error.c: name_err_local_variables

* error.c (name_err_local_variables): new method
  NameError#local_variables for internal use only.
  [Feature #11777]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52942 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 11 insertions, 0 deletions

diff --git a/vm.c b/vm.c
index be9c7b2f93..d6c8f1b622 100644
--- a/vm.c
+++ b/vm.c
@@ -755,6 +755,17 @@ rb_vm_env_local_variables(const rb_env_t *env)
     return local_var_list_finish(&vars);
 }
 
+VALUE
+rb_iseq_local_variables(const rb_iseq_t *iseq)
+{
+    struct local_var_list vars;
+    local_var_list_init(&vars);
+    while (collect_local_variables_in_iseq(iseq, &vars)) {
+	iseq = iseq->body->parent_iseq;
+    }
+    return local_var_list_finish(&vars);
+}
+
 /* Proc */
 
 static inline VALUE