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ruff/crates/ruff_python_parser
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Dhruv Manilawala 3b19df04d7
Use cursor offset for lexer checkpoint (#11734) 
## Summary

This PR updates the lexer checkpoint to store the cursor offset instead
of cloning the cursor itself. This reduces the size of `LexerCheckpoint`
from 136 to 112 bytes and also removes the need for lifetime.

## Test Plan

`cargo insta test`
2024-06-04 14:13:57 +05:30
..
resources Maintain synchronicity between the lexer and the parser (#11457) 2024-06-03 18:23:50 +05:30
src Use cursor offset for lexer checkpoint (#11734) 2024-06-04 14:13:57 +05:30
tests Maintain synchronicity between the lexer and the parser (#11457) 2024-06-03 18:23:50 +05:30
Cargo.toml Remove less used parser dependencies (#11718) 2024-06-03 13:08:24 +00:00
CONTRIBUTING.md Add basic docs for the parser crate (#11199) 2024-04-29 17:08:07 +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.