SmartPtr.h

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// Copyright András Vukics 2006–2014. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE.txt)
// -*- C++ -*-
#ifndef   CPPQEDCORE_UTILS_SMARTPTR_H_INCLUDED
#define   CPPQEDCORE_UTILS_SMARTPTR_H_INCLUDED

#include <boost/shared_ptr.hpp>


namespace cpputils {


namespace details {

template<typename T>
inline void nullDelete (T*) {}

} // details



template<typename T>
const boost::shared_ptr<T>
nonOwningSharedPtr(T* t 
                  )
{
  return boost::shared_ptr<T>(t,details::nullDelete<T>);
}


template<typename T>
const boost::shared_ptr<const T>
nonOwningConstSharedPtr(T* t 
                       )
{
  return boost::shared_ptr<const T>(t,details::nullDelete<T>);
}


template<typename T>
const boost::shared_ptr<T> sharedPointerize(boost::shared_ptr<T> t) {return                     t ;}

template<typename T>
const boost::shared_ptr<T> sharedPointerize(                  T& t) {return nonOwningSharedPtr(&t);}

template<typename T>
const boost::shared_ptr<T> sharedPointerize(                  T* t) {return nonOwningSharedPtr( t);}


} // cpputils


#endif // CPPQEDCORE_UTILS_SMARTPTR_H_INCLUDED