This allows `thread_local` contexts to have owned `HostHooks` and `JobQueues`.
It changes the following:
- Creates a new `MaybeShared` struct that can hold either a reference or an `Rc`.
- Changes the `job_queue` and `host_hooks` parameters of `Context` to use `MaybeShared`.
This PR also allows us to make `SimpleJobQueue` the default promise runner, which I think it's pretty cool :)
cc @lastmjs
This Pull Request fixes#2317 and #1835, finally giving our engine proper realms 🥳.
It changes the following:
- Extracts the compile environment stack from `Realm` and into `Vm`.
- Adjusts the bytecompiler to accommodate this change.
- Adjusts `call/construct_internal` to accommodate this change. This also coincidentally fixed#2317, which I'm pretty happy about.
- Adjusts several APIs (`NativeJob`, `Realm`) and builtins (`eval`, initializers) to accommodate this change.
- Adjusts `JsNativeError`s to hold a reference to the Realm from which they were created. This only affects errors created within calls to function objects. Native calls don't need to set the realm because it's inherited by the next outer active function object. TLDR: `JsError` API stays the same, we just set the origin Realm of errors in `JsObject::call/construct_internal`.
This Pull Request fixes test [`assert-throws-same-realm.js`](eb44f67274/test/harness/assert-throws-same-realm.js).
It changes the following:
- Handles global variables through the global object, instead of the `context`.
- Adds an `active_function` field to the vm, which is used as the `NewTarget` when certain builtins aren't called with `new`.
- Adds a `realm_intrinsics` field to `Function`.
This Pull Request closes#1975. It's still a work in progress, but tries to go in that direction.
It changes the following:
- Adds a new `TryFromJs` trait, that can be derived using a new `boa_derive` crate.
- Adds a new `try_js_into()` function that, similarly to the standard library `TryInto` trait
Things to think about:
- Should the `boa_derive` crate be re-exported in `boa_engine` using a `derive` feature, similar to how it's done in `serde`?
- The current implementation only converts perfectly valid values. So, if we try to convert a big integer into an `i8`, or any floating point number to an `f32`. So, you cannot derive `TryFromJs` for structures that contain an `f32` for example (you can still manually implement the trait, though, and decide in favour of a loss of precision). Should we also provide some traits for transparent loss of precision?
- Currently, you cannot convert between types, so if the JS struct has an integer, you cannot cast it to a boolean, for example. Should we provide a `TryConvertJs` trait, for example to force conversions?
- Currently we only have basic types and object conversions. Should add `Array` to `Vec` conversion, for example, right? Should we also add `TypedArray` conversions? What about `Map` and `Set`? Does this step over the fine grained APIs that we were creating?
Note that this still requires a bunch of documentation, tests, and validation from the dev team and from the users that requested this feature. I'm particularly interested in @lastmjs's thoughts on this API.
I already added an usage example in `boa_examples/src/bin/derive.rs`.
Co-authored-by: jedel1043 <jedel0124@gmail.com>
~~Builds off of #2529.~~ Merged.
This Pull Request allows passing any function returning `impl Future<Output = JsResult<JsValue>>` to the `NativeFunction` constructor, allowing native concurrency hooks into the engine.
It changes the following:
- Adds a `NativeFunction::from_async_fn` function.
- Adds a new `JobQueue::enqueue_future_job` method.
- Adds an example usage on `boa_examples`.
I'm creating this draft PR, since I wanted to have some early feedback, and because I though I would have time to finish it last week, but I got caught up with other stuff. Feel free to contribute :)
The main thing here is that I have divided `eval()`, `parse()` and similar functions so that they can decide if they are parsing scripts or modules. Let me know your thoughts.
Then, I was checking the import & export parsing, and I noticed we are using `TokenKind::Identifier` for `IdentifierName`, so I changed that name. An `Identifier` is an `IdentifierName` that isn't a `ReservedWord`. This means we should probably also adapt all `IdentifierReference`, `BindingIdentifier` and so on parsing. I already created an `Identifier` parser.
Something interesting there is that `await` is not a valid `Identifier` if the goal symbol is `Module`, as you can see in the [spec](https://tc39.es/ecma262/#prod-LabelIdentifier), but currently we don't have that information in the `InputElement` enumeration, we only have `Div`, `RegExp` and `TemplateTail`. How could we approach this?
