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/* 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::{error, fmt, result, str::Utf8Error, string::FromUtf16Error};
use golden_gate::Error as GoldenGateError;
use nserror::{
nsresult, NS_ERROR_ALREADY_INITIALIZED, NS_ERROR_CANNOT_CONVERT_DATA,
NS_ERROR_DOM_QUOTA_EXCEEDED_ERR, NS_ERROR_FAILURE, NS_ERROR_INVALID_ARG,
NS_ERROR_NOT_IMPLEMENTED, NS_ERROR_NOT_INITIALIZED, NS_ERROR_UNEXPECTED,
};
use serde_json::error::Error as JsonError;
use webext_storage::error::Error as WebextStorageError;
use webext_storage::error::ErrorKind as WebextStorageErrorKind;
/// A specialized `Result` type for extension storage operations.
pub type Result<T> = result::Result<T, Error>;
/// The error type for extension storage operations. Errors can be converted
/// into `nsresult` codes, and include more detailed messages that can be passed
/// to callbacks.
#[derive(Debug)]
pub enum Error {
Nsresult(nsresult),
WebextStorage(WebextStorageError),
MigrationFailed(WebextStorageError),
GoldenGate(GoldenGateError),
MalformedString(Box<dyn error::Error + Send + Sync + 'static>),
AlreadyConfigured,
NotConfigured,
AlreadyRan(&'static str),
DidNotRun(&'static str),
AlreadyTornDown,
NotImplemented,
}
impl error::Error for Error {
fn source(&self) -> Option<&(dyn error::Error + 'static)> {
match self {
Error::MalformedString(error) => Some(error.as_ref()),
_ => None,
}
}
}
impl From<nsresult> for Error {
fn from(result: nsresult) -> Error {
Error::Nsresult(result)
}
}
impl From<WebextStorageError> for Error {
fn from(error: WebextStorageError) -> Error {
Error::WebextStorage(error)
}
}
impl From<GoldenGateError> for Error {
fn from(error: GoldenGateError) -> Error {
Error::GoldenGate(error)
}
}
impl From<Utf8Error> for Error {
fn from(error: Utf8Error) -> Error {
Error::MalformedString(error.into())
}
}
impl From<FromUtf16Error> for Error {
fn from(error: FromUtf16Error) -> Error {
Error::MalformedString(error.into())
}
}
impl From<JsonError> for Error {
fn from(error: JsonError) -> Error {
Error::MalformedString(error.into())
}
}
impl From<Error> for nsresult {
fn from(error: Error) -> nsresult {
match error {
Error::Nsresult(result) => result,
Error::WebextStorage(e) => match e.kind() {
WebextStorageErrorKind::QuotaError(_) => NS_ERROR_DOM_QUOTA_EXCEEDED_ERR,
_ => NS_ERROR_FAILURE,
},
Error::MigrationFailed(_) => NS_ERROR_CANNOT_CONVERT_DATA,
Error::GoldenGate(error) => error.into(),
Error::MalformedString(_) => NS_ERROR_INVALID_ARG,
Error::AlreadyConfigured => NS_ERROR_ALREADY_INITIALIZED,
Error::NotConfigured => NS_ERROR_NOT_INITIALIZED,
Error::AlreadyRan(_) => NS_ERROR_UNEXPECTED,
Error::DidNotRun(_) => NS_ERROR_UNEXPECTED,
Error::AlreadyTornDown => NS_ERROR_UNEXPECTED,
Error::NotImplemented => NS_ERROR_NOT_IMPLEMENTED,
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Error::Nsresult(result) => write!(f, "Operation failed with {result}"),
Error::WebextStorage(error) => error.fmt(f),
Error::MigrationFailed(error) => write!(f, "Migration failed with {error}"),
Error::GoldenGate(error) => error.fmt(f),
Error::MalformedString(error) => error.fmt(f),
Error::AlreadyConfigured => write!(f, "The storage area is already configured"),
Error::NotConfigured => write!(
f,
"The storage area must be configured by calling `configure` first"
),
Error::AlreadyRan(what) => write!(f, "`{what}` already ran on the background thread"),
Error::DidNotRun(what) => write!(f, "`{what}` didn't run on the background thread"),
Error::AlreadyTornDown => {
write!(f, "Can't use a storage area that's already torn down")
}
Error::NotImplemented => write!(f, "Operation not implemented"),
}
}
}
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