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use trackable::error::{ErrorKind as TrackableErrorKind, ErrorKindExt};
use trackable::error::{Failure, TrackableError};
/// This crate specific `Error` type.
#[derive(Debug, Clone, TrackableError)]
pub struct Error(TrackableError<ErrorKind>);
impl From<Failure> for Error {
fn from(f: Failure) -> Self {
ErrorKind::Other.takes_over(f).into()
}
}
impl From<std::io::Error> for Error {
fn from(f: std::io::Error) -> Self {
let kind = if f.kind() == std::io::ErrorKind::UnexpectedEof {
ErrorKind::UnexpectedEos
} else {
ErrorKind::Other
};
kind.cause(f).into()
}
}
/// Possible error kinds.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum ErrorKind {
/// Input is invalid.
///
/// Usually it indicates there is a problem outside of the encoder/decoder.
InvalidInput,
/// Inconsistent state of the encoder/decoder.
///
/// Usually it indicates there is a bug in the encoder/decoder.
InconsistentState,
/// Unexpected EOS.
///
/// A target stream has reached EOS despite there are some items to be encoded/decoded.
UnexpectedEos,
/// Encoder is full.
///
/// The encoder cannot accept more items because it has some items to be encoded currently.
EncoderFull,
/// Decoder has terminated.
///
/// The decoder cannot decode any more items.
DecoderTerminated,
/// A decoding process terminated incompletely.
IncompleteDecoding,
/// Other errors.
Other,
}
impl TrackableErrorKind for ErrorKind {}