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Commit 3f13c20e authored by Edward Z. Yang's avatar Edward Z. Yang
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Revert "Revert "Revert "Support for multiple signature files in scope.""" 

This reverts commit 214596de.
parent c234acbe
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Showing with 139 additions and 582 deletions
compiler/deSugar/DsMonad.hs
View file @ 3f13c20e
......@@ -184,7 +184,7 @@ initDs hsc_env mod rdr_env type_env fam_inst_env thing_inside
else do {
; result <- liftIO $ findImportedModule hsc_env modname Nothing
; case result of
FoundModule h -> loadModule err (fr_mod h)
Found _ mod -> loadModule err mod
_ -> pprPgmError "Unable to use Data Parallel Haskell (DPH):" err
} }
......
compiler/ghci/Linker.hs
View file @ 3f13c20e
......@@ -562,29 +562,23 @@ getLinkDeps hsc_env hpt pls replace_osuf span mods
-- 3. For each dependent module, find its linkable
-- This will either be in the HPT or (in the case of one-shot
-- compilation) we may need to use maybe_getFileLinkable.
-- If the module is actually a signature, there won't be a
-- linkable (thus catMaybes)
-- compilation) we may need to use maybe_getFileLinkable
; let { osuf = objectSuf dflags }
; lnks_needed <- fmap Maybes.catMaybes
$ mapM (get_linkable osuf) mods_needed
; lnks_needed <- mapM (get_linkable osuf) mods_needed
; return (lnks_needed, pkgs_needed) }
where
dflags = hsc_dflags hsc_env
this_pkg = thisPackage dflags
-- | Given a list of modules @mods@, recursively discover all external
-- package and local module (according to @this_pkg@) dependencies.
--
-- The 'ModIface' contains the transitive closure of the module dependencies
-- within the current package, *except* for boot modules: if we encounter
-- a boot module, we have to find its real interface and discover the
-- dependencies of that. Hence we need to traverse the dependency
-- tree recursively. See bug #936, testcase ghci/prog007.
follow_deps :: [Module] -- modules to follow
-> UniqSet ModuleName -- accum. module dependencies
-> UniqSet PackageKey -- accum. package dependencies
-- The ModIface contains the transitive closure of the module dependencies
-- within the current package, *except* for boot modules: if we encounter
-- a boot module, we have to find its real interface and discover the
-- dependencies of that. Hence we need to traverse the dependency
-- tree recursively. See bug #936, testcase ghci/prog007.
follow_deps :: [Module] -- modules to follow
-> UniqSet ModuleName -- accum. module dependencies
-> UniqSet PackageKey -- accum. package dependencies
-> IO ([ModuleName], [PackageKey]) -- result
follow_deps [] acc_mods acc_pkgs
= return (uniqSetToList acc_mods, uniqSetToList acc_pkgs)
......@@ -607,7 +601,6 @@ getLinkDeps hsc_env hpt pls replace_osuf span mods
where is_boot (m,True) = Left m
is_boot (m,False) = Right m
-- Boot module dependencies which must be processed recursively
boot_deps' = filter (not . (`elementOfUniqSet` acc_mods)) boot_deps
acc_mods' = addListToUniqSet acc_mods (moduleName mod : mod_deps)
acc_pkgs' = addListToUniqSet acc_pkgs $ map fst pkg_deps
......@@ -638,37 +631,30 @@ getLinkDeps hsc_env hpt pls replace_osuf span mods
get_linkable osuf mod_name -- A home-package module
| Just mod_info <- lookupUFM hpt mod_name
= adjust_linkable (hm_iface mod_info)
(Maybes.expectJust "getLinkDeps" (hm_linkable mod_info))
= adjust_linkable (Maybes.expectJust "getLinkDeps" (hm_linkable mod_info))
| otherwise
= do -- It's not in the HPT because we are in one shot mode,
-- so use the Finder to get a ModLocation...
