The fields like `[[PrivateElements]]` are hardly used but they occupy `24` bytes (on 64-bit arch.) the `ThinVec` type stores the `len` and `cap` right before the elements (like our `JsString` implementation) and only a pointer is kept (if not used it does not allocate!), was going to use this in #2723 , since it uses a `Vec` as a dense storage, but the PR is already too big.
It changes the following:
- Shrink object from `328` to `288` bytes (40 bytes reduction)
- Add the `thin_vec` lightweight crate (single file)
This PR changes the following:
- Adds a new (very simple) security policy, to comply with GitHub standards
- Changes the internal links of the documentation to point to the new boajs.dev domain
- The developer documentation link now lies in the CONTRIBUTING.md file
Currently update expressions get values multiple times. This can lead to multiple executions of object property getters.
This is very similar to #2551. Unfortunateley it seems like we have to sacrifice some code duplication for correctness in these cases. But that is probably for the best, as we can generate more optimized bytecode for each of these `get/set` cases.
This Pull Request changes the following:
- Add locking for `Set`s during iteration. We already do this for `Map`s.
- Properly implement negative zero handling for `add`, `has` and `delete`.
- Refactor some `Set` functions and add spec comments.
This Pull Request fixes#2673.
It changes the following:
- Add early errors to dynamic function constructors.
- Add tests that check for syntax errors when `super` is passed to the function constructor.
~Depends on #2683.~ Merged.
This Pull Request fixes#2658.
It changes the following:
- Makes `for .. of` loop execution more spec compliant.
- Rewrites iterator related opcodes to be able to use it on all for .. of/in loops.
- Adds some utility op codes.
This PR adds the `"trace"` feature flag that enables vm opcode tracing (off by default), most users aren't interested in tracing/debugging that's why I think it should be made out-in.
This Pull Request changes the following:
- Implement `with` statement parsing, ast node, compilation and excution.
- Implement object environments that are used in the `with` statement excution.
The implementation of object environments can probably be optimized further by using more compile-time information about when object environments can exist. Maybe there could also be a separate environment stack for object environments to reduce the filtering and iteration that is needed with the current implementation.
This does not fix all tests in the `test/language/statements/with` suite yet. But for most failing tests that I have looked at we are missing other features / have bugs elsewhere.
As a note for the review:
The functions in the `impl Context` block in `boa_engine/src/environments/runtime.rs` are mostly copied / moved from the existing functions. The only change there should be the addition of the object environment logic. They had to be moved to `Context` because of borrow semantics.
This Pull Request changes the following:
- Add the additional required condition in the Object constructor that checks if the `NewTarget` is the Object constructor itself.
This will fix the remaining test of the `multiplication` and `division` test suite
It changes the following:
- Change `Number.MIN_VALUE` from `f64::MIN_POSITIVE` to `5e-324` value
Hopefully this is a PR in a series of PRs to implement a bytecode optimizer, before that can happen there needs to be a lot of refactoring in the way we store and compile it.
This also give us some memory benefits, it reduces `CodeBlock` size from `264` **=>** `208` (removes `56` bytes).
Additionally when calling `into_boxed_slice`, If the vector has excess capacity, its items will be moved into a newly-allocated buffer with exactly the right capacity removing wasted space.
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This goal of this draft is to begin to implement `CompletionRecords`. This draft switches the `Vm`'s `Opcode` from `JsResult<ShouldExit>` to `CompletionType` where the value is the top of the stack and returns a `CompletionRecord`. Primarily submitting as a draft for now for feedback.
It changes the following:
- Adds `CompletionRecord` and `CompletionType` to `Vm`.
- Changes the evaluation loop from `while` to `loop` that returns a `CompletionType`.
- Adapts `Context::run` to handle `CompletionType` and `CompletionRecord`.
- Removes `FinallyAddresses` in favor of just checking the `env_stack`.
This Pull Request fixes#2657.
It changes the following:
- Handles surrogates when trying to convert f64 codepoints to u16.
