Merge remote-tracking branch 'origin/dev' into wip/scenegraphng

Change-Id: Iba540adaeffb0098fc4e1923050eb611bf47287b

24 files changed, 509 insertions, 230 deletions

diff --git a/src/qml/qml/qqml.h b/src/qml/qml/qqml.h
index f0973338ea..ddb4af0b81 100644
--- a/src/qml/qml/qqml.h
+++ b/src/qml/qml/qqml.h
@@ -238,6 +238,44 @@ int qmlRegisterExtendedUncreatableType(const char *uri, int versionMajor, int ve
     return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
 }
 
+template<typename T, typename E, int metaObjectRevision>
+int qmlRegisterExtendedUncreatableType(const char *uri, int versionMajor, int versionMinor, const char *qmlName, const QString& reason)
+{
+    QML_GETTYPENAMES
+
+    QQmlAttachedPropertiesFunc attached = QQmlPrivate::attachedPropertiesFunc<E>();
+    const QMetaObject * attachedMetaObject = QQmlPrivate::attachedPropertiesMetaObject<E>();
+    if (!attached) {
+        attached = QQmlPrivate::attachedPropertiesFunc<T>();
+        attachedMetaObject = QQmlPrivate::attachedPropertiesMetaObject<T>();
+    }
+
+    QQmlPrivate::RegisterType type = {
+        1,
+
+        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
+        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
+        0,
+        Q_NULLPTR,
+        reason,
+
+        uri, versionMajor, versionMinor, qmlName, &T::staticMetaObject,
+
+        attached,
+        attachedMetaObject,
+
+        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(),
+        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
+        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),
+
+        QQmlPrivate::createParent<E>, &E::staticMetaObject,
+
+        Q_NULLPTR,
+        metaObjectRevision
+    };
+
+    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
+}
 
 Q_QML_EXPORT int qmlRegisterUncreatableMetaObject(const QMetaObject &staticMetaObject, const char *uri, int versionMajor, int versionMinor, const char *qmlName, const QString& reason);
 
diff --git a/src/qml/qml/qqmlapplicationengine.cpp b/src/qml/qml/qqmlapplicationengine.cpp
index 2a96d96302..a10dda166c 100644
--- a/src/qml/qml/qqmlapplicationengine.cpp
+++ b/src/qml/qml/qqmlapplicationengine.cpp
@@ -66,8 +66,6 @@ void QQmlApplicationEnginePrivate::cleanUp()
 void QQmlApplicationEnginePrivate::init()
 {
     Q_Q(QQmlApplicationEngine);
-    q->connect(&statusMapper, SIGNAL(mapped(QObject*)),
-            q, SLOT(_q_finishLoad(QObject*)));
     q->connect(q, SIGNAL(quit()), QCoreApplication::instance(), SLOT(quit()));
     q->connect(q, &QQmlApplicationEngine::exit, QCoreApplication::instance(), &QCoreApplication::exit);
 #if QT_CONFIG(translation)
@@ -113,20 +111,15 @@ void QQmlApplicationEnginePrivate::startLoad(const QUrl &url, const QByteArray &
         c->loadUrl(url);
 
     if (!c->isLoading()) {
-        _q_finishLoad(c);
+        finishLoad(c);
         return;
     }
-    statusMapper.setMapping(c, c);
-    q->connect(c, SIGNAL(statusChanged(QQmlComponent::Status)),
-        &statusMapper, SLOT(map()));
+    QObject::connect(c, &QQmlComponent::statusChanged, q, [this, c] { this->finishLoad(c); });
 }
 
-void QQmlApplicationEnginePrivate::_q_finishLoad(QObject *o)
+void QQmlApplicationEnginePrivate::finishLoad(QQmlComponent *c)
 {
     Q_Q(QQmlApplicationEngine);
-    QQmlComponent *c = qobject_cast<QQmlComponent *>(o);
-    if (!c)
-        return;
     switch (c->status()) {
     case QQmlComponent::Error:
         qWarning() << "QQmlApplicationEngine failed to load component";
diff --git a/src/qml/qml/qqmlapplicationengine.h b/src/qml/qml/qqmlapplicationengine.h
index e64d7495cd..6c57f46c72 100644
--- a/src/qml/qml/qqmlapplicationengine.h
+++ b/src/qml/qml/qqmlapplicationengine.h
@@ -74,7 +74,6 @@ Q_SIGNALS:
 private:
     Q_DISABLE_COPY(QQmlApplicationEngine)
     Q_DECLARE_PRIVATE(QQmlApplicationEngine)
-    Q_PRIVATE_SLOT(d_func(), void _q_finishLoad(QObject*))
 };
 
 QT_END_NAMESPACE
diff --git a/src/qml/qml/qqmlapplicationengine_p.h b/src/qml/qml/qqmlapplicationengine_p.h
index 8c342a43a9..4795170bed 100644
--- a/src/qml/qml/qqmlapplicationengine_p.h
+++ b/src/qml/qml/qqmlapplicationengine_p.h
@@ -42,7 +42,6 @@
 
 #include "qqmlapplicationengine.h"
 #include "qqmlengine_p.h"
-#include <QSignalMapper>
 #include <QCoreApplication>
 #include <QFileInfo>
 #include <QLibraryInfo>
@@ -73,9 +72,8 @@ public:
 
     void startLoad(const QUrl &url, const QByteArray &data = QByteArray(), bool dataFlag = false);
     void loadTranslations(const QUrl &rootFile);
-    void _q_finishLoad(QObject *component);
+    void finishLoad(QQmlComponent *component);
     QList<QObject *> objects;
-    QSignalMapper statusMapper;
     QObject *appObj;
 
 #if QT_CONFIG(translation)
diff --git a/src/qml/qml/qqmlboundsignal.cpp b/src/qml/qml/qqmlboundsignal.cpp
index 4fbd828307..19ece44beb 100644
--- a/src/qml/qml/qqmlboundsignal.cpp
+++ b/src/qml/qml/qqmlboundsignal.cpp
@@ -199,7 +199,7 @@ void QQmlBoundSignalExpression::evaluate(void **a)
         //    for several cases (such as QVariant type and QObject-derived types)
         //args[ii] = engine->metaTypeToJS(type, a[ii + 1]);
         if (type == qMetaTypeId<QJSValue>()) {
-            if (QV4::Value *v4Value = QJSValuePrivate::getValue(reinterpret_cast<QJSValue *>(a[ii + 1])))
+            if (QV4::Value *v4Value = QJSValuePrivate::valueForData(reinterpret_cast<QJSValue *>(a[ii + 1]), &callData->args[ii]))
                 callData->args[ii] = *v4Value;
             else
                 callData->args[ii] = QV4::Encode::undefined();
diff --git a/src/qml/qml/qqmlengine.cpp b/src/qml/qml/qqmlengine.cpp
index e1fa97b52f..e99335a117 100644
--- a/src/qml/qml/qqmlengine.cpp
+++ b/src/qml/qml/qqmlengine.cpp
@@ -65,6 +65,7 @@
 #include <QtCore/qmetaobject.h>
 #include <QDebug>
 #include <QtCore/qcoreapplication.h>
+#include <QtCore/qcryptographichash.h>
 #include <QtCore/qdir.h>
 #include <QtCore/qmutex.h>
 #include <QtCore/qthread.h>
@@ -564,7 +565,7 @@ The following functions are also on the Qt object.
     \l{Screen} attached object. In practice the array corresponds to the screen
     list returned by QGuiApplication::screens(). In addition to examining
     properties like name, width, height, etc., the array elements can also be
-    assigned to the targetScreen property of Window items, thus serving as an
+    assigned to the screen property of Window items, thus serving as an
     alternative to the C++ side's QWindow::setScreen(). This property has been
     added in Qt 5.9.
 
@@ -585,7 +586,7 @@ The following functions are also on the Qt object.
     \li application.font
     \endlist
 
-    \sa Screen, Window, Window.targetScreen
+    \sa Screen, Window, Window.screen
 */
 
 /*!
@@ -760,7 +761,7 @@ class QQmlThreadNotifierProxyObject : public QObject
 public:
     QPointer<QObject> target;
 
-    virtual int qt_metacall(QMetaObject::Call, int methodIndex, void **a) {
+    int qt_metacall(QMetaObject::Call, int methodIndex, void **a) override {
         if (!target)
             return -1;
 
@@ -2178,6 +2179,27 @@ QString QQmlEngine::offlineStoragePath() const
     return d->offlineStoragePath;
 }
 
+/*!
+  Returns the file path where a \l{QtQuick.LocalStorage}{Local Storage}
+  database with the identifier \a databaseName is (or would be) located.
+
+  \sa LocalStorage.openDatabaseSync()
+  \since 5.9
+*/
+QString QQmlEngine::offlineStorageDatabaseFilePath(const QString &databaseName) const
+{
+    Q_D(const QQmlEngine);
+    QCryptographicHash md5(QCryptographicHash::Md5);
+    md5.addData(databaseName.toUtf8());
+    return d->offlineStorageDatabaseDirectory() + QLatin1String(md5.result().toHex());
+}
+
+QString QQmlEnginePrivate::offlineStorageDatabaseDirectory() const
+{
+    Q_Q(const QQmlEngine);
+    return q->offlineStoragePath() + QDir::separator() + QLatin1String("Databases") + QDir::separator();
+}
+
 QQmlPropertyCache *QQmlEnginePrivate::createCache(QQmlType *type, int minorVersion)
 {
     QList<QQmlType *> types;
diff --git a/src/qml/qml/qqmlengine.h b/src/qml/qml/qqmlengine.h
index 3102a20fac..8cada954fe 100644
--- a/src/qml/qml/qqmlengine.h
+++ b/src/qml/qml/qqmlengine.h
@@ -136,6 +136,7 @@ public:
 
     void setOfflineStoragePath(const QString& dir);
     QString offlineStoragePath() const;
+    QString offlineStorageDatabaseFilePath(const QString &databaseName) const;
 
     QUrl baseUrl() const;
     void setBaseUrl(const QUrl &);
diff --git a/src/qml/qml/qqmlengine_p.h b/src/qml/qml/qqmlengine_p.h
index 916566b6c7..1bdeacd524 100644
--- a/src/qml/qml/qqmlengine_p.h
+++ b/src/qml/qml/qqmlengine_p.h
@@ -205,6 +205,7 @@ public:
     inline void deleteInEngineThread(T *);
     template<typename T>
     inline static void deleteInEngineThread(QQmlEngine *, T *);
+    QString offlineStorageDatabaseDirectory() const;
 
