import HsSyn
import RdrHsSyn ( RdrNameHsModule )
-import RnHsSyn ( RenamedHsModule, RenamedHsDecl, extractHsTyNames )
+import RnHsSyn ( RenamedHsModule, RenamedHsDecl, extractHsTyNames, extractHsCtxtTyNames )
-import CmdLineOpts ( opt_HiMap, opt_D_show_rn_trace,
- opt_D_dump_rn, opt_D_show_rn_stats,
+import CmdLineOpts ( opt_HiMap, opt_D_dump_rn_trace,
+ opt_D_dump_rn, opt_D_dump_rn_stats,
opt_WarnUnusedBinds, opt_WarnUnusedImports
)
import RnMonad
import RnNames ( getGlobalNames )
-import RnSource ( rnIfaceDecl, rnSourceDecls )
-import RnIfaces ( getImportedInstDecls, importDecl, getImportVersions, getSpecialInstModules,
- getDeferredDataDecls,
- mkSearchPath, getSlurpedNames, getRnStats
+import RnSource ( rnSourceDecls, rnDecl )
+import RnIfaces ( getImportedInstDecls, importDecl, getImportVersions,
+ getImportedRules, loadHomeInterface, getSlurped
)
-import RnEnv ( addImplicitOccsRn, availName, availNames, availsToNameSet,
- warnUnusedTopNames
+import RnEnv ( availName, availNames, availsToNameSet,
+ warnUnusedTopNames, mapFvRn,
+ FreeVars, plusFVs, plusFV, unitFV, emptyFVs, isEmptyFVs
)
-import Module ( pprModule )
+import Module ( Module, ModuleName, pprModule, mkSearchPath, mkThisModule )
import Name ( Name, isLocallyDefined,
NamedThing(..), ImportReason(..), Provenance(..),
- nameModule, pprOccName, nameOccName,
+ pprOccName, nameOccName,
getNameProvenance, occNameUserString,
+ maybeWiredInTyConName, maybeWiredInIdName, isWiredInName
)
+import Id ( idType )
+import DataCon ( dataConTyCon, dataConType )
+import TyCon ( TyCon, tyConDataCons, isSynTyCon, getSynTyConDefn )
import RdrName ( RdrName )
import NameSet
-import TyCon ( TyCon )
-import PrelMods ( mAIN, pREL_MAIN )
-import TysWiredIn ( unitTyCon, intTyCon, doubleTyCon )
+import PrelMods ( mAIN_Name, pREL_MAIN_Name )
+import TysWiredIn ( unitTyCon, intTyCon, doubleTyCon, boolTyCon )
import PrelInfo ( ioTyCon_NAME, thinAirIdNames )
-import Type ( funTyCon )
+import Type ( namesOfType, funTyCon )
import ErrUtils ( pprBagOfErrors, pprBagOfWarnings,
doIfSet, dumpIfSet, ghcExit
)
-import Bag ( isEmptyBag )
-import FiniteMap ( fmToList, delListFromFM )
+import BasicTypes ( NewOrData(..) )
+import Bag ( isEmptyBag, bagToList )
+import FiniteMap ( fmToList, delListFromFM, addToFM, sizeFM, eltsFM )
import UniqSupply ( UniqSupply )
import Util ( equivClasses )
import Maybes ( maybeToBool )
renameModule :: UniqSupply
-> RdrNameHsModule
-> IO (Maybe
- ( RenamedHsModule -- Output, after renaming
- , InterfaceDetails -- Interface; for interface file generatino
+ ( Module
+ , RenamedHsModule -- Output, after renaming
+ , InterfaceDetails -- Interface; for interface file generation
, RnNameSupply -- Final env; for renaming derivings
- , [Module] -- Imported modules; for profiling
+ , [ModuleName] -- Imported modules; for profiling
))
renameModule us this_mod@(HsModule mod_name vers exports imports local_decls loc)
-- Dump output, if any
(case maybe_rn_stuff of
Nothing -> return ()
- Just results@(rn_mod, _, _, _)
+ Just results@(_, rn_mod, _, _, _)
-> dumpIfSet opt_D_dump_rn "Renamer:"
(ppr rn_mod)
) >>
returnRn Nothing
else
let
- Just (export_env, rn_env, global_avail_env) = maybe_stuff
