From 16084f83c004eaada12b79f3d7b9242d7ee7c526 Mon Sep 17 00:00:00 2001
From: Marcell Vazquez-Chanlatte <mvc@linux.com>
Date: Wed, 1 Mar 2017 23:17:07 -0800
Subject: [PATCH] add default children function to ast elements

---
 stl/ast.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/stl/ast.py b/stl/ast.py
index 6ed256a..af1c3a0 100644
--- a/stl/ast.py
+++ b/stl/ast.py
@@ -36,6 +36,9 @@ class AST(object):
     def __invert__(self):
         return Neg(self)
 
+    def children(self):
+        return []
+
 
 class _Top(AST):
     def __repr__(self):