Issue 1280 - Update v8

src/JsValue.cpp

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <vector>
+#include <v8.h>
 #include <AdblockPlus.h>
 
 #include "JsContext.h"
 #include "JsError.h"
 #include "Utils.h"
 
-AdblockPlus::JsValue::JsValue(AdblockPlus::JsEnginePtr jsEngine,
-      v8::Handle<v8::Value> value)
+using namespace AdblockPlus;
+
+JsValue::JsValue(const JsEnginePtr& jsEngine, const v8::Handle<v8::Value> value, JsValue::PrivateCtrArg)
     : jsEngine(jsEngine),
-      value(jsEngine->isolate, value)
-{
-}
-
-AdblockPlus::JsValue::JsValue(AdblockPlus::JsValuePtr value)
-    : jsEngine(value->jsEngine),
-      value(value->value)
-{
-}
-
-AdblockPlus::JsValue::~JsValue()
-{
-}
-
-bool AdblockPlus::JsValue::IsUndefined() const
-{
-  const JsContext context(jsEngine);
-  return value->IsUndefined();
-}
-
-bool AdblockPlus::JsValue::IsNull() const
-{
-  const JsContext context(jsEngine);
-  return value->IsNull();
-}
-
-bool AdblockPlus::JsValue::IsString() const
-{
-  const JsContext context(jsEngine);
+    value(jsEngine->isolate, value)
+{
+}
+
+JsValue::JsValue(const JsValuePtr& value)
+  : jsEngine(value->jsEngine)
+  , value(value->value)
+{
+
+}
+
+JsValue::~JsValue()
+{
+}
+
+bool JsValue::IsUndefined() const
+{
+  const JsContext context(jsEngine);
+  return unwrapValue()->IsUndefined();
+}
+
+bool JsValue::IsNull() const
+{
+  const JsContext context(jsEngine);
+  return unwrapValue()->IsNull();
+}
+
+bool JsValue::IsString() const
+{
+  const JsContext context(jsEngine);
+  auto value = unwrapValue();
   return value->IsString() || value->IsStringObject();
 }
 
-bool AdblockPlus::JsValue::IsNumber() const
-{
-  const JsContext context(jsEngine);
+bool JsValue::IsNumber() const
+{
+  const JsContext context(jsEngine);
+  auto value = unwrapValue();
   return value->IsNumber() || value->IsNumberObject();
 }
 
-bool AdblockPlus::JsValue::IsBool() const
-{
-  const JsContext context(jsEngine);
+bool JsValue::IsBool() const
+{
+  const JsContext context(jsEngine);
+  auto value = unwrapValue();
   return value->IsBoolean() || value->IsBooleanObject();
 }
 
-bool AdblockPlus::JsValue::IsObject() const
-{
-  const JsContext context(jsEngine);
-  return value->IsObject();
-}
-
-bool AdblockPlus::JsValue::IsArray() const
-{
-  const JsContext context(jsEngine);
-  return value->IsArray();
-}
-
-bool AdblockPlus::JsValue::IsFunction() const
-{
-  const JsContext context(jsEngine);
-  return value->IsFunction();
-}
-
-std::string AdblockPlus::JsValue::AsString() const
-{
-  const JsContext context(jsEngine);
-  return Utils::FromV8String(value);
-}
-
-int64_t AdblockPlus::JsValue::AsInt() const
-{
-  const JsContext context(jsEngine);
-  return value->IntegerValue();
-}
-
-bool AdblockPlus::JsValue::AsBool() const
-{
-  const JsContext context(jsEngine);
-  return value->BooleanValue();
-}
-
-AdblockPlus::JsValueList AdblockPlus::JsValue::AsList() const
+bool JsValue::IsObject() const
+{
+  const JsContext context(jsEngine);
+  return unwrapValue()->IsObject();
+}
+
+bool JsValue::IsArray() const
+{
+  const JsContext context(jsEngine);
+  return unwrapValue()->IsArray();
+}
+
+bool JsValue::IsFunction() const
+{
+  const JsContext context(jsEngine);
+  return unwrapValue()->IsFunction();
+}
+
+std::string JsValue::AsString() const
+{
+  const JsContext context(jsEngine);
+  return Utils::FromV8String(unwrapValue());
+}
+
+int64_t JsValue::AsInt() const
+{
+  const JsContext context(jsEngine);
+  return unwrapValue()->IntegerValue();
+}
+
+bool JsValue::AsBool() const
+{
+  const JsContext context(jsEngine);
+  return unwrapValue()->BooleanValue();
+}
+
+JsValueList JsValue::AsList() const
 {
   if (!IsArray())
     throw std::runtime_error("Cannot convert a non-array to list");
 