     // These methods may be called from the loader thread
     inline QQmlPropertyCache *cache(QQmlType *, int);
diff --git a/src/qml/qml/qqmlimport.cpp b/src/qml/qml/qqmlimport.cpp
index 8712b638c5..c07d5c740a 100644
--- a/src/qml/qml/qqmlimport.cpp
+++ b/src/qml/qml/qqmlimport.cpp
@@ -1,5 +1,6 @@
 /****************************************************************************
 **
+** Copyright (C) 2017 Crimson AS <info@crimson.no>
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
@@ -130,42 +131,74 @@ bool isPathAbsolute(const QString &path)
 #endif
 }
 
-// If the type does not already exist as a file import, add the type and return the new type
-QQmlType *getTypeForUrl(const QString &urlString, const QHashedStringRef& typeName,
+/*
+    \internal
+
+    Fetches the QQmlType instance registered for \a urlString, creating a
+    registration for it if it is not already registered, using the associated
+    \a typeName, \a isCompositeSingleton, \a majorVersion and \a minorVersion
+    details.
+
+    Errors (if there are any) are placed into \a errors, if it is nonzero. Note
+    that errors are treated as fatal if \a errors is not set.
+*/
+QQmlType *fetchOrCreateTypeForUrl(const QString &urlString, const QHashedStringRef& typeName,
                         bool isCompositeSingleton, QList<QQmlError> *errors,
                         int majorVersion=-1, int minorVersion=-1)
 {
-    QUrl url(urlString);
+    QUrl url(urlString); // ### unfortunate (costly) conversion
     QQmlType *ret = QQmlMetaType::qmlType(url);
-    if (!ret) { //QQmlType not yet existing for composite or composite singleton type
-        int dot = typeName.indexOf(QLatin1Char('.'));
-        QHashedStringRef unqualifiedtype = dot < 0 ? typeName : QHashedStringRef(typeName.constData() + dot + 1, typeName.length() - dot - 1);
-
-        //XXX: The constData of the string ref is pointing somewhere unsafe in qmlregister, so we need to create a temporary copy
-        QByteArray buf(unqualifiedtype.toString().toUtf8());
-
-        if (isCompositeSingleton) {
-            QQmlPrivate::RegisterCompositeSingletonType reg = {
-                url,
-                "", //Empty URI indicates loaded via file imports
-                majorVersion,
-                minorVersion,
-                buf.constData()
-            };
-            ret = QQmlMetaType::qmlTypeFromIndex(QQmlPrivate::qmlregister(QQmlPrivate::CompositeSingletonRegistration, &reg));
-        } else {
-            QQmlPrivate::RegisterCompositeType reg = {
-                url,
-                "", //Empty URI indicates loaded via file imports
-                majorVersion,
-                minorVersion,
-                buf.constData()
-            };
-            ret = QQmlMetaType::qmlTypeFromIndex(QQmlPrivate::qmlregister(QQmlPrivate::CompositeRegistration, &reg));
-        }
+    if (ret)
+        return ret;
+
+    int dot = typeName.indexOf(QLatin1Char('.'));
+    QHashedStringRef unqualifiedtype = dot < 0 ? typeName : QHashedStringRef(typeName.constData() + dot + 1, typeName.length() - dot - 1);
+
+    // We need a pointer, but we were passed a string. Take a copy so we
+    // can guarentee it will live long enough to reach qmlregister.
+    QByteArray buf(unqualifiedtype.toString().toUtf8());
+
+    // Register the type. Note that the URI parameters here are empty; for
+    // file type imports, we do not place them in a URI as we don't
+    // necessarily have a good and unique one (picture a library import,
+    // which may be found in multiple plugin locations on disk), but there
+    // are other reasons for this too.
+    //
+    // By not putting them in a URI, we prevent the types from being
+    // registered on a QQmlTypeModule; this is important, as once types are
+    // placed on there, they cannot be easily removed, meaning if the
+    // developer subsequently loads a different import (meaning different
+    // types) with the same URI (using, say, a different plugin path), it is
+    // very undesirable that we continue to associate the types from the
+    // "old" URI with that new module.
+    //
+    // Not having URIs also means that the types cannot be found by name
+    // etc, the only way to look them up is through QQmlImports -- for
+    // better or worse.
+    if (isCompositeSingleton) {
+        QQmlPrivate::RegisterCompositeSingletonType reg = {
+            url,
+            "", // uri
+            majorVersion,
+            minorVersion,
+            buf.constData()
+        };
+        ret = QQmlMetaType::qmlTypeFromIndex(QQmlPrivate::qmlregister(QQmlPrivate::CompositeSingletonRegistration, &reg));
+    } else {
+        QQmlPrivate::RegisterCompositeType reg = {
+            url,
+            "", // uri
+            majorVersion,
+            minorVersion,
+            buf.constData()
+        };
+        ret = QQmlMetaType::qmlTypeFromIndex(QQmlPrivate::qmlregister(QQmlPrivate::CompositeRegistration, &reg));
     }
-    if (!ret) {//Usually when a type name is "found" but invalid
-        //qDebug() << ret << urlString << QQmlMetaType::qmlType(url);
+
+    // This means that the type couldn't be found by URL, but could not be
+    // registered either, meaning we most likely were passed some kind of bad
+    // data.
+    if (!ret) {
         if (!errors) // Cannot list errors properly, just quit
             qFatal("%s", QQmlMetaType::typeRegistrationFailures().join('\n').toLatin1().constData());
         QQmlError error;
@@ -204,44 +237,38 @@ void qmlClearEnginePlugins()
 typedef QPair<QStaticPlugin, QJsonArray> StaticPluginPair;
 #endif
 
-class QQmlImportNamespace
-{
-public:
-    QQmlImportNamespace() : nextNamespace(0) {}
-    ~QQmlImportNamespace() { qDeleteAll(imports); }
-
-    struct Import {
-        QString uri;
-        QString url;
-        int majversion;
-        int minversion;
-        bool isLibrary;
-        QQmlDirComponents qmlDirComponents;
-        QQmlDirScripts qmlDirScripts;
-
-        bool setQmldirContent(const QString &resolvedUrl, const QQmlTypeLoader::QmldirContent *qmldir,
-                              QQmlImportNamespace *nameSpace, QList<QQmlError> *errors);
-
-        static QQmlDirScripts getVersionedScripts(const QQmlDirScripts &qmldirscripts, int vmaj, int vmin);
-
-        bool resolveType(QQmlTypeLoader *typeLoader, const QHashedStringRef &type,
-                         int *vmajor, int *vminor, QQmlType** type_return,
-                         QString *base = 0, bool *typeRecursionDetected = 0) const;
-    };
-    QList<Import *> imports;
+/*!
+    \internal
+    \class QQmlImportInstance
 
-    Import *findImport(const QString &uri) const;
+    A QQmlImportType represents a single import of a document, held within a
+    namespace.
 
-    bool resolveType(QQmlTypeLoader *typeLoader, const QHashedStringRef& type,
-                     int *vmajor, int *vminor, QQmlType** type_return,
-                     QString *base = 0, QList<QQmlError> *errors = 0);
+    \note The uri here may not necessarily be unique (e.g. for file imports).
 
-    // Prefix when used as a qualified import.  Otherwise empty.
-    QHashedString prefix;
+    \note Version numbers may be -1 for file imports: this means that no
+    version was specified as part of the import. Type resolution will be
+    responsible for attempting to find the "best" possible version.
+*/
 
-    // Used by QQmlImportsPrivate::qualifiedSets
-    QQmlImportNamespace *nextNamespace;
-};
+/*!
+    \internal
+    \class QQmlImportNamespace
+
+    A QQmlImportNamespace is a way of seperating imports into a local namespace.
+
+    Within a QML document, there is at least one namespace (the
+    "unqualified set") where imports without a qualifier are placed, i.e:
+
+        import QtQuick 2.6
+
+    will have a single namespace (the unqualified set) containing a single import
+    for QtQuick 2.6. However, there may be others if an import statement gives
+    a qualifier, i.e the following will result in an additional new
+    QQmlImportNamespace in the qualified set:
+
+        import MyFoo 1.0 as Foo
+*/
 
 class QQmlImportsPrivate
 {
@@ -273,9 +300,12 @@ public:
     QString base;
     int ref;
 
+    // storage of data related to imports without a namespace
     mutable QQmlImportNamespace unqualifiedset;
 
     QQmlImportNamespace *findQualifiedNamespace(const QHashedStringRef &) const;
+
+    // storage of data related to imports with a namespace
     mutable QFieldList<QQmlImportNamespace, &QQmlImportNamespace::nextNamespace> qualifiedSets;
 
     QQmlTypeLoader *typeLoader;
@@ -284,21 +314,21 @@ public:
                              QQmlImportDatabase *database,
                              QString *outQmldirFilePath, QString *outUrl);
 
-    static bool validateQmldirVersion(const QQmlTypeLoader::QmldirContent *qmldir, const QString &uri, int vmaj, int vmin,
+    static bool validateQmldirVersion(const QQmlTypeLoaderQmldirContent *qmldir, const QString &uri, int vmaj, int vmin,
                                       QList<QQmlError> *errors);
 
     bool importExtension(const QString &absoluteFilePath, const QString &uri,
                          int vmaj, int vmin,
                          QQmlImportDatabase *database,
-                         const QQmlTypeLoader::QmldirContent *qmldir,
+                         const QQmlTypeLoaderQmldirContent *qmldir,
                          QList<QQmlError> *errors);
 
     bool getQmldirContent(const QString &qmldirIdentifier, const QString &uri,
-                          const QQmlTypeLoader::QmldirContent **qmldir, QList<QQmlError> *errors);
+                          const QQmlTypeLoaderQmldirContent **qmldir, QList<QQmlError> *errors);
 
     QString resolvedUri(const QString &dir_arg, QQmlImportDatabase *database);
 
-    QQmlImportNamespace::Import *addImportToNamespace(QQmlImportNamespace *nameSpace,
+    QQmlImportInstance *addImportToNamespace(QQmlImportNamespace *nameSpace,
                                                       const QString &uri, const QString &url,
                                                       int vmaj, int vmin, QV4::CompiledData::Import::ImportType type,
                                                       QList<QQmlError> *errors, bool lowPrecedence = false);
@@ -363,12 +393,22 @@ QUrl QQmlImports::baseUrl() const
     return d->baseUrl;
 }
 
