Ghc, GhcT, GhcMonad(..),
runGhc, runGhcT, initGhcMonad,
gcatch, gbracket, gfinally,
- clearWarnings, getWarnings, hasWarnings,
- printExceptionAndWarnings, printWarnings,
- handleSourceError, defaultCallbacks, GhcApiCallbacks(..),
+ printException,
+ printExceptionAndWarnings,
+ handleSourceError,
needsTemplateHaskell,
-- * Flags and settings
-- * Loading\/compiling the program
depanal,
- load, loadWithLogger, LoadHowMuch(..),
+ load, LoadHowMuch(..),
SuccessFlag(..), succeeded, failed,
defaultWarnErrLogger, WarnErrLogger,
workingDirectoryChanged,
getTokenStream, getRichTokenStream,
showRichTokenStream, addSourceToTokens,
+ -- * Pure interface to the parser
+ parser,
+
-- * Miscellaneous
--sessionHscEnv,
cyclicModuleErr,
import InteractiveEval
#endif
-import TcRnDriver
+import GhcMonad
import TcIface
import TcRnTypes
import TcRnMonad ( initIfaceCheck )
import DataCon
import Name hiding ( varName )
-- import OccName ( parenSymOcc )
-import InstEnv ( Instance, instanceDFunId, pprInstance, pprInstanceHdr,
- emptyInstEnv )
-import FamInstEnv ( emptyFamInstEnv )
+import InstEnv
import SrcLoc
---import CoreSyn
+import CoreSyn ( CoreBind )
import TidyPgm
import DriverPipeline
import DriverPhases ( Phase(..), isHaskellSrcFilename, startPhase )
import UniqFM
import Panic
import Digraph
-import Bag ( unitBag, listToBag, emptyBag, isEmptyBag )
+import Bag ( unitBag, listToBag )
import ErrUtils
import MonadUtils
import Util
-import StringBuffer ( StringBuffer, hGetStringBuffer, nextChar )
+import StringBuffer
import Outputable
import BasicTypes
import Maybes ( expectJust, mapCatMaybes )
import FastString
+import qualified Parser
import Lexer
import System.Directory ( getModificationTime, doesFileExist,
-- | Print the error message and all warnings. Useful inside exception
-- handlers. Clears warnings after printing.
+printException :: GhcMonad m => SourceError -> m ()
+printException err = do
+ dflags <- getSessionDynFlags
+ liftIO $ printBagOfErrors dflags (srcErrorMessages err)
+
+{-# DEPRECATED printExceptionAndWarnings "use printException instead" #-}
printExceptionAndWarnings :: GhcMonad m => SourceError -> m ()
-printExceptionAndWarnings err = do
- let errs = srcErrorMessages err
- warns <- getWarnings
- dflags <- getSessionDynFlags
- if isEmptyBag errs
- -- Empty errors means we failed due to -Werror. (Since this function
- -- takes a source error as argument, we know for sure _some_ error
- -- did indeed happen.)
- then liftIO $ do
- printBagOfWarnings dflags warns
- printBagOfErrors dflags (unitBag warnIsErrorMsg)
- else liftIO $ printBagOfErrors dflags errs
- clearWarnings
-
--- | Print all accumulated warnings using 'log_action'.
-printWarnings :: GhcMonad m => m ()
-printWarnings = do
- dflags <- getSessionDynFlags
- warns <- getWarnings
- liftIO $ printBagOfWarnings dflags warns
- clearWarnings
+printExceptionAndWarnings = printException
-- | Run function for the 'Ghc' monad.
--
-> Ghc a -- ^ The action to perform.
-> IO a
runGhc mb_top_dir ghc = do
- wref <- newIORef emptyBag
ref <- newIORef undefined
- let session = Session ref wref
+ let session = Session ref
flip unGhc session $ do
initGhcMonad mb_top_dir
ghc
-> GhcT m a -- ^ The action to perform.
