X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FbasicTypes%2FRdrName.lhs;h=558ed16e0107b442c74a610fc90011623a880810;hb=3ad311341e189e574139921bd98449d7aed9ba26;hp=9dd0670a04b5ded3218b3c94f15feae1f8643ca2;hpb=ad94d40948668032189ad22a0ad741ac1f645f50;p=ghc-hetmet.git

diff --git a/compiler/basicTypes/RdrName.lhs b/compiler/basicTypes/RdrName.lhs
index 9dd0670..558ed16 100644
--- a/compiler/basicTypes/RdrName.lhs
+++ b/compiler/basicTypes/RdrName.lhs
@@ -8,7 +8,7 @@
 -- The above warning supression flag is a temporary kludge.
 -- While working on this module you are encouraged to remove it and fix
 -- any warnings in the module. See
---     http://hackage.haskell.org/trac/ghc/wiki/CodingStyle#Warnings
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
 -- for details
 
 module RdrName (
@@ -35,7 +35,8 @@ module RdrName (
 	GlobalRdrEnv, emptyGlobalRdrEnv, mkGlobalRdrEnv, plusGlobalRdrEnv, 
 	lookupGlobalRdrEnv, extendGlobalRdrEnv,
 	pprGlobalRdrEnv, globalRdrEnvElts,
-	lookupGRE_RdrName, lookupGRE_Name, hideSomeUnquals,
+	lookupGRE_RdrName, lookupGRE_Name, getGRE_NameQualifier_maybes,
+        hideSomeUnquals,
 
 	-- GlobalRdrElt, Provenance, ImportSpec
 	GlobalRdrElt(..), isLocalGRE, unQualOK, qualSpecOK, unQualSpecOK,
@@ -374,6 +375,11 @@ lookupGRE_Name env name
   = [ gre | gre <- lookupGlobalRdrEnv env (nameOccName name),
 	    gre_name gre == name ]
 
+getGRE_NameQualifier_maybes :: GlobalRdrEnv -> Name -> [Maybe [ModuleName]]
+getGRE_NameQualifier_maybes env
+  = map qualifier_maybe . map gre_prov . lookupGRE_Name env
+  where qualifier_maybe LocalDef       = Nothing
+        qualifier_maybe (Imported iss) = Just $ map (is_as . is_decl) iss 
 
 pickGREs :: RdrName -> [GlobalRdrElt] -> [GlobalRdrElt]
 -- Take a list of GREs which have the right OccName