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use std::fmt;
pub type Result<T> = ::std::result::Result<T, Error>;
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub struct Error {
kind: ErrorKind,
}
impl Error {
pub fn new(kind: ErrorKind) -> Self {
Error{kind: kind}
}
pub fn kind(&self) -> ErrorKind {
self.kind
}
}
impl From<ErrorKind> for Error {
fn from(kind: ErrorKind) -> Self {
Error{kind: kind}
}
}
impl ::std::error::Error for Error {
fn description(&self) -> &str {
match self.kind {
ErrorKind::PoolOverflow => "out of space for new symbols",
ErrorKind::NoSuchSymbol => "no such symbol found",
ErrorKind::__DoNotMatchThisVariant(_) => unreachable!(),
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", <Self as ::std::error::Error>::description(self))
}
}
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum ErrorKind {
PoolOverflow,
NoSuchSymbol,
#[doc(hidden)]
__DoNotMatchThisVariant(())
}