routee_compass_core/model/unit/
distance_unit.rs

1use serde::{Deserialize, Serialize};
2use std::str::FromStr;
3use uom::si::f64::Length;
4
5#[derive(Debug, Serialize, Deserialize, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Default)]
6#[serde(rename_all = "snake_case", try_from = "String")]
7pub enum DistanceUnit {
8    Meters,
9    Kilometers,
10    #[default]
11    Miles,
12    Inches,
13    Feet,
14}
15
16impl DistanceUnit {
17    pub fn to_uom(&self, value: f64) -> Length {
18        match self {
19            DistanceUnit::Meters => Length::new::<uom::si::length::meter>(value),
20            DistanceUnit::Kilometers => Length::new::<uom::si::length::kilometer>(value),
21            DistanceUnit::Miles => Length::new::<uom::si::length::mile>(value),
22            DistanceUnit::Inches => Length::new::<uom::si::length::inch>(value),
23            DistanceUnit::Feet => Length::new::<uom::si::length::foot>(value),
24        }
25    }
26    pub fn from_uom(&self, value: Length) -> f64 {
27        match self {
28            DistanceUnit::Meters => value.get::<uom::si::length::meter>(),
29            DistanceUnit::Kilometers => value.get::<uom::si::length::kilometer>(),
30            DistanceUnit::Miles => value.get::<uom::si::length::mile>(),
31            DistanceUnit::Inches => value.get::<uom::si::length::inch>(),
32            DistanceUnit::Feet => value.get::<uom::si::length::foot>(),
33        }
34    }
35}
36
37impl std::fmt::Display for DistanceUnit {
38    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
39        let s = serde_json::to_string(self)
40            .map_err(|_| std::fmt::Error)?
41            .replace('\"', "");
42        write!(f, "{s}")
43    }
44}
45
46impl FromStr for DistanceUnit {
47    type Err = String;
48
49    fn from_str(s: &str) -> Result<Self, Self::Err> {
50        use DistanceUnit as D;
51        match s.trim().to_lowercase().as_str() {
52            "meters" | "meter" => Ok(D::Meters),
53            "km" | "kilometers" | "kilometer" => Ok(D::Kilometers),
54            "miles" | "mile" => Ok(D::Miles),
55            "inches" | "inch" | "in" => Ok(D::Inches),
56            "feet" | "ft" => Ok(D::Feet),
57            _ => Err(format!("unknown distance unit '{s}'")),
58        }
59    }
60}
61
62impl TryFrom<String> for DistanceUnit {
63    type Error = String;
64    fn try_from(value: String) -> Result<Self, Self::Error> {
65        Self::from_str(&value)
66    }
67}
routee_compass_core/model/unit/distance_unit.rs

routee_compass_core/model/unit/
distance_unit.rs
