--
-- -----------------------------------------------------------------------------
-{-# 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/Commentary/CodingStyle#Warnings
--- for details
-
module GHC (
-- * Initialisation
Session,
import OccName ( parenSymOcc )
import InstEnv ( Instance, instanceDFunId, pprInstance, pprInstanceHdr )
import SrcLoc
-import Desugar
import CoreSyn
-import TcRnDriver ( tcRnModule )
import DriverPipeline
import DriverPhases ( HscSource(..), Phase(..), isHaskellSrcFilename, startPhase )
import HeaderInfo ( getImports, getOptions )
writeIORef ref $! hsc_env{ hsc_IC = emptyInteractiveContext }
throw e
+load2 :: Session -> LoadHowMuch -> [ModSummary] -> IO SuccessFlag
load2 s@(Session ref) how_much mod_graph = do
guessOutputFile s
hsc_env <- readIORef ref
-- short of the specified module (unless the specified module
-- is stable).
partial_mg
- | LoadDependenciesOf mod <- how_much
+ | LoadDependenciesOf _mod <- how_much
= ASSERT( case last partial_mg0 of
AcyclicSCC ms -> ms_mod_name ms == mod; _ -> False )
List.init partial_mg0
-- Finish up after a load.
-- If the link failed, unload everything and return.
-loadFinish all_ok Failed ref hsc_env
+loadFinish :: SuccessFlag -> SuccessFlag -> IORef HscEnv -> HscEnv -> IO SuccessFlag
+loadFinish _all_ok Failed ref hsc_env
= do unload hsc_env []
writeIORef ref $! discardProg hsc_env
return Failed
-- used to fish out the preprocess output files for the purposes of
-- cleaning up. The preprocessed file *might* be the same as the
-- source file, but that doesn't do any harm.
+ppFilesFromSummaries :: [ModSummary] -> [FilePath]
ppFilesFromSummaries summaries = map ms_hspp_file summaries
-- -----------------------------------------------------------------------------
-- If compileToCore is true, it also desugars the module and returns the
-- resulting Core bindings as a component of the CheckedModule.
checkModule :: Session -> ModuleName -> Bool -> IO (Maybe CheckedModule)
-checkModule session@(Session ref) mod compileToCore = do
+checkModule (Session ref) mod compileToCore = do
-- parse & typecheck the module
hsc_env <- readIORef ref
let mg = hsc_mod_graph hsc_env
-- desugar the module, then returns the resulting list of Core bindings if
-- successful.
compileToCore :: Session -> FilePath -> IO (Maybe [CoreBind])
-compileToCore session@(Session ref) fn = do
- hsc_env <- readIORef ref
+compileToCore session fn = do
-- First, set the target to the desired filename
target <- guessTarget fn Nothing
addTarget session target
case maybeModGraph of
Nothing -> return Nothing
Just modGraph -> do
- case find ((== fn) . msHsFilePath) modGraph of
- Just modSummary -> do
- -- Now we have the module name;
- -- parse, typecheck and desugar the module
- let mod = ms_mod_name modSummary
- maybeCheckedModule <- checkModule session mod True
- case maybeCheckedModule of
+ let modSummary = expectJust "compileToCore" $
+ find ((== fn) . msHsFilePath) modGraph
+ -- Now we have the module name;
+ -- parse, typecheck and desugar the module
+ let mod = ms_mod_name modSummary
+ maybeCheckedModule <- checkModule session mod True
+ case maybeCheckedModule of
Nothing -> return Nothing
Just checkedMod -> return $ coreBinds checkedMod
-- ---------------------------------------------------------------------------
LinkInMemory -> Linker.unload (hsc_dflags hsc_env) stable_linkables
#else
LinkInMemory -> panic "unload: no interpreter"
+ -- urgh. avoid warnings:
+ hsc_env stable_linkables
#endif
- other -> return ()
+ _other -> return ()
-- -----------------------------------------------------------------------------
-- checkStability
= chew theGraph
where
chew [] = []
- chew ((AcyclicSCC v):rest) = chew rest -- acyclic? not interesting.
+ chew ((AcyclicSCC _):rest) = chew rest -- acyclic? not interesting.
