import Type hiding (typeKind)
import TcType hiding (typeKind)
import Id
-import Var hiding (setIdType)
+import Var
import TysPrim ( alphaTyVars )
import TyCon
import Class
import Control.Monad
import System.Exit ( exitWith, ExitCode(..) )
import System.Time ( ClockTime, getClockTime )
-import Control.Exception as Exception hiding (handle)
+import Exception
import Data.IORef
import System.FilePath
import System.IO
import System.IO.Error ( try, isDoesNotExistError )
+#if __GLASGOW_HASKELL__ >= 609
+import Data.Typeable (cast)
+#endif
import Prelude hiding (init)
-- the top level of your program. The default handlers output the error
-- message(s) to stderr and exit cleanly.
defaultErrorHandler :: DynFlags -> IO a -> IO a
-defaultErrorHandler dflags inner =
+defaultErrorHandler dflags inner =
-- top-level exception handler: any unrecognised exception is a compiler bug.
+#if __GLASGOW_HASKELL__ < 609
handle (\exception -> do
- hFlush stdout
- case exception of
- -- an IO exception probably isn't our fault, so don't panic
- IOException _ ->
- fatalErrorMsg dflags (text (show exception))
- AsyncException StackOverflow ->
- fatalErrorMsg dflags (text "stack overflow: use +RTS -K<size> to increase it")
- _other ->
- fatalErrorMsg dflags (text (show (Panic (show exception))))
- exitWith (ExitFailure 1)
+ hFlush stdout
+ case exception of
+ -- an IO exception probably isn't our fault, so don't panic
+ IOException _ ->
+ fatalErrorMsg dflags (text (show exception))
+ AsyncException StackOverflow ->
+ fatalErrorMsg dflags (text "stack overflow: use +RTS -K<size> to increase it")
+ ExitException _ -> throw exception
+ _ ->
+ fatalErrorMsg dflags (text (show (Panic (show exception))))
+ exitWith (ExitFailure 1)
+ ) $
+#else
+ handle (\(SomeException exception) -> do
+ hFlush stdout
+ case cast exception of
+ -- an IO exception probably isn't our fault, so don't panic
+ Just (ioe :: IOException) ->
+ fatalErrorMsg dflags (text (show ioe))
+ _ -> case cast exception of
+ Just StackOverflow ->
+ fatalErrorMsg dflags (text "stack overflow: use +RTS -K<size> to increase it")
+ _ -> case cast exception of
+ Just (ex :: ExitCode) -> throw ex
+ _ ->
+ fatalErrorMsg dflags
+ (text (show (Panic (show exception))))
+ exitWith (ExitFailure 1)
) $
+#endif
-- program errors: messages with locations attached. Sometimes it is
-- convenient to just throw these as exceptions.
- handleDyn (\dyn -> do printBagOfErrors dflags (unitBag dyn)
- exitWith (ExitFailure 1)) $
+ handleErrMsg
+ (\em -> do printBagOfErrors dflags (unitBag em)
+ exitWith (ExitFailure 1)) $
-- error messages propagated as exceptions
- handleDyn (\dyn -> do
+ handleGhcException
+ (\ge -> do
hFlush stdout
- case dyn of
+ case ge of
PhaseFailed _ code -> exitWith code
Interrupted -> exitWith (ExitFailure 1)
- _ -> do fatalErrorMsg dflags (text (show (dyn :: GhcException)))
+ _ -> do fatalErrorMsg dflags (text (show ge))
exitWith (ExitFailure 1)
) $
inner
defaultCleanupHandler :: DynFlags -> IO a -> IO a
defaultCleanupHandler dflags inner =
-- make sure we clean up after ourselves
- later (do cleanTempFiles dflags
+ inner `onException`
+ (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
-- signals.
