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de.rs
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de.rs
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use serde::{Deserialize, Serialize};
// Newtype used for correct deserialization
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Default, Clone)]
pub struct SemverString(pub String);
impl From<SemverString> for String {
fn from(value: SemverString) -> Self {
value.0
}
}
impl AsRef<str> for SemverString {
fn as_ref(&self) -> &str {
self.0.as_str()
}
}
impl<'de> Deserialize<'de> for SemverString {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde::Deserializer<'de>,
{
// We use this to massage numerical semver versions to strings
// e.g. 2
#[derive(Deserialize)]
#[serde(untagged)]
enum StringOrNum {
String(String),
Int(u64),
Float(f32),
}
match StringOrNum::deserialize(deserializer)? {
StringOrNum::String(s) => Ok(SemverString(s)),
StringOrNum::Int(x) => Ok(SemverString(x.to_string())),
StringOrNum::Float(f) => Ok(SemverString(f.to_string())),
}
}
}
#[cfg(test)]
mod test {
use std::collections::HashMap;
use super::*;
#[test]
fn test_semver() {
let input = "foo: 1.2.3
bar: 2
baz: latest
oop: 1.3
";
let result: HashMap<String, SemverString> = serde_yaml::from_str(input).unwrap();
assert_eq!(result["foo"].as_ref(), "1.2.3");
assert_eq!(result["bar"].as_ref(), "2");
assert_eq!(result["baz"].as_ref(), "latest");
assert_eq!(result["oop"].as_ref(), "1.3")
}
}