itkLightObject.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkLightObject_h
#define itkLightObject_h
 
#include "itkMacro.h"
#include "itkSmartPointer.h"
#include "itkTimeStamp.h"
#include "itkIndent.h"
#include <atomic>
 
#include <iostream>
#include <typeinfo>
 
#if defined(_WIN32)
// To get LONG defined
#  include "itkWindows.h"
#elif defined(__APPLE__)
// To get MAC_OS_X_VERSION_MIN_REQUIRED defined
#  include <AvailabilityMacros.h>
#endif
 
namespace itk
{
class ITKCommon_EXPORT LightObject
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(LightObject);
 
  using Self = LightObject;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  static Pointer
  New();
 
  virtual Pointer
  CreateAnother() const;
 
  Pointer
  Clone() const
  {
    return this->InternalClone();
  }
 
  virtual void
  Delete();
 
  virtual const char *
  GetNameOfClass() const;
 
#ifdef _WIN32
 
  void * operator new(size_t);
 
  void * operator new[](size_t);
 
  void
  operator delete(void *);
 
  void
  operator delete[](void *, size_t);
 
#endif
 
  void
  Print(std::ostream & os, Indent indent = 0) const;
 
  static void
  BreakOnError();
 
  virtual void
  Register() const;
 
  virtual void
  UnRegister() const noexcept;
 
  virtual int
  GetReferenceCount() const
  {
    return m_ReferenceCount;
  }
 
  virtual void
  SetReferenceCount(int);
 
protected:
  LightObject();
  virtual ~LightObject();
 
  virtual void
  PrintSelf(std::ostream & os, Indent indent) const;
 
  virtual void
  PrintHeader(std::ostream & os, Indent indent) const;
 
  virtual void
  PrintTrailer(std::ostream & os, Indent indent) const;
 
  virtual LightObject::Pointer
  InternalClone() const;
 
  mutable std::atomic<int> m_ReferenceCount;
};
 
ITKCommon_EXPORT std::ostream &
                 operator<<(std::ostream & os, const LightObject & o);
 
} // end namespace itk
 
#endif