FormulaString.h

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#ifndef INCLUDE_EICSMEAR_SMEAR_FORMULASTRING_H_
#define INCLUDE_EICSMEAR_SMEAR_FORMULASTRING_H_

#include <string>
#include <vector>

#include <TObject.h>

#include "eicsmear/smear/Smear.h"  // For KinType enum

class TFormula;

namespace Smear {

class FormulaString : public TObject {
 public:
  virtual ~FormulaString();

  FormulaString();

  explicit FormulaString(const std::string&);

  virtual double Eval(const std::vector<double>&) const;

  virtual std::vector<Smear::KinType> Variables() const;

  virtual std::string GetString() const;

  virtual std::string GetInputString() const;

  static std::string GetKinName(KinType);

  static KinType GetKinType(const std::string&);

 protected:
  std::string Parse(const std::string&);

  TFormula* mFormula;
  std::string mInput;  
  std::vector<Smear::KinType> mVariables;

  ClassDef(Smear::FormulaString, 1)
};

}  // namespace Smear

#endif  // INCLUDE_EICSMEAR_SMEAR_FORMULASTRING_H_