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Only run MATCH_OVERLAPPING_ARM on integral matches

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mcarton 2015-12-23 11:25:44 +01:00
parent 90efb7b76d
commit 2fd3093395
1 changed files with 4 additions and 3 deletions
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7
src/matches.rs
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@ -98,7 +98,7 @@ impl LateLintPass for MatchPass {
if let ExprMatch(ref ex, ref arms, MatchSource::Normal) = expr.node { if let ExprMatch(ref ex, ref arms, MatchSource::Normal) = expr.node {
check_single_match(cx, ex, arms, expr); check_single_match(cx, ex, arms, expr);
check_match_bool(cx, ex, arms, expr); check_match_bool(cx, ex, arms, expr);
check_overlapping_arms(cx, arms); check_overlapping_arms(cx, ex, arms);
} }
if let ExprMatch(ref ex, ref arms, source) = expr.node { if let ExprMatch(ref ex, ref arms, source) = expr.node {
check_match_ref_pats(cx, ex, arms, source, expr); check_match_ref_pats(cx, ex, arms, source, expr);
@ -187,8 +187,9 @@ fn check_match_bool(cx: &LateContext, ex: &Expr, arms: &[Arm], expr: &Expr) {
} }
} }
fn check_overlapping_arms(cx: &LateContext, arms: &[Arm]) { fn check_overlapping_arms(cx: &LateContext, ex: &Expr, arms: &[Arm]) {
if arms.len() >= 2 { if arms.len() >= 2 &&
cx.tcx.expr_ty(ex).is_integral() {
let ranges = all_ranges(cx, arms); let ranges = all_ranges(cx, arms);
let overlap = match type_ranges(&ranges) { let overlap = match type_ranges(&ranges) {
TypedRanges::IntRanges(ranges) => overlapping(&ranges).map(|(start, end)| (start.span, end.span)), TypedRanges::IntRanges(ranges) => overlapping(&ranges).map(|(start, end)| (start.span, end.span)),