- -- populate the home dir cache, using the import path (the import path
- -- is changed by -i flags on the command line, and defaults to ["."]).
- home_imports <- readIORef v_Import_paths
- let extendFM fm path = do
- contents <- getDirectoryContents' path
- return (addListToFM fm (zip contents (repeat path)))
- home_map <- foldM extendFM emptyFM home_imports
- writeIORef v_HomeDirCache home_map
-
- -- populate the package cache, if necessary
- pkg_cache <- readIORef v_PkgDirCache
- case pkg_cache of
- Nothing -> do
-
- let extendFM fm pkg = do
- let dirs = import_dirs pkg
- pkg_name = _PK_ (name pkg)
- let addDir fm dir = do
- contents <- getDirectoryContents' dir
- return (addListToFM fm (zip contents
- (repeat (pkg_name,dir))))
- foldM addDir fm dirs
-
- pkg_map <- foldM extendFM emptyFM pkgs
- writeIORef v_PkgDirCache (Just pkg_map)
-
- Just _ ->
- return ()
-
- -- and return the finder
- return finder
-
-
-finder :: ModuleName -> IO (Maybe (Module, ModuleLocation))
-finder name = do
- j <- maybeHomeModule name
- case j of
- Just home_module -> return (Just home_module)
- Nothing -> maybePackageModule name
+findModule :: ModuleName -> IO (Maybe (Module, ModuleLocation))
+findModule name
+ = do { j <- maybeHomeModule name
+ ; case j of
+ Just home_module -> return (Just home_module)
+ Nothing -> maybePackageModule name
+ }