\begin{code}
module MkIface (
mkFinalIface,
- pprModDetails, pprIface, pprUsage
+ pprModDetails, pprIface, pprUsage,
+ ifaceTyThing,
) where
#include "HsVersions.h"
import HsSyn
import HsCore ( HsIdInfo(..), UfExpr(..), toUfExpr, toUfBndr )
import HsTypes ( toHsTyVars )
-import BasicTypes ( Fixity(..), NewOrData(..),
- Version, initialVersion, bumpVersion,
+import TysPrim ( alphaTyVars )
+import BasicTypes ( NewOrData(..), Activation(..),
+ Version, initialVersion, bumpVersion
)
+import NewDemand ( isTopSig )
import RnMonad
import RnHsSyn ( RenamedInstDecl, RenamedTyClDecl )
import HscTypes ( VersionInfo(..), ModIface(..), ModDetails(..),
- ModuleLocation(..), GhciMode(..),
+ ModuleLocation(..), GhciMode(..), FixityEnv, lookupFixity,
IfaceDecls, mkIfaceDecls, dcl_tycl, dcl_rules, dcl_insts,
- TyThing(..), DFunId, Avails,
+ TyThing(..), DFunId, Avails, TypeEnv,
WhatsImported(..), GenAvailInfo(..),
ImportVersion, AvailInfo, Deprecations(..),
- lookupVersion,
+ lookupVersion, typeEnvIds
)
import CmdLineOpts
)
import DataCon ( dataConId, dataConSig, dataConFieldLabels, dataConStrictMarks )
import IdInfo -- Lots
-import CoreSyn ( CoreRule(..) )
+import Var ( Var )
+import CoreSyn ( CoreRule(..), IdCoreRule )
import CoreFVs ( ruleLhsFreeNames )
import CoreUnfold ( neverUnfold, unfoldingTemplate )
import PprCore ( pprIdCoreRule )
import NameEnv
import NameSet
import OccName ( pprOccName )
-import TyCon ( TyCon, getSynTyConDefn, isSynTyCon, isNewTyCon, isAlgTyCon, tyConGenIds,
- tyConTheta, tyConTyVars, tyConDataCons, tyConFamilySize,
- isClassTyCon, isForeignTyCon
- )
+import TyCon
import Class ( classExtraBigSig, classTyCon, DefMeth(..) )
import FieldLabel ( fieldLabelType )
-import Type ( splitSigmaTy, tidyTopType, deNoteType, namesOfDFunHead )
+import TcType ( tcSplitSigmaTy, tidyTopType, deNoteType, namesOfDFunHead )
import SrcLoc ( noSrcLoc )
import Outputable
import Module ( ModuleName )
-import Util ( sortLt )
+import Util ( sortLt, dropList )
import ErrUtils ( dumpIfSet_dyn )
import Monad ( when )
+import Maybe ( catMaybes )
import IO ( IOMode(..), openFile, hClose )
\end{code}
-- a) completes the interface
-- b) writes it out to a file if necessary
-mkFinalIface ghci_mode dflags location
- maybe_old_iface new_iface new_details
+mkFinalIface ghci_mode dflags location maybe_old_iface
+ new_iface@ModIface{ mi_module=mod }
+ new_details@ModDetails{ md_insts=insts,
+ md_rules=rules,
+ md_types=types }
= do {
-- Add the new declarations, and the is-orphan flag
let iface_w_decls = new_iface { mi_decls = new_decls,
mi_orphan = orphan_mod }
-- Add version information
- ; let (final_iface, maybe_diffs) = addVersionInfo maybe_old_iface iface_w_decls
+ ; let (final_iface, maybe_diffs) = _scc_ "versioninfo" addVersionInfo maybe_old_iface iface_w_decls
-- Write the interface file, if necessary
; when (must_write_hi_file maybe_diffs)
-- Debug printing
; write_diffs dflags final_iface maybe_diffs
- ; return final_iface }
+ ; orphan_mod `seq`
+ return final_iface }
where
- must_write_hi_file Nothing = False
- must_write_hi_file (Just diffs) = ghci_mode /= Interactive
+ must_write_hi_file Nothing = False
+ must_write_hi_file (Just _diffs) = ghci_mode /= Interactive
-- We must write a new .hi file if there are some changes
-- and we're not in interactive mode
-- maybe_diffs = 'Nothing' means that even the usages havn't changed,
hi_file_path = ml_hi_file location
