78 lines
2.8 KiB
Haskell
78 lines
2.8 KiB
Haskell
{-# LANGUAGE TupleSections, FlexibleInstances, Rank2Types #-}
|
|
{-# OPTIONS_GHC -fno-warn-orphans #-}
|
|
|
|
module Language.Haskell.GhcMod.SrcUtils where
|
|
|
|
import Control.Applicative ((<$>))
|
|
import CoreMonad (liftIO)
|
|
import CoreUtils (exprType)
|
|
import Data.Generics
|
|
import Data.Maybe (fromMaybe)
|
|
import Data.Ord as O
|
|
import GHC (Ghc, LHsExpr, LPat, Id, DynFlags, SrcSpan, Type, Located, ParsedSource, RenamedSource, TypecheckedSource, GenLocated(L))
|
|
import qualified GHC as G
|
|
import GHC.SYB.Utils (Stage(..), everythingStaged)
|
|
import Language.Haskell.GhcMod.Doc (showOneLine, getStyle)
|
|
import Language.Haskell.GhcMod.GHCApi
|
|
import Language.Haskell.GhcMod.Gap (HasType(..), setWarnTypedHoles, setDeferTypeErrors)
|
|
import qualified Language.Haskell.GhcMod.Gap as Gap
|
|
import Outputable (PprStyle)
|
|
import TcHsSyn (hsPatType)
|
|
|
|
----------------------------------------------------------------
|
|
|
|
instance HasType (LHsExpr Id) where
|
|
getType tcm e = do
|
|
hs_env <- G.getSession
|
|
mbe <- liftIO $ Gap.deSugar tcm e hs_env
|
|
return $ (G.getLoc e, ) <$> CoreUtils.exprType <$> mbe
|
|
|
|
instance HasType (LPat Id) where
|
|
getType _ (G.L spn pat) = return $ Just (spn, hsPatType pat)
|
|
|
|
----------------------------------------------------------------
|
|
|
|
listifySpans :: Typeable a => TypecheckedSource -> (Int, Int) -> [Located a]
|
|
listifySpans tcs lc = listifyStaged TypeChecker p tcs
|
|
where
|
|
p (L spn _) = G.isGoodSrcSpan spn && spn `G.spans` lc
|
|
|
|
listifyParsedSpans :: Typeable a => ParsedSource -> (Int, Int) -> [Located a]
|
|
listifyParsedSpans pcs lc = listifyStaged Parser p pcs
|
|
where
|
|
p (L spn _) = G.isGoodSrcSpan spn && spn `G.spans` lc
|
|
|
|
listifyRenamedSpans :: Typeable a => RenamedSource -> (Int, Int) -> [Located a]
|
|
listifyRenamedSpans pcs lc = listifyStaged Renamer p pcs
|
|
where
|
|
p (L spn _) = G.isGoodSrcSpan spn && spn `G.spans` lc
|
|
|
|
listifyStaged :: Typeable r => Stage -> (r -> Bool) -> GenericQ [r]
|
|
listifyStaged s p = everythingStaged s (++) [] ([] `mkQ` (\x -> [x | p x]))
|
|
|
|
cmp :: SrcSpan -> SrcSpan -> Ordering
|
|
cmp a b
|
|
| a `G.isSubspanOf` b = O.LT
|
|
| b `G.isSubspanOf` a = O.GT
|
|
| otherwise = O.EQ
|
|
|
|
toTup :: DynFlags -> PprStyle -> (SrcSpan, Type) -> ((Int,Int,Int,Int),String)
|
|
toTup dflag style (spn, typ) = (fourInts spn, pretty dflag style typ)
|
|
|
|
fourInts :: SrcSpan -> (Int,Int,Int,Int)
|
|
fourInts = fromMaybe (0,0,0,0) . Gap.getSrcSpan
|
|
|
|
pretty :: DynFlags -> PprStyle -> Type -> String
|
|
pretty dflag style = showOneLine dflag style . Gap.typeForUser
|
|
|
|
----------------------------------------------------------------
|
|
|
|
inModuleContext :: FilePath -> (DynFlags -> PprStyle -> Ghc a) -> Ghc a
|
|
inModuleContext file action =
|
|
withDynFlags (setWarnTypedHoles . setDeferTypeErrors . setNoWaringFlags) $ do
|
|
setTargetFiles [file]
|
|
Gap.withContext $ do
|
|
dflag <- G.getSessionDynFlags
|
|
style <- getStyle
|
|
action dflag style
|