-- ezyang: I don't actually know how to trigger this codepath,
-- seeing as this is GHCi logic. Template Haskell, maybe?
mb_stuff <- findHomeModule hsc_env mod_name
case mb_stuff of
FoundExact loc mod -> found loc mod
Found loc mod -> found loc mod
_ -> no_obj mod_name
where
found loc mod = do {
-- ...and then find the linkable for it
mb_lnk <- findObjectLinkableMaybe mod loc ;
iface <- initIfaceCheck hsc_env $
loadUserInterface False (text "getLinkDeps2") mod ;
case mb_lnk of {
Nothing -> no_obj mod ;
Just lnk -> adjust_linkable iface lnk
Just lnk -> adjust_linkable lnk
}}
adjust_linkable iface lnk
-- Signatures have no linkables! Don't return one.
| mi_hsc_src iface == HsigFile = return Nothing
adjust_linkable lnk
| Just new_osuf <- replace_osuf = do
new_uls <- mapM (adjust_ul new_osuf)
(linkableUnlinked lnk)
return (Just lnk{ linkableUnlinked=new_uls })
return lnk{ linkableUnlinked=new_uls }
| otherwise =
return (Just lnk)
return lnk
adjust_ul new_osuf (DotO file) = do
MASSERT(osuf `isSuffixOf` file)
......
compiler/iface/LoadIface.hs
View file @ 3f13c20e
......@@ -298,17 +298,12 @@ loadSrcInterface_maybe doc mod want_boot maybe_pkg
-- interface; it will call the Finder again, but the ModLocation will be
-- cached from the first search.
= do { hsc_env <- getTopEnv
-- ToDo: findImportedModule should return a list of interfaces
; res <- liftIO $ findImportedModule hsc_env mod maybe_pkg
; case res of
FoundModule (FoundHs { fr_mod = mod })
-> fmap (fmap (:[]))
. initIfaceTcRn
$ loadInterface doc mod (ImportByUser want_boot)
FoundSigs mods _backing
-> initIfaceTcRn $ do
ms <- forM mods $ \(FoundHs { fr_mod = mod }) ->
loadInterface doc mod (ImportByUser want_boot)
return (sequence ms)
Found _ mod -> fmap (fmap (:[]))
. initIfaceTcRn
$ loadInterface doc mod (ImportByUser want_boot)
err -> return (Failed (cannotFindInterface (hsc_dflags hsc_env) mod err)) }
-- | Load interface directly for a fully qualified 'Module'. (This is a fairly
......@@ -746,7 +741,7 @@ findAndReadIface doc_str mod hi_boot_file
hsc_env <- getTopEnv
mb_found <- liftIO (findExactModule hsc_env mod)
case mb_found of
FoundExact loc mod -> do
Found loc mod -> do
-- Found file, so read it
let file_path = addBootSuffix_maybe hi_boot_file
......@@ -763,8 +758,7 @@ findAndReadIface doc_str mod hi_boot_file
traceIf (ptext (sLit "...not found"))
dflags <- getDynFlags
return (Failed (cannotFindInterface dflags
(moduleName mod)
(convFindExactResult err)))
(moduleName mod) err))
where read_file file_path = do
traceIf (ptext (sLit "readIFace") <+> text file_path)
read_result <- readIface mod file_path
......
compiler/iface/MkIface.hs
View file @ 3f13c20e
......@@ -1334,20 +1334,9 @@ checkDependencies hsc_env summary iface
find_res <- liftIO $ findImportedModule hsc_env mod (fmap sl_fs pkg)
let reason = moduleNameString mod ++ " changed"
case find_res of
FoundModule h -> check_mod reason (fr_mod h)
FoundSigs hs _backing -> check_mods reason (map fr_mod hs)
_otherwise -> return (RecompBecause reason)
check_mods _ [] = return UpToDate
check_mods reason (m:ms) = do
r <- check_mod reason m
case r of
UpToDate -> check_mods reason ms
_otherwise -> return r
check_mod reason mod
Found _ mod
| pkg == this_pkg
= if moduleName mod `notElem` map fst prev_dep_mods
-> if moduleName mod `notElem` map fst prev_dep_mods
then do traceHiDiffs $
text "imported module " <> quotes (ppr mod) <>
text " not among previous dependencies"
......@@ -1355,7 +1344,7 @@ checkDependencies hsc_env summary iface
else
return UpToDate
| otherwise
= if pkg `notElem` (map fst prev_dep_pkgs)
-> if pkg `notElem` (map fst prev_dep_pkgs)
then do traceHiDiffs $
text "imported module " <> quotes (ppr mod) <>
text " is from package " <> quotes (ppr pkg) <>
......@@ -1364,6 +1353,7 @@ checkDependencies hsc_env summary iface
else
return UpToDate
where pkg = modulePackageKey mod
_otherwise -> return (RecompBecause reason)
needInterface :: Module -> (ModIface -> IfG RecompileRequired)
-> IfG RecompileRequired
......
