vtkInformationKeyLookup.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkInformationKeyLookup_h
#define vtkInformationKeyLookup_h
 
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkObject.h"
 
#include <map>     // For std::map
#include <string>  // For std::string
#include <utility> // For std::pair
 
VTK_ABI_NAMESPACE_BEGIN
class vtkInformationKey;
 
class VTKCOMMONCORE_EXPORT vtkInformationKeyLookup : public vtkObject
{
public:
  static vtkInformationKeyLookup* New();
  vtkTypeMacro(vtkInformationKeyLookup, vtkObject);
 
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static vtkInformationKey* Find(const std::string& name, const std::string& location);
 
protected:
  vtkInformationKeyLookup();
  ~vtkInformationKeyLookup() override;
 
  friend class vtkInformationKey;
 
  static void RegisterKey(
    vtkInformationKey* key, const std::string& name, const std::string& location);
 
private:
  vtkInformationKeyLookup(const vtkInformationKeyLookup&) = delete;
  void operator=(const vtkInformationKeyLookup&) = delete;
 
  typedef std::pair<std::string, std::string> Identifier; // Location, Name
  typedef std::map<Identifier, vtkInformationKey*> KeyMap;
 
  // Using a static function / variable here to ensure static initialization
  // works as intended, since key objects are static, too.
  static KeyMap& Keys();
};
 
VTK_ABI_NAMESPACE_END
#endif // vtkInformationKeyLookup_h