use `pluralize!`

[rust.git] / compiler / rustc_typeck / src / check / method / suggest.rs

diff --git a/compiler/rustc_typeck/src/check/method/suggest.rs b/compiler/rustc_typeck/src/check/method/suggest.rs
index 7bf167426f7480cd5badf1b06051ecc2e1d1455d..ffd369ec61fd824fc3e23dccf50b569a982bd71b 100644 (file)
--- a/compiler/rustc_typeck/src/check/method/suggest.rs
+++ b/compiler/rustc_typeck/src/check/method/suggest.rs
@@ -19,6 +19,7 @@
 use rustc_middle::ty::ToPolyTraitRef;
 use rustc_middle::ty::{self, DefIdTree, ToPredicate, Ty, TyCtxt, TypeVisitable};
 use rustc_span::symbol::{kw, sym, Ident};
+use rustc_span::Symbol;
 use rustc_span::{lev_distance, source_map, ExpnKind, FileName, MacroKind, Span};
 use rustc_trait_selection::traits::error_reporting::on_unimplemented::InferCtxtExt as _;
 use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt as _;
@@ -1122,7 +1123,7 @@ trait bound{s}",
                          add a `use` for {one_of_them}:",
                         an = if candidates.len() == 1 { "an" } else { "" },
                         s = pluralize!(candidates.len()),
-                        were = if candidates.len() == 1 { "was" } else { "were" },
+                        were = pluralize!("was", candidates.len()),
                         one_of_them = if candidates.len() == 1 { "it" } else { "one_of_them" },
                     );
                     self.suggest_use_candidates(&mut err, help, candidates);
@@ -1548,7 +1549,7 @@ fn suggest_derive(
             Option<ObligationCause<'tcx>>,
         )],
     ) {
-        let mut derives = Vec::<(String, Span, String)>::new();
+        let mut derives = Vec::<(String, Span, Symbol)>::new();
         let mut traits = Vec::<Span>::new();
         for (pred, _, _) in unsatisfied_predicates {
             let ty::PredicateKind::Trait(trait_pred) = pred.kind().skip_binder() else { continue };
@@ -1581,12 +1582,12 @@ fn suggest_derive(
                                 derives.push((
                                     self_name.clone(),
                                     self_span,
-                                    parent_diagnostic_name.to_string(),
+                                    parent_diagnostic_name,
                                 ));
                             }
                         }
                     }
-                    derives.push((self_name, self_span, diagnostic_name.to_string()));
+                    derives.push((self_name, self_span, diagnostic_name));
                 } else {
                     traits.push(self.tcx.def_span(trait_pred.def_id()));
                 }
@@ -1609,7 +1610,7 @@ fn suggest_derive(
                     continue;
                 }
             }
-            derives_grouped.push((self_name, self_span, trait_name));
+            derives_grouped.push((self_name, self_span, trait_name.to_string()));
         }
 
         let len = traits.len();