LArRodIdHash.h

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/*
  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/
 
/********************************************************************
 
 NAME:     LArRodIdHash.h
 PACKAGE:  Trigger/TrigAlgorithms/TrigT2CaloCommon
 
 AUTHOR:   Denis Oliveira Damazio
 
 PURPOSE:  LArReadoutModuleID to integer (hash ID) mapping.
 *******************************************************************/
 
#ifndef TRIGT2CALOCOMMON_LARRODIDHASH_H
#define TRIGT2CALOCOMMON_LARRODIDHASH_H
 
 
#include <vector> 
#include <map>
 
class HWIdentifier;

class LArRodIdHash  {
 
 public:

  typedef unsigned int ID; 

  void initialize(int offset, const std::vector<HWIdentifier>& roms ); 

  int operator() (const ID& id) const ;

  int max() const; 

  ID identifier(int i) const;   

  int offset() const ;
 
 private:
  int m_size{0};  // total number of IDs

  std::map<unsigned int, int> m_lookup ;
 
  std::vector<ID> m_int2id;
 
  int m_offset{0};
 
};
 
#endif