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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** 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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef SINGLETON_H
#define SINGLETON_H
QT_BEGIN_NAMESPACE
/*!
\class Singleton
\internal
Class template for singleton objects in QDoc.
*/
template<typename T>
class Singleton
{
public:
Singleton(const Singleton &) = delete;
Singleton &operator=(const Singleton &) = delete;
static T &instance()
{
static T s_instance {};
return s_instance;
}
protected:
Singleton() = default;
};
QT_END_NAMESPACE
#endif // SINGLETON_H
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