+ Just (export_env, gbl_env, fixity_env, global_avail_env) = maybe_stuff
in
-- RENAME THE SOURCE
- initRnMS rn_env SourceMode (
- addImplicits mod_name `thenRn_`
+ initRnMS gbl_env fixity_env SourceMode (
rnSourceDecls local_decls
- ) `thenRn` \ (rn_local_decls, fvs) ->
+ ) `thenRn` \ (rn_local_decls, source_fvs) ->
-- SLURP IN ALL THE NEEDED DECLARATIONS
- slurpDecls rn_local_decls `thenRn` \ rn_all_decls ->
+ let
+ real_source_fvs = implicitFVs mod_name `plusFV` source_fvs
+ -- It's important to do the "plus" this way round, so that
+ -- when compiling the prelude, locally-defined (), Bool, etc
+ -- override the implicit ones.
+ in
+ slurpImpDecls real_source_fvs `thenRn` \ rn_imp_decls ->
-- EXIT IF ERRORS FOUND
checkErrsRn `thenRn` \ no_errs_so_far ->
else
-- GENERATE THE VERSION/USAGE INFO
- getImportVersions mod_name exports `thenRn` \ import_versions ->
+ getImportVersions mod_name exports `thenRn` \ my_usages ->
getNameSupplyRn `thenRn` \ name_supply ->
-- REPORT UNUSED NAMES
- reportUnusedNames rn_env global_avail_env
+ reportUnusedNames gbl_env global_avail_env
export_env
- fvs `thenRn_`
+ source_fvs `thenRn_`
- -- GENERATE THE SPECIAL-INSTANCE MODULE LIST
- -- The "special instance" modules are those modules that contain instance
- -- declarations that contain no type constructor or class that was declared
- -- in that module.
- getSpecialInstModules `thenRn` \ imported_special_inst_mods ->
- let
- special_inst_decls = [d | InstD d@(InstDecl inst_ty _ _ _ _) <- rn_local_decls,
- all (not.isLocallyDefined) (nameSetToList (extractHsTyNames inst_ty))
- ]
- special_inst_mods | null special_inst_decls = imported_special_inst_mods
- | otherwise = mod_name : imported_special_inst_mods
- in
-
-
-- RETURN THE RENAMED MODULE
let
- import_mods = [mod | ImportDecl mod _ _ _ _ <- imports]
-
+ has_orphans = any isOrphanDecl rn_local_decls
+ direct_import_mods = [mod | ImportDecl mod _ _ _ _ _ <- imports]
+ rn_all_decls = rn_imp_decls ++ rn_local_decls
renamed_module = HsModule mod_name vers
trashed_exports trashed_imports
rn_all_decls
loc
in
- rnStats rn_all_decls `thenRn_`
- returnRn (Just (renamed_module,
- (import_versions, export_env, special_inst_mods),
- name_supply,
- import_mods))
+ rnStats rn_imp_decls `thenRn_`
+ returnRn (Just (mkThisModule mod_name,
+ renamed_module,
+ (has_orphans, my_usages, export_env),
+ name_supply,
+ direct_import_mods))
where
trashed_exports = {-trace "rnSource:trashed_exports"-} Nothing
trashed_imports = {-trace "rnSource:trashed_imports"-} []
\end{code}
-@addImplicits@ forces the renamer to slurp in some things which aren't
+@implicitFVs@ forces the renamer to slurp in some things which aren't
mentioned explicitly, but which might be needed by the type checker.
\begin{code}
-addImplicits mod_name
- = addImplicitOccsRn (implicit_main ++ default_tys ++ thinAirIdNames)
+implicitFVs mod_name
+ = implicit_main `plusFV`
+ mkNameSet default_tys `plusFV`
+ mkNameSet thinAirIdNames
where
-- Add occurrences for Int, Double, and (), because they
-- are the types to which ambigious type variables may be defaulted by
-- the type checker; so they won't always appear explicitly.
