diff --git a/src/libs/qmljs/qmljscheck.cpp b/src/libs/qmljs/qmljscheck.cpp
index 88792c9c029..e3d55efef18 100644
--- a/src/libs/qmljs/qmljscheck.cpp
+++ b/src/libs/qmljs/qmljscheck.cpp
@@ -81,7 +81,7 @@ public:
 
     virtual void visit(const NumberValue *value)
     {
-        if (const QmlEnumValue *enumValue = dynamic_cast<const QmlEnumValue *>(value)) {
+        if (const QmlEnumValue *enumValue = value_cast<QmlEnumValue>(value)) {
             if (StringLiteral *stringLiteral = cast<StringLiteral *>(_ast)) {
                 const QString valueName = stringLiteral->value.toString();
 
@@ -643,7 +643,7 @@ void Check::visitQmlObject(Node *ast, UiQualifiedId *typeId,
             const ObjectValue *lastPrototype = prototypes.last();
             if (iter.error() == PrototypeIterator::ReferenceResolutionError) {
                 if (const QmlPrototypeReference *ref =
-                        dynamic_cast<const QmlPrototypeReference *>(lastPrototype->prototype())) {
+                        value_cast<QmlPrototypeReference>(lastPrototype->prototype())) {
                     addMessage(ErrCouldNotResolvePrototypeOf, typeErrorLocation,
                                toString(ref->qmlTypeName()), lastPrototype->className());
                 } else {
@@ -778,7 +778,7 @@ bool Check::visit(IdentifierExpression *)
 //        _lastValue = evaluator.reference(ast);
 //        if (!_lastValue)
 //            addMessage(ErrUnknownIdentifier, ast->identifierToken);
-//        if (const Reference *ref = value_cast<const Reference *>(_lastValue)) {
+//        if (const Reference *ref = value_cast<Reference>(_lastValue)) {
 //            _lastValue = _context->lookupReference(ref);
 //            if (!_lastValue)
 //                error(ast->identifierToken, tr("could not resolve"));
@@ -1293,7 +1293,7 @@ const Value *Check::checkScopeObjectMember(const UiQualifiedId *id)
     // member lookup
     const UiQualifiedId *idPart = id;
     while (idPart->next) {
-        const ObjectValue *objectValue = value_cast<const ObjectValue *>(value);
+        const ObjectValue *objectValue = value_cast<ObjectValue>(value);
         if (! objectValue) {
             addMessage(ErrDoesNotHaveMembers, idPart->identifierToken, propertyName);
             return 0;
diff --git a/src/libs/qmljs/qmljscontext.cpp b/src/libs/qmljs/qmljscontext.cpp
index c52471d64d2..648702b1111 100644
--- a/src/libs/qmljs/qmljscontext.cpp
+++ b/src/libs/qmljs/qmljscontext.cpp
@@ -134,11 +134,11 @@ QString Context::defaultPropertyName(const ObjectValue *object) const
     PrototypeIterator iter(object, this);
     while (iter.hasNext()) {
         const ObjectValue *o = iter.next();
-        if (const ASTObjectValue *astObjValue = dynamic_cast<const ASTObjectValue *>(o)) {
+        if (const ASTObjectValue *astObjValue = value_cast<ASTObjectValue>(o)) {
             QString defaultProperty = astObjValue->defaultPropertyName();
             if (!defaultProperty.isEmpty())
                 return defaultProperty;
-        } else if (const CppComponentValue *qmlValue = dynamic_cast<const CppComponentValue *>(o)) {
+        } else if (const CppComponentValue *qmlValue = value_cast<CppComponentValue>(o)) {
             return qmlValue->defaultPropertyName();
         }
     }
@@ -151,7 +151,7 @@ ReferenceContext::ReferenceContext(const ContextPtr &context)
 
 const Value *ReferenceContext::lookupReference(const Value *value)
 {
-    const Reference *reference = value_cast<const Reference *>(value);
+    const Reference *reference = value_cast<Reference>(value);
     if (!reference)
         return value;
 
diff --git a/src/libs/qmljs/qmljsevaluate.cpp b/src/libs/qmljs/qmljsevaluate.cpp
index bbb9f021ef7..501636e7e91 100644
--- a/src/libs/qmljs/qmljsevaluate.cpp
+++ b/src/libs/qmljs/qmljsevaluate.cpp
@@ -62,7 +62,7 @@ const Value *Evaluate::value(AST::Node *ast)
 {
     const Value *result = reference(ast);
 
-    if (const Reference *ref = value_cast<const Reference *>(result)) {
+    if (const Reference *ref = value_cast<Reference>(result)) {
         if (_referenceContext)
             result = _referenceContext->lookupReference(ref);
         else
@@ -176,7 +176,7 @@ bool Evaluate::visit(AST::UiQualifiedId *ast)
         _result = value;
 
