blob: 9fc212dbefa1791811770a043ce6e5bb0e4b9e3c (
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
|
/* $Id$ */
/** @file smallvec.h Simple vector class that allows allocating an item without the need to copy this->data needlessly. */
#ifndef SMALLVEC_H
#define SMALLVEC_H
#include "../core/alloc_func.hpp"
#include "../core/math_func.hpp"
template <typename T, uint S>
struct SmallVector {
T *data;
uint items;
uint capacity;
SmallVector() : data(NULL), items(0), capacity(0) { }
~SmallVector()
{
free(this->data);
}
/**
* Remove all items from the list.
*/
void Clear()
{
/* In fact we just reset the item counter avoiding the need to
* probably reallocate the same amount of memory the list was
* previously using. */
this->items = 0;
}
/**
* Compact the list down to the smallest block size boundary.
*/
void Compact()
{
uint capacity = Align(this->items, S);
if (capacity >= this->capacity) return;
this->capacity = capacity;
this->data = ReallocT(this->data, this->capacity);
}
/**
* Append an item and return it.
*/
T *Append()
{
if (this->items == this->capacity) {
this->capacity += S;
this->data = ReallocT(this->data, this->capacity);
}
return &this->data[this->items++];
}
/**
* Get the number of items in the list.
*/
uint Length() const
{
return this->items;
}
const T *Begin() const
{
return this->data;
}
T *Begin()
{
return this->data;
}
const T *End() const
{
return &this->data[this->items];
}
T *End()
{
return &this->data[this->items];
}
const T *Get(uint index) const
{
return &this->data[index];
}
T *Get(uint index)
{
return &this->data[index];
}
const T &operator[](uint index) const
{
return this->data[index];
}
T &operator[](uint index)
{
return this->data[index];
}
};
#endif /* SMALLVEC_H */
|
