import HsCore ( HsIdInfo(..), UfExpr(..), toUfExpr, toUfBndr )
import HsTypes ( toHsTyVars )
import BasicTypes ( Fixity(..), NewOrData(..),
- Version, initialVersion, bumpVersion, isLoopBreaker
+ Version, initialVersion, bumpVersion,
)
import RnMonad
import RnHsSyn ( RenamedInstDecl, RenamedTyClDecl )
import TcHsSyn ( TypecheckedRuleDecl )
import HscTypes ( VersionInfo(..), ModIface(..), ModDetails(..),
IfaceDecls, mkIfaceDecls, dcl_tycl, dcl_rules, dcl_insts,
- TyThing(..), DFunId, TypeEnv, isTyClThing, Avails,
+ TyThing(..), DFunId, TypeEnv, Avails,
WhatsImported(..), GenAvailInfo(..),
ImportVersion, AvailInfo, Deprecations(..),
extendTypeEnvList
)
import CmdLineOpts
-import Id ( Id, idType, idInfo, omitIfaceSigForId,
- idSpecialisation, setIdInfo, isLocalId
+import Id ( idType, idInfo, isImplicitId, isDictFunId,
+ idSpecialisation, isLocalId, idName, hasNoBinding
)
import Var ( isId )
import VarSet
-import DataCon ( StrictnessMark(..), dataConSig, dataConFieldLabels, dataConStrictMarks )
+import DataCon ( StrictnessMark(..), dataConId, dataConSig, dataConFieldLabels, dataConStrictMarks )
import IdInfo -- Lots
import CoreSyn ( CoreBind, CoreRule(..), IdCoreRule,
isBuiltinRule, rulesRules,
bindersOf, bindersOfBinds
)
-import CoreFVs ( ruleSomeLhsFreeVars, ruleSomeFreeVars )
+import CoreFVs ( ruleSomeLhsFreeVars )
import CoreUnfold ( neverUnfold, unfoldingTemplate )
import Name ( getName, nameModule, Name, NamedThing(..) )
import Name -- Env
import OccName ( pprOccName )
-import TyCon ( TyCon, getSynTyConDefn, isSynTyCon, isNewTyCon, isAlgTyCon,
+import TyCon ( TyCon, getSynTyConDefn, isSynTyCon, isNewTyCon, isAlgTyCon, tyConGenIds,
tyConTheta, tyConTyVars, tyConDataCons, tyConFamilySize, isClassTyCon
)
-import Class ( classExtraBigSig, DefMeth(..) )
+import Class ( classExtraBigSig, classTyCon, DefMeth(..) )
import FieldLabel ( fieldLabelType )
import Type ( splitSigmaTy, tidyTopType, deNoteType )
import SrcLoc ( noSrcLoc )
%************************************************************************
\begin{code}
-mkModDetails :: TypeEnv -> [DFunId] -- From typechecker
- -> [CoreBind] -> [Id] -- Final bindings, plus the top-level Ids from the
- -- code generator; they have authoritative arity info
- -> [IdCoreRule] -- Tidy orphan rules
+mkModDetails :: TypeEnv -- From typechecker
+ -> [CoreBind] -- Final bindings
+ -- they have authoritative arity info
+ -> [IdCoreRule] -- Tidy orphan rules
-> ModDetails
-mkModDetails type_env dfun_ids tidy_binds stg_ids orphan_rules
+mkModDetails type_env tidy_binds orphan_rules
= ModDetails { md_types = new_type_env,
md_rules = rule_dcls,
- md_insts = dfun_ids }
+ md_insts = filter isDictFunId final_ids }
where
-- The competed type environment is gotten from
-- a) keeping the types and classes
-- b) removing all Ids,
-- c) adding Ids with correct IdInfo, including unfoldings,
-- gotten from the bindings
- -- From (c) we keep only those Ids with Global names, plus Ids
- -- accessible from them (notably via unfoldings)
+ -- From (c) we keep only those Ids with Global names;
+ -- the CoreTidy pass makes sure these are all and only
+ -- the externally-accessible ones
-- This truncates the type environment to include only the
-- exported Ids and things needed from them, which saves space
--
-- However, we do keep things like constructors, which should not appear
-- in interface files, because they are needed by importing modules when
-- using the compilation manager
- new_type_env = extendTypeEnvList (filterNameEnv isTyClThing type_env)
+ new_type_env = extendTypeEnvList (filterNameEnv keep_it type_env)
(map AnId final_ids)
- stg_id_set = mkVarSet stg_ids
- final_ids = [addStgInfo stg_id_set id | bind <- tidy_binds
- , id <- bindersOf bind
- , isGlobalName (idName id)]
+ -- We keep constructor workers, because they won't appear
+ -- in the bindings from which final_ids are derived!