     } else {
-        const ObjectValue *base = value_cast<const ObjectValue *>(value);
+        const ObjectValue *base = value_cast<ObjectValue>(value);
 
         for (AST::UiQualifiedId *it = ast->next; base && it; it = it->next) {
             const QString &name = it->name.toString();
@@ -187,7 +187,7 @@ bool Evaluate::visit(AST::UiQualifiedId *ast)
             if (! it->next)
                 _result = value;
             else
-                base = value_cast<const ObjectValue *>(value);
+                base = value_cast<ObjectValue>(value);
         }
     }
 
@@ -328,7 +328,7 @@ bool Evaluate::visit(AST::FieldMemberExpression *ast)
 
 bool Evaluate::visit(AST::NewMemberExpression *ast)
 {
-    if (const FunctionValue *ctor = value_cast<const FunctionValue *>(value(ast->base))) {
+    if (const FunctionValue *ctor = value_cast<FunctionValue>(value(ast->base))) {
         _result = ctor->construct();
     }
     return false;
@@ -336,7 +336,7 @@ bool Evaluate::visit(AST::NewMemberExpression *ast)
 
 bool Evaluate::visit(AST::NewExpression *ast)
 {
-    if (const FunctionValue *ctor = value_cast<const FunctionValue *>(value(ast->expression))) {
+    if (const FunctionValue *ctor = value_cast<FunctionValue>(value(ast->expression))) {
         _result = ctor->construct();
     }
     return false;
diff --git a/src/libs/qmljs/qmljsinterpreter.cpp b/src/libs/qmljs/qmljsinterpreter.cpp
index 6679001d28d..ae70d5d39e0 100644
--- a/src/libs/qmljs/qmljsinterpreter.cpp
+++ b/src/libs/qmljs/qmljsinterpreter.cpp
@@ -193,6 +193,11 @@ static QString generatedSlotName(const QString &base)
     return slotName;
 }
 
+const CppComponentValue *CppComponentValue::asCppComponentValue() const
+{
+    return this;
+}
+
 void CppComponentValue::processMembers(MemberProcessor *processor) const
 {
     // process the meta enums
@@ -337,7 +342,7 @@ const Value *CppComponentValue::valueForCppName(const QString &typeName) const
 
 const CppComponentValue *CppComponentValue::prototype() const
 {
-    Q_ASSERT(!_prototype || dynamic_cast<const CppComponentValue *>(_prototype));
+    Q_ASSERT(!_prototype || value_cast<CppComponentValue>(_prototype));
     return static_cast<const CppComponentValue *>(_prototype);
 }
 
@@ -522,6 +527,11 @@ QmlEnumValue::~QmlEnumValue()
 {
 }
 
+const QmlEnumValue *QmlEnumValue::asQmlEnumValue() const
+{
+    return this;
+}
+
 QString QmlEnumValue::name() const
 {
     return _owner->metaObject()->enumerator(_enumIndex).name();
@@ -669,6 +679,31 @@ const AnchorLineValue *Value::asAnchorLineValue() const
     return 0;
 }
 
+const CppComponentValue *Value::asCppComponentValue() const
+{
+    return 0;
+}
+
+const ASTObjectValue *Value::asAstObjectValue() const
+{
+    return 0;
+}
+
+const QmlEnumValue *Value::asQmlEnumValue() const
+{
+    return 0;
+}
+
+const QmlPrototypeReference *Value::asQmlPrototypeReference() const
+{
+    return 0;
+}
+
+const ASTPropertyReference *Value::asAstPropertyReference() const
+{
+    return 0;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Values
 ////////////////////////////////////////////////////////////////////////////////
@@ -853,10 +888,10 @@ const Value *ObjectValue::prototype() const
 
 const ObjectValue *ObjectValue::prototype(const Context *context) const
 {
-    const ObjectValue *prototypeObject = value_cast<const ObjectValue *>(_prototype);
+    const ObjectValue *prototypeObject = value_cast<ObjectValue>(_prototype);
     if (! prototypeObject) {
-        if (const Reference *prototypeReference = value_cast<const Reference *>(_prototype)) {
-            prototypeObject = value_cast<const ObjectValue *>(context->lookupReference(prototypeReference));
+        if (const Reference *prototypeReference = value_cast<Reference>(_prototype)) {
+            prototypeObject = value_cast<ObjectValue>(context->lookupReference(prototypeReference));
         }
     }
     return prototypeObject;
@@ -981,9 +1016,9 @@ bool PrototypeIterator::hasNext()
     if (!proto)
         return false;
 
