2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
4 \section{Dealing with interface files}
8 readIface, findAndReadIface, loadInterface, loadHomeInterface,
9 tryLoadInterface, loadOrphanModules,
10 loadExports, loadFixDecls, loadDeprecs,
17 #include "HsVersions.h"
19 import DriverState ( v_GhcMode, isCompManagerMode )
20 import DriverUtil ( splitFilename )
21 import CmdLineOpts ( opt_IgnoreIfacePragmas )
22 import Parser ( parseIface )
23 import HscTypes ( ModuleLocation(..),
24 ModIface(..), emptyModIface,
25 VersionInfo(..), ImportedModuleInfo,
26 lookupIfaceByModName, RdrExportItem,
27 ImportVersion, WhetherHasOrphans, IsBootInterface,
28 DeclsMap, GatedDecl, IfaceInsts, IfaceRules,
29 AvailInfo, GenAvailInfo(..), Avails, Deprecations(..)
31 import HsSyn ( TyClDecl(..), InstDecl(..), RuleDecl(..),
32 tyClDeclNames, tyClDeclSysNames, hsTyVarNames,
35 import RdrHsSyn ( RdrNameTyClDecl, RdrNameInstDecl, RdrNameRuleDecl )
36 import RnHsSyn ( extractHsTyNames_s )
37 import BasicTypes ( Version, defaultFixity )
38 import RnTypes ( rnHsType )
42 import PrelNames ( gHC_PRIM_Name, gHC_PRIM )
43 import Name ( Name {-instance NamedThing-},
44 nameModule, isInternalName, nameIsLocalOrFrom
49 import RdrName ( rdrNameOcc )
50 import SrcLoc ( mkSrcLoc )
51 import Maybes ( maybeToBool, orElse )
52 import StringBuffer ( hGetStringBuffer )
53 import FastString ( mkFastString )
54 import ErrUtils ( Message )
55 import Finder ( findModule, findPackageModule )
58 import ListSetOps ( minusList )
61 import BinIface ( {- just instances -} )
62 import qualified Binary
68 import Dynamic ( fromDynamic )
70 import List ( isSuffixOf )
74 %*********************************************************
76 \subsection{Loading a new interface file}
78 %*********************************************************
81 loadHomeInterface :: SDoc -> Name -> RnM d ModIface
82 loadHomeInterface doc_str name
83 = ASSERT2( not (isInternalName name), ppr name <+> parens doc_str )
84 loadInterface doc_str (moduleName (nameModule name)) ImportBySystem
86 loadOrphanModules :: [ModuleName] -> RnM d ()
87 loadOrphanModules mods
88 | null mods = returnRn ()
89 | otherwise = traceRn (text "Loading orphan modules:" <+>
90 fsep (map ppr mods)) `thenRn_`
91 mapRn_ load mods `thenRn_`
94 load mod = loadInterface (mk_doc mod) mod ImportBySystem
95 mk_doc mod = ppr mod <+> ptext SLIT("is a orphan-instance module")
97 loadInterface :: SDoc -> ModuleName -> WhereFrom -> RnM d ModIface
98 loadInterface doc mod from
99 = tryLoadInterface doc mod from `thenRn` \ (ifaces, maybe_err) ->
101 Nothing -> returnRn ifaces
102 Just err -> failWithRn ifaces (elaborate err)
104 elaborate err = hang (ptext SLIT("failed to load interface for") <+> quotes (ppr mod) <> colon)
107 tryLoadInterface :: SDoc -> ModuleName -> WhereFrom -> RnM d (ModIface, Maybe Message)
108 -- Returns (Just err) if an error happened
109 -- It *doesn't* add an error to the monad, because sometimes it's ok to fail...
110 -- Specifically, when we read the usage information from an interface file,
111 -- we try to read the interfaces it mentions. But it's OK to fail; perhaps
112 -- the module has changed, and that interface is no longer used.