compiler/main/DriverMkDepend.hs
View file @ 3f13c20e
......@@ -249,7 +249,7 @@ findDependency hsc_env srcloc pkg imp is_boot include_pkg_deps
-- we've done it once during downsweep
r <- findImportedModule hsc_env imp pkg
; case r of
FoundModule (FoundHs { fr_loc = loc })
Found loc _
-- Home package: just depend on the .hi or hi-boot file
| isJust (ml_hs_file loc) || include_pkg_deps
-> return (Just (addBootSuffix_maybe is_boot (ml_hi_file loc)))
......@@ -258,9 +258,6 @@ findDependency hsc_env srcloc pkg imp is_boot include_pkg_deps
| otherwise
-> return Nothing
-- TODO: FoundSignature. For now, we assume home package
-- "signature" dependencies look like FoundModule.
fail ->
let dflags = hsc_dflags hsc_env
in throwOneError $ mkPlainErrMsg dflags srcloc $
......
compiler/main/DynamicLoading.hs
View file @ 3f13c20e
......@@ -203,15 +203,7 @@ lookupRdrNameInModuleForPlugins hsc_env mod_name rdr_name = do
-- First find the package the module resides in by searching exposed packages and home modules
found_module <- findImportedModule hsc_env mod_name Nothing
case found_module of
FoundModule h -> check_mod (fr_mod h)
FoundSigs hs _backing -> check_mods (map fr_mod hs) -- (not tested)
err -> throwCmdLineErrorS dflags $ cannotFindModule dflags mod_name err
where
dflags = hsc_dflags hsc_env
meth = "lookupRdrNameInModule"
doc = ptext (sLit $ "contains a name used in an invocation of " ++ meth)
check_mod mod = do
Found _ mod -> do
-- Find the exports of the module
(_, mb_iface) <- initTcInteractive hsc_env $
initIfaceTcRn $
......@@ -229,13 +221,10 @@ lookupRdrNameInModuleForPlugins hsc_env mod_name rdr_name = do
_ -> panic "lookupRdrNameInModule"
Nothing -> throwCmdLineErrorS dflags $ hsep [ptext (sLit "Could not determine the exports of the module"), ppr mod_name]
check_mods [] = return Nothing
check_mods (m:ms) = do
r <- check_mod m
case r of
Nothing -> check_mods ms
Just _ -> return r
err -> throwCmdLineErrorS dflags $ cannotFindModule dflags mod_name err
where
dflags = hsc_dflags hsc_env
doc = ptext (sLit "contains a name used in an invocation of lookupRdrNameInModule")
wrongTyThingError :: Name -> TyThing -> SDoc
wrongTyThingError name got_thing = hsep [ptext (sLit "The name"), ppr name, ptext (sLit "is not that of a value but rather a"), pprTyThingCategory got_thing]
......
compiler/main/Finder.hs
View file @ 3f13c20e
......@@ -9,7 +9,6 @@
module Finder (
flushFinderCaches,
FindResult(..),
convFindExactResult, -- move to HscTypes?
