1 files changed, 4 insertions, 0 deletions

diff --git a/crates/ra_hir_def/src/body.rs b/crates/ra_hir_def/src/body.rs
index 1c9c86449..622c836d1 100644
--- a/crates/ra_hir_def/src/body.rs
+++ b/crates/ra_hir_def/src/body.rs
@@ -34,6 +34,10 @@ impl Expander {
         self.original_file_id != self.current_file_id
     }
 
+    fn to_source<T>(&self, ast: T) -> Source<T> {
+        Source { file_id: self.current_file_id, ast }
+    }
+
     fn resolve_path_as_macro(&self, db: &impl DefDatabase2, path: &Path) -> Option<MacroDefId> {
         self.crate_def_map.resolve_path(db, self.module.module_id, path).0.get_macros()
     }