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use std::io;
use std::error;
use std::fmt::{self, Display, Formatter};
use std::result;
use self::Error::*;
#[derive(Debug)]
pub enum Error {
IO(io::Error),
}
impl Display for Error {
fn fmt(&self, formatter: &mut Formatter) -> result::Result<(), fmt::Error> {
match *self {
IO(ref err) => err.fmt(formatter),
}
}
}
impl error::Error for Error {
fn description(&self) -> &str {
match *self {
IO(ref err) => err.description(),
}
}
fn cause(&self) -> Option<&error::Error> {
match *self {
IO(ref err) => Some(err),
}
}
}
pub type Result<T> = result::Result<T, Error>;
impl From<io::Error> for Error {
fn from(err: io::Error) -> Self {
IO(err)
}
}