vtkNumberToString.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkNumberToString_h
#define vtkNumberToString_h
 
#include "vtkDeprecation.h"  // For VTK_DEPRECATED_IN_9_3_0
#include "vtkIOCoreModule.h" // For export macro
#include "vtkTypeTraits.h"
 
#include <ostream>
#include <string>
 
VTK_ABI_NAMESPACE_BEGIN
class VTKIOCORE_EXPORT vtkNumberToString
{
public:
 
  void SetLowExponent(int lowExponent);
  int GetLowExponent();
 
 
  void SetHighExponent(int highExponent);
  int GetHighExponent();
 
 
  std::string Convert(double val);
  std::string Convert(float val);
  template <typename T>
  std::string Convert(const T& val)
  {
    return std::to_string(val);
  }
 
  struct TagDouble
  {
    double Value;
    TagDouble(const double& value)
      : Value(value)
    {
    }
  };
 
  struct TagFloat
  {
    float Value;
    TagFloat(const float& value)
      : Value(value)
    {
    }
  };
 
  template <typename T>
  const T& operator()(const T& val) const
  {
    return val;
  }
  VTK_DEPRECATED_IN_9_3_0("Use vtkNumberToString::Convert instead.")
  TagDouble operator()(const double& val) const { return TagDouble(val); }
  VTK_DEPRECATED_IN_9_3_0("Use vtkNumberToString::Convert instead.")
  TagFloat operator()(const float& val) const { return TagFloat(val); }
 
private:
  int LowExponent = -6;
  int HighExponent = 20;
};
 
VTKIOCORE_EXPORT ostream& operator<<(ostream& stream, const vtkNumberToString::TagDouble& tag);
VTKIOCORE_EXPORT ostream& operator<<(ostream& stream, const vtkNumberToString::TagFloat& tag);
 
VTK_ABI_NAMESPACE_END
#endif
// VTK-HeaderTest-Exclude: vtkNumberToString.h