import HscTypes
import ListSetOps
import Outputable
-import Breakpoints
#ifdef GHCI
import Linker
import IdInfo
import {- Kind parts of -} Type
import BasicTypes
-import Data.Maybe
#endif
import FastString
import Control.Monad ( unless )
import Data.Maybe ( isJust )
+import Foreign.Ptr ( Ptr )
+
\end{code}
-- Must be done after processing the exports
tcg_env <- checkHiBootIface tcg_env boot_iface ;
+ -- Make the new type env available to stuff slurped from interface files
+ -- Must do this after checkHiBootIface, because the latter might add new
+ -- bindings for boot_dfuns, which may be mentioned in imported unfoldings
+ writeMutVar (tcg_type_env_var tcg_env) (tcg_type_env tcg_env) ;
+
-- Rename the Haddock documentation
tcg_env <- rnHaddock module_info maybe_doc tcg_env ;
mg_deprecs = NoDeprecs,
mg_foreign = NoStubs,
mg_hpc_info = noHpcInfo,
- mg_dbg_sites = noDbgSites
+ mg_modBreaks = emptyModBreaks
} } ;
tcCoreDump mod_guts ;
tcg_rules = rules',
tcg_fords = fords' } } ;
- -- Make the new type env available to stuff slurped from interface files
- writeMutVar (tcg_type_env_var tcg_env) final_type_env ;
-
return (tcg_env' { tcg_binds = tcg_binds tcg_env' })
}
; mapM_ check_export boot_exports
-- Check instance declarations
- ; dfun_binds <- mapM check_inst boot_insts
+ ; mb_dfun_prs <- mapM check_inst boot_insts
+ ; let tcg_env' = tcg_env { tcg_binds = binds `unionBags` dfun_binds,
+ tcg_type_env = extendTypeEnvWithIds local_type_env boot_dfuns }
+ dfun_prs = catMaybes mb_dfun_prs
+ boot_dfuns = map fst dfun_prs
+ dfun_binds = listToBag [ noLoc $ VarBind boot_dfun (nlHsVar dfun)
+ | (boot_dfun, dfun) <- dfun_prs ]
-- Check for no family instances
; unless (null boot_fam_insts) $
-- be the equivalent to the dfun bindings returned for class
-- instances? We can't easily equate tycons...
- ; return (tcg_env { tcg_binds = binds `unionBags` unionManyBags dfun_binds }) }
+ ; return tcg_env' }
where
check_export boot_avail -- boot_avail is exported by the boot iface
| name `elem` dfun_names = return ()
local_export_env :: NameEnv AvailInfo
local_export_env = availsToNameEnv local_exports
+ check_inst :: Instance -> TcM (Maybe (Id, Id))
+ -- Returns a pair of the boot dfun in terms of the equivalent real dfun
check_inst boot_inst
= case [dfun | inst <- local_insts,
let dfun = instanceDFunId inst,
idType dfun `tcEqType` boot_inst_ty ] of
- [] -> do { addErrTc (instMisMatch boot_inst); return emptyBag }
- (dfun:_) -> return (unitBag $ noLoc $ VarBind local_boot_dfun (nlHsVar dfun))
+ [] -> do { addErrTc (instMisMatch boot_inst); return Nothing }
+ (dfun:_) -> return (Just (local_boot_dfun, dfun))
where
boot_dfun = instanceDFunId boot_inst
boot_inst_ty = idType boot_dfun
-- We also typecheck any extra binds that came out
-- of the "deriving" process (deriv_binds)
traceTc (text "Tc5") ;
- (tc_val_binds, tcl_env) <- tcTopBinds (val_binds `plusHsValBinds` deriv_binds) ;
+ (tc_val_binds, tcl_env) <- tcTopBinds val_binds ;
setLclTypeEnv tcl_env $ do {
+ -- Now GHC-generated derived bindings and generics
+ -- Do not generate warnings from compiler-generated code
+ (tc_deriv_binds, tcl_env) <- discardWarnings $ setOptM Opt_GlasgowExts $
+ tcTopBinds deriv_binds ;
+
-- Second pass over class and instance declarations,
traceTc (text "Tc6") ;
- (inst_binds, tcl_env) <- tcInstDecls2 tycl_decls inst_infos ;
+ (inst_binds, tcl_env) <- setLclTypeEnv tcl_env $ tcInstDecls2 tycl_decls inst_infos ;
showLIE (text "after instDecls2") ;
-- Foreign exports
traceTc (text "Tc7a") ;
tcg_env <- getGblEnv ;
let { all_binds = tc_val_binds `unionBags`
+ tc_deriv_binds `unionBags`
inst_binds `unionBags`
foe_binds ;
checkMain :: TcM TcGblEnv
-- If we are in module Main, check that 'main' is defined.
checkMain
- = do { ghc_mode <- getGhcMode ;
- tcg_env <- getGblEnv ;
+ = do { tcg_env <- getGblEnv ;
dflags <- getDOpts ;
let { main_mod = mainModIs dflags ;
main_fn = case mainFunIs dflags of {
Just fn -> mkRdrUnqual (mkVarOccFS (mkFastString fn)) ;
Nothing -> main_RDR_Unqual } } ;
- check_main ghc_mode tcg_env main_mod main_fn
+ check_main dflags tcg_env main_mod main_fn
}
-check_main ghc_mode tcg_env main_mod main_fn
+check_main dflags tcg_env main_mod main_fn
| mod /= main_mod
= traceTc (text "checkMain not" <+> ppr main_mod <+> ppr mod) >>
return tcg_env
where
mod = tcg_mod tcg_env
- complain_no_main | ghc_mode == Interactive = return ()
- | otherwise = failWithTc noMainMsg
+ complain_no_main | ghcLink dflags == LinkInMemory = return ()
+ | otherwise = failWithTc noMainMsg
-- In interactive mode, don't worry about the absence of 'main'
-- In other modes, fail altogether, so that we don't go on
-- and complain a second time when processing the export list.
