12 files changed, 131 insertions, 135 deletions

diff --git a/src/script/bridge/qscriptactivationobject.cpp b/src/script/bridge/qscriptactivationobject.cpp
index fea8f44..7982982 100644
--- a/src/script/bridge/qscriptactivationobject.cpp
+++ b/src/script/bridge/qscriptactivationobject.cpp
@@ -88,13 +88,13 @@ bool QScriptActivationObject::getPropertyAttributes(JSC::ExecState* exec, const
     return JSC::JSVariableObject::getPropertyAttributes(exec, propertyName, attributes);
 }
 
-void QScriptActivationObject::getPropertyNames(JSC::ExecState* exec, JSC::PropertyNameArray& propertyNames, unsigned listedAttributes)
+void QScriptActivationObject::getOwnPropertyNames(JSC::ExecState* exec, JSC::PropertyNameArray& propertyNames, bool includeNonEnumerable)
 {
     if (d_ptr()->delegate != 0) {
-        d_ptr()->delegate->getPropertyNames(exec, propertyNames, listedAttributes);
+        d_ptr()->delegate->getOwnPropertyNames(exec, propertyNames, includeNonEnumerable);
         return;
     }
-    return JSC::JSVariableObject::getPropertyNames(exec, propertyNames, listedAttributes);
+    return JSC::JSVariableObject::getOwnPropertyNames(exec, propertyNames, includeNonEnumerable);
 }
 
 void QScriptActivationObject::putWithAttributes(JSC::ExecState *exec, const JSC::Identifier &propertyName, JSC::JSValue value, unsigned attributes)
diff --git a/src/script/bridge/qscriptactivationobject_p.h b/src/script/bridge/qscriptactivationobject_p.h
index f45845d..f313f90 100644
--- a/src/script/bridge/qscriptactivationobject_p.h
+++ b/src/script/bridge/qscriptactivationobject_p.h
@@ -70,7 +70,7 @@ public:
 
     virtual bool getOwnPropertySlot(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::PropertySlot&);
     virtual bool getPropertyAttributes(JSC::ExecState*, const JSC::Identifier&, unsigned&) const;
-    virtual void getPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&, unsigned listedAttributes = JSC::Structure::Prototype);
+    virtual void getOwnPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&, bool includeNonEnumerable = false);
 
     virtual void putWithAttributes(JSC::ExecState *exec, const JSC::Identifier &propertyName, JSC::JSValue value, unsigned attributes);
     virtual void put(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::JSValue value, JSC::PutPropertySlot&);
diff --git a/src/script/bridge/qscriptclassobject.cpp b/src/script/bridge/qscriptclassobject.cpp
index c1e386b..0d88532 100644
--- a/src/script/bridge/qscriptclassobject.cpp
+++ b/src/script/bridge/qscriptclassobject.cpp
@@ -188,9 +188,9 @@ bool ClassObjectDelegate::getPropertyAttributes(const QScriptObject* object, JSC
     return QScriptObjectDelegate::getPropertyAttributes(object, exec, propertyName, attribs);
 }
 
-void ClassObjectDelegate::getPropertyNames(QScriptObject* object, JSC::ExecState *exec,
-                                           JSC::PropertyNameArray &propertyNames,
-                                           unsigned listedAttributes)
+void ClassObjectDelegate::getOwnPropertyNames(QScriptObject* object, JSC::ExecState *exec,
+                                              JSC::PropertyNameArray &propertyNames,
+                                              bool includeNonEnumerable)
 {
     QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
     QScript::SaveFrameHelper saveFrame(engine, exec);
@@ -204,7 +204,7 @@ void ClassObjectDelegate::getPropertyNames(QScriptObject* object, JSC::ExecState
         }
         delete it;
     }
-    QScriptObjectDelegate::getPropertyNames(object, exec, propertyNames, listedAttributes);
+    QScriptObjectDelegate::getOwnPropertyNames(object, exec, propertyNames, includeNonEnumerable);
 }
 
 JSC::CallType ClassObjectDelegate::getCallData(QScriptObject*, JSC::CallData &callData)
diff --git a/src/script/bridge/qscriptclassobject_p.h b/src/script/bridge/qscriptclassobject_p.h
index 253e406..f5cce76 100644
--- a/src/script/bridge/qscriptclassobject_p.h
+++ b/src/script/bridge/qscriptclassobject_p.h
@@ -87,8 +87,9 @@ public:
     virtual bool getPropertyAttributes(const QScriptObject*, JSC::ExecState*,
                                        const JSC::Identifier&,
                                        unsigned&) const;
-    virtual void getPropertyNames(QScriptObject*, JSC::ExecState*,
-                                  JSC::PropertyNameArray&, unsigned listedAttributes = JSC::Structure::Prototype);
+    virtual void getOwnPropertyNames(QScriptObject*, JSC::ExecState*,
+                                     JSC::PropertyNameArray&,
+                                     bool includeNonEnumerable = false);
 
     virtual JSC::CallType getCallData(QScriptObject*, JSC::CallData&);
     static JSC::JSValue JSC_HOST_CALL call(JSC::ExecState*, JSC::JSObject*,
diff --git a/src/script/bridge/qscriptglobalobject.cpp b/src/script/bridge/qscriptglobalobject.cpp
index 17a96c3..c624a31 100644
--- a/src/script/bridge/qscriptglobalobject.cpp
+++ b/src/script/bridge/qscriptglobalobject.cpp
@@ -68,12 +68,11 @@ GlobalObject::~GlobalObject()
 {
 }
 