-> m a
runGhcT mb_top_dir ghct = do
- wref <- liftIO $ newIORef emptyBag
ref <- liftIO $ newIORef undefined
- let session = Session ref wref
+ let session = Session ref
flip unGhcT session $ do
initGhcMonad mb_top_dir
ghct
dflags0 <- liftIO $ initDynFlags defaultDynFlags
dflags <- liftIO $ initSysTools mb_top_dir dflags0
- env <- liftIO $ newHscEnv defaultCallbacks dflags
+ env <- liftIO $ newHscEnv dflags
setSession env
- clearWarnings
-
-defaultCallbacks :: GhcApiCallbacks
-defaultCallbacks =
- GhcApiCallbacks {
- reportModuleCompilationResult =
- \_ mb_err -> defaultWarnErrLogger mb_err
- }
-- -----------------------------------------------------------------------------
-- Flags & settings
--- | Grabs the DynFlags from the Session
-getSessionDynFlags :: GhcMonad m => m DynFlags
-getSessionDynFlags = withSession (return . hsc_dflags)
-
-- | Updates the DynFlags in a Session. This also reads
-- the package database (unless it has already been read),
-- and prepares the compilers knowledge about packages. It
text "Chasing modules from: ",
hcat (punctuate comma (map pprTarget targets))])
- mod_graph <- downsweep hsc_env old_graph excluded_mods allow_dup_roots
+ mod_graph <- liftIO $ downsweep hsc_env old_graph excluded_mods allow_dup_roots
modifySession $ \_ -> hsc_env { hsc_mod_graph = mod_graph }
return mod_graph
type WarnErrLogger = GhcMonad m => Maybe SourceError -> m ()
defaultWarnErrLogger :: WarnErrLogger
-defaultWarnErrLogger Nothing = printWarnings
-defaultWarnErrLogger (Just e) = printExceptionAndWarnings e
-
--- | Try to load the program. If a Module is supplied, then just
--- attempt to load up to this target. If no Module is supplied,
--- then try to load all targets.
---
--- The first argument is a function that is called after compiling each
--- module to print wanrings and errors.
---
--- While compiling a module, all 'SourceError's are caught and passed to the
--- logger, however, this function may still throw a 'SourceError' if
--- dependency analysis failed (e.g., due to a parse error).
---
-loadWithLogger :: GhcMonad m => WarnErrLogger -> LoadHowMuch -> m SuccessFlag
-loadWithLogger logger how_much = do
- -- Dependency analysis first. Note that this fixes the module graph:
- -- even if we don't get a fully successful upsweep, the full module
- -- graph is still retained in the Session. We can tell which modules
- -- were successfully loaded by inspecting the Session's HPT.
- withLocalCallbacks (\cbs -> cbs { reportModuleCompilationResult =
- \_ -> logger }) $
- load how_much
+defaultWarnErrLogger Nothing = return ()
+defaultWarnErrLogger (Just e) = printException e
load2 :: GhcMonad m => LoadHowMuch -> [ModSummary]
-> m SuccessFlag
liftIO $ debugTraceMsg dflags 2 (hang (text "Ready for upsweep")
2 (ppr mg))
- (upsweep_ok, hsc_env1, modsUpswept)
- <- upsweep (hsc_env { hsc_HPT = emptyHomePackageTable })
- pruned_hpt stable_mods cleanup mg
+
+ setSession hsc_env{ hsc_HPT = emptyHomePackageTable }
+ (upsweep_ok, modsUpswept)
+ <- upsweep pruned_hpt stable_mods cleanup mg
-- Make modsDone be the summaries for each home module now
-- available; this should equal the domain of hpt3.
moduleNameString (moduleName main_mod) ++ " module.")
