module Finder (
initFinder, -- :: [PackageConfig] -> IO (),
findModule, -- :: ModuleName -> IO (Maybe (Module, ModuleLocation))
+ findModuleDep, -- :: ModuleName -> Bool -> IO (Maybe (Module, ModuleLocation))
findPackageModule, -- :: ModuleName -> IO (Maybe (Module, ModuleLocation))
mkHomeModuleLocn, -- :: ModuleName -> String -> Maybe FilePath
-- -> IO ModuleLocation
emptyHomeDirCache = return ()
findModule :: ModuleName -> IO (Maybe (Module, ModuleLocation))
-findModule name
- = do { j <- maybeHomeModule name
+findModule name = findModuleDep name False
+
+findModuleDep :: ModuleName -> Bool -> IO (Maybe (Module, ModuleLocation))
+findModuleDep name is_source
+ = do { j <- maybeHomeModule name is_source
; case j of
Just home_module -> return (Just home_module)
- Nothing -> findPackageModule name
+ Nothing -> findPackageMod name False
}
-maybeHomeModule :: ModuleName -> IO (Maybe (Module, ModuleLocation))
-maybeHomeModule mod_name = do
+maybeHomeModule :: ModuleName -> Bool -> IO (Maybe (Module, ModuleLocation))
+maybeHomeModule mod_name is_source = do
home_path <- readIORef v_Import_paths
+ hisuf <- readIORef v_Hi_suf
let mod_str = moduleNameUserString mod_name
basename = map (\c -> if c == '.' then '/' else c) mod_str
- hs = basename ++ ".hs"
- lhs = basename ++ ".lhs"
-
- found <- findOnPath home_path hs
- case found of {
- -- special case to avoid getting "./foo.hs" all the time
- Just "." -> mkHomeModuleLocn mod_name basename (Just hs);
- Just path -> mkHomeModuleLocn mod_name
- (path ++ '/':basename) (Just (path ++ '/':hs));
- Nothing -> do
-
- found <- findOnPath home_path lhs
- case found of {
- -- special case to avoid getting "./foo.hs" all the time
- Just "." -> mkHomeModuleLocn mod_name basename (Just lhs);
- Just path -> mkHomeModuleLocn mod_name
- (path ++ '/':basename) (Just (path ++ '/':lhs));
- Nothing -> do
-
- -- can't find a source file anywhere, check for a lone .hi file.
- hisuf <- readIORef v_Hi_suf
- let hi = basename ++ '.':hisuf
- found <- findOnPath home_path hi
- case found of {
- Just path -> mkHiOnlyModuleLocn mod_name hi;
- Nothing -> do
-
- -- last chance: .hi-boot-<ver> and .hi-boot
- let hi_boot = basename ++ ".hi-boot"
- let hi_boot_ver = basename ++ ".hi-boot-" ++ cHscIfaceFileVersion
- found <- findOnPath home_path hi_boot_ver
- case found of {
- Just path -> mkHiOnlyModuleLocn mod_name hi;
- Nothing -> do
- found <- findOnPath home_path hi_boot
- case found of {
- Just path -> mkHiOnlyModuleLocn mod_name hi;
- Nothing -> return Nothing
- }}}}}
-
-
-mkHiOnlyModuleLocn mod_name hi_file = do
- return (Just (mkHomeModule mod_name,
- ModuleLocation{
- ml_hspp_file = Nothing,
- ml_hs_file = Nothing,
- ml_hi_file = hi_file,
- ml_obj_file = Nothing
- }
- ))
+ -- last chance: .hi-boot-<ver> and .hi-boot
+ hi_boot_ver = "hi-boot-" ++ cHscIfaceFileVersion
+
+ std_exts =
+ [ (hisuf,
+ \ _ fName path -> mkHiOnlyModuleLocn mod_name fName)
+ , ("hs",
+ \ _ fName path -> mkHomeModuleLocn mod_name path (Just fName))
+ , ("lhs",
+ \ _ fName path -> mkHomeModuleLocn mod_name path (Just fName))
+ ]
+
+ boot_exts =
+ [ (hi_boot_ver, \ _ fName path -> mkHiOnlyModuleLocn mod_name fName)
+ , ("hi-boot", \ _ fName path -> mkHiOnlyModuleLocn mod_name fName)
+ ]
+
+ searchPathExts
+ (map ((,) undefined) home_path)
+ basename
+ (if is_source then (boot_exts++std_exts) else std_exts ++ boot_exts)
+ -- for SOURCE imports, check the hi-boot extensions
+ -- before the source/iface ones, to avoid
+ -- creating circ Makefile deps.
