From 402a113b567a96eef61946552b68df6ac6eb6712 Mon Sep 17 00:00:00 2001
From: aarne <aarne@cs.chalmers.se>
Date: Tue, 20 Jun 2006 08:38:44 +0000
Subject: made -fcfg default parser; added lexer textvars

---
 src/GF/Grammar/Macros.hs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/GF/Grammar/Macros.hs')

diff --git a/src/GF/Grammar/Macros.hs b/src/GF/Grammar/Macros.hs
index e7d073382..a3cad8bae 100644
--- a/src/GF/Grammar/Macros.hs
+++ b/src/GF/Grammar/Macros.hs
@@ -136,6 +136,10 @@ isRecursiveType t = errVal False $ do
   (cc,c) <- catSkeleton t -- thus recursivity on Cat level
   return $ any (== c) cc
 
+isHigherOrderType :: Type -> Bool
+isHigherOrderType t = errVal True $ do  -- pessimistic choice
+  co <- contextOfType t
+  return $ not $ null [x | (x,Prod _ _ _) <- co]
 
 contextOfType :: Type -> Err Context
 contextOfType typ = case typ of
-- 
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