diff options
| -rw-r--r-- | clippy_lints/src/mut_reference.rs | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/clippy_lints/src/mut_reference.rs b/clippy_lints/src/mut_reference.rs index 2fd1049f42e..2f1ab3d2652 100644 --- a/clippy_lints/src/mut_reference.rs +++ b/clippy_lints/src/mut_reference.rs @@ -79,25 +79,19 @@ fn check_arguments<'tcx>( name: &str, fn_kind: &str, ) { - match type_definition.kind() { - ty::FnDef(..) | ty::FnPtr(..) => { - let parameters = type_definition.fn_sig(cx.tcx).skip_binder().inputs(); - for (argument, parameter) in iter::zip(arguments, parameters) { - match parameter.kind() { - ty::Ref(_, _, Mutability::Not) | ty::RawPtr(_, Mutability::Not) => { - if let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Mut, _) = argument.kind { - span_lint( - cx, - UNNECESSARY_MUT_PASSED, - argument.span, - format!("the {fn_kind} `{name}` doesn't need a mutable reference"), - ); - } - }, - _ => (), - } + if let ty::FnDef(..) | ty::FnPtr(..) = type_definition.kind() { + let parameters = type_definition.fn_sig(cx.tcx).skip_binder().inputs(); + for (argument, parameter) in iter::zip(arguments, parameters) { + if let ty::Ref(_, _, Mutability::Not) | ty::RawPtr(_, Mutability::Not) = parameter.kind() + && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Mut, _) = argument.kind + { + span_lint( + cx, + UNNECESSARY_MUT_PASSED, + argument.span, + format!("the {fn_kind} `{name}` doesn't need a mutable reference"), + ); } - }, - _ => (), + } } } |