2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
4 \section{Dealing with interface files}
8 loadInterface, loadInterfaceForName, loadWiredInHomeIface,
9 loadSrcInterface, loadSysInterface, loadOrphanModules,
10 findAndReadIface, readIface, -- Used when reading the module's old interface
11 loadDecls, ifaceStats, discardDeclPrags,
12 initExternalPackageState,
14 pprModIface, showIface -- Print the iface in Foo.hi
17 #include "HsVersions.h"
19 import {-# SOURCE #-} TcIface( tcIfaceDecl, tcIfaceRule, tcIfaceInst )
21 import DynFlags ( DynFlags(..), DynFlag( Opt_IgnoreInterfacePragmas ) )
22 import IfaceSyn ( IfaceDecl(..), IfaceConDecl(..), IfaceClassOp(..),
23 IfaceConDecls(..), IfaceFamInst(..),
25 import IfaceEnv ( newGlobalBinder, lookupIfaceTc )
26 import HscTypes ( ModIface(..), TyThing, IfaceExport, Usage(..),
27 Deprecs(..), Dependencies(..),
28 emptyModIface, EpsStats(..), GenAvailInfo(..),
29 addEpsInStats, ExternalPackageState(..),
30 PackageTypeEnv, emptyTypeEnv, HscEnv(..),
31 lookupIfaceByModule, emptyPackageIfaceTable,
32 IsBootInterface, mkIfaceFixCache,
36 import BasicTypes ( Version, initialVersion,
37 Fixity(..), FixityDirection(..), isMarkedStrict )
39 import Type ( TyThing(..) )
40 import Class ( classATs )
42 import PrelNames ( gHC_PRIM )
43 import PrelInfo ( ghcPrimExports )
44 import PrelRules ( builtinRules )
45 import Rules ( extendRuleBaseList, mkRuleBase )
46 import InstEnv ( emptyInstEnv, extendInstEnvList )
47 import Name ( Name {-instance NamedThing-}, getOccName,
48 nameModule, nameIsLocalOrFrom, isWiredInName )
52 import OccName ( OccName, mkOccEnv, lookupOccEnv, mkClassTyConOcc,
53 mkClassDataConOcc, mkSuperDictSelOcc,
54 mkDataConWrapperOcc, mkDataConWorkerOcc,
55 mkNewTyCoOcc, mkInstTyTcOcc, mkInstTyCoOcc )
56 import SrcLoc ( importedSrcLoc )
57 import Maybes ( MaybeErr(..) )
58 import ErrUtils ( Message )
59 import Finder ( findImportedModule, findExactModule,
60 FindResult(..), cannotFindInterface )
62 import StaticFlags ( opt_HiVersion )
64 import BinIface ( readBinIface, v_IgnoreHiWay )
65 import Binary ( getBinFileWithDict )
66 import Panic ( ghcError, tryMost, showException, GhcException(..) )
68 import Maybe ( isJust )
69 import DATA_IOREF ( writeIORef )
73 %************************************************************************
75 loadSrcInterface, loadOrphanModules, loadHomeInterface
77 These three are called from TcM-land
79 %************************************************************************
82 -- | Load the interface corresponding to an @import@ directive in
83 -- source code. On a failure, fail in the monad with an error message.
84 loadSrcInterface :: SDoc -> ModuleName -> IsBootInterface -> RnM ModIface
85 loadSrcInterface doc mod want_boot = do
86 -- We must first find which Module this import refers to. This involves
87 -- calling the Finder, which as a side effect will search the filesystem
88 -- and create a ModLocation. If successful, loadIface will read the
89 -- interface; it will call the Finder again, but the ModLocation will be
90 -- cached from the first search.
92 res <- ioToIOEnv $ findImportedModule hsc_env mod Nothing
95 mb_iface <- initIfaceTcRn $ loadInterface doc mod (ImportByUser want_boot)
97 Failed err -> failWithTc err
98 Succeeded iface -> return iface
100 let dflags = hsc_dflags hsc_env in
101 failWithTc (cannotFindInterface dflags mod err)
103 -- | Load interfaces for a collection of orphan modules.
