SiStripHashedDetId.h

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#ifndef CalibFormats_SiStripObjects_SiStripHashedDetId_H
#define CalibFormats_SiStripObjects_SiStripHashedDetId_H

#include "DataFormats/DetId/interface/DetId.h"
#include "DataFormats/SiStripCommon/interface/SiStripConstants.h"
#include <boost/cstdint.hpp>
#include <iomanip>
#include <vector>
#include <algorithm>

class SiStripHashedDetId;
std::ostream& operator<< ( std::ostream& os, const SiStripHashedDetId& );

class SiStripHashedDetId {
  
 public:

  // ---------- constructors ----------
  
  SiStripHashedDetId( const std::vector<uint32_t>& );
  
  SiStripHashedDetId( const std::vector<DetId>& );

  SiStripHashedDetId( const SiStripHashedDetId& );
  
  SiStripHashedDetId();

  ~SiStripHashedDetId();

  // ---------- typedefs ----------

  typedef std::vector<uint32_t>::const_iterator const_iterator;

  typedef std::vector<uint32_t>::iterator iterator;

  // ---------- public interface ----------

  inline uint32_t hashedIndex( uint32_t det_id ); 
  
  inline uint32_t unhashIndex( uint32_t hashed_index ) const;

  //inline DetId detId( uint32_t index ) const;

  inline const_iterator begin() const;

  inline const_iterator end() const;

 private:

  void init( const std::vector<uint32_t>& );
  
  std::vector<uint32_t> detIds_;

  uint32_t id_;

  const_iterator iter_;

};

uint32_t SiStripHashedDetId::hashedIndex( uint32_t det_id ) { 
  const_iterator iter = end();
  if ( det_id > id_ ) { iter = find( iter_, end(), det_id ); }
  else { iter = find( begin(), iter_, det_id ); }
  if ( iter != end() ) { 
    id_ = det_id;
    iter_ = iter;
    return iter-begin(); 
  } else { 
    id_ = 0;
    iter_ = begin();
    return sistrip::invalid32_; 
  }
}
uint32_t SiStripHashedDetId::unhashIndex( uint32_t hashed_index ) const { 
  if ( hashed_index < static_cast<uint32_t>(end()-begin()) ) { return detIds_[hashed_index]; }
  else { return sistrip::invalid32_; }
}
SiStripHashedDetId::const_iterator SiStripHashedDetId::begin() const { return detIds_.begin(); }
SiStripHashedDetId::const_iterator SiStripHashedDetId::end() const { return detIds_.end(); }

#endif // CalibFormats_SiStripObjects_SiStripHashedDetId_H