json_matcher/
error.rs

1use std::fmt::Display;
2
3#[derive(Debug, Clone, PartialEq, Eq)]
4pub enum JsonPathElement {
5    Root,
6    Index(usize),
7    Key(String),
8}
9
10impl Display for JsonPathElement {
11    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
12        let s = match self {
13            JsonPathElement::Root => "$".to_string(),
14            JsonPathElement::Index(index) => format!("{}", index),
15            JsonPathElement::Key(key) => key.to_string(),
16        };
17        write!(f, "{}", s)
18    }
19}
20
21#[derive(Debug, Clone, PartialEq, Eq)]
22pub struct JsonPath(Vec<JsonPathElement>);
23
24impl Display for JsonPath {
25    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
26        write!(
27            f,
28            "{}",
29            self.0
30                .iter()
31                .map(|e| format!("{}", e))
32                .collect::<Vec<String>>()
33                .join(".")
34        )
35    }
36}
37
38impl From<Vec<JsonPathElement>> for JsonPath {
39    fn from(elements: Vec<JsonPathElement>) -> Self {
40        Self(elements)
41    }
42}
43
44impl JsonPath {
45    pub fn extend<T: Into<JsonPath>>(mut self, elements: T) -> Self {
46        let mut elements = Into::<JsonPath>::into(elements).0;
47        if elements.first() == Some(&JsonPathElement::Root) {
48            elements = elements.into_iter().skip(1).collect();
49        }
50        let path = &mut self.0;
51        path.extend(elements);
52        self
53    }
54}
55
56impl Default for JsonPath {
57    fn default() -> Self {
58        Self(vec![JsonPathElement::Root])
59    }
60}
61
62#[derive(Debug, Clone, PartialEq, Eq)]
63pub struct JsonMatcherError {
64    pub path: JsonPath,
65    pub message: String,
66}
67
68impl JsonMatcherError {
69    pub fn at_root<T: Into<String>>(message: T) -> Self {
70        let message = message.into();
71        Self {
72            path: JsonPath::default(),
73            message,
74        }
75    }
76}
77
78impl Display for JsonMatcherError {
79    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
80        write!(f, "{}: {}", self.path, self.message)
81    }
82}
json_matcher/error.rs

json_matcher/
error.rs
