vecmap/set/
serde.rs

1use super::VecSet;
2use core::fmt;
3use core::marker::PhantomData;
4use serde::de::{self, value::SeqDeserializer};
5use serde::ser;
6
7impl<T> ser::Serialize for VecSet<T>
8where
9    T: ser::Serialize + Eq,
10{
11    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
12    where
13        S: ser::Serializer,
14    {
15        serializer.collect_seq(self)
16    }
17}
18
19impl<'de, T> de::Deserialize<'de> for VecSet<T>
20where
21    T: de::Deserialize<'de> + Eq,
22{
23    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
24    where
25        D: de::Deserializer<'de>,
26    {
27        struct VecSetVisitor<T>(PhantomData<T>);
28
29        impl<'de, T> de::Visitor<'de> for VecSetVisitor<T>
30        where
31            T: de::Deserialize<'de> + Eq,
32        {
33            type Value = VecSet<T>;
34
35            fn expecting(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
36                fmt.write_str("a sequence")
37            }
38
39            fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
40            where
41                A: de::SeqAccess<'de>,
42            {
43                let mut values = VecSet::with_capacity(seq.size_hint().unwrap_or(0));
44
45                while let Some(element) = seq.next_element()? {
46                    values.insert(element);
47                }
48
49                Ok(values)
50            }
51        }
52
53        deserializer.deserialize_seq(VecSetVisitor(PhantomData))
54    }
55}
56
57impl<'de, T, E> de::IntoDeserializer<'de, E> for VecSet<T>
58where
59    T: de::IntoDeserializer<'de, E> + Eq,
60    E: de::Error,
61{
62    type Deserializer = SeqDeserializer<<Self as IntoIterator>::IntoIter, E>;
63
64    fn into_deserializer(self) -> Self::Deserializer {
65        SeqDeserializer::new(self.into_iter())
66    }
67}
68
69#[cfg(test)]
70mod test {
71    use super::*;
72    use serde_test::{assert_tokens, Token};
73
74    #[test]
75    fn ser_de_empty() {
76        let set = VecSet::<&str>::new();
77        assert_tokens(&set, &[Token::Seq { len: Some(0) }, Token::SeqEnd]);
78    }
79
80    #[test]
81    fn ser_de() {
82        let set = VecSet::from(["a", "b", "c"]);
83        assert_tokens(
84            &set,
85            &[
86                Token::Seq { len: Some(3) },
87                Token::BorrowedStr("a"),
88                Token::BorrowedStr("b"),
89                Token::BorrowedStr("c"),
90                Token::SeqEnd,
91            ],
92        );
93    }
94}
vecmap/set/serde.rs

vecmap/set/
serde.rs