114 -- tryLoadInterface guarantees to return with iImpModInfo m --> (..., True)
115 -- (If the load fails, we plug in a vanilla placeholder)
116 tryLoadInterface doc_str mod_name from
117 = getHomeIfaceTableRn `thenRn` \ hit ->
118 getModuleRn `thenRn` \ this_mod ->
119 getIfacesRn `thenRn` \ ifaces@(Ifaces { iPIT = pit }) ->
121 -- CHECK WHETHER WE HAVE IT ALREADY
122 case lookupIfaceByModName hit pit mod_name of {
123 Just iface | case from of
124 ImportByUser -> not (mi_boot iface)
125 ImportByUserSource -> mi_boot iface
126 ImportBySystem -> True
127 -> returnRn (iface, Nothing) ; -- Already loaded
128 -- The not (mi_boot iface) test checks that the already-loaded
129 -- interface isn't a boot iface. This can conceivably happen,
130 -- if the version checking happened to load a boot interface
131 -- before we got to real imports.
135 mod_map = iImpModInfo ifaces
136 mod_info = lookupFM mod_map mod_name
139 = case (from, mod_info) of
140 (ImportByUser, _) -> False -- Not hi-boot
141 (ImportByUserSource, _) -> True -- hi-boot
142 (ImportBySystem, Just (_, is_boot)) -> is_boot
143 (ImportBySystem, Nothing) -> False
144 -- We're importing a module we know absolutely
145 -- nothing about, so we assume it's from
146 -- another package, where we aren't doing
147 -- dependency tracking. So it won't be a hi-boot file.
149 redundant_source_import
150 = case (from, mod_info) of
151 (ImportByUserSource, Just (_,False)) -> True
155 -- Issue a warning for a redundant {- SOURCE -} import
156 -- NB that we arrange to read all the ordinary imports before
157 -- any of the {- SOURCE -} imports
158 warnCheckRn (not redundant_source_import)
159 (warnRedundantSourceImport mod_name) `thenRn_`
161 -- Check that we aren't importing ourselves.
162 -- That only happens in Rename.checkOldIface,
163 -- which doesn't call tryLoadInterface
165 (not (isHomeModule this_mod) || moduleName this_mod /= mod_name)
166 (warnSelfImport this_mod) `thenRn_`
168 -- READ THE MODULE IN
169 findAndReadIface doc_str mod_name hi_boot_file
170 `thenRn` \ read_result ->
171 case read_result of {
172 Left err -> -- Not found, so add an empty export env to the Ifaces map
173 -- so that we don't look again
175 fake_mod = mkVanillaModule mod_name
176 fake_iface = emptyModIface fake_mod
177 new_ifaces = ifaces { iPIT = extendModuleEnv pit fake_mod fake_iface }
179 setIfacesRn new_ifaces `thenRn_`
180 returnRn (fake_iface, Just err) ;
183 Right (mod, iface) ->
185 -- LOAD IT INTO Ifaces
187 -- NB: *first* we do loadDecl, so that the provenance of all the locally-defined
188 --- names is done correctly (notably, whether this is an .hi file or .hi-boot file).
189 -- If we do loadExport first the wrong info gets into the cache (unless we
190 -- explicitly tag each export which seems a bit of a bore)
193 -- Sanity check. If we're system-importing a module we know nothing at all
194 -- about, it should be from a different package to this one
195 WARN( not (maybeToBool mod_info) &&
196 case from of { ImportBySystem -> True; other -> False } &&
200 loadDecls mod (iDecls ifaces) (pi_decls iface) `thenRn` \ (decls_vers, new_decls) ->
201 loadRules mod (iRules ifaces) (pi_rules iface) `thenRn` \ (rule_vers, new_rules) ->
202 loadInstDecls mod (iInsts ifaces) (pi_insts iface) `thenRn` \ new_insts ->
203 loadExports (pi_exports iface) `thenRn` \ (export_vers, avails) ->
204 loadFixDecls mod (pi_fixity iface) `thenRn` \ fix_env ->
205 loadDeprecs mod (pi_deprecs iface) `thenRn` \ deprec_env ->
207 version = VersionInfo { vers_module = pi_vers iface,
208 vers_exports = export_vers,
209 vers_rules = rule_vers,
210 vers_decls = decls_vers }
212 -- For an explicit user import, add to mod_map info about
213 -- the things the imported module depends on, extracted
214 -- from its usage info; and delete the module itself, which is now in the PIT
215 mod_map1 = case from of
216 ImportByUser -> addModDeps mod is_loaded (pi_usages iface) mod_map
218 mod_map2 = delFromFM mod_map1 mod_name
220 this_mod_name = moduleName this_mod
221 is_loaded m = m == this_mod_name
222 || maybeToBool (lookupIfaceByModName hit pit m)
223 -- We treat the currently-being-compiled module as 'loaded' because
224 -- even though it isn't yet in the HIT or PIT; otherwise it gets
225 -- put into iImpModInfo, and then spat out into its own interface
226 -- file as a dependency
228 -- Now add info about this module to the PIT
229 has_orphans = pi_orphan iface
230 new_pit = extendModuleEnv pit mod mod_iface
