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use std::error;
use std::fmt;
use std::result;
#[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Debug)]
pub enum Error {
InvalidCharacters,
UnsupportedFormat,
UnexpectedEndOfInput,
ParseFailed(String),
TrailingCharacters,
}
impl error::Error for Error {}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
&Error::InvalidCharacters =>
write!(f, "non-ASCII characters"),
&Error::UnsupportedFormat =>
write!(f, "not an IATA BCBP Type M boarding pass"),
&Error::UnexpectedEndOfInput =>
write!(f, "unexpected end-of-input"),
&Error::ParseFailed(ref reason) =>
write!(f, "parse failed: {}", reason),
&Error::TrailingCharacters =>
write!(f, "input includes data after a valid boarding pass"),
}
}
}
pub type Result<T> = result::Result<T, Error>;