1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128

use serde::{
    de::{Error, SeqAccess, Visitor},
    {Deserialize, Deserializer, Serialize, Serializer},
};

use crate::{Glob, GlobSet, GlobSetBuilder};

impl Serialize for Glob {
    fn serialize<S: Serializer>(
        &self,
        serializer: S,
    ) -> Result<S::Ok, S::Error> {
        serializer.serialize_str(self.glob())
    }
}

struct GlobVisitor;

impl<'de> Visitor<'de> for GlobVisitor {
    type Value = Glob;

    fn expecting(
        &self,
        formatter: &mut std::fmt::Formatter,
    ) -> std::fmt::Result {
        formatter.write_str("a glob pattern")
    }

    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
    where
        E: Error,
    {
        Glob::new(v).map_err(serde::de::Error::custom)
    }
}

impl<'de> Deserialize<'de> for Glob {
    fn deserialize<D: Deserializer<'de>>(
        deserializer: D,
    ) -> Result<Self, D::Error> {
        deserializer.deserialize_str(GlobVisitor)
    }
}

struct GlobSetVisitor;

impl<'de> Visitor<'de> for GlobSetVisitor {
    type Value = GlobSet;

    fn expecting(
        &self,
        formatter: &mut std::fmt::Formatter,
    ) -> std::fmt::Result {
        formatter.write_str("an array of glob patterns")
    }

    fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
    where
        A: SeqAccess<'de>,
    {
        let mut builder = GlobSetBuilder::new();
        while let Some(glob) = seq.next_element()? {
            builder.add(glob);
        }
        builder.build().map_err(serde::de::Error::custom)
    }
}

impl<'de> Deserialize<'de> for GlobSet {
    fn deserialize<D: Deserializer<'de>>(
        deserializer: D,
    ) -> Result<Self, D::Error> {
        deserializer.deserialize_seq(GlobSetVisitor)
    }
}

#[cfg(test)]
mod tests {
    use std::collections::HashMap;

    use crate::{Glob, GlobSet};

    #[test]
    fn glob_deserialize_borrowed() {
        let string = r#"{"markdown": "*.md"}"#;

        let map: HashMap<String, Glob> =
            serde_json::from_str(&string).unwrap();
        assert_eq!(map["markdown"], Glob::new("*.md").unwrap());
    }

    #[test]
    fn glob_deserialize_owned() {
        let string = r#"{"markdown": "*.md"}"#;

        let v: serde_json::Value = serde_json::from_str(&string).unwrap();
        let map: HashMap<String, Glob> = serde_json::from_value(v).unwrap();
        assert_eq!(map["markdown"], Glob::new("*.md").unwrap());
    }

    #[test]
    fn glob_deserialize_error() {
        let string = r#"{"error": "["}"#;

        let map = serde_json::from_str::<HashMap<String, Glob>>(&string);

        assert!(map.is_err());
    }

    #[test]
    fn glob_json_works() {
        let test_glob = Glob::new("src/**/*.rs").unwrap();

        let ser = serde_json::to_string(&test_glob).unwrap();
        assert_eq!(ser, "\"src/**/*.rs\"");

        let de: Glob = serde_json::from_str(&ser).unwrap();
        assert_eq!(test_glob, de);
    }

    #[test]
    fn glob_set_deserialize() {
        let j = r#" ["src/**/*.rs", "README.md"] "#;
        let set: GlobSet = serde_json::from_str(j).unwrap();
        assert!(set.is_match("src/lib.rs"));
        assert!(!set.is_match("Cargo.lock"));
    }
}