%
-% (c) The GRASP/AQUA Project, Glasgow University, 1993-1996
+% (c) The GRASP/AQUA Project, Glasgow University, 1993-1998
%
\section[MkIface]{Print an interface for a module}
\begin{code}
-#include "HsVersions.h"
-
module MkIface (
startIface, endIface,
ifaceMain,
ifaceDecls
) where
-IMP_Ubiq(){-uitous-}
-IMPORT_1_3(IO(Handle,hPutStr,openFile,hClose,IOMode(..)))
+#include "HsVersions.h"
+
+import IO ( Handle, hPutStr, openFile,
+ hClose, hPutStrLn, IOMode(..) )
import HsSyn
-import RdrHsSyn ( RdrName(..) )
-import RnHsSyn ( SYN_IE(RenamedHsModule) )
-import BasicTypes ( Fixity(..), FixityDirection(..), NewOrData(..) )
+import BasicTypes ( Fixity(..), FixityDirection(..), NewOrData(..),
+ StrictnessMark(..)
+ )
import RnMonad
import RnEnv ( availName )
import TcInstUtil ( InstInfo(..) )
+import WorkWrap ( getWorkerIdAndCons )
import CmdLineOpts
-import Id ( idType, dataConRawArgTys, dataConFieldLabels,
- getIdInfo, getInlinePragma, omitIfaceSigForId,
- dataConStrictMarks, StrictnessMark(..),
- SYN_IE(IdSet), idSetToList, unionIdSets, unitIdSet, minusIdSet,
- isEmptyIdSet, elementOfIdSet, emptyIdSet, mkIdSet,
- GenId{-instance NamedThing/Outputable-}, SYN_IE(Id)
-
+import Id ( Id, idType, idInfo, omitIfaceSigForId,
+ getIdSpecialisation
+ )
+import Var ( isId )
+import VarSet
+import DataCon ( dataConSig, dataConFieldLabels, dataConStrictMarks )
+import IdInfo ( IdInfo, StrictnessInfo, ArityInfo, InlinePragInfo(..), inlinePragInfo,
+ arityInfo, ppArityInfo,
+ strictnessInfo, ppStrictnessInfo,
+ cafInfo, ppCafInfo,
+ cprInfo, ppCprInfo,
+ workerExists, workerInfo, isBottomingStrictness
)
-import IdInfo ( StrictnessInfo, ArityInfo,
- arityInfo, ppArityInfo, strictnessInfo, ppStrictnessInfo,
- getWorkerId_maybe, bottomIsGuaranteed, IdInfo
+import CoreSyn ( CoreExpr, CoreBind, Bind(..) )
+import CoreUtils ( exprSomeFreeVars )
+import CoreUnfold ( calcUnfoldingGuidance, UnfoldingGuidance(..),
+ Unfolding, okToUnfoldInHiFile )
+import Module ( moduleString, pprModule, pprModuleBoot )
+import Name ( isLocallyDefined, isWiredInName, nameRdrName, nameModule,
+ isExported,
+ Name, NamedThing(..)
)
-import CoreSyn ( SYN_IE(CoreExpr), SYN_IE(CoreBinding), GenCoreExpr, GenCoreBinding(..) )
-import CoreUnfold ( calcUnfoldingGuidance, UnfoldingGuidance(..), Unfolding )
-import FreeVars ( addExprFVs )
-import Name ( isLocallyDefined, isWiredInName, modAndOcc, getName, nameModule, pprOccName,
- OccName, occNameString, nameOccName, nameString, isExported,
- Name {-instance NamedThing-}, Provenance, NamedThing(..)
+import OccName ( OccName, pprOccName )
+import TyCon ( TyCon, getSynTyConDefn, isSynTyCon, isNewTyCon, isAlgTyCon,
+ tyConTheta, tyConTyVars, tyConDataCons
)
-import TyCon ( TyCon(..) {-instance NamedThing-} )
-import Class ( GenClass(..){-instance NamedThing-}, SYN_IE(Class), GenClassOp,
- classOpLocalType, classSig )
-import FieldLabel ( FieldLabel{-instance NamedThing-},
- fieldLabelName, fieldLabelType )
-import Type ( mkSigmaTy, mkDictTy, getAppTyCon,
- mkTyVarTy, SYN_IE(Type)
+import Class ( Class, classBigSig )
+import SpecEnv ( specEnvToList )
+import FieldLabel ( fieldLabelName, fieldLabelType )
+import Type ( mkSigmaTy, splitSigmaTy, mkDictTy, tidyTopType, deNoteType,
+ Type, ThetaType
)
-import TyVar ( GenTyVar {- instance Eq -} )
-import Unique ( Unique {- instance Eq -} )
-import PprEnv -- not sure how much...
