shex_ast 0.0.2

Rust implementation of ShEx
Documentation 
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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

use core::fmt;
use std::result;

use rust_decimal::Decimal;
use serde::{de::Visitor, Deserialize, Serialize, Serializer};

#[derive(Debug, PartialEq, Clone)]
pub enum NumericLiteral {
    Integer(usize),
    Decimal(Decimal),
    Double(f64),
}

impl Serialize for NumericLiteral {
    fn serialize<S>(&self, serializer: S) -> result::Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        match self {
            NumericLiteral::Integer(n) => {
                let c: u128 = (*n).try_into().unwrap();
                serializer.serialize_u128(c)
            }
            NumericLiteral::Decimal(d) => {
                let f: f64 = (*d).try_into().unwrap();
                serializer.serialize_f64(f)
            }
            NumericLiteral::Double(d) => serializer.serialize_f64(*d),
        }
    }
}

impl<'de> Deserialize<'de> for NumericLiteral {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: serde::Deserializer<'de>,
    {
        struct NumericLiteralVisitor;

        impl<'de> Visitor<'de> for NumericLiteralVisitor {
            type Value = NumericLiteral;

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

            fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E>
            where
                E: serde::de::Error,
            {
                let n: usize = v.try_into().unwrap();
                Ok(NumericLiteral::Integer(n))
            }

            fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
            where
                E: serde::de::Error,
            {
                let n: usize = v.try_into().unwrap();
                Ok(NumericLiteral::Integer(n))
            }

            fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
            where
                E: serde::de::Error,
            {
                let n: usize = v.try_into().unwrap();
                Ok(NumericLiteral::Integer(n))
            }

            fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>
            where
                E: serde::de::Error,
            {
                let n: usize = v.try_into().unwrap();
                Ok(NumericLiteral::Integer(n))
            }

            fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E>
            where
                E: serde::de::Error,
            {
                let n: usize = v.try_into().unwrap();
                Ok(NumericLiteral::Integer(n))
            }

            fn visit_f64<E>(self, v: f64) -> Result<Self::Value, E>
            where
                E: serde::de::Error,
            {
                let n: Decimal = v.try_into().unwrap();
                Ok(NumericLiteral::Decimal(n))
            }

            fn visit_f32<E>(self, v: f32) -> Result<Self::Value, E>
            where
                E: serde::de::Error,
            {
                let n: Decimal = v.try_into().unwrap();
                Ok(NumericLiteral::Decimal(n))
            }
        }

        deserializer.deserialize_any(NumericLiteralVisitor)
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use rust_decimal_macros::dec;

    #[test]
    fn test_serialize_integer() {
        let n = NumericLiteral::Integer(23);
        let json_nc = serde_json::to_string(&n).unwrap();
        assert_eq!(json_nc, "23");
    }

    #[test]
    fn test_deserialize_integer() {
        let str = r#"23"#;
        let deser: NumericLiteral = serde_json::from_str(str).unwrap();
        let expected = NumericLiteral::Integer(23);
        assert_eq!(deser, expected);
    }

    #[test]
    fn test_serialize_decimal() {
        let n = NumericLiteral::Decimal(dec!(5.5));
        let expected = r#"5.5"#;
        let json = serde_json::to_string(&n).unwrap();
        assert_eq!(json, expected);
    }

    #[test]
    fn test_deserialize_decimal() {
        let str = r#"5.5"#;
        let deser: NumericLiteral = serde_json::from_str(str).unwrap();
        let expected = NumericLiteral::Decimal(dec!(5.5));
        assert_eq!(deser, expected);
    }
}