import Var ( isId )
import VarSet
import DataCon ( StrictnessMark(..), dataConSig, dataConFieldLabels, dataConStrictMarks )
-import IdInfo ( IdInfo, StrictnessInfo, ArityInfo, InlinePragInfo(..), inlinePragInfo,
- arityInfo, ppArityInfo,
+import IdInfo ( IdInfo, StrictnessInfo(..), ArityInfo, InlinePragInfo(..), inlinePragInfo,
+ arityInfo, ppArityInfo, arityLowerBound,
strictnessInfo, ppStrictnessInfo, isBottomingStrictness,
cafInfo, ppCafInfo, specInfo,
- cprInfo, ppCprInfo,
+ cprInfo, ppCprInfo, pprInlinePragInfo,
+ occInfo, OccInfo(..),
workerExists, workerInfo, ppWorkerInfo
)
import CoreSyn ( CoreExpr, CoreBind, Bind(..), rulesRules, rulesRhsFreeVars )
import TyCon ( TyCon, getSynTyConDefn, isSynTyCon, isNewTyCon, isAlgTyCon,
tyConTheta, tyConTyVars, tyConDataCons
)
-import Class ( Class, classBigSig )
+import Class ( Class, classExtraBigSig )
import FieldLabel ( fieldLabelName, fieldLabelType )
-import Type ( mkSigmaTy, splitSigmaTy, mkDictTy, tidyTopType, deNoteType,
- Type, ThetaType
+import Type ( mkSigmaTy, splitSigmaTy, mkDictTy, tidyTopType,
+ deNoteType, classesToPreds,
+ Type, ThetaType, PredType(..), ClassContext
)
import PprType
import PprCore ( pprIfaceUnfolding, pprCoreRule )
+import FunDeps ( pprFundeps )
import Rules ( pprProtoCoreRule, ProtoCoreRule(..) )
import Bag ( bagToList, isEmptyBag )
@ifaceExportList@ produces the @__exports__@ section; it appends
to the handle provided by @startIface@.
+NOTE: ALWAYS remember that ghc-iface.lprl rewrites the interface file,
+so you have to keep it in synch with the code below. Otherwise you'll
+lose the happiest years of your life, believe me... -- SUP
+
\begin{code}
startIface :: Module -> InterfaceDetails
-> IO (Maybe Handle) -- Nothing <=> don't do an interface
-> [Id] -- Ids used at code-gen time; they have better pragma info!
-> [CoreBind] -- In dependency order, later depend on earlier
-> [ProtoCoreRule] -- Rules
+ -> [Deprecation Name]
-> IO ()
endIface :: Maybe Handle -> IO ()
\end{code}
\begin{code}
-startIface mod (has_orphans, import_usages, ExportEnv avails fixities)
+startIface mod (InterfaceDetails has_orphans import_usages (ExportEnv avails fixities _) _)
= case opt_ProduceHi of
Nothing -> return Nothing ; -- not producing any .hi file
\begin{code}
-ifaceDecls Nothing tycons classes inst_info final_ids simplified rules = return ()
+ifaceDecls Nothing tycons classes inst_info final_ids simplified rules _ = return ()
ifaceDecls (Just hdl)
tycons classes
inst_infos
- final_ids binds
+ final_ids
+ binds
orphan_rules -- Rules defined locally for an Id that is *not* defined locally
+ deprecations
| null_decls = return ()
-- You could have a module with just (re-)exports/instances in it
| otherwise
ifaceBinds hdl (inst_ids `unionVarSet` orphan_rule_ids)
final_ids binds >>= \ emitted_ids ->
ifaceRules hdl orphan_rules emitted_ids >>
- return ()
+ ifaceDeprecations hdl deprecations
where
orphan_rule_ids = unionVarSets [ ruleSomeFreeVars interestingId rule
| ProtoCoreRule _ _ rule <- orphan_rules]
- null_decls = null binds &&
- null tycons &&
- null classes &&
- isEmptyBag inst_infos &&
- null orphan_rules
+ null_decls = null binds &&
+ null tycons &&
+ null classes &&
+ isEmptyBag inst_infos &&
+ null orphan_rules &&
+ null deprecations
\end{code}
\begin{code}
+ifaceImports :: Handle -> VersionInfo Name -> IO ()
ifaceImports if_hdl import_usages
= hPutCol if_hdl upp_uses (sortLt lt_imp_vers import_usages)
where
upp_import_versions (Specifically nvs)
= dcolon <+> hsep [ hsep [ppr_unqual_name n, int v] | (n,v) <- sort_versions nvs ]
+{- SUP: What's this??
