valentina/src/libs/vmisc/vdatastreamenum.h

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/************************************************************************
**
** @file vdatastreamenum.h
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date 21 12, 2018
**
** @brief
** @copyright
** This source code is part of the Valentina project, a pattern making
** program, whose allow create and modeling patterns of clothing.
** Copyright (C) 2015 Valentina project
** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
**
** Valentina is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** Valentina is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#ifndef DATASTREAM_ENUM_H
#define DATASTREAM_ENUM_H
#include <QDataStream>
#include <type_traits>
// (de)serialize enums into QDataStream
//a function that can serialize any enum into QDataStream
//it stores the enum in a qint64
template<typename Enum,
typename = typename std::enable_if<std::is_enum<Enum>::value>::type>
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inline QDataStream& operator<<(QDataStream& stream, const Enum& e)
{
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return stream << static_cast<qint64>(e);
}
//a function that can deserialize any enum from QDataStream
//it reads the enum as if it was stored in qint64
template<typename Enum,
typename = typename std::enable_if<std::is_enum<Enum>::value>::type>
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inline QDataStream& operator>>(QDataStream& stream, Enum& e)
{
qint64 v;
stream >> v;
e = static_cast<Enum>(v);
return stream;
}
#if QT_VERSION < QT_VERSION_CHECK(5, 9, 0)
template <typename Enum>
inline QDataStream &operator<<(QDataStream &s, QFlags<Enum> e)
{
return s << static_cast<int>(e);
}
template <typename Enum>
inline QDataStream &operator>>(QDataStream &s, QFlags<Enum> &e)
{
int v;
s >> v;
e = static_cast<QFlags<Enum>>(v);
return s;
}
#endif
#endif // DATASTREAM_ENUM_H