1 // @(#)root/cont:$Id$
2 // Author: Fons Rademakers 21/10/97
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_TArray
13 #define ROOT_TArray
14
15
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TArray //
19 // //
20 // Abstract array base class. Used by TArrayC, TArrayS, TArrayI, //
21 // TArrayL, TArrayF and TArrayD. //
22 // Data member is public for historical reasons. //
23 // //
24 //////////////////////////////////////////////////////////////////////////
25
26 #ifndef ROOT_Rtypes
27 #include "Rtypes.h"
28 #endif
29 #include <string.h>
30
31 class TBuffer;
32
33 class TArray {
34
35 protected:
36 Bool_t BoundsOk(const char *where, Int_t at) const;
37 Bool_t OutOfBoundsError(const char *where, Int_t i) const;
38
39 public:
40 Int_t fN; //Number of array elements
41
42 TArray(): fN(0) { }
43 TArray(Int_t n): fN(n) { }
44 TArray(const TArray &a): fN(a.fN) { }
45 TArray &operator=(const TArray &rhs)
46 {if(this!=&rhs) fN = rhs.fN; return *this; }
47 virtual ~TArray() { fN = 0; }
48
49 Int_t GetSize() const { return fN; }
50 virtual void Set(Int_t n) = 0;
51
52 virtual Double_t GetAt(Int_t i) const = 0;
53 virtual void SetAt(Double_t v, Int_t i) = 0;
54
55 static TArray *ReadArray(TBuffer &b, const TClass *clReq);
56 static void WriteArray(TBuffer &b, const TArray *a);
57
58 friend TBuffer &operator<<(TBuffer &b, const TArray *obj);
59
60 ClassDef(TArray,1) //Abstract array base class
61 };
62
63 #if defined R__TEMPLATE_OVERLOAD_BUG
64 template <>
65 #endif
66 inline TBuffer &operator>>(TBuffer &buf, TArray *&obj)
67 {
68 // Read TArray object from buffer.
69
70 obj = (TArray *) TArray::ReadArray(buf, TArray::Class());
71 return buf;
72 }
73
74 #if defined R__TEMPLATE_OVERLOAD_BUG
75 template <>
76 #endif
77 TBuffer &operator<<(TBuffer &b, const TArray *obj);
78
79 inline Bool_t TArray::BoundsOk(const char *where, Int_t at) const
80 {
81 return (at < 0 || at >= fN)
82 ? OutOfBoundsError(where, at)
83 : kTRUE;
84 }
85
86 #endif
87