dox/Common/vtkNew.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkNew.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkNew_h
#define __vtkNew_h

#include "vtkIOStream.h"

class vtkObjectBase;

template <class T>
class vtkNew
{

  void CheckObjectBase(vtkObjectBase*) {}
public:


  vtkNew() : Object(T::New())
    {
    this->CheckObjectBase(this->Object);
    }


  ~vtkNew()
    {
    T* obj = this->Object;
    if (obj)
      {
      this->Object = 0;
      obj->Delete();
      }
    }


  T* operator->() const
    {
    return this->Object;
    }


  T* GetPointer() const
    {
    return this->Object;
    }

private:
  vtkNew(vtkNew<T> const&); // Not implemented.
  void operator=(vtkNew<T> const&);   // Not implemented.
  T* Object;
};


template <class T>
inline ostream& operator << (ostream& os, const vtkNew<T>& p)
{
  return os << p.GetPointer();
}

#endif