Add Data and Typeable instances to HsSyn

[ghc-hetmet.git] / compiler / basicTypes / RdrName.lhs

diff --git a/compiler/basicTypes/RdrName.lhs b/compiler/basicTypes/RdrName.lhs
index ed6bd43..69b791f 100644 (file)
--- a/compiler/basicTypes/RdrName.lhs
+++ b/compiler/basicTypes/RdrName.lhs
@@ -4,6 +4,7 @@
 %
 
 \begin{code}
+{-# LANGUAGE DeriveDataTypeable #-}
 
 -- |
 -- #name_types#
@@ -67,6 +68,8 @@ import SrcLoc
 import FastString
 import Outputable
 import Util
+
+import Data.Data
 \end{code}
 
 %************************************************************************
@@ -107,6 +110,7 @@ data RdrName
        --  (2) By Template Haskell, when TH has generated a unique name
        --
        -- Such a 'RdrName' can be created by using 'getRdrName' on a 'Name'
+  deriving (Data, Typeable)
 \end{code}
 
 
@@ -428,10 +432,9 @@ lookupGlobalRdrEnv env occ_name = case lookupOccEnv env occ_name of
                                        Just gres -> gres
 
 extendGlobalRdrEnv :: GlobalRdrEnv -> GlobalRdrElt -> GlobalRdrEnv
-extendGlobalRdrEnv env gre = extendOccEnv_C add env occ [gre]
+extendGlobalRdrEnv env gre = extendOccEnv_Acc (:) singleton env occ gre
   where
     occ = nameOccName (gre_name gre)
-    add gres _ = gre:gres
 
 lookupGRE_RdrName :: RdrName -> GlobalRdrEnv -> [GlobalRdrElt]
 lookupGRE_RdrName rdr_name env
@@ -515,9 +518,9 @@ mkGlobalRdrEnv :: [GlobalRdrElt] -> GlobalRdrEnv
 mkGlobalRdrEnv gres
   = foldr add emptyGlobalRdrEnv gres
   where
-    add gre env = extendOccEnv_C (foldr insertGRE) env 
-                                (nameOccName (gre_name gre)) 
-                                [gre]
+    add gre env = extendOccEnv_Acc insertGRE singleton env 
+                                  (nameOccName (gre_name gre)) 
+                                  gre
 
 findLocalDupsRdrEnv :: GlobalRdrEnv -> [OccName] -> (GlobalRdrEnv, [[Name]])
 -- ^ For each 'OccName', see if there are multiple local definitions