/***************************************************************************
**
** Copyright (C) 2015 Jochen Becher
** Contact: http://www.qt.io/licensing
**
** This file is part of Qt Creator.
**
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** accordance with the commercial license agreement provided with the
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
** following information to ensure the GNU Lesser General Public License
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**
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****************************************************************************/

#ifndef QARK_SAVINGREFMAP_H
#define QARK_SAVINGREFMAP_H

#include "objectid.h"

#include <QMap>
#include <QPair>
#include <typeinfo>


namespace qark {

namespace impl {

class SavingRefMap {

public:

    SavingRefMap()
        : _references(),
          _next_ref(1)
    {
    }

    template<typename T>
    bool hasRef(const T *object)
    {
        return hasRef(reinterpret_cast<const void *>(object), typeid(*object).name());
    }

    template<typename T>
    bool hasDefinedRef(const T *object)
    {
        return hasDefinedRef(reinterpret_cast<const void *>(object), typeid(*object).name());
    }

    template<typename T>
    ObjectId getRef(const T *object, bool define = false)
    {
        return getRef(reinterpret_cast<const void *>(object), typeid(*object).name(), define);
    }

    int countDanglingReferences();

private:

    bool hasRef(const void *address, const char *type_name);

    bool hasDefinedRef(const void *address, const char *type_name);

    ObjectId getRef(const void *address, const char *type_name, bool define);

private:

    typedef QPair<const void *, const char *> key_type;
    typedef QPair<ObjectId, bool> value_type;
    typedef QMap<key_type, value_type> map_type;

private:

    map_type _references;
    ObjectId _next_ref;
};

}

}

#endif // QARK_SAVINGREFMAP_H