-import Outputable ( PprStyle(..), Outputable(..) )
import PprType
import PprCore ( pprIfaceUnfolding )
-import Pretty
-import Outputable ( printDoc )
-
import Bag ( bagToList, isEmptyBag )
import Maybes ( catMaybes, maybeToBool )
-import FiniteMap ( emptyFM, addToFM, addToFM_C, lookupFM, fmToList, eltsFM, FiniteMap )
-import UniqFM ( UniqFM, lookupUFM, listToUFM )
-import Util ( sortLt, zipWithEqual, zipWith3Equal, mapAccumL,
- assertPanic, panic{-ToDo:rm-}, pprTrace,
- pprPanic
- )
+import FiniteMap ( emptyFM, addToFM, addToFM_C, fmToList, FiniteMap )
+import UniqFM ( lookupUFM, listToUFM )
+import UniqSet ( uniqSetToList )
+import Util ( sortLt, mapAccumL )
+import Outputable
\end{code}
We have a function @startIface@ to open the output file and put
-> [TyCon] -> [Class]
-> Bag InstInfo
-> [Id] -- Ids used at code-gen time; they have better pragma info!
- -> [CoreBinding] -- In dependency order, later depend on earlier
+ -> [CoreBind] -- In dependency order, later depend on earlier
-> IO ()
endIface :: Maybe Handle -> IO ()
startIface mod
= case opt_ProduceHi of
Nothing -> return Nothing -- not producing any .hi file
- Just fn ->
- openFile fn WriteMode >>= \ if_hdl ->
- hPutStr if_hdl ("{-# GHC_PRAGMA INTERFACE VERSION 20 #-}\n_interface_ "++ _UNPK_ mod ++ "\n") >>
+ Just fn -> do
+ if_hdl <- openFile fn WriteMode
+ hPutStr if_hdl ("__interface " ++ moduleString mod ++ ' ':show (opt_HiVersion :: Int))
+ hPutStrLn if_hdl " where"
return (Just if_hdl)
endIface Nothing = return ()
ifaceMain Nothing iface_stuff = return ()
ifaceMain (Just if_hdl)
(import_usages, ExportEnv avails fixities, instance_modules)
- =
- ifaceInstanceModules if_hdl instance_modules >>
- ifaceUsages if_hdl import_usages >>
- ifaceExports if_hdl avails >>
- ifaceFixities if_hdl fixities >>
+ = do
+ ifaceImports if_hdl import_usages
+ ifaceInstanceModules if_hdl instance_modules
+ ifaceExports if_hdl avails
+ ifaceFixities if_hdl fixities
return ()
ifaceDecls Nothing tycons classes inst_info final_ids simplified = return ()
| null_decls = return ()
-- You could have a module with just (re-)exports/instances in it
| otherwise
- = ifaceInstances hdl inst_infos >>= \ needed_ids ->
- hPutStr hdl "_declarations_\n" >>
- ifaceClasses hdl classes >>
+ = ifaceClasses hdl classes >>
+ ifaceInstances hdl inst_infos >>= \ needed_ids ->
ifaceTyCons hdl tycons >>
ifaceBinds hdl needed_ids final_ids binds >>
return ()
- where
+ where
null_decls = null binds &&
null tycons &&
null classes &&
\end{code}
\begin{code}
-ifaceUsages if_hdl import_usages
- = hPutStr if_hdl "_usages_\n" >>
- hPutCol if_hdl upp_uses (sortLt lt_imp_vers import_usages)
+ifaceImports if_hdl import_usages
+ = hPutCol if_hdl upp_uses (sortLt lt_imp_vers import_usages)
where
- upp_uses (m, mv, versions)
- = hcat [upp_module m, space, int mv, ptext SLIT(" :: "),
- upp_import_versions (sort_versions versions), semi]
+ upp_uses (m, mv, whats_imported)
+ = ptext SLIT("import ") <>
+ hsep [pprModule m, pprModuleBoot m, int mv, dcolon,
+ upp_import_versions whats_imported
+ ] <> semi
- -- For imported versions we do print the version number
- upp_import_versions nvs
- = hsep [ hsep [ppr_unqual_name n, int v] | (n,v) <- nvs ]
+ -- Importing the whole module is indicated by an empty list
