import HsTypes ( HsTyVar(..) )
import HsPragmas ( noDataPragmas, noClassPragmas )
import RdrHsSyn
-import BasicTypes ( Fixity(..), FixityDirection(..), NewOrData(..), IfaceFlavour(..) )
+import BasicTypes ( Fixity(..), FixityDirection(..), NewOrData(..) )
+import PrelMods ( pRELUDE_Name )
import PrefixToHs
import CallConv
-import CmdLineOpts ( opt_NoImplicitPrelude, opt_GlasgowExts )
-import Name ( OccName, srcTvOcc, srcVarOcc, srcTCOcc,
- Module, mkModuleFS,
- isConOcc, isLexConId, isWildCardOcc
+import CmdLineOpts ( opt_NoImplicitPrelude, opt_GlasgowExts, opt_D_dump_rdr )
+import Module ( ModuleName, mkSrcModuleFS, WhereFrom(..) )
+import OccName ( NameSpace, tcName, clsName, tcClsName, varName, dataName, tvName,
+ isLexCon
+ )
+import RdrName ( RdrName, isRdrDataCon, mkSrcQual, mkSrcUnqual, mkPreludeQual,
+ dummyRdrVarName
)
import Outputable
+import ErrUtils ( dumpIfSet )
import SrcLoc ( SrcLoc )
-import PrelMods ( pRELUDE )
import FastString ( mkFastCharString )
import PrelRead ( readRational__ )
\end{code}
%************************************************************************
%* *
-\subsection[ReadPrefix-help]{Help Functions}
+\subsection[rdModule]{@rdModule@: reads in a Haskell module}
%* *
%************************************************************************
\begin{code}
-wlkList :: (U_VOID_STAR -> UgnM a) -> U_list -> UgnM [a]
-
-wlkList wlk_it U_lnil = returnUgn []
-
-wlkList wlk_it (U_lcons hd tl)
- = wlk_it hd `thenUgn` \ hd_it ->
- wlkList wlk_it tl `thenUgn` \ tl_it ->
- returnUgn (hd_it : tl_it)
-\end{code}
-
-\begin{code}
-wlkMaybe :: (U_VOID_STAR -> UgnM a) -> U_maybe -> UgnM (Maybe a)
-
-wlkMaybe wlk_it U_nothing = returnUgn Nothing
-wlkMaybe wlk_it (U_just x)
- = wlk_it x `thenUgn` \ it ->
- returnUgn (Just it)
-\end{code}
-
-\begin{code}
-wlkTCId = wlkQid srcTCOcc
-wlkVarId = wlkQid srcVarOcc
-wlkDataId = wlkQid srcVarOcc
-wlkEntId = wlkQid (\occ -> if isLexConId occ
- then srcTCOcc occ
- else srcVarOcc occ)
-
-wlkQid :: (FAST_STRING -> OccName) -> U_qid -> UgnM RdrName
-
--- There are three kinds of qid:
--- qualified name (aqual) A.x
--- unqualified name (noqual) x
--- special name (gid) [], (), ->, (,,,)
--- The special names always mean "Prelude.whatever"; that's why
--- they are distinct. So if you write "()", it's just as if you
--- had written "Prelude.()".
--- NB: The (qualified) prelude is always in scope, so the renamer will find it.
-
--- EXCEPT: when we're compiling with -fno-implicit-prelude, in which
--- case we need to unqualify these things. -- SDM.
-
-wlkQid mk_occ_name (U_noqual name)
- = returnUgn (Unqual (mk_occ_name name))
-wlkQid mk_occ_name (U_aqual mod name)
- = returnUgn (Qual (mkModuleFS mod) (mk_occ_name name) HiFile)
-wlkQid mk_occ_name (U_gid n name)
- | opt_NoImplicitPrelude
- = returnUgn (Unqual (mk_occ_name name))
- | otherwise
- = returnUgn (Qual pRELUDE (mk_occ_name name) HiFile)
-
-
-rdTCId pt = rdU_qid pt `thenUgn` wlkTCId
-rdVarId pt = rdU_qid pt `thenUgn` wlkVarId
+rdModule :: IO (ModuleName, -- this module's name
+ RdrNameHsModule) -- the main goods
-rdTvId pt = rdU_stringId pt `thenUgn` \ string -> wlkTvId string
-wlkTvId string = returnUgn (Unqual (srcTvOcc string))
+rdModule
+ = -- call the Yacc parser!
