non_local_defs: move out from #[derive(LintDiagnostic)] to manual impl

compiler/rustc_lint/src/lints.rs

@@ -1329,40 +1329,88 @@ pub struct SuspiciousDoubleRefCloneDiag<'a> {
 }
 
 // non_local_defs.rs
-#[derive(LintDiagnostic)]
 pub enum NonLocalDefinitionsDiag {
-    #[diag(lint_non_local_definitions_impl)]
-    #[help]
-    #[note(lint_non_local)]
-    #[note(lint_exception)]
-    #[note(lint_non_local_definitions_deprecation)]
     Impl {
         depth: u32,
         body_kind_descr: &'static str,
         body_name: String,
-        #[subdiagnostic]
         cargo_update: Option<NonLocalDefinitionsCargoUpdateNote>,
-        #[suggestion(lint_const_anon, code = "_", applicability = "machine-applicable")]
         const_anon: Option<Span>,
     },
-    #[diag(lint_non_local_definitions_macro_rules)]
     MacroRules {
         depth: u32,
         body_kind_descr: &'static str,
         body_name: String,
-        #[help]
         help: Option<()>,
-        #[help(lint_help_doctest)]
         doctest_help: Option<()>,
-        #[note(lint_non_local)]
-        #[note(lint_exception)]
-        #[note(lint_non_local_definitions_deprecation)]
-        notes: (),
-        #[subdiagnostic]
         cargo_update: Option<NonLocalDefinitionsCargoUpdateNote>,
     },
 }
 
+impl<'a> LintDiagnostic<'a, ()> for NonLocalDefinitionsDiag {
+    fn decorate_lint<'b>(self, diag: &'b mut Diag<'a, ()>) {
+        match self {
+            NonLocalDefinitionsDiag::Impl {
+                depth,
+                body_kind_descr,
+                body_name,
+                cargo_update,
+                const_anon,
+            } => {
+                diag.primary_message(fluent::lint_non_local_definitions_impl);
+                diag.arg("depth", depth);
+                diag.arg("body_kind_descr", body_kind_descr);
+                diag.arg("body_name", body_name);
+
+                diag.help(fluent::lint_help);
+                diag.note(fluent::lint_non_local);
+                diag.note(fluent::lint_exception);
+                diag.note(fluent::lint_non_local_definitions_deprecation);
+
+                if let Some(cargo_update) = cargo_update {
+                    diag.subdiagnostic(&diag.dcx, cargo_update);
+                }
+                if let Some(const_anon) = const_anon {
+                    diag.span_suggestion(
+                        const_anon,
+                        fluent::lint_const_anon,
+                        "_",
+                        Applicability::MachineApplicable,
+                    );
+                }
+            }
+            NonLocalDefinitionsDiag::MacroRules {
+                depth,
+                body_kind_descr,
+                body_name,
+                help,
+                doctest_help,
+                cargo_update,
+            } => {
+                diag.primary_message(fluent::lint_non_local_definitions_macro_rules);
+                diag.arg("depth", depth);
+                diag.arg("body_kind_descr", body_kind_descr);
+                diag.arg("body_name", body_name);
+
+                if let Some(()) = help {
+                    diag.help(fluent::lint_help);
+                }
+                if let Some(()) = doctest_help {
+                    diag.help(fluent::lint_help_doctest);
+                }
+
+                diag.note(fluent::lint_non_local);
+                diag.note(fluent::lint_exception);
+                diag.note(fluent::lint_non_local_definitions_deprecation);
+
+                if let Some(cargo_update) = cargo_update {
+                    diag.subdiagnostic(&diag.dcx, cargo_update);
+                }
+            }
+        }
+    }
+}
+
 #[derive(Subdiagnostic)]
 #[note(lint_non_local_definitions_cargo_update)]
 pub struct NonLocalDefinitionsCargoUpdateNote {

compiler/rustc_lint/src/non_local_def.rs

@@ -250,7 +250,6 @@ fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) {
                         cargo_update: cargo_update(),
                         help: (!is_at_toplevel_doctest).then_some(()),
                         doctest_help: is_at_toplevel_doctest.then_some(()),
-                        notes: (),
                     },
                 )
             }