Commit Graph

2557 Commits

Author SHA1 Message Date
konstin 5be2ec5ced Review 2023-09-26 14:21:03 +02:00
konsti 59c37d0cd8
Update crates/ruff_source_file/src/locator.rs
Co-authored-by: Micha Reiser <micha@reiser.io>
2023-09-26 14:05:04 +02:00
konstin f39e8af8ae Add LSP utf-16 coordinates to byte offset conversion 2023-09-26 10:47:38 +02:00
konstin dd8b1244fd Formatter and parser refactoring
I got confused and refactored a bit
2023-09-26 09:53:33 +02:00
Charlie Marsh 93b5d8a0fb
Implement our own small-integer optimization (#7584)
## Summary

This is a follow-up to #7469 that attempts to achieve similar gains, but
without introducing malachite. Instead, this PR removes the `BigInt`
type altogether, instead opting for a simple enum that allows us to
store small integers directly and only allocate for values greater than
`i64`:

```rust
/// A Python integer literal. Represents both small (fits in an `i64`) and large integers.
#[derive(Clone, PartialEq, Eq, Hash)]
pub struct Int(Number);

#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum Number {
    /// A "small" number that can be represented as an `i64`.
    Small(i64),
    /// A "large" number that cannot be represented as an `i64`.
    Big(Box<str>),
}

impl std::fmt::Display for Number {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Number::Small(value) => write!(f, "{value}"),
            Number::Big(value) => write!(f, "{value}"),
        }
    }
}
```

We typically don't care about numbers greater than `isize` -- our only
uses are comparisons against small constants (like `1`, `2`, `3`, etc.),
so there's no real loss of information, except in one or two rules where
we're now a little more conservative (with the worst-case being that we
don't flag, e.g., an `itertools.pairwise` that uses an extremely large
value for the slice start constant). For simplicity, a few diagnostics
now show a dedicated message when they see integers that are out of the
supported range (e.g., `outdated-version-block`).

An additional benefit here is that we get to remove a few dependencies,
especially `num-bigint`.

## Test Plan

`cargo test`
2023-09-25 15:13:21 +00:00
Charlie Marsh 65aebf127a
Treat form feed as whitespace in `SimpleTokenizer` (#7626)
## Summary

This is whitespace as per `is_python_whitespace`, and right now it tends
to lead to panics in the formatter. Seems reasonable to treat it as
whitespace in the `SimpleTokenizer` too.

Closes .https://github.com/astral-sh/ruff/issues/7624.
2023-09-25 14:34:59 +00:00
Charlie Marsh 17ceb5dcb3
Preserve newlines after nested compound statements (#7608)
## Summary

Given:
```python
if True:
    if True:
        pass
    else:
        pass
        # a

        # b
        # c

else:
    pass
```

We want to preserve the newline after the `# c` (before the `else`).
However, the `last_node` ends at the `pass`, and the comments are
trailing comments on the `pass`, not trailing comments on the
`last_node` (the `if`). As such, when counting the trailing newlines on
the outer `if`, we abort as soon as we see the comment (`# a`).

This PR changes the logic to skip _all_ comments (even those with
newlines between them). This is safe as we know that there are no
"leading" comments on the `else`, so there's no risk of skipping those
accidentally.

Closes https://github.com/astral-sh/ruff/issues/7602.

## Test Plan

No change in compatibility.

Before:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 319 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |

After:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 319 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |
2023-09-25 14:21:44 +00:00
Micha Reiser 8ce138760a
Emit `LexError` for dedent to incorrect level (#7638) 2023-09-25 11:45:44 +01:00
dependabot[bot] 10e35e38d7
Bump semver from 1.0.18 to 1.0.19 (#7641)
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-09-25 09:09:17 +00:00
Charlie Marsh 39ddad7454
Refactor FURB105 into explicit cases (#7634)
## Summary

I was having trouble keeping track of the various cases here, so opted
to refactor into a more explicit `match`.
2023-09-24 18:46:09 +00:00
Charlie Marsh f32b0eef9c
Flag FURB105 with starred kwargs (#7630) 2023-09-24 14:28:20 +00:00
Dhruv Manilawala 15813a65f3
Update return type for `PT022` autofix (#7613)
## Summary