+ _ccall_ hspmain >>= \ pt ->
-cvFlag :: U_long -> Bool
-cvFlag 0 = False
-cvFlag 1 = True
-\end{code}
+ -- Read from the Yacc tree
+ initUgn (read_module pt) >>= \ (mod_name, rdr_module) ->
-%************************************************************************
-%* *
-\subsection[rdModule]{@rdModule@: reads in a Haskell module}
-%* *
-%************************************************************************
+ -- Dump if reqd
+ dumpIfSet opt_D_dump_rdr "Reader"
+ (ppr rdr_module) >>
-\begin{code}
-rdModule :: IO (Module, -- this module's name
- RdrNameHsModule) -- the main goods
+ -- And return
+ return (mod_name, rdr_module)
-rdModule
- = _ccall_ hspmain >>= \ pt -> -- call the Yacc parser!
- let
- srcfile = mkFastCharString ``input_filename'' -- What A Great Hack! (TM)
- in
- initUgn $
- rdU_tree pt `thenUgn` \ (U_hmodule mod_fs himplist hexplist
+read_module :: ParseTree -> UgnM (ModuleName, RdrNameHsModule)
+read_module pt
+ = rdU_tree pt `thenUgn` \ (U_hmodule mod_fs himplist hexplist
hmodlist srciface_version srcline) ->
let
- mod_name = mkModuleFS mod_fs
+ srcfile = mkFastCharString ``input_filename'' -- What A Great Hack! (TM)
+ mod_name = mkSrcModuleFS mod_fs
in
setSrcFileUgn srcfile $
- setSrcModUgn mod_name $
mkSrcLocUgn srcline $ \ src_loc ->
wlkMaybe rdEntities hexplist `thenUgn` \ exports ->
wlkBinding hmodlist `thenUgn` \ binding ->
let
- top_decls = cvTopDecls srcfile binding
+ top_decls = cvTopDecls srcfile binding
+ rdr_module = HsModule mod_name
+ (case srciface_version of { 0 -> Nothing; n -> Just n })
+ exports
+ imports
+ top_decls
+ src_loc
in
- returnUgn (mod_name,
- HsModule mod_name
- (case srciface_version of { 0 -> Nothing; n -> Just n })
- exports
- imports
- top_decls
- src_loc
- )
+ returnUgn (mod_name, rdr_module)
\end{code}
%************************************************************************
wlkLiteral lit `thenUgn` \ lit ->
returnUgn (LitPatIn lit)
- U_ident nn -> -- simple identifier
+ U_ident (U_noqual s) | s == SLIT("_")-> returnUgn WildPatIn -- Wild-card pattern
+
+ U_ident nn -> -- simple identifier
wlkVarId nn `thenUgn` \ n ->
- let occ = rdrNameOcc n in
returnUgn (
- if isConOcc occ then
+ if isRdrDataCon n then
ConPatIn n []
else
- if (isWildCardOcc occ) then WildPatIn else (VarPatIn n)
+ VarPatIn n
)
U_ap l r -> -- "application": there's a list of patterns lurking here!
