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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 QQMLPROPERTYCACHEVECTOR_P_H
+#define QQMLPROPERTYCACHEVECTOR_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/qflagpointer_p.h>
+#include <private/qqmlpropertycache_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQmlPropertyCacheVector
+{
+public:
+    QQmlPropertyCacheVector() {}
+    QQmlPropertyCacheVector(QQmlPropertyCacheVector &&other)
+        : data(std::move(other.data)) {}
+    QQmlPropertyCacheVector &operator=(QQmlPropertyCacheVector &&other) {
+        QVector<QFlagPointer<QQmlPropertyCache>> moved(std::move(other.data));
+        data.swap(moved);
+        return *this;
+    }
+
+    ~QQmlPropertyCacheVector() { clear(); }
+    void resize(int size) { return data.resize(size); }
+    int count() const { return data.count(); }
+    void clear()
+    {
+        for (int i = 0; i < data.count(); ++i) {
+            if (QQmlPropertyCache *cache = data.at(i).data())
+                cache->release();
+        }
+        data.clear();
+    }
+
+    void append(QQmlPropertyCache *cache) { cache->addref(); data.append(cache); }
+    QQmlPropertyCache *at(int index) const { return data.at(index).data(); }
+    void set(int index, const QQmlRefPointer<QQmlPropertyCache> &replacement) {
+        if (QQmlPropertyCache *oldCache = data.at(index).data()) {
+            if (replacement.data() == oldCache)
+                return;
+            oldCache->release();
+        }
+        data[index] = replacement.data();
+        replacement->addref();
+    }
+
+    void setNeedsVMEMetaObject(int index) { data[index].setFlag(); }
+    bool needsVMEMetaObject(int index) const { return data.at(index).flag(); }
+private:
+    Q_DISABLE_COPY(QQmlPropertyCacheVector)
+    QVector<QFlagPointer<QQmlPropertyCache>> data;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQMLPROPERTYCACHEVECTOR_P_H