new_decls = mkIfaceDecls ty_cls_dcls rule_dcls inst_dcls
- inst_dcls = map ifaceInstance (md_insts new_details)
- ty_cls_dcls = foldNameEnv ifaceTyCls [] (md_types new_details)
- rule_dcls = map ifaceRule (md_rules new_details)
- orphan_mod = isOrphanModule (mi_module new_iface) new_details
+ inst_dcls = map ifaceInstance insts
+ ty_cls_dcls = foldNameEnv ifaceTyThing_acc [] types
+ rule_dcls = map ifaceRule rules
+ orphan_mod = isOrphanModule mod new_details
+write_diffs :: DynFlags -> ModIface -> Maybe SDoc -> IO ()
write_diffs dflags new_iface Nothing
= do when (dopt Opt_D_dump_hi_diffs dflags) (printDump (text "INTERFACE UNCHANGED"))
dumpIfSet_dyn dflags Opt_D_dump_hi "UNCHANGED FINAL INTERFACE" (pprIface new_iface)
\end{code}
\begin{code}
+isOrphanModule :: Module -> ModDetails -> Bool
isOrphanModule this_mod (ModDetails {md_insts = insts, md_rules = rules})
= any orphan_inst insts || any orphan_rule rules
where
+ -- A rule is an orphan if the LHS mentions nothing defined locally
orphan_inst dfun_id = no_locals (namesOfDFunHead (idType dfun_id))
+ -- A instance is an orphan if its head mentions nothing defined locally
orphan_rule rule = no_locals (ruleLhsFreeNames rule)
+
no_locals names = isEmptyNameSet (filterNameSet (nameIsLocalOrFrom this_mod) names)
\end{code}
+Implicit Ids and class tycons aren't included in interface files, so
+we miss them out of the accumulating parameter here.
+
+\begin{code}
+ifaceTyThing_acc :: TyThing -> [RenamedTyClDecl] -> [RenamedTyClDecl]
+ifaceTyThing_acc (AnId id) so_far | isImplicitId id = so_far
+ifaceTyThing_acc (ATyCon id) so_far | isClassTyCon id = so_far
+ifaceTyThing_acc other so_far = ifaceTyThing other : so_far
+\end{code}
+
+Convert *any* TyThing into a RenamedTyClDecl. Used both for
+generating interface files and for the ':info' command in GHCi.
+
\begin{code}
-ifaceTyCls :: TyThing -> [RenamedTyClDecl] -> [RenamedTyClDecl]
-ifaceTyCls (AClass clas) so_far
- = cls_decl : so_far
+ifaceTyThing :: TyThing -> RenamedTyClDecl
+ifaceTyThing (AClass clas) = cls_decl
where
cls_decl = ClassDecl { tcdCtxt = toHsContext sc_theta,
tcdName = getName clas,
= ASSERT(sel_tyvars == clas_tyvars)
ClassOpSig (getName sel_id) def_meth' (toHsType op_ty) noSrcLoc
where
- (sel_tyvars, _, op_ty) = splitSigmaTy (idType sel_id)
+ (sel_tyvars, _, op_ty) = tcSplitSigmaTy (idType sel_id)
def_meth' = case def_meth of
NoDefMeth -> NoDefMeth
GenDefMeth -> GenDefMeth
DefMeth id -> DefMeth (getName id)
-ifaceTyCls (ATyCon tycon) so_far
- | isClassTyCon tycon = so_far
- | otherwise = ty_decl : so_far
+ifaceTyThing (ATyCon tycon) = ty_decl
where
ty_decl | isSynTyCon tycon
= TySynonym { tcdName = getName tycon,
tcdCtxt = toHsContext (tyConTheta tycon),
tcdName = getName tycon,
tcdTyVars = toHsTyVars tyvars,
- tcdCons = map ifaceConDecl (tyConDataCons tycon),
- tcdNCons = tyConFamilySize tycon,
+ tcdCons = ifaceConDecls (tyConDataConDetails tycon),
tcdDerivs = Nothing,
tcdSysNames = map getName (tyConGenIds tycon),
tcdLoc = noSrcLoc }
| isForeignTyCon tycon
- = ForeignType { tcdName = getName tycon,
- tcdFoType = DNType, -- The only case at present
- tcdLoc = noSrcLoc }
+ = ForeignType { tcdName = getName tycon,
+ tcdExtName = Nothing,
+ tcdFoType = DNType, -- The only case at present
+ tcdLoc = noSrcLoc }
+
+ | isPrimTyCon tycon || isFunTyCon tycon
+ -- needed in GHCi for ':info Int#', for example
+ = TyData { tcdND = DataType,
+ tcdCtxt = [],
