Get rid of dependencies on v8.h in public header files

src/JsEngine.cpp

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 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 <AdblockPlus.h>
-#include <sstream>
 
 #include "GlobalJsObject.h"
+#include "JsContext.h"
+#include "JsError.h"
 #include "Utils.h"
 
 namespace
 {
   v8::Handle<v8::Script> CompileScript(const std::string& source, const std::string& filename)
   {
     const v8::Handle<v8::String> v8Source = v8::String::New(source.c_str());
     if (filename.length())
     {
       const v8::Handle<v8::String> v8Filename = v8::String::New(filename.c_str());
       return v8::Script::Compile(v8Source, v8Filename);
     }
     else
       return v8::Script::Compile(v8Source);
   }
 
   void CheckTryCatch(const v8::TryCatch& tryCatch)
   {
     if (tryCatch.HasCaught())
       throw AdblockPlus::JsError(tryCatch.Exception(), tryCatch.Message());
   }
-
-  std::string ExceptionToString(const v8::Handle<v8::Value> exception,
-      const v8::Handle<v8::Message> message)
-  {
-    std::stringstream error;
-    error << *v8::String::Utf8Value(exception);
-    if (!message.IsEmpty())
-    {
-      error << " at ";
-      error << *v8::String::Utf8Value(message->GetScriptResourceName());
-      error << ":";
-      error << message->GetLineNumber();
-    }
-    return error.str();
-  }
-}
-
-AdblockPlus::JsError::JsError(const v8::Handle<v8::Value> exception,
-    const v8::Handle<v8::Message> message)
-  : std::runtime_error(ExceptionToString(exception, message))
-{
 }
 
 AdblockPlus::JsEngine::JsEngine()
   : isolate(v8::Isolate::GetCurrent())
 {
 }
 
 AdblockPlus::JsEnginePtr AdblockPlus::JsEngine::New(const AppInfo& appInfo)
 {
   JsEnginePtr result(new JsEngine());
 
   const v8::Locker locker(result->isolate);
   const v8::HandleScope handleScope;
 
-  result->context = v8::Context::New();
+  result->context.reset(new v8::Persistent<v8::Context>(v8::Context::New()));
   AdblockPlus::GlobalJsObject::Setup(result, appInfo,
-      JsValuePtr(new JsValue(result, result->context->Global())));
+      JsValuePtr(new JsValue(result, (*result->context)->Global())));
   return result;
 }
 
 AdblockPlus::JsValuePtr AdblockPlus::JsEngine::Evaluate(const std::string& source,
     const std::string& filename)
 {
-  const Context context(shared_from_this());
+  const JsContext context(shared_from_this());
   const v8::TryCatch tryCatch;
   const v8::Handle<v8::Script> script = CompileScript(source, filename);
   CheckTryCatch(tryCatch);
   v8::Local<v8::Value> result = script->Run();
   CheckTryCatch(tryCatch);
   return JsValuePtr(new JsValue(shared_from_this(), result));
 }
 
 void AdblockPlus::JsEngine::SetEventCallback(const std::string& eventName,
     AdblockPlus::JsEngine::EventCallback callback)
@@ skipping 13 matching lines @@
     it->second();
 }
 
 void AdblockPlus::JsEngine::Gc()
 {
   while (!v8::V8::IdleNotification());
 }
 
 AdblockPlus::JsValuePtr AdblockPlus::JsEngine::NewValue(const std::string& val)
 {
-  const Context context(shared_from_this());
+  const JsContext context(shared_from_this());
   return JsValuePtr(new JsValue(shared_from_this(),
       v8::String::New(val.c_str(), val.length())));
 }
 
 AdblockPlus::JsValuePtr AdblockPlus::JsEngine::NewValue(int64_t val)
 {
-  const Context context(shared_from_this());
+  const JsContext context(shared_from_this());
   return JsValuePtr(new JsValue(shared_from_this(), v8::Number::New(val)));
 }
 
 AdblockPlus::JsValuePtr AdblockPlus::JsEngine::NewValue(bool val)
 {
-  const Context context(shared_from_this());
+  const JsContext context(shared_from_this());
   return JsValuePtr(new JsValue(shared_from_this(), v8::Boolean::New(val)));
 }
 
 AdblockPlus::JsValuePtr AdblockPlus::JsEngine::NewObject()
 {
-  const Context context(shared_from_this());
+  const JsContext context(shared_from_this());
   return JsValuePtr(new JsValue(shared_from_this(), v8::Object::New()));
 }
 
 AdblockPlus::JsValuePtr AdblockPlus::JsEngine::NewCallback(
     v8::InvocationCallback callback)
 {
-  const Context context(shared_from_this());
+  const JsContext context(shared_from_this());
 
   // Note: we are leaking this weak pointer, no obvious way to destroy it when
   // it's no longer used
   std::tr1::weak_ptr<JsEngine>* data =
       new std::tr1::weak_ptr<JsEngine>(shared_from_this());
   v8::Local<v8::FunctionTemplate> templ = v8::FunctionTemplate::New(callback,
       v8::External::New(data));
   return JsValuePtr(new JsValue(shared_from_this(), templ->GetFunction()));
 }
 
 AdblockPlus::JsEnginePtr AdblockPlus::JsEngine::FromArguments(const v8::Arguments& arguments)
 {
   const v8::Local<const v8::External> external =
       v8::Local<const v8::External>::Cast(arguments.Data());
   std::tr1::weak_ptr<JsEngine>* data =
       static_cast<std::tr1::weak_ptr<JsEngine>*>(external->Value());
   JsEnginePtr result = data->lock();
   if (!result)
     throw std::runtime_error("Oops, our JsEngine is gone, how did that happen?");
   return result;
 }
 
 AdblockPlus::JsValueList AdblockPlus::JsEngine::ConvertArguments(const v8::Arguments& arguments)
 {
-  const Context context(shared_from_this());
+  const JsContext context(shared_from_this());
   JsValueList list;
   for (int i = 0; i < arguments.Length(); i++)
     list.push_back(JsValuePtr(new JsValue(shared_from_this(), arguments[i])));
   return list;
 }
 
 AdblockPlus::FileSystemPtr AdblockPlus::JsEngine::GetFileSystem()
 {
   if (!fileSystem)
     fileSystem.reset(new DefaultFileSystem());
@@ skipping 30 matching lines @@
   return logSystem;
 }
 
 void AdblockPlus::JsEngine::SetLogSystem(AdblockPlus::LogSystemPtr val)
 {
   if (!val)
     throw std::runtime_error("LogSystem cannot be null");
 
   logSystem = val;
 }
-
-AdblockPlus::JsEngine::Context::Context(const JsEnginePtr jsEngine)
-    : locker(jsEngine->isolate), handleScope(),
-      contextScope(jsEngine->context)
-{
-}