+
+mkHiOnlyModuleLocn mod_name hi_file =
+ return
+ ( mkHomeModule mod_name
+ , ModuleLocation{ ml_hspp_file = Nothing
+ , ml_hs_file = Nothing
+ , ml_hi_file = hi_file
+ , ml_obj_file = Nothing
+ }
+ )
-- The .hi file always follows the module name, whereas the object
-- file may follow the name of the source file in the case where the
-- as the source, but can be overriden by a -odir flag.
o_file <- odir_ify (basename ++ '.':phaseInputExt Ln) >>= osuf_ify
- return (Just (mkHomeModule mod_name,
- ModuleLocation{
- ml_hspp_file = Nothing,
- ml_hs_file = maybe_source_fn,
- ml_hi_file = hi_file,
- ml_obj_file = Just o_file
- }
- ))
-
-
-findPackageModule :: ModuleName -> IO (Maybe (Module, ModuleLocation))
-findPackageModule mod_name = do
+ return (mkHomeModule mod_name,
+ ModuleLocation{ ml_hspp_file = Nothing
+ , ml_hs_file = maybe_source_fn
+ , ml_hi_file = hi_file
+ , ml_obj_file = Just o_file
+ })
+
+findPackageMod :: ModuleName
+ -> Bool
+ -> IO (Maybe (Module, ModuleLocation))
+findPackageMod mod_name hiOnly = do
pkgs <- getPackageInfo
- -- hi-suffix for packages depends on the build tag.
+ -- hi-suffix for packages depends on the build tag.
package_hisuf <-
do tag <- readIORef v_Build_tag
if null tag
then return "hi"
else return (tag ++ "_hi")
-
- let mod_str = moduleNameUserString mod_name
+ let imp_dirs = concatMap (\ pkg -> map ((,) pkg) (import_dirs pkg)) pkgs
+ mod_str = moduleNameUserString mod_name
basename = map (\c -> if c == '.' then '/' else c) mod_str
- hi = basename ++ '.':package_hisuf
-
- found <- findOnPackagePath pkgs hi
- case found of
- Nothing -> return Nothing
- Just (pkg_name,path) ->
- return (Just (mkModule mod_name pkg_name,
- ModuleLocation{
- ml_hspp_file = Nothing,
- ml_hs_file = Nothing,
- ml_hi_file = path ++ '/':hi,
- ml_obj_file = Nothing
- }
- ))
-
-findOnPackagePath :: [PackageConfig] -> String
- -> IO (Maybe (PackageName,FilePath))
-findOnPackagePath pkgs file = loop pkgs
+ searchPathExts
+ imp_dirs basename
+ ((package_hisuf,\ pkg fName path -> mkPackageModule mod_name pkg Nothing path) :
+ -- can packages contain hi-boots?
+ (if hiOnly then [] else
+ [ ("hs", \ pkg fName path -> mkPackageModule mod_name pkg (Just fName) path)
+ , ("lhs", \ pkg fName path -> mkPackageModule mod_name pkg (Just fName) path)
+ ]))
where
- loop [] = return Nothing
- loop (p:ps) = do
- found <- findOnPath (import_dirs p) file
- case found of
- Nothing -> loop ps
- Just path -> return (Just (mkFastString (name p), path))
+ mkPackageModule mod_name pkg mbFName path =
+ return ( mkModule mod_name (mkFastString (name pkg))
+ , ModuleLocation{ ml_hspp_file = Nothing
+ , ml_hs_file = mbFName
+ , ml_hi_file = path ++".hi"
+ , ml_obj_file = Nothing
+ })
-findOnPath :: [String] -> String -> IO (Maybe FilePath)
+findPackageModule :: ModuleName -> IO (Maybe (Module, ModuleLocation))
+findPackageModule mod_name = findPackageMod mod_name True
+
+searchPathExts :: [(a, FilePath)]
+ -> String
+ -> [(String, a -> FilePath -> String -> IO (Module, ModuleLocation))]
+ -> IO (Maybe (Module, ModuleLocation))
+searchPathExts path basename exts = search exts
+ where
+ search [] = return Nothing
+ search ((x,f):xs) = do
+ let fName = (basename ++ '.':x)
+ found <- findOnPath path fName
+ case found of
+ -- special case to avoid getting "./foo.<ext>" all the time
+ Just (v,".") -> fmap Just (f v fName basename)
+ Just (v,path) -> fmap Just (f v (path ++ '/':fName)
+ (path ++ '/':basename))
+ Nothing -> search xs
+
+findOnPath :: [(a,String)] -> String -> IO (Maybe (a, FilePath))
findOnPath path s = loop path
where
loop [] = return Nothing
- loop (d:ds) = do
+ loop ((a,d):ds) = do
let file = d ++ '/':s
b <- doesFileExist file
- if b then return (Just d) else loop ds
+ if b then return (Just (a,d)) else loop ds
\end{code}
projects / ghc-hetmet.git / commitdiff