add db refs

2019-03-27 23:00:59 -06:00
parent e7bc01369a
commit 381ad12104
8 changed files with 146 additions and 79 deletions
--- a/src/prolog/machine/copier.rs
+++ b/src/prolog/machine/copier.rs
@@ -184,7 +184,7 @@ impl<T: CopierTarget> CopyTermState<T> {
                            self.copy_var(addr),
                        Addr::Str(addr) =>
                            self.copy_structure(addr),
-                        Addr::Con(_) =>
+                        Addr::Con(_) | Addr::DBRef(_) =>
                            self.scan += 1
                    }
            }