X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=sidebyside;f=ghc%2Fcompiler%2Fmain%2FMkIface.lhs;h=8540f9f5f4936e1e315e4ff166e8057f414749dc;hb=2ffefc1bfca0c8924825cd15750e7ced457f3c81;hp=1172df31526fa267d836395224805782d918c084;hpb=6e42e208ebcc405ef38f2ebc94837dae946c56a0;p=ghc-hetmet.git diff --git a/ghc/compiler/main/MkIface.lhs b/ghc/compiler/main/MkIface.lhs index 1172df3..8540f9f 100644 --- a/ghc/compiler/main/MkIface.lhs +++ b/ghc/compiler/main/MkIface.lhs @@ -5,7 +5,8 @@ \begin{code} module MkIface ( - mkModDetails, mkModDetailsFromIface, completeIface, writeIface + mkModDetails, mkModDetailsFromIface, completeIface, + writeIface, pprIface ) where #include "HsVersions.h" @@ -22,8 +23,7 @@ import TcHsSyn ( TypecheckedRuleDecl ) import HscTypes ( VersionInfo(..), IfaceDecls(..), ModIface(..), ModDetails(..), TyThing(..), DFunId, TypeEnv, isTyClThing, Avails, WhatsImported(..), GenAvailInfo(..), - ImportVersion, AvailInfo, Deprecations(..), - Finder, ModuleLocation(..) + ImportVersion, AvailInfo, Deprecations(..) ) import CmdLineOpts @@ -41,10 +41,9 @@ import CoreSyn ( CoreExpr, CoreBind, Bind(..), CoreRule(..), IdCoreRule, import CoreFVs ( exprSomeFreeVars, ruleSomeLhsFreeVars, ruleSomeFreeVars ) import CoreUnfold ( okToUnfoldInHiFile, mkTopUnfolding, neverUnfold, unfoldingTemplate, noUnfolding ) import Name ( isLocallyDefined, getName, - Name, NamedThing(..), - plusNameEnv, lookupNameEnv, emptyNameEnv, mkNameEnv, - extendNameEnv, lookupNameEnv_NF, nameEnvElts + Name, NamedThing(..) ) +import Name -- Env import OccName ( pprOccName ) import TyCon ( TyCon, getSynTyConDefn, isSynTyCon, isNewTyCon, isAlgTyCon, tyConTheta, tyConTyVars, tyConDataCons, tyConFamilySize @@ -54,7 +53,7 @@ import FieldLabel ( fieldLabelType ) import Type ( splitSigmaTy, tidyTopType, deNoteType ) import SrcLoc ( noSrcLoc ) import Outputable -import Module ( ModuleName, moduleName ) +import Module ( ModuleName ) import List ( partition ) import IO ( IOMode(..), openFile, hClose ) @@ -82,6 +81,14 @@ mkModDetails type_env dfun_ids tidy_binds stg_ids orphan_rules -- a) keeping the types and classes -- b) removing all Ids, and Ids with correct IdInfo -- gotten from the bindings + -- From (b) we keep only those Ids with Global names, plus Ids + -- accessible from them (notably via unfoldings) + -- 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 = mkNameEnv [(getName tycl, tycl) | tycl <- orig_type_env, isTyClThing tycl] `plusNameEnv` mkNameEnv [(idName id, AnId id) | id <- final_ids] @@ -119,16 +126,13 @@ mkModDetailsFromIface type_env dfun_ids rules completeIface :: Maybe ModIface -- The old interface, if we have it -> ModIface -- The new one, minus the decls and versions -> ModDetails -- The ModDetails for this module - -> Maybe (ModIface, SDoc) -- The new one, complete with decls and versions + -> (ModIface, Maybe SDoc) -- The new one, complete with decls and versions -- The SDoc is a debug document giving differences -- Nothing => no change -- NB: 'Nothing' means that even the usages havn't changed, so there's no -- need to write a new interface file. But even if the usages have -- changed, the module version may not have. - -- - -- The IO in the type is solely for debug output - -- In