basic_toml/
error.rs

1use std::fmt::{self, Debug, Display};
2
3/// Errors that can occur when serializing or deserializing TOML.
4pub struct Error(Box<ErrorInner>);
5
6pub(crate) enum ErrorInner {
7    Ser(crate::ser::Error),
8    De(crate::de::Error),
9}
10
11impl Error {
12    /// Produces a (line, column) pair of the position of the error if
13    /// available.
14    ///
15    /// All indexes are 0-based.
16    pub fn line_col(&self) -> Option<(usize, usize)> {
17        match &*self.0 {
18            ErrorInner::Ser(_) => None,
19            ErrorInner::De(error) => error.line_col(),
20        }
21    }
22}
23
24impl From<crate::ser::Error> for Error {
25    fn from(error: crate::ser::Error) -> Self {
26        Error(Box::new(ErrorInner::Ser(error)))
27    }
28}
29
30impl From<crate::de::Error> for Error {
31    fn from(error: crate::de::Error) -> Self {
32        Error(Box::new(ErrorInner::De(error)))
33    }
34}
35
36impl Display for Error {
37    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
38        match &*self.0 {
39            ErrorInner::Ser(error) => Display::fmt(error, formatter),
40            ErrorInner::De(error) => Display::fmt(error, formatter),
41        }
42    }
43}
44
45impl Debug for Error {
46    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
47        match &*self.0 {
48            ErrorInner::Ser(error) => Debug::fmt(error, formatter),
49            ErrorInner::De(error) => Debug::fmt(error, formatter),
50        }
51    }
52}
53
54impl std::error::Error for Error {}