--
-----------------------------------------------------------------------------
-module Debugger (pprintClosureCommand, showTerm) where
+module Debugger (pprintClosureCommand, showTerm, pprTypeAndContents) where
import Linker
import RtClosureInspect
import VarSet
import Name
import UniqSupply
-import Type
+import TcType
import GHC
+import DynFlags
import InteractiveEval
import Outputable
-import Pretty ( Mode(..), showDocWith )
import SrcLoc
+import PprTyThing
import Control.Exception
import Control.Monad
(map skolemiseSubst substs)}
-- Finally, print the Terms
unqual <- GHC.getPrintUnqual session
- let showSDocForUserOneLine unqual doc =
- showDocWith LeftMode (doc (mkErrStyle unqual))
docterms <- mapM (showTerm session) terms
- (putStrLn . showSDocForUserOneLine unqual . vcat)
+ (printForUser stdout unqual . vcat)
(zipWith (\id docterm -> ppr id <+> char '=' <+> docterm)
ids
docterms)
go cms id = do
term_ <- GHC.obtainTerm cms force id
term <- tidyTermTyVars cms term_
- term' <- if not bindThings then return term
- else bindSuspensions cms term
+ term' <- if bindThings &&
+ False == isUnliftedTypeKind (termType term)
+ then bindSuspensions cms term
+ else return term
-- Before leaving, we compare the type obtained to see if it's more specific
-- Then, we extract a substitution,
-- mapping the old tyvars to the reconstructed types.
- let Just reconstructed_type = termType term
- Just subst = computeRTTIsubst (idType id) (reconstructed_type)
+ let reconstructed_type = termType term
+ subst = unifyRTTI (idType id) (reconstructed_type)
return (term',subst)
tidyTermTyVars :: Session -> Term -> IO Term
let (terms,names) = unzip tt'
return (Term ty dc v terms, concat names)
, fPrim = \ty n ->return (Prim ty n,[])
+ , fNewtypeWrap =
+ \ty dc t -> do
+ (term, names) <- t
+ return (NewtypeWrap ty dc term, names)
+ , fRefWrap = \ty t -> do
+ (term, names) <- t
+ return (RefWrap ty term, names)
}
- doSuspension freeNames ct mb_ty hval _name = do
+ doSuspension freeNames ct ty hval _name = do
name <- atomicModifyIORef freeNames (\x->(tail x, head x))
n <- newGrimName name
- let ty' = fromMaybe (error "unexpected") mb_ty
- return (Suspension ct mb_ty hval (Just n), [(n,ty',hval)])
+ return (Suspension ct ty hval (Just n), [(n,ty,hval)])
-- A custom Term printer to enable the use of Show instances
showTerm :: Session -> Term -> IO SDoc
showTerm cms@(Session ref) term = do
- cPprExtended <- cPprTermExtended cms
- cPprTerm (liftM2 (++) cPprShowable cPprExtended) term
+ dflags <- GHC.getSessionDynFlags cms
+ if dopt Opt_PrintEvldWithShow dflags
+ then cPprTerm (liftM2 (++) (\_y->[cPprShowable]) cPprTermBase) term
+ else cPprTerm cPprTermBase term
where
- cPprShowable _y = [\prec ty _ val tt ->
- if not (all isFullyEvaluatedTerm tt)
+ cPprShowable prec t@Term{ty=ty, val=val} =
+ if not (isFullyEvaluatedTerm t)
then return Nothing
else do
hsc_env <- readIORef ref
_ -> return Nothing
`finally` do
writeIORef ref hsc_env
- GHC.setSessionDynFlags cms dflags]
+ GHC.setSessionDynFlags cms dflags
+ cPprShowable prec NewtypeWrap{ty=new_ty,wrapped_term=t} =
+ cPprShowable prec t{ty=new_ty}
+ cPprShowable prec RefWrap{wrapped_term=t} = cPprShowable prec t
+ cPprShowable _ _ = return Nothing
+
needsParens ('"':_) = False -- some simple heuristics to see whether parens
-- are redundant in an arbitrary Show output
needsParens ('(':_) = False
new_ic = ictxt { ic_tmp_ids = id : tmp_ids }
return (hsc_env {hsc_IC = new_ic }, name)
-{- | A custom Term printer to handle some types that
- we may not want to show, such as Data.Typeable.TypeRep -}
-cPprTermExtended :: Monad m => Session -> IO (CustomTermPrinter m)
-cPprTermExtended session = liftM22 (++) (return cPprTermBase) extended
- where
- extended = do
- [typerep_name] <- parseName session "Data.Typeable.TypeRep"
- Just (ATyCon typerep) <- lookupName session typerep_name
-
- return (\_y ->
- [ ifType (isTyCon typerep) (\_val _prec -> return (text "<typerep>")) ])
-
- ifType pred f prec ty _ val _tt
- | pred ty = Just `liftM` f prec val
- | otherwise = return Nothing
- isTyCon a_tc ty = fromMaybe False $ do
- (tc,_) <- splitTyConApp_maybe ty
- return (a_tc == tc)
- liftM22 f x y = do x' <- x; y' <- y
- return$ do x'' <- x';y'' <- y';return (f x'' y'')
-
-- Create new uniques and give them sequentially numbered names
newGrimName :: String -> IO Name
newGrimName userName = do
occname = mkOccName varName userName
name = mkInternalName unique occname noSrcSpan
return name
+
+pprTypeAndContents :: Session -> [Id] -> IO SDoc
+pprTypeAndContents session ids = do
+ dflags <- GHC.getSessionDynFlags session
+ let pefas = dopt Opt_PrintExplicitForalls dflags
+ pcontents = dopt Opt_PrintBindContents dflags
+ if pcontents
+ then do
+ let depthBound = 100
+ terms <- mapM (GHC.obtainTermB session depthBound False) ids
+ docs_terms <- mapM (showTerm session) terms
+ return $ vcat $ zipWith (\ty cts -> ty <+> equals <+> cts)
+ (map (pprTyThing pefas . AnId) ids)
+ docs_terms
+ else return $ vcat $ map (pprTyThing pefas . AnId) ids