add mrb_cv_get

include/mruby/variable.h

@@ -56,6 +56,7 @@ mrb_value mrb_obj_iv_inspect(mrb_state*, struct RObject*);
 mrb_sym mrb_class_sym(mrb_state *mrb, struct RClass *c, struct RClass *outer);
 mrb_value mrb_mod_class_variables(mrb_state*, mrb_value);
 mrb_value mrb_mod_cv_get(mrb_state *mrb, struct RClass * c, mrb_sym sym);
+mrb_value mrb_cv_get(mrb_state *mrb, mrb_value mod, mrb_sym sym);
 
 /* GC functions */
 void mrb_gc_mark_gv(mrb_state*);

src/variable.c

@@ -689,6 +689,12 @@ mrb_mod_cv_get(mrb_state *mrb, struct RClass * c, mrb_sym sym)
   return mrb_nil_value();
 }
 
+mrb_value
+mrb_cv_get(mrb_state *mrb, mrb_value mod, mrb_sym sym)
+{
+  return mrb_mod_cv_get(mrb, mrb_class_ptr(mod), sym);
+}
+
 mrb_value
 mrb_vm_cv_get(mrb_state *mrb, mrb_sym sym)
 {