-void GlobalObject::mark()
+void GlobalObject::markChildren(JSC::MarkStack& markStack)
 {
-    Q_ASSERT(!marked());
-    JSC::JSGlobalObject::mark();
-    if (customGlobalObject && !customGlobalObject->marked())
-        customGlobalObject->mark();
+    JSC::JSGlobalObject::markChildren(markStack);
+    if (customGlobalObject)
+        markStack.append(customGlobalObject);
 }
 
 bool GlobalObject::getOwnPropertySlot(JSC::ExecState* exec,
@@ -125,28 +124,29 @@ bool GlobalObject::getPropertyAttributes(JSC::ExecState* exec, const JSC::Identi
     return JSC::JSGlobalObject::getPropertyAttributes(exec, propertyName, attributes);
 }
 
-void GlobalObject::getPropertyNames(JSC::ExecState* exec, JSC::PropertyNameArray& propertyNames, unsigned listedAttributes)
+void GlobalObject::getOwnPropertyNames(JSC::ExecState* exec, JSC::PropertyNameArray& propertyNames,
+                                       bool includeNonEnumerable)
 {
     if (customGlobalObject)
-        customGlobalObject->getPropertyNames(exec, propertyNames, listedAttributes);
+        customGlobalObject->getOwnPropertyNames(exec, propertyNames, includeNonEnumerable);
     else
-        JSC::JSGlobalObject::getPropertyNames(exec, propertyNames, listedAttributes);
+        JSC::JSGlobalObject::getOwnPropertyNames(exec, propertyNames, includeNonEnumerable);
 }
 
-void GlobalObject::defineGetter(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSObject* getterFunction)
+void GlobalObject::defineGetter(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSObject* getterFunction, unsigned attributes)
 {
     if (customGlobalObject)
-        customGlobalObject->defineGetter(exec, propertyName, getterFunction);
+        customGlobalObject->defineGetter(exec, propertyName, getterFunction, attributes);
     else
-        JSC::JSGlobalObject::defineGetter(exec, propertyName, getterFunction);
+        JSC::JSGlobalObject::defineGetter(exec, propertyName, getterFunction, attributes);
 }
 
-void GlobalObject::defineSetter(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSObject* setterFunction)
+void GlobalObject::defineSetter(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSObject* setterFunction, unsigned attributes)
 {
     if (customGlobalObject)
-        customGlobalObject->defineSetter(exec, propertyName, setterFunction);
+        customGlobalObject->defineSetter(exec, propertyName, setterFunction, attributes);
     else
-        JSC::JSGlobalObject::defineSetter(exec, propertyName, setterFunction);
+        JSC::JSGlobalObject::defineSetter(exec, propertyName, setterFunction, attributes);
 }
 
 JSC::JSValue GlobalObject::lookupGetter(JSC::ExecState* exec, const JSC::Identifier& propertyName)
diff --git a/src/script/bridge/qscriptglobalobject_p.h b/src/script/bridge/qscriptglobalobject_p.h
index 70458a7..01784c2 100644
--- a/src/script/bridge/qscriptglobalobject_p.h
+++ b/src/script/bridge/qscriptglobalobject_p.h
@@ -68,7 +68,7 @@ public:
     GlobalObject();
     virtual ~GlobalObject();
     virtual JSC::UString className() const { return "global"; }
-    virtual void mark();
+    virtual void markChildren(JSC::MarkStack&);
     virtual bool getOwnPropertySlot(JSC::ExecState*,
                                     const JSC::Identifier& propertyName,
                                     JSC::PropertySlot&);
@@ -81,10 +81,10 @@ public:
                                 bool checkDontDelete = true);
     virtual bool getPropertyAttributes(JSC::ExecState*, const JSC::Identifier&,
                                        unsigned&) const;
-    virtual void getPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&,
-                                  unsigned listedAttributes = JSC::Structure::Prototype);
-    virtual void defineGetter(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::JSObject* getterFunction);
-    virtual void defineSetter(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::JSObject* setterFunction);
+    virtual void getOwnPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&,
+                                     bool includeNonEnumerable = false);
+    virtual void defineGetter(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::JSObject* getterFunction, unsigned attributes = 0);
+    virtual void defineSetter(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::JSObject* setterFunction, unsigned attributes = 0);
     virtual JSC::JSValue lookupGetter(JSC::ExecState*, const JSC::Identifier& propertyName);
     virtual JSC::JSValue lookupSetter(JSC::ExecState*, const JSC::Identifier& propertyName);
 