particular, dumping a record of what has changed completeIface maybe_old_iface new_iface mod_details = addVersionInfo maybe_old_iface (new_iface { mi_decls = new_decls }) where @@ -137,7 +141,7 @@ completeIface maybe_old_iface new_iface mod_details dcl_rules = rule_dcls } inst_dcls = map ifaceInstance (md_insts mod_details) - ty_cls_dcls = map ifaceTyCls (nameEnvElts (md_types mod_details)) + ty_cls_dcls = foldNameEnv ifaceTyCls [] (md_types mod_details) rule_dcls = map ifaceRule (md_rules mod_details) \end{code} @@ -149,19 +153,21 @@ completeIface maybe_old_iface new_iface mod_details %************************************************************************ \begin{code} -ifaceTyCls :: TyThing -> RenamedTyClDecl -ifaceTyCls (AClass clas) - = ClassDecl (toHsContext sc_theta) - (getName clas) - (toHsTyVars clas_tyvars) - (toHsFDs clas_fds) - (map toClassOpSig op_stuff) - EmptyMonoBinds - [] noSrcLoc +ifaceTyCls :: TyThing -> [RenamedTyClDecl] -> [RenamedTyClDecl] +ifaceTyCls (AClass clas) so_far + = cls_decl : so_far where - (clas_tyvars, clas_fds, sc_theta, _, op_stuff) = classExtraBigSig clas + cls_decl = ClassDecl (toHsContext sc_theta) + (getName clas) + (toHsTyVars clas_tyvars) + (toHsFDs clas_fds) + (map toClassOpSig op_stuff) + EmptyMonoBinds + [] noSrcLoc - toClassOpSig (sel_id, def_meth) + (clas_tyvars, clas_fds, sc_theta, _, op_stuff) = classExtraBigSig clas + + toClassOpSig (sel_id, def_meth) = ASSERT(sel_tyvars == clas_tyvars) ClassOpSig (getName sel_id) (Just def_meth') (toHsType op_ty) noSrcLoc where @@ -171,22 +177,26 @@ ifaceTyCls (AClass clas) GenDefMeth -> GenDefMeth DefMeth id -> DefMeth (getName id) -ifaceTyCls (ATyCon tycon) - | isSynTyCon tycon - = TySynonym (getName tycon)(toHsTyVars tyvars) (toHsType ty) noSrcLoc - where - (tyvars, ty) = getSynTyConDefn tycon - -ifaceTyCls (ATyCon tycon) - | 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") +ifaceTyCls (ATyCon tycon) so_far + = ty_decl : so_far + where - tyvars = tyConTyVars tycon + ty_decl | isSynTyCon tycon + = TySynonym (getName tycon)(toHsTyVars tyvars) + (toHsType syn_ty) 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") + + | otherwise = pprPanic "ifaceTyCls" (ppr tycon) + + tyvars = tyConTyVars tycon + (_, syn_ty) = getSynTyConDefn tycon new_or_data | isNewTyCon tycon = NewType | otherwise = DataType @@ -213,11 +223,12 @@ ifaceTyCls (ATyCon tycon) mk_field strict_mark field_label = ([getName field_label], mk_bang_ty strict_mark (fieldLabelType field_label)) -ifaceTyCls (ATyCon tycon) = pprPanic "ifaceTyCls" (ppr tycon) - -ifaceTyCls (AnId id) - = IfaceSig (getName id) (toHsType id_type) hs_idinfo noSrcLoc +ifaceTyCls (AnId id) so_far + | omitIfaceSigForId id = so_far + | otherwise = iface_sig : so_far where + iface_sig = IfaceSig (getName id) (toHsType id_type) hs_idinfo noSrcLoc + id_type = idType id id_info = idInfo id @@ -266,7 +277,7 @@ ifaceTyCls (AnId id) %* * %************************************************************************ -\begin{code} +\begin{code} ifaceInstance :: DFunId -> RenamedInstDecl ifaceInstance dfun_id = InstDecl (toHsType tidy_ty) EmptyMonoBinds [] (Just (getName dfun_id)) noSrcLoc @@ -327,17 +338,11 @@ bindsToIds needed_ids codegen_ids binds | otherwise = emitted go