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use std::error;
use std::fmt;
use std::io;
use std::time;
#[derive(Debug)]
pub enum IdError {
Io(io::Error),
Time(time::SystemTimeError),
}
impl From<io::Error> for IdError {
fn from(err: io::Error) -> IdError {
IdError::Io(err)
}
}
impl From<time::SystemTimeError> for IdError {
fn from(err: time::SystemTimeError) -> IdError {
IdError::Time(err)
}
}
impl error::Error for IdError {
fn cause(&self) -> Option<&error::Error> {
match *self {
IdError::Io(ref err) => Some(err),
IdError::Time(ref err) => Some(err),
}
}
fn description(&self) -> &str {
match *self {
IdError::Io(ref err) => err.description(),
IdError::Time(ref err) => err.description(),
}
}
}
impl fmt::Display for IdError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
IdError::Io(ref err) => err.fmt(f),
IdError::Time(ref err) => err.fmt(f),
}
}
}