231 mod_iface = ModIface { mi_module = mod, mi_package = pi_pkg iface,
232 mi_version = version,
233 mi_orphan = has_orphans, mi_boot = hi_boot_file,
235 mi_fixities = fix_env, mi_deprecs = deprec_env,
236 mi_usages = [], -- Will be filled in later
237 mi_decls = panic "No mi_decls in PIT",
241 new_ifaces = ifaces { iPIT = new_pit,
245 iImpModInfo = mod_map2 }
247 setIfacesRn new_ifaces `thenRn_`
248 returnRn (mod_iface, Nothing)
251 -----------------------------------------------------
252 -- Adding module dependencies from the
253 -- import decls in the interface file
254 -----------------------------------------------------
257 -> (ModuleName -> Bool) -- True for modules that are already loaded
259 -> ImportedModuleInfo -> ImportedModuleInfo
260 -- (addModDeps M ivs deps)
261 -- We are importing module M, and M.hi contains 'import' decls given by ivs
262 addModDeps mod is_loaded new_deps mod_deps
263 = foldr add mod_deps filtered_new_deps
265 -- Don't record dependencies when importing a module from another package
266 -- Except for its descendents which contain orphans,
267 -- and in that case, forget about the boot indicator
268 filtered_new_deps :: [(ModuleName, (WhetherHasOrphans, IsBootInterface))]
270 | isHomeModule mod = [ (imp_mod, (has_orphans, is_boot))
271 | (imp_mod, has_orphans, is_boot, _) <- new_deps,
272 not (is_loaded imp_mod)
274 | otherwise = [ (imp_mod, (True, False))
275 | (imp_mod, has_orphans, _, _) <- new_deps,
276 not (is_loaded imp_mod) && has_orphans
278 add (imp_mod, dep) deps = addToFM_C combine deps imp_mod dep
280 combine old@(old_has_orphans, old_is_boot) new@(new_has_orphans, new_is_boot)
281 | old_is_boot = new -- Record the best is_boot info
284 -----------------------------------------------------
285 -- Loading the export list
286 -----------------------------------------------------
288 loadExports :: (Version, [RdrExportItem]) -> RnM d (Version, [(ModuleName,Avails)])
289 loadExports (vers, items)
290 = mapRn loadExport items `thenRn` \ avails_s ->
291 returnRn (vers, avails_s)
294 loadExport :: RdrExportItem -> RnM d (ModuleName, Avails)
295 loadExport (mod, entities)
296 = mapRn (load_entity mod) entities `thenRn` \ avails ->
297 returnRn (mod, avails)
299 load_entity mod (Avail occ)
300 = newGlobalName mod occ `thenRn` \ name ->
301 returnRn (Avail name)
302 load_entity mod (AvailTC occ occs)
303 = newGlobalName mod occ `thenRn` \ name ->
304 mapRn (newGlobalName mod) occs `thenRn` \ names ->
305 returnRn (AvailTC name names)
308 -----------------------------------------------------
309 -- Loading type/class/value decls
310 -----------------------------------------------------
314 -> [(Version, RdrNameTyClDecl)]
315 -> RnM d (NameEnv Version, DeclsMap)
316 loadDecls mod (decls_map, n_slurped) decls
317 = foldlRn (loadDecl mod) (emptyNameEnv, decls_map) decls `thenRn` \ (vers, decls_map') ->
318 returnRn (vers, (decls_map', n_slurped))
320 loadDecl mod (version_map, decls_map) (version, decl)
321 = getTyClDeclBinders mod decl `thenRn` \ (avail, sys_names) ->
323 full_avail = case avail of
325 AvailTC n ns -> AvailTC n (sys_names ++ ns)
326 main_name = availName full_avail
327 new_decls_map = extendNameEnvList decls_map stuff
328 stuff = [ (name, (full_avail, name==main_name, (mod, decl)))
329 | name <- availNames full_avail]
331 new_version_map = extendNameEnv version_map main_name version
333 traceRn (text "Loading" <+> ppr full_avail) `thenRn_`
334 returnRn (new_version_map, new_decls_map)
336 -----------------------------------------------------
337 -- Loading fixity decls
338 -----------------------------------------------------
340 loadFixDecls mod decls
341 = mapRn (loadFixDecl mod_name) decls `thenRn` \ to_add ->
342 returnRn (mkNameEnv to_add)
344 mod_name = moduleName mod
346 loadFixDecl mod_name (rdr_name, fixity)
347 = newGlobalName mod_name (rdrNameOcc rdr_name) `thenRn` \ name ->
348 returnRn (name, fixity)
351 -----------------------------------------------------
352 -- Loading instance decls
353 -----------------------------------------------------
355 loadInstDecls :: Module
359 loadInstDecls mod (insts, n_slurped) decls
361 foldlRn (loadInstDecl mod) insts decls `thenRn` \ insts' ->
362 returnRn (insts', n_slurped)
365 loadInstDecl mod insts decl@(InstDecl inst_ty _ _ _ _)
366 = -- Find out what type constructors and classes are "gates" for the
367 -- instance declaration. If all these "gates" are slurped in then
368 -- we should slurp the instance decl too.