-    m_next = value_cast<const ObjectValue *>(proto);
+    m_next = value_cast<ObjectValue>(proto);
     if (! m_next)
-        m_next = value_cast<const ObjectValue *>(m_context->lookupReference(proto));
+        m_next = value_cast<ObjectValue>(m_context->lookupReference(proto));
     if (!m_next) {
         m_error = ReferenceResolutionError;
         return false;
@@ -1480,15 +1515,15 @@ void ConvertToNumber::visit(const StringValue *)
 
 void ConvertToNumber::visit(const ObjectValue *object)
 {
-    if (const FunctionValue *valueOfMember = value_cast<const FunctionValue *>(object->lookupMember("valueOf", ContextPtr()))) {
-        _result = value_cast<const NumberValue *>(valueOfMember->call(object)); // ### invoke convert-to-number?
+    if (const FunctionValue *valueOfMember = value_cast<FunctionValue>(object->lookupMember("valueOf", ContextPtr()))) {
+        _result = value_cast<NumberValue>(valueOfMember->call(object)); // ### invoke convert-to-number?
     }
 }
 
 void ConvertToNumber::visit(const FunctionValue *object)
 {
-    if (const FunctionValue *valueOfMember = value_cast<const FunctionValue *>(object->lookupMember("valueOf", ContextPtr()))) {
-        _result = value_cast<const NumberValue *>(valueOfMember->call(object)); // ### invoke convert-to-number?
+    if (const FunctionValue *valueOfMember = value_cast<FunctionValue>(object->lookupMember("valueOf", ContextPtr()))) {
+        _result = value_cast<NumberValue>(valueOfMember->call(object)); // ### invoke convert-to-number?
     }
 }
 
@@ -1541,15 +1576,15 @@ void ConvertToString::visit(const StringValue *value)
 
 void ConvertToString::visit(const ObjectValue *object)
 {
-    if (const FunctionValue *toStringMember = value_cast<const FunctionValue *>(object->lookupMember("toString", ContextPtr()))) {
-        _result = value_cast<const StringValue *>(toStringMember->call(object)); // ### invoke convert-to-string?
+    if (const FunctionValue *toStringMember = value_cast<FunctionValue>(object->lookupMember("toString", ContextPtr()))) {
+        _result = value_cast<StringValue>(toStringMember->call(object)); // ### invoke convert-to-string?
     }
 }
 
 void ConvertToString::visit(const FunctionValue *object)
 {
-    if (const FunctionValue *toStringMember = value_cast<const FunctionValue *>(object->lookupMember("toString", ContextPtr()))) {
-        _result = value_cast<const StringValue *>(toStringMember->call(object)); // ### invoke convert-to-string?
+    if (const FunctionValue *toStringMember = value_cast<FunctionValue>(object->lookupMember("toString", ContextPtr()))) {
+        _result = value_cast<StringValue>(toStringMember->call(object)); // ### invoke convert-to-string?
     }
 }
 
@@ -1705,6 +1740,11 @@ ASTObjectValue::~ASTObjectValue()
 {
 }
 
+const ASTObjectValue *ASTObjectValue::asAstObjectValue() const
+{
+    return this;
+}
+
 bool ASTObjectValue::getSourceLocation(QString *fileName, int *line, int *column) const
 {
     *fileName = _doc->fileName();
@@ -1856,6 +1896,11 @@ QmlPrototypeReference::~QmlPrototypeReference()
 {
 }
 
+const QmlPrototypeReference *QmlPrototypeReference::asQmlPrototypeReference() const
+{
+    return this;
+}
+
 UiQualifiedId *QmlPrototypeReference::qmlTypeName() const
 {
     return _qmlTypeName;
@@ -1878,6 +1923,11 @@ ASTPropertyReference::~ASTPropertyReference()
 {
 }
 
+const ASTPropertyReference *ASTPropertyReference::asAstPropertyReference() const
+{
+    return this;
+}
+
 bool ASTPropertyReference::getSourceLocation(QString *fileName, int *line, int *column) const
 {
     *fileName = _doc->fileName();
diff --git a/src/libs/qmljs/qmljsinterpreter.h b/src/libs/qmljs/qmljsinterpreter.h
index 513fe6b045f..283006adf46 100644
--- a/src/libs/qmljs/qmljsinterpreter.h
+++ b/src/libs/qmljs/qmljsinterpreter.h
@@ -75,6 +75,11 @@ class JSImportScope;
 class Context;
 typedef QSharedPointer<const Context> ContextPtr;
 class ReferenceContext;
+class CppComponentValue;
+class ASTObjectValue;
+class QmlEnumValue;
+class QmlPrototypeReference;
+class ASTPropertyReference;
 
 typedef QList<const Value *> ValueList;
 
@@ -124,13 +129,18 @@ public:
     virtual const Reference *asReference() const;
     virtual const ColorValue *asColorValue() const;
     virtual const AnchorLineValue *asAnchorLineValue() const;
+    virtual const CppComponentValue *asCppComponentValue() const;
+    virtual const ASTObjectValue *asAstObjectValue() const;
+    virtual const QmlEnumValue *asQmlEnumValue() const;
+    virtual const QmlPrototypeReference *asQmlPrototypeReference() const;
+    virtual const ASTPropertyReference *asAstPropertyReference() const;
 
     virtual void accept(ValueVisitor *) const = 0;
 
     virtual bool getSourceLocation(QString *fileName, int *line, int *column) const;
 };
 
