\begin{code}
module Finder (
- initFinder, -- :: PackageConfigInfo -> IO (),
- findModule -- :: ModuleName -> IO (Maybe (Module, ModuleLocation))
+ initFinder, -- :: [PackageConfig] -> IO (),
+ findModule, -- :: ModuleName -> IO (Maybe (Module, ModuleLocation))
+ mkHomeModuleLocn, -- :: ModuleName -> String -> FilePath
+ -- -> IO ModuleLocation
+ emptyHomeDirCache -- :: IO ()
) where
#include "HsVersions.h"
import CmStaticInfo
import DriverPhases
import DriverState
+import DriverUtil
import Module
import FiniteMap
import Util
+import Panic ( panic )
+import Config
import IOExts
import Directory
import List
import IO
import Monad
-import Outputable ( showSDoc, ppr ) -- debugging only
+import Outputable
\end{code}
The Finder provides a thin filesystem abstraction to the rest of the
\begin{code}
-- v_PkgDirCache caches contents of package directories, never expunged
-GLOBAL_VAR(v_PkgDirCache, error "no pkg cache!", FiniteMap String (PackageName, FilePath))
+GLOBAL_VAR(v_PkgDirCache, panic "no pkg cache!",
+ FiniteMap String (PackageName, FilePath))
-- v_HomeDirCache caches contents of home directories,
-- expunged whenever we create a new finder.
-GLOBAL_VAR(v_HomeDirCache, Nothing, Maybe (FiniteMap String FilePath))
+GLOBAL_VAR(v_HomeDirCache, Nothing, Maybe (FiniteMap String FilePath))
-initFinder :: PackageConfigInfo -> IO ()
+initFinder :: [PackageConfig] -> IO ()
initFinder pkgs
= do { -- expunge our home cache
; writeIORef v_HomeDirCache Nothing
-- lazilly fill in the package cache
; writeIORef v_PkgDirCache (unsafePerformIO (newPkgCache pkgs))
-
--- Debug output
--- ; pkg_dbg_info <- readIORef v_PkgDirCache
--- ; putStrLn (unlines (map show (fmToList pkg_dbg_info)))
}
+emptyHomeDirCache :: IO ()
+emptyHomeDirCache
+ = writeIORef v_HomeDirCache Nothing
+
findModule :: ModuleName -> IO (Maybe (Module, ModuleLocation))
findModule name
- = do { hPutStr stderr ("findModule: " ++ moduleNameUserString name ++ " ... ")
- ; maybe_m <- findModule_wrk name
- ; case maybe_m of
- Nothing -> hPutStrLn stderr "Not Found"
- Just mm -> hPutStrLn stderr (showSDoc (ppr (snd mm)))
- ; return maybe_m
- }
-
-findModule_wrk :: ModuleName -> IO (Maybe (Module, ModuleLocation))
-findModule_wrk name
= do { j <- maybeHomeModule name
; case j of
Just home_module -> return (Just home_module)
- Nothing -> maybePackageModule name
+ Nothing -> maybePackageModule name
}
maybeHomeModule :: ModuleName -> IO (Maybe (Module, ModuleLocation))
Just home_map -> return home_map
- let basename = moduleNameString mod_name
+ let basename = moduleNameUserString mod_name
hs = basename ++ ".hs"
lhs = basename ++ ".lhs"
case lookupFM home_map hs of {
- Just path -> mkHomeModuleLocn mod_name (path ++ '/':basename) hs;
+ -- special case to avoid getting "./foo.hs" all the time
+ Just "." -> mkHomeModuleLocn mod_name basename hs;
+ Just path -> mkHomeModuleLocn mod_name
+ (path ++ '/':basename) (path ++ '/':hs);
Nothing ->
case lookupFM home_map lhs of {
- Just path -> mkHomeModuleLocn mod_name (path ++ '/':basename) lhs;
+ -- special case to avoid getting "./foo.hs" all the time
+ Just "." -> mkHomeModuleLocn mod_name basename lhs;
+ Just path -> mkHomeModuleLocn mod_name
+ (path ++ '/':basename) (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
+ case lookupFM home_map hi of {
+ Just path -> mkHomeModuleLocn mod_name
+ (path ++ '/':basename) (path ++ '/':hs);
+ Nothing -> do
+
+ -- last chance: .hi-boot-<ver> and .hi-boot
+ let hi_boot = basename ++ ".hi-boot"
+ let hi_boot_ver = basename ++ ".hi-boot-" ++ cHscIfaceFileVersion
+ case lookupFM home_map hi_boot_ver of {
+ Just path -> mkHomeModuleLocn mod_name
+ (path ++ '/':basename) (path ++ '/':hs);
+ Nothing -> do
+ case lookupFM home_map hi_boot of {
+ Just path -> mkHomeModuleLocn mod_name
+ (path ++ '/':basename) (path ++ '/':hs);
Nothing -> return 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
+-- two differ (see summariseFile in compMan/CompManager.lhs).
mkHomeModuleLocn mod_name basename source_fn = do
ohi <- readIORef v_Output_hi
hisuf <- readIORef v_Hi_suf
let hifile = case ohi of
- Nothing -> basename ++ '.':hisuf
+ Nothing -> getdir basename
+ ++ '/':moduleNameUserString mod_name
+ ++ '.':hisuf
Just fn -> fn
-- figure out the .o file name. It also lives in the same dir
return (Just (mkHomeModule mod_name,
ModuleLocation{
- hs_file = source_fn,
- hi_file = hifile,
- obj_file = o_file
+ ml_hspp_file = Nothing,
+ ml_hs_file = Just source_fn,
+ ml_hi_file = Just hifile,
+ ml_obj_file = Just o_file
}
))
-newPkgCache :: [Package] -> IO (FiniteMap String (PackageName, FilePath))
+newPkgCache :: [PackageConfig] -> IO (FiniteMap String (PackageName, FilePath))
newPkgCache pkgs = do
let extendFM fm pkg = do
let dirs = import_dirs pkg
pkg_name = _PK_ (name pkg)
let addDir fm dir = do
contents <- getDirectoryContents' dir
- let clean_contents = filter isUsefulFile contents
- return (addListToFM fm (zip clean_contents
+ return (addListToFM fm (zip contents
(repeat (pkg_name,dir))))
foldM addDir fm dirs
then return "hi"
else return (tag ++ "_hi")
- let basename = moduleNameString mod_name
+ let basename = moduleNameUserString mod_name
hi = basename ++ '.':package_hisuf
case lookupFM pkg_cache hi of
Just (pkg_name,path) ->
return (Just (mkModule mod_name pkg_name,
ModuleLocation{
- hs_file = "error:_package_module;_no_source",
- hi_file = path ++ '/':hi,
- obj_file = "error:_package_module;_no_object"
+ ml_hspp_file = Nothing,
+ ml_hs_file = Nothing,
+ ml_hi_file = Just (path ++ '/':hi),
+ ml_obj_file = Nothing
}
))
("WARNING: error while reading directory " ++ d)
return []
)
-
+
\end{code}
projects / ghc-hetmet.git / blobdiff