X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fmain%2FGHC.hs;h=5f78c3e9d5dae194c5e3d63c2c51338abb6b1729;hp=c786cbba1616b4bde39e3d77be45cdaca4e6d695;hb=cdce647711c0f46f5799b24de087622cb77e647f;hpb=b00b5bc04ff36a551552470060064f0b7d84ca30 diff --git a/compiler/main/GHC.hs b/compiler/main/GHC.hs index c786cbb..5f78c3e 100644 --- a/compiler/main/GHC.hs +++ b/compiler/main/GHC.hs @@ -14,7 +14,8 @@ module GHC ( newSession, -- * Flags and settings - DynFlags(..), DynFlag(..), Severity(..), GhcMode(..), HscTarget(..), dopt, + DynFlags(..), DynFlag(..), Severity(..), HscTarget(..), dopt, + GhcMode(..), GhcLink(..), parseDynamicFlags, getSessionDynFlags, setSessionDynFlags, @@ -79,8 +80,11 @@ module GHC ( RunResult(..), runStmt, showModule, + isModuleInterpreted, compileExpr, HValue, dynCompileExpr, lookupName, + obtainTerm, obtainTerm1, + modInfoModBreaks, #endif -- * Abstract syntax elements @@ -136,7 +140,8 @@ module GHC ( instanceDFunId, pprInstance, pprInstanceHdr, -- ** Types and Kinds - Type, dropForAlls, splitForAllTys, funResultTy, pprParendType, + Type, dropForAlls, splitForAllTys, funResultTy, + pprParendType, pprTypeApp, Kind, PredType, ThetaType, pprThetaArrow, @@ -174,9 +179,7 @@ module GHC ( #include "HsVersions.h" #ifdef GHCI -import qualified Linker -import Data.Dynamic ( Dynamic ) -import Linker ( HValue, extendLinkEnv ) +import RtClosureInspect ( cvObtainTerm, Term ) import TcRnDriver ( tcRnLookupRdrName, tcRnGetInfo, tcRnLookupName, getModuleExports ) import RdrName ( plusGlobalRdrEnv, Provenance(..), @@ -185,8 +188,18 @@ import RdrName ( plusGlobalRdrEnv, Provenance(..), import HscMain ( hscParseIdentifier, hscStmt, hscTcExpr, hscKcType ) import Name ( nameOccName ) import Type ( tidyType ) +import Var ( varName ) import VarEnv ( emptyTidyEnv ) -import GHC.Exts ( unsafeCoerce# ) +import GHC.Exts ( unsafeCoerce#, Ptr ) +import Foreign.StablePtr( deRefStablePtr, castPtrToStablePtr, StablePtr, newStablePtr, freeStablePtr ) +import Foreign ( poke ) +import Data.Maybe ( fromMaybe) +import qualified Linker + +import Data.Dynamic ( Dynamic ) +import Linker ( HValue, getHValue, extendLinkEnv ) + +import ByteCodeInstr (BreakInfo) #endif import Packages ( initPackages ) @@ -197,7 +210,7 @@ import RdrName ( GlobalRdrEnv, GlobalRdrElt(..), RdrName(..), import HsSyn import Type ( Kind, Type, dropForAlls, PredType, ThetaType, pprThetaArrow, pprParendType, splitForAllTys, - funResultTy ) + pprTypeApp, funResultTy ) import Id ( Id, idType, isImplicitId, isDeadBinder, isExportedId, isLocalId, isGlobalId, isRecordSelector, recordSelectorFieldLabel, @@ -231,7 +244,7 @@ import SysTools ( initSysTools, cleanTempFiles, cleanTempFilesExcept, cleanTempDirs ) import Module import UniqFM -import PackageConfig ( PackageId, stringToPackageId ) +import PackageConfig ( PackageId, stringToPackageId, mainPackageId ) import FiniteMap import Panic import Digraph @@ -315,9 +328,8 @@ defaultErrorHandler dflags inner = defaultCleanupHandler :: DynFlags -> IO a -> IO a defaultCleanupHandler dflags inner = -- make sure we clean up after ourselves - later (unless (dopt Opt_KeepTmpFiles dflags) $ - do cleanTempFiles dflags - cleanTempDirs dflags + later (do cleanTempFiles dflags + cleanTempDirs dflags ) -- exceptions will be blocked while we clean the temporary files, -- so there shouldn't be any difficulty if we receive further @@ -325,20 +337,24 @@ defaultCleanupHandler dflags inner = inner +#if defined(GHCI) +GLOBAL_VAR(v_bkptLinkEnv, [], [(Name, HValue)]) + -- stores the current breakpoint handler to help setContext to + -- restore it after a context change +#endif + -- | Starts a new session. A session consists of a set of loaded -- modules, a set of options (DynFlags), and an interactive context. --- ToDo: GhcMode should say "keep typechecked code" and\/or "keep renamed --- code". -newSession :: GhcMode -> Maybe FilePath -> IO Session -newSession mode mb_top_dir = do +newSession :: Maybe FilePath -> IO Session +newSession mb_top_dir = do -- catch ^C main_thread <- myThreadId - putMVar interruptTargetThread [main_thread] + modifyMVar_ interruptTargetThread (return . (main_thread :)) installSignalHandlers dflags0 <- initSysTools mb_top_dir defaultDynFlags dflags <- initDynFlags dflags0 - env <- newHscEnv dflags{ ghcMode=mode } + env <- newHscEnv dflags ref <- newIORef env return (Session ref) @@ -499,10 +515,9 @@ depanal (Session ref) excluded_mods allow_dup_roots = do old_graph = hsc_mod_graph hsc_env showPass dflags "Chasing dependencies" - when (gmode == BatchCompile) $ - debugTraceMsg dflags 2 (hcat [ - text "Chasing modules from: ", - hcat (punctuate comma (map pprTarget targets))]) + debugTraceMsg dflags 2 (hcat [ + text "Chasing modules from: ", + hcat (punctuate comma (map pprTarget targets))]) r <- downsweep hsc_env old_graph excluded_mods allow_dup_roots case r of @@ -581,8 +596,7 @@ load2 s@(Session ref) how_much mod_graph = do let -- check the stability property for each module. stable_mods@(stable_obj,stable_bco) - | BatchCompile <- ghci_mode = ([],[]) - | otherwise = checkStability hpt1 mg2_with_srcimps all_home_mods + = checkStability hpt1 mg2_with_srcimps all_home_mods -- prune bits of the HPT which are definitely redundant now, -- to save space. @@ -690,13 +704,16 @@ load2 s@(Session ref) how_much mod_graph = do a_root_is_Main = any ((==main_mod).ms_mod) mod_graph do_linking = a_root_is_Main || no_hs_main - when (ghci_mode == BatchCompile && isJust ofile && not do_linking) $ - debugTraceMsg dflags 1 (text ("Warning: output was redirected with -o, " ++ - "but no output will be generated\n" ++ - "because there is no " ++ moduleNameString (moduleName main_mod) ++ " module.")) + when (ghcLink dflags == LinkBinary + && isJust ofile && not do_linking) $ + debugTraceMsg dflags 1 $ + text ("Warning: output was redirected with -o, " ++ + "but no output will be generated\n" ++ + "because there is no " ++ + moduleNameString (moduleName main_mod) ++ " module.") -- link everything together - linkresult <- link ghci_mode dflags do_linking (hsc_HPT hsc_env1) + linkresult <- link (ghcLink dflags) dflags do_linking (hsc_HPT hsc_env1) loadFinish Succeeded linkresult ref hsc_env1 @@ -726,7 +743,7 @@ load2 s@(Session ref) how_much mod_graph = do (eltsUFM (hsc_HPT hsc_env))) do -- Link everything together - linkresult <- link ghci_mode dflags False hpt4 + linkresult <- link (ghcLink dflags) dflags False hpt4 let hsc_env4 = hsc_env1{ hsc_HPT = hpt4 } loadFinish Failed linkresult ref hsc_env4 @@ -824,6 +841,9 @@ checkModule session@(Session ref) mod = do md_exports details, minf_rdr_env = Just rdr_env, minf_instances = md_insts details +#ifdef GHCI + ,minf_modBreaks = emptyModBreaks +#endif } return (Just (CheckedModule { parsedSource = parsed, @@ -836,15 +856,13 @@ checkModule session@(Session ref) mod = do unload :: HscEnv -> [Linkable] -> IO () unload hsc_env stable_linkables -- Unload everthing *except* 'stable_linkables' - = case ghcMode (hsc_dflags hsc_env) of - BatchCompile -> return () - JustTypecheck -> return () + = case ghcLink (hsc_dflags hsc_env) of #ifdef GHCI - Interactive -> Linker.unload (hsc_dflags hsc_env) stable_linkables + LinkInMemory -> Linker.unload (hsc_dflags hsc_env) stable_linkables #else - Interactive -> panic "unload: no interpreter" + LinkInMemory -> panic "unload: no interpreter" #endif - other -> panic "unload: strange mode" + other -> return () -- ----------------------------------------------------------------------------- -- checkStability @@ -861,9 +879,6 @@ unload hsc_env stable_linkables -- Unload everthing *except* 'stable_linkables' module. So we need to know that we will definitely not be recompiling any of these modules, and we can use the object code. - NB. stability is of no importance to BatchCompile at all, only Interactive. - (ToDo: what about JustTypecheck?) - The stability check is as follows. Both