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
use chrono::{DateTime, Duration, Local};
#[derive(Clone, Debug)]
pub struct StopWatch {
pub elapsed: Duration,
pub lap_elapsed: Duration,
pub pause_moments: Vec<DateTime<Local>>,
pub start_moments: Vec<DateTime<Local>>,
pub lap_moments: Vec<DateTime<Local>>,
pub laps: Vec<Duration>,
pub paused: bool,
}
impl StopWatch {
pub fn new() -> Self {
Self {
elapsed: Duration::zero(),
lap_elapsed: Duration::zero(),
start_moments: Vec::new(),
pause_moments: Vec::new(),
lap_moments: Vec::new(),
laps: Vec::new(),
paused: true,
}
}
pub fn read(&self) -> Duration {
if self.paused {
self.elapsed
} else {
self.elapsed + (Local::now() - self.last_start())
}
}
pub fn pause_or_resume(&mut self) {
if self.paused {
self.resume();
} else {
self.pause();
}
}
pub fn lap(&mut self) -> Option<Duration> {
if self.paused {
None
} else {
let moment = Local::now();
let lap = self.read_lap_elapsed(moment);
self.lap_moments.push(moment);
self.laps.push(lap);
self.lap_elapsed = Duration::zero();
Some(lap)
}
}
fn read_lap_elapsed(&self, moment: DateTime<Local>) -> Duration {
self.lap_elapsed
+ if self.lap_elapsed == Duration::zero() && !self.lap_moments.is_empty() {
moment - self.last_lap()
} else {
moment - self.last_start()
}
}
fn last_start(&self) -> DateTime<Local> {
self.start_moments[self.start_moments.len() - 1]
}
fn last_lap(&self) -> DateTime<Local> {
self.lap_moments[self.lap_moments.len() - 1]
}
pub fn pause(&mut self) {
let moment = Local::now();
self.pause_moments.push(moment);
self.elapsed = self.elapsed + (moment - self.last_start());
self.lap_elapsed = self.read_lap_elapsed(moment);
self.paused = true;
}
pub fn resume(&mut self) {
self.start_moments.push(Local::now());
self.paused = false;
}
}