Rename `AddToDiagnostic` as `Subdiagnostic`.

To match `derive(Subdiagnostic)`.

Also rename `add_to_diagnostic{,_with}` as `add_to_diag{,_with}`.

1 files changed, 3 insertions, 3 deletions

diff --git a/compiler/rustc_macros/src/diagnostics/subdiagnostic.rs b/compiler/rustc_macros/src/diagnostics/subdiagnostic.rs
index ef326106404..cda9de66a55 100644
--- a/compiler/rustc_macros/src/diagnostics/subdiagnostic.rs
+++ b/compiler/rustc_macros/src/diagnostics/subdiagnostic.rs
@@ -16,7 +16,7 @@ use synstructure::{BindingInfo, Structure, VariantInfo};
 
 use super::utils::SubdiagnosticVariant;
 
-/// The central struct for constructing the `add_to_diagnostic` method from an annotated struct.
+/// The central struct for constructing the `add_to_diag` method from an annotated struct.
 pub(crate) struct SubdiagnosticDeriveBuilder {
     diag: syn::Ident,
     f: syn::Ident,
@@ -86,8 +86,8 @@ impl SubdiagnosticDeriveBuilder {
         let diag = &self.diag;
         let f = &self.f;
         let ret = structure.gen_impl(quote! {
-            gen impl rustc_errors::AddToDiagnostic for @Self {
-                fn add_to_diagnostic_with<__G, __F>(
+            gen impl rustc_errors::Subdiagnostic for @Self {
+                fn add_to_diag_with<__G, __F>(
                     self,
                     #diag: &mut rustc_errors::Diag<'_, __G>,
                     #f: __F