+/*
+    \internal
+
+    This method is responsible for populating data of all types visible in this
+    document's imports into the \a cache for resolution elsewhere (e.g. in JS,
+    or when loading additional types).
+
+    \note This is for C++ types only. Composite types are handled separately,
+    as they do not have a QQmlTypeModule.
+*/
 void QQmlImports::populateCache(QQmlTypeNameCache *cache) const
 {
     const QQmlImportNamespace &set = d->unqualifiedset;
 
     for (int ii = set.imports.count() - 1; ii >= 0; --ii) {
-        const QQmlImportNamespace::Import *import = set.imports.at(ii);
+        const QQmlImportInstance *import = set.imports.at(ii);
         QQmlTypeModule *module = QQmlMetaType::typeModule(import->uri, import->majversion);
         if (module) {
             cache->m_anonymousImports.append(QQmlTypeModuleVersion(module, import->minversion));
@@ -379,11 +419,14 @@ void QQmlImports::populateCache(QQmlTypeNameCache *cache) const
 
         const QQmlImportNamespace &set = *ns;
 
+        // positioning is important; we must create the namespace even if there is no module.
+        QQmlTypeNameCache::Import &typeimport = cache->m_namedImports[set.prefix];
+        typeimport.m_qualifier = set.prefix;
+
         for (int ii = set.imports.count() - 1; ii >= 0; --ii) {
-            const QQmlImportNamespace::Import *import = set.imports.at(ii);
+            const QQmlImportInstance *import = set.imports.at(ii);
             QQmlTypeModule *module = QQmlMetaType::typeModule(import->uri, import->majversion);
             if (module) {
-                QQmlTypeNameCache::Import &typeimport = cache->m_namedImports[set.prefix];
                 typeimport.modules.append(QQmlTypeModuleVersion(module, import->minversion));
             }
         }
@@ -412,7 +455,7 @@ void findCompositeSingletons(const QQmlImportNamespace &set, QList<QQmlImports::
     typedef QQmlDirComponents::const_iterator ConstIterator;
 
     for (int ii = set.imports.count() - 1; ii >= 0; --ii) {
-        const QQmlImportNamespace::Import *import = set.imports.at(ii);
+        const QQmlImportInstance *import = set.imports.at(ii);
 
         const QQmlDirComponents &components = import->qmlDirComponents;
 
@@ -430,6 +473,15 @@ void findCompositeSingletons(const QQmlImportNamespace &set, QList<QQmlImports::
     }
 }
 
+/*
+    \internal
+
+    Returns a list of all composite singletons present in this document's
+    imports.
+
+    This information is used by QQmlTypeLoader to ensure that composite singletons
+    are marked as dependencies during type loading.
+*/
 QList<QQmlImports::CompositeSingletonReference> QQmlImports::resolvedCompositeSingletons() const
 {
     QList<QQmlImports::CompositeSingletonReference> compositeSingletons;
@@ -445,6 +497,12 @@ QList<QQmlImports::CompositeSingletonReference> QQmlImports::resolvedCompositeSi
     return compositeSingletons;
 }
 
+/*
+    \internal
+
+    Returns a list of scripts imported by this document. This is used by
+    QQmlTypeLoader to properly handle dependencies on imported scripts.
+*/
 QList<QQmlImports::ScriptReference> QQmlImports::resolvedScripts() const
 {
     QList<QQmlImports::ScriptReference> scripts;
@@ -452,7 +510,7 @@ QList<QQmlImports::ScriptReference> QQmlImports::resolvedScripts() const
     const QQmlImportNamespace &set = d->unqualifiedset;
 
     for (int ii = set.imports.count() - 1; ii >= 0; --ii) {
-        const QQmlImportNamespace::Import *import = set.imports.at(ii);
+        const QQmlImportInstance *import = set.imports.at(ii);
 
         for (const QQmlDirParser::Script &script : import->qmlDirScripts) {
             ScriptReference ref;
@@ -466,7 +524,7 @@ QList<QQmlImports::ScriptReference> QQmlImports::resolvedScripts() const
         const QQmlImportNamespace &set = *ns;
 
         for (int ii = set.imports.count() - 1; ii >= 0; --ii) {
-            const QQmlImportNamespace::Import *import = set.imports.at(ii);
+            const QQmlImportInstance *import = set.imports.at(ii);
 
             for (const QQmlDirParser::Script &script : import->qmlDirScripts) {
                 ScriptReference ref;
@@ -590,7 +648,7 @@ bool QQmlImports::resolveType(const QHashedStringRef &type,
     return false;
 }
 
-bool QQmlImportNamespace::Import::setQmldirContent(const QString &resolvedUrl, const QQmlTypeLoader::QmldirContent *qmldir, QQmlImportNamespace *nameSpace, QList<QQmlError> *errors)
+bool QQmlImportInstance::setQmldirContent(const QString &resolvedUrl, const QQmlTypeLoaderQmldirContent *qmldir, QQmlImportNamespace *nameSpace, QList<QQmlError> *errors)
 {
     Q_ASSERT(resolvedUrl.endsWith(Slash));
     url = resolvedUrl;
@@ -600,7 +658,7 @@ bool QQmlImportNamespace::Import::setQmldirContent(const QString &resolvedUrl, c
     const QQmlDirScripts &scripts = qmldir->scripts();
     if (!scripts.isEmpty()) {
         // Verify that we haven't imported these scripts already
-        for (QList<QQmlImportNamespace::Import *>::const_iterator it = nameSpace->imports.constBegin();
+        for (QList<QQmlImportInstance *>::const_iterator it = nameSpace->imports.constBegin();
              it != nameSpace->imports.constEnd(); ++it) {
             if ((*it != this) && ((*it)->uri == uri)) {
                 QQmlError error;
@@ -616,7 +674,7 @@ bool QQmlImportNamespace::Import::setQmldirContent(const QString &resolvedUrl, c
     return true;
 }
 
-QQmlDirScripts QQmlImportNamespace::Import::getVersionedScripts(const QQmlDirScripts &qmldirscripts, int vmaj, int vmin)
+QQmlDirScripts QQmlImportInstance::getVersionedScripts(const QQmlDirScripts &qmldirscripts, int vmaj, int vmin)
 {
     QMap<QString, QQmlDirParser::Script> versioned;
 
@@ -652,7 +710,7 @@ bool QQmlImports::resolveType(QQmlImportNamespace* ns, const QHashedStringRef &t
     return ns->resolveType(d->typeLoader,type,vmaj,vmin,type_return);
 }
 
-bool QQmlImportNamespace::Import::resolveType(QQmlTypeLoader *typeLoader,
+bool QQmlImportInstance::resolveType(QQmlTypeLoader *typeLoader,
                                               const QHashedStringRef& type, int *vmajor, int *vminor,
                                               QQmlType** type_return, QString *base, bool *typeRecursionDetected) const
 {
@@ -683,15 +741,17 @@ bool QQmlImportNamespace::Import::resolveType(QQmlTypeLoader *typeLoader,
                 if ((candidate == end) ||
                     (c.majorVersion > candidate->majorVersion) ||
                     ((c.majorVersion == candidate->majorVersion) && (c.minorVersion > candidate->minorVersion))) {
-                    componentUrl = resolveLocalUrl(QString(url + c.typeName + dotqml_string), c.fileName);
-                    if (c.internal && base) {
-                        if (resolveLocalUrl(*base, c.fileName) != componentUrl)
-                            continue; // failed attempt to access an internal type
-                    }
-                    if (base && (*base == componentUrl)) {
-                        if (typeRecursionDetected)
-                            *typeRecursionDetected = true;
-                        continue; // no recursion
+                    if (base) {
+                        componentUrl = resolveLocalUrl(QString(url + c.typeName + dotqml_string), c.fileName);
+                        if (c.internal) {
+                            if (resolveLocalUrl(*base, c.fileName) != componentUrl)
+                                continue; // failed attempt to access an internal type
+                        }
+                        if (*base == componentUrl) {
+                            if (typeRecursionDetected)
+                                *typeRecursionDetected = true;
+                            continue; // no recursion
+                        }
                     }
 
                     // This is our best candidate so far
@@ -702,9 +762,11 @@ bool QQmlImportNamespace::Import::resolveType(QQmlTypeLoader *typeLoader,
         }
 
         if (candidate != end) {
+            if (!base) // ensure we have a componentUrl
+                componentUrl = resolveLocalUrl(QString(url + candidate->typeName + dotqml_string), candidate->fileName);
             int major = vmajor ? *vmajor : -1;
             int minor = vminor ? *vminor : -1;
-            QQmlType *returnType = getTypeForUrl(componentUrl, type, isCompositeSingleton, 0,
+            QQmlType *returnType = fetchOrCreateTypeForUrl(componentUrl, type, isCompositeSingleton, 0,
                                                  major, minor);
             if (type_return)
                 *type_return = returnType;
@@ -732,7 +794,7 @@ bool QQmlImportNamespace::Import::resolveType(QQmlTypeLoader *typeLoader,
                 if (typeRecursionDetected)
                     *typeRecursionDetected = true;
             } else {
-                QQmlType *returnType = getTypeForUrl(qmlUrl, type, false, 0);
+                QQmlType *returnType = fetchOrCreateTypeForUrl(qmlUrl, type, false, 0);
                 if (type_return)
                     *type_return = returnType;
                 return returnType != 0;
@@ -777,7 +839,7 @@ bool QQmlImportsPrivate::resolveType(const QHashedStringRef& type, int *vmajor,
             return true;
         if (s->imports.count() == 1 && !s->imports.at(0)->isLibrary && type_return && s != &unqualifiedset) {
             // qualified, and only 1 url
-            *type_return = getTypeForUrl(resolveLocalUrl(s->imports.at(0)->url, unqualifiedtype.toString() + QLatin1String(".qml")), type, false, errors);
+            *type_return = fetchOrCreateTypeForUrl(resolveLocalUrl(s->imports.at(0)->url, unqualifiedtype.toString() + QLatin1String(".qml")), type, false, errors);
             return (*type_return != 0);
         }
     }
@@ -785,9 +847,9 @@ bool QQmlImportsPrivate::resolveType(const QHashedStringRef& type, int *vmajor,
     return false;
 }
 