+ upp_import_versions Everything = empty
+ -- For imported versions we do print the version number
+ upp_import_versions (Specifically nvs)
+ = hsep [ hsep [ppr_unqual_name n, int v] | (n,v) <- sort_versions nvs ]
ifaceInstanceModules if_hdl [] = return ()
ifaceInstanceModules if_hdl imods
- = hPutStr if_hdl "_instance_modules_\n" >>
- printDoc OneLineMode if_hdl (hsep (map ptext (sortLt (<) imods))) >>
+ = let sorted = sortLt (<) imods
+ lines = map (\m -> ptext SLIT("__instimport ") <> pprModule m <>
+ ptext SLIT(" ;")) sorted
+ in
+ printForIface if_hdl (vcat lines) >>
hPutStr if_hdl "\n"
ifaceExports if_hdl [] = return ()
ifaceExports if_hdl avails
- = hPutStr if_hdl "_exports_\n" >>
- hPutCol if_hdl do_one_module (fmToList export_fm)
+ = hPutCol if_hdl do_one_module (fmToList export_fm)
where
-- Sort them into groups by module
export_fm :: FiniteMap Module [AvailInfo]
export_fm = foldr insert emptyFM avails
- insert NotAvailable efm = efm
insert avail efm = addToFM_C (++) efm mod [avail]
where
mod = nameModule (availName avail)
-- Print one module's worth of stuff
- do_one_module (mod_name, avails)
- = hcat [upp_module mod_name, space,
- hsep (map upp_avail (sortLt lt_avail avails)),
- semi]
+ do_one_module :: (Module, [AvailInfo]) -> SDoc
+ do_one_module (mod_name, avails@(avail1:_))
+ = ptext SLIT("__export ") <>
+ hsep [pprModuleBoot (nameModule (availName avail1)),
+ pprModule mod_name,
+ hsep (map upp_avail (sortLt lt_avail avails))
+ ] <> semi
ifaceFixities if_hdl [] = return ()
ifaceFixities if_hdl fixities
- = hPutStr if_hdl "_fixities_\n" >>
- hPutCol if_hdl upp_fixity fixities
+ = hPutCol if_hdl upp_fixity fixities
\end{code}
%************************************************************************
\begin{code}
ifaceInstances :: Handle -> Bag InstInfo -> IO IdSet -- The IdSet is the needed dfuns
ifaceInstances if_hdl inst_infos
- | null togo_insts = return emptyIdSet
- | otherwise = hPutStr if_hdl "_instances_\n" >>
- hPutCol if_hdl pp_inst (sortLt lt_inst togo_insts) >>
+ | null togo_insts = return emptyVarSet
+ | otherwise = hPutCol if_hdl pp_inst (sortLt lt_inst togo_insts) >>
return needed_ids
where
togo_insts = filter is_togo_inst (bagToList inst_infos)
- needed_ids = mkIdSet [dfun_id | InstInfo _ _ _ _ _ dfun_id _ _ _ <- togo_insts]
- is_togo_inst (InstInfo _ _ _ _ _ dfun_id _ _ _) = isLocallyDefined dfun_id
+ needed_ids = mkVarSet [dfun_id | InstInfo _ _ _ _ dfun_id _ _ _ <- togo_insts]
+ is_togo_inst (InstInfo _ _ _ _ dfun_id _ _ _) = isLocallyDefined dfun_id
-------
- lt_inst (InstInfo _ _ _ _ _ dfun_id1 _ _ _)
- (InstInfo _ _ _ _ _ dfun_id2 _ _ _)
+ lt_inst (InstInfo _ _ _ _ dfun_id1 _ _ _)
+ (InstInfo _ _ _ _ dfun_id2 _ _ _)
= getOccName dfun_id1 < getOccName dfun_id2
-- The dfuns are assigned names df1, df2, etc, in order of original textual
-- occurrence, and this makes as good a sort order as any
-------
- pp_inst (InstInfo clas tvs ty theta _ dfun_id _ _ _)
+ pp_inst (InstInfo clas tvs tys theta dfun_id _ _ _)
= let
- forall_ty = mkSigmaTy tvs theta (mkDictTy clas ty)
- renumbered_ty = renumber_ty forall_ty
+ -- The deNoteType is very important. It removes all type
+ -- synonyms from the instance type in interface files.
