/**
  * /brief class TileWriter allows to write result tiles by
  * TileBitmapReader and TileDataReader instances.
  * which count & control the number of available in tile values
  * Class allows to catch user errors.
  */
class TileWriter : boost::noncopyable
{
  private:
    Value  _trueValue;
    Value  _falseValue;

    TileErrorInterface* _error;
    position_t _processed;
    position_t _left;

    Value  _value;
    RLEPayload::append_iterator* _appender;
    TypeId _type;

  private:
    void fill(position_t count, bool data) const;
    void init();

  public:
    TileWriter(TileErrorInterface* error, TypeId const& a_type= TID_BOOL);
    virtual ~TileWriter();

    bool work() const;
    position_t left() const;
    position_t processed() const;
    Value& value();

    void reset(position_t count);
    void complete();
    void copy(TileBitmapReader& reader, position_t count);
    void copy(TileDataReader& reader, position_t count);

    MessageBuilder& print(MessageBuilder&) const;
};