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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
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#ifndef ARY_MANIP_HXX
#define ARY_MANIP_HXX

template <class XY >
class Manipulator
{
  public:
    virtual             ~Manipulator() {}

    void                operator()(
                            XY &                io_r ) const
                            { op_fcall(io_r); }
  private:
    virtual void        op_fcall(
                            XY &                io_r ) const = 0;
};

template <class XY >
class Const_Manipulator
{
  public:
    virtual             ~Const_Manipulator() {}

    void                operator()(
                            const XY &          io_r ) const
                            { op_fcall(io_r); }
  private:
    virtual void        op_fcall(
                            const XY &          io_r ) const = 0;
};


#endif