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use std::error;
use std::fmt;
use std::result;
use std::io;
use std::string::FromUtf8Error;
use serde::de;
use serde::ser;
use byteorder::Error as ByteorderError;
#[derive(Debug)]
pub enum Error {
Syntax,
Io(io::Error),
FromUtf8(FromUtf8Error),
Custom(String),
Eof,
StopCode,
TrailingBytes,
#[doc(hidden)]
__Nonexhaustive,
}
impl error::Error for Error {
fn description(&self) -> &str {
match *self {
Error::Syntax => "syntax error",
Error::Io(ref error) => error::Error::description(error),
Error::FromUtf8(ref error) => error.description(),
_ => "unknown error",
}
}
fn cause(&self) -> Option<&error::Error> {
match *self {
Error::Io(ref error) => Some(error),
Error::FromUtf8(ref error) => Some(error),
_ => None,
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Syntax => f.write_str("syntax error"),
Error::Io(ref error) => fmt::Display::fmt(error, f),
Error::FromUtf8(ref error) => fmt::Display::fmt(error, f),
_ => f.write_str("unknown error"),
}
}
}
impl From<io::Error> for Error {
fn from(error: io::Error) -> Error {
Error::Io(error)
}
}
impl From<FromUtf8Error> for Error {
fn from(error: FromUtf8Error) -> Error {
Error::FromUtf8(error)
}
}
impl From<ByteorderError> for Error {
fn from(error: ByteorderError) -> Error {
match error {
ByteorderError::UnexpectedEOF => Error::Eof,
ByteorderError::Io(e) => Error::Io(e),
}
}
}
impl de::Error for Error {
fn custom<T: Into<String>>(msg: T) -> Error {
Error::Custom(msg.into())
}
fn end_of_stream() -> Error {
Error::Eof
}
}
impl ser::Error for Error {
fn custom<T: Into<String>>(msg: T) -> Error {
Error::Custom(msg.into())
}
}
pub type Result<T> = result::Result<T, Error>;