Files
rojo/src/error.rs
2020-03-13 20:24:14 -07:00

19 lines
520 B
Rust

use std::{error::Error, fmt};
/// Wrapper type to print errors with source-chasing.
pub struct ErrorDisplay<E>(pub E);
impl<E: Error> fmt::Display for ErrorDisplay<E> {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
writeln!(formatter, "{}", self.0)?;
let mut current_err: &dyn Error = &self.0;
while let Some(source) = current_err.source() {
writeln!(formatter, " caused by {}", source)?;
current_err = &*source;
}
Ok(())
}
}