Co-authored-by: jedel1043 <jedel0124@gmail.com>
Small (ish?) step towards having proper realm records
This PR changes the following:
- Moves `Intrinsics` to `Realm`.
- Cleans up the initialization logic of our intrinsics to not depend on `Context`, unblocking things like #2314.
- Adds hooks to initialize the global object and the global this per the corresponding [`InitializeHostDefinedRealm ( )`](https://tc39.es/ecma262/#sec-initializehostdefinedrealm) hook. Though, this is currently broken because the vm uses `GlobalPropertyMap` instead of the `JsObject` API to initialize global properties.
Slightly related to #2411 since we need an API to pass module files, but more useful for #1760, #1313 and other error reporting issues.
It changes the following:
- Introduces a new `Source` API to store the path of a provided file or `None` if the source is a plain string.
- Improves the display of `boa_tester` to show the path of the tests being run. This also enables hyperlinks to directly jump to the tested file from the VS terminal.
- Adjusts the repo to this change.
Hopefully, this will improve our error display in the future.
This PR changes the following:
- Modifies `EphemeronBox` to be more akin to `GcBox`, with its own header, roots and markers. This also makes it more similar to [Racket's](https://docs.racket-lang.org/reference/ephemerons.html) implementation.
- Removes `EPHEMERON_QUEUE`.
- Ephemerons are now tracked on a special `weak_start` linked list, instead of `strong_start` which is where all other GC boxes live.
- Documents all unsafe blocks.
- Documents our current garbage collection algorithm. I hope this'll clarify a bit what exactly are we doing on every garbage collection.
- Renames/removes some functions.
This PR is a complete redesign of our current native functions and closures API.
I was a bit dissatisfied with our previous design (even though I created it 😆), because it had a lot of superfluous traits, a forced usage of `Gc<GcCell<T>>` and an overly restrictive `NativeObject` bound. This redesign, on the other hand, simplifies a lot our public API, with a simple `NativeCallable` struct that has several constructors for each type of required native function.
This new design doesn't require wrapping every capture type with `Gc<GcCell<T>>`, relaxes the trait requirement to `Trace + 'static` for captures, can be reused in both `JsObject` functions and (soonish) host defined functions, and is (in my opinion) a bit cleaner than the previous iteration. It also offers an `unsafe` API as an escape hatch for users that want to pass non-Copy closures which don't capture traceable types.
Would ask for bikeshedding about the names though, because I don't know if `NativeCallable` is the most precise name for this. Same about the constructor names; I added the `from` prefix to all of them because it's the "standard" practice, but seeing the API doesn't have any other method aside from `call`, it may be better to just remove the prefix altogether.
Let me know what you think :)
Just a general cleanup of the APIs of our `Context`.
- Reordered the `pub` and `pub(crate)/fn` methods to have a clear separation between our public and private APIs.
- Removed the call method and added it to `JsValue` instead, which semantically makes a bit more sense.
- Removed the `construct_object` method, and added an utility method `new` to `JsObject` instead.
- Rewrote some patterns I found while rewriting the calls of the removed function.
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This Pull Request is related to the #2058 and the discussion in the discord chat.
It changes the following:
- Adds a `take` method to `JsArrayBuffer`
- Builds out `JsArrayBuffer` docs
- Adds a `JsArrayBuffer::take()` example to `jsarraybuffer.rs` in `boa_examples`
This PR adds a safe wrapper around JavaScript `JsDate` from `builtins::date`, and is being tracked at #2098.
