ruff/crates/ruff_python_parser/tests
Brent Westbrook 318f503714
[syntax-errors] Named expressions in decorators before Python 3.9 (#16386)
Summary
--

This PR detects the relaxed grammar for decorators proposed in [PEP
614](https://peps.python.org/pep-0614/) on Python 3.8 and lower.

The 3.8 grammar for decorators is
[here](https://docs.python.org/3.8/reference/compound_stmts.html#grammar-token-decorators):

```
decorators                ::=  decorator+
decorator                 ::=  "@" dotted_name ["(" [argument_list [","]] ")"] NEWLINE
dotted_name               ::=  identifier ("." identifier)*
```

in contrast to the current grammar
[here](https://docs.python.org/3/reference/compound_stmts.html#grammar-token-python-grammar-decorators)

```
decorators                ::= decorator+
decorator                 ::= "@" assignment_expression NEWLINE
assignment_expression ::= [identifier ":="] expression
```

Test Plan
--

New inline parser tests.
2025-03-05 17:08:18 +00:00
..
snapshots [syntax-errors] Named expressions in decorators before Python 3.9 (#16386) 2025-03-05 17:08:18 +00:00
fixtures.rs Document LinterResult::has_syntax_error and add Parsed::has_no_syntax_errors (#16443) 2025-03-04 08:35:38 -05:00
generate_inline_tests.rs Replace LALRPOP parser with hand-written parser (#10036) 2024-04-18 17:57:39 +05:30