ruff/crates/ruff_python_formatter/tests
Charlie Marsh 55d6fd53cd
Treat comments on open parentheses in return annotations as dangling (#6413)
## Summary

Given:

```python
def double(a: int) -> ( # Hello
    int
):
    return 2*a
```

We currently treat `# Hello` as a trailing comment on the parameters
(`(a: int)`). This PR adds a placement method to instead treat it as a
dangling comment on the function definition itself, so that it gets
formatted at the end of the definition, like:

```python
def double(a: int) -> int:  # Hello
    return 2*a
```

The formatting in this case is unchanged, but it's incorrect IMO for
that to be a trailing comment on the parameters, and that placement
leads to an instability after changing the grouping in #6410.

Fixing this led to a _different_ instability related to tuple return
type annotations, like:

```python
def zrevrangebylex(self, name: _Key, max: _Value, min: _Value, start: int | None = None, num: int | None = None) -> (  # type: ignore[override]
):
    ...
```

(This is a real example.)

To fix, I had to special-case tuples in that spot, though I'm not
certain that's correct.
2023-08-08 16:48:38 -04:00
..
snapshots Treat comments on open parentheses in return annotations as dangling (#6413) 2023-08-08 16:48:38 -04:00
fixtures.rs Formatter: Add SourceType to context to enable special formatting for stub files (#6331) 2023-08-04 11:52:26 +00:00