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ignore single-match for or patterns

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This commit is contained in:
Manish Goregaokar 2019-09-25 13:34:55 -07:00
parent 982c51e769
commit b5cadd734e
1 changed files with 5 additions and 0 deletions
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5
clippy_lints/src/matches.rs
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@ -255,6 +255,11 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Matches {
#[rustfmt::skip]
fn check_single_match(cx: &LateContext<'_, '_>, ex: &Expr, arms: &[Arm], expr: &Expr) {
if arms.len() == 2 && arms[0].guard.is_none() && arms[1].guard.is_none() {
if let PatKind::Or(..) = arms[0].pat.node {
// don't lint for or patterns for now, this makes
// the lint noisy in unnecessary situations
return;
}
let els = remove_blocks(&arms[1].body);
let els = if is_unit_expr(els) {
None