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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QQMLNULLABLEVALUE_P_H
#define QQMLNULLABLEVALUE_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 <QtCore/private/qglobal_p.h>
QT_BEGIN_NAMESPACE
template<typename T>
struct QQmlNullableValue
{
QQmlNullableValue()
: value(T()) {}
QQmlNullableValue(const QQmlNullableValue<T> &o)
: isNull(o.isNull), value(o.value) {}
QQmlNullableValue(const T &t)
: isNull(false), value(t) {}
QQmlNullableValue<T> &operator=(const T &t)
{ isNull = false; value = t; return *this; }
QQmlNullableValue<T> &operator=(const QQmlNullableValue<T> &o)
{ isNull = o.isNull; value = o.value; return *this; }
operator T() const { return value; }
void invalidate() { isNull = true; }
bool isValid() const { return !isNull; }
bool isNull = true;
T value;
};
QT_END_NAMESPACE
#endif // QQMLNULLABLEVALUE_P_H
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