routee_compass_core/model/unit/
volume_unit.rs

1use serde::{Deserialize, Serialize};
2use std::str::FromStr;
3
4#[derive(Debug, Serialize, Deserialize, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Default)]
5#[serde(rename_all = "snake_case", try_from = "String")]
6pub enum VolumeUnit {
7    #[default]
8    GallonsUs,
9    GallonsUk,
10    Liters,
11}
12
13impl std::fmt::Display for VolumeUnit {
14    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
15        let s = serde_json::to_string(self)
16            .map_err(|_| std::fmt::Error)?
17            .replace('\"', "");
18        write!(f, "{s}")
19    }
20}
21
22impl FromStr for VolumeUnit {
23    type Err = String;
24
25    fn from_str(s: &str) -> Result<Self, Self::Err> {
26        use VolumeUnit as V;
27        match s.trim().to_lowercase().as_str() {
28            "gal" | "usgal" | "usgals" => Ok(V::GallonsUs),
29            "ukgal" | "ukgals" => Ok(V::GallonsUk),
30            "liter" | "liters" | "l" => Ok(V::Liters),
31            _ => Err(format!("unknown volume unit '{s}'")),
32        }
33    }
34}
35
36impl TryFrom<String> for VolumeUnit {
37    type Error = String;
38    fn try_from(value: String) -> Result<Self, Self::Error> {
39        Self::from_str(&value)
40    }
41}

routee_compass_core/model/unit/volume_unit.rs

routee_compass_core/model/unit/
volume_unit.rs