needed (NonRec id rhs : binds) emitted - | need_id needed id - = if omitIfaceSigForId id then - go (needed `delVarSet` id) binds (id:emitted) - else - go ((needed `unionVarSet` extras) `delVarSet` id) - binds - (new_id:emitted) - | otherwise - = go needed binds emitted + | need_id needed id = go new_needed binds (new_id:emitted) + | otherwise = go needed binds emitted where (new_id, extras) = mkFinalId codegen_ids False id rhs + new_needed = (needed `unionVarSet` extras) `delVarSet` id -- Recursive groups are a bit more of a pain. We may only need one to -- start with, but it may call out the next one, and so on. So we @@ -370,12 +375,15 @@ bindsToIds needed_ids codegen_ids binds \begin{code} mkFinalId :: IdSet -- The Ids with arity info from the code generator - -> Bool -- True <=> recursive, so don't include unfolding + -> Bool -- True <=> recursive, so don't include unfolding -> Id -> CoreExpr -- The Id's right hand side - -> (Id, IdSet) -- The emitted id, plus any *extra* needed Ids + -> (Id, IdSet) -- The emitted id, plus any *extra* needed Ids mkFinalId codegen_ids is_rec id rhs + | omitIfaceSigForId id + = (id, emptyVarSet) -- An optimisation for top-level constructors and suchlike + | otherwise = (id `setIdInfo` new_idinfo, new_needed_ids) where core_idinfo = idInfo id @@ -512,7 +520,7 @@ getRules orphan_rules binds emitted \begin{code} addVersionInfo :: Maybe ModIface -- The old interface, read from M.hi -> ModIface -- The new interface decls - -> Maybe (ModIface, SDoc) -- Nothing => no change; no need to write new Iface + -> (ModIface, Maybe SDoc) -- Nothing => no change; no need to write new Iface -- Just mi => Here is the new interface to write -- with correct version numbers @@ -522,7 +530,7 @@ addVersionInfo :: Maybe ModIface -- The old interface, read from M.hi addVersionInfo Nothing new_iface -- No old interface, so definitely write a new one! - = Just (new_iface, text "No old interface available") + = (new_iface, Just (text "No old interface available")) addVersionInfo (Just old_iface@(ModIface { mi_version = old_version, mi_decls = old_decls, @@ -531,10 +539,10 @@ addVersionInfo (Just old_iface@(ModIface { mi_version = old_version, mi_fixities = new_fixities }) | no_output_change && no_usage_change - = Nothing + = (old_iface, Nothing) | otherwise -- Add updated version numbers - = Just (final_iface, pp_tc_diffs) + = (final_iface, Just pp_tc_diffs) where final_iface = new_iface { mi_version = new_version } @@ -603,24 +611,14 @@ diffDecls old_vers old_fixities new_fixities old new %************************************************************************ \begin{code} -writeIface :: Finder -> Maybe ModIface -> IO () -writeIface finder Nothing - = return () - -writeIface finder (Just mod_iface) - = do { maybe_found <- finder mod_name ; - ; case maybe_found of { - Nothing -> printErrs (text "Can't write interface file for" <+> ppr mod_name) ; - Just (_, locn) -> - - do { let filename = hi_file locn - ; if_hdl <- openFile filename WriteMode +writeIface :: FilePath -> ModIface -> IO () +writeIface hi_path mod_iface + = do { if_hdl <- openFile hi_path WriteMode ; printForIface if_hdl (pprIface mod_iface) ; hClose if_hdl - }}} - where - mod_name = moduleName (mi_module