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{-# LANGUAGE CPP #-}
module Gap (
Gap.ClsInst
, mkTarget
, withStyle
, setLogAction
, supportedExtensions
, getSrcSpan
, getSrcFile
, setCtx
, fOptions
, toStringBuffer
, liftIO
, showSeverityCaption
#if __GLASGOW_HASKELL__ >= 702
#else
, module Pretty
#endif
) where
import Control.Applicative hiding (empty)
import Control.Monad
import Data.Time.Clock
import DynFlags
import ErrUtils
import FastString
import GHC
import GHCChoice
import Outputable
import StringBuffer
import qualified InstEnv
import qualified Pretty
import qualified StringBuffer as SB
#if __GLASGOW_HASKELL__ >= 702
import CoreMonad (liftIO)
#else
import HscTypes (liftIO)
import Pretty
#endif
#if __GLASGOW_HASKELL__ < 706
import Control.Arrow
import Data.Convertible
#endif
{-
pretty :: Outputable a => a -> String
pretty = showSDocForUser neverQualify . ppr
debug :: Outputable a => a -> b -> b
debug x v = trace (pretty x) v
-}
----------------------------------------------------------------
----------------------------------------------------------------
--
#if __GLASGOW_HASKELL__ >= 706
type ClsInst = InstEnv.ClsInst
#else
type ClsInst = InstEnv.Instance
#endif
mkTarget :: TargetId -> Bool -> Maybe (SB.StringBuffer, UTCTime) -> Target
#if __GLASGOW_HASKELL__ >= 706
mkTarget = Target
#else
mkTarget tid allowObjCode = Target tid allowObjCode . (fmap . second) convert
#endif
----------------------------------------------------------------
----------------------------------------------------------------
withStyle :: DynFlags -> PprStyle -> SDoc -> Pretty.Doc
#if __GLASGOW_HASKELL__ >= 706
withStyle = withPprStyleDoc
#else
withStyle _ = withPprStyleDoc
#endif
setLogAction :: DynFlags
-> (DynFlags -> Severity -> SrcSpan -> PprStyle -> SDoc -> IO ())
-> DynFlags
setLogAction df f =
#if __GLASGOW_HASKELL__ >= 706
df { log_action = f }
#else
df { log_action = f df }
#endif
----------------------------------------------------------------
----------------------------------------------------------------
supportedExtensions :: [String]
#if __GLASGOW_HASKELL__ >= 700
supportedExtensions = supportedLanguagesAndExtensions
#else
supportedExtensions = supportedLanguages
#endif
----------------------------------------------------------------
----------------------------------------------------------------
getSrcSpan :: SrcSpan -> Maybe (Int,Int,Int,Int)
#if __GLASGOW_HASKELL__ >= 702
getSrcSpan (RealSrcSpan spn)
#else
getSrcSpan spn | isGoodSrcSpan spn
#endif
= Just (srcSpanStartLine spn
, srcSpanStartCol spn
, srcSpanEndLine spn
, srcSpanEndCol spn)
getSrcSpan _ = Nothing
getSrcFile :: SrcSpan -> Maybe String
#if __GLASGOW_HASKELL__ >= 702
getSrcFile (RealSrcSpan spn) = Just . unpackFS . srcSpanFile $ spn
#else
getSrcFile spn | isGoodSrcSpan spn = Just . unpackFS . srcSpanFile $ spn
#endif
getSrcFile _ = Nothing
----------------------------------------------------------------
toStringBuffer :: [String] -> Ghc StringBuffer
#if __GLASGOW_HASKELL__ >= 702
toStringBuffer = return . stringToStringBuffer . unlines
#else
toStringBuffer = liftIO . stringToStringBuffer . unlines
#endif
----------------------------------------------------------------
fOptions :: [String]
#if __GLASGOW_HASKELL__ >= 704
fOptions = [option | (option,_,_) <- fFlags]
++ [option | (option,_,_) <- fWarningFlags]
++ [option | (option,_,_) <- fLangFlags]
#elif __GLASGOW_HASKELL__ == 702
fOptions = [option | (option,_,_,_) <- fFlags]
#else
fOptions = [option | (option,_,_) <- fFlags]
#endif
----------------------------------------------------------------
----------------------------------------------------------------
setCtx :: [ModSummary] -> Ghc Bool
#if __GLASGOW_HASKELL__ >= 704
setCtx ms = do
#if __GLASGOW_HASKELL__ >= 706
let modName = IIModule . moduleName . ms_mod
#else
let modName = IIModule . ms_mod
#endif
top <- map modName <$> filterM isTop ms
setContext top
return (not . null $ top)
#else
setCtx ms = do
top <- map ms_mod <$> filterM isTop ms
setContext top []
return (not . null $ top)
#endif
where
isTop mos = lookupMod ||> returnFalse
where
lookupMod = lookupModule (ms_mod_name mos) Nothing >> return True
returnFalse = return False
showSeverityCaption :: Severity -> String
#if __GLASGOW_HASKELL__ >= 706
showSeverityCaption SevWarning = "Warning: "
showSeverityCaption _ = ""
#else
showSeverityCaption = const ""
#endif
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