Fix a bug of using incorrect forest nodes to plant.

Previously some incorrect forest nodes will be used for planting new
nodes.  I cannot fix the root cause of their presence in the
chain-rule machine.  But I can ignore them when they are encountered.

Of course I would like to really prevent them from existing, but still
cannot figure out how.

1 files changed, 7 insertions, 4 deletions

diff --git a/chain/src/item/genins.rs b/chain/src/item/genins.rs
index 262728f..e3e79b6 100644
--- a/chain/src/item/genins.rs
+++ b/chain/src/item/genins.rs
@@ -212,7 +212,7 @@ impl DefaultForest<ForestLabel<GrammarLabel>> {
         // Whether or not to print detailed graphs of each step of
         // operation for debugging purposes.
         let mut to_print = false;
-        // let mut to_print = (8..=10).contains(&pos);
+        // let mut to_print = (11..=12).contains(&pos);
 
         if std::fs::metadata("output/").is_err() {
             to_print = false;
@@ -419,8 +419,8 @@ impl DefaultForest<ForestLabel<GrammarLabel>> {
                 .collect();
         }
 
-        // if pos == 9 {
-        //     dbg!(&parents);
+        // if pos == 12 {
+        //     dbg!(num, &parents, pavi, label);
         // }
 
         let mut non_empty = false;
@@ -535,7 +535,6 @@ impl DefaultForest<ForestLabel<GrammarLabel>> {
                     parents,
                     reduction_info,
                     atom.query_reduction(label.label(), atom_child).unwrap(),
-                    is_empty_segment,
                     atom.trace(0, 3, atom_child)
                         .into_iter()
                         .flatten()
@@ -616,6 +615,10 @@ impl DefaultForest<ForestLabel<GrammarLabel>> {
                 unreachable!("the forest is wrongly planted");
             }
 
+            // if pos == 11 {
+            //     dbg!(root_label, node, edge, child);
+            // }
+
             // dbg!(node, edge, root_label, leaf_label);
             PaVi::Parent(node, edge, child)
         } else {