doge/
error.rs

1use serde;
2use std;
3
4pub type Result<T> = std::result::Result<T, Error>;
5
6#[derive(Debug)]
7pub enum Error {
8    IO(std::io::Error),
9    Message(String),
10    TrailingChars,
11    Eof,
12    IncorrectType(&'static str, char),
13    NumberSyntax,
14}
15
16impl serde::ser::Error for Error {
17    fn custom<T: std::fmt::Display>(msg: T) -> Self {
18        Error::Message(msg.to_string())
19    }
20}
21
22impl serde::de::Error for Error {
23    fn custom<T: std::fmt::Display>(msg: T) -> Self {
24        Error::Message(msg.to_string())
25    }
26}
27
28impl std::fmt::Display for Error {
29    fn fmt(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
30        formatter.write_str(std::error::Error::description(self))
31    }
32}
33
34impl std::error::Error for Error {
35    fn description(&self) -> &str {
36        match *self {
37            Error::IO(ref err) => err.description(),
38            Error::Message(ref msg) => msg,
39            Error::TrailingChars => "trailing characters",
40            Error::Eof => "unexpected end of input",
41            Error::IncorrectType(ref _expected, ref _found) => "incorrect type found", // TODO somehow include the parameters
42            Error::NumberSyntax => "failed to parse number",
43        }
44    }
45}
46
47impl From<std::io::Error> for Error {
48    fn from(e: std::io::Error) -> Error {
49        Error::IO(e)
50    }
51}
doge/error.rs

doge/
error.rs
