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/*=========================================================================
Program: Visualization Toolkit
Module: vtkInformationInternals.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.
=========================================================================*/
/**
* @class vtkInformationInternals
* @brief internal structure for vtkInformation
*
* vtkInformationInternals is used in internal implementation of
* vtkInformation. This should only be accessed by friends
* and sub-classes of that class.
*/
#ifndef vtkInformationInternals_h
#define vtkInformationInternals_h
#include "vtkInformationKey.h"
#include "vtkObjectBase.h"
#include <cstdint>
#define VTK_INFORMATION_USE_HASH_MAP
#ifdef VTK_INFORMATION_USE_HASH_MAP
#include <unordered_map>
#else
#include <map>
#endif
//----------------------------------------------------------------------------
VTK_ABI_NAMESPACE_BEGIN
class vtkInformationInternals
{
public:
typedef vtkInformationKey* KeyType;
typedef vtkObjectBase* DataType;
#ifdef VTK_INFORMATION_USE_HASH_MAP
struct HashFun
{
size_t operator()(KeyType key) const
{
return reinterpret_cast<uintptr_t>(key) / sizeof(vtkInformationKey);
}
};
typedef std::unordered_map<KeyType, DataType, HashFun> MapType;
#else
typedef std::map<KeyType, DataType> MapType;
#endif
MapType Map;
#ifdef VTK_INFORMATION_USE_HASH_MAP
vtkInformationInternals()
: Map(33)
{
}
#endif
~vtkInformationInternals()
{
for (MapType::iterator i = this->Map.begin(); i != this->Map.end(); ++i)
{
if (vtkObjectBase* value = i->second)
{
value->UnRegister(nullptr);
}
}
}
#ifdef VTK_INFORMATION_USE_HASH_MAP
private:
vtkInformationInternals(vtkInformationInternals const&) = delete;
#endif
};
#undef VTK_INFORMATION_USE_HASH_MAP
VTK_ABI_NAMESPACE_END
#endif
// VTK-HeaderTest-Exclude: vtkInformationInternals.h
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