109 lines
3.2 KiB
Haskell
109 lines
3.2 KiB
Haskell
{-# LANGUAGE TemplateHaskell #-}
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module Language.Haskell.GhcMod.DynFlags where
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import Control.Applicative
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import Control.Monad
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import GHC
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import qualified GHC as G
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import GHC.Paths (libdir)
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import qualified Language.Haskell.GhcMod.Gap as Gap
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import Language.Haskell.GhcMod.Types
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import Language.Haskell.GhcMod.DebugLogger
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import Language.Haskell.GhcMod.DynFlagsTH
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import System.IO.Unsafe (unsafePerformIO)
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import Prelude
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setEmptyLogger :: DynFlags -> DynFlags
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setEmptyLogger df =
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Gap.setLogAction df $ \_ _ _ _ _ _ -> return ()
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setDebugLogger :: (String -> IO ()) -> DynFlags -> DynFlags
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setDebugLogger put df = do
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Gap.setLogAction df (debugLogAction put)
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-- * Fast
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-- * Friendly to foreign export
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-- * Not friendly to -XTemplateHaskell and -XPatternSynonyms
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-- * Uses little memory
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setHscNothing :: DynFlags -> DynFlags
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setHscNothing df = df {
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ghcMode = CompManager
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, ghcLink = NoLink
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, hscTarget = HscNothing
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, optLevel = 0
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}
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-- * Slow
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-- * Not friendly to foreign export
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-- * Friendly to -XTemplateHaskell and -XPatternSynonyms
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-- * Uses lots of memory
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setHscInterpreted :: DynFlags -> DynFlags
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setHscInterpreted df = df {
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ghcMode = CompManager
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, ghcLink = LinkInMemory
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, hscTarget = HscInterpreted
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, optLevel = 0
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}
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-- | Parse command line ghc options and add them to the 'DynFlags' passed
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addCmdOpts :: GhcMonad m => [GHCOption] -> DynFlags -> m DynFlags
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addCmdOpts cmdOpts df =
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fst3 <$> G.parseDynamicFlags df (map G.noLoc cmdOpts)
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where
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fst3 (a,_,_) = a
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----------------------------------------------------------------
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withDynFlags :: GhcMonad m
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=> (DynFlags -> DynFlags)
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-> m a
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-> m a
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withDynFlags setFlags body = G.gbracket setup teardown (\_ -> body)
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where
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setup = do
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dflags <- G.getSessionDynFlags
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void $ G.setSessionDynFlags (setFlags dflags)
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return dflags
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teardown = void . G.setSessionDynFlags
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withCmdFlags :: GhcMonad m => [GHCOption] -> m a -> m a
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withCmdFlags flags body = G.gbracket setup teardown (\_ -> body)
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where
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setup = do
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dflags <- G.getSessionDynFlags
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void $ G.setSessionDynFlags =<< addCmdOpts flags dflags
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return dflags
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teardown = void . G.setSessionDynFlags
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----------------------------------------------------------------
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-- | Set 'DynFlags' equivalent to "-w:".
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setNoWarningFlags :: DynFlags -> DynFlags
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setNoWarningFlags df = df { warningFlags = Gap.emptyWarnFlags}
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-- | Set 'DynFlags' equivalent to "-Wall".
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setAllWarningFlags :: DynFlags -> DynFlags
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setAllWarningFlags df = df { warningFlags = allWarningFlags }
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allWarningFlags :: Gap.WarnFlags
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allWarningFlags = unsafePerformIO $
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G.runGhc (Just libdir) $ do
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df <- G.getSessionDynFlags
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df' <- addCmdOpts ["-Wall"] df
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return $ G.warningFlags df'
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----------------------------------------------------------------
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deferErrors :: Monad m => DynFlags -> m DynFlags
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deferErrors df = return $
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Gap.setWarnTypedHoles $ Gap.setDeferTypedHoles $
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Gap.setDeferTypeErrors $ setNoWarningFlags df
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----------------------------------------------------------------
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deriveEqDynFlags [d|
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eqDynFlags :: DynFlags -> DynFlags -> Bool
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eqDynFlags = undefined
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|]
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