\begin{code}
module OccName (
- -- Modules
- Module, -- Abstract, instance of Outputable
- mkSrcModule, mkSrcModuleFS, mkSysModuleFS, mkImportModuleFS, mkBootModule, mkIfaceModuleFS,
- moduleString, moduleUserString, moduleIfaceFlavour,
- pprModule, pprModuleSep, pprModuleBoot,
-
- -- IfaceFlavour
- IfaceFlavour,
- hiFile, hiBootFile, bootFlavour,
-
-- The NameSpace type; abstact
NameSpace, tcName, clsName, tcClsName, dataName, varName, tvName,
nameSpaceString,
TidyOccEnv, emptyTidyOccEnv, tidyOccName, initTidyOccEnv,
-- Encoding
- EncodedString, EncodedFS, UserString, UserFS, encode, encodeFS, decode,
+ EncodedString, EncodedFS, UserString, UserFS, encode, encodeFS, decode, pprEncodedFS,
-- The basic form of names
isLexCon, isLexVar, isLexId, isLexSym,
ptext fs
\end{code}
-
-%************************************************************************
-%* *
-\subsection{Interface file flavour}
-%* *
-%************************************************************************
-
-The IfaceFlavour type is used mainly in an imported Name's Provenance
-to say whether the name comes from a regular .hi file, or whether it comes
-from a hand-written .hi-boot file. This is important, because it has to be
-propagated. Suppose
-
- C.hs imports B
- B.hs imports A
- A.hs imports C {-# SOURCE -#} ( f )
-
-Then in A.hi we may mention C.f, in an inlining. When compiling B we *must not*
-read C.f's details from C.hi, even if the latter happens to exist from an earlier
-compilation run. So we use the name "C!f" in A.hi, and when looking for an interface
-file with details of C!f we look in C.hi-boot. The "!" stuff is recorded in the
-IfaceFlavour in the Module of C.f in A.
-
-Not particularly beautiful, but it works.
-
-\begin{code}
-data IfaceFlavour = HiFile -- The thing comes from a standard interface file
- -- or from the source file itself
- | HiBootFile -- ... or from a handwritten "hi-boot" interface file
- deriving( Eq )
-
-hiFile = HiFile
-hiBootFile = HiBootFile
-
-instance Text IfaceFlavour where -- Just used in debug prints of lex tokens
- showsPrec n HiFile s = s
- showsPrec n HiBootFile s = "!" ++ s
-
-bootFlavour :: IfaceFlavour -> Bool
-bootFlavour HiBootFile = True
-bootFlavour HiFile = False
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection[Module]{The name of a module}
-%* *
-%************************************************************************
-
-\begin{code}
-data Module = Module
- EncodedFS
- IfaceFlavour
- -- Haskell module names can include the quote character ',
- -- so the module names have the z-encoding applied to them
-\end{code}
-
-\begin{code}
-instance Outputable Module where
- ppr = pprModule
-
--- Ignore the IfaceFlavour when comparing modules
-instance Eq Module where
- (Module m1 _) == (Module m2 _) = m1 == m2
-
-instance Ord Module where
- (Module m1 _) `compare` (Module m2 _) = m1 `compare` m2
-\end{code}
-
-
-\begin{code}
-pprModule :: Module -> SDoc
-pprModule (Module mod _) = pprEncodedFS mod
-
-pprModuleSep, pprModuleBoot :: Module -> SDoc
-pprModuleSep (Module mod HiFile) = dot
-pprModuleSep (Module mod HiBootFile) = char '!'
-
-pprModuleBoot (Module mod HiFile) = empty
-pprModuleBoot (Module mod HiBootFile) = char '!'
-\end{code}
-
-
-\begin{code}
-mkSrcModule :: UserString -> Module
-mkSrcModule s = Module (_PK_ (encode s)) HiFile
-
-mkSrcModuleFS :: UserFS -> Module
-mkSrcModuleFS s = Module (encodeFS s) HiFile
-
-mkImportModuleFS :: UserFS -> IfaceFlavour -> Module
-mkImportModuleFS s hif = Module (encodeFS s) hif
-
-mkSysModuleFS :: EncodedFS -> IfaceFlavour -> Module
-mkSysModuleFS s hif = Module s hif
-
-mkIfaceModuleFS :: EncodedFS -> Module
-mkIfaceModuleFS s = Module s HiFile
-
-mkBootModule :: Module -> Module
-mkBootModule (Module s _) = Module s HiBootFile
-
-moduleString :: Module -> EncodedString
-moduleString (Module mod _) = _UNPK_ mod
-
-moduleUserString :: Module -> UserString
-moduleUserString (Module mod _) = decode (_UNPK_ mod)
-
-moduleIfaceFlavour :: Module -> IfaceFlavour
-moduleIfaceFlavour (Module _ hif) = hif
-\end{code}
-
-
%************************************************************************
%* *
\subsection{Name space}
go (c:cs) = encode_ch c ++ go cs
-- ToDo: Unboxed tuples too, perhaps?
-maybe_tuple ('(' : cs) = check_tuple 0 cs
+maybe_tuple ('(' : cs) = check_tuple (0::Int) cs
maybe_tuple other = Nothing
check_tuple :: Int -> String -> Maybe Int