This PR fixes the autofix behavior for `PT022` to create an additional
edit for the return type if it's present. The edit will update the
return type from `Generator[T, ...]` to `T`. As per the [official
documentation](https://docs.python.org/3/library/typing.html?highlight=typing%20generator#typing.Generator),
the first position is the yield type, so we can ignore other positions.

```python
typing.Generator[YieldType, SendType, ReturnType]
```

## Test Plan

Add new test cases, `cargo test` and review the snapshots.

fixes: #7610
2023-09-24 06:39:47 +00:00
Tom Kuson 604cf521b5
[`refurb`] Implement `print-empty-string` (`FURB105`) (#7617)
## Summary

Implement
[`simplify-print`](https://github.com/dosisod/refurb/blob/master/refurb/checks/builtin/print.py)
as `print-empty-string` (`FURB105`).

Extends the original rule in that it also checks for multiple empty
string positional arguments with an empty string separator.

Related to #1348.

## Test Plan

`cargo test`
2023-09-24 04:10:36 +00:00
Charlie Marsh 865c89800e
Avoid searching for bracketed comments in unparenthesized generators (#7627)
Similar to tuples, a generator _can_ be parenthesized or
unparenthesized. Only search for bracketed comments if it contains its
own parentheses.

Closes https://github.com/astral-sh/ruff/issues/7623.
2023-09-24 02:08:44 +00:00
Charlie Marsh 1a22eae98c
Use deletion for D215 full-line removals (#7625)
Closes https://github.com/astral-sh/ruff/issues/7619.
2023-09-23 22:44:55 +00:00
Charlie Marsh 8ba8896a7f
Skip BOM when inserting start-of-file imports (#7622)
See:
https://github.com/astral-sh/ruff/issues/7455#issuecomment-1732387485.
2023-09-23 19:36:50 +00:00
Charlie Marsh b194f59aab
Avoid flagging B009 and B010 on starred expressions (#7621)
See:
https://github.com/astral-sh/ruff/issues/7455#issuecomment-1732387247.
2023-09-23 19:08:19 +00:00
Chammika Mannakkara e41b08f1d0
Fix typo in infinite (#7614) 2023-09-23 11:19:36 +00:00
Charlie Marsh 1a4f2a9baf
Avoid reordering mixed-indent-level comments after branches (#7609)
## Summary

Given:

```python
if True:
    if True:
        if True:
            pass

        #a
            #b
        #c
else:
    pass
```

When determining the placement of the various comments, we compute the
indentation depth of each comment, and then compare it to the depth of
the previous statement. It turns out this can lead to reordering
comments, e.g., above, `#b` is assigned as a trailing comment of `pass`,
and so gets reordered above `#a`.

This PR modifies the logic such that when we compute the indentation
depth of `#b`, we limit it to at most the indentation depth of `#a`. In
other words, when analyzing comments at the end of branches, we don't
let successive comments go any _deeper_ than their preceding comments.

Closes https://github.com/astral-sh/ruff/issues/7602.

## Test Plan

`cargo test`

No change in similarity.

Before:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 319 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |

After:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 319 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |
2023-09-22 18:12:31 -04:00
konsti 19010f276e
Fix line ending doc typo (#7611)
Fixes https://docs.astral.sh/ruff/settings/#format-quote-style
2023-09-22 20:16:41 +00:00
Charlie Marsh 5174e8c926
Ignore blank lines between comments when counting newlines-after-imports (#7607)
## Summary

Given:

```python
# -*- coding: utf-8 -*-
import random

# Defaults for arguments are defined here
# args.threshold = None;


logger = logging.getLogger("FastProject")
```

We want to count the number of newlines after `import random`, to ensure
that there's _at least one_, but up to two.

Previously, we used the end range of the statement (then skipped
trivia); instead, we need to use the end of the _last comment_. This is
similar to #7556.