-template <typename _RetTy> _RetTy value_cast(const Value *v);
+template <typename _RetTy> const _RetTy *value_cast(const Value *v);
 
 template <> Q_INLINE_TEMPLATE const NullValue *value_cast(const Value *v)
 {
@@ -210,6 +220,36 @@ template <> Q_INLINE_TEMPLATE const AnchorLineValue *value_cast(const Value *v)
     else   return 0;
 }
 
+template <> Q_INLINE_TEMPLATE const CppComponentValue *value_cast(const Value *v)
+{
+    if (v) return v->asCppComponentValue();
+    else   return 0;
+}
+
+template <> Q_INLINE_TEMPLATE const ASTObjectValue *value_cast(const Value *v)
+{
+    if (v) return v->asAstObjectValue();
+    else   return 0;
+}
+
+template <> Q_INLINE_TEMPLATE const QmlEnumValue *value_cast(const Value *v)
+{
+    if (v) return v->asQmlEnumValue();
+    else   return 0;
+}
+
+template <> Q_INLINE_TEMPLATE const QmlPrototypeReference *value_cast(const Value *v)
+{
+    if (v) return v->asQmlPrototypeReference();
+    else   return 0;
+}
+
+template <> Q_INLINE_TEMPLATE const ASTPropertyReference *value_cast(const Value *v)
+{
+    if (v) return v->asAstPropertyReference();
+    else   return 0;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Value nodes
 ////////////////////////////////////////////////////////////////////////////////
@@ -394,14 +434,14 @@ private:
     Error m_error;
 };
 
-class CppComponentValue;
-
 class QMLJS_EXPORT QmlEnumValue: public NumberValue
 {
 public:
     QmlEnumValue(const CppComponentValue *owner, int index);
     virtual ~QmlEnumValue();
 
+    virtual const QmlEnumValue *asQmlEnumValue() const;
+
     QString name() const;
     QStringList keys() const;
     const CppComponentValue *owner() const;
@@ -423,6 +463,8 @@ public:
                    ValueOwner *valueOwner);
     virtual ~CppComponentValue();
 
+    virtual const CppComponentValue *asCppComponentValue() const;
+
     virtual void processMembers(MemberProcessor *processor) const;
     const Value *valueForCppName(const QString &typeName) const;
 
@@ -701,6 +743,8 @@ public:
     QmlPrototypeReference(AST::UiQualifiedId *qmlTypeName, const Document *doc, ValueOwner *valueOwner);
     virtual ~QmlPrototypeReference();
 
+    virtual const QmlPrototypeReference *asQmlPrototypeReference() const;
+
     AST::UiQualifiedId *qmlTypeName() const;
 
 private:    
@@ -755,6 +799,8 @@ public:
     ASTPropertyReference(AST::UiPublicMember *ast, const Document *doc, ValueOwner *valueOwner);
     virtual ~ASTPropertyReference();
 
+    virtual const ASTPropertyReference *asAstPropertyReference() const;
+
     AST::UiPublicMember *ast() const { return _ast; }
     QString onChangedSlotName() const { return _onChangedSlotName; }
 
@@ -804,6 +850,8 @@ public:
                    ValueOwner *valueOwner);
     virtual ~ASTObjectValue();
 
+    virtual const ASTObjectValue *asAstObjectValue() const;
+
     bool getSourceLocation(QString *fileName, int *line, int *column) const;
     virtual void processMembers(MemberProcessor *processor) const;
 
diff --git a/src/libs/qmljs/qmljsscopebuilder.cpp b/src/libs/qmljs/qmljsscopebuilder.cpp
index d960fab39aa..dda5496bc5d 100644
--- a/src/libs/qmljs/qmljsscopebuilder.cpp
+++ b/src/libs/qmljs/qmljsscopebuilder.cpp
@@ -185,7 +185,7 @@ void ScopeBuilder::setQmlScopeObject(Node *node)
     iter.next();
     while (iter.hasNext()) {
         const ObjectValue *prototype = iter.next();
-        if (const CppComponentValue *qmlMetaObject = dynamic_cast<const CppComponentValue *>(prototype)) {
+        if (const CppComponentValue *qmlMetaObject = value_cast<CppComponentValue>(prototype)) {
             if ((qmlMetaObject->className() == QLatin1String("ListElement")
                     || qmlMetaObject->className() == QLatin1String("Connections")
                     ) && (qmlMetaObject->moduleName() == QLatin1String("Qt")
@@ -211,7 +211,7 @@ void ScopeBuilder::setQmlScopeObject(Node *node)
                         Evaluate evaluator(_scopeChain);
                         const Value *targetValue = evaluator(scriptBinding->statement);
 