370 -- We *don't* want to count names in the context part as gates, though.
372 -- instance Foo a => Baz (T a) where ...
374 -- Here the gates are Baz and T, but *not* Foo.
376 -- HOWEVER: functional dependencies make things more complicated
377 -- class C a b | a->b where ...
378 -- instance C Foo Baz where ...
379 -- Here, the gates are really only C and Foo, *not* Baz.
380 -- That is, if C and Foo are visible, even if Baz isn't, we must
383 -- Rather than take fundeps into account "properly", we just slurp
384 -- if C is visible and *any one* of the Names in the types
385 -- This is a slightly brutal approximation, but most instance decls
386 -- are regular H98 ones and it's perfect for them.
388 -- NOTICE that we rename the type before extracting its free
389 -- variables. The free-variable finder for a renamed HsType
390 -- does the Right Thing for built-in syntax like [] and (,).
392 rnHsType (text "In an interface instance decl") inst_ty
393 ) `thenRn` \ inst_ty' ->
395 (tvs,(cls,tys)) = getHsInstHead inst_ty'
396 free_tcs = nameSetToList (extractHsTyNames_s tys) `minusList` hsTyVarNames tvs
398 gate_fn vis_fn = vis_fn cls && (null free_tcs || any vis_fn free_tcs)
399 -- Here is the implementation of HOWEVER above
400 -- (Note that we do let the inst decl in if it mentions
401 -- no tycons at all. Hence the null free_ty_names.)
403 returnRn ((gate_fn, (mod, decl)) `consBag` insts)
407 -----------------------------------------------------
409 -----------------------------------------------------
411 loadRules :: Module -> IfaceRules
412 -> (Version, [RdrNameRuleDecl])
413 -> RnM d (Version, IfaceRules)
414 loadRules mod (rule_bag, n_slurped) (version, rules)
415 | null rules || opt_IgnoreIfacePragmas
416 = returnRn (version, (rule_bag, n_slurped))
419 mapRn (loadRule mod) rules `thenRn` \ new_rules ->
420 returnRn (version, (rule_bag `unionBags` listToBag new_rules, n_slurped))
422 loadRule :: Module -> RdrNameRuleDecl -> RnM d (GatedDecl RdrNameRuleDecl)
423 -- "Gate" the rule simply by whether the rule variable is
424 -- needed. We can refine this later.
425 loadRule mod decl@(IfaceRule _ _ _ var _ _ src_loc)
426 = lookupIfaceName var `thenRn` \ var_name ->
427 returnRn (\vis_fn -> vis_fn var_name, (mod, decl))
430 -----------------------------------------------------
431 -- Loading Deprecations
432 -----------------------------------------------------
434 loadDeprecs :: Module -> IfaceDeprecs -> RnM d Deprecations
435 loadDeprecs m Nothing = returnRn NoDeprecs
436 loadDeprecs m (Just (Left txt)) = returnRn (DeprecAll txt)
437 loadDeprecs m (Just (Right prs)) = setModuleRn m $
438 foldlRn loadDeprec emptyNameEnv prs `thenRn` \ env ->
439 returnRn (DeprecSome env)
440 loadDeprec deprec_env (n, txt)
441 = lookupIfaceName n `thenRn` \ name ->
442 traceRn (text "Loaded deprecation(s) for" <+> ppr name <> colon <+> ppr txt) `thenRn_`
443 returnRn (extendNameEnv deprec_env name (name,txt))
447 %*********************************************************
449 \subsection{Getting binders out of a declaration}
451 %*********************************************************
453 @getDeclBinders@ returns the names for a @RdrNameHsDecl@.
