remove IsClause

2018-05-14 16:43:49 -06:00
parent 18e2e77600
commit 9a88d179d1
7 changed files with 20 additions and 36 deletions
--- a/src/prolog/machine/mod.rs
+++ b/src/prolog/machine/mod.rs
@@ -233,7 +233,7 @@ impl Machine {
            CodePtr::Local(LocalCodePtr::DirEntry(p, _)) =>
                Some(self.code[p].clone()),
            CodePtr::BuiltInClause(built_in, _) =>
-                Some(call_clause!(ClauseType::BuiltIn(built_in), built_in.arity(),
+                Some(call_clause!(ClauseType::BuiltIn(built_in.clone()), built_in.arity(),
                                  0, self.ms.last_call)),
            CodePtr::CallN(arity, _) =>
                Some(call_clause!(ClauseType::CallN, arity, 0, self.ms.last_call))