-- link everything together
+ hsc_env1 <- getSession
linkresult <- liftIO $ link (ghcLink dflags) dflags do_linking (hsc_HPT hsc_env1)
- loadFinish Succeeded linkresult hsc_env1
+ loadFinish Succeeded linkresult
else
-- Tricky. We need to back out the effects of compiling any
= filter ((`notElem` mods_to_zap_names).ms_mod)
modsDone
+ hsc_env1 <- getSession
let hpt4 = retainInTopLevelEnvs (map ms_mod_name mods_to_keep)
(hsc_HPT hsc_env1)
-- Link everything together
linkresult <- liftIO $ link (ghcLink dflags) dflags False hpt4
- let hsc_env4 = hsc_env1{ hsc_HPT = hpt4 }
- loadFinish Failed linkresult hsc_env4
+ modifySession $ \hsc_env -> hsc_env{ hsc_HPT = hpt4 }
+ loadFinish Failed linkresult
-- Finish up after a load.
-- If the link failed, unload everything and return.
loadFinish :: GhcMonad m =>
- SuccessFlag -> SuccessFlag -> HscEnv
+ SuccessFlag -> SuccessFlag
-> m SuccessFlag
-loadFinish _all_ok Failed hsc_env
- = do liftIO $ unload hsc_env []
- modifySession $ \_ -> discardProg hsc_env
+loadFinish _all_ok Failed
+ = do hsc_env <- getSession
+ liftIO $ unload hsc_env []
+ modifySession discardProg
return Failed
-- Empty the interactive context and set the module context to the topmost
-- newly loaded module, or the Prelude if none were loaded.
-loadFinish all_ok Succeeded hsc_env
- = do modifySession $ \_ -> hsc_env{ hsc_IC = emptyInteractiveContext }
+loadFinish all_ok Succeeded
+ = do modifySession $ \hsc_env -> hsc_env{ hsc_IC = emptyInteractiveContext }
return all_ok
-- Throws a 'SourceError' on parse error.
parseModule :: GhcMonad m => ModSummary -> m ParsedModule
parseModule ms = do
- rdr_module <- withTempSession
- (\e -> e { hsc_dflags = ms_hspp_opts ms }) $
- hscParse ms
+ hsc_env <- getSession
+ let hsc_env_tmp = hsc_env { hsc_dflags = ms_hspp_opts ms }
+ rdr_module <- liftIO $ hscParse hsc_env_tmp ms
return (ParsedModule ms rdr_module)
-- | Typecheck and rename a parsed module.
typecheckModule :: GhcMonad m => ParsedModule -> m TypecheckedModule
typecheckModule pmod = do
let ms = modSummary pmod
- withTempSession (\e -> e { hsc_dflags = ms_hspp_opts ms }) $ do
- (tc_gbl_env, rn_info)
- <- hscTypecheckRename ms (parsedSource pmod)
- details <- makeSimpleDetails tc_gbl_env
- return $
+ hsc_env <- getSession
+ let hsc_env_tmp = hsc_env { hsc_dflags = ms_hspp_opts ms }
+ (tc_gbl_env, rn_info)
+ <- liftIO $ hscTypecheckRename hsc_env_tmp ms (parsedSource pmod)
+ details <- liftIO $ makeSimpleDetails hsc_env_tmp tc_gbl_env
+ return $
TypecheckedModule {
tm_internals_ = (tc_gbl_env, details),
tm_parsed_module = pmod,
desugarModule :: GhcMonad m => TypecheckedModule -> m DesugaredModule
desugarModule tcm = do
let ms = modSummary tcm
- withTempSession (\e -> e { hsc_dflags = ms_hspp_opts ms }) $ do
- let (tcg, _) = tm_internals tcm
- guts <- hscDesugar ms tcg
- return $
+ let (tcg, _) = tm_internals tcm
+ hsc_env <- getSession
+ let hsc_env_tmp = hsc_env { hsc_dflags = ms_hspp_opts ms }
+ guts <- liftIO $ hscDesugar hsc_env_tmp ms tcg
+ return $
DesugaredModule {
dm_typechecked_module = tcm,
dm_core_module = guts
let mod = ms_mod_name ms
let loc = ms_location ms
let (tcg, _details) = tm_internals tcm