454 It's used for both source code (from @availsFromDecl@) and interface files
457 It doesn't deal with source-code specific things: @ValD@, @DefD@. They
458 are handled by the sourc-code specific stuff in @RnNames@.
460 *** See "THE NAMING STORY" in HsDecls ****
467 -> RnM d (AvailInfo, [Name]) -- The [Name] are the system names
470 getTyClDeclBinders mod (IfaceSig {tcdName = var, tcdLoc = src_loc})
471 = newTopBinder mod var src_loc `thenRn` \ var_name ->
472 returnRn (Avail var_name, [])
474 getTyClDeclBinders mod tycl_decl
475 = new_top_bndrs mod (tyClDeclNames tycl_decl) `thenRn` \ names@(main_name:_) ->
476 new_top_bndrs mod (tyClDeclSysNames tycl_decl) `thenRn` \ sys_names ->
477 returnRn (AvailTC main_name names, sys_names)
480 new_top_bndrs mod names_w_locs
481 = sequenceRn [newTopBinder mod name loc | (name,loc) <- names_w_locs]
485 %*********************************************************
487 \subsection{Reading an interface file}
489 %*********************************************************
492 findAndReadIface :: SDoc -> ModuleName
493 -> IsBootInterface -- True <=> Look for a .hi-boot file
494 -- False <=> Look for .hi file
495 -> RnM d (Either Message (Module, ParsedIface))
496 -- Nothing <=> file not found, or unreadable, or illegible
497 -- Just x <=> successfully found and parsed
499 findAndReadIface doc_str mod_name hi_boot_file
500 = traceRn trace_msg `thenRn_`
502 -- Check for GHC.Prim, and return its static interface
503 if mod_name == gHC_PRIM_Name
504 then returnRn (Right (gHC_PRIM, ghcPrimIface))
507 -- In interactive or --make mode, we are *not allowed* to demand-load
508 -- a home package .hi file. So don't even look for them.
509 -- This helps in the case where you are sitting in eg. ghc/lib/std
510 -- and start up GHCi - it won't complain that all the modules it tries
511 -- to load are found in the home location.
512 ioToRnM_no_fail (readIORef v_GhcMode) `thenRn` \ mode ->
513 let home_allowed = hi_boot_file || not (isCompManagerMode mode)
516 ioToRnM (if home_allowed
517 then findModule mod_name
518 else findPackageModule mod_name) `thenRn` \ maybe_found ->
522 Right (Just (wanted_mod,locn))
523 -> mkHiPath hi_boot_file locn `thenRn` \ file ->
524 readIface file `thenRn` \ read_result ->
526 Left bad -> returnRn (Left bad)
527 Right iface -> -- check that the module names agree
528 let read_mod_name = pi_mod iface
529 wanted_mod_name = moduleName wanted_mod
532 (wanted_mod_name == read_mod_name)
533 (hiModuleNameMismatchWarn wanted_mod_name read_mod_name)
535 returnRn (Right (wanted_mod, iface))
537 other -> traceRn (ptext SLIT("...not found")) `thenRn_`
538 returnRn (Left (noIfaceErr mod_name hi_boot_file))
541 trace_msg = sep [hsep [ptext SLIT("Reading"),
542 if hi_boot_file then ptext SLIT("[boot]") else empty,
543 ptext SLIT("interface for"),
544 ppr mod_name <> semi],
545 nest 4 (ptext SLIT("reason:") <+> doc_str)]
547 mkHiPath hi_boot_file locn
549 ioToRnM_no_fail (doesFileExist hi_boot_ver_path) `thenRn` \ b ->
550 if b then returnRn hi_boot_ver_path
551 else returnRn hi_boot_path
552 | otherwise = returnRn hi_path
553 where hi_path = ml_hi_file locn
554 (hi_base, _hi_suf) = splitFilename hi_path
555 hi_boot_path = hi_base ++ ".hi-boot"
556 hi_boot_ver_path = hi_base ++ ".hi-boot-" ++ cHscIfaceFileVersion
559 @readIface@ tries just the one file.
