1 files changed, 22 insertions, 5 deletions
diff --git a/chain/src/default.rs b/chain/src/default.rs
index 042f84e..db42ef8 100644
--- a/chain/src/default.rs
+++ b/chain/src/default.rs
@@ -224,6 +224,9 @@ pub struct DefaultChain {
     accepting_sources: Vec<PaVi>,
 }
 
+// TODO: Implement saving the chain on disk, so that we do not have to
+// load the grammar every time.
+
 impl DefaultChain {
     /// Return the current node.
     #[inline]
@@ -311,6 +314,7 @@ impl DefaultChain {
         let mut file = std::fs::File::options()
             .write(true)
             .create(true)
+            .truncate(true)
             .open(&filename)?;
 
         use std::io::Write;
@@ -320,21 +324,25 @@ impl DefaultChain {
 }
 
 impl LabelGraph<Edge> for DefaultChain {
-    type Iter<'a> = <DLGraph<Edge> as LabelGraph<Edge>>::Iter<'a>
+    type Iter<'a>
+        = <DLGraph<Edge> as LabelGraph<Edge>>::Iter<'a>
     where
         Self: 'a;
 
-    type TupleIter<'a> = <DLGraph<Edge> as LabelGraph<Edge>>::TupleIter<'a>
+    type TupleIter<'a>
+        = <DLGraph<Edge> as LabelGraph<Edge>>::TupleIter<'a>
     where
         Self: 'a,
         Edge: 'a;
 
-    type LabelIter<'a> = <DLGraph<Edge> as LabelGraph<Edge>>::LabelIter<'a>
+    type LabelIter<'a>
+        = <DLGraph<Edge> as LabelGraph<Edge>>::LabelIter<'a>
     where
         Self: 'a,
         Edge: 'a;
 
-    type EdgeLabelIter<'a> = <DLGraph<Edge> as LabelGraph<Edge>>::EdgeLabelIter<'a>
+    type EdgeLabelIter<'a>
+        = <DLGraph<Edge> as LabelGraph<Edge>>::EdgeLabelIter<'a>
     where
         Self: 'a,
         Edge: 'a;
@@ -554,7 +562,7 @@ impl Chain for DefaultChain {
         /// to save some allocations.
         fn generate_edges(
             input: GeneratorInput<'_>,
-            mut child_iter: impl Iterator<Item = usize> + ExactSizeIterator + Clone,
+            mut child_iter: impl ExactSizeIterator<Item = usize> + Clone,
             atom_child_iter: impl Iterator<Item = usize> + Clone,
             mut output: impl AsMut<Vec<(Roi, usize)>>,
         ) -> Result<bool, Error> {
@@ -693,6 +701,15 @@ impl Chain for DefaultChain {
                         let new_pavi = if !no_item {
                             // prepare forest fragment
 
+                            // if ter == 0 {
+                            // println!("{ter}, {t}, {atom_moved}, {atom_label}");
+                            // println!(
+                            //     "hey: {:?}",
+                            //     self.atom.labels_of(0).unwrap().collect::<Vec<_>>()
+                            // );
+                            // panic!("test");
+                            // }
+
                             let fragment =
                                 generate_fragment([atom_moved.into(), Ter(ter).into()], pos)?;