1 use crate::LanguageIdentifier;
2 use serde::{Deserialize, Deserializer, Serialize, Serializer};
3
4 impl Serialize for LanguageIdentifier {
serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer,5 fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
6 where
7 S: Serializer,
8 {
9 serializer.serialize_str(&self.to_string())
10 }
11 }
12
13 impl<'de> Deserialize<'de> for LanguageIdentifier {
deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer<'de>,14 fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
15 where
16 D: Deserializer<'de>,
17 {
18 struct LanguageIdentifierVisitor;
19
20 impl<'de> serde::de::Visitor<'de> for LanguageIdentifierVisitor {
21 type Value = LanguageIdentifier;
22
23 fn expecting(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
24 write!(formatter, "A valid Unicode Language Identifier")
25 }
26
27 fn visit_str<E>(self, s: &str) -> Result<Self::Value, E>
28 where
29 E: serde::de::Error,
30 {
31 s.parse::<LanguageIdentifier>()
32 .map_err(serde::de::Error::custom)
33 }
34 }
35
36 deserializer.deserialize_string(LanguageIdentifierVisitor)
37 }
38 }
39
40 #[test]
serialize() -> Result<(), Box<dyn std::error::Error>>41 fn serialize() -> Result<(), Box<dyn std::error::Error>> {
42 let fr = serde_json::json!("fr".parse::<LanguageIdentifier>()?);
43 let en = serde_json::json!("en-US".parse::<LanguageIdentifier>()?);
44
45 assert_eq!(serde_json::to_string(&fr)?, r#""fr""#);
46 assert_eq!(serde_json::to_string(&en)?, r#""en-US""#);
47
48 Ok(())
49 }
50
51 #[test]
deserialize() -> Result<(), Box<dyn std::error::Error>>52 fn deserialize() -> Result<(), Box<dyn std::error::Error>> {
53 let fr = serde_json::from_str::<LanguageIdentifier>(r#""fr""#)?;
54 let en = serde_json::from_str::<LanguageIdentifier>(r#""en-US""#)?;
55
56 assert_eq!(fr, "fr".parse::<LanguageIdentifier>()?);
57 assert_eq!(en, "en-US".parse::<LanguageIdentifier>()?);
58
59 Ok(())
60 }
61