-- [The () one is a GHC extension for defaulting CCall results.]
-- ALSO: funTyCon, since it occurs implicitly everywhere!
- -- (we don't want to be bothered with addImplicitOcc at every
- -- function application)
+ -- (we don't want to be bothered with making funTyCon a
+ -- free var at every function application!)
default_tys = [getName intTyCon, getName doubleTyCon,
- getName unitTyCon, getName funTyCon]
+ getName unitTyCon, getName funTyCon, getName boolTyCon]
-- Add occurrences for IO or PrimIO
- implicit_main | mod_name == mAIN
- || mod_name == pREL_MAIN = [ioTyCon_NAME]
- | otherwise = []
+ implicit_main | mod_name == mAIN_Name
+ || mod_name == pREL_MAIN_Name = unitFV ioTyCon_NAME
+ | otherwise = emptyFVs
+\end{code}
+
+\begin{code}
+isOrphanDecl (InstD (InstDecl inst_ty _ _ _ _))
+ = not (foldNameSet ((||) . isLocallyDefined) False (extractHsTyNames inst_ty))
+isOrphanDecl (RuleD (RuleDecl _ _ _ lhs _ _))
+ = check lhs
+ where
+ check (HsVar v) = not (isLocallyDefined v)
+ check (HsApp f a) = check f && check a
+ check other = True
+isOrphanDecl other = False
\end{code}
+%*********************************************************
+%* *
+\subsection{Slurping declarations}
+%* *
+%*********************************************************
+
\begin{code}
-slurpDecls decls
- = -- First of all, get all the compulsory decls
- slurp_compulsories decls `thenRn` \ decls1 ->
+-------------------------------------------------------
+slurpImpDecls source_fvs
+ = traceRn (text "slurpImp" <+> fsep (map ppr (nameSetToList source_fvs))) `thenRn_`
+ -- The current slurped-set records all local things
+ getSlurped `thenRn` \ local_binders ->
+
+ slurpSourceRefs source_fvs `thenRn` \ (decls1, needed1, wired_in) ->
+ let
+ inst_gates1 = foldr (plusFV . getWiredInGates) source_fvs wired_in
+ inst_gates2 = foldr (plusFV . getGates source_fvs) inst_gates1 decls1
+ in
+ -- Do this first slurpDecls before the getImportedInstDecls,
+ -- so that the home modules of all the inst_gates will be sure to be loaded
+ slurpDecls decls1 needed1 `thenRn` \ (decls2, needed2) ->
+ mapRn_ (load_home local_binders) wired_in `thenRn_`
+
+ -- Now we can get the instance decls
+ getImportedInstDecls inst_gates2 `thenRn` \ inst_decls ->
+ rnIfaceDecls decls2 needed2 inst_decls `thenRn` \ (decls3, needed3) ->
+ closeDecls decls3 needed3
+ where
+ load_home local_binders name
+ | name `elemNameSet` local_binders = returnRn ()
+ -- When compiling the prelude, a wired-in thing may
+ -- be defined in this module, in which case we don't
+ -- want to load its home module!
+ -- Using 'isLocallyDefined' doesn't work because some of
+ -- the free variables returned are simply 'listTyCon_Name',
+ -- with a system provenance. We could look them up every time
+ -- but that seems a waste.