Closes https://github.com/astral-sh/ruff/issues/7604.
2023-09-22 17:49:39 +00:00
Charlie Marsh 8bfe9bda41
Bump version to v0.0.291 (#7606) 2023-09-22 13:25:37 -04:00
Micha Reiser 01843af21a
Support option group documentation (#7593) 2023-09-22 16:31:52 +00:00
Micha Reiser 2ecf59726f
Refactor `Options` representation (#7591) 2023-09-22 18:19:58 +02:00
Charlie Marsh f137819536
Improve `B005` documentation to reflect duplicate-character behavior (#7601)
## Summary

B005 only flags `.strip()` calls for which the argument includes
duplicate characters. This is consistent with bugbear, but isn't
explained in the documentation.
2023-09-22 16:12:16 +00:00
Micha Reiser 9d16e46129
Add most formatter options to `ruff.toml` / `pyproject.toml` (#7566) 2023-09-22 15:47:57 +00:00
dependabot[bot] 82978ac9b5
Bump indicatif from 0.17.6 to 0.17.7 (#7592)
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-09-22 08:54:48 +00:00
Charlie Marsh f254aaa847
Remove unwrap in `os_error_alias.rs` (#7583) 2023-09-21 21:19:32 +00:00
Charlie Marsh a51b0b02f0
Treat `os.error` as an `OSError` alias (#7582)
Closes https://github.com/astral-sh/ruff/issues/7580.
2023-09-21 21:18:14 +00:00
Leiser Fernández Gallo 74dbd871f8
Make ruff format idempotent when using stdin input (#7581)
## Summary
Currently, this happens
```sh
$ echo "print()" | ruff format - 

#Notice that nothing went to stdout
```
Which does not match `ruff check --fix - ` behavior and deletes my code
every time I format it (more or less 5 times per minute 😄).

I just checked that my example works as the change was very
straightforward.
2023-09-21 16:50:23 -04:00
Charlie Marsh d7508af48d
Truncate to one empty line in stub files (#7558)
## Summary

This PR modifies a variety of sites in which we insert up to two empty
lines to instead truncate to at most one empty line in stub files. We
already enforce this in _some_ places, but not all.

## Test Plan

`cargo test`

No changes in similarity (as expected, since this only impacts
unformatted `.pyi` files).

Before:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 323 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |

After:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 323 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |
2023-09-21 16:24:42 -04:00
konsti c3774e1255
Fix gitignore to not ignore files that are required (#7538)
It is apparently possible to add files to the git index, even if they
are part of the gitignore (see e.g.
https://stackoverflow.com/questions/45400361/why-is-gitignore-not-ignoring-my-files,
even though it's strange that the gitignore entries existed before the
files were added, i wouldn't know how to get them added in that case). I
ran
```
git rm -r --cached .
```
then change the gitignore not actually ignore those files with the
exception of
`crates/ruff_cli/resources/test/fixtures/cache_mutable/source.py`, which
is actually a generated file.
2023-09-21 21:33:09 +02:00
Charlie Marsh 887455c498
Use `u8` to represent version segments (#7578) 2023-09-21 14:24:51 -04:00
Charlie Marsh 4d6f5ff0a7
Remove `Int` wrapper type from parser (#7577)
## Summary

This is only used for the `level` field in relative imports (e.g., `from
..foo import bar`). It seems unnecessary to use a wrapper here, so this
PR changes to a `u32` directly.
2023-09-21 17:01:44 +00:00
Micha Reiser 6c3378edb1
Fix the default indent style to tab (#7576) 2023-09-21 15:42:55 +00:00
Charlie Marsh 7f1456a2c9
Allow up to two newlines before trailing clause body comments (#7575)
## Summary

This is the peer to https://github.com/astral-sh/ruff/pull/7557, but for
"leading" clause comments, like:

```python
if True:
    pass


# comment
else:
    pass
```

In this case, we again want to allow up to two newlines at the top
level.

## Test Plan

`cargo test`

No changes.

Before:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 323 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |

After:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 323 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |
2023-09-21 14:52:38 +00:00
Charlie Marsh 2759db6604
Allow up to two newlines after trailing clause body comments (#7557)
## Summary

The number of newlines after a trailing comment in a clause body needs
to follow the usual rules -- so, up to two for top-level, up to one for
nested, etc.

For example, Black preserves both newlines after `# comment` here:

```python
if True:
    pass

    # comment


else:
    pass
```

But it truncates to one newline here:

```python
if True:
    if True:
        pass
        # comment


    else:
        pass
else:
    pass
```

## Test Plan

Significant improvement on `transformers`.

