From 113df3addf3ae363de3ab423266c92c1a04c36d4 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Mon, 15 Dec 2008 15:54:12 -0500
Subject: [PATCH] Validate arguments to dependency mapper.

---
 src/mapper/dependency.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mapper/dependency.py b/src/mapper/dependency.py
index 396be4f..d4e7b87 100644
--- a/src/mapper/dependency.py
+++ b/src/mapper/dependency.py
@@ -20,6 +20,8 @@ class DependencyMapper(CombineMapper):
             include_lookups = True
             include_calls = True
 
+        assert include_calls in [True, False, "descend_args"]
+
         self.include_subscripts = include_subscripts
         self.include_lookups = include_lookups
         self.include_calls = include_calls
-- 
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