104 loadOrphanModules :: [Module] -> TcM ()
105 loadOrphanModules mods
106 | null mods = returnM ()
107 | otherwise = initIfaceTcRn $
108 do { traceIf (text "Loading orphan modules:" <+>
113 load mod = loadSysInterface (mk_doc mod) mod
114 mk_doc mod = ppr mod <+> ptext SLIT("is a orphan-instance module")
116 -- | Loads the interface for a given Name.
117 loadInterfaceForName :: SDoc -> Name -> TcRn ModIface
118 loadInterfaceForName doc name
121 -- Should not be called with a name from the module being compiled
122 this_mod <- getModule
123 ; ASSERT2( not (nameIsLocalOrFrom this_mod name), ppr name <+> parens doc )
125 initIfaceTcRn $ loadSysInterface doc (nameModule name)
128 -- | An 'IfM' function to load the home interface for a wired-in thing,
129 -- so that we're sure that we see its instance declarations and rules
130 loadWiredInHomeIface :: Name -> IfM lcl ()
131 loadWiredInHomeIface name
132 = ASSERT( isWiredInName name )
133 do loadSysInterface doc (nameModule name); return ()
135 doc = ptext SLIT("Need home interface for wired-in thing") <+> ppr name
137 -- | A wrapper for 'loadInterface' that throws an exception if it fails
138 loadSysInterface :: SDoc -> Module -> IfM lcl ModIface
139 loadSysInterface doc mod_name
140 = do { mb_iface <- loadInterface doc mod_name ImportBySystem
142 Failed err -> ghcError (ProgramError (showSDoc err))
143 Succeeded iface -> return iface }
147 %*********************************************************
151 The main function to load an interface
152 for an imported module, and put it in
153 the External Package State
155 %*********************************************************
158 loadInterface :: SDoc -> Module -> WhereFrom
159 -> IfM lcl (MaybeErr Message ModIface)
161 -- If it can't find a suitable interface file, we
162 -- a) modify the PackageIfaceTable to have an empty entry
163 -- (to avoid repeated complaints)
164 -- b) return (Left message)
166 -- It's not necessarily an error for there not to be an interface
167 -- file -- perhaps the module has changed, and that interface
170 loadInterface doc_str mod from
171 = do { -- Read the state
172 (eps,hpt) <- getEpsAndHpt
174 ; traceIf (text "Considering whether to load" <+> ppr mod <+> ppr from)
176 -- Check whether we have the interface already
178 ; case lookupIfaceByModule dflags hpt (eps_PIT eps) mod of {
180 -> returnM (Succeeded iface) ; -- Already loaded
181 -- The (src_imp == mi_boot iface) test checks that the already-loaded
182 -- interface isn't a boot iface. This can conceivably happen,
183 -- if an earlier import had a before we got to real imports. I think.
186 { let { hi_boot_file = case from of
187 ImportByUser usr_boot -> usr_boot
188 ImportBySystem -> sys_boot
190 ; mb_dep = lookupUFM (eps_is_boot eps) (moduleName mod)
191 ; sys_boot = case mb_dep of
192 Just (_, is_boot) -> is_boot
194 -- The boot-ness of the requested interface,
195 } -- based on the dependencies in directly-imported modules
197 -- READ THE MODULE IN
198 ; read_result <- findAndReadIface doc_str mod hi_boot_file
199 ; case read_result of {
201 { let fake_iface = emptyModIface mod
203 ; updateEps_ $ \eps ->
204 eps { eps_PIT = extendModuleEnv (eps_PIT eps) (mi_module fake_iface) fake_iface }
205 -- Not found, so add an empty iface to
206 -- the EPS map so that we don't look again
208 ; returnM (Failed err) } ;
211 Succeeded (iface, file_path) -- Sanity check:
212 | ImportBySystem <- from, -- system-importing...