Before:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99957 | 2587 | 402 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |


After:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| **transformers** | **0.99963** | **2587** | **323** |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |
2023-09-21 14:04:49 +00:00
Charlie Marsh 124d95d246
Fix instability in trailing clause body comments (#7556)
## Summary

When we format the trailing comments on a clause body, we check if there
are any newlines after the last statement; if not, we insert one.

This logic didn't take into account that the last statement could itself
have trailing comments, as in:

```python
if True:
    pass

    # comment
else:
    pass
```

We were thus inserting a newline after the comment, like:

```python
if True:
    pass

    # comment

else:
    pass
```

In the context of function definitions, this led to an instability,
since we insert a newline _after_ a function, which would in turn lead
to the bug above appearing in the second formatting pass.

Closes https://github.com/astral-sh/ruff/issues/7465.

## Test Plan

`cargo test`

Small improvement in `transformers`, but no regressions.

Before:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99956 | 2587 | 404 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |

After:

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

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| **transformers** | **0.99957** | **2587** | **402** |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |
2023-09-21 13:32:16 +00:00
dependabot[bot] 288c07d911
Bump rayon from 1.7.0 to 1.8.0 (#7564)
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-09-21 11:52:41 +02:00
Micha Reiser f8f1cd5016
Introduce `FormatterSettings` (#7545) 2023-09-21 08:01:24 +02:00
Charlie Marsh 87a0cd219f
Detect `asyncio.get_running_loop` calls in RUF006 (#7562)
## Summary

We can do a good enough job detecting this with our existing semantic
model.

Closes https://github.com/astral-sh/ruff/issues/3237.
2023-09-21 04:37:38 +00:00
Charlie Marsh b685ee4749
Enable tab completion for `ruff rule` (#7560)
## Summary

Writing `ruff rule E1`, then tab, shows:

<img width="724" alt="Screen Shot 2023-09-20 at 9 29 09 PM"
src="https://github.com/astral-sh/ruff/assets/1309177/00297f24-8828-4485-a00e-6af1ab4e7875">

Closes https://github.com/astral-sh/ruff/issues/2812.
2023-09-20 22:05:39 -04:00
Charlie Marsh ad893f8295
Avoid invalid fix for parenthesized values in F601 (#7559)
Closes https://github.com/astral-sh/ruff/issues/4897.
2023-09-21 01:28:11 +00:00
Charlie Marsh 621bed55c0
Add padding in `PERF102` fixes (#7554)
Closes https://github.com/astral-sh/ruff/issues/7097.
2023-09-20 19:33:54 -04:00
Charlie Marsh a0917ec658
Avoid inserting imports directly after continuation (#7553)
## Summary

This is extremely rare in practice, but common in the fuzzer issues so
worth fixing quickly.

Closes https://github.com/astral-sh/ruff/issues/7199.
2023-09-20 21:26:48 +00:00
Charlie Marsh 5df0326bc8
Treat parameters-with-newline as empty in function formatting (#7550)
## Summary

If a function has no parameters (and no comments within the parameters'
`()`), we're supposed to wrap the return annotation _whenever_ it
breaks. However, our `empty_parameters` test didn't properly account for
the case in which the parameters include a newline (but no other
content), like:

```python
def get_dashboards_hierarchy(
) -> Dict[Type['BaseDashboard'], List[Type['BaseDashboard']]]:
    """Get hierarchy of dashboards classes.

    Returns:
        Dict of dashboards classes.
    """
    dashboards_hierarchy = {}
```

This PR fixes that detection. Instead of lexing, it now checks if the
parameters itself is empty (or if it contains comments).

Closes https://github.com/astral-sh/ruff/issues/7457.
2023-09-20 16:20:22 -04:00
Micha Reiser 6540321966
Move `Settings` and `ResolverSettings` to `ruff_workspace`
## Summary

## Stack Summary

This stack splits `Settings` into `FormatterSettings` and `LinterSettings` and moves it into `ruff_workspace`. This change is necessary to add the `FormatterSettings` to `Settings` without adding `ruff_python_formatter` as a dependency to `ruff_linter` (and the linter should not contain the formatter settings). 

A quick overview of our settings struct at play:

* `Options`: 1:1 representation of the options in the `pyproject.toml` or `ruff.toml`.  Used for deserialization.
* `Configuration`: Resolved `Options`, potentially merged from multiple configurations (when using `extend`). The representation is very close if not identical to the `Options`.
* `Settings`: The resolved configuration that uses a data format optimized for reading. Optional fields are initialized with their default values. Initialized by `Configuration::into_settings` .

