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add suggestion to update trait if error is in impl

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This commit is contained in:
Fausto 2022-03-01 13:00:02 -05:00
parent abcccc9143
commit 270730f514
1 changed files with 8 additions and 2 deletions
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10
compiler/rustc_infer/src/infer/error_reporting/nice_region_error/different_lifetimes.rs
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@ -167,7 +167,9 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> {
if let Some(anon_reg) = self.tcx().is_suitable_region(sub) {
let hir_id = self.tcx().hir().local_def_id_to_hir_id(anon_reg.def_id);
let generics = match self.tcx().hir().get(hir_id) {
let node = self.tcx().hir().get(hir_id);
let is_impl = matches!(&node, hir::Node::ImplItem(_));
let generics = match node {
hir::Node::Item(&hir::Item {
kind: hir::ItemKind::Fn(_, ref generics, ..),
..
@ -209,8 +211,12 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> {
suggestions.push(new_param_suggestion);
}
let mut sugg = String::from("consider introducing a named lifetime parameter");
if is_impl {
sugg.push_str(" and update trait if needed");
}
err.multipart_suggestion(
"consider introducing a named lifetime parameter",
sugg.as_str(),
suggestions,
Applicability::MaybeIncorrect,
);