@@ -103,12 +103,10 @@ public:
     {}
     virtual JSC::UString className() const
     { return originalGlobalObject->className(); }
-    virtual void mark()
+    virtual void markChildren(JSC::MarkStack& markStack)
     {
-        Q_ASSERT(!marked());
-        if (!originalGlobalObject->marked())
-            originalGlobalObject->JSC::JSGlobalObject::mark();
-        JSC::JSObject::mark();
+        markStack.append(originalGlobalObject);
+        JSC::JSObject::markChildren(markStack);
     }
     virtual bool getOwnPropertySlot(JSC::ExecState* exec,
                                     const JSC::Identifier& propertyName,
@@ -125,13 +123,12 @@ public:
     virtual bool getPropertyAttributes(JSC::ExecState* exec, const JSC::Identifier& propertyName,
                                        unsigned& attributes) const
     { return originalGlobalObject->JSC::JSGlobalObject::getPropertyAttributes(exec, propertyName, attributes); }
-    virtual void getPropertyNames(JSC::ExecState* exec, JSC::PropertyNameArray& propertyNames,
-                                  unsigned listedAttributes = JSC::Structure::Prototype)
-    { originalGlobalObject->JSC::JSGlobalObject::getPropertyNames(exec, propertyNames, listedAttributes); }
-    virtual void defineGetter(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSObject* getterFunction)
-    { originalGlobalObject->JSC::JSGlobalObject::defineGetter(exec, propertyName, getterFunction); }
-    virtual void defineSetter(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSObject* setterFunction)
-    { originalGlobalObject->JSC::JSGlobalObject::defineSetter(exec, propertyName, setterFunction); }
+    virtual void getOwnPropertyNames(JSC::ExecState* exec, JSC::PropertyNameArray& propertyNames, bool includeNonEnumerable = false)
+    { originalGlobalObject->JSC::JSGlobalObject::getOwnPropertyNames(exec, propertyNames, includeNonEnumerable); }
+    virtual void defineGetter(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSObject* getterFunction, unsigned attributes)
+    { originalGlobalObject->JSC::JSGlobalObject::defineGetter(exec, propertyName, getterFunction, attributes); }
+    virtual void defineSetter(JSC::ExecState* exec, const JSC::Identifier& propertyName, JSC::JSObject* setterFunction, unsigned attributes)
+    { originalGlobalObject->JSC::JSGlobalObject::defineSetter(exec, propertyName, setterFunction, attributes); }
     virtual JSC::JSValue lookupGetter(JSC::ExecState* exec, const JSC::Identifier& propertyName)
     { return originalGlobalObject->JSC::JSGlobalObject::lookupGetter(exec, propertyName); }
     virtual JSC::JSValue lookupSetter(JSC::ExecState* exec, const JSC::Identifier& propertyName)
diff --git a/src/script/bridge/qscriptobject.cpp b/src/script/bridge/qscriptobject.cpp
index 0807dc2..0d899f8 100644
--- a/src/script/bridge/qscriptobject.cpp
+++ b/src/script/bridge/qscriptobject.cpp
@@ -136,13 +136,14 @@ bool QScriptObject::getPropertyAttributes(JSC::ExecState* exec, const JSC::Ident
     return d->delegate->getPropertyAttributes(this, exec, propertyName, attributes);
 }
 
-void QScriptObject::getPropertyNames(JSC::ExecState* exec, JSC::PropertyNameArray& propertyNames, unsigned listedAttributes)
+void QScriptObject::getOwnPropertyNames(JSC::ExecState* exec, JSC::PropertyNameArray& propertyNames,
+                                        bool includeNonEnumerable)
 {
     if (!d || !d->delegate) {
-        JSC::JSObject::getPropertyNames(exec, propertyNames, listedAttributes);
+        JSC::JSObject::getOwnPropertyNames(exec, propertyNames, includeNonEnumerable);
         return;
     }
-    d->delegate->getPropertyNames(this, exec, propertyNames, listedAttributes);
+    d->delegate->getOwnPropertyNames(this, exec, propertyNames, includeNonEnumerable);
 }
 
 bool QScriptObject::compareToObject(JSC::ExecState* exec, JSC::JSObject *other)
@@ -153,22 +154,20 @@ bool QScriptObject::compareToObject(JSC::ExecState* exec, JSC::JSObject *other)
     return d->delegate->compareToObject(this, exec, other);
 }
 
-
-void QScriptObject::mark()
+void QScriptObject::markChildren(JSC::MarkStack& markStack)
 {
-    Q_ASSERT(!marked());
     if (!d)
         d = new Data();
     if (d->isMarking)
         return;
     QBoolBlocker markBlocker(d->isMarking, true);
-    if (d && d->data && !d->data.marked())
-        d->data.mark();
+    if (d && d->data)
+        markStack.append(d->data);
     if (!d || !d->delegate) {
-        JSC::JSObject::mark();
+        JSC::JSObject::markChildren(markStack);
         return;
     }
-    d->delegate->mark(this);
+    d->delegate->markChildren(this, markStack);
 }
 
