fix term_variables, add (^)/2 as an actual evaluable functor

2019-04-01 09:04:50 -06:00
parent 2240418a25
commit e3e0473b69
5 changed files with 16 additions and 5 deletions
--- a/src/prolog/machine/system_calls.rs
+++ b/src/prolog/machine/system_calls.rs
@@ -3,7 +3,6 @@ use prolog_parser::parser::{get_desc, get_clause_spec};
 use prolog_parser::tabled_rc::*;

 use prolog::clause_types::*;
-use prolog::heap_iter::*;
 use prolog::heap_print::*;
 use prolog::machine::copier::*;
 use prolog::machine::machine_errors::*;
@@ -1112,7 +1111,7 @@ impl MachineState {
                let mut vars = Vec::new();

                {
-                    let iter = HCPreOrderIterator::new(self, a1);
+                    let iter = self.acyclic_pre_order_iter(a1);

                    for item in iter {
                        match item {