criterion/
error.rs

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1#[cfg(feature = "csv_output")]
2use csv::Error as CsvError;
3use serde_json::Error as SerdeError;
4use std::error::Error as StdError;
5use std::fmt;
6use std::io;
7use std::path::PathBuf;
8
9#[allow(clippy::enum_variant_names)]
10#[derive(Debug)]
11pub enum Error {
12    AccessError {
13        path: PathBuf,
14        inner: io::Error,
15    },
16    CopyError {
17        from: PathBuf,
18        to: PathBuf,
19        inner: io::Error,
20    },
21    SerdeError {
22        path: PathBuf,
23        inner: SerdeError,
24    },
25    #[cfg(feature = "csv_output")]
26    /// This API requires the following crate features to be activated: csv_output
27    CsvError(CsvError),
28}
29impl fmt::Display for Error {
30    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
31        match self {
32            Error::AccessError { path, inner } => {
33                write!(f, "Failed to access file {:?}: {}", path, inner)
34            }
35            Error::CopyError { from, to, inner } => {
36                write!(f, "Failed to copy file {:?} to {:?}: {}", from, to, inner)
37            }
38            Error::SerdeError { path, inner } => write!(
39                f,
40                "Failed to read or write file {:?} due to serialization error: {}",
41                path, inner
42            ),
43            #[cfg(feature = "csv_output")]
44            Error::CsvError(inner) => write!(f, "CSV error: {}", inner),
45        }
46    }
47}
48impl StdError for Error {
49    fn description(&self) -> &str {
50        match self {
51            Error::AccessError { .. } => "AccessError",
52            Error::CopyError { .. } => "CopyError",
53            Error::SerdeError { .. } => "SerdeError",
54            #[cfg(feature = "csv_output")]
55            Error::CsvError(_) => "CsvError",
56        }
57    }
58
59    fn cause(&self) -> Option<&dyn StdError> {
60        match self {
61            Error::AccessError { inner, .. } => Some(inner),
62            Error::CopyError { inner, .. } => Some(inner),
63            Error::SerdeError { inner, .. } => Some(inner),
64            #[cfg(feature = "csv_output")]
65            Error::CsvError(inner) => Some(inner),
66        }
67    }
68}
69
70#[cfg(feature = "csv_output")]
71impl From<CsvError> for Error {
72    fn from(other: CsvError) -> Error {
73        Error::CsvError(other)
74    }
75}
76
77pub type Result<T> = ::std::result::Result<T, Error>;
78
79pub(crate) fn log_error(e: &Error) {
80    error!("error: {}", e);
81}
criterion/error.rs

criterion/
error.rs
