X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2FbasicTypes%2FName.lhs;h=a2b42a278eb153468268c1cdc97ffe6130480b21;hp=cb6785afbe5e9dcd1c9ca9ea267e2b5ed0906196;hb=e2e0785eb7f4efd9f7791d913cdfdfd03148cd86;hpb=1631a17da7e82f937e7ddbb49c747bc97d84ca69

diff --git a/compiler/basicTypes/Name.lhs b/compiler/basicTypes/Name.lhs
index cb6785a..a2b42a2 100644
--- a/compiler/basicTypes/Name.lhs
+++ b/compiler/basicTypes/Name.lhs
@@ -37,7 +37,7 @@ module Name (
 	BuiltInSyntax(..),
 
 	-- ** Creating 'Name's
-	mkInternalName, mkSystemName,
+	mkInternalName, mkSystemName, mkDerivedInternalName, 
 	mkSystemVarName, mkSysTvName, 
 	mkFCallName, mkIPName,
         mkTickBoxOpName,
@@ -69,12 +69,15 @@ module Name (
 	module OccName
     ) where
 
+#include "Typeable.h"
+
 import {-# SOURCE #-} TypeRep( TyThing )
 
 import OccName
 import Module
 import SrcLoc
 import Unique
+import Util
 import Maybes
 import Binary
 import StaticFlags
@@ -83,6 +86,7 @@ import FastString
 import Outputable
 
 import Data.Array
+import Data.Data
 import Data.Word        ( Word32 )
 \end{code}
 
@@ -102,6 +106,7 @@ data Name = Name {
 --(note later when changing Int# -> FastInt: is that still true about UNPACK?)
 		n_loc  :: !SrcSpan	-- Definition site
 	    }
+    deriving Typeable
 
 -- NOTE: we make the n_loc field strict to eliminate some potential
 -- (and real!) space leaks, due to the fact that we don't look at
@@ -249,6 +254,11 @@ mkInternalName uniq occ loc = Name { n_uniq = getKeyFastInt uniq, n_sort = Inter
 	--	* for interface files we tidyCore first, which puts the uniques
 	--	  into the print name (see setNameVisibility below)
 
+mkDerivedInternalName :: (OccName -> OccName) -> Unique -> Name -> Name
+mkDerivedInternalName derive_occ uniq (Name { n_occ = occ, n_loc = loc })
+  = Name { n_uniq = getKeyFastInt uniq, n_sort = Internal
+         , n_occ = derive_occ occ, n_loc = loc }
+
 -- | Create a name which definitely originates in the given module
 mkExternalName :: Unique -> Module -> OccName -> SrcSpan -> Name
 mkExternalName uniq mod occ loc 
@@ -271,7 +281,7 @@ mkSystemVarName :: Unique -> FastString -> Name
 mkSystemVarName uniq fs = mkSystemName uniq (mkVarOccFS fs)
 
 mkSysTvName :: Unique -> FastString -> Name
-mkSysTvName uniq fs = mkSystemName uniq (mkOccNameFS tvName fs) 
+mkSysTvName uniq fs = mkSystemName uniq (mkOccNameFS tvName fs)
 
 -- | Make a name for a foreign call
 mkFCallName :: Unique -> String -> Name
@@ -353,6 +363,12 @@ instance Uniquable Name where
 
 instance NamedThing Name where
     getName n = n
+
+instance Data Name where
+  -- don't traverse?
+  toConstr _   = abstractConstr "Name"
+  gunfold _ _  = error "gunfold"
+  dataTypeOf _ = mkNoRepType "Name"
 \end{code}
 
 %************************************************************************
@@ -434,6 +450,9 @@ pprModulePrefix :: PprStyle -> Module -> OccName -> SDoc
 -- Print the "M." part of a name, based on whether it's in scope or not
 -- See Note [Printing original names] in HscTypes
 pprModulePrefix sty mod occ
+  | opt_SuppressModulePrefixes = empty
+  
+  | otherwise
   = case qualName sty mod occ of	           -- See Outputable.QualifyName:
       NameQual modname -> ppr modname <> dot       -- Name is in scope       
       NameNotInScope1  -> ppr mod <> dot           -- Not in scope
@@ -461,12 +480,14 @@ ppr_z_occ_name occ = ftext (zEncodeFS (occNameFS occ))
 -- Prints (if mod information is available) "Defined at <loc>" or 
 --  "Defined in <mod>" information for a Name.
 pprNameLoc :: Name -> SDoc
-pprNameLoc name
-  | isGoodSrcSpan loc = pprDefnLoc loc
-  | isInternalName name || isSystemName name 
-                      = ptext (sLit "<no location info>")
-  | otherwise         = ptext (sLit "Defined in ") <> ppr (nameModule name)
-  where loc = nameSrcSpan name
+pprNameLoc name = case nameSrcSpan name of
+                  RealSrcSpan s ->
+                      pprDefnLoc s
+                  UnhelpfulSpan _
+                   | isInternalName name || isSystemName name ->
+                      ptext (sLit "<no location info>")
+                   | otherwise ->
+                      ptext (sLit "Defined in ") <> ppr (nameModule name)
 \end{code}
 
 %************************************************************************