ErrCode.h

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//****************************************************************************
//*                   This file is part of PandaRoot.                        *
//*                                                                          *
//*            PandaRoot is distributed under the terms of the               *
//*              GNU General Public License (GPL) version 3,                 *
//*                 copied verbatim in the file "LICENSE".                   *
//*                                                                          *
//*  Copyright (C) 2006 - 2024 FAIR GmbH and copyright holders of PandaRoot  *
//*     The copyright holders are listed in the file "COPYRIGHTHOLDERS".     *
//*               The authors are listed in the file "AUTHORS".              *
//****************************************************************************

// ******************************************************
// DecayTreeFitter Package
// We thank the original author Wouter Hulsbergen
// (BaBar, LHCb) for providing the sources.
// http://arxiv.org/abs/physics/0503191v1 (2005)
// Adaptation & Development for PANDA: Ralf Kliemt (2015)
// ******************************************************
#ifndef DECAYTREEFITTER_ERRORCODE_H
#define DECAYTREEFITTER_ERRORCODE_H 1

#include <iostream>
#include "Rtypes.h"

namespace DecayTreeFitter {

class ErrCode {
 public:
  enum Status { success = 0, pocafailure = 1, baddistance = 2, inversionerror = 4, badsetup = 8, divergingconstraint = 16, slowdivergingfit = 32, fastdivergingfit = 64 };

  ErrCode() : _flag(success) {}

  ErrCode(Status aflag) : _flag(aflag) {}

  virtual ~ErrCode(){};

  const ErrCode &operator|=(const ErrCode &rhs)
  {
    _flag |= rhs._flag;
    return *this;
  }

  bool operator==(const ErrCode &rhs) const { return _flag == rhs._flag; }

  bool operator==(const ErrCode::Status &rhs) const { return *this == ErrCode(rhs); }

  void reset() { _flag = success; }
  bool failure() const { return _flag != success; }
  unsigned int flag() const { return _flag; }
  void Print(std::ostream &os);

 private:
  unsigned int _flag;
  ClassDef(ErrCode, 1)
};

// std::ostream& operator<<(std::ostream& os, ErrCode& code) ;

} // namespace DecayTreeFitter

#endif