X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_lint%2Fsrc%2Fderef_into_dyn_supertrait.rs;h=dff5a645c175ecf11c0d30de5917caa78148f659;hb=00efb0cb960e4b89a80cad7d44fa0eefd223f513;hp=1d29a234a3c882192c31cf9b81aabca6a8db9022;hpb=da1ca5df6e0ce759d409ce853d836cb00542c44f;p=rust.git

diff --git a/compiler/rustc_lint/src/deref_into_dyn_supertrait.rs b/compiler/rustc_lint/src/deref_into_dyn_supertrait.rs
index 1d29a234a3c..dff5a645c17 100644
--- a/compiler/rustc_lint/src/deref_into_dyn_supertrait.rs
+++ b/compiler/rustc_lint/src/deref_into_dyn_supertrait.rs
@@ -1,6 +1,8 @@
-use crate::{LateContext, LateLintPass, LintContext};
+use crate::{
+    lints::{SupertraitAsDerefTarget, SupertraitAsDerefTargetLabel},
+    LateContext, LateLintPass, LintContext,
+};
 
-use rustc_errors::DelayDm;
 use rustc_hir as hir;
 use rustc_middle::{traits::util::supertraits, ty};
 use rustc_span::sym;
@@ -71,22 +73,14 @@ fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item<'tcx>) {
             && supertraits(cx.tcx, t_principal.with_self_ty(cx.tcx, cx.tcx.types.trait_object_dummy_self))
                 .any(|sup| sup.map_bound(|x| ty::ExistentialTraitRef::erase_self_ty(cx.tcx, x)) == target_principal)
         {
-            cx.struct_span_lint(
-                DEREF_INTO_DYN_SUPERTRAIT,
-                cx.tcx.def_span(item.owner_id.def_id),
-                DelayDm(|| {
-                    format!(
-                        "`{t}` implements `Deref` with supertrait `{target_principal}` as target"
-                    )
-                }),
-                |lint| {
-                    if let Some(target_span) = impl_.items.iter().find_map(|i| (i.ident.name == sym::Target).then_some(i.span)) {
-                        lint.span_label(target_span, "target type is set here");
-                    }
-
-                    lint
-                },
-            )
+            let label = impl_.items.iter().find_map(|i| (i.ident.name == sym::Target).then_some(i.span)).map(|label| SupertraitAsDerefTargetLabel {
+                label,
+            });
+            cx.emit_spanned_lint(DEREF_INTO_DYN_SUPERTRAIT, cx.tcx.def_span(item.owner_id.def_id), SupertraitAsDerefTarget {
+                t,
+                target_principal: target_principal.to_string(),
+                label,
+            });
         }
     }
 }