eyre 0.1.0

A catch all dyn error type that integrates with tracing-error and allows insertion of custom context as notes or warnings
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64

use crate::{BoxError, ErrReport};
use eyre_impl::Indented;
use std::{backtrace::BacktraceStatus, fmt, fmt::Write as _};

impl fmt::Debug for ErrReport {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        let error = &self.0.error;

        if f.alternate() {
            return fmt::Debug::fmt(error, f);
        }

        let errors = self.0.chain().rev().enumerate();

        writeln!(f)?;

        for (n, error) in errors {
            write!(Indented::numbered(f, n), "{}", error)?;
            writeln!(f)?;
        }

        if !self.0.context.context.is_empty() {
            write!(f, "\nInfo:")?;
            for (n, context) in self.0.context.context.iter().enumerate() {
                writeln!(f)?;
                write!(Indented::numbered(f, n), "{}", context)?;
            }
        }

        // write!(f, "\n\n{}", self.0.context.span_backtrace)?;

        let backtrace = &self.0.context.backtrace;
        if let BacktraceStatus::Captured = backtrace.status() {
            write!(f, "\n\n{}", backtrace)?;
        }

        Ok(())
    }
}

impl fmt::Display for ErrReport {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}", self.0.error)?;

        if f.alternate() {
            for cause in self.0.chain().skip(1) {
                write!(f, ": {}", cause)?;
            }
        }

        Ok(())
    }
}

impl<E> From<E> for ErrReport
where
    E: std::error::Error + Send + Sync + 'static,
{
    fn from(err: E) -> Self {
        ErrReport(Box::new(eyre_impl::ErrorReporter::from(BoxError(
            Box::new(err),
        ))))
    }
}