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{-# LANGUAGE BangPatterns #-}
module Main where
import GHC.ByteCode.Linker
import GHC.Core.Opt.Monad
import Data.Array
import GHC.Core.DataCon
import GHC
import GHC.Exts.Heap
import GHC.Driver.Ppr
import GHC.Linker.Loader
import GHC.Runtime.Heap.Inspect
import GHC.Tc.Utils.Env
import GHC.Core.Type
import GHC.Tc.Utils.Monad
import GHC.Tc.Utils.TcType
import Control.Applicative
import GHC.Types.Name (getOccString)
import Unsafe.Coerce
import Control.Monad
import Data.Maybe
import GHC.Data.Bag
import GHC.Utils.Outputable
import GHC.Driver.Monad
import X
import System.Environment
main :: IO ()
main = do [libdir] <- getArgs
runGhc (Just libdir) doit
doit :: Ghc ()
doit = do
dflags' <- getSessionDynFlags
primPackages <- setSessionDynFlags dflags'
dflags <- getSessionDynFlags
target <- guessTarget "X.hs" Nothing Nothing
setTargets [target]
load LoadAllTargets
() <- chaseConstructor (unsafeCoerce False)
() <- chaseConstructor (unsafeCoerce [1,2,3])
() <- chaseConstructor (unsafeCoerce (3 :-> 2))
() <- chaseConstructor (unsafeCoerce (4 :->. 4))
() <- chaseConstructor (unsafeCoerce (4 :->.+ 4))
return ()
chaseConstructor :: (GhcMonad m) => HValue -> m ()
chaseConstructor !hv = do
dflags <- getDynFlags
liftIO $ putStrLn "====="
closure <- liftIO $ getClosureData hv
case closure of
IndClosure{indirectee=ind} ->
(\(Box a) -> chaseConstructor (unsafeCoerce a)) ind
ConstrClosure{} -> do
withSession $ \hscEnv -> liftIO $ do
eDcname <- constrClosToName hscEnv closure
case eDcname of
Left _ -> return ()
Right dcName -> do
putStrLn $ "Name: " ++ showPpr dflags dcName
putStrLn $ "OccString: " ++ "'" ++ getOccString dcName ++ "'"
dc <- ioLookupDataCon hscEnv dcName
putStrLn $ "DataCon: " ++ showPpr dflags dc
_ -> return ()
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