptRunner::instantiateObject(isolate, function);
+    v8::Local<v8::Object> result;
+    if (!maybeResult.ToLocal(&result))
+        return v8::Local<v8::Object>();
+
+    return result;
+}
+
+void* InspectorWrapperBase::unwrap(v8::Local<v8::Object> object, const char* name)
+{
+    v8::Isolate* isolate = object->GetIsolate();
+    v8::Local<v8::Value> value = object->GetHiddenValue(v8InternalizedString(isolate, name));
+    if (value.IsEmpty())
+        return nullptr;
+    if (!value->IsExternal())
+        return nullptr;
+    return value.As<v8::External>()->Value();
+}
+
+v8::Local<v8::String> InspectorWrapperBase::v8InternalizedString(v8::Isolate* isolate, const char* name)
+{
+    return v8::String::NewFromUtf8(isolate, name, v8::NewStringType::kInternalized).ToLocalChecked();
+}
+
+} // namespace blink