findImportedModule,
findExactModule,
findHomeModule,
......@@ -46,7 +45,8 @@ import System.Directory
import System.FilePath
import Control.Monad
import Data.Time
import Data.List ( foldl', partition )
import Data.List ( foldl' )
type FileExt = String -- Filename extension
type BaseName = String -- Basename of file
......@@ -75,7 +75,7 @@ flushFinderCaches hsc_env =
is_ext mod _ | modulePackageKey mod /= this_pkg = True
| otherwise = False
addToFinderCache :: IORef FinderCache -> Module -> FindExactResult -> IO ()
addToFinderCache :: IORef FinderCache -> Module -> FindResult -> IO ()
addToFinderCache ref key val =
atomicModifyIORef' ref $ \c -> (extendModuleEnv c key val, ())
......@@ -83,7 +83,7 @@ removeFromFinderCache :: IORef FinderCache -> Module -> IO ()
removeFromFinderCache ref key =
atomicModifyIORef' ref $ \c -> (delModuleEnv c key, ())
lookupFinderCache :: IORef FinderCache -> Module -> IO (Maybe FindExactResult)
lookupFinderCache :: IORef FinderCache -> Module -> IO (Maybe FindResult)
lookupFinderCache ref key = do
c <- readIORef ref
return $! lookupModuleEnv c key
......@@ -104,7 +104,7 @@ findImportedModule hsc_env mod_name mb_pkg =
Just pkg | pkg == fsLit "this" -> home_import -- "this" is special
| otherwise -> pkg_import
where
home_import = convFindExactResult `fmap` findHomeModule hsc_env mod_name
home_import = findHomeModule hsc_env mod_name
pkg_import = findExposedPackageModule hsc_env mod_name mb_pkg
......@@ -118,7 +118,7 @@ findImportedModule hsc_env mod_name mb_pkg =
-- reading the interface for a module mentioned by another interface,
-- for example (a "system import").
findExactModule :: HscEnv -> Module -> IO FindExactResult
findExactModule :: HscEnv -> Module -> IO FindResult
findExactModule hsc_env mod =
let dflags = hsc_dflags hsc_env
in if modulePackageKey mod == thisPackage dflags
......@@ -152,45 +152,17 @@ orIfNotFound this or_this = do
-- been done. Otherwise, do the lookup (with the IO action) and save
-- the result in the finder cache and the module location cache (if it
-- was successful.)
homeSearchCache :: HscEnv
-> ModuleName
-> IO FindExactResult
-> IO FindExactResult
homeSearchCache :: HscEnv -> ModuleName -> IO FindResult -> IO FindResult
homeSearchCache hsc_env mod_name do_this = do
let mod = mkModule (thisPackage (hsc_dflags hsc_env)) mod_name
modLocationCache hsc_env mod do_this
-- | Converts a 'FindExactResult' into a 'FindResult' in the obvious way.
convFindExactResult :: FindExactResult -> FindResult
convFindExactResult (FoundExact loc m) = FoundModule (FoundHs loc m)
convFindExactResult (NoPackageExact pk) = NoPackage pk
convFindExactResult NotFoundExact { fer_paths = paths, fer_pkg = pkg } =
NotFound {
fr_paths = paths, fr_pkg = pkg,
fr_pkgs_hidden = [], fr_mods_hidden = [], fr_suggestions = []
}
foundExact :: FindExactResult -> Bool
foundExact FoundExact{} = True
foundExact _ = False
findExposedPackageModule :: HscEnv -> ModuleName -> Maybe FastString
-> IO FindResult
findExposedPackageModule hsc_env mod_name mb_pkg
= case lookupModuleWithSuggestions (hsc_dflags hsc_env) mod_name mb_pkg of
LookupFound (m, _) -> do
fmap convFindExactResult (findPackageModule hsc_env m)
LookupFoundSigs ms backing -> do
locs <- mapM (findPackageModule hsc_env . fst) ms
let (ok, missing) = partition foundExact locs
case missing of
-- At the moment, we return the errors one at a time. It might be
-- better if we collected them up and reported them all, but
-- FindResult doesn't have enough information to support this.
-- In any case, this REALLY shouldn't happen (it means there are
-- broken packages in the database.)
(m:_) -> return (convFindExactResult m)
_ -> return (FoundSigs [FoundHs l m | FoundExact l m <- ok] backing)
LookupFound m pkg_conf ->
findPackageModule_ hsc_env m pkg_conf
LookupMultiple rs ->
return (FoundMultiple rs)
LookupHidden pkg_hiddens mod_hiddens ->
......@@ -204,7 +176,7 @@ findExposedPackageModule hsc_env mod_name mb_pkg
, fr_mods_hidden = []
, fr_suggestions = suggest })
modLocationCache :: HscEnv -> Module -> IO FindExactResult -> IO FindExactResult
modLocationCache :: HscEnv -> Module -> IO FindResult -> IO FindResult
modLocationCache hsc_env mod do_this = do
m <- lookupFinderCache (hsc_FC hsc_env) mod
case m of
......@@ -217,7 +189,7 @@ modLocationCache hsc_env mod do_this = do
addHomeModuleToFinder :: HscEnv -> ModuleName -> ModLocation -> IO Module
addHomeModuleToFinder hsc_env mod_name loc = do
let mod = mkModule (thisPackage (hsc_dflags hsc_env)) mod_name
addToFinderCache (hsc_FC hsc_env) mod (FoundExact loc mod)
addToFinderCache (hsc_FC hsc_env) mod (Found loc mod)
return mod
uncacheModule :: HscEnv -> ModuleName -> IO ()
......@@ -244,7 +216,7 @@ uncacheModule hsc_env mod = do
--
-- 4. Some special-case code in GHCi (ToDo: Figure out why that needs to
-- call this.)
