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
|
/* mySTL memory.hpp
*
* Copyright (C) 2003 Sawtooth Consulting Ltd.
*
* This file is part of yaSSL.
*
* yaSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* yaSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/* mySTL memory implements auto_ptr
*
*/
#ifndef mySTL_MEMORY_HPP
#define mySTL_MEMORY_HPP
#ifdef _MSC_VER
// disable operator-> warning for builtins
#pragma warning(disable:4284)
#endif
namespace mySTL {
template<typename T>
struct auto_ptr_ref {
typedef void (*Deletor)(T*);
T* ptr_;
Deletor del_;
auto_ptr_ref(T* p, Deletor d) : ptr_(p), del_(d) {}
};
template<typename T>
class auto_ptr {
typedef void (*Deletor)(T*);
T* ptr_;
Deletor del_;
void Destroy()
{
del_(ptr_);
}
public:
auto_ptr(T* p, Deletor d) : ptr_(p), del_(d) {}
explicit auto_ptr(Deletor d) : ptr_(0), del_(d) {}
~auto_ptr()
{
Destroy();
}
auto_ptr(auto_ptr& other) : ptr_(other.release()), del_(other.del_) {}
auto_ptr& operator=(auto_ptr& that)
{
if (this != &that) {
Destroy();
ptr_ = that.release();
del_ = that.del_;
}
return *this;
}
T* operator->() const
{
return ptr_;
}
T& operator*() const
{
return *ptr_;
}
T* get() const
{
return ptr_;
}
T* release()
{
T* tmp = ptr_;
ptr_ = 0;
return tmp;
}
void reset(T* p = 0)
{
if (ptr_ != p) {
Destroy();
ptr_ = p;
}
}
// auto_ptr_ref conversions
auto_ptr(auto_ptr_ref<T> ref) : ptr_(ref.ptr_), del_(ref.del_) {}
auto_ptr& operator=(auto_ptr_ref<T> ref)
{
if (this->ptr_ != ref.ptr_) {
Destroy();
ptr_ = ref.ptr_;
del_ = ref.del_;
}
return *this;
}
template<typename T2>
operator auto_ptr<T2>()
{
return auto_ptr<T2>(this->release(), this->del_);
}
template<typename T2>
operator auto_ptr_ref<T2>()
{
return auto_ptr_ref<T2>(this->release(), this->del_);
}
};
} // namespace mySTL
#endif // mySTL_MEMORY_HPP
|
