simd_csv/
error.rs

1use std::{error, fmt, io, result};
2
3/// The specific type of an error.
4#[derive(Debug)]
5pub enum ErrorKind {
6    Io(io::Error),
7    UnequalLengths {
8        expected_len: usize,
9        len: usize,
10        pos: Option<(u64, u64)>,
11    },
12    OutOfBounds {
13        pos: u64,
14        start: u64,
15        end: u64,
16    },
17}
18
19/// An error occurring when reading/writing CSV data.
20#[derive(Debug)]
21pub struct Error(ErrorKind);
22
23impl Error {
24    pub fn new(kind: ErrorKind) -> Self {
25        Self(kind)
26    }
27
28    pub fn is_io_error(&self) -> bool {
29        matches!(self.0, ErrorKind::Io(_))
30    }
31
32    pub fn kind(&self) -> &ErrorKind {
33        &self.0
34    }
35
36    pub fn into_kind(self) -> ErrorKind {
37        self.0
38    }
39}
40
41impl From<io::Error> for Error {
42    fn from(err: io::Error) -> Self {
43        Self(ErrorKind::Io(err))
44    }
45}
46
47impl From<Error> for io::Error {
48    fn from(err: Error) -> Self {
49        Self::new(io::ErrorKind::Other, err)
50    }
51}
52
53impl error::Error for Error {}
54
55impl fmt::Display for Error {
56    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
57        match self.0 {
58            ErrorKind::Io(ref err) => err.fmt(f),
59            ErrorKind::UnequalLengths {
60                expected_len,
61                len,
62                pos: Some((byte, index))
63            } => write!(
64                f,
65                "CSV error: record {} (byte: {}): found record with {} fields, but the previous record has {} fields",
66                index, byte, len, expected_len
67            ),
68             ErrorKind::UnequalLengths {
69                expected_len,
70                len,
71                pos: None
72            } => write!(
73                f,
74                "CSV error: found record with {} fields, but the previous record has {} fields",
75                len, expected_len
76            ),
77            ErrorKind::OutOfBounds { pos, start, end } => {
78                write!(f, "pos {} is out of bounds (should be >= {} and < {})", pos, start, end)
79            }
80        }
81    }
82}
83
84/// A type alias for `Result<T, simd_csv::Error>`.
85pub type Result<T> = result::Result<T, Error>;
simd_csv/error.rs

simd_csv/
error.rs