+ -- That in turn makes sure that when reading in instance decls
+ -- from interface files that the 'gating' mechanism works properly.
+ -- Otherwise you could have
+ -- type Tibble = T Int
+ -- instance Foo Tibble where ...
+ -- and this instance decl wouldn't get imported into a module
+ -- that mentioned T but not Tibble.
+ forall_ty = mkSigmaTy tvs theta (deNoteType (mkDictTy clas tys))
+ renumbered_ty = tidyTopType forall_ty
in
- hcat [ptext SLIT("instance "), ppr_ty renumbered_ty,
+ hcat [ptext SLIT("instance "), pprType renumbered_ty,
ptext SLIT(" = "), ppr_unqual_name dfun_id, semi]
\end{code}
-> Bool -- True <=> recursive, so don't print unfolding
-> Id
-> CoreExpr -- The Id's right hand side
- -> Maybe (Doc, IdSet) -- The emitted stuff, plus a possibly-augmented set of needed Ids
+ -> Maybe (SDoc, IdSet) -- The emitted stuff, plus a possibly-augmented set of needed Ids
ifaceId get_idinfo needed_ids is_rec id rhs
- | not (id `elementOfIdSet` needed_ids || -- Needed [no id in needed_ids has omitIfaceSigForId]
+ | not (id `elemVarSet` needed_ids || -- Needed [no id in needed_ids has omitIfaceSigForId]
(isExported id && not (omitIfaceSigForId id))) -- or exported and not to be omitted
= Nothing -- Well, that was easy!
ifaceId get_idinfo needed_ids is_rec id rhs
- = Just (hsep [sig_pretty, pp_double_semi, prag_pretty], new_needed_ids)
+ = Just (hsep [sig_pretty, prag_pretty, char ';'], new_needed_ids)
where
- pp_double_semi = ptext SLIT(";;")
idinfo = get_idinfo id
- inline_pragma = getInlinePragma id
+ inline_pragma = inlinePragInfo idinfo
- ty_pretty = pprType PprInterface (initNmbr (nmbrType (idType id)))
- sig_pretty = hcat [ppr PprInterface (getOccName id), ptext SLIT(" _:_ "), ty_pretty]
+ ty_pretty = pprType (idType id)
+ sig_pretty = hsep [ppr (getOccName id), dcolon, ty_pretty]
prag_pretty
| opt_OmitInterfacePragmas = empty
- | otherwise = hsep [arity_pretty, strict_pretty, unfold_pretty, pp_double_semi]
+ | otherwise = hsep [ptext SLIT("{-##"),
+ arity_pretty,
+ caf_pretty,
+ cpr_pretty,
+ strict_pretty,
+ unfold_pretty,
+ spec_pretty,
+ ptext SLIT("##-}")]
------------ Arity --------------
- arity_pretty = ppArityInfo PprInterface (arityInfo idinfo)
+ arity_pretty = ppArityInfo (arityInfo idinfo)
+
+ ------------ Caf Info --------------
+ caf_pretty = ppCafInfo (cafInfo idinfo)
- ------------ Strictness --------------
+ ------------ CPR Info --------------
+ cpr_pretty = ppCprInfo (cprInfo idinfo)
+
+ ------------ Strictness and Worker --------------
strict_info = strictnessInfo idinfo
- maybe_worker = getWorkerId_maybe strict_info
- strict_pretty = ppStrictnessInfo PprInterface strict_info
+ work_info = workerInfo idinfo
+ has_worker = workerExists work_info
+ bottoming_fn = isBottomingStrictness strict_info
+ strict_pretty = ppStrictnessInfo strict_info <+> wrkr_pretty
+
+ wrkr_pretty | not has_worker = empty
+ | null con_list = ppr work_id
+ | otherwise = ppr work_id <+>
+ braces (hsep (map ppr con_list))
+
+-- (Just work_id) = work_info
+-- Temporary fix. We can't use the worker id saved by the w/w
+-- pass because later optimisations may have changed it. So try
+-- to snaffle from the wrapper code again ...
