GF/src is now for 2.9, and the new sources are in src-3.0 - keep it this way until the release of GF 3

src-3.0/GF/Canon/PrExp.hs

@@ -0,0 +1,46 @@
+----------------------------------------------------------------------
+-- |
+-- Module      : PrExp
+-- Maintainer  : AR
+-- Stability   : (stable)
+-- Portability : (portable)
+--
+-- > CVS $Date: 2005/04/21 16:21:28 $ 
+-- > CVS $Author: bringert $
+-- > CVS $Revision: 1.5 $
+--
+-- print trees without qualifications
+-----------------------------------------------------------------------------
+
+module GF.Canon.PrExp (prExp) where
+
+import GF.Canon.AbsGFC
+import GF.Canon.GFC
+
+import GF.Data.Operations
+
+prExp :: Exp -> String
+prExp e = case e of
+  EApp f a   -> pr1 f +++ pr2 a
+  EAbsR x b  -> "\\" ++ prtt x +++ "->" +++ prExp b
+  EAbs x _ b -> prExp $ EAbsR x b
+  EProd x a b -> "(\\" ++ prtt x +++ ":" +++ prExp a ++ ")" +++ "->" +++ prExp b
+  EAtomR a   -> prAtom a
+  EAtom a _  -> prAtom a
+  _ -> prtt e
+ where
+   pr1 e = case e of
+     EAbsR _ _   -> prParenth $ prExp e
+     EAbs _ _ _  -> prParenth $ prExp e
+     EProd _ _ _ -> prParenth $ prExp e
+     _ -> prExp e
+   pr2 e = case e of
+     EApp _ _ -> prParenth $ prExp e
+     _ -> pr1 e
+
+prAtom a = case a of
+  AC c -> prCIdent c
+  AD c -> prCIdent c
+  _ -> prtt a
+
+prCIdent (CIQ _ c) = prtt c