 JSC::CallType QScriptObject::getCallData(JSC::CallData &data)
@@ -235,17 +234,17 @@ bool QScriptObjectDelegate::getPropertyAttributes(const QScriptObject* object,
     return object->JSC::JSObject::getPropertyAttributes(exec, propertyName, attributes);
 }
 
-void QScriptObjectDelegate::getPropertyNames(QScriptObject* object, JSC::ExecState* exec,
-                                             JSC::PropertyNameArray& propertyNames,
-                                             unsigned listedAttributes)
+void QScriptObjectDelegate::getOwnPropertyNames(QScriptObject* object, JSC::ExecState* exec,
+                                                JSC::PropertyNameArray& propertyNames,
+                                                bool includeNonEnumerable)
 {
-    object->JSC::JSObject::getPropertyNames(exec, propertyNames, listedAttributes);
+    object->JSC::JSObject::getOwnPropertyNames(exec, propertyNames, includeNonEnumerable);
 }
 
-void QScriptObjectDelegate::mark(QScriptObject* object)
+void QScriptObjectDelegate::markChildren(QScriptObject* object, JSC::MarkStack& markStack)
 {
-    if (!object->marked())
-        object->JSC::JSObject::mark();
+    // ### should this call the virtual function instead??
+    object->JSC::JSObject::markChildren(markStack);
 }
 
 JSC::CallType QScriptObjectDelegate::getCallData(QScriptObject* object, JSC::CallData& data)
diff --git a/src/script/bridge/qscriptobject_p.h b/src/script/bridge/qscriptobject_p.h
index 8060914..c1cee31 100644
--- a/src/script/bridge/qscriptobject_p.h
+++ b/src/script/bridge/qscriptobject_p.h
@@ -88,11 +88,13 @@ public:
                                 bool checkDontDelete = true);
     virtual bool getPropertyAttributes(JSC::ExecState*, const JSC::Identifier&,
                                        unsigned&) const;
-    virtual void getPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&, unsigned listedAttributes = JSC::Structure::Prototype);
-    virtual void mark();
+    virtual void getOwnPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&,
+                                     bool includeNonEnumerable = false);
+    virtual void markChildren(JSC::MarkStack& markStack);
     virtual JSC::CallType getCallData(JSC::CallData&);
     virtual JSC::ConstructType getConstructData(JSC::ConstructData&);
     virtual bool hasInstance(JSC::ExecState*, JSC::JSValue value, JSC::JSValue proto);
+    virtual bool compareToObject(JSC::ExecState*, JSC::JSObject*);
 
     virtual const JSC::ClassInfo* classInfo() const { return &info; }
     static const JSC::ClassInfo info;
@@ -108,8 +110,6 @@ public:
     QScriptObjectDelegate *delegate() const;
     void setDelegate(QScriptObjectDelegate *delegate);
 
-    virtual bool compareToObject(JSC::ExecState*, JSC::JSObject*);
-
 protected:
     Data *d;
 };
@@ -145,14 +145,13 @@ public:
                                 bool checkDontDelete = true);
     virtual bool getPropertyAttributes(const QScriptObject*, JSC::ExecState*,
                                        const JSC::Identifier&, unsigned&) const;
-    virtual void getPropertyNames(QScriptObject*, JSC::ExecState*, JSC::PropertyNameArray&,
-                                  unsigned listedAttributes = JSC::Structure::Prototype);
-    virtual void mark(QScriptObject*);
+    virtual void getOwnPropertyNames(QScriptObject*, JSC::ExecState*, JSC::PropertyNameArray&,
+                                     bool includeNonEnumerable = false);
+    virtual void markChildren(QScriptObject*, JSC::MarkStack& markStack);
     virtual JSC::CallType getCallData(QScriptObject*, JSC::CallData&);
     virtual JSC::ConstructType getConstructData(QScriptObject*, JSC::ConstructData&);
     virtual bool hasInstance(QScriptObject*, JSC::ExecState*,
                              JSC::JSValue value, JSC::JSValue proto);
-
     virtual bool compareToObject(QScriptObject*, JSC::ExecState*, JSC::JSObject*);
 
 private:
diff --git a/src/script/bridge/qscriptqobject.cpp b/src/script/bridge/qscriptqobject.cpp
index 236f899..345489f 100644
--- a/src/script/bridge/qscriptqobject.cpp
+++ b/src/script/bridge/qscriptqobject.cpp
@@ -99,11 +99,12 @@ struct QObjectConnection
         return (s == slot);
     }
 
