ghc-mod/GHCApi.hs
2012-12-07 14:27:02 +09:00

79 lines
2.5 KiB
Haskell

module GHCApi where
import Control.Applicative
import Control.Exception
import CoreMonad
import DynFlags
import ErrMsg
import Exception
import GHC
import GHC.Paths (libdir)
import System.Exit
import System.IO
import Types
----------------------------------------------------------------
withGHC :: Alternative m => Ghc (m a) -> IO (m a)
withGHC = withGHC' "Dummy"
withGHC' :: Alternative m => FilePath -> Ghc (m a) -> IO (m a)
withGHC' file body = ghandle ignore $ runGhc (Just libdir) $ do
dflags <- getSessionDynFlags
defaultCleanupHandler dflags body
where
ignore :: Alternative m => SomeException -> IO (m a)
ignore e = do
hPutStr stderr $ file ++ ":0:0:Error:"
hPrint stderr e
exitSuccess
----------------------------------------------------------------
initSession0 :: Options -> Ghc [PackageId]
initSession0 opt = getSessionDynFlags >>=
(>>= setSessionDynFlags) . setGhcFlags opt
initSession :: Options -> [String] -> [FilePath] -> Maybe [String] -> Bool -> Ghc LogReader
initSession opt cmdOpts idirs mayPkgs logging = do
dflags <- getSessionDynFlags
let opts = map noLoc cmdOpts
(dflags',_,_) <- parseDynamicFlags dflags opts
(dflags'',readLog) <- liftIO . (>>= setLogger logging)
. setGhcFlags opt . setFlags opt dflags' idirs $ mayPkgs
_ <- setSessionDynFlags dflags''
return readLog
----------------------------------------------------------------
setFlags :: Options -> DynFlags -> [FilePath] -> Maybe [String] -> DynFlags
setFlags opt d idirs mayPkgs
| expandSplice opt = dopt_set d' Opt_D_dump_splices
| otherwise = d'
where
d' = maySetExpose $ d {
importPaths = idirs
, ghcLink = LinkInMemory
, hscTarget = HscInterpreted
, flags = flags d
}
-- Do hide-all only when depend packages specified
maySetExpose df = maybe df (\x -> (dopt_set df Opt_HideAllPackages) {
packageFlags = map ExposePackage x ++ packageFlags df
}) mayPkgs
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]