- Replaces `abs().floor()` with `truncate` on `is_float_integer`.
the flag got introduced in regress 0.5.0
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This Pull Request fixes/closes: n/a.
It changes the following:
- add test for unicode flag
- add test for native error on failing to parse (got removed in #2651 because the previous example parsing correctly now)
Co-authored-by: Lauren N. Liberda <lauren@selfisekai.rocks>
Bumps [regress](https://github.com/ridiculousfish/regress) from 0.4.1 to 0.5.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/ridiculousfish/regress/releases">regress's releases</a>.</em></p>
<blockquote>
<h2>v0.5.0</h2>
<p>Version 0.5.0 of regress, REGex in Rust with EmcaScript Syntax.</p>
<ul>
<li>Unicode property escape matching like <code>\p{Letter}</code> is implemented</li>
<li>Regex parsing may now use any u32 iterator, not simply strings</li>
<li>The Unicode flag "u" is now recognized. Unicode is no longer the default; however non-Unicode regular expression support still has some known differences from JavaScript.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="ee710e577f"><code>ee710e5</code></a> Remove language about unicode property escapes being unimplemented</li>
<li><a href="8349a8569e"><code>8349a85</code></a> Bump version to 0.5 in preparation for release</li>
<li><a href="60d4f7b595"><code>60d4f7b</code></a> Update the unicode tables for Unicode 15</li>
<li><a href="603833d432"><code>603833d</code></a> Add test for escaping unrecognised chars</li>
<li><a href="f06b2b3ce1"><code>f06b2b3</code></a> Allow all punctuations to be escaped</li>
<li><a href="7443e66ccc"><code>7443e66</code></a> Update hashbrown requirement from 0.12.0 to 0.13.2</li>
<li><a href="ac59d90fd0"><code>ac59d90</code></a> rustfmt classicalbacktrack.rs</li>
<li><a href="cceb877af2"><code>cceb877</code></a> [non-unicode] less strict QuantifierPrefix parsing</li>
<li><a href="0ca4b596ca"><code>0ca4b59</code></a> to2021, simplfy some code.</li>
<li><a href="d076e06315"><code>d076e06</code></a> parse unbalanced right brackets as a literal bracket, if not using unicode flag</li>
<li>Additional commits viewable in <a href="https://github.com/ridiculousfish/regress/compare/v0.4.1...v0.5.0">compare view</a></li>
</ul>
</details>
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Co-authored-by: raskad <32105367+raskad@users.noreply.github.com>
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This Pull Request addresses the broken `cargo clippy` lints that is currently causing CI to fail.
This PR migrates our entire test suite to our new testing API.
It changes the following:
- Migrates tests to new test API.
- Cleans up the API to be a bit more descriptive and maintainable.
- Prettifies our test failure display to show the failed scripts.
- Splits our massive `tests.rs` file into smaller sub-suites.
Example output of a failing test:
Keep Integer type after running unary increment/decrement ops if possible. The integer type will be useful to take fast paths for accessing index properties. (e.g., `let a = 1; arr[++a]`)
~~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`.
Similar to #2604, `GetPropertyByName`/`SetPropertyByName` has only string property key. So, we can skip index and utf16 conversions.
This improves QuickJS benchmark score 5.8% on average.
Richards: 37.0 -> 41.2
DeltaBlue: 38.1 -> 41.4
Crypto: 59.6 -> 59.8
RayTrace: 146 -> 159
EarleyBoyer: 138 -> 142
Splay: 104 -> 106
NavierStokes: 10.2 -> 10.3
This Pull Request closes#1907.
It changes the following:
- Implement several early errors relating to labels, `break` and `continue` in the parser.
- Implement an early error for invalid cover grammar of object literals in the parser.
- Remove all remaining syntax errors from the bytecompiler.
This Pull Request fixes#2605.
It changes the following:
- Adds a CI check to run `cargo test --doc` since `nextest` doesn't support doc tests at the moment.
- Fixes the failing doc tests.
