blob: 5259aa8e492ddf91b9686138b9413a41a8d1f830 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
#ifndef CRYPTOPP_SMARTPTR_H
#define CRYPTOPP_SMARTPTR_H
#include "config.h"
#include <algorithm>
NAMESPACE_BEGIN(CryptoPP)
template <class T> class simple_ptr
{
public:
simple_ptr() : m_p(NULL) {}
~simple_ptr() {delete m_p;}
T *m_p;
};
template <class T> class member_ptr
{
public:
explicit member_ptr(T *p = NULL) : m_p(p) {}
~member_ptr();
const T& operator*() const { return *m_p; }
T& operator*() { return *m_p; }
const T* operator->() const { return m_p; }
T* operator->() { return m_p; }
const T* get() const { return m_p; }
T* get() { return m_p; }
T* release()
{
T *old_p = m_p;
m_p = 0;
return old_p;
}
void reset(T *p = 0);
protected:
member_ptr(const member_ptr<T>& rhs); // copy not allowed
void operator=(const member_ptr<T>& rhs); // assignment not allowed
T *m_p;
};
template <class T> member_ptr<T>::~member_ptr() {delete m_p;}
template <class T> void member_ptr<T>::reset(T *p) {delete m_p; m_p = p;}
// ********************************************************
template<class T> class value_ptr : public member_ptr<T>
{
public:
value_ptr(const T &obj) : member_ptr<T>(new T(obj)) {}
value_ptr(T *p = NULL) : member_ptr<T>(p) {}
value_ptr(const value_ptr<T>& rhs)
: member_ptr<T>(rhs.m_p ? new T(*rhs.m_p) : NULL) {}
value_ptr<T>& operator=(const value_ptr<T>& rhs);
bool operator==(const value_ptr<T>& rhs)
{
return (!this->m_p && !rhs.m_p) || (this->m_p && rhs.m_p && *this->m_p == *rhs.m_p);
}
};
template <class T> value_ptr<T>& value_ptr<T>::operator=(const value_ptr<T>& rhs)
{
T *old_p = this->m_p;
this->m_p = rhs.m_p ? new T(*rhs.m_p) : NULL;
delete old_p;
return *this;
}
// ********************************************************
template<class T> class clonable_ptr : public member_ptr<T>
{
public:
clonable_ptr(const T &obj) : member_ptr<T>(obj.Clone()) {}
clonable_ptr(T *p = NULL) : member_ptr<T>(p) {}
clonable_ptr(const clonable_ptr<T>& rhs)
: member_ptr<T>(rhs.m_p ? rhs.m_p->Clone() : NULL) {}
clonable_ptr<T>& operator=(const clonable_ptr<T>& rhs);
};
template <class T> clonable_ptr<T>& clonable_ptr<T>::operator=(const clonable_ptr<T>& rhs)
{
T *old_p = this->m_p;
this->m_p = rhs.m_p ? rhs.m_p->Clone() : NULL;
delete old_p;
return *this;
}
// ********************************************************
template<class T> class counted_ptr
{
public:
explicit counted_ptr(T *p = 0);
counted_ptr(const T &r) : m_p(0) {attach(r);}
counted_ptr(const counted_ptr<T>& rhs);
~counted_ptr();
const T& operator*() const { return *m_p; }
T& operator*() { return *m_p; }
const T* operator->() const { return m_p; }
T* operator->() { return get(); }
const T* get() const { return m_p; }
T* get();
void attach(const T &p);
counted_ptr<T> & operator=(const counted_ptr<T>& rhs);
private:
T *m_p;
};
template <class T> counted_ptr<T>::counted_ptr(T *p)
: m_p(p)
{
if (m_p)
m_p->m_referenceCount = 1;
}
template <class T> counted_ptr<T>::counted_ptr(const counted_ptr<T>& rhs)
: m_p(rhs.m_p)
{
if (m_p)
m_p->m_referenceCount++;
}
template <class T> counted_ptr<T>::~counted_ptr()
{
if (m_p && --m_p->m_referenceCount == 0)
delete m_p;
}
template <class T> void counted_ptr<T>::attach(const T &r)
{
if (m_p && --m_p->m_referenceCount == 0)
delete m_p;
if (r.m_referenceCount == 0)
{
m_p = r.clone();
m_p->m_referenceCount = 1;
}
else
{
m_p = const_cast<T *>(&r);
m_p->m_referenceCount++;
}
}
template <class T> T* counted_ptr<T>::get()
{
if (m_p && m_p->m_referenceCount > 1)
{
T *temp = m_p->clone();
m_p->m_referenceCount--;
m_p = temp;
m_p->m_referenceCount = 1;
}
return m_p;
}
template <class T> counted_ptr<T> & counted_ptr<T>::operator=(const counted_ptr<T>& rhs)
{
if (m_p != rhs.m_p)
{
if (m_p && --m_p->m_referenceCount == 0)
delete m_p;
m_p = rhs.m_p;
if (m_p)
m_p->m_referenceCount++;
}
return *this;
}
// ********************************************************
template <class T> class vector_member_ptrs
{
public:
vector_member_ptrs(size_t size=0)
: m_size(size), m_ptr(new member_ptr<T>[size]) {}
~vector_member_ptrs()
{delete [] this->m_ptr;}
member_ptr<T>& operator[](size_t index)
{assert(index<this->m_size); return this->m_ptr[index];}
const member_ptr<T>& operator[](size_t index) const
{assert(index<this->m_size); return this->m_ptr[index];}
size_t size() const {return this->m_size;}
void resize(size_t newSize)
{
member_ptr<T> *newPtr = new member_ptr<T>[newSize];
for (size_t i=0; i<this->m_size && i<newSize; i++)
newPtr[i].reset(this->m_ptr[i].release());
delete [] this->m_ptr;
this->m_size = newSize;
this->m_ptr = newPtr;
}
private:
vector_member_ptrs(const vector_member_ptrs<T> &c); // copy not allowed
void operator=(const vector_member_ptrs<T> &x); // assignment not allowed
size_t m_size;
member_ptr<T> *m_ptr;
};
NAMESPACE_END
#endif
|