   const JsContext context(jsEngine);
   JsValueList result;
-  v8::Persistent<v8::Array> array = v8::Persistent<v8::Array>::Cast<v8::Value>(value);
+  auto array = v8::Local<v8::Array>::Cast(unwrapValue());
   uint32_t length = array->Length();
   for (uint32_t i = 0; i < length; i++)
   {
     v8::Local<v8::Value> item = array->Get(i);
-    result.push_back(JsValuePtr(new JsValue(jsEngine, item)));
+    result.push_back(std::make_shared<JsValue>(jsEngine, item, PrivateCtrArg()));
   }
   return result;
 }
 
-std::vector<std::string> AdblockPlus::JsValue::GetOwnPropertyNames() const
+std::vector<std::string> JsValue::GetOwnPropertyNames() const
 {
   if (!IsObject())
     throw new std::runtime_error("Attempting to get propert list for a non-object");
 
   const JsContext context(jsEngine);
-  const v8::Persistent<v8::Object> object = v8::Persistent<v8::Object>::Cast<v8::Value>(value);
-  JsValueList properties = JsValuePtr(new JsValue(jsEngine, object->GetOwnPropertyNames()))->AsList();
   std::vector<std::string> result;
+  auto object = v8::Local<v8::Object>::Cast(unwrapValue());
+  JsValueList properties = std::make_shared<JsValue>(jsEngine, object->GetOwnPropertyNames(), PrivateCtrArg())->AsList();
   for (JsValueList::iterator it = properties.begin(); it != properties.end(); ++it)
     result.push_back((*it)->AsString());
   return result;
 }
 
 
-AdblockPlus::JsValuePtr AdblockPlus::JsValue::GetProperty(const std::string& name) const
+JsValuePtr JsValue::GetProperty(const std::string& name) const
 {
   if (!IsObject())
     throw new std::runtime_error("Attempting to get property of a non-object");
 
   const JsContext context(jsEngine);
-  v8::Local<v8::String> property = Utils::ToV8String(name);
-  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast<v8::Value>(value);
-  return JsValuePtr(new JsValue(jsEngine, obj->Get(property)));
-}
-
-void AdblockPlus::JsValue::SetProperty(const std::string& name, v8::Handle<v8::Value> val)
+  v8::Local<v8::String> property = Utils::ToV8String(jsEngine->isolate, name);
+  auto obj = v8::Local<v8::Object>::Cast(unwrapValue());
+  return std::make_shared<JsValue>(jsEngine, obj->Get(property), PrivateCtrArg());
+}
+
+void JsValue::SetProperty(const std::string& name, const v8::Handle<v8::Value> val)
 {
   if (!IsObject())
     throw new std::runtime_error("Attempting to set property on a non-object");
 
-  v8::Local<v8::String> property = Utils::ToV8String(name);
-  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast<v8::Value>(value);
+  v8::Local<v8::String> property = Utils::ToV8String(jsEngine->isolate, name);
+  auto obj = v8::Local<v8::Object>::Cast(unwrapValue());
   obj->Set(property, val);
 }
 