-    void mark()
+    void mark(JSC::MarkStack& markStack)
     {
-        if (senderWrapper && !senderWrapper.marked()) {
+        // ### need to find out if senderWrapper is marked
+        if (senderWrapper) {
             // see if the sender should be marked or not
-            Q_ASSERT(senderWrapper.isObject(&QScriptObject::info));
+            Q_ASSERT(senderWrapper.inherits(&QScriptObject::info));
             QScriptObject *scriptObject = static_cast<QScriptObject*>(JSC::asObject(senderWrapper));
             QScriptObjectDelegate *delegate = scriptObject->delegate();
             Q_ASSERT(delegate && (delegate->type() == QScriptObjectDelegate::QtObject));
@@ -111,15 +112,17 @@ struct QObjectConnection
             if ((inst->ownership() == QScriptEngine::ScriptOwnership)
                 || ((inst->ownership() == QScriptEngine::AutoOwnership)
                     && inst->value() && !inst->value()->parent())) {
-                senderWrapper = JSC::JSValue();
+                // #### don't mark if not marked otherwise
+                //senderWrapper = JSC::JSValue();
+                markStack.append(senderWrapper);
             } else {
-                senderWrapper.mark();
+                markStack.append(senderWrapper);
             }
         }
-        if (receiver && !receiver.marked())
-            receiver.mark();
-        if (slot && !slot.marked())
-            slot.mark();
+        if (receiver)
+            markStack.append(receiver);
+        if (slot)
+            markStack.append(slot);
     }
 };
 
@@ -154,7 +157,7 @@ public:
 
     void execute(int slotIndex, void **argv);
 
-    void mark();
+    void mark(JSC::MarkStack&);
 
 private:
     QScriptEnginePrivate *engine;
@@ -264,12 +267,11 @@ JSC::CallType QtFunction::getCallData(JSC::CallData &callData)
     return JSC::CallTypeHost;
 }
 
-void QtFunction::mark()
+void QtFunction::markChildren(JSC::MarkStack& markStack)
 {
-    Q_ASSERT(!marked());
-    if (data->object && !data->object.marked())
-        data->object.mark();
-    JSC::InternalFunction::mark();
+    if (data->object)
+        markStack.append(data->object);
+    JSC::InternalFunction::markChildren(markStack);
 }
 
 QScriptObject *QtFunction::wrapperObject() const
@@ -988,7 +990,7 @@ static JSC::JSValue callQtMethod(JSC::ExecState *exec, QMetaMethod::MethodType c
 JSC::JSValue QtFunction::execute(JSC::ExecState *exec, JSC::JSValue thisValue,
                                  const JSC::ArgList &scriptArgs)
 {
-    Q_ASSERT(data->object.isObject(&QScriptObject::info));
+    Q_ASSERT(data->object.inherits(&QScriptObject::info));
     QScriptObject *scriptObject = static_cast<QScriptObject*>(JSC::asObject(data->object));
     QScriptObjectDelegate *delegate = scriptObject->delegate();
     Q_ASSERT(delegate && (delegate->type() == QScriptObjectDelegate::QtObject));
@@ -999,7 +1001,7 @@ JSC::JSValue QtFunction::execute(JSC::ExecState *exec, JSC::JSValue thisValue,
     const QMetaObject *meta = qobj->metaObject();
     QObject *thisQObject = 0;
     thisValue = engine->toUsableValue(thisValue);
-    if (thisValue.isObject(&QScriptObject::info)) {
+    if (thisValue.inherits(&QScriptObject::info)) {
         delegate = static_cast<QScriptObject*>(JSC::asObject(thisValue))->delegate();
         if (delegate && (delegate->type() == QScriptObjectDelegate::QtObject))
             thisQObject = static_cast<QScript::QObjectDelegate*>(delegate)->value();
@@ -1511,9 +1513,9 @@ bool QObjectDelegate::getPropertyAttributes(const QScriptObject *object,
     return QScriptObjectDelegate::getPropertyAttributes(object, exec, propertyName, attributes);
 }
 
-void QObjectDelegate::getPropertyNames(QScriptObject *object, JSC::ExecState *exec,
-                                       JSC::PropertyNameArray &propertyNames,
-                                       unsigned listedAttributes)
+void QObjectDelegate::getOwnPropertyNames(QScriptObject *object, JSC::ExecState *exec,
+                                          JSC::PropertyNameArray &propertyNames,
+                                          bool includeNonEnumerable)
 {
     QObject *qobject = data->value;
     if (!qobject) {
@@ -1557,24 +1559,24 @@ void QObjectDelegate::getPropertyNames(QScriptObject *object, JSC::ExecState *ex
         }
     }
 
-    QScriptObjectDelegate::getPropertyNames(object, exec, propertyNames, listedAttributes);
+    QScriptObjectDelegate::getOwnPropertyNames(object, exec, propertyNames, includeNonEnumerable);
 }
 
-void QObjectDelegate::mark(QScriptObject *object)
+void QObjectDelegate::markChildren(QScriptObject *object, JSC::MarkStack& markStack)
 {
     QHash<QByteArray, JSC::JSValue>::const_iterator it;
     for (it = data->cachedMembers.constBegin(); it != data->cachedMembers.constEnd(); ++it) {
         JSC::JSValue val = it.value();
-        if (val && !val.marked())
-            val.mark();
+        if (val)
+            markStack.append(val);
     }
 
