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 "vtkCommonCoreModule.h" // For export macro
#include "vtkStringFormatter.h"  // For vtk::to_string/format

#include <ostream>
#include <string>

VTK_ABI_NAMESPACE_BEGIN
class VTKCOMMONCORE_EXPORT vtkNumberToString
{
public:

  void SetLowExponent(int lowExponent);
  int GetLowExponent();


  void SetHighExponent(int highExponent);
  int GetHighExponent();

  enum Notation
  {
    Mixed,
    Scientific,
    Fixed
  };


  void SetNotation(int notation);
  int GetNotation();


  void SetPrecision(int precision);
  int GetPrecision();


  std::string Convert(double val);
  std::string Convert(float val);
  template <typename T>
  std::string Convert(const T& val)
  {
    return vtk::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>
  T operator()(const T& val) const
  {
    return val;
  }

private:
  int LowExponent = -6;
  int HighExponent = 20;
  int Notation = Mixed;
  int Precision = 2;
};

VTKCOMMONCORE_EXPORT ostream& operator<<(ostream& stream, const vtkNumberToString::TagDouble& tag);
VTKCOMMONCORE_EXPORT ostream& operator<<(ostream& stream, const vtkNumberToString::TagFloat& tag);

VTK_ABI_NAMESPACE_END
#endif
// VTK-HeaderTest-Exclude: vtkNumberToString.h