Enum ErrorKind 

pub enum ErrorKind<E, B> {
    Std {
        source: E,
        backtrace: B,
    },
    Err2 {
        source: E,
    },
}

Represents the kind of error after downcasting BoxedError2.

Used to distinguish between standard library errors and Error2 errors when downcasting type-erased errors.

Variants

• Std: Error from std::error::Error (has its own backtrace)
• Err2: Error implementing Error2 (reuses parent backtrace)

Example

use std::io;

use error2::{kind::ErrorKind, prelude::*};

let err = std::io::Error::from(std::io::ErrorKind::NotFound);
let boxed = BoxedError2::from_std(err);

// Downcast to get the ErrorKind
match boxed.downcast_ref::<io::Error>() {
    Some(ErrorKind::Std { source, backtrace }) => {
        println!("Std error: {}", source);
    }
    Some(ErrorKind::Err2 { source }) => {
        println!("Error2: {}", source);
    }
    None => {}
}

Variants

Std

Standard library error with its own backtrace.

Fields

source: E

The underlying error.

backtrace: B

The error’s backtrace.

Err2

Error2 error that reuses the parent’s backtrace.

Fields

source: E

The underlying Error2 instance.