PID.h

// -*- C++ -*-
//
// PID.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2019 Leif Lonnblad
//
// ThePEG is licenced under version 3 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef ThePEG_PID_H
#define ThePEG_PID_H
 
#include "EnumParticles.h"
 
namespace ThePEG {
 
class PID {
public:
  template <typename T>
  PID(T t) { 
    t.ERROR_only_use_long_as_Particle_ID_type(); 
  }
 
  template <typename T>
  operator T() const {
    T t; 
    t.ERROR_only_use_long_as_Particle_ID_type(); 
    return t;
  }
 
  PID operator-() const;
 
private:
  long id;
};
 
template <> inline PID::PID(long t) : id(t) {} 
 
template <> inline PID::PID(int t) : id(t) {} 
 
template <> inline PID::PID(ParticleID::ParticleCodes t) : id(t) {} 
 
template <> inline PID::operator long() const { return id; }
 
inline PID PID::operator-() const {
  return -id;
}
 
}
 
#endif /* ThePEG_PID_H */