213 modulePackageId (mi_module iface) == thisPackage dflags,
214 -- a home-package module...
215 Nothing <- mb_dep -- that we know nothing about
216 -> returnM (Failed (badDepMsg mod))
221 loc_doc = text file_path
223 initIfaceLcl mod loc_doc $ do
225 -- Load the new ModIface into the External Package State
226 -- Even home-package interfaces loaded by loadInterface
227 -- (which only happens in OneShot mode; in Batch/Interactive
228 -- mode, home-package modules are loaded one by one into the HPT)
229 -- are put in the EPS.
231 -- The main thing is to add the ModIface to the PIT, but
233 -- IfaceDecls, IfaceInst, IfaceRules
234 -- out of the ModIface and put them into the big EPS pools
236 -- NB: *first* we do loadDecl, so that the provenance of all the locally-defined
237 --- names is done correctly (notably, whether this is an .hi file or .hi-boot file).
238 -- If we do loadExport first the wrong info gets into the cache (unless we
239 -- explicitly tag each export which seems a bit of a bore)
241 ; ignore_prags <- doptM Opt_IgnoreInterfacePragmas
242 ; new_eps_decls <- loadDecls ignore_prags (mi_decls iface)
243 ; new_eps_insts <- mapM tcIfaceInst (mi_insts iface)
244 ; new_eps_rules <- if ignore_prags
246 else mapM tcIfaceRule (mi_rules iface)
248 ; let { final_iface = iface { mi_decls = panic "No mi_decls in PIT",
249 mi_insts = panic "No mi_insts in PIT",
250 mi_rules = panic "No mi_rules in PIT" } }
252 ; updateEps_ $ \ eps ->
253 eps { eps_PIT = extendModuleEnv (eps_PIT eps) mod final_iface,
254 eps_PTE = addDeclsToPTE (eps_PTE eps) new_eps_decls,
255 eps_rule_base = extendRuleBaseList (eps_rule_base eps) new_eps_rules,
256 eps_inst_env = extendInstEnvList (eps_inst_env eps) new_eps_insts,
257 eps_stats = addEpsInStats (eps_stats eps) (length new_eps_decls)
258 (length new_eps_insts) (length new_eps_rules) }
260 ; return (Succeeded final_iface)
264 = hang (ptext SLIT("Interface file inconsistency:"))
265 2 (sep [ptext SLIT("home-package module") <+> quotes (ppr mod) <+> ptext SLIT("is mentioned,"),
266 ptext SLIT("but does not appear in the dependencies of the interface")])
268 -----------------------------------------------------
269 -- Loading type/class/value decls
270 -- We pass the full Module name here, replete with
271 -- its package info, so that we can build a Name for
272 -- each binder with the right package info in it
273 -- All subsequent lookups, including crucially lookups during typechecking
274 -- the declaration itself, will find the fully-glorious Name
276 -- We handle ATs specially. They are not main declarations, but also not
277 -- implict things (in particular, adding them to `implicitTyThings' would mess
278 -- things up in the renaming/type checking of source programs).
279 -----------------------------------------------------
281 addDeclsToPTE :: PackageTypeEnv -> [(Name,TyThing)] -> PackageTypeEnv
282 addDeclsToPTE pte things = extendNameEnvList pte things
285 -> [(Version, IfaceDecl)]
286 -> IfL [(Name,TyThing)]
287 loadDecls ignore_prags ver_decls
288 = do { mod <- getIfModule
289 ; thingss <- mapM (loadDecl ignore_prags mod) ver_decls
290 ; return (concat thingss)
293 loadDecl :: Bool -- Don't load pragmas into the decl pool
295 -> (Version, IfaceDecl)
296 -> IfL [(Name,TyThing)] -- The list can be poked eagerly, but the
297 -- TyThings are forkM'd thunks
298 loadDecl ignore_prags mod (_version, decl)
299 = do { -- Populate the name cache with final versions of all
300 -- the names associated with the decl
301 main_name <- mk_new_bndr mod Nothing (ifName decl)
302 ; parent_name <- case ifFamily decl of -- make family the parent
303 Just famTyCon -> lookupIfaceTc famTyCon
304 _ -> return main_name
305 ; implicit_names <- mapM (mk_new_bndr mod (Just parent_name))
306 (ifaceDeclSubBndrs decl)
308 -- Typecheck the thing, lazily
309 -- NB. firstly, the laziness is there in case we never need the
310 -- declaration (in one-shot mode), and secondly it is there so that
311 -- we don't look up the occurrence of a name before calling mk_new_bndr
312 -- on the binder. This is important because we must get the right name
313 -- which includes its nameParent.
