date/
serde.rs

1use std::fmt;
2
3use serde::Deserialize;
4use serde::Deserializer;
5use serde::Serialize;
6use serde::Serializer;
7use serde::de::Visitor;
8
9use crate::Date;
10
11impl Serialize for Date {
12  fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
13    serializer.collect_str(&self.format("%Y-%m-%d"))
14  }
15}
16
17struct DateVisitor;
18
19impl Visitor<'_> for DateVisitor {
20  type Value = Date;
21
22  #[cfg(not(tarpaulin_include))]
23  fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
24    formatter.write_str("a YYYY-MM-DD date string")
25  }
26
27  fn visit_str<E: serde::de::Error>(self, s: &str) -> Result<Self::Value, E> {
28    s.parse().map_err(E::custom)
29  }
30}
31
32impl<'de> Deserialize<'de> for Date {
33  fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
34    deserializer.deserialize_str(DateVisitor)
35  }
36}
37
38#[cfg(test)]
39mod tests {
40  use assert2::check;
41
42  use super::*;
43
44  #[test]
45  fn test_serde() -> Result<(), serde_json::Error> {
46    let json = r#"{"date":"2012-04-21"}"#;
47    let struct_: TestStruct = serde_json::from_str(json)?;
48    check!(struct_.date == date! { 2012-04-21 });
49    let json = serde_json::to_string(&struct_)?;
50    check!(json == r#"{"date":"2012-04-21"}"#);
51    Ok(())
52  }
53
54  #[derive(Deserialize, Serialize)]
55  struct TestStruct {
56    date: Date,
57  }
58}
date/serde.rs

date/
serde.rs
