Use OPTIONS rather than OPTIONS_GHC for pragmas

[ghc-hetmet.git] / compiler / main / GHC.hs

diff --git a/compiler/main/GHC.hs b/compiler/main/GHC.hs
index a918d60..254302f 100644 (file)
--- a/compiler/main/GHC.hs
+++ b/compiler/main/GHC.hs
@@ -6,6 +6,13 @@
 --
 -- -----------------------------------------------------------------------------
 
+{-# OPTIONS -w #-}
+-- 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
+-- for details
+
 module GHC (
        -- * Initialisation
        Session,
@@ -84,7 +91,8 @@ module GHC (
         resume,
         Resume(resumeStmt, resumeThreadId, resumeBreakInfo, resumeSpan,
                resumeHistory, resumeHistoryIx),
-        History(historyBreakInfo), getHistorySpan,
+        History(historyBreakInfo, historyEnclosingDecl), 
+        GHC.getHistorySpan, getHistoryModule,
         getResumeContext,
         abandon, abandonAll,
         InteractiveEval.back,
@@ -93,7 +101,7 @@ module GHC (
         isModuleInterpreted,
        compileExpr, HValue, dynCompileExpr,
        lookupName,
-        obtainTerm, obtainTerm1,
+        GHC.obtainTerm, GHC.obtainTerm1, GHC.obtainTermB, reconstructType,
         modInfoModBreaks,
         ModBreaks(..), BreakIndex,
         BreakInfo(breakInfo_number, breakInfo_module),
@@ -538,9 +546,16 @@ load s@(Session ref) how_much
        -- graph is still retained in the Session.  We can tell which modules
        -- were successfully loaded by inspecting the Session's HPT.
        mb_graph <- depanal s [] False
-       case mb_graph of           
-          Just mod_graph -> load2 s how_much mod_graph 
+       case mb_graph of
+          Just mod_graph -> catchingFailure $ load2 s how_much mod_graph
           Nothing        -> return Failed
+    where catchingFailure f = f `Exception.catch` \e -> do
+              hsc_env <- readIORef ref
+              -- trac #1565 / test ghci021:
+              -- let bindings may explode if we try to use them after
+              -- failing to reload
+              writeIORef ref $! hsc_env{ hsc_IC = emptyInteractiveContext }
+              throw e
 
 load2 s@(Session ref) how_much mod_graph = do
         guessOutputFile s
@@ -1974,3 +1989,22 @@ findModule' hsc_env mod_name maybe_pkg =
                                        text "is not loaded"))
            err -> let msg = cannotFindModule dflags mod_name err in
                   throwDyn (CmdLineError (showSDoc msg))
+
+#ifdef GHCI
+getHistorySpan :: Session -> History -> IO SrcSpan
+getHistorySpan sess h = withSession sess $ \hsc_env -> 
+                          return$ InteractiveEval.getHistorySpan hsc_env h
+
+obtainTerm :: Session -> Bool -> Id -> IO Term
+obtainTerm sess force id = withSession sess $ \hsc_env ->
+                            InteractiveEval.obtainTerm hsc_env force id
+
+obtainTerm1 :: Session -> Bool -> Maybe Type -> a -> IO Term
+obtainTerm1 sess force mb_ty a = withSession sess $ \hsc_env ->
+                               InteractiveEval.obtainTerm1 hsc_env force mb_ty a
+
+obtainTermB :: Session -> Int -> Bool -> Id -> IO Term
+obtainTermB sess bound force id = withSession sess $ \hsc_env ->
+                            InteractiveEval.obtainTermB hsc_env bound force id
+
+#endif