-                        if (const ObjectValue *target = value_cast<const ObjectValue *>(targetValue)) {
+                        if (const ObjectValue *target = value_cast<ObjectValue>(targetValue)) {
                             qmlScopeObjects.prepend(target);
                         } else {
                             qmlScopeObjects.clear();
@@ -259,7 +259,7 @@ const ObjectValue *ScopeBuilder::isPropertyChangesObject(const ContextPtr &conte
     PrototypeIterator iter(object, context);
     while (iter.hasNext()) {
         const ObjectValue *prototype = iter.next();
-        if (const CppComponentValue *qmlMetaObject = dynamic_cast<const CppComponentValue *>(prototype)) {
+        if (const CppComponentValue *qmlMetaObject = value_cast<CppComponentValue>(prototype)) {
             if (qmlMetaObject->className() == QLatin1String("PropertyChanges")
                     && (qmlMetaObject->moduleName() == QLatin1String("Qt")
                         || qmlMetaObject->moduleName() == QLatin1String("QtQuick")))
diff --git a/src/plugins/qmldesigner/designercore/metainfo/nodemetainfo.cpp b/src/plugins/qmldesigner/designercore/metainfo/nodemetainfo.cpp
index 93d65369334..8b34468efea 100644
--- a/src/plugins/qmldesigner/designercore/metainfo/nodemetainfo.cpp
+++ b/src/plugins/qmldesigner/designercore/metainfo/nodemetainfo.cpp
@@ -96,14 +96,14 @@ class PropertyMemberProcessor : public MemberProcessor
 public:
     virtual bool processProperty(const QString &name, const Value *value)
     {
-        const ASTPropertyReference *ref = dynamic_cast<const ASTPropertyReference*>(value);
+        const ASTPropertyReference *ref = value_cast<ASTPropertyReference>(value);
         if (ref) {
             QString type = "unknown";
             if (!ref->ast()->memberType.isEmpty())
                 type = ref->ast()->memberType.toString();
             m_properties.append(qMakePair(name, type));
         } else {
-            if (const CppComponentValue * ov = dynamic_cast<const CppComponentValue *>(value)) {
+            if (const CppComponentValue * ov = value_cast<CppComponentValue>(value)) {
                 QString qualifiedTypeName = ov->moduleName().isEmpty() ? ov->className() : ov->moduleName() + '.' + ov->className();
                 m_properties.append(qMakePair(name, qualifiedTypeName));
             } else {
@@ -140,7 +140,7 @@ const CppComponentValue *findQmlPrototype(const ObjectValue *ov, const ContextPt
     if (!ov)
         return 0;
 
-    const CppComponentValue * qmlValue = dynamic_cast<const CppComponentValue *>(ov);
+    const CppComponentValue * qmlValue = value_cast<CppComponentValue>(ov);
     if (qmlValue)
         return qmlValue;
 
@@ -154,7 +154,7 @@ QStringList prototypes(const ObjectValue *ov, const ContextPtr &context, bool ve
         return list;
     ov = ov->prototype(context);
     while (ov) {
-        const CppComponentValue * qmlValue = dynamic_cast<const CppComponentValue *>(ov);
+        const CppComponentValue * qmlValue = value_cast<CppComponentValue>(ov);
         if (qmlValue) {
             if (versions) {
                 list << qmlValue->moduleName() + '.' + qmlValue->className() +
@@ -192,7 +192,7 @@ QList<PropertyInfo> getQmlTypes(const CppComponentValue *ov, const ContextPtr &c
         QString name = property.first;
         if (!ov->isWritable(name) && ov->isPointer(name)) {
             //dot property
-            const CppComponentValue * qmlValue = dynamic_cast<const CppComponentValue *>(ov->lookupMember(name, context));
+            const CppComponentValue * qmlValue = value_cast<CppComponentValue>(ov->lookupMember(name, context));
             if (qmlValue) {
                 QList<PropertyInfo> dotProperties = getQmlTypes(qmlValue, context);
                 foreach (const PropertyInfo &propertyInfo, dotProperties) {
@@ -204,7 +204,7 @@ QList<PropertyInfo> getQmlTypes(const CppComponentValue *ov, const ContextPtr &c
             }
         }
         if (isValueType(ov->propertyType(name))) {
-            const ObjectValue *dotObjectValue = dynamic_cast<const ObjectValue *>(ov->lookupMember(name, context));
+            const ObjectValue *dotObjectValue = value_cast<ObjectValue>(ov->lookupMember(name, context));
             if (dotObjectValue) {
                 QList<PropertyInfo> dotProperties = getObjectTypes(dotObjectValue, context);
                 foreach (const PropertyInfo &propertyInfo, dotProperties) {
@@ -224,7 +224,7 @@ QList<PropertyInfo> getQmlTypes(const CppComponentValue *ov, const ContextPtr &c
     if (!local) {
         const ObjectValue* prototype = ov->prototype(context);
 