ifaceModuleDeps if_hdl [] = return ()
ifaceModuleDeps if_hdl mod_deps
= let
in
printForIface if_hdl (ptext SLIT("__depends") <+> vcat lines <> ptext SLIT(" ;")) >>
hPutStr if_hdl "\n"
+-}
+ifaceExports :: Handle -> Avails -> IO ()
ifaceExports if_hdl [] = return ()
ifaceExports if_hdl avails
= hPutCol if_hdl do_one_module (fmToList export_fm)
hsep (map upp_avail (sortLt lt_avail avails))
] <> semi
+ifaceFixities :: Handle -> Fixities -> IO ()
ifaceFixities if_hdl [] = return ()
ifaceFixities if_hdl fixities
= hPutCol if_hdl upp_fixity fixities
+ifaceRules :: Handle -> [ProtoCoreRule] -> IdSet -> IO ()
ifaceRules if_hdl rules emitted
| null orphan_rule_pretties && null local_id_pretties
= return ()
| otherwise
- = do printForIface if_hdl (vcat [
+ = printForIface if_hdl (vcat [
ptext SLIT("{-## __R"),
-
vcat orphan_rule_pretties,
-
vcat local_id_pretties,
-
ptext SLIT("##-}")
- ])
-
- return ()
+ ])
where
- orphan_rule_pretties = [ pprCoreRule (Just fn) rule <+> semi
+ orphan_rule_pretties = [ pprCoreRule (Just fn) rule
| ProtoCoreRule _ fn rule <- rules
]
- local_id_pretties = [ pprCoreRule (Just fn) rule <+> semi
+ local_id_pretties = [ pprCoreRule (Just fn) rule
| fn <- varSetElems emitted,
rule <- rulesRules (getIdSpecialisation fn),
all (`elemVarSet` emitted) (varSetElems (ruleSomeLhsFreeVars interestingId rule))
- -- Spit out a rule only if all its lhs free vars are eemitted
+ -- Spit out a rule only if all its lhs free vars are emitted
]
+
+ifaceDeprecations :: Handle -> [Deprecation Name] -> IO ()
+ifaceDeprecations if_hdl [] = return ()
+ifaceDeprecations if_hdl deprecations
+ = printForIface if_hdl (vcat [
+ ptext SLIT("{-## __D"),
+ vcat [ pprIfaceDeprec d <> semi | d <- deprecations ],
+ ptext SLIT("##-}")
+ ])
+ where
+ -- SUP: TEMPORARY HACK, ignoring module deprecations and constructors for now
+ pprIfaceDeprec (Deprecation (IEModuleContents _) txt) = doubleQuotes (ppr txt)
+ pprIfaceDeprec (Deprecation (IEVar n) txt) = ppr n <+> doubleQuotes (ppr txt)
\end{code}
%************************************************************************
-- 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))
+ forall_ty = mkSigmaTy tvs (classesToPreds theta)
+ (deNoteType (mkDictTy clas tys))
renumbered_ty = tidyTopType forall_ty
in
hcat [ptext SLIT("instance "), pprType renumbered_ty,
= Nothing -- Well, that was easy!
ifaceId get_idinfo needed_ids is_rec id rhs
- = Just (hsep [sig_pretty, prag_pretty, char ';'], new_needed_ids)
+ = ASSERT2( arity_matches_strictness, ppr id )
+ Just (hsep [sig_pretty, prag_pretty, char ';'], new_needed_ids)
where
core_idinfo = idInfo id
stg_idinfo = get_idinfo id
ptext SLIT("##-}")]
------------ Arity --------------
- arity_pretty = ppArityInfo (arityInfo stg_idinfo)
+ arity_info = arityInfo stg_idinfo
+ arity_pretty = ppArityInfo arity_info
------------ Caf Info --------------
caf_pretty = ppCafInfo (cafInfo stg_idinfo)
Just work_id = work_info
+ ------------ Occ info --------------
+ loop_breaker = case occInfo core_idinfo of
+ IAmALoopBreaker -> True
+ other -> False
+
------------ Unfolding --------------
inline_pragma = inlinePragInfo core_idinfo
dont_inline = case inline_pragma of
- IMustNotBeINLINEd -> True
- IAmALoopBreaker -> True
- other -> False
+ IMustNotBeINLINEd False Nothing -> True -- Unconditional NOINLINE
+ other -> False
+
- unfold_pretty | show_unfold = ptext SLIT("__U") <+> pprIfaceUnfolding rhs
+ unfold_pretty | show_unfold = ptext SLIT("__U") <> pprInlinePragInfo inline_pragma <+> pprIfaceUnfolding rhs
| otherwise = empty
show_unfold = not has_worker && -- Not unnecessary
not bottoming_fn && -- Not necessary
not dont_inline &&
+ not loop_breaker &&
rhs_is_small && -- Small enough
okToUnfoldInHiFile rhs -- No casms etc
find_fvs expr = exprSomeFreeVars interestingId expr
+ ------------ Sanity checking --------------
+ -- The arity of a wrapper function should match its strictness,
+ -- or else an importing module will get very confused indeed.