wlkConAndTyVars ttype `thenUgn` \ (tycon, tyvars) ->
wlkList rdConDecl tcons `thenUgn` \ cons ->
wlkDerivings tderivs `thenUgn` \ derivings ->
- returnUgn (RdrTyClDecl (TyData DataType ctxt tycon tyvars cons derivings noDataPragmas src_loc))
+ returnUgn (RdrHsDecl (TyClD (TyData DataType ctxt tycon tyvars cons
+ derivings noDataPragmas src_loc)))
-- "newtype" declaration
U_ntbind ntctxt nttype ntcon ntderivs srcline ->
wlkConAndTyVars nttype `thenUgn` \ (tycon, tyvars) ->
wlkList rdConDecl ntcon `thenUgn` \ cons ->
wlkDerivings ntderivs `thenUgn` \ derivings ->
- returnUgn (RdrTyClDecl (TyData NewType ctxt tycon tyvars cons derivings noDataPragmas src_loc))
+ returnUgn (RdrHsDecl (TyClD (TyData NewType ctxt tycon tyvars cons
+ derivings noDataPragmas src_loc)))
-- "type" declaration
U_nbind nbindid nbindas srcline ->
mkSrcLocUgn srcline $ \ src_loc ->
wlkConAndTyVars nbindid `thenUgn` \ (tycon, tyvars) ->
wlkHsType nbindas `thenUgn` \ expansion ->
- returnUgn (RdrTyClDecl (TySynonym tycon tyvars expansion src_loc))
+ returnUgn (RdrHsDecl (TyClD (TySynonym tycon tyvars expansion src_loc)))
-- function binding
U_fbind fbindm srcline ->
let
(final_methods, final_sigs) = cvMonoBindsAndSigs sf cvClassOpSig binding
in
- returnUgn (RdrTyClDecl
- (mkClassDecl ctxt clas tyvars final_sigs final_methods noClassPragmas src_loc))
+ returnUgn (RdrHsDecl (TyClD (mkClassDecl ctxt clas tyvars final_sigs
+ final_methods noClassPragmas src_loc)))
-- "instance" declaration
U_ibind ty ibindw srcline ->
mkSrcLocUgn srcline $ \ src_loc ->
wlkInstType ty `thenUgn` \ inst_ty ->
wlkBinding ibindw `thenUgn` \ binding ->
- getSrcModUgn `thenUgn` \ modname ->
getSrcFileUgn `thenUgn` \ sf ->
let
(binds,uprags) = cvMonoBindsAndSigs sf cvInstDeclSig binding
in
- returnUgn (RdrInstDecl
- (InstDecl inst_ty binds uprags Nothing {- No dfun id -} src_loc))
+ returnUgn (RdrHsDecl (InstD (InstDecl inst_ty binds uprags
+ dummyRdrVarName {- No dfun id yet -}
+ src_loc)))
-- "default" declaration
U_dbind dbindts srcline ->
mkSrcLocUgn srcline $ \ src_loc ->
wlkList rdMonoType dbindts `thenUgn` \ tys ->
- returnUgn (RdrDefaultDecl (DefaultDecl tys src_loc))
+ returnUgn (RdrHsDecl (DefD (DefaultDecl tys src_loc)))
-- "foreign" declaration
U_fobind id ty ext_name unsafe_flag cconv imp_exp srcline ->
mkSrcLocUgn srcline $ \ src_loc ->
wlkVarId id `thenUgn` \ h_id ->
- wlkHsType ty `thenUgn` \ h_ty ->
+ wlkHsSigType ty `thenUgn` \ h_ty ->
wlkExtName ext_name `thenUgn` \ h_ext_name ->
rdCallConv cconv `thenUgn` \ h_cconv ->
rdForKind imp_exp (cvFlag unsafe_flag) `thenUgn` \ h_imp_exp ->
- returnUgn (RdrForeignDecl (ForeignDecl h_id h_imp_exp h_ty h_ext_name h_cconv src_loc))
+ returnUgn (RdrHsDecl (ForD (ForeignDecl h_id h_imp_exp h_ty h_ext_name h_cconv src_loc)))
U_sbind sbindids sbindid srcline ->
-- Type signature
-- value specialisation user-pragma
mkSrcLocUgn srcline $ \ src_loc ->
wlkVarId uvar `thenUgn` \ var ->
- wlkList rd_ty_and_id vspec_tys `thenUgn` \ tys_and_ids ->
- returnUgn (foldr1 RdrAndBindings [ RdrSig (SpecSig var ty using_id src_loc)
- | (ty, using_id) <- tys_and_ids ])
- where