findHomeModule :: HscEnv -> ModuleName -> IO FindExactResult
findHomeModule :: HscEnv -> ModuleName -> IO FindResult
findHomeModule hsc_env mod_name =
homeSearchCache hsc_env mod_name $
let
......@@ -275,19 +247,19 @@ findHomeModule hsc_env mod_name =
-- This is important only when compiling the base package (where GHC.Prim
-- is a home module).
if mod == gHC_PRIM
then return (FoundExact (error "GHC.Prim ModLocation") mod)
then return (Found (error "GHC.Prim ModLocation") mod)
else searchPathExts home_path mod exts
-- | Search for a module in external packages only.
findPackageModule :: HscEnv -> Module -> IO FindExactResult
findPackageModule :: HscEnv -> Module -> IO FindResult
findPackageModule hsc_env mod = do
let
dflags = hsc_dflags hsc_env
pkg_id = modulePackageKey mod
--
case lookupPackage dflags pkg_id of
Nothing -> return (NoPackageExact pkg_id)
Nothing -> return (NoPackage pkg_id)
Just pkg_conf -> findPackageModule_ hsc_env mod pkg_conf
-- | Look up the interface file associated with module @mod@. This function
......@@ -297,14 +269,14 @@ findPackageModule hsc_env mod = do
-- the 'PackageConfig' must be consistent with the package key in the 'Module'.
-- The redundancy is to avoid an extra lookup in the package state
-- for the appropriate config.
findPackageModule_ :: HscEnv -> Module -> PackageConfig -> IO FindExactResult
findPackageModule_ :: HscEnv -> Module -> PackageConfig -> IO FindResult
findPackageModule_ hsc_env mod pkg_conf =
ASSERT( modulePackageKey mod == packageConfigId pkg_conf )
modLocationCache hsc_env mod $
-- special case for GHC.Prim; we won't find it in the filesystem.
if mod == gHC_PRIM
then return (FoundExact (error "GHC.Prim ModLocation") mod)
then return (Found (error "GHC.Prim ModLocation") mod)
else
let
......@@ -327,7 +299,7 @@ findPackageModule_ hsc_env mod pkg_conf =
-- don't bother looking for it.
let basename = moduleNameSlashes (moduleName mod)
loc <- mk_hi_loc one basename
return (FoundExact loc mod)
return (Found loc mod)
_otherwise ->
searchPathExts import_dirs mod [(package_hisuf, mk_hi_loc)]
......@@ -342,7 +314,7 @@ searchPathExts
FilePath -> BaseName -> IO ModLocation -- action
)
]
-> IO FindExactResult
-> IO FindResult
searchPathExts paths mod exts
= do result <- search to_search
......@@ -368,13 +340,15 @@ searchPathExts paths mod exts
file = base <.> ext
]
search [] = return (NotFoundExact {fer_paths = map fst to_search
,fer_pkg = Just (modulePackageKey mod)})
search [] = return (NotFound { fr_paths = map fst to_search
, fr_pkg = Just (modulePackageKey mod)
, fr_mods_hidden = [], fr_pkgs_hidden = []
, fr_suggestions = [] })
search ((file, mk_result) : rest) = do
b <- doesFileExist file
if b
then do { loc <- mk_result; return (FoundExact loc mod) }
then do { loc <- mk_result; return (Found loc mod) }
else search rest
mkHomeModLocationSearched :: DynFlags -> ModuleName -> FileExt
......@@ -597,8 +571,7 @@ cantFindErr cannot_find _ dflags mod_name find_result
vcat (map mod_hidden mod_hiddens) $$
tried_these files
_ -> pprPanic "cantFindErr"
(ptext cannot_find <+> quotes (ppr mod_name))
_ -> panic "cantFindErr"
build_tag = buildTag dflags
......
compiler/main/GHC.hs
View file @ 3f13c20e
......@@ -1361,20 +1361,6 @@ showRichTokenStream ts = go startLoc ts ""
-- | Takes a 'ModuleName' and possibly a 'PackageKey', and consults the
-- filesystem and package database to find the corresponding 'Module',
-- using the algorithm that is used for an @import@ declaration.
