--- /dev/null
+use crate::def_id::DefId;
+use rustc_data_structures::fx::FxHashMap;
+use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
+use rustc_span::Symbol;
+
+#[derive(Debug, Default)]
+pub struct DiagnosticItems {
+ pub id_to_name: FxHashMap<DefId, Symbol>,
+ pub name_to_id: FxHashMap<Symbol, DefId>,
+}
+
+impl<CTX: crate::HashStableContext> HashStable<CTX> for DiagnosticItems {
+ #[inline]
+ fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher) {
+ self.name_to_id.hash_stable(ctx, hasher);
+ }
+}