Merge pull request #3451 from edwin0cheng/fix-mbe-composited

Fix mbe composited token bug

1 files changed, 4 insertions, 0 deletions

diff --git a/crates/ra_mbe/src/tt_iter.rs b/crates/ra_mbe/src/tt_iter.rs
index 319f1ee65..100184e66 100644
--- a/crates/ra_mbe/src/tt_iter.rs
+++ b/crates/ra_mbe/src/tt_iter.rs
@@ -53,6 +53,10 @@ impl<'a> TtIter<'a> {
             _ => Err(()),
         }
     }
+
+    pub(crate) fn peek_n(&self, n: usize) -> Option<&tt::TokenTree> {
+        self.inner.as_slice().get(n)
+    }
 }
 
 impl<'a> Iterator for TtIter<'a> {