- hpt_new <-
- withTempSession (\e -> e { hsc_dflags = ms_hspp_opts ms }) $ do
- let compilerBackend comp env ms' _ _mb_old_iface _ =
- withTempSession (\_ -> env) $
- hscBackend comp tcg ms' Nothing
-
- hsc_env <- getSession
- mod_info <- do
- mb_linkable <-
- case ms_obj_date ms of
+ mb_linkable <- case ms_obj_date ms of
Just t | t > ms_hs_date ms -> do
l <- liftIO $ findObjectLinkable (ms_mod ms)
(ml_obj_file loc) t
return (Just l)
_otherwise -> return Nothing
- compile' (compilerBackend hscNothingCompiler
- ,compilerBackend hscInteractiveCompiler
- ,hscCheckRecompBackend hscBatchCompiler tcg)
- hsc_env ms 1 1 Nothing mb_linkable
- -- compile' shouldn't change the environment
- return $ addToUFM (hsc_HPT hsc_env) mod mod_info
- modifySession $ \e -> e{ hsc_HPT = hpt_new }
+ -- compile doesn't change the session
+ hsc_env <- getSession
+ mod_info <- liftIO $ compile' (hscNothingBackendOnly tcg,
+ hscInteractiveBackendOnly tcg,
+ hscBatchBackendOnly tcg)
+ hsc_env ms 1 1 Nothing mb_linkable
+
+ modifySession $ \e -> e{ hsc_HPT = addToUFM (hsc_HPT e) mod mod_info }
return tcm
+-- -----------------------------------------------------------------------------
+-- Operations dealing with Core
+
+-- | A CoreModule consists of just the fields of a 'ModGuts' that are needed for
+-- the 'GHC.compileToCoreModule' interface.
+data CoreModule
+ = CoreModule {
+ -- | Module name
+ cm_module :: !Module,
+ -- | Type environment for types declared in this module
+ cm_types :: !TypeEnv,
+ -- | Declarations
+ cm_binds :: [CoreBind],
+ -- | Imports
+ cm_imports :: ![Module]
+ }
+
+instance Outputable CoreModule where
+ ppr (CoreModule {cm_module = mn, cm_types = te, cm_binds = cb}) =
+ text "%module" <+> ppr mn <+> ppr te $$ vcat (map ppr cb)
-- | This is the way to get access to the Core bindings corresponding
-- to a module. 'compileToCore' parses, typechecks, and
ms_hspp_buf = Nothing
}
- let maybe_simplify mod_guts | simplify = hscSimplify mod_guts
- | otherwise = return mod_guts
- guts <- maybe_simplify (mkModGuts cm)
- (iface, changed, _details, cgguts)
- <- hscNormalIface guts Nothing
- hscWriteIface iface changed modSummary
- _ <- hscGenHardCode cgguts modSummary
- return ()
-
--- Makes a "vanilla" ModGuts.
-mkModGuts :: CoreModule -> ModGuts
-mkModGuts coreModule = ModGuts {
- mg_module = cm_module coreModule,
- mg_boot = False,
- mg_exports = [],
- mg_deps = noDependencies,
- mg_dir_imps = emptyModuleEnv,
- mg_used_names = emptyNameSet,
- mg_rdr_env = emptyGlobalRdrEnv,
- mg_fix_env = emptyFixityEnv,
- mg_types = emptyTypeEnv,
- mg_insts = [],
- mg_fam_insts = [],
- mg_rules = [],
- mg_binds = cm_binds coreModule,
- mg_foreign = NoStubs,
- mg_warns = NoWarnings,
- mg_anns = [],
- mg_hpc_info = emptyHpcInfo False,
- mg_modBreaks = emptyModBreaks,
- mg_vect_info = noVectInfo,
- mg_inst_env = emptyInstEnv,
- mg_fam_inst_env = emptyFamInstEnv
-}
+ hsc_env <- getSession
+ liftIO $ hscCompileCore hsc_env simplify modSummary (cm_binds cm)
+
compileCore :: GhcMonad m => Bool -> FilePath -> m CoreModule
compileCore simplify fn = do
-- If simplify is true: simplify (hscSimplify), then tidy
-- (tidyProgram).
