IpTaggedObject.hpp

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// Copyright (C) 2004, 2006 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13
 
#ifndef __IPTAGGEDOBJECT_HPP__
#define __IPTAGGEDOBJECT_HPP__
 
#include "IpUtils.hpp"
#include "IpDebug.hpp"
#include "IpReferenced.hpp"
#include "IpObserver.hpp"
 
namespace Ipopt
{
 
class IPOPTLIB_EXPORT TaggedObject : public ReferencedObject, public Subject
{
public:
   typedef unsigned int Tag;
 
   TaggedObject()
      :
      Subject()
   {
      ObjectChanged();
   }
 
   virtual ~TaggedObject()
   {}
 
   Tag GetTag() const
   {
      return tag_;
   }
 
   bool HasChanged(const Tag comparison_tag) const
   {
      return (comparison_tag == tag_) ? false : true;
   }
protected:
   void ObjectChanged();
private:
 
   TaggedObject(const TaggedObject&);
 
   void operator=(const TaggedObject&);
 
   Tag tag_;
 
   Index cache_priority_;
};
} // namespace Ipopt
#endif