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TSeqCollection.h
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1 // @(#)root/cont:$Id$
2 // Author: Fons Rademakers 04/08/95
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #ifndef ROOT_TSeqCollection
13 #define ROOT_TSeqCollection
14 
15 
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TSeqCollection //
19 // //
20 // Sequenceable collection abstract base class. TSeqCollection's have //
21 // an ordering relation, i.e. there is a first and last element. //
22 // //
23 //////////////////////////////////////////////////////////////////////////
24 
25 #include "TCollection.h"
26 
27 
28 class TSeqCollection : public TCollection {
29 
30 protected:
31  Bool_t fSorted; // true if collection has been sorted
32 
33  TSeqCollection() : fSorted(kFALSE) { }
34  virtual void Changed() { fSorted = kFALSE; }
35 
36 public:
37  virtual ~TSeqCollection() { }
38  virtual void Add(TObject *obj) { AddLast(obj); }
39  virtual void AddFirst(TObject *obj) = 0;
40  virtual void AddLast(TObject *obj) = 0;
41  virtual void AddAt(TObject *obj, Int_t idx) = 0;
42  virtual void AddAfter(const TObject *after, TObject *obj) = 0;
43  virtual void AddBefore(const TObject *before, TObject *obj) = 0;
44  virtual void RemoveFirst() { Remove(First()); }
45  virtual void RemoveLast() { Remove(Last()); }
46  virtual TObject *RemoveAt(Int_t idx) { return Remove(At(idx)); }
47  virtual void RemoveAfter(TObject *after) { Remove(After(after)); }
48  virtual void RemoveBefore(TObject *before) { Remove(Before(before)); }
49 
50  virtual TObject *At(Int_t idx) const = 0;
51  virtual TObject *Before(const TObject *obj) const = 0;
52  virtual TObject *After(const TObject *obj) const = 0;
53  virtual TObject *First() const = 0;
54  virtual TObject *Last() const = 0;
55  Int_t LastIndex() const { return GetSize() - 1; }
56  virtual Int_t GetLast() const;
57  virtual Int_t IndexOf(const TObject *obj) const;
58  virtual Bool_t IsSorted() const { return fSorted; }
59  void UnSort() { fSorted = kFALSE; }
60  Long64_t Merge(TCollection *list);
61 
62  static Int_t ObjCompare(TObject *a, TObject *b);
63  static void QSort(TObject **a, Int_t first, Int_t last);
64  static inline void QSort(TObject **a, TObject **b, Int_t first, Int_t last) { QSort(a, 1, &b, first, last); }
65  static void QSort(TObject **a, Int_t nBs, TObject ***b, Int_t first, Int_t last);
66 
67  ClassDef(TSeqCollection,0) //Sequenceable collection ABC
68 };
69 
70 #endif