-    QScriptObjectDelegate::mark(object);
+    QScriptObjectDelegate::markChildren(object, markStack);
 }
 
 bool QObjectDelegate::compareToObject(QScriptObject *, JSC::ExecState *exec, JSC::JSObject *o2)
 {
-    if(!o2->inherits(&QScriptObject::info))
+    if (!o2->inherits(&QScriptObject::info))
         return false;
     QScriptObject *object = static_cast<QScriptObject*>(o2);
     QScriptObjectDelegate *delegate = object->delegate();
@@ -1583,13 +1585,12 @@ bool QObjectDelegate::compareToObject(QScriptObject *, JSC::ExecState *exec, JSC
     return value() == static_cast<QObjectDelegate *>(delegate)->value();
 }
 
-
 static JSC::JSValue JSC_HOST_CALL qobjectProtoFuncFindChild(JSC::ExecState *exec, JSC::JSObject*,
                                                             JSC::JSValue thisValue, const JSC::ArgList &args)
 {
     QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
     thisValue = engine->toUsableValue(thisValue);
-    if (!thisValue.isObject(&QScriptObject::info))
+    if (!thisValue.inherits(&QScriptObject::info))
         return throwError(exec, JSC::TypeError, "this object is not a QObject");
     QScriptObject *scriptObject = static_cast<QScriptObject*>(JSC::asObject(thisValue));
     QScriptObjectDelegate *delegate = scriptObject->delegate();
@@ -1610,7 +1611,7 @@ static JSC::JSValue JSC_HOST_CALL qobjectProtoFuncFindChildren(JSC::ExecState *e
     QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
     thisValue = engine->toUsableValue(thisValue);
     // extract the QObject
-    if (!thisValue.isObject(&QScriptObject::info))
+    if (!thisValue.inherits(&QScriptObject::info))
         return throwError(exec, JSC::TypeError, "this object is not a QObject");
     QScriptObject *scriptObject = static_cast<QScriptObject*>(JSC::asObject(thisValue));
     QScriptObjectDelegate *delegate = scriptObject->delegate();
@@ -1622,7 +1623,7 @@ static JSC::JSValue JSC_HOST_CALL qobjectProtoFuncFindChildren(JSC::ExecState *e
     QList<QObject *> children;
     if (args.size() != 0) {
         const JSC::JSValue arg = args.at(0);
-        if (arg.isObject(&JSC::RegExpObject::info)) {
+        if (arg.inherits(&JSC::RegExpObject::info)) {
             const QObjectList allChildren= obj->children();
 
             JSC::RegExpObject *const regexp = JSC::asRegExpObject(arg);
@@ -1662,7 +1663,7 @@ static JSC::JSValue JSC_HOST_CALL qobjectProtoFuncToString(JSC::ExecState *exec,
 {
     QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
     thisValue = engine->toUsableValue(thisValue);
-    if (!thisValue.isObject(&QScriptObject::info))
+    if (!thisValue.inherits(&QScriptObject::info))
         return JSC::jsUndefined();
     QScriptObject *scriptObject = static_cast<QScriptObject*>(JSC::asObject(thisValue));
     QScriptObjectDelegate *delegate = scriptObject->delegate();
@@ -1807,7 +1808,9 @@ bool QMetaObjectWrapperObject::getPropertyAttributes(JSC::ExecState *exec,
     return JSC::JSObject::getPropertyAttributes(exec, propertyName, attributes);
 }
 
-void QMetaObjectWrapperObject::getPropertyNames(JSC::ExecState *exec, JSC::PropertyNameArray &propertyNames, unsigned listedAttributes)
+void QMetaObjectWrapperObject::getOwnPropertyNames(JSC::ExecState *exec,
+                                                   JSC::PropertyNameArray &propertyNames,
+                                                   bool includeNonEnumerable)
 {
     const QMetaObject *meta = data->value;
     if (!meta)
@@ -1817,17 +1820,16 @@ void QMetaObjectWrapperObject::getPropertyNames(JSC::ExecState *exec, JSC::Prope
         for (int j = 0; j < e.keyCount(); ++j)
             propertyNames.add(JSC::Identifier(exec, e.key(j)));
     }
-    JSC::JSObject::getPropertyNames(exec, propertyNames, listedAttributes);
+    JSC::JSObject::getOwnPropertyNames(exec, propertyNames, includeNonEnumerable);
 }
 
-void QMetaObjectWrapperObject::mark()
+void QMetaObjectWrapperObject::markChildren(JSC::MarkStack& markStack)
 {
-    Q_ASSERT(!marked());
-    if (data->ctor && !data->ctor.marked())
-        data->ctor.mark();
-    if (data->prototype && !data->prototype.marked())
-        data->prototype.mark();
-    JSC::JSObject::mark();
+    if (data->ctor)
+        markStack.append(data->ctor);
+    if (data->prototype)
+        markStack.append(data->prototype);
+    JSC::JSObject::markChildren(markStack);
 }
 