--
-- However, there is a twist for local modules, see #2682.
--
-- The full algorithm:
-- IF it's a package qualified import for a REMOTE package (not @this_pkg@ or
-- this), do a normal lookup.
-- OTHERWISE see if it is ALREADY loaded, and use it if it is.
-- OTHERWISE do a normal lookup, but reject the result if the found result
-- is from the LOCAL package (@this_pkg@).
--
-- For signatures, we return the BACKING implementation to keep the API
-- consistent with what we had before. (ToDo: create a new GHC API which
-- can deal with signatures.)
--
findModule :: GhcMonad m => ModuleName -> Maybe FastString -> m Module
findModule mod_name maybe_pkg = withSession $ \hsc_env -> do
let
......@@ -1385,23 +1371,17 @@ findModule mod_name maybe_pkg = withSession $ \hsc_env -> do
Just pkg | fsToPackageKey pkg /= this_pkg && pkg /= fsLit "this" -> liftIO $ do
res <- findImportedModule hsc_env mod_name maybe_pkg
case res of
FoundModule h -> return (fr_mod h)
FoundSigs _ backing -> return backing
Found _ m -> return m
err -> throwOneError $ noModError dflags noSrcSpan mod_name err
_otherwise -> do
home <- lookupLoadedHomeModule mod_name
case home of
-- TODO: This COULD be a signature
Just m -> return m
Nothing -> liftIO $ do
res <- findImportedModule hsc_env mod_name maybe_pkg
case res of
FoundModule (FoundHs { fr_mod = m, fr_loc = loc })
| modulePackageKey m /= this_pkg -> return m
| otherwise -> modNotLoadedError dflags m loc
FoundSigs (FoundHs { fr_loc = loc, fr_mod = m }:_) backing
| modulePackageKey m /= this_pkg -> return backing
| otherwise -> modNotLoadedError dflags m loc
Found loc m | modulePackageKey m /= this_pkg -> return m
| otherwise -> modNotLoadedError dflags m loc
err -> throwOneError $ noModError dflags noSrcSpan mod_name err
modNotLoadedError :: DynFlags -> Module -> ModLocation -> IO a
......@@ -1422,13 +1402,11 @@ lookupModule mod_name (Just pkg) = findModule mod_name (Just pkg)
lookupModule mod_name Nothing = withSession $ \hsc_env -> do
home <- lookupLoadedHomeModule mod_name
case home of
-- TODO: This COULD be a signature
Just m -> return m
Nothing -> liftIO $ do
res <- findExposedPackageModule hsc_env mod_name Nothing
case res of
FoundModule (FoundHs { fr_mod = m }) -> return m
FoundSigs _ backing -> return backing
Found _ m -> return m
err -> throwOneError $ noModError (hsc_dflags hsc_env) noSrcSpan mod_name err
lookupLoadedHomeModule :: GhcMonad m => ModuleName -> m (Maybe Module)
......
compiler/main/GhcMake.hs
View file @ 3f13c20e
......@@ -1818,10 +1818,7 @@ findSummaryBySourceFile summaries file
[] -> Nothing
(x:_) -> Just x
-- | Summarise a module, and pick up source and timestamp.
-- Returns @Nothing@ if the module is excluded via @excl_mods@ or is an
-- external package module (which we don't compile), otherwise returns the
-- new module summary (or an error saying why we couldn't summarise it).
-- Summarise a module, and pick up source and timestamp.
summariseModule
:: HscEnv
-> NodeMap ModSummary -- Map of old summaries
......@@ -1883,10 +1880,7 @@ summariseModule hsc_env old_summary_map is_boot (L loc wanted_mod)
uncacheModule hsc_env wanted_mod
found <- findImportedModule hsc_env wanted_mod Nothing
case found of
-- TODO: When we add -alias support, we can validly find
-- multiple signatures in the home package; need to make this
-- logic more flexible in that case.
