serde_helpers/
error.rs

1use std::borrow::Borrow;
2use std::error::Error as StdError;
3use std::fmt::{self, Display, Formatter};
4
5#[cfg(feature = "serde_json")]
6use serde_json::error::Error as JsonError;
7#[cfg(feature = "serde_yaml")]
8use serde_yaml::Error as YamlError;
9
10#[derive(Debug, Clone, Copy, PartialEq)]
11pub enum ErrorKind {
12    #[cfg(feature = "serde_json")]
13    Json,
14    #[cfg(feature = "serde_yaml")]
15    Yaml,
16    #[doc(hidden)]
17    __Unknown,
18}
19
20#[derive(Debug)]
21pub struct Error {
22    description: String,
23    kind: ErrorKind,
24    cause: Option<Box<StdError>>,
25}
26
27impl Error {
28    #[cfg(feature = "serde_json")]
29    pub fn json(err: JsonError) -> Self {
30        Error {
31            description: err.description().to_string(),
32            kind: ErrorKind::Json,
33            cause: Some(Box::new(err)),
34        }
35    }
36
37    #[cfg(feature = "serde_yaml")]
38    pub fn yaml(err: YamlError) -> Self {
39        Error {
40            description: err.description().to_string(),
41            kind: ErrorKind::Yaml,
42            cause: Some(Box::new(err)),
43        }
44    }
45
46    pub fn kind(&self) -> ErrorKind {
47        self.kind
48    }
49}
50
51impl StdError for Error {
52    fn description(&self) -> &str {
53        self.description.as_str()
54    }
55
56    fn cause(&self) -> Option<&StdError> {
57        match self.cause {
58            Some(ref err) => Some(err.borrow()),
59            None => None,
60        }
61    }
62}
63
64impl Display for Error {
65    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
66        self.description.fmt(f)
67    }
68}
69
70#[cfg(feature = "serde_json")]
71impl From<JsonError> for Error {
72    fn from(err: JsonError) -> Self {
73        Self::json(err)
74    }
75}
76
77#[cfg(feature = "serde_yaml")]
78impl From<YamlError> for Error {
79    fn from(err: YamlError) -> Self {
80        Self::yaml(err)
81    }
82}
serde_helpers/error.rs

serde_helpers/
error.rs