+ (work_id, wrapper_cons) = getWorkerIdAndCons id rhs
+ con_list = uniqSetToList wrapper_cons
------------ Unfolding --------------
- unfold_pretty | show_unfold = hsep [ptext SLIT("_U_"), pprIfaceUnfolding rhs]
+ unfold_pretty | show_unfold = unfold_herald <+> pprIfaceUnfolding rhs
| otherwise = empty
- show_unfold = not implicit_unfolding && -- Not unnecessary
- not dodgy_unfolding -- Not dangerous
+ show_unfold = not has_worker && -- Not unnecessary
+ not bottoming_fn && -- Not necessary
+ unfolding_needed -- Not dangerous
+
+ unfolding_needed = case inline_pragma of
+ IMustBeINLINEd -> definitely_ok_to_unfold
+ IWantToBeINLINEd -> definitely_ok_to_unfold
+ NoInlinePragInfo -> rhs_is_small
+ other -> False
+
+
+ unfold_herald = case inline_pragma of
+ NoInlinePragInfo -> ptext SLIT("__u")
+ other -> ppr inline_pragma
+
+ rhs_is_small = case calcUnfoldingGuidance opt_InterfaceUnfoldThreshold rhs of
+ UnfoldNever -> False -- Too big
+ other -> definitely_ok_to_unfold -- Small enough
+
+ definitely_ok_to_unfold = okToUnfoldInHiFile rhs
+
+ ------------ Specialisations --------------
+ spec_list = specEnvToList (getIdSpecialisation id)
+ spec_pretty = hsep (map pp_spec spec_list)
+ pp_spec (tyvars, tys, rhs) = hsep [ptext SLIT("__P"),
+ if null tyvars then ptext SLIT("[ ]")
+ else brackets (interppSP tyvars),
+ -- The lexer interprets "[]" as a CONID. Sigh.
+ hsep (map pprParendType tys),
+ ptext SLIT("="),
+ pprIfaceUnfolding rhs
+ ]
+
+ ------------ Extra free Ids --------------
+ new_needed_ids = (needed_ids `minusVarSet` unitVarSet id) `unionVarSet`
+ extra_ids
- implicit_unfolding = maybeToBool maybe_worker ||
- bottomIsGuaranteed strict_info
+ extra_ids | opt_OmitInterfacePragmas = emptyVarSet
+ | otherwise = worker_ids `unionVarSet`
+ unfold_ids `unionVarSet`
+ spec_ids
- dodgy_unfolding = case guidance of -- True <=> too big to show, or the Inline pragma
- UnfoldNever -> True -- says it shouldn't be inlined
- other -> False
+ worker_ids | has_worker && interesting work_id = unitVarSet work_id
+ -- Conceivably, the worker might come from
+ -- another module
+ | otherwise = emptyVarSet
- guidance = calcUnfoldingGuidance inline_pragma
- opt_InterfaceUnfoldThreshold
- rhs
+ spec_ids = foldr add emptyVarSet spec_list
+ where
+ add (_, _, rhs) = unionVarSet (find_fvs rhs)
-
- ------------ Extra free Ids --------------
- new_needed_ids = (needed_ids `minusIdSet` unitIdSet id) `unionIdSets`
- extra_ids
+ unfold_ids | show_unfold = find_fvs rhs
+ | otherwise = emptyVarSet
- extra_ids | opt_OmitInterfacePragmas = emptyIdSet
- | otherwise = worker_ids `unionIdSets`
- unfold_ids
-
- worker_ids = case maybe_worker of
- Just wkr -> unitIdSet wkr
- Nothing -> emptyIdSet
-
- unfold_ids | show_unfold = free_vars
- | otherwise = emptyIdSet
- where
- (_,free_vars) = addExprFVs interesting emptyIdSet rhs
- interesting bound id = isLocallyDefined id &&
- not (id `elementOfIdSet` bound) &&
- not (omitIfaceSigForId id)
+ find_fvs expr = free_vars
+ where
+ free_vars = exprSomeFreeVars interesting expr
+
+ interesting id = isId id && isLocallyDefined id &&
+ not (omitIfaceSigForId id)
\end{code}
\begin{code}
ifaceBinds :: Handle
-> IdSet -- These Ids are needed already
-> [Id] -- Ids used at code-gen time; they have better pragma info!
