AutoSet.hpp

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// ANNA - Anna is Not Nothingness Anymore                                                         //
//                                                                                                //
// (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo                         //
//                                                                                                //
// See project site at http://redmine.teslayout.com/projects/anna-suite                           //
// See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //


#ifndef anna_dbos_AutoSet_hpp
#define anna_dbos_AutoSet_hpp

#include <anna/dbos/Set.hpp>

namespace anna {

namespace dbos {


template <typename T> class AutoSet {
public:
  explicit AutoSet(Set <T>* t) : a_t(t) {;}

  AutoSet() : a_t(NULL) {;}

  ~AutoSet() { if(a_t != NULL) T::release(a_t); }

  Set <T>* operator -> () const { return a_t; }

  Set <T>* operator = (Set<T>* t)
  {
    if(a_t == t)
      return t;

    if(a_t != NULL)
      T::release(a_t);

    return a_t = t;
  }

  operator Set <T>*() const { return a_t; }

private:
  Set <T>* a_t;
};


}
}



#endif