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use lib::fmt;
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum ErrorKind {
Overflow,
InvalidDigit(usize),
}
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub struct Error(ErrorKind);
impl From<ErrorKind> for Error {
#[inline]
fn from(kind: ErrorKind) -> Self {
Error(kind)
}
}
impl Error {
#[inline]
pub fn kind(&self) -> &ErrorKind {
&self.0
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.kind() {
ErrorKind::Overflow => write!(f, "lexical error: integer overflow occurred during integer parsing."),
ErrorKind::InvalidDigit(u) => write!(f, "lexical error: invalid digit found at {}.", u),
}
}
}
#[inline]
pub(crate) fn overflow() -> Error {
ErrorKind::Overflow.into()
}
#[inline]
pub(crate) fn invalid_digit(position: usize) -> Error {
ErrorKind::InvalidDigit(position).into()
}