562 readIface :: String -> RnM d (Either Message ParsedIface)
563 -- Nothing <=> file not found, or unreadable, or illegible
564 -- Just x <=> successfully found and parsed
566 = --ioToRnM (putStrLn ("reading iface " ++ file_path)) `thenRn_`
567 traceRn (ptext SLIT("readIFace") <+> text file_path) `thenRn_`
569 let hi_boot_ver = "hi-boot-" ++ cHscIfaceFileVersion in
570 if ".hi-boot" `isSuffixOf` file_path
571 || hi_boot_ver `isSuffixOf` file_path then
573 ioToRnM (hGetStringBuffer False file_path) `thenRn` \ read_result ->
574 case read_result of {
575 Left io_error -> bale_out (text (show io_error));
578 case parseIface contents (mkPState loc exts) of {
579 POk _ iface -> returnRn (Right iface);
580 PFailed err -> bale_out err
584 ioToRnM_no_fail (myTry (Binary.getBinFileWithDict file_path))
585 `thenRn` \ either_iface ->
588 Right iface -> returnRn (Right iface)
589 Left (DynException d) | Just e <- fromDynamic d
590 -> bale_out (text (show (e :: GhcException)))
592 Left err -> bale_out (text (show err))
595 exts = ExtFlags {glasgowExtsEF = True,
597 loc = mkSrcLoc (mkFastString file_path) 1
599 bale_out err = returnRn (Left (badIfaceFile file_path err))
601 #if __GLASGOW_HASKELL__ < 501
602 myTry = Exception.tryAllIO
604 myTry = Exception.try
608 %*********************************************************
610 \subsection{Looking up fixities}
612 %*********************************************************
614 @lookupFixityRn@ has to be in RnIfaces (or RnHiFiles), instead of
615 its obvious home in RnEnv, because it calls @loadHomeInterface@.
617 lookupFixity is a bit strange.
619 * Nested local fixity decls are put in the local fixity env, which we
620 find with getFixtyEnv
622 * Imported fixities are found in the HIT or PIT
624 * Top-level fixity decls in this module may be for Names that are
625 either Global (constructors, class operations)
626 or Local/Exported (everything else)
627 (See notes with RnNames.getLocalDeclBinders for why we have this split.)
628 We put them all in the local fixity environment
631 lookupFixityRn :: Name -> RnMS Fixity
633 = getModuleRn `thenRn` \ this_mod ->
634 if nameIsLocalOrFrom this_mod name
635 then -- It's defined in this module
636 getFixityEnv `thenRn` \ local_fix_env ->
637 returnRn (lookupLocalFixity local_fix_env name)
639 else -- It's imported
640 -- For imported names, we have to get their fixities by doing a
641 -- loadHomeInterface, and consulting the Ifaces that comes back
642 -- from that, because the interface file for the Name might not
643 -- have been loaded yet. Why not? Suppose you import module A,
644 -- which exports a function 'f', thus;
645 -- module CurrentModule where
647 -- module A( f ) where
649 -- Then B isn't loaded right away (after all, it's possible that
650 -- nothing from B will be used). When we come across a use of
651 -- 'f', we need to know its fixity, and it's then, and only
652 -- then, that we load B.hi. That is what's happening here.
653 loadHomeInterface doc name `thenRn` \ iface ->
654 returnRn (lookupNameEnv (mi_fixities iface) name `orElse` defaultFixity)
656 doc = ptext SLIT("Checking fixity for") <+> ppr name
660 %*********************************************************
664 %*********************************************************
667 noIfaceErr mod_name boot_file
668 = ptext SLIT("Could not find interface file for") <+> quotes (ppr mod_name)
669 -- We used to print the search path, but we can't do that
670 -- now, because it's hidden inside the finder.
671 -- Maybe the finder should expose more functions.
673 badIfaceFile file err
674 = vcat [ptext SLIT("Bad interface file:") <+> text file,
677 hiModuleNameMismatchWarn :: ModuleName -> ModuleName -> Message
678 hiModuleNameMismatchWarn requested_mod read_mod =
679 hsep [ ptext SLIT("Something is amiss; requested module name")
681 , ptext SLIT("differs from name found in the interface file")
685 warnRedundantSourceImport mod_name
686 = ptext SLIT("Unnecessary {- SOURCE -} in the import of module")
687 <+> quotes (ppr mod_name)
690 = ptext SLIT("Importing my own interface: module") <+> ppr mod