+ keep_it (AnId id) = hasNoBinding id
+ keep_it other = True
+ final_ids = [id | bind <- tidy_binds
+ , id <- bindersOf bind
+ , isGlobalName (idName id)]
-- The complete rules are gotten by combining
-- a) the orphan rules
-- This version is used when we are re-linking a module
-- so we've only run the type checker on its previous interface
-mkModDetailsFromIface :: TypeEnv -> [DFunId] -- From typechecker
+mkModDetailsFromIface :: TypeEnv
-> [TypecheckedRuleDecl]
-> ModDetails
-mkModDetailsFromIface type_env dfun_ids rules
+mkModDetailsFromIface type_env rules
= ModDetails { md_types = type_env,
md_rules = rule_dcls,
md_insts = dfun_ids }
where
+ dfun_ids = [dfun_id | AnId dfun_id <- nameEnvElts type_env, isDictFunId dfun_id]
rule_dcls = [(id,rule) | IfaceRuleOut id rule <- rules]
-- All the rules from an interface are of the IfaceRuleOut form
\end{code}
-
-We have to add on the arity and CAF info computed by the code generator
-This is also the moment at which we may forget that this function has
-a worker: see the comments below
-
-\begin{code}
-addStgInfo :: IdSet -- Ids used at code-gen time; they have better pragma info!
- -> Id -> Id
-addStgInfo stg_ids id
- = id `setIdInfo` final_idinfo
- where
- idinfo = idInfo id
- idinfo' = idinfo `setArityInfo` stg_arity
- `setCafInfo` cafInfo stg_idinfo
- final_idinfo | worker_ok = idinfo'
- | otherwise = idinfo' `setWorkerInfo` NoWorker
-
- stg_idinfo = case lookupVarSet stg_ids id of
- Just id' -> idInfo id'
- Nothing -> pprTrace "ifaceBinds not found:" (ppr id) $
- idInfo id
-
- stg_arity = arityInfo stg_idinfo
-
- ------------ Worker --------------
- -- We only treat a function as having a worker if
- -- the exported arity (which is now the number of visible lambdas)
- -- is the same as the arity at the moment of the w/w split
- -- If so, we can safely omit the unfolding inside the wrapper, and
- -- instead re-generate it from the type/arity/strictness info
- -- But if the arity has changed, we just take the simple path and
- -- put the unfolding into the interface file, forgetting the fact
- -- that it's a wrapper.
- --
- -- How can this happen? Sometimes we get
- -- f = coerce t (\x y -> $wf x y)
- -- at the moment of w/w split; but the eta reducer turns it into
- -- f = coerce t $wf
- -- which is perfectly fine except that the exposed arity so far as
- -- the code generator is concerned (zero) differs from the arity
- -- when we did the split (2).
- --
- -- All this arises because we use 'arity' to mean "exactly how many
- -- top level lambdas are there" in interface files; but during the
- -- compilation of this module it means "how many things can I apply
- -- this to".