-QQmlImportNamespace::Import *QQmlImportNamespace::findImport(const QString &uri) const
+QQmlImportInstance *QQmlImportNamespace::findImport(const QString &uri) const
 {
-    for (Import *import : imports) {
+    for (QQmlImportInstance *import : imports) {
         if (import->uri == uri)
             return import;
     }
@@ -800,13 +862,13 @@ bool QQmlImportNamespace::resolveType(QQmlTypeLoader *typeLoader, const QHashedS
 {
     bool typeRecursionDetected = false;
     for (int i=0; i<imports.count(); ++i) {
-        const Import *import = imports.at(i);
+        const QQmlImportInstance *import = imports.at(i);
         if (import->resolveType(typeLoader, type, vmajor, vminor, type_return,
                                base, &typeRecursionDetected)) {
             if (qmlCheckTypes()) {
                 // check for type clashes
                 for (int j = i+1; j<imports.count(); ++j) {
-                    const Import *import2 = imports.at(j);
+                    const QQmlImportInstance *import2 = imports.at(j);
                     if (import2->resolveType(typeLoader, type, vmajor, vminor, 0, base)) {
                         if (errors) {
                             QString u1 = import->url;
@@ -949,10 +1011,12 @@ bool QQmlImportsPrivate::populatePluginPairVector(QVector<StaticPluginPair> &res
 }
 #endif
 
+#if defined(QT_SHARED) || !QT_CONFIG(library)
 static inline QString msgCannotLoadPlugin(const QString &uri, const QString &why)
 {
     return QQmlImportDatabase::tr("plugin cannot be loaded for module \"%1\": %2").arg(uri, why);
 }
+#endif
 
 /*!
 Import an extension defined by a qmldir file.
@@ -963,7 +1027,7 @@ bool QQmlImportsPrivate::importExtension(const QString &qmldirFilePath,
                                          const QString &uri,
                                          int vmaj, int vmin,
                                          QQmlImportDatabase *database,
-                                         const QQmlTypeLoader::QmldirContent *qmldir,
+                                         const QQmlTypeLoaderQmldirContent *qmldir,
                                          QList<QQmlError> *errors)
 {
 #if QT_CONFIG(library)
@@ -1099,7 +1163,7 @@ bool QQmlImportsPrivate::importExtension(const QString &qmldirFilePath,
 }
 
 bool QQmlImportsPrivate::getQmldirContent(const QString &qmldirIdentifier, const QString &uri,
-                                          const QQmlTypeLoader::QmldirContent **qmldir, QList<QQmlError> *errors)
+                                          const QQmlTypeLoaderQmldirContent **qmldir, QList<QQmlError> *errors)
 {
     Q_ASSERT(errors);
     Q_ASSERT(qmldir);
@@ -1224,7 +1288,7 @@ bool QQmlImportsPrivate::locateQmldir(const QString &uri, int vmaj, int vmin, QQ
     return false;
 }
 
-bool QQmlImportsPrivate::validateQmldirVersion(const QQmlTypeLoader::QmldirContent *qmldir, const QString &uri, int vmaj, int vmin,
+bool QQmlImportsPrivate::validateQmldirVersion(const QQmlTypeLoaderQmldirContent *qmldir, const QString &uri, int vmaj, int vmin,
                                                QList<QQmlError> *errors)
 {
     int lowest_min = INT_MAX;
@@ -1307,7 +1371,7 @@ QQmlImportNamespace *QQmlImportsPrivate::importNamespace(const QString &prefix)
     return nameSpace;
 }
 
-QQmlImportNamespace::Import *QQmlImportsPrivate::addImportToNamespace(QQmlImportNamespace *nameSpace,
+QQmlImportInstance *QQmlImportsPrivate::addImportToNamespace(QQmlImportNamespace *nameSpace,
                                                                       const QString &uri, const QString &url, int vmaj, int vmin,
                                                                       QV4::CompiledData::Import::ImportType type,
                                                                       QList<QQmlError> *errors, bool lowPrecedence)
@@ -1317,7 +1381,7 @@ QQmlImportNamespace::Import *QQmlImportsPrivate::addImportToNamespace(QQmlImport
     Q_UNUSED(errors);
     Q_ASSERT(url.isEmpty() || url.endsWith(Slash));
 
-    QQmlImportNamespace::Import *import = new QQmlImportNamespace::Import;
+    QQmlImportInstance *import = new QQmlImportInstance;
     import->uri = uri;
     import->url = url;
     import->majversion = vmaj;
@@ -1343,11 +1407,11 @@ bool QQmlImportsPrivate::addLibraryImport(const QString& uri, const QString &pre
     QQmlImportNamespace *nameSpace = importNamespace(prefix);
     Q_ASSERT(nameSpace);
 
-    QQmlImportNamespace::Import *inserted = addImportToNamespace(nameSpace, uri, qmldirUrl, vmaj, vmin, QV4::CompiledData::Import::ImportLibrary, errors);
+    QQmlImportInstance *inserted = addImportToNamespace(nameSpace, uri, qmldirUrl, vmaj, vmin, QV4::CompiledData::Import::ImportLibrary, errors);
     Q_ASSERT(inserted);
 
     if (!incomplete) {
-        const QQmlTypeLoader::QmldirContent *qmldir = 0;
+        const QQmlTypeLoaderQmldirContent *qmldir = 0;
 
         if (!qmldirIdentifier.isEmpty()) {
             if (!getQmldirContent(qmldirIdentifier, uri, &qmldir, errors))
@@ -1444,11 +1508,11 @@ bool QQmlImportsPrivate::addFileImport(const QString& uri, const QString &prefix
     if (!url.endsWith(Slash) && !url.endsWith(Backslash))
         url += Slash;
 
-    QQmlImportNamespace::Import *inserted = addImportToNamespace(nameSpace, importUri, url, vmaj, vmin, QV4::CompiledData::Import::ImportFile, errors, isImplicitImport);
+    QQmlImportInstance *inserted = addImportToNamespace(nameSpace, importUri, url, vmaj, vmin, QV4::CompiledData::Import::ImportFile, errors, isImplicitImport);
     Q_ASSERT(inserted);
 
     if (!incomplete && !qmldirIdentifier.isEmpty()) {
-        const QQmlTypeLoader::QmldirContent *qmldir = 0;
+        const QQmlTypeLoaderQmldirContent *qmldir = 0;
         if (!getQmldirContent(qmldirIdentifier, importUri, &qmldir, errors))
             return false;
 
@@ -1471,8 +1535,8 @@ bool QQmlImportsPrivate::updateQmldirContent(const QString &uri, const QString &
     QQmlImportNamespace *nameSpace = importNamespace(prefix);
     Q_ASSERT(nameSpace);
 
-    if (QQmlImportNamespace::Import *import = nameSpace->findImport(uri)) {
-        const QQmlTypeLoader::QmldirContent *qmldir = 0;
+    if (QQmlImportInstance *import = nameSpace->findImport(uri)) {
+        const QQmlTypeLoaderQmldirContent *qmldir = 0;
         if (!getQmldirContent(qmldirIdentifier, uri, &qmldir, errors))
             return false;
 
diff --git a/src/qml/qml/qqmlimport_p.h b/src/qml/qml/qqmlimport_p.h
index 0e7848730f..7c691a468c 100644
--- a/src/qml/qml/qqmlimport_p.h
+++ b/src/qml/qml/qqmlimport_p.h
@@ -68,6 +68,48 @@ class QQmlImportNamespace;
 class QQmlImportsPrivate;
 class QQmlImportDatabase;
 class QQmlTypeLoader;
+class QQmlTypeLoaderQmldirContent;
+
+struct QQmlImportInstance
+{
+    QString uri; // e.g. QtQuick
+    QString url; // the base path of the import
+    int majversion; // the major version imported
+    int minversion; // the minor version imported
+    bool isLibrary; // true means that this is not a file import
+    QQmlDirComponents qmlDirComponents; // a copy of the components listed in the qmldir
+    QQmlDirScripts qmlDirScripts; // a copy of the scripts in the qmldir
+
+    bool setQmldirContent(const QString &resolvedUrl, const QQmlTypeLoaderQmldirContent *qmldir,
+                          QQmlImportNamespace *nameSpace, QList<QQmlError> *errors);
+
+    static QQmlDirScripts getVersionedScripts(const QQmlDirScripts &qmldirscripts, int vmaj, int vmin);
+
+    bool resolveType(QQmlTypeLoader *typeLoader, const QHashedStringRef &type,
+                     int *vmajor, int *vminor, QQmlType** type_return,
+                     QString *base = 0, bool *typeRecursionDetected = 0) const;
+};
+
+class QQmlImportNamespace
+{
+public:
+    QQmlImportNamespace() : nextNamespace(0) {}
+    ~QQmlImportNamespace() { qDeleteAll(imports); }
+
+    QList<QQmlImportInstance *> imports;
+
+    QQmlImportInstance *findImport(const QString &uri) const;
+
+    bool resolveType(QQmlTypeLoader *typeLoader, const QHashedStringRef& type,
+                     int *vmajor, int *vminor, QQmlType** type_return,
+                     QString *base = 0, QList<QQmlError> *errors = 0);
+
+    // Prefix when used as a qualified import.  Otherwise empty.
+    QHashedString prefix;
+
+    // Used by QQmlImportsPrivate::qualifiedSets
+    QQmlImportNamespace *nextNamespace;
+};
 
 class Q_QML_PRIVATE_EXPORT QQmlImports
 {
diff --git a/src/qml/qml/qqmllistwrapper.cpp b/src/qml/qml/qqmllistwrapper.cpp
index 8aa107dc17..43677e0d78 100644
--- a/src/qml/qml/qqmllistwrapper.cpp
+++ b/src/qml/qml/qqmllistwrapper.cpp
@@ -140,12 +140,13 @@ ReturnedValue QmlListWrapper::getIndexed(const Managed *m, uint index, bool *has
     return Primitive::undefinedValue().asReturnedValue();
 }
 
