language-servers/ruff
1
0
Fork 0
mirror of https://github.com/astral-sh/ruff.git synced 2025-07-22 12:35:20 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3
ruff/crates/ruff_python_parser
History
Dhruv Manilawala 9c1b6ec411
Use correct range to highlight line continuation error (#12016) 
## Summary

This PR fixes the range highlighted for the line continuation error.

Previously, it would highlight an incorrect range:
```
1 | call(a, b, \\\
  |           ^^ Syntax Error: unexpected character after line continuation character
2 | 
3 | def bar():
  |
```

And now:
```
  |
1 | call(a, b, \\\
  |             ^ Syntax Error: unexpected character after line continuation character
2 | 
3 | def bar():
  |
```

This is implemented by avoiding to update the token range for the
`Unknown` token which is emitted when there's a lexical error. Instead,
the `push_error` helper method will be responsible to update the range
to the error location.

This actually becomes a requirement which can be seen in follow-up PRs.

## Test Plan

Update and validate the snapshot.
2024-06-25 13:35:24 +05:30
..
resources Consider line continuation character for re-lexing (#12008) 2024-06-25 02:13:54 +00:00
src Use correct range to highlight line continuation error (#12016) 2024-06-25 13:35:24 +05:30
tests Use correct range to highlight line continuation error (#12016) 2024-06-25 13:35:24 +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.