Big tidy-up of deriving code

[ghc-hetmet.git] / compiler / ghci / Linker.lhs

diff --git a/compiler/ghci/Linker.lhs b/compiler/ghci/Linker.lhs
index 6073d6f..f06a728 100644 (file)
--- a/compiler/ghci/Linker.lhs
+++ b/compiler/ghci/Linker.lhs
@@ -14,11 +14,11 @@ necessary.
 \begin{code}
 {-# OPTIONS -optc-DNON_POSIX_SOURCE -#include "Linker.h" #-}
 
-module Linker ( HValue, showLinkerState,
+module Linker ( HValue, getHValue, showLinkerState,
                linkExpr, unload, extendLinkEnv, withExtendedLinkEnv,
                 extendLoadedPkgs,
-               linkPackages,initDynLinker
-               ,recoverDataCon
+               linkPackages,initDynLinker,
+                recoverDataCon
        ) where
 
 #include "HsVersions.h"
@@ -28,7 +28,6 @@ import ByteCodeLink
 import ByteCodeItbls
 import ByteCodeAsm
 import RtClosureInspect
-import Var
 import IfaceEnv
 import Config
 import OccName
@@ -63,7 +62,6 @@ import Control.Arrow    ( second )
 import Data.IORef
 import Data.List
 import Foreign.Ptr
-import GHC.Exts
 
 import System.IO
 import System.Directory
@@ -195,12 +193,16 @@ recoverDCInRTS a = do
                  helper [] = Nothing
                  helper x  = Just . second (drop 1) . break (==delim) $ x
               in unfoldr helper
-
-removeLeadingUnderscore = if cLeadingUnderscore=="YES" 
+          removeLeadingUnderscore = if cLeadingUnderscore=="YES" 
                                        then tail 
                                        else id
 
-
+getHValue :: Name -> IO (Maybe HValue)
+getHValue name = do
+    pls <- readIORef v_PersistentLinkerState
+    case lookupNameEnv (closure_env pls) name of
+      Just (_,x) -> return$ Just x
+      _          -> return Nothing
 
 withExtendedLinkEnv :: [(Name,HValue)] -> IO a -> IO a
 withExtendedLinkEnv new_env action
@@ -726,7 +728,7 @@ linkSomeBCOs toplevs_only ie ce_in de_in ul_bcos
         let de_additions = [(address, name) | (address, name) <- zip addresses names
                                             , not(address `elemAddressEnv` de_in) 
                            ]
-            de_out = extendAddressEnvList' de_in de_additions
+            de_out = extendAddressEnvList de_in de_additions
         return ( ce_out, de_out, hvals)
     where 
           goForRefs = getRefs []