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#![allow(dead_code)]
use core::fmt::{self, Display};
use std::io;
use thiserror::Error;
macro_rules! unimplemented_display {
($ty:ty) => {
impl Display for $ty {
fn fmt(&self, _formatter: &mut fmt::Formatter) -> fmt::Result {
unimplemented!()
}
}
};
}
#[derive(Error, Debug)]
struct BracedError {
msg: String,
pos: usize,
}
#[derive(Error, Debug)]
struct TupleError(String, usize);
#[derive(Error, Debug)]
struct UnitError;
#[derive(Error, Debug)]
struct WithSource {
#[source]
cause: io::Error,
}
#[derive(Error, Debug)]
struct WithAnyhow {
#[source]
cause: anyhow::Error,
}
#[derive(Error, Debug)]
enum EnumError {
Braced {
#[source]
cause: io::Error,
},
Tuple(#[source] io::Error),
Unit,
}
unimplemented_display!(BracedError);
unimplemented_display!(TupleError);
unimplemented_display!(UnitError);
unimplemented_display!(WithSource);
unimplemented_display!(WithAnyhow);
unimplemented_display!(EnumError);
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