matchmaker/utils/
percentage.rs

1use std::fmt;
2
3use cli_boilerplate_automation::define_restricted_wrapper;
4use serde::{Deserialize, Deserializer};
5
6define_restricted_wrapper!(
7    #[derive(Clone)]
8    Percentage: u16 = 100
9);
10impl Percentage {
11    pub fn new(value: u16) -> Self {
12        if value <= 100 { Self(value) } else { Self(100) }
13    }
14
15    pub fn compute_clamped(&self, total: u16, min: u16, max: u16) -> u16 {
16        let pct_height = (total * self.inner()).div_ceil(100);
17        pct_height.clamp(min, if max == 0 { total } else { max })
18    }
19
20    pub fn complement(&self) -> Self {
21        Self(100 - self.0)
22    }
23}
24
25impl fmt::Display for Percentage {
26    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
27        write!(f, "{}%", self.0)
28    }
29}
30
31impl TryFrom<u16> for Percentage {
32    type Error = String;
33
34    fn try_from(value: u16) -> Result<Self, Self::Error> {
35        if value > 100 {
36            Err(format!("Percentage out of range: {}", value))
37        } else {
38            Ok(Self::new(value))
39        }
40    }
41}
42impl<'de> Deserialize<'de> for Percentage {
43    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
44    where
45        D: Deserializer<'de>,
46    {
47        let v = u16::deserialize(deserializer)?;
48        v.try_into().map_err(serde::de::Error::custom)
49    }
50}
51impl std::str::FromStr for Percentage {
52    type Err = String;
53
54    fn from_str(s: &str) -> Result<Self, Self::Err> {
55        let s = s.trim_end_matches('%'); // allow optional trailing '%'
56        let v: u16 = s
57            .parse()
58            .map_err(|e: std::num::ParseIntError| format!("Invalid number: {}", e))?;
59        v.try_into()
60    }
61}
matchmaker/utils/percentage.rs

matchmaker/utils/
percentage.rs