- -> [CoreBinding] -- In dependency order, later depend on earlier
+ -> [CoreBind] -- In dependency order, later depend on earlier
-> IO ()
ifaceBinds hdl needed_ids final_ids binds
- = mapIO (printDoc OneLineMode hdl) pretties >>
+ = mapIO (printForIface hdl) pretties >>
hPutStr hdl "\n"
where
final_id_map = listToUFM [(id,id) | id <- final_ids]
get_idinfo id = case lookupUFM final_id_map id of
- Just id' -> getIdInfo id'
- Nothing -> pprTrace "ifaceBinds not found:" (ppr PprDebug id) $
- getIdInfo id
+ Just id' -> idInfo id'
+ Nothing -> pprTrace "ifaceBinds not found:" (ppr id) $
+ idInfo id
pretties = go needed_ids (reverse binds) -- Reverse so that later things will
-- provoke earlier ones to be emitted
- go needed [] = if not (isEmptyIdSet needed) then
+ go needed [] = if not (isEmptyVarSet needed) then
pprTrace "ifaceBinds: free vars:"
- (sep (map (ppr PprDebug) (idSetToList needed))) $
+ (sep (map ppr (varSetElems needed))) $
[]
else
[]
= pretties ++ go needed'' binds
where
(needed', pretties) = go_rec needed pairs
- needed'' = needed' `minusIdSet` mkIdSet (map fst pairs)
+ needed'' = needed' `minusVarSet` mkVarSet (map fst pairs)
-- Later ones may spuriously cause earlier ones to be "needed" again
- go_rec :: IdSet -> [(Id,CoreExpr)] -> (IdSet, [Doc])
+ go_rec :: IdSet -> [(Id,CoreExpr)] -> (IdSet, [SDoc])
go_rec needed pairs
| null pretties = (needed, [])
| otherwise = (final_needed, more_pretties ++ pretties)
for_iface_name name = isLocallyDefined name &&
not (isWiredInName name)
-upp_tycon tycon = ifaceTyCon PprInterface tycon
-upp_class clas = ifaceClass PprInterface clas
+upp_tycon tycon = ifaceTyCon tycon
+upp_class clas = ifaceClass clas
\end{code}
\begin{code}
-ifaceTyCon :: PprStyle -> TyCon -> Doc
-ifaceTyCon sty tycon
- = case tycon of
- DataTyCon uniq name kind tyvars theta data_cons deriv new_or_data
- -> hsep [ ptext (keyword new_or_data),
- ppr_decl_context sty theta,
- ppr sty name,
- hsep (map (pprTyVarBndr sty) tyvars),
- ptext SLIT("="),
- hsep (punctuate (ptext SLIT(" | ")) (map ppr_con data_cons)),
- semi
- ]
-
- SynTyCon uniq name kind arity tyvars ty
- -> hsep [ ptext SLIT("type"),
- ppr sty name,
- hsep (map (pprTyVarBndr sty) tyvars),
- ptext SLIT("="),
- ppr sty ty,
- semi
- ]
- other -> pprPanic "pprIfaceTyDecl" (ppr PprDebug tycon)
+ifaceTyCon :: TyCon -> SDoc
+ifaceTyCon tycon
+ | isSynTyCon tycon
+ = hsep [ ptext SLIT("type"),
+ ppr (getName tycon),
+ pprTyVarBndrs tyvars,
+ ptext SLIT("="),
+ ppr ty,
+ semi
+ ]
where
- keyword NewType = SLIT("newtype")
- keyword DataType = SLIT("data")
+ (tyvars, ty) = getSynTyConDefn tycon
+
+ifaceTyCon tycon
+ | isAlgTyCon tycon
+ = hsep [ ptext keyword,
+ ppr_decl_context (tyConTheta tycon),
+ ppr (getName tycon),
+ pprTyVarBndrs (tyConTyVars tycon),
+ ptext SLIT("="),
+ hsep (punctuate (ptext SLIT(" | ")) (map ppr_con (tyConDataCons tycon))),
+ semi
+ ]
+ where
+ keyword | isNewTyCon tycon = SLIT("newtype")
+ | otherwise = SLIT("data")
+
+ tyvars = tyConTyVars tycon
ppr_con data_con