chew ((CyclicSCC vs):rest)
= let names_in_this_cycle = nub (map ms_mod vs)
mods_in_this_cycle
upsweep hsc_env old_hpt stable_mods cleanup mods
= upsweep' hsc_env old_hpt stable_mods cleanup mods 1 (length mods)
+ where
-upsweep' hsc_env old_hpt stable_mods cleanup
+ upsweep' hsc_env _old_hpt _stable_mods _cleanup
[] _ _
= return (Succeeded, hsc_env, [])
-upsweep' hsc_env old_hpt stable_mods cleanup
+ upsweep' hsc_env _old_hpt _stable_mods _cleanup
(CyclicSCC ms:_) _ _
= do fatalErrorMsg (hsc_dflags hsc_env) (cyclicModuleErr ms)
return (Failed, hsc_env, [])
-upsweep' hsc_env old_hpt stable_mods cleanup
+ upsweep' hsc_env old_hpt stable_mods cleanup
(AcyclicSCC mod:mods) mod_index nmods
= do -- putStrLn ("UPSWEEP_MOD: hpt = " ++
-- show (map (moduleUserString.moduleName.mi_module.hm_iface)
iface = hm_iface hm_info
compile_it :: Maybe Linkable -> IO (Maybe HomeModInfo)
- compile_it = upsweep_compile hsc_env old_hpt this_mod_name
+ compile_it = upsweep_compile hsc_env
summary' mod_index nmods mb_old_iface
compile_it_discard_iface
- = upsweep_compile hsc_env old_hpt this_mod_name
+ = upsweep_compile hsc_env
summary' mod_index nmods Nothing
in
-- Run hsc to compile a module
-upsweep_compile hsc_env old_hpt this_mod summary
- mod_index nmods
- mb_old_iface
- mb_old_linkable
+upsweep_compile :: HscEnv -> ModSummary -> Int -> Int
+ -> Maybe ModIface -> Maybe Linkable -> IO (Maybe HomeModInfo)
+upsweep_compile hsc_env summary mod_index nmods mb_old_iface mb_old_linkable
= do
compresult <- compile hsc_env summary mb_old_linkable mb_old_iface
mod_index nmods
printBagOfWarnings dflags (listToBag (concat (map (check.flattenSCC) sccs)))
where check ms =
let mods_in_this_cycle = map ms_mod_name ms in
- [ warn m i | m <- ms, i <- ms_srcimps m,
+ [ warn i | m <- ms, i <- ms_srcimps m,
unLoc i `notElem` mods_in_this_cycle ]
- warn :: ModSummary -> Located ModuleName -> WarnMsg
- warn ms (L loc mod) =
+ warn :: Located ModuleName -> WarnMsg
+ warn (L loc mod) =
mkPlainErrMsg loc
(ptext SLIT("Warning: {-# SOURCE #-} unnecessary in import of ")
<+> quotes (ppr mod))
= case [ ms | ms <- summaries, HsSrcFile <- [ms_hsc_src ms],
expectJust "findSummaryBySourceFile" (ml_hs_file (ms_location ms)) == file ] of
[] -> Nothing
- (x:xs) -> Just x
+ (x:_) -> Just x
-- Summarise a module, and pick up source and timestamp.
summariseModule
ms_obj_date = obj_timestamp }))
+getObjTimestamp :: ModLocation -> Bool -> IO (Maybe ClockTime)
getObjTimestamp location is_boot
= if is_boot then return Nothing
else modificationTimeIfExists (ml_obj_file location)
buf <- hGetStringBuffer hspp_fn
return (dflags', hspp_fn, buf)
-preprocessFile dflags src_fn mb_phase (Just (buf, time))
+preprocessFile dflags src_fn mb_phase (Just (buf, _time))
= do
-- case we bypass the preprocessing stage?
let
local_opts = getOptions buf src_fn
--
- (dflags', errs) <- parseDynamicFlags dflags (map unLoc local_opts)
+ (dflags', _errs) <- parseDynamicFlags dflags (map unLoc local_opts)
+ -- XXX: shouldn't we be reporting the errors?
let
needs_preprocessing
noModError dflags loc wanted_mod err
= throwDyn $ mkPlainErrMsg loc $ cannotFindModule dflags wanted_mod err
+noHsFileErr :: SrcSpan -> String -> a
noHsFileErr loc path
= throwDyn $ mkPlainErrMsg loc $ text "Can't find" <+> text path
+packageModErr :: ModuleName -> a
packageModErr mod
= throwDyn $ mkPlainErrMsg noSrcSpan $
text "module" <+> quotes (ppr mod) <+> text "is a package module"
multiRootsErr :: [ModSummary] -> IO ()
+multiRootsErr [] = panic "multiRootsErr"
multiRootsErr summs@(summ1:_)
= throwDyn $ mkPlainErrMsg noSrcSpan $
text "module" <+> quotes (ppr mod) <+>
-- exist... hence the isHomeModule test here. (ToDo: reinstate)
getPackageModuleInfo :: HscEnv -> Module -> IO (Maybe ModuleInfo)
-getPackageModuleInfo hsc_env mdl = do
#ifdef GHCI
+getPackageModuleInfo hsc_env mdl = do
(_msgs, mb_avails) <- getModuleExports hsc_env mdl
case mb_avails of
Nothing -> return Nothing
minf_modBreaks = emptyModBreaks
}))
#else
+getPackageModuleInfo _hsc_env _mdl = do
-- bogusly different for non-GHCI (ToDo)
return Nothing
#endif
+getHomeModuleInfo :: HscEnv -> ModuleName -> IO (Maybe ModuleInfo)
getHomeModuleInfo hsc_env mdl =
case lookupUFM (hsc_HPT hsc_env) mdl of
Nothing -> return Nothing
(hsc_HPT hsc_env) (eps_PTE eps) name
#ifdef GHCI
+modInfoModBreaks :: ModuleInfo -> ModBreaks
modInfoModBreaks = minf_modBreaks
#endif
isDictonaryId :: Id -> Bool
isDictonaryId id
- = case tcSplitSigmaTy (idType id) of { (tvs, theta, tau) -> isDictTy tau }
+ = case tcSplitSigmaTy (idType id) of { (_tvs, _theta, tau) -> isDictTy tau }
-- | Looks up a global name: that is, any top-level name in any
-- visible module. Unlike 'lookupName', lookupGlobalName does not use
-- using the algorithm that is used for an @import@ declaration.
findModule :: Session -> ModuleName -> Maybe PackageId -> IO Module
findModule s mod_name maybe_pkg = withSession s $ \hsc_env ->
- findModule' hsc_env mod_name maybe_pkg
-
-findModule' hsc_env mod_name maybe_pkg =
let
dflags = hsc_dflags hsc_env
hpt = hsc_HPT hsc_env
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