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/****************************************************************************
*
* This is a part of the TOTEM offline software.
* Authors:
* Jan Kašpar (jan.kaspar@gmail.com)
*
****************************************************************************/
#ifndef EventFilter_CTPPSRawToDigi_VFATFrameCollection
#define EventFilter_CTPPSRawToDigi_VFATFrameCollection
#include "CondFormats/PPSObjects/interface/TotemFramePosition.h"
#include "EventFilter/CTPPSRawToDigi/interface/VFATFrame.h"
#include <string>
/**
* Interface class for VFAT-frame collections.
**/
class VFATFrameCollection {
public:
VFATFrameCollection() {}
virtual ~VFATFrameCollection() {}
/// returns pointer to frame with ID, performs NO duplicity check (if there is precisely one frame with this 12bit ID)
virtual const VFATFrame* GetFrameByID(unsigned int ID) const = 0;
/// returns frame at given position in Slink frame
virtual const VFATFrame* GetFrameByIndex(TotemFramePosition index) const = 0;
/// returns frame at given position in Slink frame and checks 12bit ID
virtual const VFATFrame* GetFrameByIndexID(TotemFramePosition index, unsigned int ID);
/// return the number of VFAT frames in the collection
virtual unsigned int Size() const = 0;
/// returns whether the collection is empty
virtual bool Empty() const = 0;
/// pair: frame DAQ position, frame data
typedef std::pair<TotemFramePosition, const VFATFrame*> value_type;
/// the VFATFrameCollection interator
class Iterator {
protected:
/// interator value
value_type value;
/// the pointer to the collection
const VFATFrameCollection* collection;
public:
/// constructor, automatically sets the iterator to the beginning
Iterator(const VFATFrameCollection* c = nullptr) : collection(c) {
if (collection)
value = collection->BeginIterator();
}
/// returns the DAQ position of the current element
TotemFramePosition Position() { return value.first; }
/// returns the frame data of the current element
const VFATFrame* Data() { return value.second; }
/// shifts the iterator
void Next() { value = collection->NextIterator(value); }
/// returns whether the iterator points over the end of the collection
bool IsEnd() { return collection->IsEndIterator(value); }
};
protected:
/// returns the beginning of the collection
virtual value_type BeginIterator() const = 0;
/// shifts the iterator
virtual value_type NextIterator(const value_type&) const = 0;
/// checks whether the iterator points over the end of the collection
virtual bool IsEndIterator(const value_type&) const = 0;
};
#endif
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