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TArrayL.cxx
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1 // @(#)root/cont:$Id$
2 // Author: Rene Brun 06/03/95
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 /** \class TArrayL
13 \ingroup Containers
14 Array of longs (32 or 64 bits per element).
15 */
16 
17 #include "TArrayL.h"
18 #include "TBuffer.h"
19 
20 
22 
23 ////////////////////////////////////////////////////////////////////////////////
24 /// Default TArrayL ctor.
25 
27 {
28  fArray = nullptr;
29 }
30 
31 ////////////////////////////////////////////////////////////////////////////////
32 /// Create TArrayL object and set array size to n longs.
33 
35 {
36  fArray = nullptr;
37  if (n > 0) Set(n);
38 }
39 
40 ////////////////////////////////////////////////////////////////////////////////
41 /// Create TArrayL object and initialize it with values of array.
42 
44 {
45  fArray = nullptr;
46  Set(n, array);
47 }
48 
49 ////////////////////////////////////////////////////////////////////////////////
50 /// Copy constructor.
51 
52 TArrayL::TArrayL(const TArrayL &array) : TArray(array)
53 {
54  fArray = nullptr;
55  Set(array.fN, array.fArray);
56 }
57 
58 ////////////////////////////////////////////////////////////////////////////////
59 /// TArrayL assignment operator.
60 
62 {
63  if (this != &rhs)
64  Set(rhs.fN, rhs.fArray);
65  return *this;
66 }
67 
68 ////////////////////////////////////////////////////////////////////////////////
69 /// Delete TArrayL object.
70 
72 {
73  delete [] fArray;
74  fArray = nullptr;
75 }
76 
77 ////////////////////////////////////////////////////////////////////////////////
78 /// Adopt array arr into TArrayL, i.e. don't copy arr but use it directly
79 /// in TArrayL. User may not delete arr, TArrayL dtor will do it.
80 
82 {
83  if (fArray)
84  delete [] fArray;
85 
86  fN = n;
87  fArray = arr;
88 }
89 
90 ////////////////////////////////////////////////////////////////////////////////
91 /// Add long c at position i. Check for out of bounds.
92 
94 {
95  if (!BoundsOk("TArrayL::AddAt", i)) return;
96  fArray[i] = c;
97 }
98 
99 ////////////////////////////////////////////////////////////////////////////////
100 /// Set size of this array to n longs.
101 /// A new array is created, the old contents copied to the new array,
102 /// then the old array is deleted.
103 /// This function should not be called if the array was declared via Adopt.
104 
106 {
107  if (n < 0) return;
108  if (n != fN) {
109  Long_t *temp = fArray;
110  if (n != 0) {
111  fArray = new Long_t[n];
112  if (n < fN) {
113  memcpy(fArray, temp, n*sizeof(Long_t));
114  } else if (temp) {
115  memcpy(fArray, temp, fN*sizeof(Long_t));
116  memset(&fArray[fN], 0, (n-fN)*sizeof(Long_t));
117  } else {
118  memset(fArray, 0, n*sizeof(Long_t));
119  }
120  } else {
121  fArray = nullptr;
122  }
123  if (fN) delete [] temp;
124  fN = n;
125  }
126 }
127 
128 ////////////////////////////////////////////////////////////////////////////////
129 /// Set size of this array to n longs and set the contents.
130 /// This function should not be called if the array was declared via Adopt.
131 
132 void TArrayL::Set(Int_t n, const Long_t *array)
133 {
134  if (fArray && fN != n) {
135  delete [] fArray;
136  fArray = nullptr;
137  }
138  fN = n;
139  if ((fN == 0) || !array)
140  return;
141  if (!fArray) fArray = new Long_t[fN];
142  memmove(fArray, array, n*sizeof(Long_t));
143 }
144 
145 ////////////////////////////////////////////////////////////////////////////////
146 /// Stream a TArrayL object.
147 
148 void TArrayL::Streamer(TBuffer &b)
149 {
150  if (b.IsReading()) {
151  Int_t n;
152  b >> n;
153  Set(n);
154  b.ReadFastArray(fArray,n);
155  } else {
156  b << fN;
157  b.WriteFastArray(fArray, fN);
158  }
159 }
160 
c
#define c(i)
Definition: RSha256.hxx:101
n
const Int_t n
Definition: legend1.C:16
TArrayL::fArray
Long_t * fArray
Definition: TArrayL.h:30
ClassImp
#define ClassImp(name)
Definition: Rtypes.h:364
Int_t
int Int_t
Definition: RtypesCore.h:45
TBuffer
Buffer base class used for serializing objects.
Definition: TBuffer.h:43
TArray::fN
Int_t fN
Definition: TArray.h:38
b
#define b(i)
Definition: RSha256.hxx:100
TArrayL::~TArrayL
virtual ~TArrayL()
Delete TArrayL object.
Definition: TArrayL.cxx:71
TBuffer.h
TArrayL::operator=
TArrayL & operator=(const TArrayL &rhs)
TArrayL assignment operator.
Definition: TArrayL.cxx:61
Long_t
long Long_t
Definition: RtypesCore.h:54
TArrayL::Set
void Set(Int_t n)
Set size of this array to n longs.
Definition: TArrayL.cxx:105
TArrayL::TArrayL
TArrayL()
Default TArrayL ctor.
Definition: TArrayL.cxx:26
TArrayL
Array of longs (32 or 64 bits per element).
Definition: TArrayL.h:27
TArray
Abstract array base class.
Definition: TArray.h:31
TArrayL::Adopt
void Adopt(Int_t n, Long_t *array)
Adopt array arr into TArrayL, i.e.
Definition: TArrayL.cxx:81
TArray::BoundsOk
Bool_t BoundsOk(const char *where, Int_t at) const
Definition: TArray.h:77
TArrayL::AddAt
void AddAt(Long_t c, Int_t i)
Add long c at position i. Check for out of bounds.
Definition: TArrayL.cxx:93
TArrayL.h
int