-        const CppComponentValue * qmlObjectValue = dynamic_cast<const CppComponentValue *>(prototype);
+        const CppComponentValue * qmlObjectValue = value_cast<CppComponentValue>(prototype);
 
         if (qmlObjectValue) {
             list << getQmlTypes(qmlObjectValue, context);
@@ -240,7 +240,7 @@ QList<PropertyInfo> getTypes(const ObjectValue *ov, const ContextPtr &context, b
 {
     QList<PropertyInfo> list;
 
-    const CppComponentValue * qmlObjectValue = dynamic_cast<const CppComponentValue *>(ov);
+    const CppComponentValue * qmlObjectValue = value_cast<CppComponentValue>(ov);
 
     if (qmlObjectValue) {
         list << getQmlTypes(qmlObjectValue, context, local);
@@ -264,7 +264,7 @@ QList<PropertyInfo> getObjectTypes(const ObjectValue *ov, const ContextPtr &cont
     if (!local) {
         const ObjectValue* prototype = ov->prototype(context);
 
-        const CppComponentValue * qmlObjectValue = dynamic_cast<const CppComponentValue *>(prototype);
+        const CppComponentValue * qmlObjectValue = value_cast<CppComponentValue>(prototype);
 
         if (qmlObjectValue) {
             list << getQmlTypes(qmlObjectValue, context);
@@ -434,7 +434,7 @@ NodeMetaInfoPrivate::NodeMetaInfoPrivate(Model *model, QString type, int maj, in
         } else {
             const ObjectValue *objectValue = getObjectValue();
             if (objectValue) {
-                const CppComponentValue *qmlValue = dynamic_cast<const CppComponentValue *>(objectValue);
+                const CppComponentValue *qmlValue = value_cast<CppComponentValue>(objectValue);
                 if (qmlValue) {
                     m_majorVersion = qmlValue->componentVersion().majorVersion();
                     m_minorVersion = qmlValue->componentVersion().minorVersion();
@@ -476,7 +476,7 @@ const QmlJS::CppComponentValue *NodeMetaInfoPrivate::getCppComponentValue() cons
         if (import.info.path() != module)
             continue;
         const Value *lookupResult = import.object->lookupMember(type, context());
-        if ((value = dynamic_cast<const CppComponentValue *>(lookupResult)))
+        if ((value = value_cast<CppComponentValue>(lookupResult)))
             return value;
     }
 
@@ -759,7 +759,7 @@ QString NodeMetaInfoPrivate::packageName() const
 QString NodeMetaInfoPrivate::componentSource() const
 {
     if (isComponent()) {
-        const ASTObjectValue * astObjectValue = dynamic_cast<const ASTObjectValue *>(getObjectValue());
+        const ASTObjectValue * astObjectValue = value_cast<ASTObjectValue>(getObjectValue());
         if (astObjectValue)
             return astObjectValue->document()->source().mid(astObjectValue->typeName()->identifierToken.begin(),
                                                             astObjectValue->initializer()->rbraceToken.end());
@@ -770,7 +770,7 @@ QString NodeMetaInfoPrivate::componentSource() const
 QString NodeMetaInfoPrivate::componentFileName() const
 {
     if (isComponent()) {
-        const ASTObjectValue * astObjectValue = dynamic_cast<const ASTObjectValue *>(getObjectValue());
+        const ASTObjectValue * astObjectValue = value_cast<ASTObjectValue>(getObjectValue());
         if (astObjectValue) {
             QString fileName;
             int line;
@@ -831,7 +831,7 @@ void NodeMetaInfoPrivate::setupPrototypes()
         description.className = ov->className();
         description.minorVersion = -1;
         description.majorVersion = -1;
-        if (const CppComponentValue * qmlValue = dynamic_cast<const CppComponentValue *>(ov)) {
+        if (const CppComponentValue * qmlValue = value_cast<CppComponentValue>(ov)) {
             description.minorVersion = qmlValue->componentVersion().minorVersion();
             description.majorVersion = qmlValue->componentVersion().majorVersion();
             if (!qmlValue->moduleName().isEmpty())
diff --git a/src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp b/src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp
index be9b9f01531..ae3f345100f 100644
--- a/src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp
+++ b/src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp
@@ -344,7 +344,7 @@ public:
         const ObjectValue *value = m_context->lookupType(m_doc.data(), astTypeNode);
         defaultPropertyName = m_context->defaultPropertyName(value);
 
-        const CppComponentValue * qmlValue = dynamic_cast<const CppComponentValue *>(value);
+        const CppComponentValue * qmlValue = value_cast<CppComponentValue>(value);
         if (qmlValue) {
             typeName = fixUpPackeNameForQt(qmlValue->moduleName()) + QLatin1String(".") + qmlValue->className();
 
