Expect , for parenthesized with items and not at )#10910
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dhruvmanila merged 1 commit intodhruv/parserfrom Apr 15, 2024
Merged
Expect , for parenthesized with items and not at )#10910dhruvmanila merged 1 commit intodhruv/parserfrom
, for parenthesized with items and not at )#10910dhruvmanila merged 1 commit intodhruv/parserfrom
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| code | total | + violation | - violation | + fix | - fix |
|---|---|---|---|---|---|
| PLR6104 | 92 | 0 | 92 | 0 | 0 |
| RUF100 | 26 | 26 | 0 | 0 | 0 |
| PLR1730 | 7 | 7 | 0 | 0 | 0 |
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dhruvmanila
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Apr 12, 2024
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| if with_item_kind == WithItemKind::Parenthesized && !self.at(TokenKind::Rpar) { | ||
| // test_err with_items_parenthesized_missing_comma | ||
| // with (item1 item2): ... | ||
| // with (item1 as f1 item2): ... | ||
| // with (item1, item2 item3, item4): ... | ||
| // with (item1, item2 as f1 item3, item4): ... | ||
| // with (item1, item2: ... | ||
| self.expect(TokenKind::Comma); | ||
| } |
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This is only the case for the first "gap" as any other missing commas will be highlighted by the list parsing in parse_with_items.
MichaReiser
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Apr 15, 2024
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dhruvmanila
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Apr 16, 2024
## Summary This PR fixes a bug in parenthesized with-items parsing where the parser should expect a comma but it didn't. This is the case in the speculative parsing loop of parenthesized with-items. Once the parser finds any token other than comma, it breaks out of the loop. Then, once the parser has determined the with item kind, it needs to expect a comma if it's not the end of parenthesized with-items. ## Test Plan Add inline test cases, verify the snapshots.
dhruvmanila
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## Summary This PR fixes a bug in parenthesized with-items parsing where the parser should expect a comma but it didn't. This is the case in the speculative parsing loop of parenthesized with-items. Once the parser finds any token other than comma, it breaks out of the loop. Then, once the parser has determined the with item kind, it needs to expect a comma if it's not the end of parenthesized with-items. ## Test Plan Add inline test cases, verify the snapshots.
dhruvmanila
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Apr 17, 2024
## Summary This PR fixes a bug in parenthesized with-items parsing where the parser should expect a comma but it didn't. This is the case in the speculative parsing loop of parenthesized with-items. Once the parser finds any token other than comma, it breaks out of the loop. Then, once the parser has determined the with item kind, it needs to expect a comma if it's not the end of parenthesized with-items. ## Test Plan Add inline test cases, verify the snapshots.
dhruvmanila
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Apr 18, 2024
## Summary This PR fixes a bug in parenthesized with-items parsing where the parser should expect a comma but it didn't. This is the case in the speculative parsing loop of parenthesized with-items. Once the parser finds any token other than comma, it breaks out of the loop. Then, once the parser has determined the with item kind, it needs to expect a comma if it's not the end of parenthesized with-items. ## Test Plan Add inline test cases, verify the snapshots.
dhruvmanila
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Apr 18, 2024
(Supersedes #9152, authored by @LaBatata101) ## Summary This PR replaces the current parser generated from LALRPOP to a hand-written recursive descent parser. It also updates the grammar for [PEP 646](https://peps.python.org/pep-0646/) so that the parser outputs the correct AST. For example, in `data[*x]`, the index expression is now a tuple with a single starred expression instead of just a starred expression. Beyond the performance improvements, the parser is also error resilient and can provide better error messages. The behavior as seen by any downstream tools isn't changed. That is, the linter and formatter can still assume that the parser will _stop_ at the first syntax error. This will be updated in the following months. For more details about the change here, refer to the PR corresponding to the individual commits and the release blog post. ## Test Plan Write _lots_ and _lots_ of tests for both valid and invalid syntax and verify the output. ## Acknowledgements - @MichaReiser for reviewing 100+ parser PRs and continuously providing guidance throughout the project - @LaBatata101 for initiating the transition to a hand-written parser in #9152 - @addisoncrump for implementing the fuzzer which helped [catch](#10903) [a](#10910) [lot](#10966) [of](#10896) [bugs](#10877) --------- Co-authored-by: Victor Hugo Gomes <labatata101@linuxmail.org> Co-authored-by: Micha Reiser <micha@reiser.io>
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Summary
This PR fixes a bug in parenthesized with-items parsing where the parser should expect a comma but it didn't.
This is the case in the speculative parsing loop of parenthesized with-items. Once the parser finds any token other than comma, it breaks out of the loop. Then, once the parser has determined the with item kind, it needs to expect a comma if it's not the end of parenthesized with-items.
Test Plan
Add inline test cases, verify the snapshots.