| null field_labels
- = hsep [ ppr sty name,
+ = ASSERT( tycon == tycon1 && tyvars == tyvars1 )
+ hsep [ ppr_ex ex_tyvars ex_theta,
+ ppr name,
hsep (map ppr_arg_ty (strict_marks `zip` arg_tys))
]
| otherwise
- = hsep [ ppr sty name,
+ = hsep [ ppr_ex ex_tyvars ex_theta,
+ ppr name,
braces $ hsep $ punctuate comma (map ppr_field (strict_marks `zip` field_labels))
]
where
+ (tyvars1, theta1, ex_tyvars, ex_theta, arg_tys, tycon1) = dataConSig data_con
field_labels = dataConFieldLabels data_con
- arg_tys = dataConRawArgTys data_con
strict_marks = dataConStrictMarks data_con
name = getName data_con
- ppr_arg_ty (strict_mark, ty) = ppr_strict_mark strict_mark <> pprParendType sty ty
+ ppr_ex [] ex_theta = ASSERT( null ex_theta ) empty
+ ppr_ex ex_tvs ex_theta = ptext SLIT("__forall") <+> brackets (pprTyVarBndrs ex_tvs)
+ <+> pprIfaceTheta ex_theta <+> ptext SLIT("=>")
- ppr_strict_mark NotMarkedStrict = empty
- ppr_strict_mark MarkedStrict = ptext SLIT("! ")
- -- The extra space helps the lexical analyser that lexes
- -- interface files; it doesn't make the rigid operator/identifier
- -- distinction, so "!a" is a valid identifier so far as it is concerned
+ ppr_arg_ty (strict_mark, ty) = ppr_strict_mark strict_mark <> pprParendType ty
+
+ ppr_strict_mark NotMarkedStrict = empty
+ ppr_strict_mark (MarkedUnboxed _ _) = ptext SLIT("! ! ")
+ ppr_strict_mark MarkedStrict = ptext SLIT("! ")
ppr_field (strict_mark, field_label)
- = hsep [ ppr sty (fieldLabelName field_label),
- ptext SLIT("::"),
- ppr_strict_mark strict_mark <> pprParendType sty (fieldLabelType field_label)
+ = hsep [ ppr (fieldLabelName field_label),
+ dcolon,
+ ppr_strict_mark strict_mark <> pprParendType (fieldLabelType field_label)
]
-ifaceClass sty clas
+ifaceTyCon tycon
+ = pprPanic "pprIfaceTyDecl" (ppr tycon)
+
+ifaceClass clas
= hsep [ptext SLIT("class"),
- ppr_decl_context sty theta,
- ppr sty clas, -- Print the name
- pprTyVarBndr sty tyvar,
+ ppr_decl_context sc_theta,
+ ppr clas, -- Print the name
+ pprTyVarBndrs clas_tyvars,
pp_ops,
semi
]
where
- (tyvar, super_classes, ops) = classSig clas
- theta = super_classes `zip` repeat (mkTyVarTy tyvar)
+ (clas_tyvars, sc_theta, _, sel_ids, defms) = classBigSig clas
- pp_ops | null ops = empty
+ pp_ops | null sel_ids = empty
| otherwise = hsep [ptext SLIT("where"),
- braces (hsep (punctuate semi (map ppr_classop ops)))
+ braces (hsep (punctuate semi (zipWith ppr_classop sel_ids defms)))
]
- ppr_classop op = hsep [ppr sty (getOccName op),
- ptext SLIT("::"),
- ppr sty (classOpLocalType op)
- ]
-
-ppr_decl_context :: PprStyle -> [(Class,Type)] -> Doc
-ppr_decl_context sty [] = empty
-ppr_decl_context sty theta
- = braces (hsep (punctuate comma (map (ppr_dict) theta)))
- <>
- ptext SLIT(" =>")
- where
- ppr_dict (clas,ty) = hsep [ppr sty clas, ppr sty ty]
+ ppr_classop sel_id maybe_defm
+ = ASSERT( sel_tyvars == clas_tyvars)
+ hsep [ppr (getOccName sel_id),
+ if maybeToBool maybe_defm then equals else empty,
+ dcolon,
+ ppr op_ty
+ ]
+ where