The goal of this stack is to split `Settings` into tool-specific resolved `Settings` that are independent of each other. This comes at the advantage that the individual crates don't need to know anything about the other tools. The downside is that information gets duplicated between `Settings`. Right now the duplication is minimal (`line-length`, `tab-width`) but we may need to come up with a solution if more expensive data needs sharing.

This stack focuses on `Settings`. Splitting `Configuration` into some smaller structs is something I'll follow up on later. 

## PR Summary

This PR moves the `ResolverSettings` and `Settings` struct to `ruff_workspace`. `LinterSettings` remains in `ruff_linter` because it gets passed to lint rules, the `Checker` etc.

## Test Plan

`cargo test`
2023-09-20 17:24:28 +02:00
Micha Reiser b34278e0cd
Introduce `LinterSettings`
## Stack Summary

This stack splits `Settings` into `FormatterSettings` and `LinterSettings` and moves it into `ruff_workspace`. This change is necessary to add the `FormatterSettings` to `Settings` without adding `ruff_python_formatter` as a dependency to `ruff_linter` (and the linter should not contain the formatter settings). 

A quick overview of our settings struct at play:

* `Options`: 1:1 representation of the options in the `pyproject.toml` or `ruff.toml`.  Used for deserialization.
* `Configuration`: Resolved `Options`, potentially merged from multiple configurations (when using `extend`). The representation is very close if not identical to the `Options`.
* `Settings`: The resolved configuration that uses a data format optimized for reading. Optional fields are initialized with their default values. Initialized by `Configuration::into_settings` .

The goal of this stack is to split `Settings` into tool-specific resolved `Settings` that are independent of each other. This comes at the advantage that the individual crates don't need to know anything about the other tools. The downside is that information gets duplicated between `Settings`. Right now the duplication is minimal (`line-length`, `tab-width`) but we may need to come up with a solution if more expensive data needs sharing.

This stack focuses on `Settings`. Splitting `Configuration` into some smaller structs is something I'll follow up on later. 

## PR Summary

This PR extracts the linter-specific settings into a new `LinterSettings` struct and adds it as a `linter` field to the `Settings` struct. This is in preparation for moving `Settings` from `ruff_linter` to `ruff_workspace`

## Test Plan

`cargo test`
2023-09-20 17:02:34 +02:00
Micha Reiser 222f1c37b8
Add empty lines between options and move documents (#7547) 2023-09-20 16:40:25 +02:00
Micha Reiser 8f41eab0c7
Extract `ResolverSettings`
## Stack Summary

This stack splits `Settings` into `FormatterSettings` and `LinterSettings` and moves it into `ruff_workspace`. This change is necessary to add the `FormatterSettings` to `Settings` without adding `ruff_python_formatter` as a dependency to `ruff_linter` (and the linter should not contain the formatter settings). 

A quick overview of our settings struct at play:

* `Options`: 1:1 representation of the options in the `pyproject.toml` or `ruff.toml`.  Used for deserialization.
* `Configuration`: Resolved `Options`, potentially merged from multiple configurations (when using `extend`). The representation is very close if not identical to the `Options`.
* `Settings`: The resolved configuration that uses a data format optimized for reading. Optional fields are initialized with their default values. Initialized by `Configuration::into_settings` .

The goal of this stack is to split `Settings` into tool-specific resolved `Settings` that are independent of each other. This comes at the advantage that the individual crates don't need to know anything about the other tools. The downside is that information gets duplicated between `Settings`. Right now the duplication is minimal (`line-length`, `tab-width`) but we may need to come up with a solution if more expensive data needs sharing.

This stack focuses on `Settings`. Splitting `Configuration` into some smaller structs is something I'll follow up on later. 

## PR Summary

This PR extracts a `ResolverSettings` struct that holds all the resolver-relevant fields (uninteresting for the `Formatter` or `Linter`). This will allow us to move the `ResolverSettings` out of `ruff_linter` further up in the stack.


## Test Plan

`cargo test`

(I'll to more extensive testing at the top of this stack)
2023-09-20 16:37:49 +02:00