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diff --git a/src/qml/qml/qqmlmetatypedata_p.h b/src/qml/qml/qqmlmetatypedata_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQml module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQMLMETATYPEDATA_P_H
+#define QQMLMETATYPEDATA_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qqmltype_p.h>
+#include <private/qqmlmetatype_p.h>
+#include <private/qhashedstring_p.h>
+
+#include <QtCore/qset.h>
+#include <QtCore/qvector.h>
+#include <QtCore/qbitarray.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQmlTypePrivate;
+struct QQmlMetaTypeData
+{
+    QQmlMetaTypeData();
+    ~QQmlMetaTypeData();
+    void registerType(QQmlTypePrivate *priv);
+    QList<QQmlType> types;
+    QSet<QQmlType> undeletableTypes;
+    typedef QHash<int, QQmlTypePrivate *> Ids;
+    Ids idToType;
+    typedef QHash<QHashedStringRef, QQmlTypePrivate *> Names;
+    Names nameToType;
+    typedef QHash<QUrl, QQmlTypePrivate *> Files; //For file imported composite types only
+    Files urlToType;
+    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 QQmlPrivate::RegisterCompositeType
+    typedef QHash<const QMetaObject *, QQmlTypePrivate *> MetaObjects;
+    MetaObjects metaObjectToType;
+    typedef QHash<int, QQmlMetaType::StringConverter> StringConverters;
+    StringConverters stringConverters;
+    QVector<QHash<int, QQmlRefPointer<QQmlPropertyCache>>> typePropertyCaches;
+
+    struct VersionedUri {
+        VersionedUri()
+            : majorVersion(0) {}
+        VersionedUri(const QHashedString &uri, int majorVersion)
+            : uri(uri), majorVersion(majorVersion) {}
+        bool operator==(const VersionedUri &other) const {
+            return other.majorVersion == majorVersion && other.uri == uri;
+        }
+        QHashedString uri;
+        int majorVersion;
+    };
+    typedef QHash<VersionedUri, QQmlTypeModule *> TypeModules;
+    TypeModules uriToModule;
+
+    QBitArray objects;
+    QBitArray interfaces;
+    QBitArray lists;
+
+    QList<QQmlPrivate::AutoParentFunction> parentFunctions;
+    QVector<QQmlPrivate::QmlUnitCacheLookupFunction> lookupCachedQmlUnit;
+
+    QSet<QString> protectedNamespaces;
+
+    QString typeRegistrationNamespace;
+
+    QHash<int, int> qmlLists;
+
+    QHash<const QMetaObject *, QQmlPropertyCache *> propertyCaches;
+
+    QQmlPropertyCache *propertyCacheForMinorVersion(int index, int minorVersion) const;
+    void setPropertyCacheForMinorVersion(int index, int minorVersion, QQmlPropertyCache *cache);
+    void clearPropertyCachesForMinorVersion(int index);
+
+    QQmlPropertyCache *propertyCache(const QMetaObject *metaObject, int minorVersion);
+    QQmlPropertyCache *propertyCache(const QQmlType &type, int minorVersion);
+
+    void setTypeRegistrationFailures(QStringList *failures)
+    {
+        m_typeRegistrationFailures = failures;
+    }
+
+    void recordTypeRegFailure(const QString &message)
+    {
+        if (m_typeRegistrationFailures)
+            m_typeRegistrationFailures->append(message);
+        else
+            qWarning("%s", message.toUtf8().constData());
+    }
+
+private:
+    QStringList *m_typeRegistrationFailures = nullptr;
+};
+
+inline uint qHash(const QQmlMetaTypeData::VersionedUri &v)
+{
+    return v.uri.hash() ^ qHash(v.majorVersion);
+}
+
+QT_END_NAMESPACE
+
+#endif // QQMLMETATYPEDATA_P_H