fletcher32.h

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//
// srecord - Manipulate EPROM load files
// Copyright (C) 2009-2011 Peter Miller
//
// This program 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 program 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
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
 
#ifndef SRECORD_MEMORY_WALKER_FLETCHER32_H
#define SRECORD_MEMORY_WALKER_FLETCHER32_H
 
#include <srecord/fletcher32.h>
#include <srecord/memory/walker.h>
 
namespace srecord
{
 
/**
  * The srecord::memory_walker_fletcher32 class is used to represent the parse
  * state of a memory walker which calculates a running Fletcher-32 checksum.
  */
class memory_walker_fletcher32:
    public memory_walker
{
public:
    typedef std::shared_ptr<memory_walker_fletcher32> pointer;
 
    /**
      * The destructor.
      */
    virtual ~memory_walker_fletcher32();
 
private:
    /**
      * The default constructor.  It is private on putpose, use the
      * #create method instead.
      */
    memory_walker_fletcher32();
 
public:
    /**
      * The create class method is used to create new dynamically
      * allocated instances of this class.
      */
    static pointer create();
 
    /**
      * The get method is used to get the Fletcher-32 checksum once all memory
      * chunks have been processed by calls to our observe method.
      */
    unsigned get() const;
 
protected:
    // See base class for documentation.
    void observe(unsigned long, const void *, int);
 
private:
    /**
      * The checksum instance variable is used to remember the running
      * state of the Fletcher-32 checksum calculation.
      */
    fletcher32 checksum;
 
    /**
      * The copy constructor.  Do not use.
      */
    memory_walker_fletcher32(const memory_walker_fletcher32 &);
 
    /**
      * The assignment operator.  Do not use.
      */
    memory_walker_fletcher32 &operator=(const memory_walker_fletcher32 &);
};
 
};
 
// vim: set ts=8 sw=4 et :
#endif // SRECORD_MEMORY_WALKER_FLETCHER32_H