314 ; thing <- forkM doc (bumpDeclStats main_name >> tcIfaceDecl stripped_decl)
315 ; let mini_env = mkOccEnv [(getOccName t, t) | t <- implicitTyThings thing]
316 lookup n = case lookupOccEnv mini_env (getOccName n) of
319 pprPanic "loadDecl" (ppr main_name <+>
320 ppr n $$ ppr (stripped_decl))
322 ; returnM $ (main_name, thing) : [(n, lookup n) | n <- implicit_names]
324 -- We build a list from the *known* names, with (lookup n) thunks
325 -- as the TyThings. That way we can extend the PTE without poking the
328 stripped_decl | ignore_prags = discardDeclPrags decl
331 -- mk_new_bndr allocates in the name cache the final canonical
332 -- name for the thing, with the correct
335 -- imported name, to fix the module correctly in the cache
336 mk_new_bndr mod mb_parent occ
337 = newGlobalBinder mod occ mb_parent
338 (importedSrcLoc (showSDoc (ppr (moduleName mod))))
339 -- ToDo: qualify with the package name if necessary
341 ifFamily (IfaceData {
342 ifFamInst = Just (IfaceFamInst {ifFamInstTyCon = famTyCon})})
346 doc = ptext SLIT("Declaration for") <+> ppr (ifName decl)
348 discardDeclPrags :: IfaceDecl -> IfaceDecl
349 discardDeclPrags decl@(IfaceId {ifIdInfo = HasInfo _}) = decl { ifIdInfo = NoInfo }
350 discardDeclPrags decl = decl
352 bumpDeclStats :: Name -> IfL () -- Record that one more declaration has actually been used
354 = do { traceIf (text "Loading decl for" <+> ppr name)
355 ; updateEps_ (\eps -> let stats = eps_stats eps
356 in eps { eps_stats = stats { n_decls_out = n_decls_out stats + 1 } })
360 ifaceDeclSubBndrs :: IfaceDecl -> [OccName]
361 -- *Excludes* the 'main' name, but *includes* the implicitly-bound names
362 -- Deeply revolting, because it has to predict what gets bound,
363 -- especially the question of whether there's a wrapper for a datacon
365 -- If you change this, make sure you change HscTypes.implicitTyThings in sync
367 ifaceDeclSubBndrs (IfaceClass {ifCtxt = sc_ctxt, ifName = cls_occ,
368 ifSigs = sigs, ifATs = ats })
370 [tc_occ, dc_occ, dcww_occ] ++
371 [op | IfaceClassOp op _ _ <- sigs] ++
372 [ifName at | at <- ats ] ++
373 [mkSuperDictSelOcc n cls_occ | n <- [1..n_ctxt]]
375 n_ctxt = length sc_ctxt
377 tc_occ = mkClassTyConOcc cls_occ
378 dc_occ = mkClassDataConOcc cls_occ
379 co_occs | is_newtype = [mkNewTyCoOcc tc_occ]
381 dcww_occ -- | is_newtype = mkDataConWrapperOcc dc_occ -- Newtypes have wrapper but no worker
382 | otherwise = mkDataConWorkerOcc dc_occ -- Otherwise worker but no wrapper
383 is_newtype = n_sigs + n_ctxt == 1 -- Sigh
385 ifaceDeclSubBndrs IfaceData {ifCons = IfAbstractTyCon}
388 ifaceDeclSubBndrs (IfaceData {ifName = tc_occ,
389 ifCons = IfNewTyCon (
390 IfCon { ifConOcc = con_occ,
393 ifFamInst = famInst})
394 = fields ++ [con_occ, mkDataConWorkerOcc con_occ, mkNewTyCoOcc tc_occ]
395 ++ famInstCo famInst tc_occ