When a rust string literal is given for a property key, boa checks if it can be parsed as an index and converts the string into a utf16 slice. This PR rewrites each hard-coded property key as a utf16 slice so that we can bypass those conversions at runtime.
This improves QuickJS benchmark score 5% on average.
Richards: 35.4 -> 37.0
DeltaBlue: 35.0 -> 38.1
Crypto: 57.6 -> 59.6
RayTrace: 137 -> 146
EarleyBoyer: 131 -> 138
Splay: 98.3 -> 104
NavierStokes: 10.2 -> 10.2
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This Pull Request is meant to address #1900. While working on it, there was a decent amount of refactoring/restructuring. Initially, I had kept with the current approach of just keeping track of a kind and counter on the environment stack, especially because that kept the size of each stack entry to a minimum.
I did, however, make a switch to having the opcode create the `EnvStackEntry` with a start address and exit address for a bit more precision.
It changes the following:
- Consolidates `loop_env_stack` and `try_env_stack` into one `EnvStackEntry` struct.
- Changes `Continue`, `Break`, `LoopStart`, `LoopContinue`, `FinallyStart`, `FinallyEnd` and various others. Most of this primarily revolves around the creating of `EnvStackEntry` and interacting with the `env_stack`.
- Changes/updates the try-catch-finally, break and continue statement compilations as necessary
- Adds an `AbruptCompletionRecord` in place of the `finally_jump` vector.
- Adds some tests for try-catch-finally blocks with breaks.
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>
Hi,
the `vm-implied` fuzzer panics when executing this testcase:
```javascript
try {
new function() {
while (this) {}
}();
} catch {
}
```
`internal error: entered unreachable code: The NoInstructionsRemain native error cannot be converted to an opaque type`
Handling the `NoInstructionsRemain` error upfront instead of going through the VM exception handling logic seems to work.
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Adding a feature flag to the console import in `builtins`. I think this should fix the failing action on the `Upload docs and run benchmarks` step
This Pull Request changes the following:
- Implement binary `in` operation with private names.
- Adding a separate `BinaryInPrivate` expression in addition to the existing `Binary` expression seems like the best way to implement this in a typesafe manner. Other methods like adding an enum for the `Binary` lhs result in having to make assertions.
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.
This Pull Request changes the following:
- Move postfix/prefix increment and decrement operations from the `Unary` expression to a new `Update` expression.
- Add a special type for the `Update` expression target as it is very limited in comparision to an `Unary` target.
- This makes bytecode compilation more typesafe for these operations and removes syntax errors from the bytecompiler without introducing panics (see #1907).
Another change extracted from #2411.
This PR changes the following:
- Improves our identifier parsing with a new `Identifier` parser that unifies parsing for `IdentifierReference`, `BindingIdentifier` and `LabelIdentifier`.
- Slightly improves some error messages.
- Extracts our manual initialization of static `Sym`s with a new `static_syms` proc macro.
- Adds `set_module_mode` and `module_mode` to the cursor to prepare for modules.
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.
Currently the compilation of assignment operators leads to a double object property access, both on the get and set access.
While this refactor adds special access handling instead of using the existing `access_set` and `access_get` functions, it fixes the double access and should also make the resulting code more efficient.
This Pull Request changes the following:
- Remove wrong early errors for static class methods with the computed property name `prototype`.
- Switch static class method definition opcodes from `__define_own_property__` to `define_property_or_throw` to correctly throw runtime errors on property redefinitions.
When compiling a statement list we need to make sure that the last expression that returns a value is compiled with the `use_expr` flag. Currently we set `use_expr` on the last statement of the statement list. This leads to incorrect returns when the last statement does not return a value. This PR fixes this by looking up the last value returning expression in a statement list and setting the `use_expr` appropriately.
Haled Odat
Iban Eguia Moraza
raskad
José Julián Espina
Kevin
lauren n. liberda
dependabot[bot]
Choongwoo Han
raskad
Mrmaxmeier
