properly support module imports from within modules.

2018-04-25 17:11:46 -06:00
parent 1415a5c98c
commit ed9689368d
4 changed files with 18 additions and 4 deletions
--- a/src/prolog/ast.rs
+++ b/src/prolog/ast.rs
@@ -216,9 +216,9 @@ pub trait SubModuleUser {
        }
    }

-    fn use_qualified_module(&mut self, submodule: &Module, exports: Vec<PredicateKey>) -> EvalSession
+    fn use_qualified_module(&mut self, submodule: &Module, exports: &Vec<PredicateKey>) -> EvalSession
    {
-        for (name, arity) in exports {
+        for (name, arity) in exports.iter().cloned() {
            if !submodule.module_decl.exports.contains(&(name.clone(), arity)) {
                continue;
            }