/usr/include/root/RooLinkedListIter.h is in libroot-roofit-dev 5.34.30-0ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Project: RooFit *
* Package: RooFitCore *
* File: $Id: RooLinkedListIter.h,v 1.11 2007/05/11 09:11:30 verkerke Exp $
* Authors: *
* WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
* DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
* *
* Copyright (c) 2000-2005, Regents of the University of California *
* and Stanford University. All rights reserved. *
* *
* Redistribution and use in source and binary forms, *
* with or without modification, are permitted according to the terms *
* listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
*****************************************************************************/
#ifndef ROO_LINKED_LIST_ITER
#define ROO_LINKED_LIST_ITER
#include "Rtypes.h"
#include "TIterator.h"
#include "RooLinkedList.h"
#if ROOT_VERSION_CODE <= 332546
#ifndef nullptr
#define nullptr 0
#endif
#endif
class RooFIter
{
public:
inline RooFIter() : _ptr (0) {}
inline RooFIter(const RooLinkedList* list) : _ptr (list->_first) {}
inline RooAbsArg *next() {
// Return next element in collection
if (!_ptr) return 0 ;
TObject* arg = _ptr->_arg ;
_ptr = _ptr->_next;
return (RooAbsArg*) arg ;
}
private:
const RooLinkedListElem* _ptr ; //! Next link element
};
class RooLinkedListIter : public TIterator {
public:
RooLinkedListIter() {
// coverity[UNINIT_CTOR]
} ;
RooLinkedListIter(const RooLinkedList* list, Bool_t forward) :
TIterator(), _list(list), _ptr(forward ? _list->_first : _list->_last),
_forward(forward)
{ }
RooLinkedListIter(const RooLinkedListIter& other) :
TIterator(other), _list(other._list), _ptr(other._ptr),
_forward(other._forward)
{
// Copy constructor
}
virtual ~RooLinkedListIter() { ; }
TIterator& operator=(const TIterator& other) {
// Iterator assignment operator
if (&other==this) return *this ;
const RooLinkedListIter* iter = dynamic_cast<const RooLinkedListIter*>(&other) ;
if (iter) {
_list = iter->_list ;
_ptr = iter->_ptr ;
_forward = iter->_forward ;
}
return *this ;
}
virtual const TCollection *GetCollection() const {
// Dummy
return 0 ;
}
virtual TObject *Next() {
// Return next element in collection
if (!_ptr) return 0 ;
TObject* arg = _ptr->_arg ;
_ptr = _forward ? _ptr->_next : _ptr->_prev ;
return arg ;
}
TObject *NextNV() {
// Return next element in collection
if (!_ptr) return 0 ;
TObject* arg = _ptr->_arg ;
_ptr = _forward ? _ptr->_next : _ptr->_prev ;
return arg ;
}
virtual void Reset() {
// Return iterator to first element in collection
_ptr = _forward ? _list->_first : _list->_last ;
}
bool operator!=(const TIterator &aIter) const {
const RooLinkedListIter *iter(dynamic_cast<const RooLinkedListIter*>(&aIter));
if (iter) return (_ptr != iter->_ptr);
return false; // for base class we don't implement a comparison
}
bool operator!=(const RooLinkedListIter &aIter) const {
return (_ptr != aIter._ptr);
}
virtual TObject *operator*() const {
// Return element iterator points to
return (_ptr ? _ptr->_arg : nullptr);
}
protected:
const RooLinkedList* _list ; //! Collection iterated over
const RooLinkedListElem* _ptr ; //! Next link element
Bool_t _forward ; // Iterator direction
ClassDef(RooLinkedListIter,2) // Iterator for RooLinkedList container class
} ;
#endif
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