From cb4c86447a24577e18fc312b77f23241962e09bc Mon Sep 17 00:00:00 2001
From: Adam Chlipala <adamc@hcoop.net>
Date: Thu, 26 Jun 2008 09:51:28 -0400
Subject: Explify cfold

---
 src/expl_util.sml | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/expl_util.sml')

diff --git a/src/expl_util.sml b/src/expl_util.sml
index 23329f3e..809bc1e1 100644
--- a/src/expl_util.sml
+++ b/src/expl_util.sml
@@ -138,6 +138,12 @@ fun mapfoldB {kind = fk, con = fc, bind} =
                          S.map2 (mfc ctx c2,
                               fn c2' =>
                                  (CConcat (c1', c2'), loc)))
+              | CFold (k1, k2) =>
+                S.bind2 (mfk k1,
+                         fn k1' =>
+                            S.map2 (mfk k2,
+                                    fn k2' =>
+                                       (CFold (k1', k2'), loc)))
     in
         mfc
     end
-- 
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