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use std::error::Error as StdError;
use std::fmt;
use std::io;
use std::result::Result as StdResult;
use serde_xml;
pub type Result<T> = StdResult<T, Error>;
#[derive(Debug)]
pub enum Error {
HttpRequest(HttpRequestError),
Io(io::Error),
Xml(serde_xml::Error),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::HttpRequest(ref e) => e.fmt(f),
Error::Io(ref e) => e.fmt(f),
Error::Xml(ref e) => e.fmt(f),
}
}
}
impl StdError for Error {
fn description(&self) -> &str {
match *self {
Error::HttpRequest(ref e) => e.description(),
Error::Io(ref e) => e.description(),
Error::Xml(ref e) => e.description(),
}
}
fn cause(&self) -> Option<&StdError> {
match *self {
Error::HttpRequest(ref e) => e.cause(),
Error::Io(ref e) => e.cause(),
Error::Xml(ref e) => e.cause(),
}
}
}
impl From<HttpRequestError> for Error {
fn from(error: HttpRequestError) -> Error {
Error::HttpRequest(error)
}
}
impl From<io::Error> for Error {
fn from(error: io::Error) -> Error {
Error::Io(error)
}
}
impl From<serde_xml::Error> for Error {
fn from(error: serde_xml::Error) -> Error {
Error::Xml(error)
}
}
impl PartialEq<Error> for Error {
fn eq(&self, other: &Error) -> bool {
use self::Error::*;
match (self, other) {
(&HttpRequest(_), &HttpRequest(_)) |
(&Io(_), &Io(_)) |
(&Xml(_), &Xml(_)) => true,
_ => false,
}
}
}
pub type HttpRequestResult<T> = StdResult<T, HttpRequestError>;
#[derive(Debug)]
pub enum HttpRequestError {
Io(io::Error),
Other(Box<StdError>),
}
impl fmt::Display for HttpRequestError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
HttpRequestError::Io(ref e) => e.fmt(f),
HttpRequestError::Other(ref e) => e.fmt(f),
}
}
}
impl StdError for HttpRequestError {
fn description(&self) -> &str {
match *self {
HttpRequestError::Io(ref e) => e.description(),
HttpRequestError::Other(ref e) => e.description(),
}
}
fn cause(&self) -> Option<&StdError> {
match *self {
HttpRequestError::Io(ref e) => e.cause(),
HttpRequestError::Other(ref e) => e.cause(),
}
}
}
impl From<io::Error> for HttpRequestError {
fn from(error: io::Error) -> HttpRequestError {
HttpRequestError::Io(error)
}
}