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
|
/*******************************************************************************
* pointer.h
*
* This module contains to Pointer class which is a limited version of std::auto_ptr.
*
* ---------------------------------------------------------------------------
* Persistence of Vision Ray Tracer ('POV-Ray') version 3.7.
* Copyright 1991-2013 Persistence of Vision Raytracer Pty. Ltd.
*
* POV-Ray is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* POV-Ray 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* ---------------------------------------------------------------------------
* POV-Ray is based on the popular DKB raytracer version 2.12.
* DKBTrace was originally written by David K. Buck.
* DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
* ---------------------------------------------------------------------------
* $File: //depot/public/povray/3.x/source/base/pointer.h $
* $Revision: #1 $
* $Change: 6069 $
* $DateTime: 2013/11/06 11:59:40 $
* $Author: chrisc $
*******************************************************************************/
#ifndef POINTER_H
#define POINTER_H
#include "configbase.h"
namespace pov_base
{
// TODO FIXME - the Pointer class should be replaced by one of the boost/std smart pointers
template<class X> class Pointer
{
public:
explicit Pointer(X *p = NULL)
{
ptr = p;
}
Pointer(X& a)
{
ptr = a.release();
}
template<class Y> Pointer(Pointer<Y>& a)
{
ptr = a.release();
}
~Pointer()
{
if(ptr != NULL)
delete ptr;
ptr = NULL;
}
Pointer& operator=(Pointer& a)
{
reset(a.release());
return *this;
}
template<class Y> Pointer& operator=(Pointer<Y>& a)
{
reset(a.release());
return *this;
}
X& operator*() const
{
return *ptr;
}
const X *operator->() const
{
return ptr;
}
X *operator->()
{
return ptr;
}
const X *get() const
{
return ptr;
}
X *release()
{
X *t = ptr;
ptr = NULL;
return t;
}
void reset(X *p = NULL)
{
if(ptr != NULL)
delete ptr;
ptr = p;
}
bool operator==(const void *p) const
{
return (ptr == p);
}
bool operator!=(const void *p) const
{
return (ptr != p);
}
private:
X *ptr;
};
}
#endif
|
