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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.
*
*=========================================================================*/
/*=========================================================================
*
* Portions of this file are subject to the VTK Toolkit Version 3 copyright.
*
* Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
*
* For complete copyright, license and disclaimer of warranty information
* please refer to the NOTICE file at the top of the ITK source tree.
*
*=========================================================================*/
#ifndef itkMetaDataObjectBase_h
#define itkMetaDataObjectBase_h
#include "itkLightObject.h"
#include <typeinfo>
#include <iostream>
namespace itk
{
/** \class MetaDataObjectBase
* \brief The common interface for MetaDataObject's.
*
* This class is intended as the value part
* of the (key,value) pair to be stored in
* a MetaDataDictionary
*
* \author Hans J. Johnson
* \ingroup ITKCommon
*/
class ITKCommon_EXPORT MetaDataObjectBase : public LightObject
{
public:
ITK_DISALLOW_COPY_AND_MOVE(MetaDataObjectBase);
/** Smart pointer type alias support */
using Self = MetaDataObjectBase;
using Superclass = LightObject;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(MetaDataObjectBase);
/**
* \author Hans J. Johnson
* \return A pointer to a const char array containing the unique type name.
*/
virtual const char *
GetMetaDataObjectTypeName() const;
/**
* \author Hans J. Johnson
* \return A constant reference to a std::type_info object
*/
virtual const std::type_info &
GetMetaDataObjectTypeInfo() const;
/** Returns (metaDataBase1 == metaDataBase2). */
friend bool
operator==(const Self & lhs, const Self & rhs)
{
return lhs.Equal(rhs);
}
/** Returns (metaDataBase1 != metaDataBase2). */
friend bool
operator!=(const Self & lhs, const Self & rhs)
{
return !(lhs == rhs);
}
/**
* Defines the default behavior for printing out this element
* \param os An output stream
*/
virtual void
Print(std::ostream & os) const;
protected:
MetaDataObjectBase();
~MetaDataObjectBase() override;
private:
virtual bool
Equal(const MetaDataObjectBase &) const = 0;
};
} // namespace itk
#endif // itkMetaDataObjectBase_h
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