This Pull Request adds several helpers to resolve#1562.
It adds the following subroutines:
- toDateTimeOptions
- GetOption
- GetNumberOption
- DefaultNumberOption
This Pull Request fixes/closes #948.
It changes the following:
- Implement the global `eval()` function.
Runtime code evaluation brings some challenges for environments. Currently the setting and getting of variable bindings is done via indices that are calculated at compile time. This prevents costly hashmap lookups at runtime.
Evaluiation at runtime needs access to existing compile time environments. This is a relatively easy change. We wrap compile time environments in `Gc` and make them accessible at runtime.
Because `eval()` can add var bindings to existing function environments, we have to adjust the environments for this. Because we cannot recompile all previously stored binding indices, we have to fallback to hashmap lookups at runtime. To prevent this from tanking our performance we add a flag to each environment that marks if any `eval()` has been executed in that environment (or outer environments). This makes it possible to retain the performance of precompiled environment lookups while having a fallback for `eval()`.
TLDR: `eval()` is not only horribly unsafe but also a burden for performance. [Never use eval()!](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval#never_use_eval!)
This Pull Request changes the following:
- Crate dedicated `IdentifierReference` parser and refactor `PrimaryExpression` and `PropertyDefinition` parsers to use it.
- Move `BindingIdentifier` and `LabelIdentifier` parsers from statement parser module to expression parser module to conform with the spec.
- Add and early error case while converting an `ObjectLiteral` to an `ObjectAssignmentPattern`
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This Pull Request implements ResolveLocale abstract method. It is required for further InitializeDateTimeFormat development.
It changes the following:
- Adds several helpers to operate with locale extensions
- Adds DefaultLocale placeholder
- Implements BestAvailableLocale and locale matchers
- Implements UnicodeExtensionsComponents
- Introduces testing
It changes the following:
- The current `JsString` implementation has a lot of duplicate heap allocations. For static strings, `JsString` only needs to store the index of `CONSTANTS_ARRAY`. ~~I let `JsString` can store pointer to heap or static area. The two are distinguished by the first bit. (This implementation is rough, maybe we should put flag into `Inner`, like [arcstr](70ba2fac19/src/arc_str.rs (L751-L757)))~~
- I also added more string constants, which are always used.
This PR adds `JsFunction` wrapper around JavaScript `Function` object, like #1746
With this PR we can distinguish between regular object and function object when we need, such as accessors (because they always need to be functions), predicates in `JsArray` methods like `map`, `find`, etc. With this abstraction we leverage the type system of rust which cleans the API making intentions clear.
It changes the following:
- Make methods that take predicate/callback function take `JsFunction`s
- Make `.accessor()` and `.static_accessor()` take `Option<JsFunction>`
- Make `FunctionBuilder` return `JsFunction`
- Make `ConstructorBuilder` return `JsFunction`
- Make `ClassBuilder` return `JsFunction`
This Pull Request changes the following:
- Implement redeclaration errors in the parser
- Remove redeclaration errors from the compiler (this is a big step towards #1907)
- Fix some failing tests on the way
This requires a slight change in our public api. The Parser new requires a full `Context` instead of just the `Interner` for parsing new code. This is required, because if multiple scripts are parsed (e.g. every input in the REPL) global variables must be checked for redeclarations.
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This Pull Request provides initial implementation for DateTimeFormat constructor. It relates to #1562.
It changes the following:
- Adds `Intl.DateTimeFormat` property
- Partially implements `DateTimeFormat` constructor (`InitializeDateTimeFormat` step is postponed).
- Introduces `ObjectData::DateTimeFormat`
It changes the following:
- `Symbol` object has `[[Construct]]` internal method
- Fix and comment step 1 in `Symbol` constructor.
- Implement step 1 in `BigInt` constructor.
This Pull Request fixes a faulty cast for `Array.splice`.
Negative values for delete_count were being directly casted to usize, which was not the intended behavior. This pull request fixes the issue by using a fallible conversion, defaulting to 0 if the conversion fails.
It changes the following:
- Replace cast in `Array.splice` prototype method with fallible conversion.
This Pull Request changes the following:
- Remove syntax error for unicode escaped characters in keywords from the lexer.
- Adjust the lexer tokens for keywords to indicate if they contain unicode escaped characters.
- Throw syntax errors in parser, when keywords cannot contain unicode escaped characters.
This Pull Request changes the following:
- Allow `Initializer` after `ArrayBindingPattern` in `FormalParameter`
- Refactor `Initializer` detection in `FormalParameter` to avoid clones
This Pull Request changes the following:
- Allow `PropertyName`s in `BindingProperty`in `ObjectBindingPattern`. Previously only `BindingIdentifier`s where allowed.
`ArrayBuffer.isView()` should check whether the object contains a `[[ViewedArrayBuffer]]` internal slot, which `DataView` has.
It changes the following:
- Fix `ArrayBuffer.isView()`
This Pull Request fixes/closes #337.
It changes the following:
- Implement class declaration parsing.
- Implement class expression parsing.
- Implement class execution.
There are still some features like `super` missing and there are some early errors that are not implemented yet. But I think it makes sense to merge this, as we can branch out the missing features from here.
This Pull Request fixes `byteLength` for `ArrayBuffer`. It should be an accessor property rather than a method, per the spec.
It changes the following:
- Removes `byteLength` method for `ArrayBuffer` built-in.
- Add `byteLength` accessor property for `ArrayBuffer`.
- Change `byte_length` function name to `get_byte_length`, to match other function names used for accessor properties.
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This Pull Request fixes/closes #1989.
