show names for record fields in enum completion

crates/ra_hir/src/code_model.rs

@@ -3,6 +3,7 @@ use std::sync::Arc;
 
 use either::Either;
 use hir_def::{
+    adt::StructKind,
     adt::VariantData,
     builtin_type::BuiltinType,
     docs::Documentation,
@@ -424,6 +425,10 @@ impl EnumVariant {
             .collect()
     }
 
+    pub fn kind(self, db: &impl HirDatabase) -> StructKind {
+        self.variant_data(db).kind()
+    }
+
     pub(crate) fn variant_data(self, db: &impl DefDatabase) -> Arc<VariantData> {
         db.enum_data(self.parent.id).variants[self.id].variant_data.clone()
     }