1 files changed, 16 insertions, 0 deletions
diff --git a/chain/src/atom/default.rs b/chain/src/atom/default.rs
index 317090e..bd71c1c 100644
--- a/chain/src/atom/default.rs
+++ b/chain/src/atom/default.rs
@@ -115,6 +115,22 @@ impl DefaultAtom {
         )?)
     }
 
+    /// Print nullable nodes.
+    pub(crate) fn print_nullables(&self) {
+        print!("printing nullables for the atom: ");
+
+        for nullable in self
+            .accepting_vec
+            .iter()
+            .enumerate()
+            .filter_map(|(index, pred)| (*pred).then(|| index))
+        {
+            print!("{nullable}, ");
+        }
+
+        println!();
+    }
+
     /// Print the underlying NFA.
     pub fn print_nfa<S: AsRef<str>>(&self, filename: S) -> Result<(), std::io::Error> {
         self.nfa.print_viz(filename.as_ref())?;