[inspector] migrate Runtime to new style

src/inspector/v8-value-copier.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 "src/inspector/v8-value-copier.h"
 
 namespace v8_inspector {
 
 namespace {
 
@@ skipping 89 matching lines @@
 v8::Maybe<bool> createDataProperty(v8::Local<v8::Context> context,
                                    v8::Local<v8::Array> array, int index,
                                    v8::Local<v8::Value> value) {
   v8::TryCatch tryCatch(context->GetIsolate());
   v8::Isolate::DisallowJavascriptExecutionScope throwJs(
       context->GetIsolate(),
       v8::Isolate::DisallowJavascriptExecutionScope::THROW_ON_FAILURE);
   return array->CreateDataProperty(context, index, value);
 }
 
+protocol::Response toProtocolValue(v8::Local<v8::Context> context,
+                                   v8::Local<v8::Value> value, int maxDepth,
+                                   std::unique_ptr<protocol::Value>& result) {
+  using protocol::Response;
+  if (value.IsEmpty()) {
+    UNREACHABLE();
+    return Response::InternalError();
+  }
+
+  if (!maxDepth) return Response::Error("Object reference chain is too long");
+  maxDepth--;
+
+  if (value->IsNull() || value->IsUndefined()) {
+    result = protocol::Value::null();
+    return Response::OK();
+  }
+  if (value->IsBoolean()) {
+    result =
+        protocol::FundamentalValue::create(value.As<v8::Boolean>()->Value());
+    return Response::OK();
+  }
+  if (value->IsNumber()) {
+    double doubleValue = value.As<v8::Number>()->Value();
+    int intValue = static_cast<int>(doubleValue);
+    if (intValue == doubleValue) {
+      result = protocol::FundamentalValue::create(intValue);
+      return Response::OK();
+    }
+    result = protocol::FundamentalValue::create(doubleValue);
+    return Response::OK();
+  }
+  if (value->IsString()) {
+    result =
+        protocol::StringValue::create(toProtocolString(value.As<v8::String>()));
+    return Response::OK();
+  }
+  if (value->IsArray()) {
+    v8::Local<v8::Array> array = value.As<v8::Array>();
+    std::unique_ptr<protocol::ListValue> inspectorArray =
+        protocol::ListValue::create();
+    uint32_t length = array->Length();
+    for (uint32_t i = 0; i < length; i++) {
+      v8::Local<v8::Value> value;
+      if (!array->Get(context, i).ToLocal(&value))
+        return Response::InternalError();
+      std::unique_ptr<protocol::Value> element;
+      Response response = toProtocolValue(context, value, maxDepth, element);
+      if (!response.isSuccess()) return response;
+      inspectorArray->pushValue(std::move(element));
+    }
+    result = std::move(inspectorArray);
+    return Response::OK();
+  }
+  if (value->IsObject()) {
+    std::unique_ptr<protocol::DictionaryValue> jsonObject =
+        protocol::DictionaryValue::create();
+    v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
+    v8::Local<v8::Array> propertyNames;
+    if (!object->GetPropertyNames(context).ToLocal(&propertyNames))
+      return Response::InternalError();
+    uint32_t length = propertyNames->Length();
+    for (uint32_t i = 0; i < length; i++) {
+      v8::Local<v8::Value> name;
+      if (!propertyNames->Get(context, i).ToLocal(&name))
+        return Response::InternalError();
+      // FIXME(yurys): v8::Object should support GetOwnPropertyNames
+      if (name->IsString()) {
+        v8::Maybe<bool> hasRealNamedProperty = object->HasRealNamedProperty(
+            context, v8::Local<v8::String>::Cast(name));
+        if (!hasRealNamedProperty.IsJust() || !hasRealNamedProperty.FromJust())
+          continue;
+      }
+      v8::Local<v8::String> propertyName;
+      if (!name->ToString(context).ToLocal(&propertyName)) continue;
+      v8::Local<v8::Value> property;
+      if (!object->Get(context, name).ToLocal(&property))
+        return Response::InternalError();
+      std::unique_ptr<protocol::Value> propertyValue;
+      Response response =
+          toProtocolValue(context, property, maxDepth, propertyValue);
+      if (!response.isSuccess()) return response;
+      jsonObject->setValue(toProtocolString(propertyName),
+                           std::move(propertyValue));
+    }
+    result = std::move(jsonObject);
+    return Response::OK();
+  }
+  return Response::Error("Object couldn't be returned by value");
+}
+
 }  // namespace v8_inspector