gecko-dev/remote/error.rs

74 строки
2.1 KiB
Rust

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
use std::num;
use failure::Fail;
use http;
use nserror::{
nsresult, NS_ERROR_ILLEGAL_VALUE, NS_ERROR_INVALID_ARG, NS_ERROR_LAUNCHED_CHILD_PROCESS,
NS_ERROR_NOT_AVAILABLE,
};
#[derive(Debug, Fail)]
pub enum RemoteAgentError {
#[fail(display = "expected address syntax [<host>]:<port>: {}", _0)]
AddressSpec(http::uri::InvalidUri),
#[fail(display = "may only be instantiated in parent process")]
ChildProcess,
#[fail(display = "invalid port: {}", _0)]
InvalidPort(num::ParseIntError),
#[fail(display = "listener restricted to loopback devices")]
LoopbackRestricted,
#[fail(display = "missing port number")]
MissingPort,
#[fail(display = "unavailable")]
Unavailable,
#[fail(display = "error result {}", _0)]
XpCom(nsresult),
}
impl From<RemoteAgentError> for nsresult {
fn from(err: RemoteAgentError) -> nsresult {
use RemoteAgentError::*;
match err {
AddressSpec(_) | InvalidPort(_) => NS_ERROR_INVALID_ARG,
ChildProcess => NS_ERROR_LAUNCHED_CHILD_PROCESS,
LoopbackRestricted => NS_ERROR_ILLEGAL_VALUE,
MissingPort => NS_ERROR_INVALID_ARG,
Unavailable => NS_ERROR_NOT_AVAILABLE,
XpCom(result) => result,
}
}
}
impl From<num::ParseIntError> for RemoteAgentError {
fn from(err: num::ParseIntError) -> Self {
RemoteAgentError::InvalidPort(err)
}
}
impl From<http::uri::InvalidUri> for RemoteAgentError {
fn from(err: http::uri::InvalidUri) -> Self {
RemoteAgentError::AddressSpec(err)
}
}
impl From<nsresult> for RemoteAgentError {
fn from(result: nsresult) -> Self {
use RemoteAgentError::*;
match result {
NS_ERROR_NOT_AVAILABLE => Unavailable,
NS_ERROR_LAUNCHED_CHILD_PROCESS => ChildProcess,
x => RemoteAgentError::XpCom(x),
}
}
}