--
-----------------------------------------------------------------------------
-module Debugger (pprintClosureCommand, showTerm) where
+module Debugger (pprintClosureCommand, showTerm, pprTypeAndContents) where
import Linker
import RtClosureInspect
import HscTypes
import IdInfo
---import Id
+import Id
import Name
import Var hiding ( varName )
import VarSet
-import VarEnv
import Name
import UniqSupply
-import Type
import TcType
-import TcGadt
import GHC
-import GhciMonad
+import DynFlags
import InteractiveEval
import Outputable
-import Pretty ( Mode(..), showDocWith )
-import FastString
import SrcLoc
+import PprTyThing
-import Control.Exception
+import Exception
import Control.Monad
import Data.List
import Data.Maybe
import System.IO
import GHC.Exts
-#include "HsVersions.h"
-------------------------------------
-- | The :print & friends commands
-------------------------------------
pprintClosureCommand :: Session -> Bool -> Bool -> String -> IO ()
-pprintClosureCommand session bindThings force str = do
+pprintClosureCommand session bindThings force str = do
tythings <- (catMaybes . concat) `liftM`
- mapM (\w -> GHC.parseName session w >>=
+ mapM (\w -> GHC.parseName session w >>=
mapM (GHC.lookupName session))
(words str)
let ids = [id | AnId id <- tythings]
(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)
- return (term',subst)
+ let reconstructed_type = termType term
+ mb_subst <- withSession cms $ \hsc_env ->
+ improveRTTIType hsc_env (idType id) (reconstructed_type)
+ return (term', fromMaybe emptyTvSubst mb_subst)
tidyTermTyVars :: Session -> Term -> IO Term
tidyTermTyVars (Session ref) t = do
let env_tvs = ic_tyvars (hsc_IC hsc_env)
my_tvs = termTyVars t
tvs = env_tvs `minusVarSet` my_tvs
- tyvarOccName = nameOccName . tyVarName
+ 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
-bindSuspensions cms@(Session ref) t = do
+bindSuspensions cms@(Session ref) t = do
hsc_env <- readIORef ref
inScope <- GHC.getBindings cms
let ictxt = hsc_IC hsc_env
prefix = "_t"
alreadyUsedNames = map (occNameString . nameOccName . getName) inScope
- availNames = map ((prefix++) . show) [1..] \\ alreadyUsedNames
+ availNames = map ((prefix++) . show) [(1::Int)..] \\ alreadyUsedNames
availNames_var <- newIORef availNames
(t', stuff) <- foldTerm (nameSuspensionsAndGetInfos availNames_var) t
let (names, tys, hvals) = unzip3 stuff
where
-- Processing suspensions. Give names and recopilate info
- nameSuspensionsAndGetInfos :: IORef [String] ->
+ nameSuspensionsAndGetInfos :: IORef [String] ->
TermFold (IO (Term, [(Name,Type,HValue)]))
- nameSuspensionsAndGetInfos freeNames = TermFold
+ nameSuspensionsAndGetInfos freeNames = TermFold
{
fSuspension = doSuspension freeNames
- , fTerm = \ty dc v tt -> do
- tt' <- sequence tt
- let (terms,names) = unzip tt'
+ , fTerm = \ty dc v tt -> do
+ tt' <- sequence tt
+ 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 Nothing = do
+ doSuspension freeNames ct ty hval _name = do
name <- atomicModifyIORef freeNames (\x->(tail x, head x))
- n <- newGrimName cms name
- let ty' = fromMaybe (error "unexpected") mb_ty
- return (Suspension ct mb_ty hval (Just n), [(n,ty',hval)])
+ n <- newGrimName name
+ return (Suspension ct ty hval (Just n), [(n,ty,hval)])
-- A custom Term printer to enable the use of Show instances
-printTerm cms@(Session ref) = cPprTerm cPpr
+showTerm :: Session -> Term -> IO SDoc
+showTerm cms@(Session ref) term = do
+ dflags <- GHC.getSessionDynFlags cms
+ if dopt Opt_PrintEvldWithShow dflags
+ then cPprTerm (liftM2 (++) (\_y->[cPprShowable]) cPprTermBase) term
+ else cPprTerm cPprTermBase term
where
- cPpr = \p-> cPprShowable : cPprTermBase p
- cPprShowable prec t@Term{ty=ty, dc=dc, val=val} = do
- let hasType = isEmptyVarSet (tyVarsOfType ty) -- redundant
- isEvaled = isFullyEvaluatedTerm t
- if not isEvaled -- || not hasType
+ cPprShowable prec t@Term{ty=ty, val=val} =
+ if not (isFullyEvaluatedTerm t)
then return Nothing
- else do
+ else do
hsc_env <- readIORef ref
dflags <- GHC.getSessionDynFlags cms
do
(new_env, bname) <- bindToFreshName hsc_env ty "showme"
writeIORef ref (new_env)
- let noop_log _ _ _ _ = return ()
+ let noop_log _ _ _ _ = return ()
expr = "show " ++ showSDoc (ppr bname)
GHC.setSessionDynFlags cms dflags{log_action=noop_log}
- mb_txt <- withExtendedLinkEnv [(bname, val)]
+ mb_txt <- withExtendedLinkEnv [(bname, val)]
(GHC.compileExpr cms expr)
let myprec = 10 -- application precedence. TODO Infix constructors
- case mb_txt of
- Just txt_ | txt <- unsafeCoerce# txt_, not (null txt)
- -> return $ Just$ cparen (prec >= myprec &&
- needsParens txt)
+ case mb_txt of
+ Just txt_ | txt <- unsafeCoerce# txt_, not (null txt)
+ -> return $ Just$ cparen (prec >= myprec &&
+ needsParens txt)
(text txt)
_ -> return Nothing
- `finally` do
+ `finally` do
writeIORef ref hsc_env
GHC.setSessionDynFlags cms dflags
- needsParens ('"':txt) = False -- some simple heuristics to see whether parens
+ cPprShowable prec NewtypeWrap{ty=new_ty,wrapped_term=t} =
+ cPprShowable prec t{ty=new_ty}
+ cPprShowable _ _ = return Nothing
+
+ needsParens ('"':_) = False -- some simple heuristics to see whether parens
-- are redundant in an arbitrary Show output
- needsParens ('(':txt) = False
+ needsParens ('(':_) = False
needsParens txt = ' ' `elem` txt
-
+
bindToFreshName hsc_env ty userName = do
- name <- newGrimName cms userName
+ name <- newGrimName userName
let ictxt = hsc_IC hsc_env
tmp_ids = ic_tmp_ids ictxt
id = mkGlobalId VanillaGlobal name (sigmaType ty) vanillaIdInfo
return (hsc_env {hsc_IC = new_ic }, name)
-- Create new uniques and give them sequentially numbered names
--- newGrimName :: Session -> String -> IO Name
-newGrimName cms userName = do
+newGrimName :: String -> IO Name
+newGrimName userName = do
us <- mkSplitUniqSupply 'b'
let unique = uniqFromSupply us
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
projects / ghc-hetmet.git / blobdiff