AtomicId.h

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#ifndef PhysicsTools_MVAComputer_AtomicId_h
#define PhysicsTools_MVAComputer_AtomicId_h
// -*- C++ -*-
//
// Package:     MVAComputer
// Class  :     AtomicID
//
 
//
// Author:  Christophe Saout <christophe.saout@cern.ch>
// Created:     Sat Apr 24 15:18 CEST 2007
//
 
#include <ostream>
#include <string>
 
namespace PhysicsTools {
 
  class AtomicId {
  public:
    inline AtomicId() throw() : string(nullptr) {}
    inline AtomicId(const AtomicId &orig) throw() : string(orig.string) {}
    inline AtomicId(const char *arg) throw() : string(lookup(arg)) {}
    inline AtomicId(const std::string &arg) throw() : string(lookup(arg.c_str())) {}
    inline ~AtomicId() throw() {}
 
    inline AtomicId &operator=(const AtomicId &orig) throw() {
      string = orig.string;
      return *this;
    }
 
    inline operator const char *() const throw() { return string; }
 
    inline operator bool() const throw() { return string != nullptr; }
 
    inline operator std::string() const throw() { return std::string(string); }
 
    inline bool operator==(const AtomicId &second) const throw() { return string == second.string; }
    inline bool operator!=(const AtomicId &second) const throw() { return string != second.string; }
    inline bool operator<(const AtomicId &second) const throw() { return string < second.string; }
    inline bool operator<=(const AtomicId &second) const throw() { return string <= second.string; }
    inline bool operator>(const AtomicId &second) const throw() { return string > second.string; }
    inline bool operator>=(const AtomicId &second) const throw() { return string >= second.string; }
 
  private:
    static AtomicId build(const char *arg) throw() {
      AtomicId q;
      q.string = arg;
      return q;
    }
    static const char *lookup(const char *arg) throw();
 
    const char *string;
  };
 
  inline std::ostream &operator<<(std::ostream &os, const PhysicsTools::AtomicId &id) { return os << (const char *)id; }
 
}  // namespace PhysicsTools
 
#endif  // PhysicsTools_MVAComputer_AtomicId_h