/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_13_patch3/src/TrackingTools/DetLayers/interface/DetGroup.h

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#ifndef DetLayers_DetGroup_h
#define DetLayers_DetGroup_h 

#include "Geometry/CommonDetUnit/interface/GeomDet.h"
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
#include <vector>
#include <utility>
#include <algorithm>

class DetGroupElement {
 public:
  typedef std::pair<const GeomDet*,TrajectoryStateOnSurface> DetWithState;
  typedef GeomDet                                            Det;

 
  DetGroupElement( const DetWithState& dws) :
    det_(dws.first), state_(dws.second) {}

  DetGroupElement( const Det* d, const TrajectoryStateOnSurface& s) :
    det_(d), state_(s) {}

#if defined( __GXX_EXPERIMENTAL_CXX0X__)
  DetGroupElement(DetGroupElement const & rhs) : det_(rhs.det_), state_(rhs.state_){}
  DetGroupElement(DetGroupElement && rhs)  noexcept : det_(rhs.det_), state_(std::move(rhs.state_)){}
  DetGroupElement & operator=(DetGroupElement const & rhs) {
     det_=rhs.det_;
     state_ = rhs.state_;
     return *this;
  }
  DetGroupElement & operator=(DetGroupElement && rhs)  noexcept {
     det_=rhs.det_;
     state_ = std::move(rhs.state_);
     return *this;
  }
#endif

  const Det* det() const {return det_;}
  const TrajectoryStateOnSurface& trajectoryState() const {return state_;}

private:

  const Det* det_;
  TrajectoryStateOnSurface state_;

};


class DetGroup : public std::vector< DetGroupElement> {
public:

  typedef std::vector< DetGroupElement>         Base;
  typedef DetGroupElement::DetWithState         DetWithState;

  DetGroup() {}
#if defined( __GXX_EXPERIMENTAL_CXX0X__)
  DetGroup(DetGroup const & rhs) : Base(rhs), index_(rhs.index_), indexSize_(rhs.indexSize_)  {}
  DetGroup(DetGroup && rhs)  noexcept : Base(std::forward<Base>(rhs)), index_(rhs.index_), indexSize_(rhs.indexSize_)  {}
  DetGroup & operator=(DetGroup const & rhs) {
    Base::operator=(rhs);
    index_ =  rhs.index_;
    indexSize_ = rhs.indexSize_;
    return *this;
  }
  DetGroup & operator=(DetGroup && rhs) noexcept { 
    Base::operator=(std::forward<Base>(rhs)); 
    index_ =  rhs.index_;
    indexSize_ = rhs.indexSize_;
    return *this;
  }
#endif


  DetGroup(int ind, int indSize) : index_(ind), indexSize_(indSize) {}

  DetGroup(const std::vector<DetWithState>& vec) {
    reserve( vec.size());
    for (std::vector<DetWithState>::const_iterator i=vec.begin(); i!=vec.end(); i++) {
      push_back(DetGroupElement(*i));
    }
  }

  int index() const {return index_;}

  int indexSize() const {return indexSize_;}

  void setIndexSize( int newSize) {indexSize_ = newSize;}

  void incrementIndex( int incr) {
    // for (iterator i=begin(); i!=end(); i++) i->incrementIndex(incr);
    index_ += incr;
    indexSize_ += incr;
  }

private:

  int index_;
  int indexSize_;

};

#endif