qt-creator/src/libs/3rdparty/modeling/qmt/infrastructure/uid.h

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** Copyright (C) 2015 Jochen Becher
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#ifndef QMT_UID_H
#define QMT_UID_H

#include "qmt_global.h"

#include <QDataStream>
#include <QUuid>
#include <QMetaType>


namespace qmt {

class QMT_EXPORT Uid
{
public:

    static const Uid getInvalidUid() { return Uid(QUuid()); }

public:
    Uid() : _uuid(QUuid::createUuid()) { }

    explicit Uid(const QUuid &uuid) : _uuid(uuid) { }

    bool isValid() const { return !_uuid.isNull(); }

    QUuid get() const { return _uuid; }

    void setUuid(const QUuid &uuid) { _uuid = uuid; }

    void clear() { _uuid = QUuid(); }

    void renew() { _uuid = QUuid::createUuid(); }

    QString toString() const { return _uuid.toString(); }

    void fromString(const QString &s) { _uuid = QUuid(s); }

private:
    QUuid _uuid;
};

inline uint qHash(const Uid &uid)
{
    return qHash(uid.get());
}

inline bool operator==(const Uid &lhs, const Uid &rhs)
{
    return lhs.get() == rhs.get();
}

inline bool operator!=(const Uid &lhs, const Uid &rhs)
{
    return !operator==(lhs, rhs);
}

inline QDataStream &operator<<(QDataStream &stream, const Uid &uid)
{
    return stream << uid.get();
}

inline QDataStream &operator>>(QDataStream &stream, Uid &uid)
{
    QUuid uuid;
    stream >> uuid;
    uid.setUuid(uuid);
    return stream;
}

}

Q_DECLARE_METATYPE(qmt::Uid)

#endif // QMT_UID_H