language-servers/ruff
1
0
Fork 0
mirror of https://github.com/astral-sh/ruff.git synced 2025-08-03 18:28:56 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3
ruff/crates/ruff_python_parser
History
Brent Westbrook 5697d21fca
[syntax-errors] Irrefutable case pattern before final case (#16905) 
Summary
--

Detects irrefutable `match` cases before the final case using a modified
version
of the existing `Pattern::is_irrefutable` method from the AST crate. The
modified method helps to retrieve a more precise diagnostic range to
match what
Python 3.13 shows in the REPL.

Test Plan
--

New inline tests, as well as some updates to existing tests that had
irrefutable
patterns before the last block.
2025-03-26 12:27:16 -04:00
..
resources [syntax-errors] Irrefutable case pattern before final case (#16905) 2025-03-26 12:27:16 -04:00
src [syntax-errors] Irrefutable case pattern before final case (#16905) 2025-03-26 12:27:16 -04:00
tests [syntax-errors] Irrefutable case pattern before final case (#16905) 2025-03-26 12:27:16 -04:00
Cargo.toml Allow passing ParseOptions to inline tests (#16357) 2025-02-27 10:23:15 -05:00
CONTRIBUTING.md py-fuzzer: recommend using uvx rather than uv run to run the fuzzer (#14645) 2024-11-27 22:19:52 +00:00
README.md Add basic docs for the parser crate (#11199) 2024-04-29 17:08:07 +00:00

README.md

Ruff Python Parser

Ruff's Python parser is a hand-written recursive descent parser which can parse Python source code into an Abstract Syntax Tree (AST). It also utilizes the Pratt parsing technique to parse expressions with different precedence.

Try out the parser in the playground.

Python version support

The parser supports the latest Python syntax, which is currently Python 3.12. It does not throw syntax errors if it encounters a syntax feature that is not supported by the target-version. This will be fixed in a future release (see https://github.com/astral-sh/ruff/issues/6591).

Contributing

Refer to the contributing guidelines to get started and GitHub issues with the parser label for issues that need help.