stableObject and stableBCO are used during the upsweep phase later. @@ -882,7 +897,7 @@ unload hsc_env stable_linkables -- Unload everthing *except* 'stable_linkables' These properties embody the following ideas: - - if a module is stable: + - if a module is stable, then: - if it has been compiled in a previous pass (present in HPT) then it does not need to be compiled or re-linked. - if it has not been compiled in a previous pass, @@ -1093,95 +1108,133 @@ upsweep_mod :: HscEnv -> IO (Maybe HomeModInfo) -- Nothing => Failed upsweep_mod hsc_env old_hpt (stable_obj, stable_bco) summary mod_index nmods - = do - let - this_mod_name = ms_mod_name summary + = let + this_mod_name = ms_mod_name summary this_mod = ms_mod summary mb_obj_date = ms_obj_date summary obj_fn = ml_obj_file (ms_location summary) hs_date = ms_hs_date summary + is_stable_obj = this_mod_name `elem` stable_obj + is_stable_bco = this_mod_name `elem` stable_bco + + old_hmi = lookupUFM old_hpt this_mod_name + + -- We're using the dflags for this module now, obtained by + -- applying any options in its LANGUAGE & OPTIONS_GHC pragmas. + dflags = ms_hspp_opts summary + prevailing_target = hscTarget (hsc_dflags hsc_env) + local_target = hscTarget dflags + + -- If OPTIONS_GHC contains -fasm or -fvia-C, be careful that + -- we don't do anything dodgy: these should only work to change + -- from -fvia-C to -fasm and vice-versa, otherwise we could + -- end up trying to link object code to byte code. + target = if prevailing_target /= local_target + && (not (isObjectTarget prevailing_target) + || not (isObjectTarget local_target)) + then prevailing_target + else local_target + + -- store the corrected hscTarget into the summary + summary' = summary{ ms_hspp_opts = dflags { hscTarget = target } } + + -- The old interface is ok if + -- a) we're compiling a source file, and the old HPT + -- entry is for a source file + -- b) we're compiling a hs-boot file + -- Case (b) allows an hs-boot file to get the interface of its + -- real source file on the second iteration of the compilation + -- manager, but that does no harm. Otherwise the hs-boot file + -- will always be recompiled + + mb_old_iface + = case old_hmi of + Nothing -> Nothing + Just hm_info | isBootSummary summary -> Just iface + | not (mi_boot iface) -> Just iface + | otherwise -> Nothing + where + iface = hm_iface hm_info + compile_it :: Maybe Linkable -> IO (Maybe HomeModInfo) compile_it = upsweep_compile hsc_env old_hpt this_mod_name - summary mod_index nmods - - case ghcMode (hsc_dflags hsc_env) of - BatchCompile -> - case () of - -- Batch-compilating is easy: just check whether we have - -- an up-to-date object file. If we do, then the compiler - -- needs to do a recompilation check. - _ | Just obj_date <- mb_obj_date, obj_date >= hs_date -> do - linkable <- - findObjectLinkable this_mod obj_fn obj_date - compile_it (Just linkable) - - | otherwise -> - compile_it Nothing - - interactive -> - case () of - _ | is_stable_obj, isJust old_hmi -> - return old_hmi + summary' mod_index nmods mb_old_iface + + compile_it_discard_iface + = upsweep_compile hsc_env old_hpt this_mod_name + summary' mod_index nmods Nothing + + in + case target of + + _any + -- Regardless of whether we're generating object code or + -- byte code, we can always use an existing object file + -- if it is *stable* (see checkStability). + | is_stable_obj, isJust old_hmi -> + return old_hmi -- object is stable, and we have an entry in the -- old HPT: nothing to do - | is_stable_obj, isNothing old_hmi -> do - linkable <- - findObjectLinkable this_mod obj_fn + | is_stable_obj, isNothing old_hmi -> do + linkable <- findObjectLinkable this_mod obj_fn (expectJust "upseep1" mb_obj_date) - compile_it (Just linkable) + compile_it (Just linkable) -- object is stable, but we need to load the interface -- off disk to make a HMI. - | is_stable_bco -> - ASSERT(isJust old_hmi) -- must be in the old_hpt - return