# HG changeset patch
# User Adam Chlipala <adam@chlipala.net>
# Date 1335031563 14400
# Node ID dd12d6d9e9a7dcf99438f6e418204ee4b04abbdf
# Parent  16ee7ff7f1198b76e5b46c3b558f8d0aae7fb46d
Add another rule to simplify record concatenations for pretty-printing

diff -r 16ee7ff7f119 -r dd12d6d9e9a7 src/elab_ops.sml
--- a/src/elab_ops.sml	Sat Apr 21 13:57:10 2012 -0400
+++ b/src/elab_ops.sml	Sat Apr 21 14:06:03 2012 -0400
@@ -1,4 +1,4 @@
-(* Copyright (c) 2008, Adam Chlipala
+(* Copyright (c) 2008, 2012, Adam Chlipala
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -482,6 +482,7 @@
               | ((CRecord (_, []), _), _) => c2
               | ((CConcat (c11, c12), loc), _) => reduceCon env (CConcat (c11, (CConcat (c12, c2), loc)), loc)
               | (_, (CRecord (_, []), _)) => c1
+              | ((CRecord (k, xcs1), loc), (CConcat ((CRecord (_, xcs2), _), c2'), _)) => (CConcat ((CRecord (k, xcs1 @ xcs2), loc), c2'), loc)
               | _ => (CConcat (c1, c2), loc)
         end
       | CMap _ => cAll
diff -r 16ee7ff7f119 -r dd12d6d9e9a7 tests/simplify.ur
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/simplify.ur	Sat Apr 21 14:06:03 2012 -0400
@@ -0,0 +1,1 @@
+fun main [r] (r : $([A = int] ++ ([B = float] ++ r))) : $([A = float] ++ ([B = int] ++ r)) = r