- worker_ok = case workerInfo idinfo of
- NoWorker -> True
- HasWorker work_id wrap_arity -> wrap_arity == arityLowerBound stg_arity
-\end{code}
-
-
\begin{code}
getRules :: [IdCoreRule] -- Orphan rules
-> [CoreBind] -- Bindings, with rules in the top-level Ids
ifaceTyCls (AClass clas) so_far
= cls_decl : so_far
where
- cls_decl = ClassDecl (toHsContext sc_theta)
- (getName clas)
- (toHsTyVars clas_tyvars)
- (toHsFDs clas_fds)
- (map toClassOpSig op_stuff)
- EmptyMonoBinds
- [] noSrcLoc
-
- (clas_tyvars, clas_fds, sc_theta, _, op_stuff) = classExtraBigSig clas
+ cls_decl = ClassDecl { tcdCtxt = toHsContext sc_theta,
+ tcdName = getName clas,
+ tcdTyVars = toHsTyVars clas_tyvars,
+ tcdFDs = toHsFDs clas_fds,
+ tcdSigs = map toClassOpSig op_stuff,
+ tcdMeths = Nothing,
+ tcdSysNames = sys_names,
+ tcdLoc = noSrcLoc }
+
+ (clas_tyvars, clas_fds, sc_theta, sc_sels, op_stuff) = classExtraBigSig clas
+ tycon = classTyCon clas
+ data_con = head (tyConDataCons tycon)
+ sys_names = mkClassDeclSysNames (getName tycon, getName data_con,
+ getName (dataConId data_con), map getName sc_sels)
toClassOpSig (sel_id, def_meth)
= ASSERT(sel_tyvars == clas_tyvars)
- ClassOpSig (getName sel_id) (Just def_meth') (toHsType op_ty) noSrcLoc
+ ClassOpSig (getName sel_id) def_meth' (toHsType op_ty) noSrcLoc
where
(sel_tyvars, _, op_ty) = splitSigmaTy (idType sel_id)
def_meth' = case def_meth of
| otherwise = ty_decl : so_far
where
ty_decl | isSynTyCon tycon
- = TySynonym (getName tycon)(toHsTyVars tyvars)
- (toHsType syn_ty) noSrcLoc
+ = TySynonym { tcdName = getName tycon,
+ tcdTyVars = toHsTyVars tyvars,
+ tcdSynRhs = toHsType syn_ty,
+ tcdLoc = noSrcLoc }
| isAlgTyCon tycon
- = TyData new_or_data (toHsContext (tyConTheta tycon))
- (getName tycon)
- (toHsTyVars tyvars)
- (map ifaceConDecl (tyConDataCons tycon))
- (tyConFamilySize tycon)
- Nothing noSrcLoc (panic "gen1") (panic "gen2")
+ = TyData { tcdND = new_or_data,
+ tcdCtxt = toHsContext (tyConTheta tycon),
+ tcdName = getName tycon,
+ tcdTyVars = toHsTyVars tyvars,
+ tcdCons = map ifaceConDecl (tyConDataCons tycon),
+ tcdNCons = tyConFamilySize tycon,
+ tcdDerivs = Nothing,
+ tcdSysNames = map getName (tyConGenIds tycon),
+ tcdLoc = noSrcLoc }
| otherwise = pprPanic "ifaceTyCls" (ppr tycon)
| otherwise = DataType
ifaceConDecl data_con
- = ConDecl (getName data_con) (error "ifaceConDecl")
+ = ConDecl (getName data_con) (getName (dataConId data_con))
(toHsTyVars ex_tyvars)
(toHsContext ex_theta)
details noSrcLoc
= ([getName field_label], mk_bang_ty strict_mark (fieldLabelType field_label))
ifaceTyCls (AnId id) so_far
- | omitIfaceSigForId id = so_far
- | otherwise = iface_sig : so_far
+ | isImplicitId id = so_far
+ | otherwise = iface_sig : so_far
where
- iface_sig = IfaceSig (getName id) (toHsType id_type) hs_idinfo noSrcLoc
+ iface_sig = IfaceSig { tcdName = getName id,
+ tcdType = toHsType id_type,
+ tcdIdInfo = hs_idinfo,
+ tcdLoc = noSrcLoc }
id_type = idType id
id_info = idInfo id
NoStrictnessInfo -> []
info -> [HsStrictness info]
-
------------ Worker --------------
work_info = workerInfo id_info
has_worker = case work_info of { HasWorker _ _ -> True; other -> False }
-- No old interface, so definitely write a new one!