+ | otherwise = loadHomeInterface doc name `thenRn_`
+ returnRn ()
+ where
+ doc = ptext SLIT("need home module for wired in thing") <+> ppr name
+
+-------------------------------------------------------
+slurpSourceRefs :: FreeVars -- Variables referenced in source
+ -> RnMG ([RenamedHsDecl],
+ FreeVars, -- Un-satisfied needs
+ [Name]) -- Those variables referenced in the source
+ -- that turned out to be wired in things
+
+slurpSourceRefs source_fvs
+ = go [] emptyFVs [] (nameSetToList source_fvs)
+ where
+ go decls fvs wired []
+ = returnRn (decls, fvs, wired)
+ go decls fvs wired (wanted_name:refs)
+ | isWiredInName wanted_name
+ = go decls fvs (wanted_name:wired) refs
+ | otherwise
+ = importDecl wanted_name `thenRn` \ maybe_decl ->
+ case maybe_decl of
+ -- No declaration... (already slurped, or local)
+ Nothing -> go decls fvs wired refs
+ Just decl -> rnIfaceDecl decl `thenRn` \ (new_decl, fvs1) ->
+ go (new_decl : decls) (fvs1 `plusFV` fvs) wired
+ (extraGates new_decl ++ refs)
+
+-- Hack alert. If we suck in a class
+-- class Ord a => Baz a where ...
+-- then Eq is also a 'gate'. Why? Because Eq is a superclass of Ord,
+-- and hence may be needed during context reduction even though
+-- Eq is never mentioned explicitly. So we snaffle out the super-classes
+-- right now, so that slurpSourceRefs will heave them in
+--
+-- Similarly the RHS of type synonyms
+extraGates (TyClD (ClassDecl ctxt _ tvs _ _ _ _ _ _ _))
+ = nameSetToList (delListFromNameSet (extractHsCtxtTyNames ctxt) (map getTyVarName tvs))
+extraGates (TyClD (TySynonym _ tvs ty _))
+ = nameSetToList (delListFromNameSet (extractHsTyNames ty) (map getTyVarName tvs))
+extraGates other = []
+
+-------------------------------------------------------
+-- closeDecls keeps going until the free-var set is empty
+closeDecls decls needed
+ | not (isEmptyFVs needed)
+ = slurpDecls decls needed `thenRn` \ (decls1, needed1) ->
+ closeDecls decls1 needed1
+
+ | otherwise
+ = getImportedRules `thenRn` \ rule_decls ->
+ case rule_decls of
+ [] -> returnRn decls -- No new rules, so we are done
+ other -> rnIfaceDecls decls emptyFVs rule_decls `thenRn` \ (decls1, needed1) ->
+ closeDecls decls1 needed1
+
+
+-------------------------------------------------------
+rnIfaceDecls :: [RenamedHsDecl] -> FreeVars
+ -> [(Module, RdrNameHsDecl)]
+ -> RnM d ([RenamedHsDecl], FreeVars)
+rnIfaceDecls decls fvs [] = returnRn (decls, fvs)
+rnIfaceDecls decls fvs (d:ds) = rnIfaceDecl d `thenRn` \ (new_decl, fvs1) ->
+ rnIfaceDecls (new_decl:decls) (fvs1 `plusFV` fvs) ds
+
+rnIfaceDecl (mod, decl) = initIfaceRnMS mod (rnDecl decl)
+
+
+-------------------------------------------------------
+-- Augment decls with any decls needed by needed.
