wombo/
error.rs

1
2use std::error::Error;
3use std::io::Error as IoError;
4
5use futures::Canceled;
6use futures::sync::mpsc::SendError;
7
8use std::fmt;
9
10#[derive(Clone, Debug, Eq, PartialEq)]
11pub enum WomboErrorKind {
12  /// An error sending a message over an mpsc sender.
13  SendError,
14  /// See `futures::Canceled`.
15  Canceled,
16  /// An error indicating the Wombo instance is not initialized.
17  NotInitialized,
18  /// An unknown error.
19  Unknown
20}
21
22impl WomboErrorKind {
23
24  pub fn to_string(&self) -> &'static str {
25    match *self {
26      WomboErrorKind::Canceled       => "Canceled",
27      WomboErrorKind::Unknown        => "Unknown",
28      WomboErrorKind::SendError      => "Send Error",
29      WomboErrorKind::NotInitialized => "Not Initialized"
30    }
31  }
32
33}
34
35/// A `Wombo` error.
36#[derive(Clone, Debug, Eq, PartialEq)]
37pub struct WomboError {
38  kind: WomboErrorKind,
39  details: String
40}
41
42impl WomboError {
43
44  pub fn new<S: Into<String>>(kind: WomboErrorKind, details: S) -> WomboError {
45    WomboError { kind, details: details.into() }
46  }
47
48  pub fn to_string(&self) -> String {
49    format!("{}: {}", self.kind.to_string(), self.details)
50  }
51
52  pub fn new_canceled() -> WomboError {
53    WomboError {
54      kind: WomboErrorKind::Canceled,
55      details: String::new()
56    }
57  }
58
59  pub fn new_not_initialized() -> WomboError {
60    WomboError {
61      kind: WomboErrorKind::NotInitialized,
62      details: String::new()
63    }
64  }
65
66  pub fn kind(&self) -> &WomboErrorKind {
67    &self.kind
68  }
69
70}
71
72impl fmt::Display for WomboError {
73
74  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
75    write!(f, "{}: {}", self.kind.to_string(), self.details)
76  }
77
78}
79
80impl Error for WomboError {
81
82  fn description(&self) -> &str {
83    &self.details
84  }
85
86}
87
88impl From<()> for WomboError {
89  fn from(_: ()) -> Self {
90    WomboError::new(WomboErrorKind::Unknown, "Empty error.")
91  }
92}
93
94impl From<Canceled> for WomboError {
95  fn from(e: Canceled) -> Self {
96    WomboError::new(WomboErrorKind::Canceled, format!("{}", e))
97  }
98}
99
100impl<T: Into<WomboError>> From<SendError<T>> for WomboError {
101  fn from(e: SendError<T>) -> Self {
102    WomboError::new(WomboErrorKind::SendError, format!("{}", e))
103  }
104}
105
106impl From<IoError> for WomboError {
107  fn from(e: IoError) -> Self {
108    WomboError::new(WomboErrorKind::Unknown, format!("{}", e))
109  }
110}
wombo/error.rs

wombo/
error.rs
