\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, IOMode(..) )
import HsSyn
import RdrHsSyn ( RdrName(..) )
-import RnHsSyn ( SYN_IE(RenamedHsModule) )
-import BasicTypes ( Fixity(..), FixityDirection(..), NewOrData(..) )
+import RnHsSyn ( RenamedHsModule )
+import BasicTypes ( Fixity(..), FixityDirection(..), NewOrData(..), IfaceFlavour(..),
+ pprModule
+ )
import RnMonad
-import RnEnv ( availName )
+import RnEnv ( availName, ifaceFlavour )
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,
+ IdSet, idSetToList, unionIdSets, unitIdSet, minusIdSet,
isEmptyIdSet, elementOfIdSet, emptyIdSet, mkIdSet,
- GenId{-instance NamedThing/Outputable-}, SYN_IE(Id)
+ pprId,
+ Id
)
-import IdInfo ( StrictnessInfo, ArityInfo,
+import IdInfo ( IdInfo, StrictnessInfo, ArityInfo,
arityInfo, ppArityInfo, strictnessInfo, ppStrictnessInfo,
- getWorkerId_maybe, bottomIsGuaranteed, IdInfo
+ bottomIsGuaranteed, workerExists,
)
-import CoreSyn ( SYN_IE(CoreExpr), SYN_IE(CoreBinding), GenCoreExpr, GenCoreBinding(..) )
+import CoreSyn ( CoreExpr, CoreBinding, GenCoreExpr, GenCoreBinding(..) )
import CoreUnfold ( calcUnfoldingGuidance, UnfoldingGuidance(..), Unfolding )
import FreeVars ( addExprFVs )
-import Name ( isLocallyDefined, isWiredInName, modAndOcc, getName, nameModule, pprOccName,
+import Name ( isLocallyDefined, isWiredInName, modAndOcc, nameModule, pprOccName,
OccName, occNameString, nameOccName, nameString, isExported,
Name {-instance NamedThing-}, Provenance, NamedThing(..)
)
-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 TyCon ( TyCon, getSynTyConDefn, isSynTyCon, isNewTyCon, isAlgTyCon,
+ tyConTheta, tyConTyVars, tyConDataCons
+ )
+import Class ( Class, classBigSig )
+import FieldLabel ( fieldLabelName, fieldLabelType )
+import Type ( mkSigmaTy, splitSigmaTy, mkDictTy,
+ mkTyVarTys, 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 Util ( sortLt, zipWithEqual, zipWith3Equal, mapAccumL )
+import Outputable
\end{code}
We have a function @startIface@ to open the output file and put
ifaceTyCons hdl tycons >>
ifaceBinds hdl needed_ids final_ids binds >>
return ()
- where
+ where
null_decls = null binds &&
null tycons &&
null classes &&
= hPutStr if_hdl "_usages_\n" >>
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, hif, mv, whats_imported)
+ = hsep [pprModule m, pp_hif hif, int mv, ptext SLIT("::"),
+ 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))) >>
+ printForIface if_hdl (hsep (map ptext (sortLt (<) imods))) >>
hPutStr if_hdl "\n"
ifaceExports if_hdl [] = return ()
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 (mod_name, avails@(avail1:_))
+ = hsep [pp_hif (ifaceFlavour (availName avail1)),
+ pprModule mod_name,
+ hsep (map upp_avail (sortLt lt_avail avails))
+ ] <> semi
+
+-- The "!" indicates that the exported things came from a hi-boot interface
+pp_hif HiFile = empty
+pp_hif HiBootFile = char '!'
ifaceFixities if_hdl [] = return ()
ifaceFixities if_hdl fixities
-- 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
+ forall_ty = mkSigmaTy tvs theta (mkDictTy clas tys)
+ renumbered_ty = nmbrGlobalType 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]
idinfo = get_idinfo id
inline_pragma = getInlinePragma id
- ty_pretty = pprType PprInterface (initNmbr (nmbrType (idType id)))
- sig_pretty = hcat [ppr PprInterface (getOccName id), ptext SLIT(" _:_ "), ty_pretty]
+ ty_pretty = pprType (nmbrGlobalType (idType id))
+ sig_pretty = hcat [ppr (getOccName id), ptext SLIT(" _:_ "), ty_pretty]
prag_pretty
| opt_OmitInterfacePragmas = empty
| otherwise = hsep [arity_pretty, strict_pretty, unfold_pretty, pp_double_semi]
------------ Arity --------------
- arity_pretty = ppArityInfo PprInterface (arityInfo idinfo)
+ arity_pretty = ppArityInfo (arityInfo idinfo)
------------ Strictness --------------
strict_info = strictnessInfo idinfo
- maybe_worker = getWorkerId_maybe strict_info
- strict_pretty = ppStrictnessInfo PprInterface strict_info
+ has_worker = workerExists strict_info
+ strict_pretty = ppStrictnessInfo strict_info <+> wrkr_pretty
+
+ wrkr_pretty | not has_worker = empty
+ | null con_list = pprId work_id
+ | otherwise = pprId work_id <+>
+ braces (hsep (map (pprId) con_list))
+
+ (work_id, wrapper_cons) = getWorkerIdAndCons id rhs