+-- Return also free vars of the new decls (only)
+slurpDecls decls needed
+ = go decls emptyFVs (nameSetToList needed)
+ where
+ go decls fvs [] = returnRn (decls, fvs)
+ go decls fvs (ref:refs) = slurpDecl decls fvs ref `thenRn` \ (decls1, fvs1) ->
+ go decls1 fvs1 refs
+
+-------------------------------------------------------
+slurpDecl decls fvs wanted_name
+ = importDecl wanted_name `thenRn` \ maybe_decl ->
+ case maybe_decl of
+ -- No declaration... (wired in thing)
+ Nothing -> returnRn (decls, fvs)
+
+ -- Found a declaration... rename it
+ Just decl -> rnIfaceDecl decl `thenRn` \ (new_decl, fvs1) ->
+ returnRn (new_decl:decls, fvs1 `plusFV` fvs)
+\end{code}
+
+
+%*********************************************************
+%* *
+\subsection{Extracting the 'gates'}
+%* *
+%*********************************************************
+
+When we import a declaration like
+
+ data T = T1 Wibble | T2 Wobble
- -- Next get the optional ones
- closeDecls optional_mode decls1 `thenRn` \ decls2 ->
+we don't want to treat Wibble and Wobble as gates *unless* T1, T2
+respectively are mentioned by the user program. If only T is mentioned
+we want only T to be a gate; that way we don't suck in useless instance
+decls for (say) Eq Wibble, when they can't possibly be useful.
- -- Finally get those deferred data type declarations
- getDeferredDataDecls `thenRn` \ data_decls ->
- mapRn (rn_data_decl compulsory_mode) data_decls `thenRn` \ rn_data_decls ->
+@getGates@ takes a newly imported (and renamed) decl, and the free
+vars of the source program, and extracts from the decl the gate names.
- -- Done
- returnRn (rn_data_decls ++ decls2)
+\begin{code}
+getGates source_fvs (SigD (IfaceSig _ ty _ _))
+ = extractHsTyNames ty
+getGates source_fvs (TyClD (ClassDecl ctxt cls tvs sigs _ _ _ _ _ _))
+ = delListFromNameSet (foldr (plusFV . get) (extractHsCtxtTyNames ctxt) sigs)
+ (map getTyVarName tvs)
+ `addOneToNameSet` cls
+ where
+ get (ClassOpSig n _ ty _)
+ | n `elemNameSet` source_fvs = extractHsTyNames ty
+ | otherwise = emptyFVs
+
+getGates source_fvs (TyClD (TySynonym tycon tvs ty _))
+ = delListFromNameSet (extractHsTyNames ty)
+ (map getTyVarName tvs)
+ `addOneToNameSet` tycon
+
+getGates source_fvs (TyClD (TyData _ ctxt tycon tvs cons _ _ _))
+ = delListFromNameSet (foldr (plusFV . get) (extractHsCtxtTyNames ctxt) cons)
+ (map getTyVarName tvs)
+ `addOneToNameSet` tycon
where
- compulsory_mode = InterfaceMode Compulsory
- optional_mode = InterfaceMode Optional
-
- -- The "slurp_compulsories" function is a loop that alternates
- -- between slurping compulsory decls and slurping the instance
- -- decls thus made relavant.
- -- We *must* loop again here. Why? Two reasons:
- -- (a) an instance decl will give rise to an unresolved dfun, whose
- -- decl we must slurp to get its version number; that's the version
- -- number for the whole instance decl. (And its unfolding might mention new
- -- unresolved names.)
- -- (b) an instance decl might give rise to a new unresolved class,
- -- whose decl we must slurp, which might let in some new instance decls,
- -- and so on. Example: instance Foo a => Baz [a] where ...
- slurp_compulsories decls
- = closeDecls compulsory_mode decls `thenRn` \ decls1 ->
+ get (ConDecl n tvs ctxt details _)
+ | n `elemNameSet` source_fvs
+ -- If the constructor is method, get fvs from all its fields
+ = delListFromNameSet (get_details details `plusFV`
+ extractHsCtxtTyNames ctxt)
+ (map getTyVarName tvs)
+ get (ConDecl n tvs ctxt (RecCon fields) _)
+ -- Even if the constructor isn't mentioned, the fields
+ -- might be, as selectors. They can't mention existentially
+ -- bound tyvars (typechecker checks for that) so no need for
+ -- the deleteListFromNameSet part
+ = foldr (plusFV . get_field) emptyFVs fields
- -- Instance decls still pending?
