routee_compass_core/model/unit/
speed_unit.rs

1use serde::{Deserialize, Deserializer, Serialize};
2use std::str::FromStr;
3use uom::si::f64::Velocity;
4
5#[derive(Debug, Clone, PartialEq, Eq, Copy, Hash, PartialOrd, Default)]
6pub enum SpeedUnit {
7    KPH,
8    #[default]
9    MPH,
10    MPS,
11}
12
13impl SpeedUnit {
14    pub fn to_uom(&self, value: f64) -> Velocity {
15        match self {
16            Self::KPH => Velocity::new::<uom::si::velocity::kilometer_per_hour>(value),
17            Self::MPH => Velocity::new::<uom::si::velocity::mile_per_hour>(value),
18            Self::MPS => Velocity::new::<uom::si::velocity::meter_per_second>(value),
19        }
20    }
21
22    pub fn from_uom(&self, value: Velocity) -> f64 {
23        match self {
24            Self::KPH => value.get::<uom::si::velocity::kilometer_per_hour>(),
25            Self::MPH => value.get::<uom::si::velocity::mile_per_hour>(),
26            Self::MPS => value.get::<uom::si::velocity::meter_per_second>(),
27        }
28    }
29}
30
31impl std::fmt::Display for SpeedUnit {
32    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
33        match self {
34            SpeedUnit::KPH => write!(f, "kilometers/hour"),
35            SpeedUnit::MPH => write!(f, "miles/hour"),
36            SpeedUnit::MPS => write!(f, "meters/second"),
37        }
38    }
39}
40
41impl FromStr for SpeedUnit {
42    type Err = String;
43
44    fn from_str(s: &str) -> Result<Self, Self::Err> {
45        match s {
46            "mph" => Ok(SpeedUnit::MPH),
47            "kph" => Ok(SpeedUnit::KPH),
48            "mps" => Ok(SpeedUnit::MPS),
49            "miles/hour" => Ok(SpeedUnit::MPH),
50            "kilometers/hour" => Ok(SpeedUnit::KPH),
51            "meters/second" => Ok(SpeedUnit::MPS),
52            _ => Err(format!(
53                "expected speed unit as 'kph', 'mph', 'mps', or in the format '<distance unit>/<time unit>', found: {s}"
54            )),
55        }
56    }
57}
58
59impl<'de> Deserialize<'de> for SpeedUnit {
60    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
61    where
62        D: Deserializer<'de>,
63    {
64        let s = String::deserialize(deserializer)?;
65        FromStr::from_str(&s).map_err(serde::de::Error::custom)
66    }
67}
68
69impl Serialize for SpeedUnit {
70    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
71    where
72        S: serde::Serializer,
73    {
74        serializer.collect_str(&self.to_string())
75    }
76}
routee_compass_core/model/unit/speed_unit.rs

routee_compass_core/model/unit/
speed_unit.rs
