smesh/src/MEDWrapper/Base/MED_SharedPtr.hxx

96 lines
2.7 KiB
C++

// Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library 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 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
#ifndef MED_SharedPtr_HeaderFile
#define MED_SharedPtr_HeaderFile
#include <boost/shared_ptr.hpp>
namespace MED
{
//! To extend the boost::shared_ptr to support such features automatic dynamic cast
/*!
All entities of the MEDWrapper package are handled as pointer.
This class was introduced to provide correct and flexible memory management
for all of the MEDWrapper objects.
*/
template<class T> class SharedPtr: public boost::shared_ptr<T>
{
public:
//! Default constructor
SharedPtr() {}
//! Construct the class by any type of a pointer
template<class Y>
explicit SharedPtr(Y * p):
boost::shared_ptr<T>(p)
{}
//! Construct the class by any specialisation of the class
template<class Y>
SharedPtr(SharedPtr<Y> const & r):
boost::shared_ptr<T>(boost::dynamic_pointer_cast<T,Y>(r))
{}
//! Copy-constructor
template<class Y>
SharedPtr&
operator=(SharedPtr<Y> const & r)
{
SharedPtr<T>(r).swap(*this);
return *this;
}
//! Introduce a flexible way to reset the wrapped pointer
template<class Y>
SharedPtr&
operator()(Y * p) // Y must be complete
{
return operator=<Y>(SharedPtr<Y>(p));
}
//! Introduce a flexible way to reset the wrapped pointer
template<class Y>
SharedPtr&
operator()(SharedPtr<Y> const & r) // Y must be complete
{
return operator=<Y>(SharedPtr<Y>(r));
}
//! To provide a flexible way to use reference to the wrapped pointer (const version)
operator const T& () const
{
return *(this->get());
}
//! To provide a flexible way to use reference to the wrapped pointer
operator T& ()
{
return *(this->get());
}
};
}
#endif