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
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum Tense {
/// настоящее время
Pres,
/// прошедшее время
Past,
/// будущее время
Futr,
}
regex!(
TAG_RE,
r"(?x)
(
pres
|past
|futr
)
"
);
impl Tense {
pub fn try_from_str<S>(s: S) -> Option<Self>
where
S: AsRef<str>,
{
TAG_RE
.captures_iter(s.as_ref())
.next()
.and_then(|cap| match &cap[1] {
"pres" => Some(Tense::Pres),
"past" => Some(Tense::Past),
"futr" => Some(Tense::Futr),
_ => None,
})
}
}