+ (sel_tyvars, _, op_ty) = splitSigmaTy (idType sel_id)
+
+ppr_decl_context :: ThetaType -> SDoc
+ppr_decl_context [] = empty
+ppr_decl_context theta = pprIfaceTheta theta <+> ptext SLIT(" =>")
+
+pprIfaceTheta :: ThetaType -> SDoc -- Use braces rather than parens in interface files
+pprIfaceTheta [] = empty
+pprIfaceTheta theta = braces (hsep (punctuate comma [pprConstraint c tys | (c,tys) <- theta]))
\end{code}
%************************************************************************
AvailTC C [x, y] C!(x,y) -- Exporting x, y but not C
\begin{code}
-upp_avail NotAvailable = empty
-upp_avail (Avail name) = upp_occname (getOccName name)
+upp_avail :: AvailInfo -> SDoc
+upp_avail (Avail name) = pprOccName (getOccName name)
upp_avail (AvailTC name []) = empty
-upp_avail (AvailTC name ns) = hcat [upp_occname (getOccName name), bang, upp_export ns']
+upp_avail (AvailTC name ns) = hcat [pprOccName (getOccName name), bang, upp_export ns']
where
bang | name `elem` ns = empty
- | otherwise = char '!'
+ | otherwise = char '|'
ns' = filter (/= name) ns
+upp_export :: [Name] -> SDoc
upp_export [] = empty
-upp_export names = hcat [char '(',
- hsep (map (upp_occname . getOccName) names),
- char ')']
-
-upp_fixity (occ, (Fixity prec dir, prov)) = hcat [upp_dir dir, space,
- int prec, space,
- upp_occname occ, semi]
-upp_dir InfixR = ptext SLIT("infixr")
-upp_dir InfixL = ptext SLIT("infixl")
-upp_dir InfixN = ptext SLIT("infix")
-
-ppr_unqual_name :: NamedThing a => a -> Doc -- Just its occurrence name
-ppr_unqual_name name = upp_occname (getOccName name)
-
-ppr_name :: NamedThing a => a -> Doc -- Its full name
-ppr_name n = ptext (nameString (getName n))
-
-upp_occname :: OccName -> Doc
-upp_occname occ = ptext (occNameString occ)
-
-upp_module :: Module -> Doc
-upp_module mod = ptext mod
-
-uppSemid x = ppr PprInterface x <> semi -- micro util
-
-ppr_ty ty = pprType PprInterface ty
-ppr_tyvar tv = ppr PprInterface tv
-ppr_tyvar_bndr tv = pprTyVarBndr PprInterface tv
+upp_export names = braces (hsep (map (pprOccName . getOccName) names))
-ppr_decl decl = ppr PprInterface decl <> semi
+upp_fixity :: (Name, Fixity) -> SDoc
+upp_fixity (name, fixity) = hsep [ptext SLIT("0"), ppr fixity, ppr name, semi]
+ -- Dummy version number!
-renumber_ty ty = initNmbr (nmbrType ty)
+ppr_unqual_name :: NamedThing a => a -> SDoc -- Just its occurrence name
+ppr_unqual_name name = pprOccName (getOccName name)
\end{code}
a1 `lt_avail` a2 = availName a1 `lt_name` availName a2
lt_name :: Name -> Name -> Bool
-n1 `lt_name` n2 = modAndOcc n1 < modAndOcc n2
+n1 `lt_name` n2 = nameRdrName n1 < nameRdrName n2
lt_lexical :: NamedThing a => a -> a -> Bool
lt_lexical a1 a2 = getName a1 `lt_name` getName a2
\begin{code}
hPutCol :: Handle
- -> (a -> Doc)
+ -> (a -> SDoc)
-> [a]
-> IO ()
-hPutCol hdl fmt xs = mapIO (printDoc OneLineMode hdl . fmt) xs
+hPutCol hdl fmt xs = mapIO (printForIface hdl . fmt) xs
mapIO :: (a -> IO b) -> [a] -> IO ()
mapIO f [] = return ()
projects / ghc-hetmet.git / blobdiff