- inner
-- | Starts a new session. A session consists of a set of loaded
if exists
then return (Target (TargetFile lhs_file Nothing) Nothing)
else do
- throwDyn (ProgramError (showSDoc $
+ throwGhcException
+ (ProgramError (showSDoc $
text "target" <+> quotes (text file) <+>
text "is not a module name or a source file"))
where
(graph, vertex_fn, key_fn) = graphFromEdges' nodes
root
| Just key <- lookup_key HsSrcFile mod, Just v <- key_fn key = v
- | otherwise = throwDyn (ProgramError "module does not exist")
+ | otherwise = ghcError (ProgramError "module does not exist")
moduleGraphNodes :: Bool -> [ModSummary]
-> ([(ModSummary, Int, [Int])], HscSource -> ModuleName -> Maybe Int)
-- in which case there can be repeats
downsweep hsc_env old_summaries excl_mods allow_dup_roots
= -- catch error messages and return them
- handleDyn (\err_msg -> printBagOfErrors (hsc_dflags hsc_env) (unitBag err_msg) >> return Nothing) $ do
+ handleErrMsg
+ (\err_msg -> printBagOfErrors (hsc_dflags hsc_env) (unitBag err_msg) >> return Nothing) $ do
rootSummaries <- mapM getRootSummary roots
let root_map = mkRootMap rootSummaries
checkDuplicates root_map
= do exists <- doesFileExist file
if exists
then summariseFile hsc_env old_summaries file mb_phase maybe_buf
- else throwDyn $ mkPlainErrMsg noSrcSpan $
+ else throwErrMsg $ mkPlainErrMsg noSrcSpan $
text "can't find file:" <+> text file
getRootSummary (Target (TargetModule modl) maybe_buf)
= do maybe_summary <- summariseModule hsc_env old_summary_map False
(srcimps, the_imps, L mod_loc mod_name) <- getImports dflags' buf hspp_fn src_fn
when (mod_name /= wanted_mod) $
- throwDyn $ mkPlainErrMsg mod_loc $
+ throwErrMsg $ mkPlainErrMsg mod_loc $
text "File name does not match module name:"
$$ text "Saw:" <+> quotes (ppr mod_name)
$$ text "Expected:" <+> quotes (ppr wanted_mod)
noModError :: DynFlags -> SrcSpan -> ModuleName -> FindResult -> IO ab
-- ToDo: we don't have a proper line number for this error
noModError dflags loc wanted_mod err
- = throwDyn $ mkPlainErrMsg loc $ cannotFindModule dflags wanted_mod err
+ = throwErrMsg $ mkPlainErrMsg loc $ cannotFindModule dflags wanted_mod err
noHsFileErr :: SrcSpan -> String -> a
noHsFileErr loc path
- = throwDyn $ mkPlainErrMsg loc $ text "Can't find" <+> text path
+ = throwErrMsg $ mkPlainErrMsg loc $ text "Can't find" <+> text path
packageModErr :: ModuleName -> a
packageModErr mod
- = throwDyn $ mkPlainErrMsg noSrcSpan $
+ = throwErrMsg $ mkPlainErrMsg noSrcSpan $
text "module" <+> quotes (ppr mod) <+> text "is a package module"
multiRootsErr :: [ModSummary] -> IO ()
multiRootsErr [] = panic "multiRootsErr"
multiRootsErr summs@(summ1:_)
- = throwDyn $ mkPlainErrMsg noSrcSpan $
+ = throwErrMsg $ mkPlainErrMsg noSrcSpan $
text "module" <+> quotes (ppr mod) <+>
text "is defined in multiple files:" <+>
sep (map text files)
res <- findImportedModule hsc_env mod_name maybe_pkg
case res of
Found _ m | modulePackageId m /= this_pkg -> return m
- | otherwise -> throwDyn (CmdLineError (showSDoc $
+ | otherwise -> ghcError (CmdLineError (showSDoc $
text "module" <+> quotes (ppr (moduleName m)) <+>
text "is not loaded"))
err -> let msg = cannotFindModule dflags mod_name err in
- throwDyn (CmdLineError (showSDoc msg))
+ ghcError (CmdLineError (showSDoc msg))
#ifdef GHCI
getHistorySpan :: Session -> History -> IO SrcSpan
projects / ghc-hetmet.git / blobdiff