It changes the following:
- Implements From<f32> for JsValue
Acked-by: Taylor Sutton <tsutton125@gmail.com>
This Pull Request fixes/closes #1998
The call to retrieve operands modifies pc, setting it to the index of
the *next* instruction. So, we save its initial value and use that
for printing.
This Pull Request lets true/false/null be used as object property identifiers, when using dot assignment.
`foo.null = 'bar';`
It changes the following:
- AST parsing of member expressions
This Pull Request fixes length properties on multiple array prototype methods that were including rest parameters in the count. More tests should pass.
It changes the following:
- Length properties on some array prototype methods
This Pull Request makes the non-octal-decimal-integer test pass. The test would previously fail for values with multiple leading zeroes.
It changes the following:
- Number lexer
`Node::DoWhileLoop` ast node had a buggy bytecode generation where `self.patch_jump(exit)` was called after emitting `LoopEnd` opcode. This would patch the loop exit to the instruction following the do while code, which would panic in cases where do while was enclosed in a block statement.
This Pull Request fixes#1929.
It changes the following:
- Patch jump before emitting `Opcode::LoopEnd`
- Add test which has do while statement inside a block statement to demonstrate that the change fixes the panic.
This Pull Request fixes/closes #1962.
It changes the following:
- When executing arithmetic operations on `JsValue`s, try to use integer operations and fallback to `f64` operations on error.
- Adds tests for serde_json conversions from integer operations.
Some of the fields in AST structs were both
1. Arrays
2. Marked as 'flatten'
This is illegal per serde docs (and doesn't really make sense).
The fix is to remove the attribute.
See: https://serde.rs/attr-flatten.htmlFixes: #1920
Co-authored-by: Taras Boiko <me@tboiko.com>
This Pull Request fixes/closes #1942.
`Date.prototype.toDateString` should return a value representing the local date. The Rust `Date` inner value represents UTC time, so it should be adjusted to local time before formatting (see equivalent conversions performed by `to_string` and `to_time_string`).
To verify this is working as intended, run the test suite with your OS timezone set to `GMT+0`, then again with `GMT+10`. The test `date_proto_to_date_string` should pass for each. For me (Ubuntu via WSL), this can be done with `sudo dpkg-reconfigure tzdata`.
This PR also fixes a couple other test cases that used the wrong month value (as noted at the top of the file, JS months are 0-based while `chrono` months are 1-based).
Fixes `BigInt` and `Number` comparison, and vice versa. Before we were removing the decimal point of the floating-point number which was causing cases like `0.000001 > 0n` (or `0n < 0.000001`) to fail.
It changes the following:
- Refreshes the vm and debugging docs to represent the current state
- Fix some bytecode trace output
- Rename a field in the `CodeBlock`
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This Pull Request fixes/closes #1784.
There're still a few tests failing, notably:
- `iter-set-elem-prop-non-writable` - we don't have generator functions implemented
- `calling-from-valid-1-noStrict`, `iter-map-fn-this-non-strict` - `thisArg` in non-strict mode, when undefined, should be inherited (that's what I'm guessing, I haven't confirmed this, but strict counterparts do pass with `thisArg` being `undefined`)
- `source-array-boundary`, `elements-deleted-after` - ~~Not sure yet, still investigating, but they also include thisArg, so perhaps function calling has an underlying issue?~~ Failing because `this` on the top level evaluates to an empty object instead of containing everything from the top scope
Co-authored-by: HalidOdat <halidodat@gmail.com>
This fixes a bug with the postfix increment and decrement. Before those operators would return the left-hand-side value, but the spec specifies they should return ToNumeric(left-had-side value).
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This Pull Request fixes some bugs related to try blocks:
- Fixes a panic when a finally block contained variable declarations. (Thanks to @VTCAKAVSMoACE for the report!)
- Fixes a bug where try blocks in the last position of a statement list didn't return its inner last value as the result of the evaluation.
- Add tests for both cases and two other common cases.
- Extract and cleanup some code.
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This Pull Request fixes/closes #1897.
It changes the following:
- Rejects uninitialized const declarations inside the init value of a for loop statement.
- Adds test for the case.
This PR changes the following:
- Fixes the panics induced by incorrect continues.
- Adds tests which demonstrate the various panics induced.
- Actually rustfmts correctly?
This PR changes the following:
- More elegantly handles illegal access statements in compile_access
- Adds a slew of previously unhandled illegal access test cases
### Caveats
It is very, very likely that you will want to simply restrict unary and assignment operations in the AST. However, this prevents crashes in the meantime with a error that is just slightly less detailed than if it were implemented in AST.
Building up to #186, this PR extracts an `Intrinsics` struct from `Context`, facilitating a lot the extraction of a `Realm` struct.
Also, it adapts the `BuiltIn` trait to be useful for builtins that don't expose a global property on initialization (`Generator`, `TypedArray`, etc.)
It changes the following:
- Creates an `Intrinsics` struct and refactors `Context` to transfer its intrinsic related fields to `Intrinsics`.
- Renames some methods and parameters to better describe their functionality.
- Makes `BuiltIn::init` return `Option<JsValue>` to skip global property initialization if the builtin initialization returns `None`
This PR add `Number.parseInt` and `Number.parseFloat` which according to spec are clones of the global objects `parseInt` and `parseFloat`.
It also fixes the last failing test of the `NativeError` feature with this we get 100% spec complaint `NativeError`s 🎉
It changes the following:
- Add `Number.parseInt()`
- Add `Number.parseFloat()`
- Fix length of `AggregateError`
- Fix length of `Reflect.setPrototypeOf`
Iban Eguia
NorbertGarfield
raskad
兰陈昕
Halid Odat
lupd
Jordan Last
Taylor Sutton
pd
jedel1043
Taras Boiko
Aaron Ross
Nikodem Rabuliński
Addison Crump