Files
nym/common/wasm/utils/src/error.rs
T
Jędrzej Stuczyński 4890c528bc feat: mixFetch - the final countdown (#3737)
* mixFetch

* clippy

* removed redundant Arc over 'WasmStorage' in the 'ClientStorage'

---------

Co-authored-by: Fouad <fmtabbara@hotmail.co.uk>
2023-09-07 12:45:03 +01:00

108 lines
2.7 KiB
Rust

// Copyright 2023 - Nym Technologies SA <contact@nymtech.net>
// SPDX-License-Identifier: Apache-2.0
use js_sys::Promise;
use wasm_bindgen::JsValue;
#[macro_export]
macro_rules! wasm_error {
($struct:ident) => {
impl $struct {
pub fn into_rejected_promise(self) -> js_sys::Promise {
self.into()
}
}
impl From<$struct> for wasm_bindgen::JsValue {
fn from(value: $struct) -> Self {
$crate::error::simple_js_error(value.to_string())
}
}
impl From<$struct> for js_sys::Promise {
fn from(value: $struct) -> Self {
Promise::reject(&value.into())
}
}
};
}
/// A helper that constructs a `Promise` containing a wrapper JS error.
pub fn simple_rejected_promise<S: AsRef<str>>(err_message: S) -> Promise {
let err = simple_js_error(err_message);
Promise::reject(&err)
}
/// A helper that construct a `JsValue` containing an error with the provided message.
pub fn simple_js_error<S: AsRef<str>>(message: S) -> JsValue {
let js_error = js_sys::Error::new(message.as_ref());
JsValue::from(js_error)
}
#[macro_export]
macro_rules! js_error {
($($t:tt)*) => {{
let js_error = js_sys::Error::new(&format!($($t)*));
wasm_bindgen::JsValue::from(js_error)
}}
}
/// Maps provided `Result`'s inner values into a pair of `JsValue` that can be returned
/// inside a promise (and in particular from inside `future_to_promise`)
pub fn into_promise_result<T, E>(res: Result<T, E>) -> Result<JsValue, JsValue>
where
T: Into<JsValue>,
E: Into<JsValue>,
{
res.map(Into::into).map_err(Into::into)
}
pub fn map_promise_err<T, E>(res: Result<T, E>) -> Result<T, JsValue>
where
E: Into<JsValue>,
{
res.map_err(Into::into)
}
pub trait PromisableResult {
fn into_promise_result(self) -> Result<JsValue, JsValue>;
}
// this should probably get renamed : )
pub trait PromisableResultError {
type Ok;
fn map_promise_err(self) -> Result<Self::Ok, JsValue>;
}
impl<T, E> PromisableResult for Result<T, E>
where
T: Into<JsValue>,
E: Into<JsValue>,
{
fn into_promise_result(self) -> Result<JsValue, JsValue> {
into_promise_result(self)
}
}
impl<T, E> PromisableResultError for Result<T, E>
where
E: Into<JsValue>,
{
type Ok = T;
fn map_promise_err(self) -> Result<T, JsValue> {
map_promise_err(self)
}
}
#[macro_export]
macro_rules! check_promise_result {
( $x:expr ) => {
match $crate::error::PromisableResultError::map_promise_err($x) {
Ok(r) => r,
Err(err) => return js_sys::Promise::reject(&err),
}
};
}