+ -- [later: actually all that is necessary is for strictness to exceed arity]
+ arity_matches_strictness
+ = not has_worker ||
+ case strict_info of
+ StrictnessInfo ds _ -> length ds >= arityLowerBound arity_info
+ other -> True
+
interestingId id = isId id && isLocallyDefined id &&
not (omitIfaceSigForId id)
\end{code}
%************************************************************************
\begin{code}
-ifaceTyCons hdl tycons = hPutCol hdl upp_tycon (sortLt (<) (filter (for_iface_name . getName) tycons ))
+ifaceTyCons hdl tycons = hPutCol hdl upp_tycon (sortLt (<) (filter (for_iface_name . getName) tycons))
ifaceClasses hdl classes = hPutCol hdl upp_class (sortLt (<) (filter (for_iface_name . getName) classes))
for_iface_name name = isLocallyDefined name &&
ifaceTyCon tycon
| isAlgTyCon tycon
= hsep [ ptext keyword,
- ppr_decl_context (tyConTheta tycon),
+ ppr_decl_class_context (tyConTheta tycon),
ppr (getName tycon),
pprTyVarBndrs (tyConTyVars tycon),
ptext SLIT("="),
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("=>")
+ <+> pprIfaceClasses ex_theta <+> ptext SLIT("=>")
ppr_arg_ty (strict_mark, ty) = ppr_strict_mark strict_mark <> pprParendType ty
ifaceClass clas
= hsep [ptext SLIT("class"),
- ppr_decl_context sc_theta,
+ ppr_decl_class_context sc_theta,
ppr clas, -- Print the name
pprTyVarBndrs clas_tyvars,
+ pprFundeps clas_fds,
pp_ops,
semi
]
where
- (clas_tyvars, sc_theta, _, sel_ids, defms) = classBigSig clas
+ (clas_tyvars, clas_fds, sc_theta, _, op_stuff) = classExtraBigSig clas
- pp_ops | null sel_ids = empty
- | otherwise = hsep [ptext SLIT("where"),
- braces (hsep (punctuate semi (zipWith ppr_classop sel_ids defms)))
- ]
+ pp_ops | null op_stuff = empty
+ | otherwise = hsep [ptext SLIT("where"),
+ braces (hsep (punctuate semi (map ppr_classop op_stuff)))
+ ]
- ppr_classop sel_id maybe_defm
+ ppr_classop (sel_id, dm_id, explicit_dm)
= ASSERT( sel_tyvars == clas_tyvars)
hsep [ppr (getOccName sel_id),
- if maybeToBool maybe_defm then equals else empty,
+ if explicit_dm then equals else empty,
dcolon,
ppr op_ty
]
ppr_decl_context [] = empty
ppr_decl_context theta = pprIfaceTheta theta <+> ptext SLIT(" =>")
+ppr_decl_class_context :: ClassContext -> SDoc
+ppr_decl_class_context [] = empty
+ppr_decl_class_context ctxt = pprIfaceClasses ctxt <+> 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]))
+pprIfaceTheta theta = braces (hsep (punctuate comma [pprIfacePred p | p <- theta]))
+
+-- ZZ - not sure who uses this - i.e. whether IParams really show up or not
+-- (it's not used to print normal value signatures)
+pprIfacePred :: PredType -> SDoc
+pprIfacePred (Class clas tys) = pprConstraint clas tys
+pprIfacePred (IParam n ty) = char '?' <> ppr n <+> ptext SLIT("::") <+> ppr ty
+
+pprIfaceClasses :: ClassContext -> SDoc
+pprIfaceClasses [] = empty
+pprIfaceClasses theta = braces (hsep (punctuate comma [pprConstraint c tys | (c,tys) <- theta]))
\end{code}
%************************************************************************
projects / ghc-hetmet.git / blobdiff