 JSC::CallType QMetaObjectWrapperObject::getCallData(JSC::CallData& callData)
@@ -1883,12 +1885,12 @@ JSC::JSValue QMetaObjectWrapperObject::execute(JSC::ExecState *exec,
         JSC::CallType callType = data->ctor.getCallData(callData);
         Q_UNUSED(callType);
         Q_ASSERT_X(callType == JSC::CallTypeHost, Q_FUNC_INFO, "script constructors not supported");
-        if (data->ctor.isObject(&FunctionWithArgWrapper::info)) {
+        if (data->ctor.inherits(&FunctionWithArgWrapper::info)) {
             FunctionWithArgWrapper *wrapper = static_cast<FunctionWithArgWrapper*>(JSC::asObject(data->ctor));
             QScriptValue result = wrapper->function()(ctx, QScriptEnginePrivate::get(eng_p), wrapper->arg());
             return eng_p->scriptValueToJSCValue(result);
         } else {
-            Q_ASSERT(data->ctor.isObject(&FunctionWrapper::info));
+            Q_ASSERT(data->ctor.inherits(&FunctionWrapper::info));
             FunctionWrapper *wrapper = static_cast<FunctionWrapper*>(JSC::asObject(data->ctor));
             QScriptValue result = wrapper->function()(ctx, QScriptEnginePrivate::get(eng_p));
             return eng_p->scriptValueToJSCValue(result);
@@ -1899,7 +1901,7 @@ JSC::JSValue QMetaObjectWrapperObject::execute(JSC::ExecState *exec,
             JSC::JSValue result = callQtMethod(exec, QMetaMethod::Constructor, /*thisQObject=*/0,
                                                args, meta, meta->constructorCount()-1, /*maybeOverloaded=*/true);
             if (!exec->hadException()) {
-                Q_ASSERT(result && result.isObject(&QScriptObject::info));
+                Q_ASSERT(result && result.inherits(&QScriptObject::info));
                 QScriptObject *object = static_cast<QScriptObject*>(JSC::asObject(result));
                 QScript::QObjectDelegate *delegate = static_cast<QScript::QObjectDelegate*>(object->delegate());
                 delegate->setOwnership(QScriptEngine::AutoOwnership);
@@ -1926,7 +1928,7 @@ static JSC::JSValue JSC_HOST_CALL qmetaobjectProtoFuncClassName(
 {
     QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
     thisValue = engine->toUsableValue(thisValue);
-    if (!thisValue.isObject(&QMetaObjectWrapperObject::info))
+    if (!thisValue.inherits(&QMetaObjectWrapperObject::info))
         return throwError(exec, JSC::TypeError, "this object is not a QMetaObject");
     const QMetaObject *meta = static_cast<QMetaObjectWrapperObject*>(JSC::asObject(thisValue))->value();
     return JSC::jsString(exec, meta->className());
@@ -2060,7 +2062,7 @@ void QObjectConnectionManager::execute(int slotIndex, void **argv)
     JSC::ArgList jscArgs(argsVector.data(), argsVector.size());
 
     JSC::JSValue senderObject;
-    if (senderWrapper && senderWrapper.isObject(&QScriptObject::info)) // ### check if it's actually a QObject wrapper
+    if (senderWrapper && senderWrapper.inherits(&QScriptObject::info)) // ### check if it's actually a QObject wrapper
         senderObject = senderWrapper;
     else {
         QScriptEngine::QObjectWrapOptions opt = QScriptEngine::PreferExistingWrapperObject;
@@ -2093,12 +2095,12 @@ QObjectConnectionManager::~QObjectConnectionManager()
 {
 }
 
-void QObjectConnectionManager::mark()
+void QObjectConnectionManager::mark(JSC::MarkStack& markStack)
 {
     for (int i = 0; i < connections.size(); ++i) {
         QVector<QObjectConnection> &cs = connections[i];
         for (int j = 0; j < cs.size(); ++j)
-            cs[j].mark();
+            cs[j].mark(markStack);
     }
 }
 
@@ -2162,19 +2164,18 @@ QObjectData::~QObjectData()
     }
 }
 
-void QObjectData::mark()
+void QObjectData::mark(JSC::MarkStack& markStack)
 {
     if (connectionManager)
-        connectionManager->mark();
+        connectionManager->mark(markStack);
     {
         QList<QScript::QObjectWrapperInfo>::iterator it;
         for (it = wrappers.begin(); it != wrappers.end(); ) {
             const QScript::QObjectWrapperInfo &info = *it;
-            if (info.object->marked()) {
-                ++it;
-            } else {
-                it = wrappers.erase(it);
-            }
+            // ### don't mark if there are no other references.
+            // we need something like isMarked()
+            markStack.append(info.object);
+            ++it;
         }
     }
 }
diff --git a/src/script/bridge/qscriptqobject_p.h b/src/script/bridge/qscriptqobject_p.h
index 72d066d..2d482cc 100644
--- a/src/script/bridge/qscriptqobject_p.h
+++ b/src/script/bridge/qscriptqobject_p.h
@@ -105,9 +105,11 @@ public:
     virtual bool getPropertyAttributes(const QScriptObject*, JSC::ExecState*,
                                        const JSC::Identifier&,
                                        unsigned&) const;
-    virtual void getPropertyNames(QScriptObject*, JSC::ExecState*, JSC::PropertyNameArray&,
-                                  unsigned listedAttributes = JSC::Structure::Prototype);
-    virtual void mark(QScriptObject*);
+    virtual void getOwnPropertyNames(QScriptObject*, JSC::ExecState*,
+                                     JSC::PropertyNameArray&,
+                                     bool includeNonEnumerable = false);
+    virtual void markChildren(QScriptObject*, JSC::MarkStack& markStack);
+    virtual bool compareToObject(QScriptObject*, JSC::ExecState*, JSC::JSObject*);
 
     inline QObject *value() const { return data->value; }
     inline void setValue(QObject* value) { data->value = value; }
@@ -122,8 +124,6 @@ public:
     inline void setOptions(QScriptEngine::QObjectWrapOptions options)
         { data->options = options; }
 