old_hmi + HscInterpreted + | is_stable_bco -> + ASSERT(isJust old_hmi) -- must be in the old_hpt + return old_hmi -- BCO is stable: nothing to do - | Just hmi <- old_hmi, - Just l <- hm_linkable hmi, not (isObjectLinkable l), - linkableTime l >= ms_hs_date summary -> - compile_it (Just l) + | Just hmi <- old_hmi, + Just l <- hm_linkable hmi, not (isObjectLinkable l), + linkableTime l >= ms_hs_date summary -> + compile_it (Just l) -- we have an old BCO that is up to date with respect -- to the source: do a recompilation check as normal. - | otherwise -> - compile_it Nothing + | otherwise -> + compile_it Nothing -- no existing code at all: we must recompile. - where - is_stable_obj = this_mod_name `elem` stable_obj - is_stable_bco = this_mod_name `elem` stable_bco - old_hmi = lookupUFM old_hpt this_mod_name + -- When generating object code, if there's an up-to-date + -- object file on the disk, then we can use it. + -- However, if the object file is new (compared to any + -- linkable we had from a previous compilation), then we + -- must discard any in-memory interface, because this + -- means the user has compiled the source file + -- separately and generated a new interface, that we must + -- read from the disk. + -- + obj | isObjectTarget obj, + Just obj_date <- mb_obj_date, obj_date >= hs_date -> do + case old_hmi of + Just hmi + | Just l <- hm_linkable hmi, + isObjectLinkable l && linkableTime l == obj_date + -> compile_it (Just l) + _otherwise -> do + linkable <- findObjectLinkable this_mod obj_fn obj_date + compile_it_discard_iface (Just linkable) + + _otherwise -> + compile_it Nothing + -- Run hsc to compile a module upsweep_compile hsc_env old_hpt this_mod summary mod_index nmods - mb_old_linkable = do - let - -- The old interface is ok if it's in the old HPT - -- a) we're compiling a source file, and the old HPT - -- entry is for a source file - -- b) we're compiling a hs-boot file - -- Case (b) allows an hs-boot file to get the interface of its - -- real source file on the second iteration of the compilation - -- manager, but that does no harm. Otherwise the hs-boot file - -- will always be recompiled - - mb_old_iface - = case lookupUFM old_hpt this_mod of - Nothing -> Nothing - Just hm_info | isBootSummary summary -> Just iface - | not (mi_boot iface) -> Just iface - | otherwise -> Nothing - where - iface = hm_iface hm_info - - compresult <- compile hsc_env summary mb_old_linkable mb_old_iface + mb_old_iface + mb_old_linkable + = do + compresult <- compile hsc_env summary mb_old_linkable mb_old_iface mod_index nmods - case compresult of + case compresult of -- Compilation failed. Compile may still have updated the PCS, tho. CompErrs -> return Nothing @@ -1733,6 +1786,9 @@ data ModuleInfo = ModuleInfo { minf_exports :: NameSet, -- ToDo, [AvailInfo] like ModDetails? minf_rdr_env :: Maybe GlobalRdrEnv, -- Nothing for a compiled/package mod minf_instances :: [Instance] +#ifdef GHCI + ,minf_modBreaks :: ModBreaks +#endif -- ToDo: this should really contain the ModIface too } -- We don't want HomeModInfo here, because a ModuleInfo applies @@ -1756,22 +1812,23 @@ getModuleInfo s mdl = withSession s $ \hsc_env -> do getPackageModuleInfo :: HscEnv -> Module -> IO (Maybe ModuleInfo) getPackageModuleInfo hsc_env mdl = do #ifdef GHCI - (_msgs, mb_names) <- getModuleExports hsc_env mdl - case mb_names of + (_msgs, mb_avails) <- getModuleExports hsc_env mdl + case mb_avails of Nothing -> return Nothing - Just names -> do + Just avails -> do eps <- readIORef (hsc_EPS hsc_env) let + names = availsToNameSet avails pte = eps_PTE eps - n_list = nameSetToList names - tys = [ ty | name <- n_list, + tys = [ ty | name <- concatMap availNames avails, Just ty <- [lookupTypeEnv pte name] ] -- return (Just (ModuleInfo { minf_type_env = mkTypeEnv tys, minf_exports = names, minf_rdr_env = Just $! nameSetToGlobalRdrEnv names (moduleName mdl), - minf_instances = error "getModuleInfo: