which/
error.rs

1use std::{fmt, io};
2
3pub type Result<T> = std::result::Result<T, Error>;
4
5#[derive(Copy, Clone, Eq, PartialEq, Debug)]
6pub enum Error {
7    /// An executable binary with that name was not found
8    CannotFindBinaryPath,
9    /// There was nowhere to search and the provided name wasn't an absolute path
10    CannotGetCurrentDirAndPathListEmpty,
11    /// Failed to canonicalize the path found
12    CannotCanonicalize,
13}
14
15impl std::error::Error for Error {}
16
17impl fmt::Display for Error {
18    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
19        match self {
20            Error::CannotFindBinaryPath => write!(f, "cannot find binary path"),
21            Error::CannotGetCurrentDirAndPathListEmpty => write!(
22                f,
23                "no path to search and provided name is not an absolute path"
24            ),
25            Error::CannotCanonicalize => write!(f, "cannot canonicalize path"),
26        }
27    }
28}
29
30#[derive(Debug)]
31#[non_exhaustive]
32pub enum NonFatalError {
33    Io(io::Error),
34}
35
36impl std::error::Error for NonFatalError {}
37
38impl fmt::Display for NonFatalError {
39    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
40        match self {
41            Self::Io(e) => write!(f, "{e}"),
42        }
43    }
44}