frameid.hpp

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/*
  FRAMEID.hpp  -  distinct identification of a single data frame
 
   Copyright (C)
     2008,            Hermann Vosseler <Ichthyostega@web.de>
 
 **Lumiera** is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
 Free Software Foundation; either version 2 of the License, or (at your
 option) any later version. See the file COPYING for further details.
 
*/
 
 
#ifndef LUMIERA_FRAMEID_H
#define LUMIERA_FRAMEID_H
 
 
#include "lib/integral.hpp"
#include <compare>
 
namespace lumiera {
  
  
  struct NodeID
    {
      ulong id;
      ulong generation;
      ulong childSum;
      
      NodeID()
        : id (++currID),
          generation(0),
          childSum(0)
        { }
      
      static ulong currID;
    };
  
  
  
  
  class FrameID
    {
      long dummy;
    public:
      FrameID(long dum=0) : dummy(dum) {}
      operator long () { return dummy; }
      
      auto operator<=> (FrameID const&) const  =default;
    };
  
  
  
  
} // namespace lumiera
#endif