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use std::error::Error;
use std::io::Error as IoError;
use futures::Canceled;
use futures::sync::mpsc::SendError;
use std::fmt;
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum WomboErrorKind {
SendError,
Canceled,
NotInitialized,
Unknown
}
impl WomboErrorKind {
pub fn to_string(&self) -> &'static str {
match *self {
WomboErrorKind::Canceled => "Canceled",
WomboErrorKind::Unknown => "Unknown",
WomboErrorKind::SendError => "Send Error",
WomboErrorKind::NotInitialized => "Not Initialized"
}
}
}
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct WomboError {
kind: WomboErrorKind,
details: String
}
impl WomboError {
pub fn new<S: Into<String>>(kind: WomboErrorKind, details: S) -> WomboError {
WomboError { kind, details: details.into() }
}
pub fn to_string(&self) -> String {
format!("{}: {}", self.kind.to_string(), self.details)
}
pub fn new_canceled() -> WomboError {
WomboError {
kind: WomboErrorKind::Canceled,
details: String::new()
}
}
pub fn new_not_initialized() -> WomboError {
WomboError {
kind: WomboErrorKind::NotInitialized,
details: String::new()
}
}
pub fn kind(&self) -> &WomboErrorKind {
&self.kind
}
}
impl fmt::Display for WomboError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}: {}", self.kind.to_string(), self.details)
}
}
impl Error for WomboError {
fn description(&self) -> &str {
&self.details
}
}
impl From<()> for WomboError {
fn from(_: ()) -> Self {
WomboError::new(WomboErrorKind::Unknown, "Empty error.")
}
}
impl From<Canceled> for WomboError {
fn from(e: Canceled) -> Self {
WomboError::new(WomboErrorKind::Canceled, format!("{}", e))
}
}
impl<T: Into<WomboError>> From<SendError<T>> for WomboError {
fn from(e: SendError<T>) -> Self {
WomboError::new(WomboErrorKind::SendError, format!("{}", e))
}
}
impl From<IoError> for WomboError {
fn from(e: IoError) -> Self {
WomboError::new(WomboErrorKind::Unknown, format!("{}", e))
}
}