chrono_tz/
serde.rs

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1extern crate serde;
2
3use self::serde::{de, Deserialize, Deserializer, Serialize, Serializer};
4use core::fmt;
5
6use timezones::Tz;
7
8impl Serialize for Tz {
9    fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
10        serializer.serialize_str(&self.name())
11    }
12}
13
14impl<'de> Deserialize<'de> for Tz {
15    fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
16        struct Visitor;
17
18        impl<'de> de::Visitor<'de> for Visitor {
19            type Value = Tz;
20
21            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
22                write!(formatter, "an IANA timezone string")
23            }
24
25            fn visit_str<E: de::Error>(self, value: &str) -> Result<Tz, E> {
26                value.parse::<Tz>().map_err(|e| E::custom(e))
27            }
28        }
29
30        deserializer.deserialize_str(Visitor)
31    }
32}
33
34#[cfg(test)]
35mod tests {
36    extern crate serde_test;
37
38    use self::serde_test::{assert_de_tokens_error, assert_tokens, Token};
39    use timezones::Tz::{self, Etc__UTC, Europe__London, UTC};
40
41    #[test]
42    fn serde_ok_both_ways() {
43        assert_tokens(&Europe__London, &[Token::String("Europe/London")]);
44        assert_tokens(&Etc__UTC, &[Token::String("Etc/UTC")]);
45        assert_tokens(&UTC, &[Token::String("UTC")]);
46    }
47
48    #[test]
49    fn serde_de_error() {
50        assert_de_tokens_error::<Tz>(
51            &[Token::Str("Europe/L")],
52            "'Europe/L' is not a valid timezone",
53        );
54        assert_de_tokens_error::<Tz>(&[Token::Str("")], "'' is not a valid timezone");
55    }
56}
chrono_tz/serde.rs

chrono_tz/
serde.rs
