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Make Ty::boxed_ty return an Option

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This commit is contained in:
Pavel Grigorenko 2024-09-05 00:34:04 +03:00
parent 663f20086a
commit 0b8cb4a1eb
5 changed files with 11 additions and 13 deletions
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4
clippy_lints/src/methods/mod.rs
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@ -5187,8 +5187,8 @@ impl SelfKind {
fn matches_value<'a>(cx: &LateContext<'a>, parent_ty: Ty<'a>, ty: Ty<'a>) -> bool {
if ty == parent_ty {
true
} else if ty.is_box() {
ty.boxed_ty() == parent_ty
} else if let Some(boxed_ty) = ty.boxed_ty() {
boxed_ty == parent_ty
} else if is_type_diagnostic_item(cx, ty, sym::Rc) || is_type_diagnostic_item(cx, ty, sym::Arc) {
if let ty::Adt(_, args) = ty.kind() {
args.types().next().map_or(false, |t| t == parent_ty)

4
clippy_lints/src/methods/utils.rs
View file

@ -16,7 +16,7 @@ pub(super) fn derefs_to_slice<'tcx>(
fn may_slice<'a>(cx: &LateContext<'a>, ty: Ty<'a>) -> bool {
match ty.kind() {
ty::Slice(_) => true,
ty::Adt(def, _) if def.is_box() => may_slice(cx, ty.boxed_ty()),
ty::Adt(..) if let Some(boxed) = ty.boxed_ty() => may_slice(cx, boxed),
ty::Adt(..) => is_type_diagnostic_item(cx, ty, sym::Vec),
ty::Array(_, size) => size.try_eval_target_usize(cx.tcx, cx.param_env).is_some(),
ty::Ref(_, inner, _) => may_slice(cx, *inner),
@ -33,7 +33,7 @@ pub(super) fn derefs_to_slice<'tcx>(
} else {
match ty.kind() {
ty::Slice(_) => Some(expr),
ty::Adt(def, _) if def.is_box() && may_slice(cx, ty.boxed_ty()) => Some(expr),
_ if ty.boxed_ty().is_some_and(|boxed| may_slice(cx, boxed)) => Some(expr),
ty::Ref(_, inner, _) => {
if may_slice(cx, *inner) {
Some(expr)