import Linker
import RtClosureInspect
-import PrelNames
import HscTypes
import IdInfo
--import Id
+import Name
import Var hiding ( varName )
import VarSet
import VarEnv
import Name
-import NameEnv
-import RdrName
import UniqSupply
import Type
import TcType
-import TyCon
import TcGadt
import GHC
-import GhciMonad
import Outputable
import Pretty ( Mode(..), showDocWith )
-------------------------------------
-- | The :print & friends commands
-------------------------------------
-pprintClosureCommand :: Bool -> Bool -> String -> GHCi ()
-pprintClosureCommand bindThings force str = do
- cms <- getSession
+pprintClosureCommand :: Session -> Bool -> Bool -> String -> IO ()
+pprintClosureCommand session bindThings force str = do
tythings <- (catMaybes . concat) `liftM`
- mapM (\w -> io(GHC.parseName cms w >>=
- mapM (GHC.lookupName cms)))
+ mapM (\w -> GHC.parseName session w >>=
+ mapM (GHC.lookupName session))
(words str)
- substs <- catMaybes `liftM` mapM (io . go cms)
+ substs <- catMaybes `liftM` mapM (go session)
[id | AnId id <- tythings]
- mapM (io . applySubstToEnv cms . skolemSubst) substs
+ mapM (applySubstToEnv session . skolemSubst) substs
return ()
where
- -- Do the obtainTerm--bindSuspensions-refineIdType dance
- -- Warning! This function got a good deal of side-effects
+ -- Do the obtainTerm--bindSuspensions-computeSubstitution dance
go :: Session -> Id -> IO (Maybe TvSubst)
- go cms id = do
- mb_term <- obtainTerm cms force id
- maybe (return Nothing) `flip` mb_term $ \term -> do
+ go cms id = do
+ term_ <- obtainTerm cms force id
+ term <- tidyTermTyVars cms term_
term' <- if not bindThings then return term
else bindSuspensions cms term
showterm <- printTerm cms term'
-- Then, we extract a substitution,
-- mapping the old tyvars to the reconstructed types.
let Just reconstructed_type = termType term
- mb_subst = tcUnifyTys (const BindMe) [idType id] [reconstructed_type]
- ASSERT (isJust mb_subst) return mb_subst
+
+ -- tcUnifyTys doesn't look through forall's, so we drop them from
+ -- the original type, instead of sigma-typing the reconstructed type
+ -- In addition, we strip newtypes too, since the reconstructed type might
+ -- not have recovered them all
+ mb_subst = tcUnifyTys (const BindMe)
+ [repType' $ dropForAlls$ idType id]
+ [repType' $ reconstructed_type]
+
+ ASSERT2 (isJust mb_subst, ppr reconstructed_type $$ (ppr$ idType id))
+ return mb_subst
applySubstToEnv :: Session -> TvSubst -> IO ()
applySubstToEnv cms subst | isEmptyTvSubst subst = return ()
hsc_env <- readIORef ref
inScope <- GHC.getBindings cms
let ictxt = hsc_IC hsc_env
- type_env = ic_type_env ictxt
- ids = typeEnvIds type_env
+ ids = ic_tmp_ids ictxt
ids' = map (\id -> id `setIdType` substTy subst (idType id)) ids
- type_env'= extendTypeEnvWithIds type_env ids'
- ictxt' = ictxt { ic_type_env = type_env' }
+ subst_dom= varEnvKeys$ getTvSubstEnv subst
+ subst_ran= varEnvElts$ getTvSubstEnv subst
+ new_tvs = [ tv | Just tv <- map getTyVar_maybe subst_ran]
+ ic_tyvars'= (`delVarSetListByKey` subst_dom)
+ . (`extendVarSetList` new_tvs)
+ $ ic_tyvars ictxt
+ ictxt' = ictxt { ic_tmp_ids = ids'
+ , ic_tyvars = ic_tyvars' }
writeIORef ref (hsc_env {hsc_IC = ictxt'})
+ where delVarSetListByKey = foldl' delVarSetByKey
+
+ tidyTermTyVars :: Session -> Term -> IO Term
+ tidyTermTyVars (Session ref) t = do
+ hsc_env <- readIORef ref
+ let env_tvs = ic_tyvars (hsc_IC hsc_env)
+ my_tvs = termTyVars t
+ tvs = env_tvs `minusVarSet` my_tvs
+ tyvarOccName = nameOccName . tyVarName
+ tidyEnv = (initTidyOccEnv (map tyvarOccName (varSetElems tvs))
+ , env_tvs `intersectVarSet` my_tvs)
+ return$ mapTermType (snd . tidyOpenType tidyEnv) t
+
-- | Give names, and bind in the interactive environment, to all the suspensions
-- included (inductively) in a term
bindSuspensions :: Session -> Term -> IO Term
hsc_env <- readIORef ref
inScope <- GHC.getBindings cms
let ictxt = hsc_IC hsc_env
- type_env = ic_type_env ictxt
prefix = "_t"
alreadyUsedNames = map (occNameString . nameOccName . getName) inScope
availNames = map ((prefix++) . show) [1..] \\ alreadyUsedNames
let ids = [ mkGlobalId VanillaGlobal name ty vanillaIdInfo
| (name,ty) <- zip names tys']
new_tyvars = tyVarsOfTypes tys'
- new_type_env = extendTypeEnvWithIds type_env ids
- old_tyvars = ic_tyvars ictxt
- new_ic = ictxt { ic_type_env = new_type_env,
- ic_tyvars = old_tyvars `unionVarSet` new_tyvars }
+ new_ic = extendInteractiveContext ictxt ids new_tyvars
extendLinkEnv (zip names hvals)
writeIORef ref (hsc_env {hsc_IC = new_ic })
return t'
- where
+ where
-- Processing suspensions. Give names and recopilate info
nameSuspensionsAndGetInfos :: IORef [String] -> TermFold (IO (Term, [(Name,Type,HValue)]))
bindToFreshName hsc_env ty userName = do
name <- newGrimName cms userName
let ictxt = hsc_IC hsc_env
- type_env = ic_type_env ictxt
+ tmp_ids = ic_tmp_ids ictxt
id = mkGlobalId VanillaGlobal name ty vanillaIdInfo
- new_type_env = extendTypeEnv type_env (AnId id)
- new_ic = ictxt { ic_type_env = new_type_env }
+ new_ic = ictxt { ic_tmp_ids = id : tmp_ids }
return (hsc_env {hsc_IC = new_ic }, name)
-- Create new uniques and give them sequentially numbered names
us <- mkSplitUniqSupply 'b'
let unique = uniqFromSupply us
occname = mkOccName varName userName
- name = mkInternalName unique occname noSrcLoc
+ name = mkInternalName unique occname noSrcSpan
return name
skolemSubst subst = subst `setTvSubstEnv`
, tyvars' <- map (mkTyVarTy . mk_skol_tv) tyvars
= substTyWith tyvars tyvars' ty
mk_skol_tv tv = mkTcTyVar (tyVarName tv) (tyVarKind tv)
- (SkolemTv UnkSkol)
+ (SkolemTv RuntimeUnkSkol)