- getImportedInstDecls `thenRn` \ inst_decls ->
- if null inst_decls then
- -- No, none
- returnRn decls1
- else
- -- Yes, there are some, so rename them and loop
- traceRn (sep [ptext SLIT("Slurped"), int (length inst_decls), ptext SLIT("instance decls")])
- `thenRn_`
- mapRn (rn_inst_decl compulsory_mode) inst_decls `thenRn` \ new_inst_decls ->
- slurp_compulsories (new_inst_decls ++ decls1)
+ get other_con = emptyFVs
+
+ get_details (VanillaCon tys) = plusFVs (map get_bang tys)
+ get_details (InfixCon t1 t2) = get_bang t1 `plusFV` get_bang t2
+ get_details (RecCon fields) = plusFVs [get_bang t | (_, t) <- fields]
+ get_details (NewCon t _) = extractHsTyNames t
+
+ get_field (fs,t) | any (`elemNameSet` source_fvs) fs = get_bang t
+ | otherwise = emptyFVs
+
+ get_bang (Banged t) = extractHsTyNames t
+ get_bang (Unbanged t) = extractHsTyNames t
+ get_bang (Unpacked t) = extractHsTyNames t
+
+getGates source_fvs other_decl = emptyFVs
\end{code}
+getWiredInGates is just like getGates, but it sees a wired-in Name
+rather than a declaration.
+
\begin{code}
-closeDecls :: RnMode
- -> [RenamedHsDecl] -- Declarations got so far
- -> RnMG [RenamedHsDecl] -- input + extra decls slurped
- -- The monad includes a list of possibly-unresolved Names
- -- This list is empty when closeDecls returns
-
-closeDecls mode decls
- = popOccurrenceName mode `thenRn` \ maybe_unresolved ->
- case maybe_unresolved of
-
- -- No more unresolved names
- Nothing -> returnRn decls
-
- -- An unresolved name
- Just name_w_loc
- -> -- Slurp its declaration, if any
--- traceRn (sep [ptext SLIT("Considering"), ppr name_w_loc]) `thenRn_`
- importDecl name_w_loc mode `thenRn` \ maybe_decl ->
- case maybe_decl of
-
- -- No declaration... (wired in thing or optional)
- Nothing -> closeDecls mode decls
-
- -- Found a declaration... rename it
- Just decl -> rn_iface_decl mod_name mode decl `thenRn` \ new_decl ->
- closeDecls mode (new_decl : decls)
- where
- mod_name = nameModule (fst name_w_loc)
-
-rn_iface_decl mod_name mode decl
- = setModuleRn mod_name $
- initRnMS emptyRnEnv mode (rnIfaceDecl decl)
-
-rn_inst_decl mode (mod_name,decl) = rn_iface_decl mod_name mode (InstD decl)
-rn_data_decl mode (mod_name,ty_decl) = rn_iface_decl mod_name mode (TyClD ty_decl)
+getWiredInGates name | is_tycon = get_wired_tycon the_tycon
+ | otherwise = get_wired_id the_id
+ where
+ maybe_wired_in_tycon = maybeWiredInTyConName name
+ is_tycon = maybeToBool maybe_wired_in_tycon
+ maybe_wired_in_id = maybeWiredInIdName name
+ Just the_tycon = maybe_wired_in_tycon
+ Just the_id = maybe_wired_in_id
+
+get_wired_id id = namesOfType (idType id)
+
+get_wired_tycon tycon
+ | isSynTyCon tycon
+ = namesOfType ty `minusNameSet` mkNameSet (map getName tyvars)
+
+ | otherwise -- data or newtype
+ = foldr (unionNameSets . namesOfType . dataConType) emptyNameSet data_cons
+ where
+ (tyvars,ty) = getSynTyConDefn tycon
+ data_cons = tyConDataCons tycon
\end{code}
+
+%*********************************************************
+%* *