-void AdblockPlus::JsValue::SetProperty(const std::string& name, const std::string& val)
-{
-  const JsContext context(jsEngine);
-  SetProperty(name, Utils::ToV8String(val));
-}
-
-void AdblockPlus::JsValue::SetProperty(const std::string& name, int64_t val)
-{
-  const JsContext context(jsEngine);
-  SetProperty(name, v8::Number::New(val));
-}
-
-void AdblockPlus::JsValue::SetProperty(const std::string& name, JsValuePtr val)
-{
-  const JsContext context(jsEngine);
-  SetProperty(name, val->value);
-}
-
-void AdblockPlus::JsValue::SetProperty(const std::string& name, bool val)
+v8::Local<v8::Value> JsValue::unwrapValue() const
+{
+  return v8::Local<v8::Value>::New(jsEngine->isolate, value);
+}
+
+void JsValue::SetProperty(const std::string& name, const std::string& val)
+{
+  const JsContext context(jsEngine);
+  SetProperty(name, Utils::ToV8String(jsEngine->isolate, val));
+}
+
+void JsValue::SetProperty(const std::string& name, int64_t val)
+{
+  const JsContext context(jsEngine);
+  SetProperty(name, v8::Number::New(jsEngine->isolate, val));
+}
+
+void JsValue::SetProperty(const std::string& name, const JsValuePtr& val)
+{
+  const JsContext context(jsEngine);
+  SetProperty(name, val->unwrapValue());
+}
+
+void JsValue::SetProperty(const std::string& name, bool val)
 {
   const JsContext context(jsEngine);
   SetProperty(name, v8::Boolean::New(val));
 }
 
-std::string AdblockPlus::JsValue::GetClass() const
+std::string JsValue::GetClass() const
 {
   if (!IsObject())
     throw new std::runtime_error("Cannot get constructor of a non-object");
 
   const JsContext context(jsEngine);
-  v8::Persistent<v8::Object> obj = v8::Persistent<v8::Object>::Cast<v8::Value>(value);
+  auto obj = v8::Local<v8::Object>::Cast(unwrapValue());
   return Utils::FromV8String(obj->GetConstructorName());
 }
 
-AdblockPlus::JsValuePtr AdblockPlus::JsValue::Call(
-    const JsValueList& params,
-    AdblockPlus::JsValuePtr thisPtr) const
-{
+JsValuePtr JsValue::Call(const JsValueList& params, JsValuePtr thisPtr) const
+{
+  const JsContext context(jsEngine);
+
   if (!IsFunction())
     throw new std::runtime_error("Attempting to call a non-function");
 
-  const JsContext context(jsEngine);
-
   if (!thisPtr)
-    thisPtr = JsValuePtr(new JsValue(jsEngine, jsEngine->context->Global()));
+  {
+    auto localContext = v8::Local<v8::Context>::New(jsEngine->isolate, jsEngine->context);
+    thisPtr = std::make_shared<JsValue>(jsEngine, localContext->Global(), PrivateCtrArg());
+  }
   if (!thisPtr->IsObject())
     throw new std::runtime_error("`this` pointer has to be an object");
-  v8::Persistent<v8::Object> thisObj = v8::Persistent<v8::Object>::Cast<v8::Value>(thisPtr->value);
-
-  std::vector<v8::Handle<v8::Value> > argv;
+  auto thisObj = v8::Local<v8::Object>::Cast(thisPtr->unwrapValue());
+
+  std::vector<v8::Handle<v8::Value>> argv;
   for (JsValueList::const_iterator it = params.begin(); it != params.end(); ++it)
-    argv.push_back((*it)->value);
+    argv.push_back((*it)->unwrapValue());
 
   const v8::TryCatch tryCatch;
-  v8::Persistent<v8::Function> func = v8::Persistent<v8::Function>::Cast<v8::Value>(value);
+  auto func = v8::Local<v8::Function>::Cast(unwrapValue());
   v8::Local<v8::Value> result = func->Call(thisObj, argv.size(),
       argv.size() ? &argv.front() : 0);
 
   if (tryCatch.HasCaught())
-    throw AdblockPlus::JsError(tryCatch.Exception(), tryCatch.Message());
-
-  return JsValuePtr(new JsValue(jsEngine, result));
-}
+    throw JsError(tryCatch.Exception(), tryCatch.Message());
+
+  return std::make_shared<JsValue>(jsEngine, result, JsValue::Private::CtrArg());
+}