= (new_iface, Just (text "No old interface available"))
-addVersionInfo (Just old_iface@(ModIface { mi_version = old_version,
- mi_decls = old_decls,
- mi_fixities = old_fixities }))
- new_iface@(ModIface { mi_decls = new_decls,
- mi_fixities = new_fixities })
+addVersionInfo (Just old_iface@(ModIface { mi_version = old_version,
+ mi_decls = old_decls,
+ mi_fixities = old_fixities,
+ mi_deprecs = old_deprecs }))
+ new_iface@(ModIface { mi_decls = new_decls,
+ mi_fixities = new_fixities,
+ mi_deprecs = new_deprecs })
| no_output_change && no_usage_change
= (new_iface, Nothing)
-- mi_globals field set to anything reasonable.
| otherwise -- Add updated version numbers
- = (final_iface, Just pp_tc_diffs)
+ = --pprTrace "completeIface" (ppr (dcl_tycl old_decls))
+ (final_iface, Just pp_diffs)
where
final_iface = new_iface { mi_version = new_version }
vers_rules = bumpVersion no_rule_change (vers_rules old_version),
vers_decls = tc_vers }
- no_output_change = no_tc_change && no_rule_change && no_export_change
+ no_output_change = no_tc_change && no_rule_change && no_export_change && no_deprec_change
no_usage_change = mi_usages old_iface == mi_usages new_iface
no_export_change = mi_exports old_iface == mi_exports new_iface -- Kept sorted
no_rule_change = dcl_rules old_decls == dcl_rules new_decls -- Ditto
+ no_deprec_change = old_deprecs == new_deprecs
-- Fill in the version number on the new declarations by looking at the old declarations.
-- Set the flag if anything changes.
old_vers_decls = vers_decls old_version
(no_tc_change, pp_tc_diffs, tc_vers) = diffDecls old_vers_decls old_fixities new_fixities
(dcl_tycl old_decls) (dcl_tycl new_decls)
-
-
+ pp_diffs = vcat [pp_tc_diffs,
+ pp_change no_export_change "Export list",
+ pp_change no_rule_change "Rules",
+ pp_change no_deprec_change "Deprecations",
+ pp_change no_usage_change "Usages"]
+ pp_change True what = empty
+ pp_change False what = text what <+> ptext SLIT("changed")
diffDecls :: NameEnv Version -- Old version map
-> NameEnv Fixity -> NameEnv Fixity -- Old and new fixities
same_fixity n = lookupNameEnv old_fixities n == lookupNameEnv new_fixities n
diff ok_so_far pp new_vers [] [] = (ok_so_far, pp, new_vers)
- diff ok_so_far pp new_vers old [] = (False, pp, new_vers)
+ diff ok_so_far pp new_vers (od:ods) [] = diff False (pp $$ only_old od) new_vers ods []
diff ok_so_far pp new_vers [] (nd:nds) = diff False (pp $$ only_new nd) new_vers [] nds
diff ok_so_far pp new_vers (od:ods) (nd:nds)
= case od_name `compare` nd_name of
od_name = tyClDeclName od
nd_name = tyClDeclName nd
new_vers' = extendNameEnv new_vers nd_name
- (bumpVersion True (lookupNameEnv_NF old_vers od_name))
+ (bumpVersion False (lookupNameEnv_NF old_vers od_name))
- only_old d = ptext SLIT("Only in old iface:") <+> ppr d
- only_new d = ptext SLIT("Only in new iface:") <+> ppr d
- changed d nd = ptext SLIT("Changed in iface: ") <+> ((ptext SLIT("Old:") <+> ppr d) $$
- (ptext SLIT("New:") <+> ppr nd))
+ only_old d = ptext SLIT("Only in old iface:") <+> ppr d
+ only_new d = ptext SLIT("Only in new iface:") <+> ppr d
+ changed od nd = ptext SLIT("Changed in iface: ") <+> ((ptext SLIT("Old:") <+> ppr od) $$
+ (ptext SLIT("New:") <+> ppr nd))
\end{code}
pp_versions (Specifically vm ve nvs vr) = dcolon <+> int vm <+> pp_export_version ve <+> int vr
<+> hsep [ pprOcc n <+> int v | (n,v) <- nvs ]
- -- HACK for the moment: print the export-list version even if
- -- we don't use it, so that syntax of interface files doesn't change
- pp_export_version Nothing = int 1
+ pp_export_version Nothing = empty
pp_export_version (Just v) = int v
\end{code}
projects / ghc-hetmet.git / blobdiff