-
-
-
-\begin{code}
-writeIface this_mod old_iface new_iface
- local_tycons local_classes inst_info
- final_ids tidy_binds tidy_orphan_rules
- =
- if isNothing opt_HiDir && isNothing opt_HiFile
- then return () -- not producing any .hi file
- else
-
- let
- hi_suf = case opt_HiSuf of { Nothing -> "hi"; Just suf -> suf }
- filename = case opt_HiFile of {
- Just f -> f;
- Nothing ->
- case opt_HiDir of {
- Just dir -> dir ++ '/':moduleUserString this_mod
- ++ '.':hi_suf;
- Nothing -> panic "writeIface"
- }}
- in
-
- do maybe_final_iface <- checkIface old_iface full_new_iface
- case maybe_final_iface of {
- Nothing -> when opt_D_dump_rn_trace $
- putStrLn "Interface file unchanged" ; -- No need to update .hi file
-
- Just final_iface ->
-
- do let mod_vers_unchanged = case old_iface of
- Just iface -> pi_vers iface == pi_vers final_iface
- Nothing -> False
- when (mod_vers_unchanged && opt_D_dump_rn_trace) $
- putStrLn "Module version unchanged, but usages differ; hence need new hi file"
-
- if_hdl <- openFile filename WriteMode
- printForIface if_hdl (pprIface final_iface)
- hClose if_hdl
- }
- where
- full_new_iface = completeIface new_iface local_tycons local_classes
- inst_info final_ids tidy_binds
- tidy_orphan_rules
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection{Printing the interface}
-%* *
-%************************************************************************
-
-\begin{code}
-pprIface (ParsedIface { pi_mod = mod, pi_vers = mod_vers, pi_orphan = orphan,
- pi_usages = usages, pi_exports = exports,
- pi_fixity = (fix_vers, fixities),
- pi_insts = insts, pi_decls = decls,
- pi_rules = (rule_vers, rules), pi_deprecs = deprecs })
- = vcat [ ptext SLIT("__interface")
- <+> doubleQuotes (ptext opt_InPackage)
- <+> ppr mod <+> ppr mod_vers <+> pp_sub_vers
- <+> (if orphan then char '!' else empty)
- <+> int opt_HiVersion
- <+> ptext SLIT("where")
- , vcat (map pprExport exports)
- , vcat (map pprUsage usages)
- , pprFixities fixities
- , vcat [ppr i <+> semi | i <- insts]
- , vcat [ppr_vers v <+> ppr d <> semi | (v,d) <- decls]
- , pprRules rules
- , pprDeprecs deprecs
- ]
- where
- ppr_vers v | v == initialVersion = empty
- | otherwise = int v
- pp_sub_vers
- | fix_vers == initialVersion && rule_vers == initialVersion = empty
- | otherwise = brackets (ppr fix_vers <+> ppr rule_vers)
-\end{code}
-
-When printing export lists, we print like this:
- Avail f f
- AvailTC C [C, x, y] C(x,y)
- AvailTC C [x, y] C!(x,y) -- Exporting x, y but not C
-
-\begin{code}
-pprExport :: ExportItem -> SDoc
-pprExport (mod, items)
- = hsep [ ptext SLIT("__export "), ppr mod, hsep (map upp_avail items) ] <> semi
- where
- upp_avail :: RdrAvailInfo -> SDoc
- upp_avail (Avail name) = pprOccName name
- upp_avail (AvailTC name []) = empty
- upp_avail (AvailTC name ns) = hcat [pprOccName name, bang, upp_export ns']
- where
- bang | name `elem` ns = empty
- | otherwise = char '|'
- ns' = filter (/= name) ns
-
- upp_export [] = empty
- upp_export names = braces (hsep (map pprOccName names))
-\end{code}
-
-
-\begin{code}
-pprUsage :: ImportVersion OccName -> SDoc
-pprUsage (m, has_orphans, is_boot, whats_imported)
- = hsep [ptext SLIT("import"), pprModuleName m,
- pp_orphan, pp_boot,
- upp_import_versions whats_imported
- ] <> semi
- where
- pp_orphan | has_orphans = char '!'
- | otherwise = empty
- pp_boot | is_boot = char '@'
- | otherwise = empty
-
- -- Importing the whole module is indicated by an empty list
- upp_import_versions NothingAtAll = empty
- upp_import_versions (Everything v) = dcolon <+> int v
- upp_import_versions (Specifically vm vf vr nvs)
- = dcolon <+> int vm <+> int vf <+> int vr <+> hsep [ ppr n <+> int v | (n,v) <- nvs ]
-\end{code}
-
-
-\begin{code}
-pprFixities [] = empty
-pprFixities fixes = hsep (map ppr fixes) <> semi
-
-pprRules [] = empty
-pprRules rules = hsep [ptext SLIT("{-## __R"), hsep (map ppr rules), ptext SLIT("##-}")]
-
-pprDeprecs [] = empty
-pprDeprecs deps = hsep [ ptext SLIT("{-## __D"), guts, ptext SLIT("##-}")]
- where
- guts = hsep [ ppr ie <+> doubleQuotes (ppr txt) <> semi
- | Deprecation ie txt _ <- deps ]
-\end{code}
-
-