@@ -452,7 +452,7 @@ public:
         if (prefix.isEmpty())
             idPart = idPart->next;
         for (; idPart; idPart = idPart->next) {
-            objectValue = value_cast<const ObjectValue *>(value);
+            objectValue = value_cast<ObjectValue>(value);
             if (! objectValue) {
 //                if (idPart->name)
 //                    qDebug() << idPart->name->asString() << "has no property named"
@@ -500,7 +500,7 @@ public:
             const ObjectValue *proto = iter.next();
             if (proto->lookupMember(name, m_context) == m_context->valueOwner()->arrayPrototype())
                 return true;
-            if (const CppComponentValue *qmlIter = dynamic_cast<const CppComponentValue *>(proto)) {
+            if (const CppComponentValue *qmlIter = value_cast<CppComponentValue>(proto)) {
                 if (qmlIter->isListProperty(name))
                     return true;
             }
@@ -525,7 +525,7 @@ public:
         if (containingObject)
             containingObject->lookupMember(name, m_context, &containingObject);
 
-        if (const CppComponentValue * qmlObject = dynamic_cast<const CppComponentValue *>(containingObject)) {
+        if (const CppComponentValue * qmlObject = value_cast<CppComponentValue>(containingObject)) {
             const QString typeName = qmlObject->propertyType(name);
             if (qmlObject->getEnum(typeName).isValid()) {
                 return QVariant(cleanedValue);
@@ -569,7 +569,7 @@ public:
 
         if (containingObject)
             containingObject->lookupMember(name, m_context, &containingObject);
-        const CppComponentValue * lhsCppComponent = dynamic_cast<const CppComponentValue *>(containingObject);
+        const CppComponentValue * lhsCppComponent = value_cast<CppComponentValue>(containingObject);
         if (!lhsCppComponent)
             return QVariant();
         const QString lhsPropertyTypeName = lhsCppComponent->propertyType(name);
@@ -593,7 +593,7 @@ public:
         if (rhsValueObject)
             rhsValueObject->lookupMember(rhsValueName, m_context, &rhsValueObject);
 
-        const CppComponentValue *rhsCppComponentValue = dynamic_cast<const CppComponentValue *>(rhsValueObject);
+        const CppComponentValue *rhsCppComponentValue = value_cast<CppComponentValue>(rhsValueObject);
         if (!rhsCppComponentValue)
             return QVariant();
 
diff --git a/src/plugins/qmljseditor/qmljscompletionassist.cpp b/src/plugins/qmljseditor/qmljscompletionassist.cpp
index b5b0dd75775..1f448cca364 100644
--- a/src/plugins/qmljseditor/qmljscompletionassist.cpp
+++ b/src/plugins/qmljseditor/qmljscompletionassist.cpp
@@ -148,7 +148,7 @@ public:
 
     virtual void operator ()(const Value *base, const QString &name, const Value *)
     {
-        const CppComponentValue *qmlBase = dynamic_cast<const CppComponentValue *>(base);
+        const CppComponentValue *qmlBase = value_cast<CppComponentValue>(base);
 
         QString itemText = name;
         QString postfix;
@@ -547,7 +547,7 @@ IAssistProposal *QmlJSCompletionAssistProcessor::perform(const IAssistInterface
                 }
                 const Value *v = newScopeType->lookupMember(it->name.toString(), context);
                 v = context->lookupReference(v);
-                newScopeType = value_cast<const ObjectValue *>(v);
+                newScopeType = value_cast<ObjectValue>(v);
             }
             if (!newScopeType)
                 break;
@@ -642,7 +642,7 @@ IAssistProposal *QmlJSCompletionAssistProcessor::perform(const IAssistInterface
             const Value *value =
                     getPropertyValue(qmlScopeType, contextFinder.bindingPropertyName(), context);
             if (const QmlEnumValue *enumValue =
-                    dynamic_cast<const QmlEnumValue *>(value)) {
+                    value_cast<QmlEnumValue>(value)) {
                 const QString &name = context->imports(document.data())->nameForImportedObject(enumValue->owner(), context.data());
                 foreach (const QString &key, enumValue->keys()) {
                     QString completion;
diff --git a/src/plugins/qmljseditor/qmljsfindreferences.cpp b/src/plugins/qmljseditor/qmljsfindreferences.cpp
index b5d7965e258..557fbca3def 100644
--- a/src/plugins/qmljseditor/qmljsfindreferences.cpp
+++ b/src/plugins/qmljseditor/qmljsfindreferences.cpp
@@ -525,7 +525,7 @@ protected:
             if ((!_name.isEmpty()) && _name.at(0).isUpper()) {
                 // a possible type
                 _targetValue = _scopeChain->lookup(_name, &_scope);
-                if (value_cast<const ObjectValue*>(_targetValue))
+                if (value_cast<ObjectValue>(_targetValue))
                     _typeKind = TypeKind;
             }
         }
@@ -851,7 +851,7 @@ static void find_helper(QFutureInterface<FindReferences::Usage> &future,
     FindReferences::Usage searchStarting(replacement, name, 0, 0, 0);
 
