qrangeiterator_p.h

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//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.

#ifndef Patternist_RangeIterator_H
#define Patternist_RangeIterator_H

#include "qitem_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{
    class Q_AUTOTEST_EXPORT RangeIterator : public Item::Iterator
    {
    public:

        enum Direction
        {
            Backward = 0,

            Forward = 1
        };

        RangeIterator(const xsInteger start,
                      const Direction direction,
                      const xsInteger end);

        virtual Item next();
        virtual Item current() const;
        virtual xsInteger position() const;
        virtual xsInteger count();
        virtual Item::Iterator::Ptr toReversed();
        virtual Item::Iterator::Ptr copy() const;

    private:
        xsInteger m_start;
        xsInteger m_end;
        Item m_current;
        xsInteger m_position;
        xsInteger m_count;
        const Direction m_direction;

        const qint8 m_increment : 2;
    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif