X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fmain%2FFinder.lhs;h=6e2b11d0257fc0734ea711de682b2d538311f055;hb=6a05ec5ef5373f61b7f9f5bdc344483417fa801b;hp=fd0982da197dba8a7fb19ff9a46df5e9f85654fe;hpb=61d2625ae2e6a4cdae2ffc92df828905e81c24cc;p=ghc-hetmet.git diff --git a/compiler/main/Finder.lhs b/compiler/main/Finder.lhs index fd0982d..6e2b11d 100644 --- a/compiler/main/Finder.lhs +++ b/compiler/main/Finder.lhs @@ -19,7 +19,8 @@ module Finder ( findObjectLinkableMaybe, findObjectLinkable, - cantFindError, + cannotFindModule, + cannotFindInterface, ) where #include "HsVersions.h" @@ -36,13 +37,12 @@ import FiniteMap import UniqFM import Maybes ( expectJust ) -import DATA_IOREF ( IORef, writeIORef, readIORef, modifyIORef ) - +import Data.IORef ( IORef, writeIORef, readIORef, modifyIORef ) import Data.List import System.Directory import System.IO import Control.Monad -import Time ( ClockTime ) +import System.Time ( ClockTime ) type FileExt = String -- Filename extension @@ -80,16 +80,25 @@ flushModLocationCache this_pkg ref = do where is_ext mod _ | modulePackageId mod /= this_pkg = True | otherwise = False +addToFinderCache :: IORef FinderCache -> ModuleName -> FindResult -> IO () addToFinderCache ref key val = modifyIORef ref $ \c -> addToUFM c key val + +addToModLocationCache :: IORef ModLocationCache -> Module -> ModLocation -> IO () addToModLocationCache ref key val = modifyIORef ref $ \c -> addToFM c key val +removeFromFinderCache :: IORef FinderCache -> ModuleName -> IO () removeFromFinderCache ref key = modifyIORef ref $ \c -> delFromUFM c key + +removeFromModLocationCache :: IORef ModLocationCache -> Module -> IO () removeFromModLocationCache ref key = modifyIORef ref $ \c -> delFromFM c key +lookupFinderCache :: IORef FinderCache -> ModuleName -> IO (Maybe FindResult) lookupFinderCache ref key = do c <- readIORef ref return $! lookupUFM c key +lookupModLocationCache :: IORef ModLocationCache -> Module + -> IO (Maybe ModLocation) lookupModLocationCache ref key = do c <- readIORef ref return $! lookupFM c key @@ -141,13 +150,14 @@ findExactModule hsc_env mod = -- ----------------------------------------------------------------------------- -- Helpers +orIfNotFound :: IO FindResult -> IO FindResult -> IO FindResult this `orIfNotFound` or_this = do res <- this case res of - NotFound here -> do + NotFound here _ -> do res2 <- or_this case res2 of - NotFound or_here -> return (NotFound (here ++ or_here)) + NotFound or_here pkg -> return (NotFound (here ++ or_here) pkg) _other -> return res2 _other -> return res @@ -168,7 +178,7 @@ homeSearchCache hsc_env mod_name do_this = do findExposedPackageModule :: HscEnv -> ModuleName -> IO FindResult findExposedPackageModule hsc_env mod_name -- not found in any package: - | null found = return (NotFound []) + | null found = return (NotFound [] Nothing) -- found in just one exposed package: | [(pkg_conf, _)] <- found_exposed = let pkgid = mkPackageId (package pkg_conf) in @@ -243,6 +253,14 @@ findHomeModule hsc_env mod_name = exts | isOneShot (ghcMode dflags) = hi_exts | otherwise = source_exts in + + -- special case for GHC.Prim; we won't find it in the filesystem. + -- This is important only when compiling the base package (where GHC.Prim + -- is a home module). + if mod == gHC_PRIM + then return (Found (error "GHC.Prim ModLocation") mod) + else + searchPathExts home_path mod exts @@ -258,6 +276,7 @@ findPackageModule hsc_env mod = do Nothing -> return (NoPackage pkg_id) Just pkg_conf -> findPackageModule_ hsc_env mod pkg_conf +findPackageModule_ :: HscEnv -> Module -> PackageConfig -> IO FindResult findPackageModule_ hsc_env mod pkg_conf = modLocationCache hsc_env mod $ @@ -329,7 +348,7 @@ searchPathExts paths mod exts file = base `joinFileExt` ext ] - search [] = return (NotFound (map fst to_search)) + search [] = return (NotFound (map fst to_search) (Just (modulePackageId mod))) search ((file, mk_result) : rest) = do b <- doesFileExist file if b @@ -453,7 +472,7 @@ mkStubPaths :: DynFlags -> ModuleName -> ModLocation - -> (FilePath,FilePath) + -> (FilePath,FilePath,FilePath) mkStubPaths dflags mod location = let @@ -468,9 +487,23 @@ mkStubPaths dflags mod location | otherwise = src_basename stub_basename = stub_basename0 ++ "_stub" + + -- this is the filename we're going to use when + -- #including the stub_h file from the .hc file. + -- Without -stubdir, we just #include the basename + -- (eg. for a module A.B, we #include "B_stub.h"), + -- relying on the fact that we add an implicit -I flag + -- for the directory in which the source file resides + -- (see DriverPipeline.hs). With -stubdir, we + -- #include "A/B.h", assuming that the user has added + -- -I along with -stubdir . + include_basename + | Just _ <- stubdir = mod_basename + | otherwise = filenameOf src_basename in (stub_basename `joinFileExt` "c", - stub_basename `joinFileExt` "h") + stub_basename `joinFileExt` "h", + (include_basename ++ "_stub") `joinFileExt` "h") -- the _stub.o filename is derived from the ml_obj_file. -- ----------------------------------------------------------------------------- @@ -490,7 +523,7 @@ findObjectLinkableMaybe mod locn findObjectLinkable :: Module -> FilePath -> ClockTime -> IO Linkable findObjectLinkable mod obj_fn obj_time = do let stub_fn = case splitFilename3 obj_fn of - (dir, base, ext) -> dir ++ "/" ++ base ++ "_stub.o" + (dir, base, _ext) -> dir ++ "/" ++ base ++ "_stub.o" stub_exist <- doesFileExist stub_fn if stub_exist then return (LM obj_time mod [DotO obj_fn, DotO stub_fn]) @@ -499,20 +532,26 @@ findObjectLinkable mod obj_fn obj_time = do -- ----------------------------------------------------------------------------- -- Utils +dots_to_slashes :: String -> String dots_to_slashes = map (\c -> if c == '.' then '/' else c) - -- ----------------------------------------------------------------------------- -- Error messages -cantFindError :: DynFlags -> ModuleName -> FindResult -> SDoc -cantFindError dflags mod_name (FoundMultiple pkgs) - = hang (ptext SLIT("Cannot import") <+> quotes (ppr mod_name) <> colon) 2 ( +cannotFindModule :: DynFlags -> ModuleName -> FindResult -> SDoc +cannotFindModule = cantFindErr SLIT("Could not find module") + +cannotFindInterface :: DynFlags -> ModuleName -> FindResult -> SDoc +cannotFindInterface = cantFindErr SLIT("Failed to load interface for") + +cantFindErr :: LitString -> DynFlags -> ModuleName -> FindResult -> SDoc +cantFindErr cannot_find _dflags mod_name (FoundMultiple pkgs) + = hang (ptext cannot_find <+> quotes (ppr mod_name) <> colon) 2 ( sep [ptext SLIT("it was found in multiple packages:"), hsep (map (text.packageIdString) pkgs)] ) -cantFindError dflags mod_name find_result - = hang (ptext SLIT("Could not find module") <+> quotes (ppr mod_name) <> colon) +cantFindErr cannot_find dflags mod_name find_result + = hang (ptext cannot_find <+> quotes (ppr mod_name) <> colon) 2 more_info where more_info @@ -529,17 +568,31 @@ cantFindError dflags mod_name find_result -> ptext SLIT("no package matching") <+> ppr pkg <+> ptext SLIT("was found") - NotFound files + NotFound files mb_pkg | null files -> ptext SLIT("it is not a module in the current program, or in any known package.") - | verbosity dflags < 3 - -> ptext SLIT("use -v to see a list of the files searched for") - | otherwise - -> hang (ptext SLIT("locations searched:")) - 2 (vcat (map text files)) + | Just pkg <- mb_pkg, pkg /= thisPackage dflags, build_tag /= "" + -> let + build = if build_tag == "p" then "profiling" + else "\"" ++ build_tag ++ "\"" + in + ptext SLIT("Perhaps you haven't installed the ") <> text build <> + ptext SLIT(" libraries for package ") <> ppr pkg <> char '?' $$ + not_found files + + | otherwise + -> not_found files NotFoundInPackage pkg -> ptext SLIT("it is not in package") <+> ppr pkg _ -> panic "cantFindErr" + + build_tag = buildTag dflags + + not_found files + | verbosity dflags < 3 + = ptext SLIT("Use -v to see a list of the files searched for.") + | otherwise + = hang (ptext SLIT("locations searched:")) 2 (vcat (map text files)) \end{code}