module Language.Haskell.GhcMod.Gap (
Language.Haskell.GhcMod.Gap.ClsInst
, mkTarget
, withStyle
, setLogAction
, supportedExtensions
, getSrcSpan
, getSrcFile
, setCtx
, fOptions
, toStringBuffer
, liftIO
, showSeverityCaption
, setCabalPkg
, addDevPkgs
, filterOutChildren
, infoThing
, pprInfo
, HasType(..)
#if __GLASGOW_HASKELL__ >= 702
#else
, module Pretty
#endif
) where
import Control.Applicative hiding (empty)
import Control.Monad
import Data.List
import Data.Maybe
import Data.Time.Clock
import DynFlags
import ErrUtils
import FastString
import HscTypes
import Language.Haskell.GhcMod.GHCChoice
import Language.Haskell.GhcMod.Types hiding (convert)
import NameSet
import Outputable
import PprTyThing
import StringBuffer
import TcType
import qualified InstEnv
import qualified Pretty
import qualified StringBuffer as SB
#if __GLASGOW_HASKELL__ >= 707
import FamInstEnv
#endif
#if __GLASGOW_HASKELL__ >= 706
import GHC hiding (ClsInst)
#else
import GHC hiding (Instance)
#endif
#if __GLASGOW_HASKELL__ >= 702
import CoreMonad (liftIO)
#else
import HscTypes (liftIO)
import Pretty
#endif
#if __GLASGOW_HASKELL__ < 706
import Control.Arrow hiding ((<+>))
import Data.Convertible
#endif
#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
setCabalPkg :: DynFlags -> DynFlags
#if __GLASGOW_HASKELL__ >= 707
setCabalPkg dflag = gopt_set dflag Opt_BuildingCabalPackage
#else
setCabalPkg dflag = dopt_set dflag Opt_BuildingCabalPackage
#endif
addDevPkgs :: DynFlags -> [Package] -> DynFlags
addDevPkgs df pkgs = df''
where
#if __GLASGOW_HASKELL__ >= 707
df' = gopt_set df Opt_HideAllPackages
#else
df' = dopt_set df Opt_HideAllPackages
#endif
df'' = df' {
packageFlags = map ExposePackage pkgs ++ packageFlags df
}
class HasType a where
getType :: GhcMonad m => TypecheckedModule -> a -> m (Maybe (SrcSpan, Type))
instance HasType (LHsBind Id) where
#if __GLASGOW_HASKELL__ >= 707
getType _ (L spn FunBind{fun_matches = MG _ in_tys out_typ}) = return $ Just (spn, typ)
where typ = mkFunTys in_tys out_typ
#else
getType _ (L spn FunBind{fun_matches = MatchGroup _ typ}) = return $ Just (spn, typ)
#endif
getType _ _ = return Nothing
filterOutChildren :: (a -> TyThing) -> [a] -> [a]
filterOutChildren get_thing xs
= [x | x <- xs, not (getName (get_thing x) `elemNameSet` implicits)]
where
implicits = mkNameSet [getName t | x <- xs, t <- implicitTyThings (get_thing x)]
infoThing :: String -> Ghc SDoc
infoThing str = do
names <- parseName str
#if __GLASGOW_HASKELL__ >= 707
mb_stuffs <- mapM (getInfo False) names
let filtered = filterOutChildren (\(t,_f,_i,_fam) -> t) (catMaybes mb_stuffs)
#else
mb_stuffs <- mapM getInfo names
let filtered = filterOutChildren (\(t,_f,_i) -> t) (catMaybes mb_stuffs)
#endif
return $ vcat (intersperse (text "") $ map (pprInfo False) filtered)
#if __GLASGOW_HASKELL__ >= 707
pprInfo :: PrintExplicitForalls -> (TyThing, GHC.Fixity, [ClsInst], [FamInst]) -> SDoc
pprInfo pefas (thing, fixity, insts, famInsts)
= pprTyThingInContextLoc pefas thing
$$ show_fixity fixity
$$ InstEnv.pprInstances insts
$$ pprFamInsts famInsts
where
show_fixity fx
| fx == defaultFixity = Outputable.empty
| otherwise = ppr fx <+> ppr (getName thing)
#else
pprInfo :: PrintExplicitForalls -> (TyThing, GHC.Fixity, [ClsInst]) -> SDoc
pprInfo pefas (thing, fixity, insts)
= pprTyThingInContextLoc pefas thing
$$ show_fixity fixity
$$ vcat (map pprInstance insts)
where
show_fixity fx
| fx == defaultFixity = Outputable.empty
| otherwise = ppr fx <+> ppr (getName thing)
#endif