-void QmlListWrapper::put(Managed *m, String *name, const Value &value)
+bool QmlListWrapper::put(Managed *m, String *name, const Value &value)
 {
     // doesn't do anything. Should we throw?
     Q_UNUSED(m);
     Q_UNUSED(name);
     Q_UNUSED(value);
+    return false;
 }
 
 void QmlListWrapper::advanceIterator(Managed *m, ObjectIterator *it, Value *name, uint *index, Property *p, PropertyAttributes *attrs)
@@ -165,4 +166,29 @@ void QmlListWrapper::advanceIterator(Managed *m, ObjectIterator *it, Value *name
     return QV4::Object::advanceIterator(m, it, name, index, p, attrs);
 }
 
+void PropertyListPrototype::init(ExecutionEngine *)
+{
+    defineDefaultProperty(QStringLiteral("push"), method_push, 1);
+}
+
+void PropertyListPrototype::method_push(const BuiltinFunction *, Scope &scope, CallData *callData)
+{
+    ScopedObject instance(scope, callData->thisObject.toObject(scope.engine));
+    if (!instance)
+        RETURN_UNDEFINED();
+    QmlListWrapper *w = instance->as<QmlListWrapper>();
+    if (!w)
+        RETURN_UNDEFINED();
+    if (!w->d()->property().append)
+        THROW_GENERIC_ERROR("List doesn't define an Append function");
+
+    QV4::ScopedObject so(scope);
+    for (int i = 0; i < callData->argc; ++i)
+    {
+        so = callData->args[i].toObject(scope.engine);
+        if (QV4::QObjectWrapper *wrapper = so->as<QV4::QObjectWrapper>())
+            w->d()->property().append(&w->d()->property(), wrapper->object() );
+    }
+}
+
 QT_END_NAMESPACE
diff --git a/src/qml/qml/qqmllistwrapper_p.h b/src/qml/qml/qqmllistwrapper_p.h
index d01b332159..84dadba01a 100644
--- a/src/qml/qml/qqmllistwrapper_p.h
+++ b/src/qml/qml/qqmllistwrapper_p.h
@@ -86,6 +86,7 @@ struct Q_QML_EXPORT QmlListWrapper : Object
 {
     V4_OBJECT2(QmlListWrapper, Object)
     V4_NEEDS_DESTROY
+    V4_PROTOTYPE(propertyListPrototype)
 
     static ReturnedValue create(ExecutionEngine *engine, QObject *object, int propId, int propType);
     static ReturnedValue create(ExecutionEngine *engine, const QQmlListProperty<QObject> &prop, int propType);
@@ -94,10 +95,17 @@ struct Q_QML_EXPORT QmlListWrapper : Object
 
     static ReturnedValue get(const Managed *m, String *name, bool *hasProperty);
     static ReturnedValue getIndexed(const Managed *m, uint index, bool *hasProperty);
-    static void put(Managed *m, String *name, const Value &value);
+    static bool put(Managed *m, String *name, const Value &value);
     static void advanceIterator(Managed *m, ObjectIterator *it, Value *name, uint *index, Property *p, PropertyAttributes *attributes);
 };
 
+struct PropertyListPrototype : Object
+{
+    void init(ExecutionEngine *engine);
+
+    static void method_push(const BuiltinFunction *, Scope &, CallData *callData);
+};
+
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/qml/qqmlmetatype.cpp b/src/qml/qml/qqmlmetatype.cpp
index 520c44f4da..bd6b9a1599 100644
--- a/src/qml/qml/qqmlmetatype.cpp
+++ b/src/qml/qml/qqmlmetatype.cpp
@@ -79,7 +79,7 @@ struct QQmlMetaTypeData
     Files urlToNonFileImportType; // For non-file imported composite and composite
                                   // singleton types. This way we can locate any
                                   // of them by url, even if it was registered as
-                                  // a module via qmlRegisterCompositeType.
+                                  // a module via QQmlPrivate::RegisterCompositeType
     typedef QHash<const QMetaObject *, QQmlType *> MetaObjects;
     MetaObjects metaObjectToType;
     typedef QHash<int, QQmlMetaType::StringConverter> StringConverters;
diff --git a/src/qml/qml/qqmlobjectcreator.cpp b/src/qml/qml/qqmlobjectcreator.cpp
index 38a16b8cde..85fbd86dc4 100644
--- a/src/qml/qml/qqmlobjectcreator.cpp
+++ b/src/qml/qml/qqmlobjectcreator.cpp
@@ -170,7 +170,7 @@ QObject *QQmlObjectCreator::create(int subComponentIndex, QObject *parent, QQmlI
 
     context = new QQmlContextData;
     context->isInternal = true;
-    context->imports = compilationUnit->importCache;
+    context->imports = compilationUnit->typeNameCache;
     context->initFromTypeCompilationUnit(compilationUnit, subComponentIndex);
     context->setParent(parentContext);
 
@@ -1150,7 +1150,7 @@ QObject *QQmlObjectCreator::createInstance(int index, QObject *parent, bool isCo
 
     if (customParser && obj->flags & QV4::CompiledData::Object::HasCustomParserBindings) {
         customParser->engine = QQmlEnginePrivate::get(engine);
-        customParser->imports = compilationUnit->importCache;
+        customParser->imports = compilationUnit->typeNameCache;
 
         QList<const QV4::CompiledData::Binding *> bindings;
         const QV4::CompiledData::Object *obj = qmlUnit->objectAt(index);
diff --git a/src/qml/qml/qqmlpropertycache.cpp b/src/qml/qml/qqmlpropertycache.cpp
index 562aa1c88a..88ce2fa1b9 100644
--- a/src/qml/qml/qqmlpropertycache.cpp
+++ b/src/qml/qml/qqmlpropertycache.cpp
@@ -76,7 +76,8 @@ public:
     int argumentsValid:1;
 
     QList<QByteArray> *names;
-    int arguments[0];
+
+    int arguments[1];
 };
 
 // Flags that do *NOT* depend on the property's QMetaProperty::userType() and thus are quick
@@ -919,7 +920,7 @@ static int EnumType(const QMetaObject *metaobj, const QByteArray &str, int type)
 QQmlPropertyCacheMethodArguments *QQmlPropertyCache::createArgumentsObject(int argc, const QList<QByteArray> &names)
 {
     typedef QQmlPropertyCacheMethodArguments A;
-    A *args = static_cast<A *>(malloc(sizeof(A) + (argc + 1) * sizeof(int)));
+    A *args = static_cast<A *>(malloc(sizeof(A) + (argc) * sizeof(int)));
     args->arguments[0] = argc;
     args->argumentsValid = false;
     args->signalParameterStringForJS = 0;
diff --git a/src/qml/qml/qqmltypeloader.cpp b/src/qml/qml/qqmltypeloader.cpp
index 5b1bba46dd..f4f04e12c0 100644
--- a/src/qml/qml/qqmltypeloader.cpp
+++ b/src/qml/qml/qqmltypeloader.cpp
@@ -1362,7 +1362,7 @@ bool QQmlTypeLoader::Blob::updateQmldir(QQmlQmldirData *data, const QV4::Compile
     if (!importQualifier.isEmpty()) {
         // Does this library contain any qualified scripts?
         QUrl libraryUrl(qmldirUrl);
-        const QmldirContent *qmldir = typeLoader()->qmldirContent(qmldirIdentifier);
+        const QQmlTypeLoaderQmldirContent *qmldir = typeLoader()->qmldirContent(qmldirIdentifier);
         const auto qmldirScripts = qmldir->scripts();
         for (const QQmlDirParser::Script &script : qmldirScripts) {
             QUrl scriptUrl = libraryUrl.resolved(QUrl(script.fileName));
@@ -1410,7 +1410,7 @@ bool QQmlTypeLoader::Blob::addImport(const QV4::CompiledData::Import *import, QL
             if (!importQualifier.isEmpty()) {
                 // Does this library contain any qualified scripts?
                 QUrl libraryUrl(qmldirUrl);
-                const QmldirContent *qmldir = typeLoader()->qmldirContent(qmldirFilePath);
+                const QQmlTypeLoaderQmldirContent *qmldir = typeLoader()->qmldirContent(qmldirFilePath);
                 const auto qmldirScripts = qmldir->scripts();
                 for (const QQmlDirParser::Script &script : qmldirScripts) {
                     QUrl scriptUrl = libraryUrl.resolved(QUrl(script.fileName));
@@ -1539,57 +1539,57 @@ bool QQmlTypeLoader::Blob::qmldirDataAvailable(QQmlQmldirData *data, QList<QQmlE
 }
 
 
-QQmlTypeLoader::QmldirContent::QmldirContent()
+QQmlTypeLoaderQmldirContent::QQmlTypeLoaderQmldirContent()
 {
 }
 
-bool QQmlTypeLoader::QmldirContent::hasError() const
+bool QQmlTypeLoaderQmldirContent::hasError() const
 {
     return m_parser.hasError();
 }
 
-QList<QQmlError> QQmlTypeLoader::QmldirContent::errors(const QString &uri) const
+QList<QQmlError> QQmlTypeLoaderQmldirContent::errors(const QString &uri) const
 {
     return m_parser.errors(uri);
 }
 
-QString QQmlTypeLoader::QmldirContent::typeNamespace() const
+QString QQmlTypeLoaderQmldirContent::typeNamespace() const
 {
     return m_parser.typeNamespace();
 }
 
-void QQmlTypeLoader::QmldirContent::setContent(const QString &location, const QString &content)
+void QQmlTypeLoaderQmldirContent::setContent(const QString &location, const QString &content)
 {
     m_location = location;
     m_parser.parse(content);
 }
 
-void QQmlTypeLoader::QmldirContent::setError(const QQmlError &error)
+void QQmlTypeLoaderQmldirContent::setError(const QQmlError &error)
 {
     m_parser.setError(error);
 }
 
-QQmlDirComponents QQmlTypeLoader::QmldirContent::components() const
+QQmlDirComponents QQmlTypeLoaderQmldirContent::components() const
 {
     return m_parser.components();
 }
 
-QQmlDirScripts QQmlTypeLoader::QmldirContent::scripts() const
+QQmlDirScripts QQmlTypeLoaderQmldirContent::scripts() const
 {
     return m_parser.scripts();
 }
 
-QQmlDirPlugins QQmlTypeLoader::QmldirContent::plugins() const
+QQmlDirPlugins QQmlTypeLoaderQmldirContent::plugins() const
 {
     return m_parser.plugins();
 }
 
-QString QQmlTypeLoader::QmldirContent::pluginLocation() const
+QString QQmlTypeLoaderQmldirContent::pluginLocation() const
 {
     return m_location;
 }
 
-bool QQmlTypeLoader::QmldirContent::designerSupported() const
+bool QQmlTypeLoaderQmldirContent::designerSupported() const
 {
     return m_parser.designerSupported();
 }
@@ -1861,13 +1861,13 @@ bool QQmlTypeLoader::directoryExists(const QString &path)
 
 
 /*!
-Return a QmldirContent for absoluteFilePath.  The QmldirContent may be cached.
+Return a QQmlTypeLoaderQmldirContent for absoluteFilePath.  The QQmlTypeLoaderQmldirContent may be cached.
 
