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// Copyright 2018 the Deno authors. All rights reserved. MIT license.
use hyper;
pub use msg::ErrorKind;
use std;
use std::fmt;
use std::io;
use url;
pub type DenoResult<T> = std::result::Result<T, DenoError>;
#[derive(Debug)]
pub struct DenoError {
repr: Repr,
}
#[derive(Debug)]
enum Repr {
Simple(ErrorKind, String),
IoErr(io::Error),
UrlErr(url::ParseError),
HyperErr(hyper::Error),
}
pub fn new(kind: ErrorKind, msg: String) -> DenoError {
DenoError {
repr: Repr::Simple(kind, msg),
}
}
impl DenoError {
pub fn kind(&self) -> ErrorKind {
match self.repr {
Repr::Simple(kind, ref _msg) => kind,
// Repr::Simple(kind) => kind,
Repr::IoErr(ref err) => {
use std::io::ErrorKind::*;
match err.kind() {
NotFound => ErrorKind::NotFound,
PermissionDenied => ErrorKind::PermissionDenied,
ConnectionRefused => ErrorKind::ConnectionRefused,
ConnectionReset => ErrorKind::ConnectionReset,
ConnectionAborted => ErrorKind::ConnectionAborted,
NotConnected => ErrorKind::NotConnected,
AddrInUse => ErrorKind::AddrInUse,
AddrNotAvailable => ErrorKind::AddrNotAvailable,
BrokenPipe => ErrorKind::BrokenPipe,
AlreadyExists => ErrorKind::AlreadyExists,
WouldBlock => ErrorKind::WouldBlock,
InvalidInput => ErrorKind::InvalidInput,
InvalidData => ErrorKind::InvalidData,
TimedOut => ErrorKind::TimedOut,
Interrupted => ErrorKind::Interrupted,
WriteZero => ErrorKind::WriteZero,
Other => ErrorKind::Other,
UnexpectedEof => ErrorKind::UnexpectedEof,
_ => unreachable!(),
}
}
Repr::UrlErr(ref err) => {
use url::ParseError::*;
match err {
EmptyHost => ErrorKind::EmptyHost,
IdnaError => ErrorKind::IdnaError,
InvalidPort => ErrorKind::InvalidPort,
InvalidIpv4Address => ErrorKind::InvalidIpv4Address,
InvalidIpv6Address => ErrorKind::InvalidIpv6Address,
InvalidDomainCharacter => ErrorKind::InvalidDomainCharacter,
RelativeUrlWithoutBase => ErrorKind::RelativeUrlWithoutBase,
RelativeUrlWithCannotBeABaseBase => {
ErrorKind::RelativeUrlWithCannotBeABaseBase
}
SetHostOnCannotBeABaseUrl => ErrorKind::SetHostOnCannotBeABaseUrl,
Overflow => ErrorKind::Overflow,
}
}
Repr::HyperErr(ref err) => {
// For some reason hyper::errors::Kind is private.
if err.is_parse() {
ErrorKind::HttpParse
} else if err.is_user() {
ErrorKind::HttpUser
} else if err.is_canceled() {
ErrorKind::HttpCanceled
} else if err.is_closed() {
ErrorKind::HttpClosed
} else {
ErrorKind::HttpOther
}
}
}
}
}
impl fmt::Display for DenoError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.repr {
Repr::Simple(_kind, ref err_str) => f.pad(err_str),
Repr::IoErr(ref err) => err.fmt(f),
Repr::UrlErr(ref err) => err.fmt(f),
Repr::HyperErr(ref err) => err.fmt(f),
}
}
}
impl std::error::Error for DenoError {
fn description(&self) -> &str {
match self.repr {
Repr::Simple(_kind, ref msg) => msg.as_str(),
Repr::IoErr(ref err) => err.description(),
Repr::UrlErr(ref err) => err.description(),
Repr::HyperErr(ref err) => err.description(),
}
}
fn cause(&self) -> Option<&std::error::Error> {
match self.repr {
Repr::Simple(_kind, ref _msg) => None,
Repr::IoErr(ref err) => Some(err),
Repr::UrlErr(ref err) => Some(err),
Repr::HyperErr(ref err) => Some(err),
}
}
}
impl From<io::Error> for DenoError {
#[inline]
fn from(err: io::Error) -> DenoError {
DenoError {
repr: Repr::IoErr(err),
}
}
}
impl From<url::ParseError> for DenoError {
#[inline]
fn from(err: url::ParseError) -> DenoError {
DenoError {
repr: Repr::UrlErr(err),
}
}
}
impl From<hyper::Error> for DenoError {
#[inline]
fn from(err: hyper::Error) -> DenoError {
DenoError {
repr: Repr::HyperErr(err),
}
}
}
pub fn bad_resource() -> DenoError {
new(ErrorKind::BadResource, String::from("bad resource id"))
}
pub fn permission_denied() -> DenoError {
new(
ErrorKind::PermissionDenied,
String::from("permission denied"),
)
}
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