IteratorRangeContainer.h

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/*
 * Copyright (C) 2012 by
 *   MetraLabs GmbH (MLAB), GERMANY
 * and
 *   Neuroinformatics and Cognitive Robotics Labs (NICR) at TU Ilmenau, GERMANY
 * All rights reserved.
 *
 * Contact: info@mira-project.org
 *
 * Commercial Usage:
 *   Licensees holding valid commercial licenses may use this file in
 *   accordance with the commercial license agreement provided with the
 *   software or, alternatively, in accordance with the terms contained in
 *   a written agreement between you and MLAB or NICR.
 *
 * GNU General Public License Usage:
 *   Alternatively, this file may be used under the terms of the GNU
 *   General Public License version 3.0 as published by the Free Software
 *   Foundation and appearing in the file LICENSE.GPL3 included in the
 *   packaging of this file. Please review the following information to
 *   ensure the GNU General Public License version 3.0 requirements will be
 *   met: http://www.gnu.org/copyleft/gpl.html.
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 *   General Public License if such license has been publicly approved by
 *   MLAB and NICR (or its successors, if any).
 *
 * IN NO EVENT SHALL "MLAB" OR "NICR" BE LIABLE TO ANY PARTY FOR DIRECT,
 * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
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#ifndef _MIRA_ITERATORRANGECONTAINER_H_
#define _MIRA_ITERATORRANGECONTAINER_H_

#include <list> // to include stl iterator_base

namespace mira {


template <typename Iterator>
class IteratorRangeContainer
{
public:

    IteratorRangeContainer() :
        mEnd(mBegin) {}

    IteratorRangeContainer(const Iterator& begin, const Iterator& end) :
        mBegin(begin), mEnd(end) {}

public:

    typedef Iterator iterator;
    typedef typename Iterator::reference reference;

public:

    iterator begin() const {
        return mBegin;
    }

    iterator end() const  {
        return mEnd;
    }

    reference front() const { return *begin(); }

    reference back() const {
        iterator b = end();
        --b;
        return *b;
    }

    std::size_t size() const {
        return std::distance(begin(), end());
    }

private:

    Iterator mBegin;
    Iterator mEnd;
};


} // namespace

#endif /* _MIRA_ITERATORRANGECONTAINER_H_ */