From: Matthijs Kooijman <m.kooijman@student.utwente.nl>
Date: Tue, 23 Jun 2009 12:27:48 +0000 (+0200)
Subject: Make subeverywhere complain for unknown expressions.
X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;ds=inline;h=d88c25bace830adf56cc5a3978b39aaf603353d3;hp=757befa0b3e9765ad3eca2990df8a790e187326c;p=matthijs%2Fmaster-project%2Fc%CE%BBash.git

Make subeverywhere complain for unknown expressions.

Previously, subeverywhere would silently leave it unmodified.
---

diff --git a/NormalizeTools.hs b/NormalizeTools.hs
index 400bf88..c20c583 100644
--- a/NormalizeTools.hs
+++ b/NormalizeTools.hs
@@ -142,9 +142,12 @@ subeverywhere trans (Case scrut b t alts) = do
     transalt (con, binders, expr) = do
       expr' <- trans expr
       return (con, binders, expr')
-      
 
-subeverywhere trans expr = return expr
+subeverywhere trans (Var x) = return $ Var x
+subeverywhere trans (Lit x) = return $ Lit x
+subeverywhere trans (Type x) = return $ Type x
+
+subeverywhere trans expr = error $ "NormalizeTools.subeverywhere Unsupported expression: " ++ show expr
 
 -- Apply the given transformation to all expressions, except for direct
 -- arguments of an application