bjoernager/rust
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Tighter spans for bad inherent impl types

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This commit is contained in:
Michael Goulet 2023-02-11 23:17:38 +00:00
parent 0b439b119b
commit e20f6ff1dc
12 changed files with 74 additions and 110 deletions
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33
compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs
View file

@ -57,7 +57,7 @@ const ADD_ATTR: &str =
"alternatively add `#[rustc_allow_incoherent_impl]` to the relevant impl items";
impl<'tcx> InherentCollect<'tcx> {
fn check_def_id(&mut self, item: &hir::Item<'_>, self_ty: Ty<'tcx>, def_id: DefId) {
fn check_def_id(&mut self, item: &hir::Item<'_>, self_ty: Ty<'tcx>, def_id: DefId, span: Span) {
let impl_def_id = item.owner_id;
if let Some(def_id) = def_id.as_local() {
// Add the implementation to the mapping from implementation to base
@ -76,12 +76,12 @@ impl<'tcx> InherentCollect<'tcx> {
if !self.tcx.has_attr(def_id, sym::rustc_has_incoherent_inherent_impls) {
struct_span_err!(
self.tcx.sess,
item.span,
span,
E0390,
"cannot define inherent `impl` for a type outside of the crate where the type is defined",
)
.help(INTO_DEFINING_CRATE)
.span_help(item.span, ADD_ATTR_TO_TY)
.span_help(span, ADD_ATTR_TO_TY)
.emit();
return;
}
@ -93,12 +93,12 @@ impl<'tcx> InherentCollect<'tcx> {
{
struct_span_err!(
self.tcx.sess,
item.span,
span,
E0390,
"cannot define inherent `impl` for a type outside of the crate where the type is defined",
)
.help(INTO_DEFINING_CRATE)
.span_help(impl_item.span, ADD_ATTR)
.span_help(self.tcx.hir().span(impl_item.id.hir_id()), ADD_ATTR)
.emit();
return;
}
@ -112,12 +112,12 @@ impl<'tcx> InherentCollect<'tcx> {
} else {
struct_span_err!(
self.tcx.sess,
item.span,
span,
E0116,
"cannot define inherent `impl` for a type outside of the crate \
where the type is defined"
)
.span_label(item.span, "impl for type defined outside of crate.")
.span_label(span, "impl for type defined outside of crate.")
.note("define and implement a trait or new type instead")
.emit();
}
@ -182,29 +182,30 @@ impl<'tcx> InherentCollect<'tcx> {
}
let item = self.tcx.hir().item(id);
let hir::ItemKind::Impl(hir::Impl { of_trait: None, self_ty: ty, items, .. }) = item.kind else {
let impl_span = self.tcx.hir().span(id.hir_id());
let hir::ItemKind::Impl(hir::Impl { of_trait: None, items, .. }) = item.kind else {
return;
};
let self_ty = self.tcx.type_of(item.owner_id);
match *self_ty.kind() {
ty::Adt(def, _) => {
self.check_def_id(item, self_ty, def.did());
self.check_def_id(item, self_ty, def.did(), impl_span);
}
ty::Foreign(did) => {
self.check_def_id(item, self_ty, did);
self.check_def_id(item, self_ty, did, impl_span);
}
ty::Dynamic(data, ..) if data.principal_def_id().is_some() => {
self.check_def_id(item, self_ty, data.principal_def_id().unwrap());
self.check_def_id(item, self_ty, data.principal_def_id().unwrap(), impl_span);
}
ty::Dynamic(..) => {
struct_span_err!(
self.tcx.sess,
ty.span,
impl_span,
E0785,
"cannot define inherent `impl` for a dyn auto trait"
)
.span_label(ty.span, "impl requires at least one non-auto trait")
.span_label(impl_span, "impl requires at least one non-auto trait")
.note("define and implement a new trait or type instead")
.emit();
}
@ -221,17 +222,17 @@ impl<'tcx> InherentCollect<'tcx> {
| ty::Never
| ty::FnPtr(_)
| ty::Tuple(..) => {
self.check_primitive_impl(item.owner_id.def_id, self_ty, items, ty.span)
self.check_primitive_impl(item.owner_id.def_id, self_ty, items, impl_span)
}
ty::Alias(..) | ty::Param(_) => {
let mut err = struct_span_err!(
self.tcx.sess,
ty.span,
impl_span,
E0118,
"no nominal type found for inherent implementation"
);
err.span_label(ty.span, "impl requires a nominal type")
err.span_label(impl_span, "impl requires a nominal type")
.note("either implement a trait on it or create a newtype to wrap it instead");
err.emit();