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use std::error;
use std::fmt;
use std::io;
#[derive(Debug)]
pub enum Error {
Io(io::Error),
Ares(c_ares::Error),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Io(ref err) => err.fmt(f),
Error::Ares(ref err) => err.fmt(f),
}
}
}
impl error::Error for Error {
fn source(&self) -> Option<&(dyn error::Error + 'static)> {
match *self {
Error::Io(ref err) => Some(err),
Error::Ares(ref err) => Some(err),
}
}
}
impl From<io::Error> for Error {
fn from(err: io::Error) -> Error {
Error::Io(err)
}
}
impl From<c_ares::Error> for Error {
fn from(err: c_ares::Error) -> Error {
Error::Ares(err)
}
}