1 files changed, 3 insertions, 0 deletions

diff --git a/crates/ra_db/src/input.rs b/crates/ra_db/src/input.rs
index f445e03bc..7c3dd9296 100644
--- a/crates/ra_db/src/input.rs
+++ b/crates/ra_db/src/input.rs
@@ -101,6 +101,9 @@ impl CrateGraph {
         }
         self.arena.get_mut(&from).unwrap().add_dep(name, to)
     }
+    pub fn is_empty(&self) -> bool {
+        self.arena.is_empty()
+    }
     pub fn crate_root(&self, crate_id: CrateId) -> FileId {
         self.arena[&crate_id].file_id
     }