mkHomeModLocation, -- :: ModuleName -> FilePath -> IO ModLocation
mkHomeModLocation2, -- :: ModuleName -> FilePath -> String -> IO ModLocation
addHomeModuleToFinder, -- :: HscEnv -> Module -> ModLocation -> IO ()
+ uncacheModule, -- :: HscEnv -> Module -> IO ()
+ mkStubPaths,
findObjectLinkableMaybe,
findObjectLinkable,
#include "HsVersions.h"
import Module
-import UniqFM ( filterUFM )
+import UniqFM ( filterUFM, delFromUFM )
import HscTypes
import Packages
import FastString
import Util
import DynFlags ( DynFlags(..), isOneShot, GhcMode(..) )
import Outputable
+import Maybes ( expectJust )
import DATA_IOREF ( IORef, writeIORef, readIORef )
import System.Directory
import System.IO
import Control.Monad
-import Maybes ( MaybeErr(..) )
import Data.Maybe ( isNothing )
import Time ( ClockTime )
-- source, interface, and object files for that module live.
-- It does *not* know which particular package a module lives in. Use
--- Packages.moduleToPackageConfig for that.
+-- Packages.lookupModuleInAllPackages for that.
-- -----------------------------------------------------------------------------
-- The finder's cache
fm <- readIORef finder_cache
writeIORef finder_cache $! extendModuleEnv fm mod_name entry
+removeFromFinderCache :: IORef FinderCache -> Module -> IO ()
+removeFromFinderCache finder_cache mod_name = do
+ fm <- readIORef finder_cache
+ writeIORef finder_cache $! delFromUFM fm mod_name
+
lookupFinderCache :: IORef FinderCache -> Module -> IO (Maybe FinderCacheEntry)
lookupFinderCache finder_cache mod_name = do
fm <- readIORef finder_cache
data FindResult
= Found ModLocation PackageIdH
-- the module was found
- | FoundMultiple ModLocation PackageId
- -- *error*: both a home module and a package module
+ | FoundMultiple [PackageId]
+ -- *error*: both in multiple packages
| PackageHidden PackageId
-- for an explicit source import: the package containing the module is
-- not exposed.
findPackageModule = findModule' False
-type LocalFindResult = MaybeErr [FilePath] FinderCacheEntry
- -- LocalFindResult is used for internal functions which
- -- return a more informative type; it's munged into
- -- the external FindResult by 'cached'
+data LocalFindResult
+ = Ok FinderCacheEntry
+ | CantFindAmongst [FilePath]
+ | MultiplePackages [PackageId]
findModule' :: Bool -> HscEnv -> Module -> Bool -> IO FindResult
findModule' home_allowed hsc_env name explicit
| not home_allowed = do
j <- findPackageModule' dflags name
case j of
- Failed paths -> return (NotFound paths)
- Succeeded entry -> found_new entry
+ Ok entry -> found_new entry
+ MultiplePackages pkgs -> return (FoundMultiple pkgs)
+ CantFindAmongst paths -> return (NotFound paths)
- | home_allowed && explicit = do
- -- for an explict home import, we try looking for
- -- both a package module and a home module, and report
- -- a FoundMultiple if we find both.
+ | otherwise = do
j <- findHomeModule' dflags name
case j of
- Failed home_files -> do
+ Ok entry -> found_new entry
+ MultiplePackages pkgs -> return (FoundMultiple pkgs)
+ CantFindAmongst home_files -> do
r <- findPackageModule' dflags name
case r of
- Failed pkg_files ->
- return (NotFound (home_files ++ pkg_files))
- Succeeded entry ->
- found_new entry
- Succeeded entry@(loc,_) -> do
- r <- findPackageModule' dflags name
- case r of
- Failed pkg_files -> found_new entry
- Succeeded (_,Just (pkg,_)) ->
- return (FoundMultiple loc (packageConfigId pkg))
- Succeeded _ ->
- panic "findModule: shouldn't happen"
-
- -- implicit home imports: check for package modules first,
- -- because that's the quickest (doesn't involve filesystem
- -- operations).