 \a filePath is a local file path.
 
 It can also be a remote path for a remote directory import, but it will have been cached by now in this case.
 */
-const QQmlTypeLoader::QmldirContent *QQmlTypeLoader::qmldirContent(const QString &filePathIn)
+const QQmlTypeLoaderQmldirContent *QQmlTypeLoader::qmldirContent(const QString &filePathIn)
 {
     QUrl url(filePathIn); //May already contain http scheme
     if (url.scheme() == QLatin1String("http") || url.scheme() == QLatin1String("https"))
@@ -1883,10 +1883,10 @@ const QQmlTypeLoader::QmldirContent *QQmlTypeLoader::qmldirContent(const QString
     else
         filePath = url.path();
 
-    QmldirContent *qmldir;
-    QmldirContent **val = m_importQmlDirCache.value(filePath);
+    QQmlTypeLoaderQmldirContent *qmldir;
+    QQmlTypeLoaderQmldirContent **val = m_importQmlDirCache.value(filePath);
     if (!val) {
-        qmldir = new QmldirContent;
+        qmldir = new QQmlTypeLoaderQmldirContent;
 
 #define ERROR(description) { QQmlError e; e.setDescription(description); qmldir->setError(e); }
 #define NOT_READABLE_ERROR QString(QLatin1String("module \"$$URI$$\" definition \"%1\" not readable"))
@@ -1916,12 +1916,12 @@ const QQmlTypeLoader::QmldirContent *QQmlTypeLoader::qmldirContent(const QString
 
 void QQmlTypeLoader::setQmldirContent(const QString &url, const QString &content)
 {
-    QmldirContent *qmldir;
-    QmldirContent **val = m_importQmlDirCache.value(url);
+    QQmlTypeLoaderQmldirContent *qmldir;
+    QQmlTypeLoaderQmldirContent **val = m_importQmlDirCache.value(url);
     if (val) {
         qmldir = *val;
     } else {
-        qmldir = new QmldirContent;
+        qmldir = new QQmlTypeLoaderQmldirContent;
         m_importQmlDirCache.insert(url, qmldir);
     }
 
@@ -2075,6 +2075,11 @@ bool QQmlTypeData::tryLoadFromDiskCache()
         }
     }
 
+    if (unit->data->flags & QV4::CompiledData::Unit::PendingTypeCompilation) {
+        restoreIR(unit);
+        return true;
+    }
+
     m_compiledData = unit;
 
     for (int i = 0, count = m_compiledData->objectCount(); i < count; ++i)
@@ -2127,11 +2132,11 @@ bool QQmlTypeData::tryLoadFromDiskCache()
     return true;
 }
 
-void QQmlTypeData::createTypeAndPropertyCaches(const QQmlRefPointer<QQmlTypeNameCache> &importCache,
+void QQmlTypeData::createTypeAndPropertyCaches(const QQmlRefPointer<QQmlTypeNameCache> &typeNameCache,
                                                 const QV4::CompiledData::ResolvedTypeReferenceMap &resolvedTypeCache)
 {
     Q_ASSERT(m_compiledData);
-    m_compiledData->importCache = importCache;
+    m_compiledData->typeNameCache = typeNameCache;
     m_compiledData->resolvedTypes = resolvedTypeCache;
 
     QQmlEnginePrivate * const engine = QQmlEnginePrivate::get(typeLoader()->engine());
@@ -2217,10 +2222,10 @@ void QQmlTypeData::done()
         }
     }
 
-    QQmlRefPointer<QQmlTypeNameCache> importCache;
+    QQmlRefPointer<QQmlTypeNameCache> typeNameCache;
     QV4::CompiledData::ResolvedTypeReferenceMap resolvedTypeCache;
     {
-        QQmlCompileError error = buildTypeResolutionCaches(&importCache, &resolvedTypeCache);
+        QQmlCompileError error = buildTypeResolutionCaches(&typeNameCache, &resolvedTypeCache);
         if (error.isSet()) {
             setError(error);
             return;
@@ -2240,9 +2245,9 @@ void QQmlTypeData::done()
 
     if (!m_document.isNull()) {
         // Compile component
-        compile(importCache, resolvedTypeCache);
+        compile(typeNameCache, resolvedTypeCache);
     } else {
-        createTypeAndPropertyCaches(importCache, resolvedTypeCache);
+        createTypeAndPropertyCaches(typeNameCache, resolvedTypeCache);
     }
 
     if (isError())
@@ -2303,7 +2308,7 @@ void QQmlTypeData::done()
                 qualifier = qualifier.mid(lastDotIndex+1);
             }
 
-            m_compiledData->importCache->add(qualifier.toString(), scriptIndex, enclosingNamespace);
+            m_compiledData->typeNameCache->add(qualifier.toString(), scriptIndex, enclosingNamespace);
             QQmlScriptData *scriptData = script.script->scriptData();
             scriptData->addref();
             m_compiledData->dependentScripts << scriptData;
@@ -2397,6 +2402,15 @@ bool QQmlTypeData::loadFromSource()
     return true;
 }
 
+void QQmlTypeData::restoreIR(QQmlRefPointer<QV4::CompiledData::CompilationUnit> unit)
+{
+    m_document.reset(new QmlIR::Document(isDebugging()));
+    QmlIR::IRLoader loader(unit->data, m_document.data());
+    loader.load();
+    m_document->javaScriptCompilationUnit = unit;
+    continueLoadFromIR();
+}
+
 void QQmlTypeData::continueLoadFromIR()
 {
     m_typeReferences.collectFromObjects(m_document->objects.constBegin(), m_document->objects.constEnd());
@@ -2489,12 +2503,12 @@ QString QQmlTypeData::stringAt(int index) const
     return m_document->jsGenerator.stringTable.stringForIndex(index);
 }
 
-void QQmlTypeData::compile(const QQmlRefPointer<QQmlTypeNameCache> &importCache, const QV4::CompiledData::ResolvedTypeReferenceMap &resolvedTypeCache)
+void QQmlTypeData::compile(const QQmlRefPointer<QQmlTypeNameCache> &typeNameCache, const QV4::CompiledData::ResolvedTypeReferenceMap &resolvedTypeCache)
 {
     Q_ASSERT(m_compiledData.isNull());
 
     QQmlEnginePrivate * const enginePrivate = QQmlEnginePrivate::get(typeLoader()->engine());
-    QQmlTypeCompiler compiler(enginePrivate, this, m_document.data(), importCache, resolvedTypeCache);
+    QQmlTypeCompiler compiler(enginePrivate, this, m_document.data(), typeNameCache, resolvedTypeCache);
     m_compiledData = compiler.compile();
     if (!m_compiledData) {
         setError(compiler.compilationErrors());
@@ -2598,20 +2612,20 @@ void QQmlTypeData::resolveTypes()
 }
 
 QQmlCompileError QQmlTypeData::buildTypeResolutionCaches(
-        QQmlRefPointer<QQmlTypeNameCache> *importCache,
+        QQmlRefPointer<QQmlTypeNameCache> *typeNameCache,
         QV4::CompiledData::ResolvedTypeReferenceMap *resolvedTypeCache
         ) const
 {
-    importCache->adopt(new QQmlTypeNameCache);
+    typeNameCache->adopt(new QQmlTypeNameCache(m_importCache));
 
     for (const QString &ns: m_namespaces)
-        (*importCache)->add(ns);
+        (*typeNameCache)->add(ns);
 
     // Add any Composite Singletons that were used to the import cache
     for (const QQmlTypeData::TypeReference &singleton: m_compositeSingletons)
-        (*importCache)->add(singleton.type->qmlTypeName(), singleton.type->sourceUrl(), singleton.prefix);
+        (*typeNameCache)->add(singleton.type->qmlTypeName(), singleton.type->sourceUrl(), singleton.prefix);
 
-    m_importCache.populateCache(*importCache);
+    m_importCache.populateCache(*typeNameCache);
 
     QQmlEnginePrivate * const engine = QQmlEnginePrivate::get(typeLoader()->engine());
 
@@ -2710,7 +2724,7 @@ void QQmlTypeData::scriptImported(QQmlScriptBlob *blob, const QV4::CompiledData:
 }
 
 QQmlScriptData::QQmlScriptData()
-    : importCache(0)
+    : typeNameCache(0)
     , m_loaded(false)
     , m_program(0)
 {
@@ -2767,8 +2781,8 @@ QV4::ReturnedValue QQmlScriptData::scriptValueForContext(QQmlContextData *parent
 
     // For backward compatibility, if there are no imports, we need to use the
     // imports from the parent context.  See QTBUG-17518.
-    if (!importCache->isEmpty()) {
-        ctxt->imports = importCache;
+    if (!typeNameCache->isEmpty()) {
+        ctxt->imports = typeNameCache;
     } else if (effectiveCtxt) {
         ctxt->imports = effectiveCtxt->imports;
         ctxt->importedScripts = effectiveCtxt->importedScripts;
@@ -2823,9 +2837,9 @@ QV4::ReturnedValue QQmlScriptData::scriptValueForContext(QQmlContextData *parent
 
 void QQmlScriptData::clear()
 {
-    if (importCache) {
-        importCache->release();
-        importCache = 0;
+    if (typeNameCache) {
+        typeNameCache->release();
+        typeNameCache = 0;
     }
 
     for (int ii = 0; ii < scripts.count(); ++ii)
@@ -2946,7 +2960,7 @@ void QQmlScriptBlob::done()
         }
     }
 
-    m_scriptData->importCache = new QQmlTypeNameCache();
+    m_scriptData->typeNameCache = new QQmlTypeNameCache(m_importCache);
 
     QSet<QString> ns;
 
