qt-creator/src/plugins/coreplugin/id.h

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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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#ifndef CORE_ID_H
#define CORE_ID_H

#include "core_global.h"

#include <QMetaType>
#include <QString>

namespace Core {

// FIXME: Make this a wrapper around an int, not around a QByteArray.
class CORE_EXPORT Id
{
public:
    Id() : m_id(0) {}
    Id(const char *name);
    explicit Id(const QByteArray &name);
    // FIXME: Remove
    explicit Id(const QString &name);
    QByteArray name() const;
    QString toString() const;
    bool isValid() const { return m_id; }
    bool operator==(Id id) const { return m_id == id.m_id; }
    bool operator==(const char *name) const;
    bool operator!=(Id id) const { return m_id != id.m_id; }
    bool operator!=(const char *name) const { return !operator==(name); }
    bool operator<(Id id) const { return m_id < id.m_id; }
    bool operator>(Id id) const { return m_id > id.m_id; }
    int uniqueIdentifier() const { return m_id; }
    static Id fromUniqueIdentifier(int uid) { return Id(uid, uid); }

private:
    Id(int uid, int) : m_id(uid) {}
    // Intentionally unimplemented
    Id(const QLatin1String &);
    int m_id;
};

inline uint qHash(const Id &id) { return id.uniqueIdentifier(); }

} // namespace Core

Q_DECLARE_METATYPE(Core::Id)
Q_DECLARE_METATYPE(QList<Core::Id>)

#endif // CORE_ID_H