hsc_env <- getSession
- simpl_guts <- hscSimplify mod_guts
+ simpl_guts <- liftIO $ hscSimplify hsc_env mod_guts
tidy_guts <- liftIO $ tidyProgram hsc_env simpl_guts
return $ Left tidy_guts
else
-- There better had not be any cyclic groups here -- we check for them.
upsweep
- :: GhcMonad m =>
- HscEnv -- ^ Includes initially-empty HPT
- -> HomePackageTable -- ^ HPT from last time round (pruned)
+ :: GhcMonad m
+ => HomePackageTable -- ^ HPT from last time round (pruned)
-> ([ModuleName],[ModuleName]) -- ^ stable modules (see checkStability)
-> IO () -- ^ How to clean up unwanted tmp files
-> [SCC ModSummary] -- ^ Mods to do (the worklist)
-> m (SuccessFlag,
- HscEnv,
- [ModSummary])
+ [ModSummary])
-- ^ Returns:
--
-- 1. A flag whether the complete upsweep was successful.
- -- 2. The 'HscEnv' with an updated HPT
+ -- 2. The 'HscEnv' in the monad has an updated HPT
-- 3. A list of modules which succeeded loading.
-upsweep hsc_env old_hpt stable_mods cleanup sccs = do
- (res, hsc_env, done) <- upsweep' hsc_env old_hpt [] sccs 1 (length sccs)
- return (res, hsc_env, reverse done)
+upsweep old_hpt stable_mods cleanup sccs = do
+ (res, done) <- upsweep' old_hpt [] sccs 1 (length sccs)
+ return (res, reverse done)
where
- upsweep' hsc_env _old_hpt done
+ upsweep' _old_hpt done
[] _ _
- = return (Succeeded, hsc_env, done)
+ = return (Succeeded, done)
- upsweep' hsc_env _old_hpt done
+ upsweep' _old_hpt done
(CyclicSCC ms:_) _ _
- = do liftIO $ fatalErrorMsg (hsc_dflags hsc_env) (cyclicModuleErr ms)
- return (Failed, hsc_env, done)
+ = do dflags <- getSessionDynFlags
+ liftIO $ fatalErrorMsg dflags (cyclicModuleErr ms)
+ return (Failed, done)
- upsweep' hsc_env old_hpt done
+ upsweep' old_hpt done
(AcyclicSCC mod:mods) mod_index nmods
= do -- putStrLn ("UPSWEEP_MOD: hpt = " ++
-- show (map (moduleUserString.moduleName.mi_module.hm_iface)
-- (moduleEnvElts (hsc_HPT hsc_env)))
- let logger = reportModuleCompilationResult (hsc_callbacks hsc_env)
+ let logger _mod = defaultWarnErrLogger
+ hsc_env <- getSession
mb_mod_info
<- handleSourceError
(\err -> do logger mod (Just err); return Nothing) $ do
- mod_info <- upsweep_mod hsc_env old_hpt stable_mods
- mod mod_index nmods
+ mod_info <- liftIO $ upsweep_mod hsc_env old_hpt stable_mods
+ mod mod_index nmods
logger mod Nothing -- log warnings
return (Just mod_info)
liftIO cleanup -- Remove unwanted tmp files between compilations
case mb_mod_info of
- Nothing -> return (Failed, hsc_env, done)
+ Nothing -> return (Failed, done)
Just mod_info -> do
let this_mod = ms_mod_name mod
-- fixup our HomePackageTable after we've finished compiling
-- a mutually-recursive loop. See reTypecheckLoop, below.
hsc_env2 <- liftIO $ reTypecheckLoop hsc_env1 mod done'
+ setSession hsc_env2
- upsweep' hsc_env2 old_hpt1 done' mods (mod_index+1) nmods
+ upsweep' old_hpt1 done' mods (mod_index+1) nmods
-- | Compile a single module. Always produce a Linkable for it if
-- successful. If no compilation happened, return the old Linkable.