- | home_allowed && not explicit = do
- r <- findPackageModule' dflags name
- case r of
- Failed pkg_files -> do
- j <- findHomeModule' dflags name
- case j of
- Failed home_files ->
+ CantFindAmongst pkg_files ->
return (NotFound (home_files ++ pkg_files))
- Succeeded entry ->
+ MultiplePackages pkgs ->
+ return (FoundMultiple pkgs)
+ Ok entry ->
found_new entry
- Succeeded entry ->
- found_new entry
-
addHomeModuleToFinder :: HscEnv -> Module -> ModLocation -> IO ()
addHomeModuleToFinder hsc_env mod loc
= addToFinderCache (hsc_FC hsc_env) mod (loc, Nothing)
+uncacheModule :: HscEnv -> Module -> IO ()
+uncacheModule hsc_env mod = removeFromFinderCache (hsc_FC hsc_env) mod
-- -----------------------------------------------------------------------------
-- The internal workers
findPackageModule' :: DynFlags -> Module -> IO LocalFindResult
findPackageModule' dflags mod
- = case moduleToPackageConfig dflags mod of
- Nothing -> return (Failed [])
- Just pkg_info -> findPackageIface dflags mod pkg_info
+ = case lookupModuleInAllPackages dflags mod of
+ [] -> return (CantFindAmongst [])
+ [pkg_info] -> findPackageIface dflags mod pkg_info
+ many -> return (MultiplePackages (map (mkPackageId.package.fst) many))
findPackageIface :: DynFlags -> Module -> (PackageConfig,Bool) -> IO LocalFindResult
findPackageIface dflags mod pkg_info@(pkg_conf, _) = do
return result
where
- basename = dots_to_slashes (moduleUserString mod)
+ basename = dots_to_slashes (moduleString mod)
to_search :: [(FilePath, IO FinderCacheEntry)]
to_search = [ (file, fn path basename)
| path <- paths,
(ext,fn) <- exts,
let base | path == "." = basename
- | otherwise = path ++ '/':basename
- file = base ++ '.':ext
+ | otherwise = path `joinFileName` basename
+ file = base `joinFileExt` ext
]
- search [] = return (Failed (map fst to_search))
+ search [] = return (CantFindAmongst (map fst to_search))
search ((file, mk_result) : rest) = do
b <- doesFileExist file
if b
- then do { res <- mk_result; return (Succeeded res) }
+ then do { res <- mk_result; return (Ok res) }
else search rest
mkHomeModLocationSearched :: DynFlags -> Module -> FileExt
-> FilePath -> BaseName -> IO FinderCacheEntry
mkHomeModLocationSearched dflags mod suff path basename = do
- loc <- mkHomeModLocation2 dflags mod (path ++ '/':basename) suff
+ loc <- mkHomeModLocation2 dflags mod (path `joinFileName` basename) suff
return (loc, Nothing)
mkHiOnlyModLocation :: DynFlags -> FileExt -> FilePath -> BaseName
-> String -- Suffix
-> IO ModLocation
mkHomeModLocation2 dflags mod src_basename ext = do
- let mod_basename = dots_to_slashes (moduleUserString mod)
+ let mod_basename = dots_to_slashes (moduleString mod)
- obj_fn <- mkObjPath dflags src_basename mod_basename
- hi_fn <- mkHiPath dflags src_basename mod_basename
+ obj_fn <- mkObjPath dflags src_basename mod_basename
+ hi_fn <- mkHiPath dflags src_basename mod_basename
- return (ModLocation{ ml_hs_file = Just (src_basename ++ '.':ext),
+ return (ModLocation{ ml_hs_file = Just (src_basename `joinFileExt` ext),
ml_hi_file = hi_fn,
ml_obj_file = obj_fn })
hiOnlyModLocation :: DynFlags -> FilePath -> String -> Suffix -> IO ModLocation
hiOnlyModLocation dflags path basename hisuf
- = do let full_basename = path++'/':basename
- obj_fn <- mkObjPath dflags full_basename basename
+ = do let full_basename = path `joinFileName` basename
+ obj_fn <- mkObjPath dflags full_basename basename
return ModLocation{ ml_hs_file = Nothing,
- ml_hi_file = full_basename ++ '.':hisuf,
+ ml_hi_file = full_basename `joinFileExt` hisuf,
-- Remove the .hi-boot suffix from
-- hi_file, if it had one. We always
-- want the name of the real .hi file
-> IO FilePath
mkObjPath dflags basename mod_basename
= do let
- odir = outputDir dflags
+ odir = objectDir dflags
osuf = objectSuf dflags
- obj_basename | Just dir <- odir = dir ++ '/':mod_basename
+ obj_basename | Just dir <- odir = dir `joinFileName` mod_basename
| otherwise = basename
- return (obj_basename ++ '.':osuf)
+ return (obj_basename `joinFileExt` osuf)
-- | Constructs the filename of a .hi file for a given source file.
-- Does /not/ check whether the .hi file exists
hidir = hiDir dflags
hisuf = hiSuf dflags
- hi_basename | Just dir <- hidir = dir ++ '/':mod_basename
+ hi_basename | Just dir <- hidir = dir `joinFileName` mod_basename
| otherwise = basename
- return (hi_basename ++ '.':hisuf)
+ return (hi_basename `joinFileExt` hisuf)
+
+
+-- -----------------------------------------------------------------------------
+-- Filenames of the stub files
+
+-- We don't have to store these in ModLocations, because they can be derived
+-- from other available information, and they're only rarely needed.
+
+mkStubPaths
+ :: DynFlags
+ -> Module
+ -> ModLocation
+ -> (FilePath,FilePath)
+
+mkStubPaths dflags mod location
+ = let
+ stubdir = stubDir dflags
+
+ mod_basename = dots_to_slashes (moduleString mod)
+ src_basename = basenameOf (expectJust "mkStubPaths"
+ (ml_hs_file location))
+
+ stub_basename0
+ | Just dir <- stubdir = dir `joinFileName` mod_basename
+ | otherwise = src_basename
+ stub_basename = stub_basename0 ++ "_stub"
+ in
+ (stub_basename `joinFileExt` "c",
+ stub_basename `joinFileExt` "h")
+ -- the _stub.o filename is derived from the ml_obj_file.
-- -----------------------------------------------------------------------------
-- findLinkable isn't related to the other stuff in here,
-- Error messages
cantFindError :: DynFlags -> Module -> FindResult -> SDoc
-cantFindError dflags mod_name (FoundMultiple loc pkg)
+cantFindError dflags mod_name (FoundMultiple pkgs)
= hang (ptext SLIT("Cannot import") <+> quotes (ppr mod_name) <> colon) 2 (
- sep [ptext SLIT("it was found in both") <+>
- (case ml_hs_file loc of Nothing -> ptext SLIT("<unkonwn file>")
- Just f -> text f),
- ptext SLIT("and package") <+> ppr pkg <> char '.'] $$
- ptext SLIT("Possible fix: -ignore-package") <+> ppr pkg
+ 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)
-> hang (ptext SLIT("locations searched:"))
2 (vcat (map text files))
- Found _ _ -> panic "cantFindErr"
+ _ -> panic "cantFindErr"
\end{code}
projects / ghc-hetmet.git / blobdiff