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 89e1fdc..69b791f 100644 (file)
--- a/compiler/basicTypes/RdrName.lhs
+++ b/compiler/basicTypes/RdrName.lhs
@@ -4,6 +4,7 @@
 %
 
 \begin{code}
+{-# LANGUAGE DeriveDataTypeable #-}
 
 -- |
 -- #name_types#
@@ -40,7 +41,7 @@ module RdrName (
        showRdrName,
 
        -- * Local mapping of 'RdrName' to 'Name.Name'
-       LocalRdrEnv, emptyLocalRdrEnv, extendLocalRdrEnv,
+       LocalRdrEnv, emptyLocalRdrEnv, extendLocalRdrEnv, extendLocalRdrEnvList,
        lookupLocalRdrEnv, lookupLocalRdrOcc, elemLocalRdrEnv,
 
        -- * Global mapping of 'RdrName' to 'GlobalRdrElt's
@@ -48,7 +49,7 @@ module RdrName (
        lookupGlobalRdrEnv, extendGlobalRdrEnv,
        pprGlobalRdrEnv, globalRdrEnvElts,
        lookupGRE_RdrName, lookupGRE_Name, getGRE_NameQualifier_maybes,
-        hideSomeUnquals, findLocalDupsRdrEnv,
+        hideSomeUnquals, findLocalDupsRdrEnv, pickGREs,
 
        -- ** Global 'RdrName' mapping elements: 'GlobalRdrElt', 'Provenance', 'ImportSpec'
        GlobalRdrElt(..), isLocalGRE, unQualOK, qualSpecOK, unQualSpecOK,
@@ -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}
 
 
@@ -316,8 +320,12 @@ type LocalRdrEnv = OccEnv Name
 emptyLocalRdrEnv :: LocalRdrEnv
 emptyLocalRdrEnv = emptyOccEnv
 
-extendLocalRdrEnv :: LocalRdrEnv -> [Name] -> LocalRdrEnv
-extendLocalRdrEnv env names
+extendLocalRdrEnv :: LocalRdrEnv -> Name -> LocalRdrEnv
+extendLocalRdrEnv env name
+  = extendOccEnv env (nameOccName name) name
+
+extendLocalRdrEnvList :: LocalRdrEnv -> [Name] -> LocalRdrEnv
+extendLocalRdrEnvList env names
   = extendOccEnvList env [(nameOccName n, n) | n <- names]
 
 lookupLocalRdrEnv :: LocalRdrEnv -> RdrName -> Maybe Name
@@ -424,10 +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
@@ -474,7 +481,7 @@ pickGREs rdr_name gres
     pick :: GlobalRdrElt -> Maybe GlobalRdrElt
     pick gre@(GRE {gre_prov = LocalDef, gre_name = n})         -- Local def
        | rdr_is_unqual                    = Just gre
-       | Just (mod,_) <- rdr_is_qual           -- Qualified name
+       | Just (mod,_) <- rdr_is_qual        -- Qualified name
        , Just n_mod <- nameModule_maybe n   -- Binder is External
        , mod == moduleName n_mod          = Just gre
        | otherwise                        = Nothing
@@ -511,9 +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
@@ -616,7 +623,7 @@ data ImpDeclSpec
                                    -- should be a Maybe PackageId here too.
        is_as       :: ModuleName, -- ^ Import alias, e.g. from @as M@ (or @Muggle@ if there is no @as@ clause)
        is_qual     :: Bool,       -- ^ Was this import qualified?
-       is_dloc     :: SrcSpan     -- ^ The location of the import declaration
+       is_dloc     :: SrcSpan     -- ^ The location of the entire import declaration
     }
 
 -- | Describes import info a particular Name