-upsweep_mod :: GhcMonad m =>
- HscEnv
+upsweep_mod :: HscEnv
-> HomePackageTable
-> ([ModuleName],[ModuleName])
-> ModSummary
-> Int -- index of module
-> Int -- total number of modules
- -> m HomeModInfo
+ -> IO HomeModInfo
upsweep_mod hsc_env old_hpt (stable_obj, stable_bco) summary mod_index nmods
= let
where
iface = hm_iface hm_info
- compile_it :: GhcMonad m => Maybe Linkable -> m HomeModInfo
- compile_it = compile hsc_env summary' mod_index nmods mb_old_iface
+ compile_it :: Maybe Linkable -> IO HomeModInfo
+ compile_it mb_linkable =
+ compile hsc_env summary' mod_index nmods
+ mb_old_iface mb_linkable
- compile_it_discard_iface :: GhcMonad m =>
- Maybe Linkable -> m HomeModInfo
- compile_it_discard_iface
- = compile hsc_env summary' mod_index nmods Nothing
+ compile_it_discard_iface :: Maybe Linkable -> IO HomeModInfo
+ compile_it_discard_iface mb_linkable =
+ compile hsc_env summary' mod_index nmods
+ Nothing mb_linkable
-- With the HscNothing target we create empty linkables to avoid
-- recompilation. We have to detect these to recompile anyway if
-- definitely be replaced by ordinary non-SOURCE imports: if SOURCE
-- were necessary, then the edge would be part of a cycle.
warnUnnecessarySourceImports :: GhcMonad m => [SCC ModSummary] -> m ()
-warnUnnecessarySourceImports sccs =
+warnUnnecessarySourceImports sccs = do
logWarnings (listToBag (concatMap (check.flattenSCC) sccs))
where check ms =
let mods_in_this_cycle = map ms_mod_name ms in
-- module, plus one for any hs-boot files. The imports of these nodes
-- are all there, including the imports of non-home-package modules.
-downsweep :: GhcMonad m =>
- HscEnv
+downsweep :: HscEnv
-> [ModSummary] -- Old summaries
-> [ModuleName] -- Ignore dependencies on these; treat
-- them as if they were package modules
-> Bool -- True <=> allow multiple targets to have
-- the same module name; this is
-- very useful for ghc -M
- -> m [ModSummary]
+ -> IO [ModSummary]
-- The elts of [ModSummary] all have distinct
-- (Modules, IsBoot) identifiers, unless the Bool is true
-- in which case there can be repeats
downsweep hsc_env old_summaries excl_mods allow_dup_roots
- = do -- catch error messages and return them
- --handleErrMsg -- should be covered by GhcMonad now
- -- (\err_msg -> printBagOfErrors (hsc_dflags hsc_env) (unitBag err_msg) >> return Nothing) $ do
+ = do
rootSummaries <- mapM getRootSummary roots
let root_map = mkRootMap rootSummaries
checkDuplicates root_map
old_summary_map :: NodeMap ModSummary
old_summary_map = mkNodeMap old_summaries
- getRootSummary :: GhcMonad m => Target -> m ModSummary
+ getRootSummary :: Target -> IO ModSummary
getRootSummary (Target (TargetFile file mb_phase) obj_allowed maybe_buf)
= do exists <- liftIO $ doesFileExist file
if exists
-- name, so we have to check that there aren't multiple root files
-- defining the same module (otherwise the duplicates will be silently
-- ignored, leading to confusing behaviour).
