use core::error;
use core::fmt;
#[derive(Debug, Eq, PartialEq)]
pub enum Error {
Parameter(&'static str),
}
impl error::Error for Error {}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Parameter(err) => f.write_str(err),
}
}
}