2 files changed, 5 insertions, 1 deletions

diff --git a/crates/ra_syntax/Cargo.toml b/crates/ra_syntax/Cargo.toml
index 05cf41a8d..c50dc6c67 100644
--- a/crates/ra_syntax/Cargo.toml
+++ b/crates/ra_syntax/Cargo.toml
@@ -13,7 +13,7 @@ unicode-xid = "0.1.0"
 itertools = "0.8.0"
 drop_bomb = "0.1.4"
 parking_lot = "0.7.0"
-rowan = "0.3.1"
+rowan = "0.3.2"
 
 # ideally, `serde` should be enabled by `ra_lsp_serder`, but we enable it here
 # to reduce number of compilations
diff --git a/crates/ra_syntax/src/yellow.rs b/crates/ra_syntax/src/yellow.rs
index 9b93945cc..a7bfb80e2 100644
--- a/crates/ra_syntax/src/yellow.rs
+++ b/crates/ra_syntax/src/yellow.rs
@@ -177,6 +177,10 @@ impl SyntaxNode {
     pub fn children(&self) -> SyntaxNodeChildren {
         SyntaxNodeChildren(self.0.children())
     }
+
+    pub fn memory_size_of_subtree(&self) -> usize {
+        self.0.memory_size_of_subtree()
+    }
 }
 
 impl fmt::Debug for SyntaxNode {