@@ -2958,13 +2972,13 @@ void QQmlScriptBlob::done()
         if (!script.nameSpace.isNull()) {
             if (!ns.contains(script.nameSpace)) {
                 ns.insert(script.nameSpace);
-                m_scriptData->importCache->add(script.nameSpace);
+                m_scriptData->typeNameCache->add(script.nameSpace);
             }
         }
-        m_scriptData->importCache->add(script.qualifier, scriptIndex, script.nameSpace);
+        m_scriptData->typeNameCache->add(script.qualifier, scriptIndex, script.nameSpace);
     }
 
-    m_importCache.populateCache(m_scriptData->importCache);
+    m_importCache.populateCache(m_scriptData->typeNameCache);
 }
 
 QString QQmlScriptBlob::stringAt(int index) const
diff --git a/src/qml/qml/qqmltypeloader_p.h b/src/qml/qml/qqmltypeloader_p.h
index c60435a2d6..915b1bcc4c 100644
--- a/src/qml/qml/qqmltypeloader_p.h
+++ b/src/qml/qml/qqmltypeloader_p.h
@@ -218,6 +218,34 @@ private:
 
 class QQmlTypeLoaderThread;
 
+class QQmlTypeLoaderQmldirContent
+{
+private:
+    friend class QQmlTypeLoader;
+    QQmlTypeLoaderQmldirContent();
+
+    void setContent(const QString &location, const QString &content);
+    void setError(const QQmlError &);
+
+public:
+    bool hasError() const;
+    QList<QQmlError> errors(const QString &uri) const;
+
+    QString typeNamespace() const;
+
+    QQmlDirComponents components() const;
+    QQmlDirScripts scripts() const;
+    QQmlDirPlugins plugins() const;
+
+    QString pluginLocation() const;
+
+    bool designerSupported() const;
+
+private:
+    QQmlDirParser m_parser;
+    QString m_location;
+};
+
 class Q_AUTOTEST_EXPORT QQmlTypeLoader
 {
     Q_DECLARE_TR_FUNCTIONS(QQmlTypeLoader)
@@ -256,34 +284,6 @@ public:
         QList<QQmlQmldirData *> m_qmldirs;
     };
 
-    class QmldirContent
-    {
-    private:
-        friend class QQmlTypeLoader;
-        QmldirContent();
-
-        void setContent(const QString &location, const QString &content);
-        void setError(const QQmlError &);
-
-    public:
-        bool hasError() const;
-        QList<QQmlError> errors(const QString &uri) const;
-
-        QString typeNamespace() const;
-
-        QQmlDirComponents components() const;
-        QQmlDirScripts scripts() const;
-        QQmlDirPlugins plugins() const;
-
-        QString pluginLocation() const;
-
-        bool designerSupported() const;
-
-    private:
-        QQmlDirParser m_parser;
-        QString m_location;
-    };
-
     QQmlTypeLoader(QQmlEngine *);
     ~QQmlTypeLoader();
 
@@ -298,7 +298,7 @@ public:
     QString absoluteFilePath(const QString &path);
     bool directoryExists(const QString &path);
 
-    const QmldirContent *qmldirContent(const QString &filePath);
+    const QQmlTypeLoaderQmldirContent *qmldirContent(const QString &filePath);
     void setQmldirContent(const QString &filePath, const QString &content);
 
     void clearCache();
@@ -363,7 +363,7 @@ private:
     typedef QHash<QUrl, QQmlQmldirData *> QmldirCache;
     typedef QStringHash<bool> StringSet;
     typedef QStringHash<StringSet*> ImportDirCache;
-    typedef QStringHash<QmldirContent *> ImportQmlDirCache;
+    typedef QStringHash<QQmlTypeLoaderQmldirContent *> ImportQmlDirCache;
 
     QQmlEngine *m_engine;
     QQmlTypeLoaderThread *m_thread;
@@ -446,15 +446,16 @@ protected:
 private:
     bool tryLoadFromDiskCache();
     bool loadFromSource();
+    void restoreIR(QQmlRefPointer<QV4::CompiledData::CompilationUnit> unit);
     void continueLoadFromIR();
     void resolveTypes();
     QQmlCompileError buildTypeResolutionCaches(
-            QQmlRefPointer<QQmlTypeNameCache> *importCache,
+            QQmlRefPointer<QQmlTypeNameCache> *typeNameCache,
             QV4::CompiledData::ResolvedTypeReferenceMap *resolvedTypeCache
             ) const;
-    void compile(const QQmlRefPointer<QQmlTypeNameCache> &importCache,
+    void compile(const QQmlRefPointer<QQmlTypeNameCache> &typeNameCache,
                  const QV4::CompiledData::ResolvedTypeReferenceMap &resolvedTypeCache);
-    void createTypeAndPropertyCaches(const QQmlRefPointer<QQmlTypeNameCache> &importCache,
+    void createTypeAndPropertyCaches(const QQmlRefPointer<QQmlTypeNameCache> &typeNameCache,
                                       const QV4::CompiledData::ResolvedTypeReferenceMap &resolvedTypeCache);
     bool resolveType(const QString &typeName, int &majorVersion, int &minorVersion, TypeReference &ref, int lineNumber = -1, int columnNumber = -1, bool reportErrors = true);
 
@@ -504,7 +505,7 @@ public:
 
     QUrl url;
     QString urlString;
-    QQmlTypeNameCache *importCache;
+    QQmlTypeNameCache *typeNameCache;
     QList<QQmlScriptBlob *> scripts;
 
     QV4::ReturnedValue scriptValueForContext(QQmlContextData *parentCtxt);
diff --git a/src/qml/qml/qqmltypenamecache.cpp b/src/qml/qml/qqmltypenamecache.cpp
index c2098bc9a1..c8e2b92c29 100644
--- a/src/qml/qml/qqmltypenamecache.cpp
+++ b/src/qml/qml/qqmltypenamecache.cpp
@@ -43,7 +43,8 @@
 
 QT_BEGIN_NAMESPACE
 
-QQmlTypeNameCache::QQmlTypeNameCache()
+QQmlTypeNameCache::QQmlTypeNameCache(const QQmlImports &importCache)
+    : m_imports(importCache)
 {
 }
 
@@ -70,6 +71,7 @@ void QQmlTypeNameCache::add(const QHashedString &name, int importedScriptIndex,
 {
     Import import;
     import.scriptIndex = importedScriptIndex;
+    import.m_qualifier = name;
 
     if (nameSpace.length() != 0) {
         Import *i = m_namedImports.value(nameSpace);
@@ -94,6 +96,18 @@ QQmlTypeNameCache::Result QQmlTypeNameCache::query(const QHashedStringRef &name)
     if (!result.isValid())
         result = query(m_anonymousCompositeSingletons, name);
 
+    if (!result.isValid()) {
+        // Look up anonymous types from the imports of this document
+        QQmlImportNamespace *typeNamespace = 0;
+        QList<QQmlError> errors;
+        QQmlType *t = 0;
+        bool typeFound = m_imports.resolveType(name, &t, 0, 0, &typeNamespace, &errors);
+        if (typeFound) {
+            return Result(t);
+        }
+
+    }
+
     return result;
 }
 
@@ -109,6 +123,20 @@ QQmlTypeNameCache::Result QQmlTypeNameCache::query(const QHashedStringRef &name,
     if (!result.isValid())
         result = query(i->compositeSingletons, name);
 
+    if (!result.isValid()) {
+        // Look up types from the imports of this document
+        // ### it would be nice if QQmlImports allowed us to resolve a namespace
+        // first, and then types on it.
+        QString qualifiedTypeName = i->m_qualifier + QLatin1Char('.') + name.toString();
+        QQmlImportNamespace *typeNamespace = 0;
+        QList<QQmlError> errors;
+        QQmlType *t = 0;
+        bool typeFound = m_imports.resolveType(qualifiedTypeName, &t, 0, 0, &typeNamespace, &errors);
+        if (typeFound) {
+            return Result(t);
+        }
+    }
+
     return result;
 }
 
@@ -122,6 +150,19 @@ QQmlTypeNameCache::Result QQmlTypeNameCache::query(const QV4::String *name) cons
     if (!result.isValid())
         result = query(m_anonymousCompositeSingletons, name);
 
+    if (!result.isValid()) {
+        // Look up anonymous types from the imports of this document
+        QString typeName = name->toQStringNoThrow();
+        QQmlImportNamespace *typeNamespace = 0;
+        QList<QQmlError> errors;
+        QQmlType *t = 0;
+        bool typeFound = m_imports.resolveType(typeName, &t, 0, 0, &typeNamespace, &errors);
+        if (typeFound) {
+            return Result(t);
+        }
+
+    }
+
     return result;
 }
 
@@ -143,6 +184,20 @@ QQmlTypeNameCache::Result QQmlTypeNameCache::query(const QV4::String *name, cons
     if (!r.isValid())
         r = query(i->compositeSingletons, name);
 
+    if (!r.isValid()) {
+        // Look up types from the imports of this document
+        // ### it would be nice if QQmlImports allowed us to resolve a namespace
+        // first, and then types on it.
+        QString qualifiedTypeName = i->m_qualifier + QLatin1Char('.') + name->toQStringNoThrow();
+        QQmlImportNamespace *typeNamespace = 0;
+        QList<QQmlError> errors;
+        QQmlType *t = 0;
+        bool typeFound = m_imports.resolveType(qualifiedTypeName, &t, 0, 0, &typeNamespace, &errors);
+        if (typeFound) {
+            return Result(t);
+        }
+    }
+
     return r;
 }
 
diff --git a/src/qml/qml/qqmltypenamecache_p.h b/src/qml/qml/qqmltypenamecache_p.h
index 8a387bed5f..7cdcbe91b6 100644
--- a/src/qml/qml/qqmltypenamecache_p.h
+++ b/src/qml/qml/qqmltypenamecache_p.h
@@ -56,6 +56,7 @@
 #include "qqmlmetatype_p.h"
 
 #include <private/qhashedstring_p.h>
+#include <private/qqmlimport_p.h>
 
 #include <QtCore/qvector.h>
 
@@ -66,7 +67,7 @@ class QQmlEngine;
 class QQmlTypeNameCache : public QQmlRefCount
 {
 public:
-    QQmlTypeNameCache();
+    QQmlTypeNameCache(const QQmlImports &imports);
     virtual ~QQmlTypeNameCache();
 
     inline bool isEmpty() const;
@@ -105,6 +106,9 @@ private:
 
