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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 itkSTLConstContainerAdaptor_h
#define itkSTLConstContainerAdaptor_h
#include "itkMacro.h"
namespace itk
{
/** \class STLConstContainerAdaptor
* \brief An adapter object that casts a [const itk::XxxContainer] into [const std::xxx]
* and enables access to the underlying data structure.
*
* An adapter object that casts a [const itk::XxxContainer] into [const std::xxx]
* and enables access to the underlying data structure.
*
* The class is provided for interface consistency with STLContainerAdaptor
* plus the [const] modifier. Since everything is const, there is no need to call
* AdapteeType::Modified() in the destructor.
*
* Here's a usage example of STLContainerAdaptor
*
\code
itk::STLConstContainerAdaptor<itk::VectorContainer<SizeValueType, ElementType>> vecAdaptor(aContainer);
const std::vector<ElementType> & vec = vecAdaptor.GetSTLContainerRef();
// do things with vec ...
\endcode
*
* \ingroup ITKCommon
*/
template <typename TContainer>
class STLConstContainerAdaptor
{
public:
ITK_DISALLOW_COPY_AND_MOVE(STLConstContainerAdaptor);
using AdapteeType = const TContainer;
using ElementType = const typename AdapteeType::Element;
using TargetType = const typename AdapteeType::STLContainerType;
private:
AdapteeType & m_AdapteeRef;
public:
STLConstContainerAdaptor(AdapteeType & adaptee)
: m_AdapteeRef(adaptee)
{}
STLConstContainerAdaptor(AdapteeType * adaptee)
: m_AdapteeRef(*adaptee)
{}
TargetType &
GetSTLConstContainerRef()
{
return m_AdapteeRef.CastToSTLConstContainer();
}
};
} // end namespace itk
#endif
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