-    virtual bool compareToObject(QScriptObject*, JSC::ExecState*, JSC::JSObject*);
-
 protected:
     Data *data;
 };
@@ -181,7 +181,7 @@ public:
                          QScriptEngine::ValueOwnership ownership,
                          const QScriptEngine::QObjectWrapOptions &options);
 
-    void mark();
+    void mark(JSC::MarkStack&);
 
 private:
     QScriptEnginePrivate *engine;
@@ -208,7 +208,7 @@ public:
     virtual ~QtFunction();
 
     virtual JSC::CallType getCallData(JSC::CallData&);
-    virtual void mark();
+    virtual void markChildren(JSC::MarkStack&);
 
     virtual const JSC::ClassInfo* classInfo() const { return &info; }
     static const JSC::ClassInfo info;
@@ -297,9 +297,9 @@ public:
                                 bool checkDontDelete = true);
     virtual bool getPropertyAttributes(JSC::ExecState*, const JSC::Identifier&,
                                        unsigned&) const;
-    virtual void getPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&,
-                                  unsigned listedAttributes = JSC::Structure::Prototype);
-    virtual void mark();
+    virtual void getOwnPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&,
+                                     bool includeNonEnumerable = false);
+    virtual void markChildren(JSC::MarkStack& markStack);
 
     virtual JSC::CallType getCallData(JSC::CallData&);
     virtual JSC::ConstructType getConstructData(JSC::ConstructData&);
diff --git a/src/script/bridge/qscriptvariant.cpp b/src/script/bridge/qscriptvariant.cpp
index aa7ad94..725f4e0 100644
--- a/src/script/bridge/qscriptvariant.cpp
+++ b/src/script/bridge/qscriptvariant.cpp
@@ -89,7 +89,7 @@ static JSC::JSValue JSC_HOST_CALL variantProtoFuncValueOf(JSC::ExecState *exec,
 {
     QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
     thisValue = engine->toUsableValue(thisValue);
-    if (!thisValue.isObject(&QScriptObject::info))
+    if (!thisValue.inherits(&QScriptObject::info))
         return throwError(exec, JSC::TypeError);
     QScriptObjectDelegate *delegate = static_cast<QScriptObject*>(JSC::asObject(thisValue))->delegate();
     if (!delegate || (delegate->type() != QScriptObjectDelegate::Variant))
@@ -127,7 +127,7 @@ static JSC::JSValue JSC_HOST_CALL variantProtoFuncToString(JSC::ExecState *exec,
 {
     QScriptEnginePrivate *engine = scriptEngineFromExec(exec);
     thisValue = engine->toUsableValue(thisValue);
-    if (!thisValue.isObject(&QScriptObject::info))
+    if (!thisValue.inherits(&QScriptObject::info))
         return throwError(exec, JSC::TypeError, "This object is not a QVariant");
     QScriptObjectDelegate *delegate = static_cast<QScriptObject*>(JSC::asObject(thisValue))->delegate();
     if (!delegate || (delegate->type() != QScriptObjectDelegate::Variant))
@@ -154,7 +154,6 @@ bool QVariantDelegate::compareToObject(QScriptObject *, JSC::ExecState *exec, JS
     return variant1 == scriptEngineFromExec(exec)->scriptValueFromJSCValue(o2).toVariant();
 }
 
-
 QVariantPrototype::QVariantPrototype(JSC::ExecState* exec, WTF::PassRefPtr<JSC::Structure> structure,
                                      JSC::Structure* prototypeFunctionStructure)
     : QScriptObject(structure)
diff --git a/src/script/bridge/qscriptvariant_p.h b/src/script/bridge/qscriptvariant_p.h
index 4ce0aa6..445ca69 100644
--- a/src/script/bridge/qscriptvariant_p.h
+++ b/src/script/bridge/qscriptvariant_p.h
@@ -68,13 +68,13 @@ public:
     QVariantDelegate(const QVariant &value);
     ~QVariantDelegate();
 
+    virtual bool compareToObject(QScriptObject*, JSC::ExecState*, JSC::JSObject*);
+
     QVariant &value();
     void setValue(const QVariant &value);
 
     Type type() const;
 
-    bool compareToObject(QScriptObject*, JSC::ExecState*, JSC::JSObject*);
-
 private:
     QVariant m_value;
 };