instances for package module unimplemented" + minf_instances = error "getModuleInfo: instances for package module unimplemented", + minf_modBreaks = emptyModBreaks })) #else -- bogusly different for non-GHCI (ToDo) @@ -1788,6 +1845,9 @@ getHomeModuleInfo hsc_env mdl = minf_exports = availsToNameSet (md_exports details), minf_rdr_env = mi_globals $! hm_iface hmi, minf_instances = md_insts details +#ifdef GHCI + ,minf_modBreaks = md_modBreaks details +#endif })) -- | The list of top-level entities defined in a module @@ -1821,6 +1881,10 @@ modInfoLookupName s minf name = withSession s $ \hsc_env -> do return $! lookupType (hsc_dflags hsc_env) (hsc_HPT hsc_env) (eps_PTE eps) name +#ifdef GHCI +modInfoModBreaks = minf_modBreaks +#endif + isDictonaryId :: Id -> Bool isDictonaryId id = case tcSplitSigmaTy (idType id) of { (tvs, theta, tau) -> isDictTy tau } @@ -1886,7 +1950,7 @@ findModule' hsc_env mod_name maybe_pkg = case lookupUFM hpt mod_name of Just mod_info -> return (mi_module (hm_iface mod_info)) _not_a_home_module -> do - res <- findImportedModule hsc_env mod_name Nothing + res <- findImportedModule hsc_env mod_name maybe_pkg case res of Found _ m | modulePackageId m /= this_pkg -> return m | otherwise -> throwDyn (CmdLineError (showSDoc $ @@ -1906,7 +1970,7 @@ setContext :: Session -> [Module] -- entire top level scope of these modules -> [Module] -- exports only of these modules -> IO () -setContext (Session ref) toplev_mods export_mods = do +setContext sess@(Session ref) toplev_mods export_mods = do hsc_env <- readIORef ref let old_ic = hsc_IC hsc_env hpt = hsc_HPT hsc_env @@ -1918,15 +1982,14 @@ setContext (Session ref) toplev_mods export_mods = do ic_exports = export_mods, ic_rn_gbl_env = all_env }} - -- Make a GlobalRdrEnv based on the exports of the modules only. mkExportEnv :: HscEnv -> [Module] -> IO GlobalRdrEnv mkExportEnv hsc_env mods = do stuff <- mapM (getModuleExports hsc_env) mods let (_msgs, mb_name_sets) = unzip stuff - gres = [ nameSetToGlobalRdrEnv name_set (moduleName mod) - | (Just name_set, mod) <- zip mb_name_sets mods ] + gres = [ nameSetToGlobalRdrEnv (availsToNameSet avails) (moduleName mod) + | (Just avails, mod) <- zip mb_name_sets mods ] -- return $! foldr plusGlobalRdrEnv emptyGlobalRdrEnv gres @@ -2088,14 +2151,22 @@ data RunResult = RunOk [Name] -- ^ names bound by this evaluation | RunFailed -- ^ statement failed compilation | RunException Exception -- ^ statement raised an exception + | forall a . RunBreak a ThreadId BreakInfo (IO RunResult) + +data Status a + = Break RunResult -- ^ the computation hit a breakpoint + | Complete (Either Exception a) -- ^ the computation completed with either an exception or a value --- | Run a statement in the current interactive context. Statemenet +-- | Run a statement in the current interactive context. Statement -- may bind multple values. runStmt :: Session -> String -> IO RunResult runStmt (Session ref) expr = do hsc_env <- readIORef ref + breakMVar <- newEmptyMVar -- wait on this when we hit a breakpoint + statusMVar <- newEmptyMVar -- wait on this when a computation is running + -- Turn off -fwarn-unused-bindings when running a statement, to hide -- warnings about the implicit bindings we introduce. let dflags' = dopt_unset (hsc_dflags hsc_env) Opt_WarnUnusedBinds @@ -2107,36 +2178,58 @@ runStmt (Session ref) expr Nothing -> return RunFailed Just (new_hsc_env, names, hval) -> do - let thing_to_run = unsafeCoerce# hval :: IO [HValue] - either_hvals <- sandboxIO thing_to_run - + -- resume says what to do when we continue execution from a breakpoint + -- onBreakAction says what to do when we hit a breakpoint + -- they are mutually recursive, hence the strange use tuple let-binding + let (resume, onBreakAction) + = ( do stablePtr <- newStablePtr onBreakAction + poke breakPointIOAction stablePtr + putMVar breakMVar () + status <- takeMVar statusMVar + switchOnStatus ref new_hsc_env names status + , \ids apStack -> do + tid <- myThreadId + putMVar statusMVar (Break (RunBreak apStack tid ids resume)) + takeMVar breakMVar + ) + + -- set the onBreakAction to be performed when we hit a breakpoint + -- this is visible in the Byte Code Interpreter, thus it is a global + -- variable, implemented with stable pointers + stablePtr <- newStablePtr onBreakAction + poke breakPointIOAction stablePtr + + let thing_to_run = unsafeCoerce# hval :: IO [HValue] + status <- sandboxIO statusMVar thing_to_run + freeStablePtr stablePtr -- be careful not to leak stable pointers! + switchOnStatus ref new_hsc_env names status + where + switchOnStatus ref hs_env names status = + case status of + -- did we hit a breakpoint or did we complete? + (Break result) -> return result + (Complete either_hvals) -> case either_hvals of - Left e -> do - -- on error, keep the *old* interactive context, - -- so that 'it' is not bound to something - -- that doesn't exist. - return (RunException e) - + Left e -> return (RunException e) Right hvals -> do - -- Get the newly bound things, and bind them. - -- Don't need to delete any shadowed bindings; - -- the new ones override the old ones. extendLinkEnv (zip names hvals) - - writeIORef ref new_hsc_env + writeIORef ref hs_env return (RunOk names) + +-- this points to the IO action that is executed when a breakpoint is hit +foreign import ccall "&breakPointIOAction" + breakPointIOAction :: Ptr (StablePtr (a -> BreakInfo -> IO ())) -- When running a computation, we redirect ^C exceptions to the running -- thread. ToDo: we might want a way to continue even if the target -- thread doesn't die when it receives the exception... "this thread -- is not responding". -sandboxIO :: IO a -> IO (Either Exception a) -sandboxIO thing = do - m <- newEmptyMVar +sandboxIO :: MVar (Status a) -> IO a -> IO (Status a) +sandboxIO statusMVar thing = do ts <- takeMVar interruptTargetThread - child <- forkIO (do res <- Exception.try thing; putMVar m res) + child <- forkIO (do res <- Exception.try thing; putMVar statusMVar (Complete res)) putMVar interruptTargetThread (child:ts) - takeMVar m `finally` modifyMVar_ interruptTargetThread (return.tail) + takeMVar statusMVar `finally` modifyMVar_ interruptTargetThread (return.tail) {- -- This version of sandboxIO runs the expression in a completely new @@ -2163,17 +2256,36 @@ sandboxIO thing = do foreign import "rts_evalStableIO" {- safe -} rts_evalStableIO :: StablePtr (IO a) -> Ptr (StablePtr a) -> IO CInt -- more informative than the C type! + +XXX the type of rts_evalStableIO no longer matches the above + -} + ----------------------------------------------------------------------------- -- show a module and it's source/object filenames showModule :: Session -> ModSummary -> IO String -showModule s mod_summary = withSession s $ \hsc_env -> do +showModule s mod_summary = withSession s $ \hsc_env -> + isModuleInterpreted s mod_summary >>= \interpreted -> + return (showModMsg (hscTarget(hsc_dflags hsc_env)) interpreted mod_summary) + +isModuleInterpreted :: Session -> ModSummary -> IO Bool +isModuleInterpreted s mod_summary = withSession s $ \hsc_env -> case lookupUFM (hsc_HPT hsc_env) (ms_mod_name mod_summary) of Nothing -> panic "missing linkable" - Just mod_info -> return (showModMsg (hscTarget (hsc_dflags hsc_env)) (not obj_linkable) mod_summary) + Just mod_info -> return (not obj_linkable) where obj_linkable = isObjectLinkable (expectJust "showModule" (hm_linkable mod_info)) +obtainTerm1 :: Session -> Bool -> Maybe Type -> a -> IO Term +obtainTerm1 sess force mb_ty x = withSession sess $ \hsc_env -> cvObtainTerm hsc_env force mb_ty (unsafeCoerce# x) + +obtainTerm :: Session -> Bool -> Id -> IO (Maybe Term) +obtainTerm sess force id = withSession sess $ \hsc_env -> do + mb_v <- getHValue (varName id) + case mb_v of + Just v -> fmap Just$ cvObtainTerm hsc_env force (Just$ idType id) v + Nothing -> return Nothing + #endif /* GHCI */