- rd_ty_and_id :: ParseTree -> UgnM (RdrNameHsType, Maybe RdrName)
- rd_ty_and_id pt
- = rdU_binding pt `thenUgn` \ (U_vspec_ty_and_id vspec_ty vspec_id) ->
- wlkHsSigType vspec_ty `thenUgn` \ ty ->
- wlkMaybe rdVarId vspec_id `thenUgn` \ id_maybe ->
- returnUgn(ty, id_maybe)
-
- U_ispec_uprag iclas ispec_ty srcline ->
+ wlkList rdHsSigType vspec_tys `thenUgn` \ tys ->
+ returnUgn (foldr1 RdrAndBindings [ RdrSig (SpecSig var ty src_loc)
+ | ty <- tys ])
+
+ U_ispec_uprag ispec_ty srcline ->
-- instance specialisation user-pragma
mkSrcLocUgn srcline $ \ src_loc ->
- wlkHsSigType ispec_ty `thenUgn` \ ty ->
+ wlkInstType ispec_ty `thenUgn` \ ty ->
returnUgn (RdrSig (SpecInstSig ty src_loc))
U_inline_uprag ivar srcline ->
wlkVarId ivar `thenUgn` \ var ->
returnUgn (RdrSig (NoInlineSig var src_loc))
+ U_rule_prag name ivars ilhs irhs srcline ->
+ -- Transforamation rule
+ mkSrcLocUgn srcline $ \ src_loc ->
+ wlkList rdRuleBndr ivars `thenUgn` \ vars ->
+ rdExpr ilhs `thenUgn` \ lhs ->
+ rdExpr irhs `thenUgn` \ rhs ->
+ returnUgn (RdrHsDecl (RuleD (RuleDecl name [] vars lhs rhs src_loc)))
mkRdrFunctionBinding :: [RdrNameMatch] -> SrcLoc -> RdrNameMonoBinds
mkRdrFunctionBinding fun_matches src_loc
de_fun_match (Match _ [ConOpPatIn p1 fn _ p2] sig grhss) = (fn, True, Match [] [p1,p2] sig grhss)
+rdRuleBndr :: ParseTree -> UgnM RdrNameRuleBndr
+rdRuleBndr pt = rdU_rulevar pt `thenUgn` wlkRuleBndr
+
+wlkRuleBndr :: U_rulevar -> UgnM RdrNameRuleBndr
+wlkRuleBndr (U_prulevar v)
+ = returnUgn (RuleBndr (mkSrcUnqual varName v))
+wlkRuleBndr (U_prulevarsig v ty)
+ = wlkHsType ty `thenUgn` \ ty' ->
+ returnUgn (RuleBndrSig (mkSrcUnqual varName v) ty')
+
+
+
rdGRHSs :: ParseTree -> UgnM RdrNameGRHSs
rdGRHSs pt = rdU_grhsb pt `thenUgn` wlkGRHSs
%************************************************************************
\begin{code}
-rdHsType :: ParseTree -> UgnM RdrNameHsType
-rdMonoType :: ParseTree -> UgnM RdrNameHsType
+rdHsSigType :: ParseTree -> UgnM RdrNameHsType
+rdHsType :: ParseTree -> UgnM RdrNameHsType
+rdMonoType :: ParseTree -> UgnM RdrNameHsType
-rdHsType pt = rdU_ttype pt `thenUgn` wlkHsType
-rdMonoType pt = rdU_ttype pt `thenUgn` wlkHsType
+rdHsSigType pt = rdU_ttype pt `thenUgn` wlkHsSigType
+rdHsType pt = rdU_ttype pt `thenUgn` wlkHsType
+rdMonoType pt = rdU_ttype pt `thenUgn` wlkHsType
wlkHsConstrArgType ttype
-- Used for the argument types of contructors
-- make sure it starts with a ForAll
case ty of
HsForAllTy _ _ _ -> returnUgn ty
- other -> returnUgn (HsForAllTy [] [] ty)
+ other -> returnUgn (HsForAllTy Nothing [] ty)
wlkHsType :: U_ttype -> UgnM RdrNameHsType
wlkHsType ttype
= case ttype of
- U_forall u_tyvars u_theta u_ty -> -- context
+ U_forall u_tyvars u_theta u_ty -> -- Explicit forall
wlkList rdTvId u_tyvars `thenUgn` \ tyvars ->
wlkContext u_theta `thenUgn` \ theta ->
wlkHsType u_ty `thenUgn` \ ty ->
- returnUgn (HsForAllTy (map UserTyVar tyvars) theta ty)
+ returnUgn (HsForAllTy (Just (map UserTyVar tyvars)) theta ty)
+
+ U_imp_forall u_theta u_ty -> -- Implicit forall
+ wlkContext u_theta `thenUgn` \ theta ->
+ wlkHsType u_ty `thenUgn` \ ty ->