397 ifaceDeclSubBndrs (IfaceData {ifName = tc_occ,
398 ifCons = IfDataTyCon cons,
399 ifFamInst = famInst})
400 = nub (concatMap ifConFields cons) -- Eliminate duplicate fields
401 ++ concatMap dc_occs cons
402 ++ famInstCo famInst tc_occ
405 | has_wrapper = [con_occ, work_occ, wrap_occ]
406 | otherwise = [con_occ, work_occ]
408 con_occ = ifConOcc con_decl
409 strs = ifConStricts con_decl
410 wrap_occ = mkDataConWrapperOcc con_occ
411 work_occ = mkDataConWorkerOcc con_occ
412 has_wrapper = any isMarkedStrict strs -- See MkId.mkDataConIds (sigh)
413 || not (null . ifConEqSpec $ con_decl)
415 -- ToDo: may miss strictness in existential dicts
417 ifaceDeclSubBndrs _other = []
419 -- coercion for data/newtype family instances
420 famInstCo Nothing baseOcc = []
421 famInstCo (Just _) baseOcc = [mkInstTyCoOcc baseOcc]
425 %*********************************************************
427 \subsection{Reading an interface file}
429 %*********************************************************
432 findAndReadIface :: SDoc -> Module
433 -> IsBootInterface -- True <=> Look for a .hi-boot file
434 -- False <=> Look for .hi file
435 -> TcRnIf gbl lcl (MaybeErr Message (ModIface, FilePath))
436 -- Nothing <=> file not found, or unreadable, or illegible
437 -- Just x <=> successfully found and parsed
439 -- It *doesn't* add an error to the monad, because
440 -- sometimes it's ok to fail... see notes with loadInterface
442 findAndReadIface doc_str mod hi_boot_file
443 = do { traceIf (sep [hsep [ptext SLIT("Reading"),
445 then ptext SLIT("[boot]")
447 ptext SLIT("interface for"),
449 nest 4 (ptext SLIT("reason:") <+> doc_str)])
451 -- Check for GHC.Prim, and return its static interface
454 then returnM (Succeeded (ghcPrimIface,
455 "<built in interface for GHC.Prim>"))
459 ; hsc_env <- getTopEnv
460 ; mb_found <- ioToIOEnv (findHiFile hsc_env mod hi_boot_file)
463 { traceIf (ptext SLIT("...not found"))
465 ; returnM (Failed (cannotFindInterface dflags
466 (moduleName mod) err)) } ;
468 Succeeded file_path -> do
470 -- Found file, so read it
471 { traceIf (ptext SLIT("readIFace") <+> text file_path)
472 ; read_result <- readIface mod file_path hi_boot_file
473 ; case read_result of
474 Failed err -> returnM (Failed (badIfaceFile file_path err))
476 | mi_module iface /= mod ->
477 return (Failed (wrongIfaceModErr iface mod file_path))
479 returnM (Succeeded (iface, file_path))
480 -- Don't forget to fill in the package name...
483 findHiFile :: HscEnv -> Module -> IsBootInterface
484 -> IO (MaybeErr FindResult FilePath)
485 findHiFile hsc_env mod hi_boot_file
487 maybe_found <- findExactModule hsc_env mod
489 Found loc mod -> return (Succeeded path)
491 path = addBootSuffix_maybe hi_boot_file (ml_hi_file loc)
492 err -> return (Failed err)
495 @readIface@ tries just the one file.
