#ifndef CUTID_HPP
#define CUTID_HPP
//========================================================================
//
// Name: CutID.hpp
//
// Purpose: A cut identifier class.  An association between cut names and
//          cut identifiers is maintained by the cut registry in class
//          CutRecorder.
//
// Created: 3-Jul-2000   H. Greenlee
//
//========================================================================

#include <iostream>

namespace trf {

class CutID;

// Output stream.
std::ostream& operator<<(std::ostream&, const CutID&);

class CutID {

public:

  // Constructor, destructor
  CutID(int id=-1) : _id(id) {}    // Default-constructed object is invalid.
  ~CutID() {}

  // Operators.
  bool operator==(const CutID& c) const {return _id == c._id;}
  bool operator<(const CutID& c) const {return _id < c._id;}
  friend std::ostream& operator<<(std::ostream&, const CutID&);

  // Methods.
  int id() const {return _id;}
  bool is_valid() const {return _id>=0;}

private:

  // Attributes.
  int _id;    // Cut identifier (>=0 -> valid, <0 -> invalid).

};

}  // end namespace trf

#endif