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

/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
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** GNU Lesser General Public License Usage
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** License version 2.1 as published by the Free Software Foundation and
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#ifndef CORE_ID_H
#define CORE_ID_H

#include "core_global.h"

#include <QtCore/QMetaType>
#include <QtCore/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);
    // FIXME: Replace with QByteArray
    explicit Id(const QString &name);
    QByteArray name() const;
    QString toString() const;
    bool isValid() const { return m_id; }
    bool operator==(const Id &id) const { return m_id == id.m_id; }
    bool operator!=(const 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)

#endif // CORE_ID_H