498 readIface :: Module -> FilePath -> IsBootInterface
499 -> TcRnIf gbl lcl (MaybeErr Message ModIface)
500 -- Failed err <=> file not found, or unreadable, or illegible
501 -- Succeeded iface <=> successfully found and parsed
503 readIface wanted_mod file_path is_hi_boot_file
504 = do { dflags <- getDOpts
506 { res <- tryMost (readBinIface file_path)
509 | wanted_mod == actual_mod -> return (Succeeded iface)
510 | otherwise -> return (Failed err)
512 actual_mod = mi_module iface
513 err = hiModuleNameMismatchWarn wanted_mod actual_mod
515 Left exn -> return (Failed (text (showException exn)))
520 %*********************************************************
522 Wired-in interface for GHC.Prim
524 %*********************************************************
527 initExternalPackageState :: ExternalPackageState
528 initExternalPackageState
530 eps_is_boot = emptyUFM,
531 eps_PIT = emptyPackageIfaceTable,
532 eps_PTE = emptyTypeEnv,
533 eps_inst_env = emptyInstEnv,
534 eps_rule_base = mkRuleBase builtinRules,
535 -- Initialise the EPS rule pool with the built-in rules
536 eps_stats = EpsStats { n_ifaces_in = 0, n_decls_in = 0, n_decls_out = 0
537 , n_insts_in = 0, n_insts_out = 0
538 , n_rules_in = length builtinRules, n_rules_out = 0 }
543 %*********************************************************
545 Wired-in interface for GHC.Prim
547 %*********************************************************
550 ghcPrimIface :: ModIface
552 = (emptyModIface gHC_PRIM) {
553 mi_exports = [(gHC_PRIM, ghcPrimExports)],
555 mi_fixities = fixities,
556 mi_fix_fn = mkIfaceFixCache fixities
559 fixities = [(getOccName seqId, Fixity 0 InfixR)]
563 %*********************************************************
565 \subsection{Statistics}
567 %*********************************************************
570 ifaceStats :: ExternalPackageState -> SDoc
572 = hcat [text "Renamer stats: ", msg]
574 stats = eps_stats eps
576 [int (n_ifaces_in stats) <+> text "interfaces read",
577 hsep [ int (n_decls_out stats), text "type/class/variable imported, out of",
578 int (n_decls_in stats), text "read"],
579 hsep [ int (n_insts_out stats), text "instance decls imported, out of",
580 int (n_insts_in stats), text "read"],
581 hsep [ int (n_rules_out stats), text "rule decls imported, out of",
582 int (n_rules_in stats), text "read"]
587 %************************************************************************
591 %************************************************************************
594 showIface :: FilePath -> IO ()
595 -- Read binary interface, and print it out
596 showIface filename = do
597 -- skip the version check; we don't want to worry about profiled vs.
598 -- non-profiled interfaces, for example.
599 writeIORef v_IgnoreHiWay True
600 iface <- Binary.getBinFileWithDict filename
601 printDump (pprModIface iface)
607 pprModIface :: ModIface -> SDoc
610 = vcat [ ptext SLIT("interface")
611 <+> ppr (mi_module iface) <+> pp_boot
612 <+> ppr (mi_mod_vers iface) <+> pp_sub_vers
613 <+> (if mi_orphan iface then ptext SLIT("[orphan module]") else empty)
614 <+> int opt_HiVersion
615 <+> ptext SLIT("where")
616 , vcat (map pprExport (mi_exports iface))
617 , pprDeps (mi_deps iface)
618 , vcat (map pprUsage (mi_usages iface))
619 , pprFixities (mi_fixities iface)
620 , vcat (map pprIfaceDecl (mi_decls iface))
621 , vcat (map ppr (mi_insts iface))
