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Respect parenthesized generators in has_own_parentheses (#8100)

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## Summary

When analyzing:

```python
if "root" not in (
    long_tree_name_tree.split("/")[0]
    for long_tree_name_tree in really_really_long_variable_name
):
    msg = "Could not find root. Please try a different forest."
    raise ValueError(msg)
```

We missed that the generator expression is parenthesized, because the
parentheses are _part_ of the generator -- so
`is_expression_parenthesized` returns `False`. We needed to take into
account that generators and tuples may or may not be parenthesized when
determining whether we can omit parentheses while splitting an
expression.

Closes https://github.com/astral-sh/ruff/issues/8090.

## Test Plan

No changes in similarity.

Before:

| project | similarity index | total files | changed files |

|----------------|------------------:|------------------:|------------------:|
| cpython | 0.75803 | 1799 | 1647 |
| django | 0.99983 | 2772 | 34 |
| home-assistant | 0.99953 | 10596 | 186 |
| poetry | 0.99891 | 317 | 17 |
| transformers | 0.99966 | 2657 | 330 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99978 | 3669 | 20 |
| warehouse | 0.99977 | 654 | 13 |
| zulip | 0.99970 | 1459 | 22 |

After:

| project | similarity index | total files | changed files |

|----------------|------------------:|------------------:|------------------:|
| cpython | 0.75803 | 1799 | 1647 |
| django | 0.99983 | 2772 | 34 |
| home-assistant | 0.99953 | 10596 | 186 |
| poetry | 0.99891 | 317 | 17 |
| transformers | 0.99966 | 2657 | 330 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99978 | 3669 | 20 |
| warehouse | 0.99977 | 654 | 13 |
| zulip | 0.99970 | 1459 | 22 |
This commit is contained in:
Charlie Marsh 2023-10-22 16:58:25 -07:00 • committed by GitHub
parent bcaac9693b
commit 95702e408f
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2
crates/ruff_python_formatter/src/expression/expr_tuple.rs
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@ -224,7 +224,7 @@ impl NeedsParentheses for ExprTuple {
/// Return `true` if a tuple is parenthesized in the source code.
pub(crate) fn is_tuple_parenthesized(tuple: &ExprTuple, source: &str) -> bool {
let Some(elt) = tuple.elts.first() else {
return false;
return true;
};
// Count the number of open parentheses between the start of the tuple and the first element.