ghc-mod/GHCApi.hs
2012-03-24 12:58:02 +09:00

67 lines
1.9 KiB
Haskell

module GHCApi where
import Control.Exception
import Control.Applicative
import CoreMonad
import DynFlags
import ErrMsg
import Exception
import GHC
import GHC.Paths (libdir)
import Types
----------------------------------------------------------------
withGHC :: Alternative m => Ghc (m a) -> IO (m a)
withGHC body = ghandle ignore $ runGhc (Just libdir) $ do
dflags <- getSessionDynFlags
defaultCleanupHandler dflags body
where
ignore :: Alternative m => SomeException -> IO (m a)
ignore _ = return empty
----------------------------------------------------------------
initSession0 :: Options -> Ghc [PackageId]
initSession0 opt = getSessionDynFlags >>=
(>>= setSessionDynFlags) . setGhcFlags opt
initSession :: Options -> [String] -> [FilePath] -> Bool -> Ghc LogReader
initSession opt cmdOpts idirs logging = do
dflags <- getSessionDynFlags
let opts = map noLoc cmdOpts
(dflags',_,_) <- parseDynamicFlags dflags opts
(dflags'',readLog) <- liftIO . (>>= setLogger logging) . setGhcFlags opt . setFlags opt dflags' $ idirs
setSessionDynFlags dflags''
return readLog
----------------------------------------------------------------
setFlags :: Options -> DynFlags -> [FilePath] -> DynFlags
setFlags opt d idirs
| expandSplice opt = dopt_set d' Opt_D_dump_splices
| otherwise = d'
where
d' = d {
packageFlags = ghcPackage : packageFlags d
, importPaths = idirs
, ghcLink = LinkInMemory
, hscTarget = HscInterpreted
, flags = flags d
}
ghcPackage :: PackageFlag
ghcPackage = ExposePackage "ghc"
setGhcFlags :: Monad m => Options -> DynFlags -> m DynFlags
setGhcFlags opt flagset =
do (flagset',_,_) <- parseDynamicFlags flagset (map noLoc (ghcOpts opt))
return flagset'
----------------------------------------------------------------
setTargetFile :: (GhcMonad m) => String -> m ()
setTargetFile file = do
target <- guessTarget file Nothing
setTargets [target]