+ tcdName = getName tycon,
+ tcdTyVars = toHsTyVars (take (tyConArity tycon) alphaTyVars),
+ tcdCons = Unknown,
+ tcdDerivs = Nothing,
+ tcdSysNames = [],
+ tcdLoc = noSrcLoc }
- | otherwise = pprPanic "ifaceTyCls" (ppr tycon)
+ | otherwise = pprPanic "ifaceTyThing" (ppr tycon)
tyvars = tyConTyVars tycon
(_, syn_ty) = getSynTyConDefn tycon
new_or_data | isNewTyCon tycon = NewType
| otherwise = DataType
+ ifaceConDecls Unknown = Unknown
+ ifaceConDecls (HasCons n) = HasCons n
+ ifaceConDecls (DataCons cs) = DataCons (map ifaceConDecl cs)
+
ifaceConDecl data_con
= ConDecl (getName data_con) (getName (dataConId data_con))
(toHsTyVars ex_tyvars)
where
(tyvars1, _, ex_tyvars, ex_theta, arg_tys, tycon1) = dataConSig data_con
field_labels = dataConFieldLabels data_con
- strict_marks = drop (length ex_theta) (dataConStrictMarks data_con)
+ strict_marks = dropList ex_theta (dataConStrictMarks data_con)
-- The 'drop' is because dataConStrictMarks
-- includes the existential dictionaries
details | null field_labels
mk_field strict_mark field_label
= ([getName field_label], BangType strict_mark (toHsType (fieldLabelType field_label)))
-ifaceTyCls (AnId id) so_far
- | isImplicitId id = so_far
- | otherwise = iface_sig : so_far
+ifaceTyThing (AnId id) = iface_sig
where
iface_sig = IfaceSig { tcdName = getName id,
tcdType = toHsType id_type,
id_type = idType id
id_info = idInfo id
cg_info = idCgInfo id
- arity_info = cgArity cg_info
+ arity_info = arityInfo id_info
caf_info = cgCafInfo cg_info
- hs_idinfo | opt_OmitInterfacePragmas = []
- | otherwise = arity_hsinfo ++ caf_hsinfo ++ cpr_hsinfo ++
- strict_hsinfo ++ wrkr_hsinfo ++ unfold_hsinfo
+ hs_idinfo | opt_OmitInterfacePragmas
+ = []
+ | otherwise
+ = catMaybes [arity_hsinfo, caf_hsinfo,
+ strict_hsinfo, wrkr_hsinfo,
+ unfold_hsinfo]
------------ Arity --------------
- arity_hsinfo | arity_info == 0 = []
- | otherwise = [HsArity arity_info]
+ arity_hsinfo | arity_info == 0 = Nothing
+ | otherwise = Just (HsArity arity_info)
------------ Caf Info --------------
caf_hsinfo = case caf_info of
- NoCafRefs -> [HsNoCafRefs]
- otherwise -> []
-
- ------------ CPR Info --------------
- cpr_hsinfo = case cprInfo id_info of
- ReturnsCPR -> [HsCprInfo]
- NoCPRInfo -> []
+ NoCafRefs -> Just HsNoCafRefs
+ _other -> Nothing
------------ Strictness --------------
- strict_hsinfo = case strictnessInfo id_info of
- NoStrictnessInfo -> []
- info -> [HsStrictness info]
+ -- No point in explicitly exporting TopSig
+ strict_hsinfo = case newStrictnessInfo id_info of
+ Just sig | not (isTopSig sig) -> Just (HsStrictness sig)
+ _other -> Nothing
------------ Worker --------------
work_info = workerInfo id_info
has_worker = case work_info of { HasWorker _ _ -> True; other -> False }
wrkr_hsinfo = case work_info of
HasWorker work_id wrap_arity ->
- [HsWorker (getName work_id) wrap_arity]
- NoWorker -> []
+ Just (HsWorker (getName work_id) wrap_arity)
+ NoWorker -> Nothing
------------ Unfolding --------------
-- The unfolding is redundant if there is a worker
inline_prag = inlinePragInfo id_info
rhs = unfoldingTemplate unfold_info
unfold_hsinfo | neverUnfold unfold_info
- || has_worker = []
- | otherwise = [HsUnfold inline_prag (toUfExpr rhs)]
+ || has_worker = Nothing
+ | otherwise = Just (HsUnfold inline_prag (toUfExpr rhs))
\end{code}
\begin{code}
-- and this instance decl wouldn't get imported into a module
-- that mentioned T but not Tibble.