#### Implements following methods
- [x] `new Date()`
- [x] `Date.prototype.getDate()`
- [x] `Date.prototype.getDay()`
- [x] `Date.prototype.getFullYear()`
- [x] `Date.prototype.getHours()`
- [x] `Date.prototype.getMilliseconds()`
- [x] `Date.prototype.getMinutes()`
- [x] `Date.prototype.getMonth()`
- [x] `Date.prototype.getSeconds()`
- [x] `Date.prototype.getTime()`
- [x] `Date.prototype.getTimezoneOffset()`
- [x] `Date.prototype.getUTCDate()`
- [x] `Date.prototype.getUTCDay()`
- [x] `Date.prototype.getUTCFullYear()`
- [x] `Date.prototype.getUTCHours()`
- [x] `Date.prototype.getUTCMilliseconds()`
- [x] `Date.prototype.getUTCMinutes()`
- [x] `Date.prototype.getUTCMonth()`
- [x] `Date.prototype.getUTCSeconds()`
- [x] `Date.prototype.getYear()`
- [x] `Date.now()`
- [ ] `Date.parse()` Issue 4
- [x] `Date.prototype.setDate()`
- [x] `Date.prototype.setFullYear()`
- [ ] `Date.prototype.setHours()` Issue 3
- [x] `Date.prototype.setMilliseconds()`
- [ ] `Date.prototype.setMinutes()` Issue 3
- [x] `Date.prototype.setMonth()`
- [x] `Date.prototype.setSeconds()`
- [x] `Date.prototype.setTime()`
- [x] `Date.prototype.setUTCDate()`
- [x] `Date.prototype.setUTCFullYear()`
- [x] `Date.prototype.setUTCHours()`
- [x] `Date.prototype.setUTCMilliseconds()`
- [x] `Date.prototype.setUTCMinutes()`
- [x] `Date.prototype.setUTCMonth()`
- [x] `Date.prototype.setUTCSeconds()`
- [x] `Date.prototype.setYear()`
- [ ] `Date.prototype.toDateString()` Issue 5
- [ ] `Date.prototype.toGMTString()` Issue 5
- [ ] `Date.prototype.toISOString()` Issue 5
- [ ] `Date.prototype.toJSON()` Issue 5
- [ ] `Date.prototype.toLocaleDateString()` Issue 5 and 6
- [ ] `Date.prototype.toLocaleString()` Issue 5 and 6
- [ ] `Date.prototype.toLocaleTimeString()` Issue 5 and 6
- [ ] `Date.prototype.toString()` Issue 5
- [ ] `Date.prototype.toTimeString()` Issue 5
- [ ] `Date.prototype.toUTCString()` Issue 5
- [x] `Date.UTC()`
- [x] `Date.prototype.valueOf()`
### Issues
1. ~~`get_*()` and some other methods - They take `&self` as input internally, and internal struct shouldn't be used in a wrapper API. Therefore, these would require input to be `this: &JsValue, args: &[JsValue], context: &mut Context` like others and use `this_time_value()`?~~ Fixed using `this_time_value()`
2. ~~`to_string()`- how can I use `Date::to_string()` rather than `alloc::string::ToString`.~~ My bad it compiles, just `rust-analyzer` was showing it as an issue.
3. `set_hours()` and `set_minutes()` - they subtract local timezones when setting the value, e.g.
- On further look:
```rust
// both function call `builtins:📅:mod.rs#L1038
this.set_data(ObjectData::date(t));
// `ObjectData::date` creates a new `Date` object `object::mods.rs#L423
// | this date is chrono::Date<Tz(TimezoneOffset)> and Tz default is being used here which is GMT+0
pub fn date(date: Date) -> Self {
Self {
kind: ObjectKind::Date(date),
internal_methods: &ORDINARY_INTERNAL_METHODS,
}
}
```
- BTW, in `object::mod.rs`'s `enum ObjectKind` there is `Date(chrono::Date)` and it requires
the generic argument, how is it being bypassed here?
- Also in `set_minutes()` step 6, `LocalTime` should be used.
```rust
// reference date = 2000-01-01T06:26:53.984
date.set_hours(&[23.into(), 23.into(), 23.into(), 23.into()], context)?;
// would add tiemzone(+5:30) to it
// Is 2000-01-01T17:53:23.023
// Should be 2000-01-01T23:23:23.023
```
4. `parse()` - it uses `chrono::parse_from_rfc3339` internally, while es6 spec recommends ISO8601. And it can also parse other formats like from [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse) `04 Dec 1995 00:12:00 GMT` which fails. So what should be done about it.
5. `to_*()` - This is more general, as the internal date object uses `chrono::NaiveDateTime` which doesn't have timezone. It doesn't account for `+4:00` in example below.