+ returnUgn (HsForAllTy Nothing theta ty)
U_namedtvar tv -> -- type variable
wlkTvId tv `thenUgn` \ tyvar ->
returnUgn (MonoTyVar tyvar)
U_tname tcon -> -- type constructor
- wlkTCId tcon `thenUgn` \ tycon ->
+ wlkTcId tcon `thenUgn` \ tycon ->
returnUgn (MonoTyVar tycon)
U_tapp t1 t2 ->
U_forall u_tyvars u_theta inst_head ->
wlkList rdTvId u_tyvars `thenUgn` \ tyvars ->
wlkContext u_theta `thenUgn` \ theta ->
- wlkConAndTys inst_head `thenUgn` \ (clas, tys) ->
- returnUgn (HsForAllTy (map UserTyVar tyvars) theta (MonoDictTy clas tys))
+ wlkClsTys inst_head `thenUgn` \ (clas, tys) ->
+ returnUgn (HsForAllTy (Just (map UserTyVar tyvars)) theta (MonoDictTy clas tys))
+
+ U_imp_forall u_theta inst_head ->
+ wlkContext u_theta `thenUgn` \ theta ->
+ wlkClsTys inst_head `thenUgn` \ (clas, tys) ->
+ returnUgn (HsForAllTy Nothing theta (MonoDictTy clas tys))
other -> -- something else
- wlkConAndTys other `thenUgn` \ (clas, tys) ->
- returnUgn (HsForAllTy [] [] (MonoDictTy clas tys))
+ wlkClsTys other `thenUgn` \ (clas, tys) ->
+ returnUgn (HsForAllTy Nothing [] (MonoDictTy clas tys))
\end{code}
\begin{code}
returnUgn (split ty [])
-wlkContext :: U_list -> UgnM RdrNameContext
-rdConAndTys :: ParseTree -> UgnM (RdrName, [HsType RdrName])
+wlkContext :: U_list -> UgnM RdrNameContext
+rdClsTys :: ParseTree -> UgnM (RdrName, [HsType RdrName])
-wlkContext list = wlkList rdConAndTys list
+wlkContext list = wlkList rdClsTys list
-rdConAndTys pt = rdU_ttype pt `thenUgn` wlkConAndTys
+rdClsTys pt = rdU_ttype pt `thenUgn` wlkClsTys
-wlkConAndTys ttype
- = wlkHsType ttype `thenUgn` \ ty ->
- let
- split (MonoTyApp fun ty) tys = split fun (ty : tys)
- split (MonoTyVar tycon) tys = (tycon, tys)
- split other tys = pprPanic "ERROR: malformed type: "
- (ppr other)
- in
- returnUgn (split ty [])
+wlkClsTys ttype
+ = go ttype []
+ where
+ go (U_tname tcon) tys = wlkClsId tcon `thenUgn` \ cls ->
+ returnUgn (cls, tys)
+
+ go (U_tapp t1 t2) tys = wlkHsType t2 `thenUgn` \ ty2 ->
+ go t1 (ty2 : tys)
\end{code}
\begin{code}
mkSrcLocUgn srcline $ \ src_loc ->
wlkMaybe rdU_stringId ias `thenUgn` \ maybe_as ->
wlkMaybe rd_spec ispec `thenUgn` \ maybe_spec ->
- returnUgn (ImportDecl (mkModuleFS imod)
+ returnUgn (ImportDecl (mkSrcModuleFS imod)
+ (cvImportSource isrc)
(cvFlag iqual)
- (cvIfaceFlavour isrc)
- (case maybe_as of { Just m -> Just (mkModuleFS m); Nothing -> Nothing })
+ (case maybe_as of { Just m -> Just (mkSrcModuleFS m); Nothing -> Nothing })
maybe_spec src_loc)
where
rd_spec pt = rdU_either pt `thenUgn` \ spec ->
U_right pt -> rdEntities pt `thenUgn` \ ents ->
returnUgn (True, ents)
-cvIfaceFlavour 0 = HiFile -- No pragam
-cvIfaceFlavour 1 = HiBootFile -- {-# SOURCE #-}
+cvImportSource 0 = ImportByUser -- No pragam
+cvImportSource 1 = ImportByUserSource -- {-# SOURCE #-}
\end{code}
\begin{code}
= rdU_entidt pt `thenUgn` \ entity ->
case entity of
U_entid evar -> -- just a value
- wlkEntId evar `thenUgn` \ var ->
+ wlkEntId evar `thenUgn` \ var ->
returnUgn (IEVar var)
U_enttype x -> -- abstract type constructor/class
- wlkTCId x `thenUgn` \ thing ->
+ wlkTcClsId x `thenUgn` \ thing ->
returnUgn (IEThingAbs thing)