-ifaceRule (id, BuiltinRule _)
+ifaceRule :: IdCoreRule -> RuleDecl Name pat
+ifaceRule (id, BuiltinRule _ _)
= pprTrace "toHsRule: builtin" (ppr id) (bogusIfaceRule id)
-ifaceRule (id, Rule name bndrs args rhs)
- = IfaceRule name (map toUfBndr bndrs) (getName id)
+ifaceRule (id, Rule name act bndrs args rhs)
+ = IfaceRule name act (map toUfBndr bndrs) (getName id)
(map toUfExpr args) (toUfExpr rhs) noSrcLoc
+bogusIfaceRule :: (NamedThing a) => a -> RuleDecl Name pat
bogusIfaceRule id
- = IfaceRule SLIT("bogus") [] (getName id) [] (UfVar (getName id)) noSrcLoc
+ = IfaceRule SLIT("bogus") NeverActive [] (getName id) [] (UfVar (getName id)) noSrcLoc
\end{code}
pp_change False what = text what <+> ptext SLIT("changed")
diffDecls :: VersionInfo -- Old version
- -> NameEnv Fixity -> NameEnv Fixity -- Old and new fixities
+ -> FixityEnv -> FixityEnv -- Old and new fixities
-> [RenamedTyClDecl] -> [RenamedTyClDecl] -- Old and new decls
-> (Bool, -- True <=> no change
SDoc, -- Record of differences
-- When seeing if two decls are the same,
-- remember to check whether any relevant fixity has changed
eq_tc d1 d2 = d1 == d2 && all (same_fixity . fst) (tyClDeclNames d1)
- same_fixity n = lookupNameEnv old_fixities n == lookupNameEnv new_fixities n
+ same_fixity n = lookupFixity old_fixities n == lookupFixity new_fixities n
diff ok_so_far pp new_vers [] [] = (ok_so_far, pp, new_vers)
diff ok_so_far pp new_vers (od:ods) [] = diff False (pp $$ only_old od) new_vers ods []
, dump_insts dfun_ids
, dump_rules rules]
+dump_types :: [Var] -> TypeEnv -> SDoc
dump_types dfun_ids type_env
= text "TYPE SIGNATURES" $$ nest 4 (dump_sigs ids)
where
- ids = [id | AnId id <- nameEnvElts type_env, want_sig id]
+ ids = [id | id <- typeEnvIds type_env, want_sig id]
want_sig id | opt_PprStyle_Debug = True
| otherwise = isLocalId id &&
isGlobalName (idName id) &&
-- that the type checker has invented. User-defined things have
-- Global names.
+dump_insts :: [Var] -> SDoc
dump_insts [] = empty
dump_insts dfun_ids = text "INSTANCES" $$ nest 4 (dump_sigs dfun_ids)
+dump_sigs :: [Var] -> SDoc
dump_sigs ids
-- Print type signatures
-- Convert to HsType so that we get source-language style printing
lt_sig (n1,_) (n2,_) = n1 < n2
ppr_sig (n,t) = ppr n <+> dcolon <+> ppr t
+dump_rules :: [IdCoreRule] -> SDoc
dump_rules [] = empty
dump_rules rs = vcat [ptext SLIT("{-# RULES"),
nest 4 (vcat (map pprIdCoreRule rs)),
pprIface :: ModIface -> SDoc
pprIface iface
= vcat [ ptext SLIT("__interface")
- <+> doubleQuotes (ptext opt_InPackage)
+ <+> doubleQuotes (ptext (mi_package iface))
<+> ppr (mi_module iface) <+> ppr (vers_module version_info)
<+> pp_sub_vers
<+> (if mi_orphan iface then char '!' else empty)
where
pp_avail :: AvailInfo -> SDoc
pp_avail (Avail name) = pprOcc name
- pp_avail (AvailTC n []) = empty
+ pp_avail (AvailTC _ []) = empty
pp_avail (AvailTC n (n':ns)) | n==n' = pprOcc n <> pp_export ns
| otherwise = pprOcc n <> char '|' <> pp_export (n':ns)
\end{code}
\begin{code}
+pprIfaceDecls :: NameEnv Int -> IfaceDecls -> SDoc
pprIfaceDecls version_map decls
= vcat [ vcat [ppr i <+> semi | i <- dcl_insts decls]
, vcat (map ppr_decl (dcl_tycl decls))
\end{code}
\begin{code}
+pprFixities :: (Outputable a)
+ => NameEnv a
+ -> [TyClDecl Name pat]
+ -> SDoc
pprFixities fixity_map decls
= hsep [ ppr fix <+> ppr n
| d <- decls,
-- Disgusting to print these two together, but that's
-- the way the interface parser currently expects them.
+pprRulesAndDeprecs :: (Outputable a) => [a] -> Deprecations -> SDoc
pprRulesAndDeprecs [] NoDeprecs = empty
pprRulesAndDeprecs rules deprecs
= ptext SLIT("{-##") <+> (pp_rules rules $$ pp_deprecs deprecs) <+> ptext SLIT("##-}")
DeprecAll txt -> doubleQuotes (ptext txt)
DeprecSome env -> ppr_deprec_env env
+ppr_deprec_env :: NameEnv (Name, FAST_STRING) -> SDoc
ppr_deprec_env env = vcat (punctuate semi (map pp_deprec (nameEnvElts env)))
where
pp_deprec (name, txt) = pprOcc name <+> doubleQuotes (ptext txt)
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