```rust
// Creates new `Date` object from given rfc3339 string.
let date = JsDate::new_from_parse(&JsValue::new("2018-01-26T18:30:09.453+04:00"), context);
println!("to_string: {:?}", date2.to_string(context)?);
// IS: Sat Jan 27 2018 00:00:09 GMT+0530
// Should: Fri Jan 26 2018 20:00:09 GMT+0530
```
6. `to_locale_*()` - requires [`ToDateTimeOptions`](https://402.ecma-international.org/9.0/#sec-todatetimeoptions) and localization would require chrono's `unstable-locales` feature, which is available for `DateTime` and not for `NaiveDateTime`.
- I should have looked properly, `to_date_time_options` is already implemented in `builtins::intl`. Anyway, I would still need some tips on how to use it. What would function signature be like in wrapper API, how would `options` be passed to the said API.
- So `to_date_time_options()` takes `options: &JsValue` as an argument and build an object from it and fetch properties through `Object.get()`. If I want `options` to be `{ weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' }` what would `JsValue` look like to make it all work.
```rust
date.to_locale_date_string(&[JsValue::new("en_EN"), OPTIONS], context)?;
// OPTIONS need to be a JsValue which when converted into an object
// have these properties { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };
```
### Possible improvements
1. Right now, `object::jsdate::set_full_year()` and alike (input is a slice) are like below, `into()` doesn't feel ergonomic.
```rust
#[inline]
pub fn set_full_year(&self, values: &[JsValue], context: &mut Context) -> JsResult<JsValue> {
Date::set_full_year(&self.inner.clone().into(), values, context)
}
// Usage
date.set_full_year(&[2000.into(), 0.into(), 1.into()], context)?;
// How can something like this be made to work
#[inline]
pub fn set_full_year<T>(&self, values: &[T], context: &mut Context) -> JsResult<JsValue>
where
T: Into<JsValue>,
{
| expected reference `&[value::JsValue]`
| found reference `&[T]`
Date::set_full_year(&self.inner.clone().into(), values, context)
}
```
2. Any other suggestion?
This should hopefully improve our compilation times, both from a clean build and from an incremental compilation snapshot.
Next would be the parser, but it imports `Context`, so it'll require a bit more work.
The number of file changes is obviously big, but almost nothing was changed, I just moved everything to another crate and readjusted the imports of the `parser` module. (Though, I did have to change some details, because there were some functions on the ast that returned `ParseError`s, and the tests had to be moved to the parser)
This Pull Request closes no specific issue, but allows for analysis and post-processing passes by both internal and external developers.
It changes the following:
- Adds a Visitor trait, to be implemented by visitors of a particular node type.
- Adds `Type`Visitor traits which offer access to private members of a node.
- Adds an example which demonstrates the use of Visitor traits by walking over an AST and printing its contents.
At this time, the PR is more of a demonstration of intent rather than a full PR. Once it's in a satisfactory state, I'll mark it as not a draft.
Co-authored-by: Addison Crump <addison.crump@cispa.de>
Boa's `Context::eval()` and `Context::parse()` functions allow reading a byte slice directly, apart from a string. We were not showing this properly in our examples, so this modifies the `loadfile.rs` example to use a byte vector instead of a string, which allows us to use UTF-16 files, if I'm not mistaken.
This is an experiment that tries to migrate the codebase from eager `Error` objects to lazy ones.
In short words, this redefines `JsResult = Result<JsValue, JsError>`, where `JsError` is a brand new type that stores only the essential part of an error type, and only transforms those errors to `JsObject`s on demand (when having to pass them as arguments to functions or store them inside async/generators).
This change is pretty big, because it unblocks a LOT of code from having to take a `&mut Context` on each call. It also paves the road for possibly making `JsError` a proper variant of `JsValue`, which can be a pretty big optimization for try/catch.
A downside of this is that it exposes some brand new error types to our public API. However, we can now implement `Error` on `JsError`, making our `JsResult` type a bit more inline with Rust's best practices.
~Will mark this as draft, since it's missing some documentation and a lot of examples, but~ it's pretty much feature complete. As always, any comments about the design are very much appreciated!
