serenity - The Serenity Operating System 🐞

Age	Commit message (Collapse)	Author
2022-08-23	LibJS: Replace GlobalObject with VM in Promise AOs [Part 8/19]	Linus Groh

2022-02-08	LibJS: Setup host hooks and have promise jobs work out the realm	Luke Wilde
	This allows the host of LibJS (notably LibWeb in this case) to override certain functions such as HostEnqueuePromiseJob, so it can do it's own thing in certain situations. Notably, LibWeb will override HostEnqueuePromiseJob to put promise jobs on the microtask queue. This also makes promise jobs use AK::Function instead of JS::NativeFunction. This removes the need to go through a JavaScript function and it more closely matches the spec's idea of "abstract closures"
2021-10-21	LibJS: Convert NativeFunction::{call,construct}() to ThrowCompletionOr	Linus Groh
	Both at the same time because many of them call construct() in call() and I'm not keen on adding a bunch of temporary plumbing to turn exceptions into throw completions. Also changes the return value of construct() to Object* instead of Value as it always needs to return an object; allowing an arbitrary Value is a massive foot gun.
2021-04-22	Everywhere: Use linusg@serenityos.org for my copyright headers	Linus Groh

2021-04-22	Everything: Move to SPDX license identifiers in all files.	Brian Gianforcaro
	SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-02	LibJS: Add initial support for Promises	Linus Groh
	Almost a year after first working on this, it's finally done: an implementation of Promises for LibJS! :^) The core functionality is working and closely following the spec [1]. I mostly took the pseudo code and transformed it into C++ - if you read and understand it, you will know how the spec implements Promises; and if you read the spec first, the code will look very familiar. Implemented functions are: - Promise() constructor - Promise.prototype.then() - Promise.prototype.catch() - Promise.prototype.finally() - Promise.resolve() - Promise.reject() For the tests I added a new function to test-js's global object, runQueuedPromiseJobs(), which calls vm.run_queued_promise_jobs(). By design, queued jobs normally only run after the script was fully executed, making it improssible to test handlers in individual test() calls by default [2]. Subsequent commits include integrations into LibWeb and js(1) - pretty-printing, running queued promise jobs when necessary. This has an unusual amount of dbgln() statements, all hidden behind the PROMISE_DEBUG flag - I'm leaving them in for now as they've been very useful while debugging this, things can get quite complex with so many asynchronously executed functions. I've not extensively explored use of these APIs for promise-based functionality in LibWeb (fetch(), Notification.requestPermission() etc.), but we'll get there in due time. [1]: https://tc39.es/ecma262/#sec-promise-objects [2]: https://tc39.es/ecma262/#sec-jobs-and-job-queues