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use std::error;
use std::fmt;
#[derive(Clone, Copy, Debug)]
pub struct Error {
kind: ErrorKind,
}
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
pub enum ErrorKind {
NoSpace,
}
impl ErrorKind {
fn as_str(self) -> &'static str {
match self {
ErrorKind::NoSpace => "no space",
}
}
}
impl From<ErrorKind> for Error {
fn from(kind: ErrorKind) -> Error {
Error { kind }
}
}
impl fmt::Display for Error {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{}", self.kind.as_str())
}
}
impl error::Error for Error {
fn description(&self) -> &str {
self.kind.as_str()
}
fn cause(&self) -> Option<&dyn error::Error> {
None
}
}