blob: a0469b6584ec90dd39d704967c057bb60476a306 (
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
|
#ifndef ATOM_H
#define ATOM_H
#include <stdint.h>
#include <memory>
#include "bu/exceptions.h"
namespace Bu
{
/**
*
*/
template <typename t, typename talloc=std::allocator<t> >
class Atom
{
private:
typedef struct Atom<t, talloc> MyType;
public:
Atom() :
pData( NULL )
{
}
virtual ~Atom()
{
clear();
}
bool has() const
{
return (pData != NULL);
}
void set( const t &val )
{
clear();
pData = ta.allocate( 1 );
ta.construct( pData, val );
}
t &get()
{
if( !pData )
throw Bu::ExceptionBase("Not set");
return *pData;
}
const t &get() const
{
if( !pData )
throw Bu::ExceptionBase("Not set");
return *pData;
}
void clear()
{
if( pData )
{
ta.destroy( pData );
ta.deallocate( pData, 1 );
pData = NULL;
}
}
operator const t &() const
{
if( !pData )
throw Bu::ExceptionBase("Not set");
return *pData;
}
operator t &()
{
if( !pData )
throw Bu::ExceptionBase("Not set");
return *pData;
}
MyType &operator =( const t &oth )
{
set( oth );
return *this;
}
t *operator ->()
{
if( !pData )
throw Bu::ExceptionBase("Not set");
return pData;
}
t &operator *()
{
if( !pData )
throw Bu::ExceptionBase("Not set");
return *pData;
}
private:
t *pData;
talloc ta;
};
}
#endif
|