     if (findTarget.typeKind() == findTarget.TypeKind){
-        const ObjectValue *typeValue = value_cast<const ObjectValue*>(findTarget.targetValue());
+        const ObjectValue *typeValue = value_cast<ObjectValue>(findTarget.targetValue());
         if (!typeValue)
             return;
         future.reportResult(searchStarting);
diff --git a/src/plugins/qmljseditor/qmljshoverhandler.cpp b/src/plugins/qmljseditor/qmljshoverhandler.cpp
index bc005757dde..d2c5797c7e8 100644
--- a/src/plugins/qmljseditor/qmljshoverhandler.cpp
+++ b/src/plugins/qmljseditor/qmljshoverhandler.cpp
@@ -300,7 +300,7 @@ void HoverHandler::prettyPrintTooltip(const QmlJS::Value *value,
             }
         }
     } else if (const QmlEnumValue *enumValue =
-               dynamic_cast<const QmlEnumValue *>(value)) {
+               value_cast<QmlEnumValue>(value)) {
         setToolTip(enumValue->name());
     }
 
diff --git a/src/plugins/qmljseditor/qmljssemantichighlighter.cpp b/src/plugins/qmljseditor/qmljssemantichighlighter.cpp
index b22db9abca0..8bd0b6fa773 100644
--- a/src/plugins/qmljseditor/qmljssemantichighlighter.cpp
+++ b/src/plugins/qmljseditor/qmljssemantichighlighter.cpp
@@ -138,7 +138,7 @@ protected:
         PrototypeIterator it(v, m_scopeChain.context());
         while (it.hasNext()) {
             const ObjectValue *proto = it.next();
-            const CppComponentValue *qmlProto = dynamic_cast<const CppComponentValue *>(proto);
+            const CppComponentValue *qmlProto = value_cast<CppComponentValue>(proto);
             if (!qmlProto)
                 continue;
             if (qmlProto->metaObject() == m_statePrototype->metaObject())
diff --git a/src/plugins/qmljseditor/quicktoolbar.cpp b/src/plugins/qmljseditor/quicktoolbar.cpp
index c83610d2cce..0ed04a52995 100644
--- a/src/plugins/qmljseditor/quicktoolbar.cpp
+++ b/src/plugins/qmljseditor/quicktoolbar.cpp
@@ -76,7 +76,7 @@ static inline const ObjectValue * getPropertyChangesTarget(Node *node, const Sco
                         && ! scriptBinding->qualifiedId->next) {
                     Evaluate evaluator(&scopeChain);
                     const Value *targetValue = evaluator(scriptBinding->statement);
-                    if (const ObjectValue *targetObject = value_cast<const ObjectValue *>(targetValue)) {
+                    if (const ObjectValue *targetObject = value_cast<ObjectValue>(targetValue)) {
                         return targetObject;
                     } else {
                         return 0;
diff --git a/tests/auto/qml/codemodel/basic/tst_basic.cpp b/tests/auto/qml/codemodel/basic/tst_basic.cpp
index d5640eb0860..5a50de55bca 100644
--- a/tests/auto/qml/codemodel/basic/tst_basic.cpp
+++ b/tests/auto/qml/codemodel/basic/tst_basic.cpp
@@ -144,17 +144,17 @@ void tst_Basic::basicObjectTests()
     QVERIFY(ovProperty);
     QCOMPARE(ovProperty->className(), QString("State"));
 
-    const CppComponentValue * qmlItemValue = dynamic_cast<const CppComponentValue *>(ovItem);
+    const CppComponentValue * qmlItemValue = value_cast<CppComponentValue>(ovItem);
     QVERIFY(qmlItemValue);
     QCOMPARE(qmlItemValue->defaultPropertyName(), QString("data"));
     QCOMPARE(qmlItemValue->propertyType("state"), QString("string"));
 
     const ObjectValue *ovState = context->lookupType(doc.data(), QStringList() << "State");
-    const CppComponentValue * qmlState2Value = dynamic_cast<const CppComponentValue *>(ovState);
+    const CppComponentValue * qmlState2Value = value_cast<CppComponentValue>(ovState);
     QCOMPARE(qmlState2Value->className(), QString("State"));
 
     const ObjectValue *ovImage = context->lookupType(doc.data(), QStringList() << "Image");
-    const CppComponentValue * qmlImageValue = dynamic_cast<const CppComponentValue *>(ovImage);
+    const CppComponentValue * qmlImageValue = value_cast<CppComponentValue>(ovImage);
     QCOMPARE(qmlImageValue->className(), QString("Image"));
     QCOMPARE(qmlImageValue->propertyType("source"), QString("QUrl"));
 }