U_enttypeall x -> -- non-abstract type constructor/class
- wlkTCId x `thenUgn` \ thing ->
+ wlkTcClsId x `thenUgn` \ thing ->
returnUgn (IEThingAll thing)
U_enttypenamed x ns -> -- non-abstract type constructor/class
-- with specified constrs/methods
- wlkTCId x `thenUgn` \ thing ->
+ wlkTcClsId x `thenUgn` \ thing ->
wlkList rdVarId ns `thenUgn` \ names ->
returnUgn (IEThingWith thing names)
U_entmod mod -> -- everything provided unqualified by a module
- returnUgn (IEModuleContents (mkModuleFS mod))
+ returnUgn (IEModuleContents (mkSrcModuleFS mod))
\end{code}
returnUgn FoLabel
\end{code}
+
+%************************************************************************
+%* *
+\subsection[ReadPrefix-help]{Help Functions}
+%* *
+%************************************************************************
+
+\begin{code}
+wlkList :: (U_VOID_STAR -> UgnM a) -> U_list -> UgnM [a]
+
+wlkList wlk_it U_lnil = returnUgn []
+
+wlkList wlk_it (U_lcons hd tl)
+ = wlk_it hd `thenUgn` \ hd_it ->
+ wlkList wlk_it tl `thenUgn` \ tl_it ->
+ returnUgn (hd_it : tl_it)
+\end{code}
+
+\begin{code}
+wlkMaybe :: (U_VOID_STAR -> UgnM a) -> U_maybe -> UgnM (Maybe a)
+
+wlkMaybe wlk_it U_nothing = returnUgn Nothing
+wlkMaybe wlk_it (U_just x)
+ = wlk_it x `thenUgn` \ it ->
+ returnUgn (Just it)
+\end{code}
+
+\begin{code}
+wlkTcClsId = wlkQid (\_ -> tcClsName)
+wlkTcId = wlkQid (\_ -> tcName)
+wlkClsId = wlkQid (\_ -> clsName)
+wlkVarId = wlkQid (\occ -> if isLexCon occ
+ then dataName
+ else varName)
+wlkDataId = wlkQid (\_ -> dataName)
+wlkEntId = wlkQid (\occ -> if isLexCon occ
+ then tcClsName
+ else varName)
+
+wlkQid :: (FAST_STRING -> NameSpace) -> U_qid -> UgnM RdrName
+
+-- There are three kinds of qid:
+-- qualified name (aqual) A.x
+-- unqualified name (noqual) x
+-- special name (gid) [], (), ->, (,,,)
+-- The special names always mean "Prelude.whatever"; that's why
+-- they are distinct. So if you write "()", it's just as if you
+-- had written "Prelude.()".
+-- NB: The (qualified) prelude is always in scope, so the renamer will find it.
+
+-- EXCEPT: when we're compiling with -fno-implicit-prelude, in which
+-- case we need to unqualify these things. -- SDM.
+
+wlkQid mk_name_space (U_noqual name)
+ = returnUgn (mkSrcUnqual (mk_name_space name) name)
+wlkQid mk_name_space (U_aqual mod name)
+ = returnUgn (mkSrcQual (mk_name_space name) mod name)
+wlkQid mk_name_space (U_gid n name) -- Built in Prelude things
+ | opt_NoImplicitPrelude
+ = returnUgn (mkSrcUnqual (mk_name_space name) name)
+ | otherwise
+ = returnUgn (mkPreludeQual (mk_name_space name) pRELUDE_Name name)
+
+
+rdTCId pt = rdU_qid pt `thenUgn` wlkTcId
+rdVarId pt = rdU_qid pt `thenUgn` wlkVarId
+
+rdTvId pt = rdU_stringId pt `thenUgn` \ string -> wlkTvId string
+wlkTvId string = returnUgn (mkSrcUnqual tvName string)
+
+-- Unqualified variables, used in the 'forall' of a RULE
+rdUVarId pt = rdU_stringId pt `thenUgn` \ string -> wlkUVarId string
+wlkUVarId string = returnUgn (mkSrcUnqual varName string)
+
+cvFlag :: U_long -> Bool
+cvFlag 0 = False
+cvFlag 1 = True
+\end{code}
+
projects / ghc-hetmet.git / blobdiff