Note: Since there are a lot of changes which are essentially just rewriting `context.throw` to `JsNativeError::%type%`, I'll leave an "index" of the most important changes here:
- [boa_engine/src/error.rs](https://github.com/boa-dev/boa/pull/2283/files#diff-f15f2715655440626eefda5c46193d29856f4949ad37380c129a8debc6b82f26)
- [boa_engine/src/builtins/error/mod.rs](https://github.com/boa-dev/boa/pull/2283/files#diff-3eb1e4b4b5c7210eb98192a5277f5a239148423c6b970c4ae05d1b267f8f1084)
- [boa_tester/src/exec/mod.rs](https://github.com/boa-dev/boa/pull/2283/files#diff-fc3d7ad7b5e64574258c9febbe56171f3309b74e0c8da35238a76002f3ee34d9)
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This Pull Request is related to #2098.
It changes the following:
- Implements `JsRegExp`
- Adds a brief `JsRegExp` example under `boa_examples`
I think it's time to address the elephant in the room.
This Pull Request will (hopefully!) solve part of #736.
This is a complete rewrite of `JsString`, but instead of storing `u8` bytes it stores `u16` words. The `encode!` macro (renamed to `utf16!` for simplicity) from the `const-utf16` crate allows us to create UTF-16 encoded arrays at compilation time. `JsString` implements `Deref<Target=[u16]>` to unlock the slice methods and possibly make some manipulations easier. However, we would need to create our own library of utilities for `JsString`.
This Pull Request closes#2080.
It moves all implementors of the `JsObjectType` trait into their own `js_object` module.
This should simplify documentation and by doing a `pub(crate)` export in `object` little to no imports within the crate need to be changed, simplifying the usage of this module within the boa_engine crate.
Documentation within the `object` module has been updated to reflect this change and in a way that it is shown on the home page of the documentation.
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This Pull Request is related to #2098 .
It changes the following:
- Implements a wrapper for `DataView`
- Adds an example of `JsDataView` to the `JsArrayBuffer` example file under boa_examples
Co-authored-by: jedel1043 <jedel0124@gmail.com>
This PR adds the `ArrayBuffer` rust wrapper. It also provides a capability to construct a `JsArrayBuffer` from a user defined blob of data ( `Vec<u8>` ) and it is not cloned, it is directly used as the internal buffer.
This allows us to replace the inifficent `Vec<u8>` to `JsArray` then to `TypedArray` (in typed arrays `from_iter`), with a `JsArrayBuffer` created from user data to `TypedArray`. With this `Vec<u8>` to `JsTypedArray` should be fully fixed as discussed in #2058.
This PR adds a safe wrapper around JavaScript `JsSet` from `builtins::set`, and is being tracked at #2098.
Implements following methods
- [x] `Set.prototype.size`
- [x] `Set.prototype.add(value)`
- [x] `Set.prototype.clear()`
- [x] `Set.prototype.delete(value)`
- [x] `Set.prototype.has(value)`
- [x] `Set.prototype.forEach(callbackFn[, thisArg])`
Implement wrapper for `builtins::set_iterator`, to be used by following.
- [x] `Set.prototype.values()`
- [x] `Set.prototype.keys()`
- [x] `Set.prototype.entries()`
*Note: Are there any other functions that should be added?
Also adds `set_create()` and made `get_size()` public in `builtins::set`.
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This Pull Request related to JsMap for #2098.
Any feedback on implementing JsMapIterator would be welcome. I wasn't entirely sure if it was the right approach, but as I worked on the example file, it felt like something at least similar would be needed to use Map's .entries(), .keys(), and .values() methods.
It changes the following:
- Implements JsMap Wrapper
- Implements JsMapIterator Wrapper
- Creates JsMap example in boa_examples
Added boa examples as per issue #446
Overtaken https://github.com/boa-dev/boa/pull/634
Somehow screwed that branch up by rebasing it and losing access
pings @elasmojs
This Pull Request fixes/closes #446 .
Co-authored-by: Jason Williams <jase.williams@gmail.com>
Co-authored-by: Iban Eguia (Razican) <razican@protonmail.ch>
Co-authored-by: jasonwilliams <jase.williams@gmail.com>
Co-authored-by: jedel1043 <jedel0124@gmail.com>
José Julián Espina
Iban Eguia Moraza
raskad
Kevin
Anuvrat
Addison Crump
Calli
Halid Odat
Jason Williams