Apply fix availability and applicability when adding to DiagnosticGuard and remove NoqaCode::rule (#18834)

## Summary

This PR removes the last two places we were using `NoqaCode::rule` in
`linter.rs` (see
https://github.com/astral-sh/ruff/pull/18391#discussion_r2154637329 and
https://github.com/astral-sh/ruff/pull/18391#discussion_r2154649726) by
checking whether fixes are actually desired before adding them to a
`DiagnosticGuard`. I implemented this by storing a `Violation`'s `Rule`
on the `DiagnosticGuard` so that we could check if it was enabled in the
embedded `LinterSettings` when trying to set a fix.

All of the corresponding `set_fix` methods on `OldDiagnostic` were now
unused (except in tests where I just set `.fix` directly), so I moved
these to the guard instead of keeping both sets.

The very last place where we were using `NoqaCode::rule` was in the
cache. I just reverted this to parsing the `Rule` from the name. I had
forgotten to update the comment there anyway. Hopefully this doesn't
cause too much of a perf hit.

In terms of binary size, we're back down almost to where `main` was two
days ago
(https://github.com/astral-sh/ruff/pull/18391#discussion_r2155034320):

```
41,559,344 bytes for main 2 days ago
41,669,840 bytes for #18391
41,653,760 bytes for main now (after #18391 merged)
41,602,224 bytes for this branch
```

Only 43 kb up, but that shouldn't all be me this time :)

## Test Plan

Existing tests and benchmarks on this PR
This commit is contained in:
Brent Westbrook 2025-06-24 10:08:36 -04:00 committed by GitHub
parent 0edbd6c390
commit 02ae8e1210
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GPG key ID: B5690EEEBB952194
11 changed files with 73 additions and 102 deletions

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@ -22,7 +22,7 @@ use ruff_cache::cache_dir;
use ruff_formatter::IndentStyle;
use ruff_graph::{AnalyzeSettings, Direction};
use ruff_linter::line_width::{IndentWidth, LineLength};
use ruff_linter::registry::{INCOMPATIBLE_CODES, Rule, RuleSet};
use ruff_linter::registry::{INCOMPATIBLE_CODES, Rule, RuleNamespace, RuleSet};
use ruff_linter::rule_selector::{PreviewOptions, Specificity};
use ruff_linter::rules::{flake8_import_conventions, isort, pycodestyle};
use ruff_linter::settings::fix_safety_table::FixSafetyTable;