622 , vcat (map ppr (mi_rules iface))
623 , pprDeprecs (mi_deprecs iface)
626 pp_boot | mi_boot iface = ptext SLIT("[boot]")
629 exp_vers = mi_exp_vers iface
630 rule_vers = mi_rule_vers iface
632 pp_sub_vers | exp_vers == initialVersion && rule_vers == initialVersion = empty
633 | otherwise = brackets (ppr exp_vers <+> ppr rule_vers)
636 When printing export lists, we print like this:
638 AvailTC C [C, x, y] C(x,y)
639 AvailTC C [x, y] C!(x,y) -- Exporting x, y but not C
642 pprExport :: IfaceExport -> SDoc
643 pprExport (mod, items)
644 = hsep [ ptext SLIT("export"), ppr mod, hsep (map pp_avail items) ]
646 pp_avail :: GenAvailInfo OccName -> SDoc
647 pp_avail (Avail occ) = ppr occ
648 pp_avail (AvailTC _ []) = empty
649 pp_avail (AvailTC n (n':ns))
650 | n==n' = ppr n <> pp_export ns
651 | otherwise = ppr n <> char '|' <> pp_export (n':ns)
654 pp_export names = braces (hsep (map ppr names))
656 pprUsage :: Usage -> SDoc
658 = hsep [ptext SLIT("import"), ppr (usg_name usage),
660 pp_export_version (usg_exports usage),
661 int (usg_rules usage),
662 pp_versions (usg_entities usage) ]
664 pp_versions nvs = hsep [ ppr n <+> int v | (n,v) <- nvs ]
665 pp_export_version Nothing = empty
666 pp_export_version (Just v) = int v
668 pprDeps :: Dependencies -> SDoc
669 pprDeps (Deps { dep_mods = mods, dep_pkgs = pkgs, dep_orphs = orphs})
670 = vcat [ptext SLIT("module dependencies:") <+> fsep (map ppr_mod mods),
671 ptext SLIT("package dependencies:") <+> fsep (map ppr pkgs),
672 ptext SLIT("orphans:") <+> fsep (map ppr orphs)
675 ppr_mod (mod_name, boot) = ppr mod_name <+> ppr_boot boot
676 ppr_boot True = text "[boot]"
677 ppr_boot False = empty
679 pprIfaceDecl :: (Version, IfaceDecl) -> SDoc
680 pprIfaceDecl (ver, decl)
681 = ppr_vers ver <+> ppr decl
683 -- Print the version for the decl
684 ppr_vers v | v == initialVersion = empty
687 pprFixities :: [(OccName, Fixity)] -> SDoc
688 pprFixities [] = empty
689 pprFixities fixes = ptext SLIT("fixities") <+> pprWithCommas pprFix fixes
691 pprFix (occ,fix) = ppr fix <+> ppr occ
693 pprDeprecs NoDeprecs = empty
694 pprDeprecs (DeprecAll txt) = ptext SLIT("Deprecate all") <+> doubleQuotes (ftext txt)
695 pprDeprecs (DeprecSome prs) = ptext SLIT("Deprecate") <+> vcat (map pprDeprec prs)
697 pprDeprec (name, txt) = ppr name <+> doubleQuotes (ftext txt)
701 %*********************************************************
705 %*********************************************************
708 badIfaceFile file err
709 = vcat [ptext SLIT("Bad interface file:") <+> text file,
712 hiModuleNameMismatchWarn :: Module -> Module -> Message
713 hiModuleNameMismatchWarn requested_mod read_mod =
714 withPprStyle defaultUserStyle $
715 -- we want the Modules below to be qualified with package names,
716 -- so reset the PrintUnqualified setting.
717 hsep [ ptext SLIT("Something is amiss; requested module ")
719 , ptext SLIT("differs from name found in the interface file")
723 wrongIfaceModErr iface mod_name file_path
724 = sep [ptext SLIT("Interface file") <+> iface_file,
725 ptext SLIT("contains module") <+> quotes (ppr (mi_module iface)) <> comma,
726 ptext SLIT("but we were expecting module") <+> quotes (ppr mod_name),
727 sep [ptext SLIT("Probable cause: the source code which generated"),
729 ptext SLIT("has an incompatible module name")
732 where iface_file = doubleQuotes (text file_path)