Revert of Make DOMWrapperWorld::current() return a reference instead of a pointer

Source/bindings/v8/ScriptController.cpp

 /*
  * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 191 matching lines @@
     return result;
 }
 
 bool ScriptController::initializeMainWorld()
 {
     if (m_windowShell->isContextInitialized())
         return false;
     return windowShell(DOMWrapperWorld::mainWorld())->isContextInitialized();
 }
 
-V8WindowShell* ScriptController::existingWindowShell(DOMWrapperWorld& world)
+V8WindowShell* ScriptController::existingWindowShell(DOMWrapperWorld* world)
 {
-    if (world.isMainWorld())
+    ASSERT(world);
+
+    if (world->isMainWorld())
         return m_windowShell->isContextInitialized() ? m_windowShell.get() : 0;
 
-    IsolatedWorldMap::iterator iter = m_isolatedWorlds.find(world.worldId());
+    IsolatedWorldMap::iterator iter = m_isolatedWorlds.find(world->worldId());
     if (iter == m_isolatedWorlds.end())
         return 0;
     return iter->value->isContextInitialized() ? iter->value.get() : 0;
 }
 
-V8WindowShell* ScriptController::windowShell(DOMWrapperWorld& world)
+V8WindowShell* ScriptController::windowShell(DOMWrapperWorld* world)
 {
+    ASSERT(world);
+
     V8WindowShell* shell = 0;
-    if (world.isMainWorld())
+    if (world->isMainWorld())
         shell = m_windowShell.get();
     else {
-        IsolatedWorldMap::iterator iter = m_isolatedWorlds.find(world.worldId());
+        IsolatedWorldMap::iterator iter = m_isolatedWorlds.find(world->worldId());
         if (iter != m_isolatedWorlds.end())
             shell = iter->value.get();
         else {
             OwnPtr<V8WindowShell> isolatedWorldShell = V8WindowShell::create(m_frame, world, m_isolate);
             shell = isolatedWorldShell.get();
-            m_isolatedWorlds.set(world.worldId(), isolatedWorldShell.release());
+            m_isolatedWorlds.set(world->worldId(), isolatedWorldShell.release());
         }
     }
     if (!shell->isContextInitialized() && shell->initializeIfNeeded())
         m_frame->loader().dispatchDidClearWindowObjectInWorld(world);
     return shell;
 }
 
 bool ScriptController::shouldBypassMainWorldContentSecurityPolicy()
 {
     v8::Handle<v8::Context> context = m_isolate->GetCurrentContext();
     if (context.IsEmpty() || !toDOMWindow(context))
         return false;
-    DOMWrapperWorld& world = DOMWrapperWorld::current(m_isolate);
-    return world.isIsolatedWorld() ? world.isolatedWorldHasContentSecurityPolicy() : false;
+    DOMWrapperWorld* world = DOMWrapperWorld::current(m_isolate);
+    return world->isIsolatedWorld() ? world->isolatedWorldHasContentSecurityPolicy() : false;
 }
 
 TextPosition ScriptController::eventHandlerPosition() const
 {
     ScriptableDocumentParser* parser = m_frame->document()->scriptableDocumentParser();
     if (parser)
         return parser->textPosition();
     return TextPosition::minimumPosition();
 }
 
@@ skipping 178 matching lines @@
 void ScriptController::setCaptureCallStackForUncaughtExceptions(bool value)
 {
     v8::V8::SetCaptureStackTraceForUncaughtExceptions(value, ScriptCallStack::maxCallStackSizeToCapture, stackTraceOptions);
 }
 
 void ScriptController::collectIsolatedContexts(Vector<std::pair<ScriptState*, SecurityOrigin*> >& result)
 {
     v8::HandleScope handleScope(m_isolate);
     for (IsolatedWorldMap::iterator it = m_isolatedWorlds.begin(); it != m_isolatedWorlds.end(); ++it) {
         V8WindowShell* isolatedWorldShell = it->value.get();
-        SecurityOrigin* origin = isolatedWorldShell->world().isolatedWorldSecurityOrigin();
+        SecurityOrigin* origin = isolatedWorldShell->world()->isolatedWorldSecurityOrigin();
         if (!origin)
             continue;
         v8::Local<v8::Context> v8Context = isolatedWorldShell->context();
         if (v8Context.IsEmpty())
             continue;
         ScriptState* scriptState = ScriptState::forContext(v8Context);
         result.append(std::pair<ScriptState*, SecurityOrigin*>(scriptState, origin));
     }
 }
 
@@ skipping 145 matching lines @@
 
 void ScriptController::executeScriptInIsolatedWorld(int worldID, const Vector<ScriptSourceCode>& sources, int extensionGroup, Vector<ScriptValue>* results)
 {
     ASSERT(worldID > 0);
 
     v8::HandleScope handleScope(m_isolate);
     v8::Local<v8::Array> v8Results;
     {
         v8::EscapableHandleScope evaluateHandleScope(m_isolate);
         RefPtr<DOMWrapperWorld> world = DOMWrapperWorld::ensureIsolatedWorld(worldID, extensionGroup);
-        V8WindowShell* isolatedWorldShell = windowShell(*world);
+        V8WindowShell* isolatedWorldShell = windowShell(world.get());
 
         if (!isolatedWorldShell->isContextInitialized())
             return;
 
         v8::Local<v8::Context> context = isolatedWorldShell->context();
         v8::Context::Scope contextScope(context);
         v8::Local<v8::Array> resultArray = v8::Array::New(m_isolate, sources.size());
 
         for (size_t i = 0; i < sources.size(); ++i) {
             v8::Local<v8::Value> evaluationResult = executeScriptAndReturnValue(context, sources[i]);
             if (evaluationResult.IsEmpty())
                 evaluationResult = v8::Local<v8::Value>::New(m_isolate, v8::Undefined(m_isolate));
             resultArray->Set(i, evaluationResult);
         }
 
         v8Results = evaluateHandleScope.Escape(resultArray);
     }
 
     if (results && !v8Results.IsEmpty()) {
         for (size_t i = 0; i < v8Results->Length(); ++i)
             results->append(ScriptValue(v8Results->Get(i), m_isolate));
     }
 }
 
 } // namespace WebCore