-
Notifications
You must be signed in to change notification settings - Fork 7
/
Stopwatch.php
156 lines (124 loc) · 3.65 KB
/
Stopwatch.php
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
<?php
declare(strict_types=1);
namespace Aeon\Calendar;
use Aeon\Calendar\Exception\Exception;
use Aeon\Calendar\TimeUnit\HRTime;
/**
* @psalm-pure
*/
final class Stopwatch
{
/**
* @var array{int, int}|null
*/
private ?array $start;
/**
* @var array<array{int, int}>
*/
private array $laps;
/**
* @var array{int, int}|null
*/
private ?array $end;
public function __construct()
{
$this->start = null;
$this->laps = [];
$this->end = null;
}
public function isStarted() : bool
{
return $this->start !== null;
}
public function isStopped() : bool
{
return $this->end !== null;
}
/**
* Stopwatch::lap() used once will generate two laps, first between start and lap[0] and
* second between lap[0] and end.
*/
public function laps() : int
{
return \count($this->laps) > 0
? \count($this->laps) + 1
: 0;
}
public function start() : void
{
$this->start = \hrtime(false);
}
public function lap() : void
{
if ($this->start === null) {
throw new Exception('Stopwatch not started');
}
$this->laps[] = \hrtime(false);
}
public function stop() : void
{
if ($this->start === null) {
throw new Exception('Stopwatch not started');
}
if ($this->end !== null) {
throw new Exception('Stopwatch already stopped');
}
$this->end = \hrtime(false);
}
public function elapsedTime(int $lap) : TimeUnit
{
if ($this->start === null) {
throw new Exception('Stopwatch not started');
}
if (\count($this->laps) === 0) {
throw new Exception('Stopwatch does not have any laps.');
}
if ($lap === 1) {
return $this->firstLapElapsedTime();
}
if ($lap - 1 === \count($this->laps)) {
return $this->lastLapElapsedTime();
}
if (!isset($this->laps[$lap - 1])) {
throw new Exception(\sprintf('Lap %d not exists', $lap));
}
return HRTime::convert($this->laps[$lap - 1][0], $this->laps[$lap - 1][1])
->sub(HRTime::convert($this->laps[$lap - 2][0], $this->laps[$lap - 2][1]));
}
public function firstLapElapsedTime() : TimeUnit
{
if ($this->start === null) {
throw new Exception('Stopwatch not started');
}
if (\count($this->laps) === 0) {
throw new Exception('Stopwatch does not have any laps.');
}
return HRTime::convert($this->laps[0][0], $this->laps[0][1])
->sub(HRTime::convert($this->start[0], $this->start[1]));
}
public function lastLapElapsedTime() : TimeUnit
{
if ($this->start === null) {
throw new Exception('Stopwatch not started');
}
if ($this->end === null) {
throw new Exception('Stopwatch not stopped');
}
if (\count($this->laps) === 0) {
throw new Exception('Stopwatch does not have any laps.');
}
return HRTime::convert($this->end[0], $this->end[1])
->sub(HRTime::convert(\end($this->laps)[0], \end($this->laps)[1]));
}
public function totalElapsedTime() : TimeUnit
{
if ($this->start === null) {
throw new Exception('Stopwatch not started');
}
if ($this->end === null) {
throw new Exception('Stopwatch not stopped');
}
return HRTime::convert($this->end[0], $this->end[1])
->sub(HRTime::convert($this->start[0], $this->start[1]));
}
}