- checkDuplicates :: GhcMonad m => NodeMap [ModSummary] -> m ()
+ checkDuplicates :: NodeMap [ModSummary] -> IO ()
checkDuplicates root_map
| allow_dup_roots = return ()
| null dup_roots = return ()
dup_roots :: [[ModSummary]] -- Each at least of length 2
dup_roots = filterOut isSingleton (nodeMapElts root_map)
- loop :: GhcMonad m =>
- [(Located ModuleName,IsBootInterface)]
+ loop :: [(Located ModuleName,IsBootInterface)]
-- Work list: process these modules
-> NodeMap [ModSummary]
-- Visited set; the range is a list because
-- the roots can have the same module names
-- if allow_dup_roots is True
- -> m [ModSummary]
+ -> IO [ModSummary]
-- The result includes the worklist, except
-- for those mentioned in the visited set
loop [] done = return (concat (nodeMapElts done))
= if isSingleton summs then
loop ss done
else
- do { liftIO $ multiRootsErr summs; return [] }
+ do { multiRootsErr summs; return [] }
| otherwise
= do mb_s <- summariseModule hsc_env old_summary_map
is_boot wanted_mod True
-- resides.
summariseFile
- :: GhcMonad m =>
- HscEnv
+ :: HscEnv
-> [ModSummary] -- old summaries
-> FilePath -- source file name
-> Maybe Phase -- start phase
-> Bool -- object code allowed?
-> Maybe (StringBuffer,ClockTime)
- -> m ModSummary
+ -> IO ModSummary
summariseFile hsc_env old_summaries file mb_phase obj_allowed maybe_buf
-- we can use a cached summary if one is available and the
-- Summarise a module, and pick up source and timestamp.
summariseModule
- :: GhcMonad m =>
- HscEnv
+ :: HscEnv
-> NodeMap ModSummary -- Map of old summaries
-> IsBootInterface -- True <=> a {-# SOURCE #-} import
-> Located ModuleName -- Imported module to be summarised
-> Bool -- object code allowed?
-> Maybe (StringBuffer, ClockTime)
-> [ModuleName] -- Modules to exclude
- -> m (Maybe ModSummary) -- Its new summary
+ -> IO (Maybe ModSummary) -- Its new summary
summariseModule hsc_env old_summary_map is_boot (L loc wanted_mod)
obj_allowed maybe_buf excl_mods
case maybe_buf of
Just (_,t) -> check_timestamp old_summary location src_fn t
Nothing -> do
- m <- liftIO $ System.IO.Error.try (getModificationTime src_fn)
+ m <- System.IO.Error.try (getModificationTime src_fn)
case m of
Right t -> check_timestamp old_summary location src_fn t
Left e | isDoesNotExistError e -> find_it
- | otherwise -> liftIO $ ioError e
+ | otherwise -> ioError e
| otherwise = find_it
where
check_timestamp old_summary location src_fn src_timestamp
| ms_hs_date old_summary == src_timestamp = do
-- update the object-file timestamp
- obj_timestamp <- liftIO $
+ obj_timestamp <-
if isObjectTarget (hscTarget (hsc_dflags hsc_env))
|| obj_allowed -- bug #1205
then getObjTimestamp location is_boot
-- previously a package module, it may have now appeared on the
-- search path, so we want to consider it to be a home module. If
-- the module was previously a home module, it may have moved.
