From 70309b9b1a48d856da03cbc93b08b622f99535a2 Mon Sep 17 00:00:00 2001
From: Daniel Burrows <dburrows@debian.org>
Date: Tue, 26 May 2009 07:49:09 -0700
Subject: Use the new box_expression to implement not_e.

---
 src/generic/problemresolver/incremental_expression.h | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

(limited to 'src/generic/problemresolver/incremental_expression.h')

diff --git a/src/generic/problemresolver/incremental_expression.h b/src/generic/problemresolver/incremental_expression.h
index 3284163f..4b6b73c1 100644
--- a/src/generic/problemresolver/incremental_expression.h
+++ b/src/generic/problemresolver/incremental_expression.h
@@ -542,14 +542,11 @@ public:
   void dump(std::ostream &out);
 };
 
-class not_e : public expression_container<bool>
+class not_e : public expression_box<bool>
 {
-  cwidget::util::ref_ptr<expression<bool> > child;
-
   not_e(const cwidget::util::ref_ptr<expression<bool> > &_child)
-    : child(_child)
+    : expression_box<bool>(_child)
   {
-    child->add_parent(this);
   }
 
 public:
-- 
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