mod_iface) + } +pprIface :: ModIface -> SDoc pprIface iface = vcat [ ptext SLIT("__interface") <+> doubleQuotes (ptext opt_InPackage) @@ -633,14 +631,13 @@ pprIface iface , vcat (map pprExport (mi_exports iface)) , vcat (map pprUsage (mi_usages iface)) - , pprIfaceDecls (vers_decls version_info) - (mi_fixities iface) - (mi_decls iface) - + , pprFixities (mi_fixities iface) (dcl_tycl decls) + , pprIfaceDecls (vers_decls version_info) decls , pprDeprecs (mi_deprecs iface) ] where version_info = mi_version iface + decls = mi_decls iface exp_vers = vers_exports version_info rule_vers = vers_rules version_info @@ -658,20 +655,17 @@ pprExport :: (ModuleName, Avails) -> SDoc pprExport (mod, items) = hsep [ ptext SLIT("__export "), ppr mod, hsep (map pp_avail items) ] <> semi where - ppr_name :: Name -> SDoc -- Print the occurrence name only - ppr_name n = ppr (nameOccName n) - pp_avail :: AvailInfo -> SDoc - pp_avail (Avail name) = ppr_name name - pp_avail (AvailTC name []) = empty - pp_avail (AvailTC name ns) = hcat [ppr_name name, bang, pp_export ns'] - where - bang | name `elem` ns = empty - | otherwise = char '|' - ns' = filter (/= name) ns + pp_avail (Avail name) = pprOcc name + pp_avail (AvailTC n []) = empty + pp_avail (AvailTC n (n':ns)) | n==n' = pprOcc n <> pp_export ns + | otherwise = pprOcc n <> char '|' <> pp_export (n':ns) pp_export [] = empty - pp_export names = braces (hsep (map ppr_name names)) + pp_export names = braces (hsep (map pprOcc names)) + +pprOcc :: Name -> SDoc -- Print the occurrence name only +pprOcc n = pprOccName (nameOccName n) \end{code} @@ -692,7 +686,7 @@ pprUsage (m, has_orphans, is_boot, whats_imported) pp_versions NothingAtAll = empty pp_versions (Everything v) = dcolon <+> int v pp_versions (Specifically vm ve nvs vr) = dcolon <+> int vm <+> pp_export_version ve <+> int vr - <+> hsep [ ppr n <+> int v | (n,v) <- nvs ] + <+> 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 @@ -701,27 +695,27 @@ pprUsage (m, has_orphans, is_boot, whats_imported) \end{code} \begin{code} -pprIfaceDecls version_map fixity_map decls +pprIfaceDecls version_map decls = vcat [ vcat [ppr i <+> semi | i <- dcl_insts decls] , vcat (map ppr_decl (dcl_tycl decls)) , pprRules (dcl_rules decls) ] where - ppr_decl d = (ppr_vers d <+> ppr d <> semi) $$ ppr_fixes d + ppr_decl d = ppr_vers d <+> ppr d <> semi -- Print the version for the decl ppr_vers d = case lookupNameEnv version_map (tyClDeclName d) of Nothing -> empty Just v -> int v - - -- Print fixities relevant to the decl - ppr_fixes d = vcat [ ppr fix <+> ppr n <> semi - | (n,_) <- tyClDeclNames d, - Just fix <- [lookupNameEnv fixity_map n] - ] \end{code} \begin{code} +pprFixities fixity_map decls + = hsep [ ppr fix <+> ppr n + | d <- decls, + (n,_) <- tyClDeclNames d, + Just fix <- [lookupNameEnv fixity_map n]] <> semi + pprRules [] = empty pprRules rules = hsep [ptext SLIT("{-## __R"), vcat (map ppr rules), ptext SLIT("##-}")] @@ -734,5 +728,5 @@ pprDeprecs deprecs = ptext SLIT("{-## __D") <+> guts <+> ptext SLIT("##-}") pp_deprecs env = vcat (punctuate semi (map pp_deprec (nameEnvElts env))) where - pp_deprec (name, txt) = pprOccName (nameOccName name) <+> ptext txt + pp_deprec (name, txt) = pprOcc name <+> ptext txt \end{code}