use std::error::Error;
use std::fmt::{self, Display, Formatter};
use std::io::{self, ErrorKind};
use std::num::{ParseFloatError, ParseIntError};
#[derive(Debug)]
pub enum ScannerError {
IOError(io::Error),
ParseIntError(ParseIntError),
ParseFloatError(ParseFloatError),
}
impl From<io::Error> for ScannerError {
#[inline]
fn from(err: io::Error) -> ScannerError {
ScannerError::IOError(err)
}
}
impl From<ErrorKind> for ScannerError {
#[inline]
fn from(kind: ErrorKind) -> ScannerError {
ScannerError::IOError(kind.into())
}
}
impl From<ParseIntError> for ScannerError {
#[inline]
fn from(err: ParseIntError) -> ScannerError {
ScannerError::ParseIntError(err)
}
}
impl From<ParseFloatError> for ScannerError {
#[inline]
fn from(err: ParseFloatError) -> ScannerError {
ScannerError::ParseFloatError(err)
}
}
impl Display for ScannerError {
#[inline]
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), fmt::Error> {
match self {
ScannerError::IOError(err) => Display::fmt(&err, f),
ScannerError::ParseIntError(err) => Display::fmt(&err, f),
ScannerError::ParseFloatError(err) => Display::fmt(&err, f),
}
}
}
impl Error for ScannerError {}