         // Or, imported compositeSingletons
         QStringHash<QUrl> compositeSingletons;
+
+        // The qualifier of this import
+        QString m_qualifier;
     };
 
     template<typename Key>
@@ -112,6 +116,7 @@ private:
     {
         Import *i = imports.value(key);
         if (i) {
+            Q_ASSERT(!i->m_qualifier.isEmpty());
             if (i->scriptIndex != -1) {
                 return Result(i->scriptIndex);
             } else {
@@ -151,6 +156,7 @@ private:
     QMap<const Import *, QStringHash<Import> > m_namespacedImports;
     QVector<QQmlTypeModuleVersion> m_anonymousImports;
     QStringHash<QUrl> m_anonymousCompositeSingletons;
+    QQmlImports m_imports;
 };
 
 QQmlTypeNameCache::Result::Result()
diff --git a/src/qml/qml/qqmltypewrapper.cpp b/src/qml/qml/qqmltypewrapper.cpp
index fd1e9cc2be..c4422afa9c 100644
--- a/src/qml/qml/qqmltypewrapper.cpp
+++ b/src/qml/qml/qqmltypewrapper.cpp
@@ -275,13 +275,13 @@ ReturnedValue QmlTypeWrapper::get(const Managed *m, String *name, bool *hasPrope
 }
 
 
-void QmlTypeWrapper::put(Managed *m, String *name, const Value &value)
+bool QmlTypeWrapper::put(Managed *m, String *name, const Value &value)
 {
     Q_ASSERT(m->as<QmlTypeWrapper>());
     QmlTypeWrapper *w = static_cast<QmlTypeWrapper *>(m);
     QV4::ExecutionEngine *v4 = w->engine();
     if (v4->hasException)
-        return;
+        return false;
 
     QV4::Scope scope(v4);
     QQmlContextData *context = v4->callingQmlContext();
@@ -292,7 +292,8 @@ void QmlTypeWrapper::put(Managed *m, String *name, const Value &value)
         QQmlEngine *e = scope.engine->qmlEngine();
         QObject *ao = qmlAttachedPropertiesObjectById(type->attachedPropertiesId(QQmlEnginePrivate::get(e)), object);
         if (ao)
-            QV4::QObjectWrapper::setQmlProperty(v4, context, ao, name, QV4::QObjectWrapper::IgnoreRevision, value);
+            return QV4::QObjectWrapper::setQmlProperty(v4, context, ao, name, QV4::QObjectWrapper::IgnoreRevision, value);
+        return false;
     } else if (type && type->isSingleton()) {
         QQmlEngine *e = scope.engine->qmlEngine();
         QQmlType::SingletonInstanceInfo *siinfo = type->singletonInstanceInfo();
@@ -300,18 +301,20 @@ void QmlTypeWrapper::put(Managed *m, String *name, const Value &value)
 
         QObject *qobjectSingleton = siinfo->qobjectApi(e);
         if (qobjectSingleton) {
-            QV4::QObjectWrapper::setQmlProperty(v4, context, qobjectSingleton, name, QV4::QObjectWrapper::IgnoreRevision, value);
+            return QV4::QObjectWrapper::setQmlProperty(v4, context, qobjectSingleton, name, QV4::QObjectWrapper::IgnoreRevision, value);
         } else if (!siinfo->scriptApi(e).isUndefined()) {
             QV4::ScopedObject apiprivate(scope, QJSValuePrivate::convertedToValue(v4, siinfo->scriptApi(e)));
             if (!apiprivate) {
                 QString error = QLatin1String("Cannot assign to read-only property \"") + name->toQString() + QLatin1Char('\"');
                 v4->throwError(error);
-                return;
+                return false;
             } else {
-                apiprivate->put(name, value);
+                return apiprivate->put(name, value);
             }
         }
     }
+
+    return false;
 }
 
 PropertyAttributes QmlTypeWrapper::query(const Managed *m, String *name)
diff --git a/src/qml/qml/qqmltypewrapper_p.h b/src/qml/qml/qqmltypewrapper_p.h
index 3b0ae04cc1..cfb6cb0ec9 100644
--- a/src/qml/qml/qqmltypewrapper_p.h
+++ b/src/qml/qml/qqmltypewrapper_p.h
@@ -100,7 +100,7 @@ struct Q_QML_EXPORT QmlTypeWrapper : Object
 
 
     static ReturnedValue get(const Managed *m, String *name, bool *hasProperty);
-    static void put(Managed *m, String *name, const Value &value);
+    static bool put(Managed *m, String *name, const Value &value);
     static PropertyAttributes query(const Managed *, String *name);
     static bool isEqualTo(Managed *that, Managed *o);
 
diff --git a/src/qml/qml/qqmlvaluetypewrapper.cpp b/src/qml/qml/qqmlvaluetypewrapper.cpp
index 44b612e7d2..d262b230e2 100644
--- a/src/qml/qml/qqmlvaluetypewrapper.cpp
+++ b/src/qml/qml/qqmlvaluetypewrapper.cpp
@@ -290,9 +290,11 @@ int QQmlValueTypeWrapper::typeId() const
 bool QQmlValueTypeWrapper::write(QObject *target, int propertyIndex) const
 {
     bool destructGadgetOnExit = false;
+    Q_ALLOCA_DECLARE(void, gadget);
     if (const QQmlValueTypeReference *ref = as<const QQmlValueTypeReference>()) {
         if (!d()->gadgetPtr) {
-            d()->gadgetPtr = alloca(d()->valueType->metaType.sizeOf());
+            Q_ALLOCA_ASSIGN(void, gadget, d()->valueType->metaType.sizeOf());
+            d()->gadgetPtr = gadget;
             d()->valueType->metaType.construct(d()->gadgetPtr, 0);
             destructGadgetOnExit = true;
         }
@@ -407,13 +409,13 @@ ReturnedValue QQmlValueTypeWrapper::get(const Managed *m, String *name, bool *ha
 #undef VALUE_TYPE_ACCESSOR
 }
 
-void QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
+bool QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
 {
     Q_ASSERT(m->as<QQmlValueTypeWrapper>());
     ExecutionEngine *v4 = static_cast<QQmlValueTypeWrapper *>(m)->engine();
     Scope scope(v4);
     if (scope.hasException())
-        return;
+        return false;
 
     Scoped<QQmlValueTypeWrapper> r(scope, static_cast<QQmlValueTypeWrapper *>(m));
     Scoped<QQmlValueTypeReference> reference(scope, m->d());
@@ -424,7 +426,7 @@ void QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
         QMetaProperty writebackProperty = reference->d()->object->metaObject()->property(reference->d()->property);
 
         if (!writebackProperty.isWritable() || !reference->readReferenceValue())
-            return;
+            return false;
 
         writeBackPropertyType = writebackProperty.userType();
     }
@@ -432,7 +434,7 @@ void QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
     const QMetaObject *metaObject = r->d()->propertyCache()->metaObject();
     const QQmlPropertyData *pd = r->d()->propertyCache()->property(name, 0, 0);
     if (!pd)
-        return;
+        return false;
 
     if (reference) {
         QV4::ScopedFunctionObject f(scope, value);
@@ -442,7 +444,7 @@ void QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
                 QString error = QStringLiteral("Cannot assign JavaScript function to value-type property");
                 ScopedString e(scope, v4->newString(error));
                 v4->throwError(e);
-                return;
+                return false;
             }
 
             QQmlContextData *context = v4->callingQmlContext();
@@ -459,7 +461,7 @@ void QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
             newBinding->setSourceLocation(bindingFunction->currentLocation());
             newBinding->setTarget(reference->d()->object, cacheData, pd);
             QQmlPropertyPrivate::setBinding(newBinding);
-            return;
+            return true;
         } else {
             QQmlPropertyPrivate::removeBinding(reference->d()->object, QQmlPropertyIndex(reference->d()->property, pd->coreIndex()));
         }
@@ -493,6 +495,8 @@ void QQmlValueTypeWrapper::put(Managed *m, String *name, const Value &value)
             QMetaObject::metacall(reference->d()->object, QMetaObject::WriteProperty, reference->d()->property, a);
         }
     }
+
+    return true;
 }
 
 QT_END_NAMESPACE
diff --git a/src/qml/qml/qqmlvaluetypewrapper_p.h b/src/qml/qml/qqmlvaluetypewrapper_p.h
index 87f9116056..c8aac719ab 100644
--- a/src/qml/qml/qqmlvaluetypewrapper_p.h
+++ b/src/qml/qml/qqmlvaluetypewrapper_p.h
@@ -106,7 +106,7 @@ public:
     bool write(QObject *target, int propertyIndex) const;
 
     static ReturnedValue get(const Managed *m, String *name, bool *hasProperty);
-    static void put(Managed *m, String *name, const Value &value);
+    static bool put(Managed *m, String *name, const Value &value);
     static bool isEqualTo(Managed *m, Managed *other);
     static PropertyAttributes query(const Managed *, String *name);
     static void advanceIterator(Managed *m, ObjectIterator *it, Value *name, uint *index, Property *p, PropertyAttributes *attributes);
diff --git a/src/qml/qml/qqmlvmemetaobject.cpp b/src/qml/qml/qqmlvmemetaobject.cpp
index 545daa96f8..490a4e19ab 100644
--- a/src/qml/qml/qqmlvmemetaobject.cpp
+++ b/src/qml/qml/qqmlvmemetaobject.cpp
@@ -325,9 +325,12 @@ QQmlVMEMetaObject::QQmlVMEMetaObject(QObject *obj,
         if (compiledObject->nProperties || compiledObject->nFunctions) {
             Q_ASSERT(cache && cache->engine);
             QV4::ExecutionEngine *v4 = cache->engine;
-            QV4::Heap::MemberData *data = QV4::MemberData::allocate(v4, compiledObject->nProperties + compiledObject->nFunctions);
-            propertyAndMethodStorage.set(v4, data);
-            std::fill(data->data, data->data + data->size, QV4::Encode::undefined());
+            uint size = compiledObject->nProperties + compiledObject->nFunctions;
+            if (size) {
+                QV4::Heap::MemberData *data = QV4::MemberData::allocate(v4, size);
+                propertyAndMethodStorage.set(v4, data);
+                std::fill(data->data, data->data + data->size, QV4::Encode::undefined());
+            }
 
             // Need JS wrapper to ensure properties/methods are marked.
             ensureQObjectWrapper();