freeform_message.h

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// -*-c++-*-
 
/*
 *Copyright:
 
 Copyright (C) Hidehisa AKIYAMA
 
 This code is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 3 of the License, or (at your option) any later version.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 *EndCopyright:
 */
 
 
#ifndef RCSC_COMMON_FREEFORM_MESSAGE_H
#define RCSC_COMMON_FREEFORM_MESSAGE_H
 
#include <memory>
#include <string>
#include <iostream>
 
namespace rcsc {
 
/*-------------------------------------------------------------------*/
class FreeformMessage {
public:
 
    typedef std::shared_ptr< const FreeformMessage > Ptr;
 
private:
 
    const std::string M_type;
 
    // not used
    FreeformMessage() = delete;
    FreeformMessage( const FreeformMessage & ) = delete;
    FreeformMessage & operator=( const FreeformMessage & ) = delete;
 
protected:
 
    FreeformMessage( const std::string & t )
        : M_type( t )
      { }
 
public:
 
    virtual
    ~FreeformMessage() = default;
 
    const std::string & type() const
      {
          return M_type;
      }
 
    virtual
    int length() const = 0;
 
    virtual
    bool append( std::string & to ) const = 0;
 
    virtual
    std::ostream & printDebug( std::ostream & os ) const = 0;
 
};
 
}
 
#endif