+\subsection{Unused names}
+%* *
+%*********************************************************
+
\begin{code}
-reportUnusedNames (RnEnv gbl_env _) avail_env (ExportEnv export_avails _) mentioned_names
+reportUnusedNames gbl_env avail_env (ExportEnv export_avails _) mentioned_names
| not (opt_WarnUnusedBinds || opt_WarnUnusedImports)
= returnRn ()
startsWithUnderscore other = False -- with an underscore
rnStats :: [RenamedHsDecl] -> RnMG ()
-rnStats all_decls
- | opt_D_show_rn_trace ||
- opt_D_show_rn_stats ||
+rnStats imp_decls
+ | opt_D_dump_rn_trace ||
+ opt_D_dump_rn_stats ||
opt_D_dump_rn
- = getRnStats all_decls `thenRn` \ msg ->
- ioToRnMG (printErrs msg) `thenRn_`
+ = getRnStats imp_decls `thenRn` \ msg ->
+ ioToRnM (printErrs msg) `thenRn_`
returnRn ()
| otherwise = returnRn ()
\end{code}
+
+
+%*********************************************************
+%* *
+\subsection{Statistics}
+%* *
+%*********************************************************
+
+\begin{code}
+getRnStats :: [RenamedHsDecl] -> RnMG SDoc
+getRnStats imported_decls
+ = getIfacesRn `thenRn` \ ifaces ->
+ let
+ n_mods = length [() | (_, _, Just _) <- eltsFM (iImpModInfo ifaces)]
+
+ decls_read = [decl | (_, avail, True, (_,decl)) <- nameEnvElts (iDecls ifaces),
+ -- Data, newtype, and class decls are in the decls_fm
+ -- under multiple names; the tycon/class, and each
+ -- constructor/class op too.
+ -- The 'True' selects just the 'main' decl
+ not (isLocallyDefined (availName avail))
+ ]
+
+ (cd_rd, dd_rd, nd_rd, sd_rd, vd_rd, _) = count_decls decls_read
+ (cd_sp, dd_sp, nd_sp, sd_sp, vd_sp, id_sp) = count_decls imported_decls
+
+ unslurped_insts = iInsts ifaces
+ inst_decls_unslurped = length (bagToList unslurped_insts)
+ inst_decls_read = id_sp + inst_decls_unslurped
+
+ stats = vcat
+ [int n_mods <+> text "interfaces read",
+ hsep [ int cd_sp, text "class decls imported, out of",
+ int cd_rd, text "read"],
+ hsep [ int dd_sp, text "data decls imported, out of",
+ int dd_rd, text "read"],
+ hsep [ int nd_sp, text "newtype decls imported, out of",
+ int nd_rd, text "read"],
+ hsep [int sd_sp, text "type synonym decls imported, out of",
+ int sd_rd, text "read"],
+ hsep [int vd_sp, text "value signatures imported, out of",
+ int vd_rd, text "read"],
+ hsep [int id_sp, text "instance decls imported, out of",
+ int inst_decls_read, text "read"],
+ text "cls dcls slurp" <+> fsep (map (ppr . tyClDeclName)
+ [d | TyClD d <- imported_decls, isClassDecl d]),
+ text "cls dcls read" <+> fsep (map (ppr . tyClDeclName)
+ [d | TyClD d <- decls_read, isClassDecl d])]
+ in
+ returnRn (hcat [text "Renamer stats: ", stats])
+
+count_decls decls
+ = (class_decls,
+ data_decls,
+ newtype_decls,
+ syn_decls,
+ val_decls,
+ inst_decls)
+ where
+ tycl_decls = [d | TyClD d <- decls]
+ (class_decls, data_decls, newtype_decls, syn_decls) = countTyClDecls tycl_decls
+
+ val_decls = length [() | SigD _ <- decls]
+ inst_decls = length [() | InstD _ <- decls]
+\end{code}
+
projects / ghc-hetmet.git / blobdiff