FoundModule (FoundHs { fr_loc = location, fr_mod = mod })
Found location mod
| isJust (ml_hs_file location) ->
-- Home package
just_found location mod
......@@ -1895,15 +1889,6 @@ summariseModule hsc_env old_summary_map is_boot (L loc wanted_mod)
ASSERT(modulePackageKey mod /= thisPackage dflags)
return Nothing
FoundSigs hs _backing
| Just (FoundHs { fr_loc = location, fr_mod = mod })
<- find (isJust . ml_hs_file . fr_loc) hs ->
just_found location mod
| otherwise ->
ASSERT(all (\h -> modulePackageKey (fr_mod h)
/= thisPackage dflags) hs)
return Nothing
err -> return $ Just $ Left $ noModError dflags loc wanted_mod err
-- Not found
......
compiler/main/HscTypes.hs
View file @ 3f13c20e
......@@ -10,7 +10,7 @@
module HscTypes (
-- * compilation state
HscEnv(..), hscEPS,
FinderCache, FindResult(..), FoundHs(..), FindExactResult(..),
FinderCache, FindResult(..),
Target(..), TargetId(..), pprTarget, pprTargetId,
ModuleGraph, emptyMG,
HscStatus(..),
......@@ -674,30 +674,15 @@ prepareAnnotations hsc_env mb_guts = do
-- modules along the search path. On @:load@, we flush the entire
-- contents of this cache.
--
type FinderCache = ModuleEnv FindExactResult
-- | The result of search for an exact 'Module'.
data FindExactResult
= FoundExact ModLocation Module
-- ^ The module/signature was found
| NoPackageExact PackageKey
| NotFoundExact
{ fer_paths :: [FilePath]
, fer_pkg :: Maybe PackageKey
}
-- | A found module or signature; e.g. anything with an interface file
data FoundHs = FoundHs { fr_loc :: ModLocation
, fr_mod :: Module
-- , fr_origin :: ModuleOrigin
}
-- Although the @FinderCache@ range is 'FindResult' for convenience,
-- in fact it will only ever contain 'Found' or 'NotFound' entries.
--
type FinderCache = ModuleEnv FindResult
-- | The result of searching for an imported module.
data FindResult
= FoundModule FoundHs
= Found ModLocation Module
-- ^ The module was found
| FoundSigs [FoundHs] Module
-- ^ Signatures were found, with some backing implementation
| NoPackage PackageKey
-- ^ The requested package was not found
| FoundMultiple [(Module, ModuleOrigin)]
......@@ -2093,15 +2078,6 @@ type IsBootInterface = Bool
-- Invariant: the dependencies of a module @M@ never includes @M@.
--
-- Invariant: none of the lists contain duplicates.
--
-- NB: While this contains information about all modules and packages below
-- this one in the the import *hierarchy*, this may not accurately reflect
-- the full runtime dependencies of the module. This is because this module may
-- have imported a boot module, in which case we'll only have recorded the
-- dependencies from the hs-boot file, not the actual hs file. (This is
-- unavoidable: usually, the actual hs file will have been compiled *after*
-- we wrote this interface file.) See #936, and also @getLinkDeps@ in
-- @compiler/ghci/Linker.hs@ for code which cares about this distinction.
data Dependencies
= Deps { dep_mods :: [(ModuleName, IsBootInterface)]
-- ^ All home-package modules transitively below this one
......
compiler/main/Packages.hs
View file @ 3f13c20e
......@@ -132,10 +132,9 @@ import qualified Data.Set as Set
-- in a different DLL, by setting the DLL flag.
-- | Given a module name, there may be multiple ways it came into scope,
-- possibly simultaneously. For a given particular implementation (e.g.
-- original module, or even a signature module), this data type tracks all the
-- possible ways it could have come into scope. Warning: don't use the record
-- functions, they're partial!
-- possibly simultaneously. This data type tracks all the possible ways
-- it could have come into scope. Warning: don't use the record functions,
-- they're partial!
data ModuleOrigin =
-- | Module is hidden, and thus never will be available for import.
-- (But maybe the user didn't realize), so we'll still keep track
......@@ -159,7 +158,7 @@ data ModuleOrigin =
}