itkCreateObjectFunction.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
 *
 *         https://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 itkCreateObjectFunction_h
#define itkCreateObjectFunction_h
 
#include "itkObject.h"
 
namespace itk
{
class ITKCommon_EXPORT CreateObjectFunctionBase : public Object
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(CreateObjectFunctionBase);

  using Self = CreateObjectFunctionBase;
  using Superclass = Object;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  virtual SmartPointer<LightObject>
  CreateObject() = 0;
 
protected:
  CreateObjectFunctionBase();
  ~CreateObjectFunctionBase() override;
};

template <typename T>
class CreateObjectFunction : public CreateObjectFunctionBase
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(CreateObjectFunction);

  using Self = CreateObjectFunction;
  using Pointer = SmartPointer<Self>;

  itkFactorylessNewMacro(Self);
  LightObject::Pointer
  CreateObject() override
  {
    return T::New().GetPointer();
  }

protected:
  CreateObjectFunction() = default;
  ~CreateObjectFunction() override = default;
};
} // end namespace itk
 
#endif