Trim unused imports detected by new unused-import code

[ghc-hetmet.git] / compiler / ghci / RtClosureInspect.hs

diff --git a/compiler/ghci/RtClosureInspect.hs b/compiler/ghci/RtClosureInspect.hs
index 4996fdb..76ef9be 100644 (file)
--- a/compiler/ghci/RtClosureInspect.hs
+++ b/compiler/ghci/RtClosureInspect.hs
@@ -54,13 +54,18 @@ import TysWiredIn
 import DynFlags
 import Outputable
 import FastString
-import Panic
+-- import Panic
 
 import Constants        ( wORD_SIZE )
 
 import GHC.Arr          ( Array(..) )
 import GHC.Exts
-import GHC.IOBase ( IO(IO) )
+
+#if __GLASGOW_HASKELL__ >= 611
+import GHC.IO ( IO(..) )
+#else
+import GHC.IOBase ( IO(..) )
+#endif
 
 import Control.Monad
 import Data.Maybe
@@ -71,9 +76,8 @@ import qualified Data.Sequence as Seq
 import Data.Monoid
 import Data.Sequence hiding (null, length, index, take, drop, splitAt, reverse)
 import Foreign
-import System.IO.Unsafe
+-- import System.IO.Unsafe
 
-import System.IO
 ---------------------------------------------
 -- * A representation of semi evaluated Terms
 ---------------------------------------------
@@ -377,12 +381,14 @@ ppr_termM1 Term{}        = panic "ppr_termM1 - Term"
 ppr_termM1 RefWrap{}     = panic "ppr_termM1 - RefWrap"
 ppr_termM1 NewtypeWrap{} = panic "ppr_termM1 - NewtypeWrap"
 
-pprNewtypeWrap y p NewtypeWrap{ty=ty, wrapped_term=t} 
+pprNewtypeWrap y p NewtypeWrap{ty=ty, wrapped_term=t}
   | Just (tc,_) <- tcSplitTyConApp_maybe ty
   , ASSERT(isNewTyCon tc) True
   , Just new_dc <- tyConSingleDataCon_maybe tc = do 
-         real_term <- y max_prec t
-         return$ cparen (p >= app_prec) (ppr new_dc <+> real_term)
+         if integerDataConName == dataConName new_dc
+             then return $ text $ show $ (unsafeCoerce# $ val t :: Integer)
+             else do real_term <- y max_prec t
+                     return$ cparen (p >= app_prec) (ppr new_dc <+> real_term)
 pprNewtypeWrap _ _ _ = panic "pprNewtypeWrap"
 
 -------------------------------------------------------
@@ -427,16 +433,11 @@ cPprTermBase y =
   , ifTerm (isTyCon charTyCon   . ty) (coerceShow$ \(a::Char)->a)
   , ifTerm (isTyCon floatTyCon  . ty) (coerceShow$ \(a::Float)->a)
   , ifTerm (isTyCon doubleTyCon . ty) (coerceShow$ \(a::Double)->a)
-  , ifTerm (isIntegerTy         . ty) (coerceShow$ \(a::Integer)->a)
   ]
      where ifTerm pred f prec t@Term{}
                | pred t    = Just `liftM` f prec t
            ifTerm _ _ _ _  = return Nothing
 
-           isIntegerTy ty  = fromMaybe False $ do
-             (tc,_) <- tcSplitTyConApp_maybe ty 
-             return (tyConName tc == integerTyConName)
-
            isTupleTy ty    = fromMaybe False $ do 
              (tc,_) <- tcSplitTyConApp_maybe ty 
              return (isBoxedTupleTyCon tc)
@@ -854,7 +855,7 @@ improveRTTIType hsc_env _ty rtti_ty = runTR_maybe hsc_env $ do
     (ty_tvs,  _, _)   <- tcInstType return ty
     (ty_tvs', _, ty') <- tcInstType (mapM tcInstTyVar) ty
     (_, _, rtti_ty')  <- tcInstType (mapM tcInstTyVar) (sigmaType rtti_ty)
-    getLIE(boxyUnify rtti_ty' ty')
+    _ <- getLIE(boxyUnify rtti_ty' ty')
     tvs1_contents     <- zonkTcTyVars ty_tvs'
     let subst = (uncurry zipTopTvSubst . unzip)
                  [(tv,ty) | (tv,ty) <- zip ty_tvs tvs1_contents
@@ -1094,7 +1095,7 @@ congruenceNewtypes lhs rhs = go lhs rhs >>= \rhs' -> return (lhs,rhs')
                         text " in presence of newtype evidence " <> ppr new_tycon)
                vars <- mapM (newVar . tyVarKind) (tyConTyVars new_tycon)
                let ty' = mkTyConApp new_tycon vars
-               liftTcM (boxyUnify ty (repType ty'))
+               _ <- liftTcM (boxyUnify ty (repType ty'))
         -- assumes that reptype doesn't ^^^^ touch tyconApp args 
                return ty'