/data/refman/pasoursint/CMSSW_6_1_1/src/DataFormats/MuonDetId/interface/DTChamberId.h

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#ifndef MuonDetId_DTChamberId_H
#define MuonDetId_DTChamberId_H

#include <DataFormats/DetId/interface/DetId.h>

#include <iosfwd>

class DTChamberId : public DetId {
public:
  DTChamberId();
  

  DTChamberId(uint32_t id);
  DTChamberId(DetId id);


  DTChamberId(int wheel, 
              int station, 
              int sector);


  DTChamberId(const DTChamberId& chId);


  int wheel() const {
    return int((id_>>wheelStartBit_) & wheelMask_)+ minWheelId -1;
  }


  int station() const {
    return ((id_>>stationStartBit_) & stationMask_);
  }


  int sector() const {
    return ((id_>>sectorStartBit_)& sectorMask_);
  }


  static const int minStationId=    1;
  static const int maxStationId=    4;
  static const int minSectorId=     0;
  static const int maxSectorId=    14;
  static const int minWheelId=     -2;
  static const int maxWheelId=      2;
  static const int minSuperLayerId= 0;
  static const int maxSuperLayerId= 3;
  static const int minLayerId=      0;
  static const int maxLayerId=      4;
  static const int minWireId=       0;
  static const int maxWireId=      97;
 

 protected:
  static const int wireNumBits_=   7;  
  static const int wireStartBit_=  3;
  static const int layerNumBits_=   3;
  static const int layerStartBit_=  wireStartBit_ + wireNumBits_;
  static const int slayerNumBits_=  2;
  static const int slayerStartBit_= layerStartBit_+ layerNumBits_;
  static const int wheelNumBits_  = 3;
  static const int wheelStartBit_=  slayerStartBit_ + slayerNumBits_;
  static const int sectorNumBits_=  4;
  static const int sectorStartBit_= wheelStartBit_ + wheelNumBits_;
  static const int stationNumBits_= 3;
  static const int stationStartBit_ = sectorStartBit_ + sectorNumBits_;


  static const uint32_t wheelMask_=    0x7;
  static const uint32_t stationMask_=  0x7;
  static const uint32_t sectorMask_=   0xf;
  static const uint32_t slMask_=       0x3;
  static const uint32_t lMask_=        0x7;
  static const uint32_t wireMask_=    0x7f;

  static const uint32_t layerIdMask_= ~(wireMask_<<wireStartBit_);
  static const uint32_t slIdMask_ = ~((wireMask_<<wireStartBit_) |
                                      (lMask_<<layerStartBit_));
  static const uint32_t chamberIdMask_ = ~((wireMask_<<wireStartBit_) |
                                           (lMask_<<layerStartBit_) |
                                           (slMask_<<slayerStartBit_));

  // Perform a consistency check of the id with a DT Id
  // It thorows an exception if this is not the case
  void checkMuonId();
  
};


std::ostream& operator<<( std::ostream& os, const DTChamberId& id );

#endif