fix: Replace IteratorStep with NextMethod #44
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Fixes #33. Prevents an infinite loop caused by IteratorStep(iteratorRecord) not actually flagging termination when IteratorRecord is async. Instead, we will directly call iteratorStep.[[NextMethod]], like how `for await` does. Co-Authored-By: Kevin Gibbons <bakkot@gmail.com>
trflynn89
reviewed
Dec 24, 2023
| 1. Set _nextResult_ to ? Await(_nextResult_). | ||
| 1. If _nextResult_ is not an Object, throw a *TypeError* exception. | ||
| 1. Let _done_ be ? IteratorComplete(_nextResult_). | ||
| 1. If _done_ is *true*, | ||
| 1. Perform ? Set(_A_, *"length"*, 𝔽(_k_), *true*). | ||
| 1. Return Completion Record { [[Type]]: ~return~, [[Value]]: _A_, [[Target]]: ~empty~ }. | ||
| 1. Let _nextValue_ be ? IteratorValue(_next_). |
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Hey! Sorry for the post-merge review comment, but should this now be IteratorValue(_nextResult_)?
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You’re right. Thank you for spotting this. I opened #45 and plan to merge it in a few days if nobody else spots any more problems.
js-choi
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Dec 24, 2023
Finish #44’s change, which fixes #33. Co-Authored-By: Kevin Gibbons <bakkot@gmail.com> #44 renamed _next_ to _nextResult_ but one reference was left unchanged. Spotted by @trflynn89.
js-choi
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Dec 24, 2023
Finish #44’s change, which fixes #33. Co-Authored-By: Kevin Gibbons <bakkot@gmail.com> #44 renamed _next_ to _nextResult_ but one reference was left unchanged. Spotted by @trflynn89.
js-choi
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Dec 27, 2023
Finish #44’s change, which fixes #33. Co-Authored-By: Kevin Gibbons <bakkot@gmail.com> #44 renamed _next_ to _nextResult_ but one reference was left unchanged. Spotted by @trflynn89.
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Fixes #33.
Prevents an infinite loop caused by IteratorStep(iteratorRecord) not actually flagging termination when IteratorRecord is async. Instead, we will directly call iteratorStep.[[NextMethod]], like how
for awaitdoes. Uses the patch suggested by @bakkot.