in
updGblEnv (\env -> env {
tcg_rdr_env = ic_rn_gbl_env icxt,
- tcg_type_env = ic_type_env icxt,
tcg_inst_env = extendInstEnvList (tcg_inst_env env) dfuns }) $
- updLclEnv (\env -> env { tcl_rdr = ic_rn_local_env icxt }) $
- do { traceTc (text "setIC" <+> ppr (ic_type_env icxt))
+ tcExtendIdEnv (ic_tmp_ids icxt) $
+ -- tcExtendIdEnv does lots:
+ -- - it extends the local type env (tcl_env) with the given Ids,
+ -- - it extends the local rdr env (tcl_rdr) with the Names from
+ -- the given Ids
+ -- - it adds the free tyvars of the Ids to the tcl_tyvars
+ -- set.
+ --
+ -- later ids in ic_tmp_ids must shadow earlier ones with the same
+ -- OccName, and tcExtendIdEnv implements this behaviour.
+
+ do { traceTc (text "setIC" <+> ppr (ic_tmp_ids icxt))
; thing_inside }
\end{code}
tcRnStmt :: HscEnv
-> InteractiveContext
-> LStmt RdrName
- -> IO (Maybe (InteractiveContext, [Name], LHsExpr Id))
- -- The returned [Name] is the same as the input except for
- -- ExprStmt, in which case the returned [Name] is [itName]
+ -> IO (Maybe ([Id], LHsExpr Id))
+ -- The returned [Id] is the list of new Ids bound by
+ -- this statement. It can be used to extend the
+ -- InteractiveContext via extendInteractiveContext.
--
-- The returned TypecheckedHsExpr is of type IO [ () ],
-- a list of the bound values, coerced to ().
-- up to have tidy types
global_ids = map globaliseAndTidy zonked_ids ;
- -- Update the interactive context
- rn_env = ic_rn_local_env ictxt ;
- type_env = ic_type_env ictxt ;
-
- bound_names = map idName global_ids ;
- new_rn_env = extendLocalRdrEnv rn_env bound_names ;
-
{- ---------------------------------------------
At one stage I removed any shadowed bindings from the type_env;
they are inaccessible but might, I suppose, cause a space leak if we leave them there.
Hence this code is commented out
- shadowed = [ n | name <- bound_names,
- let rdr_name = mkRdrUnqual (nameOccName name),
- Just n <- [lookupLocalRdrEnv rn_env rdr_name] ] ;
- filtered_type_env = delListFromNameEnv type_env shadowed ;
-------------------------------------------------- -}
-
- new_type_env = extendTypeEnvWithIds type_env global_ids ;
- new_ic = ictxt { ic_rn_local_env = new_rn_env,
- ic_type_env = new_type_env }
} ;
dumpOptTcRn Opt_D_dump_tc
(vcat [text "Bound Ids" <+> pprWithCommas ppr global_ids,
text "Typechecked expr" <+> ppr zonked_expr]) ;
- returnM (new_ic, bound_names, zonked_expr)
+ returnM (global_ids, zonked_expr)
}
where
bad_unboxed id = addErr (sep [ptext SLIT("GHCi can't bind a variable of unlifted type:"),
ic = hsc_IC hsc_env
checkMods = ic_toplev_scope ic ++ ic_exports ic
in
- initTc hsc_env HsSrcFile iNTERACTIVE (tcGetModuleExports mod checkMods)
+ initTc hsc_env HsSrcFile False iNTERACTIVE (tcGetModuleExports mod checkMods)
-- Get the export avail info and also load all orphan and family-instance
-- modules. Finally, check that the family instances of all modules in the
return good_names
}
-tcRnRecoverDataCon :: HscEnv -> a -> IO (Maybe DataCon)
-tcRnRecoverDataCon hsc_env a
+tcRnRecoverDataCon :: HscEnv -> Ptr () -> IO (Maybe DataCon)
+tcRnRecoverDataCon hsc_env ptr
= initTcPrintErrors hsc_env iNTERACTIVE $
- setInteractiveContext hsc_env (hsc_IC hsc_env) $
- do name <- recoverDataCon a
+ setInteractiveContext hsc_env (hsc_IC hsc_env) $ do
+ name <- dataConInfoPtrToName ptr
tcLookupDataCon name
tcRnLookupName :: HscEnv -> Name -> IO (Maybe TyThing)
tcRnLookupName hsc_env name
= initTcPrintErrors hsc_env iNTERACTIVE $
setInteractiveContext hsc_env (hsc_IC hsc_env) $
- tcLookupGlobal name
+ tcRnLookupName' name
+
+-- To look up a name we have to look in the local environment (tcl_lcl)
+-- as well as the global environment, which is what tcLookup does.
+-- But we also want a TyThing, so we have to convert:
+tcRnLookupName' :: Name -> TcRn TyThing
+tcRnLookupName' name = do
+ tcthing <- tcLookup name
+ case tcthing of
+ AGlobal thing -> return thing
+ ATcId{tct_id=id} -> return (AnId id)
+ _ -> panic "tcRnLookupName'"
tcRnGetInfo :: HscEnv
-> Name
-- in the home package all relevant modules are loaded.)
loadUnqualIfaces ictxt
- thing <- tcLookupGlobal name
+ thing <- tcRnLookupName' name
fixity <- lookupFixityRn name
ispecs <- lookupInsts (icPrintUnqual ictxt) thing
return (thing, fixity, ispecs)
projects / ghc-hetmet.git / blobdiff