+ con_list = idSetToList wrapper_cons
------------ Unfolding --------------
unfold_pretty | show_unfold = hsep [ptext SLIT("_U_"), pprIfaceUnfolding rhs]
show_unfold = not implicit_unfolding && -- Not unnecessary
not dodgy_unfolding -- Not dangerous
- implicit_unfolding = maybeToBool maybe_worker ||
+ implicit_unfolding = has_worker ||
bottomIsGuaranteed strict_info
dodgy_unfolding = case guidance of -- True <=> too big to show, or the Inline pragma
| otherwise = worker_ids `unionIdSets`
unfold_ids
- worker_ids = case maybe_worker of
- Just wkr -> unitIdSet wkr
- Nothing -> emptyIdSet
+ worker_ids | has_worker = unitIdSet work_id
+ | otherwise = emptyIdSet
unfold_ids | show_unfold = free_vars
| otherwise = emptyIdSet
-> 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) $
+ Nothing -> pprTrace "ifaceBinds not found:" (ppr id) $
getIdInfo 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
pprTrace "ifaceBinds: free vars:"
- (sep (map (ppr PprDebug) (idSetToList needed))) $
+ (sep (map ppr (idSetToList needed))) $
[]
else
[]
needed'' = needed' `minusIdSet` mkIdSet (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
+ (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 NewType = SLIT("newtype")
- keyword DataType = SLIT("data")
+ keyword | isNewTyCon tycon = SLIT("newtype")
+ | otherwise = SLIT("data")
ppr_con data_con
| null field_labels
- = hsep [ ppr sty name,
+ = hsep [ ppr name,
hsep (map ppr_arg_ty (strict_marks `zip` arg_tys))
]
| otherwise
- = hsep [ ppr sty name,
+ = hsep [ ppr name,
braces $ hsep $ punctuate comma (map ppr_field (strict_marks `zip` field_labels))
]
where
strict_marks = dataConStrictMarks data_con
name = getName data_con
- ppr_arg_ty (strict_mark, ty) = ppr_strict_mark strict_mark <> pprParendType sty ty
+ ppr_arg_ty (strict_mark, ty) = ppr_strict_mark strict_mark <> pprParendType ty
ppr_strict_mark NotMarkedStrict = empty
ppr_strict_mark MarkedStrict = ptext SLIT("! ")
-- distinction, so "!a" is a valid identifier so far as it is concerned
ppr_field (strict_mark, field_label)
- = hsep [ ppr sty (fieldLabelName field_label),
+ = hsep [ ppr (fieldLabelName field_label),
ptext SLIT("::"),
- ppr_strict_mark strict_mark <> pprParendType sty (fieldLabelType field_label)
+ 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_classop sel_id maybe_defm
+ = ASSERT( sel_tyvars == clas_tyvars)
+ hsep [ppr (getOccName sel_id),
+ if maybeToBool maybe_defm then equals else empty,
+ ptext SLIT("::"),
+ ppr op_ty
+ ]
+ where
+ (sel_tyvars, _, op_ty) = splitSigmaTy (idType sel_id)
-ppr_decl_context :: PprStyle -> [(Class,Type)] -> Doc
-ppr_decl_context sty [] = empty
-ppr_decl_context sty theta
+ppr_decl_context :: ThetaType -> SDoc
+ppr_decl_context [] = empty
+ppr_decl_context theta
= braces (hsep (punctuate comma (map (ppr_dict) theta)))
<>
ptext SLIT(" =>")
where
- ppr_dict (clas,ty) = hsep [ppr sty clas, ppr sty ty]
+ ppr_dict (clas,tys) = ppr clas <+> hsep (map pprParendType tys)
\end{code}
%************************************************************************
upp_avail (AvailTC name ns) = hcat [upp_occname (getOccName name), bang, upp_export ns']
where
bang | name `elem` ns = empty
- | otherwise = char '!'
+ | otherwise = char '|'
ns' = filter (/= name) ns
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)
+upp_export names = parens (hsep (map (upp_occname . getOccName) names))
-ppr_name :: NamedThing a => a -> Doc -- Its full name
-ppr_name n = ptext (nameString (getName n))
+upp_fixity (occ, fixity) = hcat [ppr fixity, space, upp_occname occ, semi]
-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
-
-ppr_decl decl = ppr PprInterface decl <> semi
+ppr_unqual_name :: NamedThing a => a -> SDoc -- Just its occurrence name
+ppr_unqual_name name = upp_occname (getOccName name)
-renumber_ty ty = initNmbr (nmbrType ty)
+upp_occname :: OccName -> SDoc
+upp_occname occ = ptext (occNameString occ)
\end{code}
lt_lexical a1 a2 = getName a1 `lt_name` getName a2
lt_imp_vers :: ImportVersion a -> ImportVersion a -> Bool
-lt_imp_vers (m1,_,_) (m2,_,_) = m1 < m2
+lt_imp_vers (m1,_,_,_) (m2,_,_,_) = m1 < m2
sort_versions vs = sortLt lt_vers vs
\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 ()
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