- liftIO $ uncacheModule hsc_env wanted_mod
- found <- liftIO $ findImportedModule hsc_env wanted_mod Nothing
+ uncacheModule hsc_env wanted_mod
+ found <- findImportedModule hsc_env wanted_mod Nothing
case found of
Found location mod
| isJust (ml_hs_file location) ->
ASSERT(modulePackageId mod /= thisPackage dflags)
return Nothing
- err -> liftIO $ noModError dflags loc wanted_mod err
+ err -> noModError dflags loc wanted_mod err
-- Not found
just_found location mod = do
-- Check that it exists
-- It might have been deleted since the Finder last found it
- maybe_t <- liftIO $ modificationTimeIfExists src_fn
+ maybe_t <- modificationTimeIfExists src_fn
case maybe_t of
Nothing -> noHsFileErr loc src_fn
Just t -> new_summary location' mod src_fn t
$$ text "Expected:" <+> quotes (ppr wanted_mod)
-- Find the object timestamp, and return the summary
- obj_timestamp <- liftIO $
+ obj_timestamp <-
if isObjectTarget (hscTarget (hsc_dflags hsc_env))
|| obj_allowed -- bug #1205
then getObjTimestamp location is_boot
else modificationTimeIfExists (ml_obj_file location)
-preprocessFile :: GhcMonad m =>
- HscEnv
+preprocessFile :: HscEnv
-> FilePath
-> Maybe Phase -- ^ Starting phase
-> Maybe (StringBuffer,ClockTime)
- -> m (DynFlags, FilePath, StringBuffer)
+ -> IO (DynFlags, FilePath, StringBuffer)
preprocessFile hsc_env src_fn mb_phase Nothing
= do
(dflags', hspp_fn) <- preprocess hsc_env (src_fn, mb_phase)
- buf <- liftIO $ hGetStringBuffer hspp_fn
+ buf <- hGetStringBuffer hspp_fn
return (dflags', hspp_fn, buf)
preprocessFile hsc_env src_fn mb_phase (Just (buf, _time))
noModError dflags loc wanted_mod err
= throwOneError $ mkPlainErrMsg loc $ cannotFindModule dflags wanted_mod err
-noHsFileErr :: GhcMonad m => SrcSpan -> String -> m a
+noHsFileErr :: SrcSpan -> String -> IO a
noHsFileErr loc path
= throwOneError $ mkPlainErrMsg loc $ text "Can't find" <+> text path
-packageModErr :: GhcMonad m => ModuleName -> m a
+packageModErr :: ModuleName -> IO a
packageModErr mod
= throwOneError $ mkPlainErrMsg noSrcSpan $
text "module" <+> quotes (ppr mod) <+> text "is a package module"
getPackageModuleInfo :: HscEnv -> Module -> IO (Maybe ModuleInfo)
#ifdef GHCI
getPackageModuleInfo hsc_env mdl = do
- (_msgs, mb_avails) <- getModuleExports hsc_env mdl
+ mb_avails <- hscGetModuleExports hsc_env mdl
case mb_avails of
Nothing -> return Nothing
Just avails -> do
-- | Returns the 'TyThing' for a 'Name'. The 'Name' may refer to any
-- entity known to GHC, including 'Name's defined using 'runStmt'.
lookupName :: GhcMonad m => Name -> m (Maybe TyThing)
-lookupName name = withSession $ \hsc_env -> do
- mb_tything <- ioMsg $ tcRnLookupName hsc_env name
- return mb_tything
- -- XXX: calls panic in some circumstances; is that ok?
+lookupName name =
+ withSession $ \hsc_env ->
+ liftIO $ hscTcRcLookupName hsc_env name
+
+-- -----------------------------------------------------------------------------
+-- Pure API
+
+-- | A pure interface to the module parser.
+--
+parser :: String -- ^ Haskell module source text (full Unicode is supported)
+ -> DynFlags -- ^ the flags
+ -> FilePath -- ^ the filename (for source locations)
+ -> Either ErrorMessages (WarningMessages, Located (HsModule RdrName))
+
+parser str dflags filename =
+ let
+ loc = mkSrcLoc (mkFastString filename) 1 1
+ buf = stringToStringBuffer str
+ in
+ case unP Parser.parseModule (mkPState dflags buf loc) of
+
+ PFailed span err ->
+ Left (unitBag (mkPlainErrMsg span err))
+ POk pst rdr_module ->
+ let (warns,_) = getMessages pst in
+ Right (warns, rdr_module)
projects / ghc-hetmet.git / blobdiff