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Fix Ord of cmp_fix (#12471)

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Micha Reiser 2024-07-23 15:14:22 +02:00 • committed by GitHub
parent f0fc6a95fe
commit 3af6ccb720
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1 changed files with 7 additions and 7 deletions
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14
crates/ruff_linter/src/fix/mod.rs
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@ -130,13 +130,13 @@ fn apply_fixes<'a>(
/// Compare two fixes.
fn cmp_fix(rule1: Rule, rule2: Rule, fix1: &Fix, fix2: &Fix) -> std::cmp::Ordering {
// Always apply `RedefinedWhileUnused` before `UnusedImport`, as the latter can end up fixing
// the former.
{
match (rule1, rule2) {
(Rule::RedefinedWhileUnused, Rule::UnusedImport) => return std::cmp::Ordering::Less,
(Rule::UnusedImport, Rule::RedefinedWhileUnused) => return std::cmp::Ordering::Greater,
_ => std::cmp::Ordering::Equal,
}
// the former. But we can't apply this just for `RedefinedWhileUnused` and `UnusedImport` because it violates
// `< is transitive: a < b and b < c implies a < c. The same must hold for both == and >.`
// See https://github.com/astral-sh/ruff/issues/12469#issuecomment-2244392085
match (rule1, rule2) {
(Rule::RedefinedWhileUnused, _) => std::cmp::Ordering::Less,
(_, Rule::RedefinedWhileUnused) => std::cmp::Ordering::Greater,
_ => std::cmp::Ordering::Equal,
}
// Apply fixes in order of their start position.
.then_with(|| fix1.min_start().cmp(&fix2.min_start()))