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error_impl_error: Get Error DefId after checking the HIR tree.

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This commit is contained in:
Jason Newcomb 2024-06-10 02:26:28 -04:00
parent 672b8b512a
commit 5b0dac6fe2
1 changed files with 3 additions and 6 deletions
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9
clippy_lints/src/error_impl_error.rs
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@ -36,15 +36,12 @@ declare_lint_pass!(ErrorImplError => [ERROR_IMPL_ERROR]);
impl<'tcx> LateLintPass<'tcx> for ErrorImplError {
fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) {
let Some(error_def_id) = cx.tcx.get_diagnostic_item(sym::Error) else {
return;
};
match item.kind {
ItemKind::TyAlias(..)
if item.ident.name == sym::Error
&& is_visible_outside_module(cx, item.owner_id.def_id)
&& let ty = cx.tcx.type_of(item.owner_id).instantiate_identity()
&& let Some(error_def_id) = cx.tcx.get_diagnostic_item(sym::Error)
&& implements_trait(cx, ty, error_def_id, &[]) =>
{
span_lint(
@ -56,9 +53,9 @@ impl<'tcx> LateLintPass<'tcx> for ErrorImplError {
},
ItemKind::Impl(imp)
if let Some(trait_def_id) = imp.of_trait.and_then(|t| t.trait_def_id())
&& let Some(error_def_id) = cx.tcx.get_diagnostic_item(sym::Error)
&& error_def_id == trait_def_id
&& let Some(def_id) = path_res(cx, imp.self_ty).opt_def_id().and_then(DefId::as_local)
&& let hir_id = cx.tcx.local_def_id_to_hir_id(def_id)
&& let Some(ident) = cx.tcx.opt_item_ident(def_id.to_def_id())
&& ident.name == sym::Error
&& is_visible_outside_module(cx, def_id) =>
@ -66,7 +63,7 @@ impl<'tcx> LateLintPass<'tcx> for ErrorImplError {
span_lint_hir_and_then(
cx,
ERROR_IMPL_ERROR,
hir_id,
cx.tcx.local_def_id_to_hir_id(def_id),
ident.span,
"exported type named `Error` that implements `Error`",
|diag| {