Reconstruction/MdcPatRec/MdcRecoUtil/include/MdcRecoUtil/ConstAIterator.h

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// -*- C++ -*-
// CLASSDOC OFF
// $Id: ConstAIterator.h,v 1.2 2010/03/25 09:55:57 zhangy Exp $
// CLASSDOC ON
//
// This file is a part of what might beome the CLHEP -
// a Class Library for High Energy Physics.
//
// This is the definition of the HepConstAListIterator class. It is used
// in the same way as the HepAListIterator class but can also be used with
// HepConstAList and it only returns const pointers to objects.
//
// .SS
// AList.h, ConstAList.h, AIterator.h, AListBase.h, AIteratorBase.h
//
// .SS History
// HepConstAListIterator was developed from an original (non-template) list
// iterator class written by Dag Bruck.
//
// Author: Leif Lonnblad
//
 
#ifndef _CONSTAITERATOR_H_
#define _CONSTAITERATOR_H_
 
#include "MdcRecoUtil/AIteratorBase.h"
#include "MdcRecoUtil/ConstAList.h"
 
#ifdef HEP_NO_INLINE_IN_TEMPLATE_DECLARATION
#  define inline
#endif
 
template <class T> class HepConstAListIterator : public HepAListIteratorBase {
 
public:
  inline HepConstAListIterator( const HepAList<T>& );
  inline HepConstAListIterator( const HepConstAList<T>& );
  // Constructor taking a corresponding list as argument. Starting at the
  // first element.
 
  inline HepConstAListIterator( const HepConstAListIterator<T>& );
  // Copy constructor.
 
  inline ~HepConstAListIterator();
 
  inline const T* operator()();
  inline const T* next();
  // Returns a pointer to the current object in the associated list, moving
  // forward to the next. Returns 0 if all objects are done.
 
  inline const T* prev();
  // Moves backward one step in the list and returns the object found there.
  // If current object is the first in the list, no stepping is done and 0 is
  // returned.
 
  inline const T* current() const;
  // Returns a pointer to the current object in the associated list,
  // without incrementing the index.
};
 
#ifdef HEP_NO_INLINE_IN_TEMPLATE_DECLARATION
#  undef inline
#endif
 
#ifdef HEP_SHORT_NAMES
#  define CAIterator HepConstAListIterator
#endif
 
#include "MdcRecoUtil/ConstAIterator.icc"
 
#endif // _ALISTITERATOR_H_