precis_tools/
error.rs

1use std::fmt;
2use std::path::{Path, PathBuf};
3
4/// Represents any kind of error that can occur while parsing files
5#[derive(Debug)]
6pub struct Error {
7    pub(crate) mesg: String,
8    pub(crate) line: Option<u64>,
9    pub(crate) path: Option<PathBuf>,
10}
11
12impl Error {
13    /// Create a new parse error from the given message.
14    pub(crate) fn parse(msg: String) -> Error {
15        Error {
16            mesg: msg,
17            line: None,
18            path: None,
19        }
20    }
21
22    /// Return the specific kind of this error.
23    pub fn mesg(&self) -> &str {
24        self.mesg.as_str()
25    }
26
27    /// Return the line number at which this error occurred, if available.
28    pub fn line(&self) -> Option<u64> {
29        self.line
30    }
31
32    /// Return the file path associated with this error, if one exists.
33    pub fn path(&self) -> Option<&Path> {
34        self.path.as_deref()
35    }
36}
37
38impl fmt::Display for Error {
39    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
40        if let Some(ref path) = self.path {
41            if let Some(line) = self.line {
42                write!(f, "{}, {}:{}: ", self.mesg, path.display(), line)
43            } else {
44                write!(f, "{}, {}", self.mesg, path.display())
45            }
46        } else if let Some(line) = self.line {
47            write!(f, "{}, line {}", self.mesg, line)
48        } else {
49            write!(f, "{}", self.mesg)
50        }
51    }
52}
53
54impl From<ucd_parse::Error> for Error {
55    fn from(error: ucd_parse::Error) -> Self {
56        Error {
57            mesg: format!("Parse error: {}", error),
58            line: error.line(),
59            path: None,
60        }
61    }
62}
63
64impl From<&str> for Error {
65    fn from(msg: &str) -> Self {
66        Error::parse(msg.to_string())
67    }
68}
69
70impl From<std::io::Error> for Error {
71    fn from(error: std::io::Error) -> Self {
72        Error {
73            mesg: format!("IO Error: {}", error),
74            line: None,
75            path: None,
76        }
77    }
78}
precis_tools/error.rs

precis_tools/
error.rs
