\begin{code}
module CompManager ( cmInit, cmLoadModule,
+#ifdef GHCI
cmGetExpr, cmRunExpr,
+#endif
CmState, emptyCmState -- abstract
)
where
import CmLink
import CmTypes
import HscTypes
-import HscMain ( hscExpr )
-import Interpreter ( HValue )
import Module ( ModuleName, moduleName,
isModuleInThisPackage, moduleEnvElts,
moduleNameUserString )
import HscTypes ( HomeSymbolTable, HomeIfaceTable,
PersistentCompilerState, ModDetails(..) )
import Name ( lookupNameEnv )
-import RdrName
import Module
import PrelNames ( mainName )
import HscMain ( initPersistentCompilerState )
-import Finder ( findModule, emptyHomeDirCache )
+import Finder
import UniqFM ( emptyUFM, lookupUFM, addToUFM, delListFromUFM,
UniqFM, listToUFM )
import Unique ( Uniquable )
import Digraph ( SCC(..), stronglyConnComp )
+import DriverPhases
import DriverUtil ( BarfKind(..), splitFilename3 )
-import CmdLineOpts ( DynFlags )
import Util
import Outputable
import Panic ( panic )
+#ifdef GHCI
+import CmdLineOpts ( DynFlags )
+import Interpreter ( HValue )
+import HscMain ( hscExpr )
+import RdrName
+import PrelGHC ( unsafeCoerce# )
+#endif
+
-- lang
import Exception ( throwDyn )
import IO
import List ( nub )
import Maybe ( catMaybes, fromMaybe, isJust )
-import PrelGHC ( unsafeCoerce# )
\end{code}
cmInit raw_package_info gmode
= emptyCmState raw_package_info gmode
+#ifdef GHCI
cmGetExpr :: CmState
-> DynFlags
-> ModuleName
cmRunExpr hval
= do unsafeCoerce# hval :: IO ()
-- putStrLn "done."
+#endif
-- Persistent state just for CM, excluding link & compile subsystems
data PersistentCMState
\begin{code}
cmLoadModule :: CmState
- -> ModuleName
- -> IO (CmState, Maybe ModuleName)
+ -> FilePath
+ -> IO (CmState, -- new state
+ Bool, -- was successful
+ [ModuleName]) -- list of modules loaded
cmLoadModule cmstate1 rootname
= do -- version 1's are the original, before downsweep
let pcii = pci pcms1 -- this never changes
let ghci_mode = gmode pcms1 -- ToDo: fix!
- -- During upsweep, look at new summaries to see if source has
- -- changed. Here's a function to pass down; it takes a new
- -- summary.
- let source_changed :: ModSummary -> Bool
- source_changed = summary_indicates_source_changed mg1
-
-- Do the downsweep to reestablish the module graph
-- then generate version 2's by removing from HIT,HST,UI any
-- modules in the old MG which are not in the new one.
let threaded2 = CmThreaded pcs1 hst2 hit2
(upsweep_complete_success, threaded3, modsDone, newLis)
- <- upsweep_mods ghci_mode ui2 reachable_from source_changed threaded2 mg2
+ <- upsweep_mods ghci_mode ui2 reachable_from threaded2 mg2
let ui3 = add_to_ui ui2 newLis
let (CmThreaded pcs3 hst3 hit3) = threaded3
pci=pcii, gmode=ghci_mode }
let cmstate3
= CmState { pcms=pcms3, pcs=pcs3, pls=pls3 }
- return (cmstate3, Just rootname)
+ return (cmstate3, True, map name_of_summary modsDone)
else
-- Tricky. We need to back out the effects of compiling any
pci=pcii, gmode=ghci_mode }
let cmstate4
= CmState { pcms=pcms4, pcs=pcs3, pls=pls4 }
- return (cmstate4,
- -- choose rather arbitrarily who to return
- if null mods_to_keep then Nothing
- else Just (last mods_to_keep_names))
-
-
--- Given a bunch of old summaries and a new summary, try and
--- find the corresponding old summary, and, if found, compare
--- its source timestamp with that of the new summary. If in
--- doubt say True.
-summary_indicates_source_changed :: [ModSummary] -> ModSummary -> Bool
-summary_indicates_source_changed old_summaries new_summary
- = panic "SISC"
-#if 0
- = case [old | old <- old_summaries,
- name_of_summary old == name_of_summary new_summary] of
-
- (_:_:_) -> panic "summary_indicates_newer_source"
-
- [] -> -- can't find a corresponding old summary, so
- -- compare source and iface dates in the new summary.
- trace (showSDoc (text "SISC: no old summary, new ="
- <+> pprSummaryTimes new_summary)) (
- case (ms_hs_date new_summary, ms_hi_date new_summary) of
- (Just hs_t, Just hi_t) -> hs_t > hi_t
- other -> True
- )
-
- [old] -> -- found old summary; compare source timestamps
- trace (showSDoc (text "SISC: old ="
- <+> pprSummaryTimes old
- <+> pprSummaryTimes new_summary)) (
- case (ms_hs_date old, ms_hs_date new_summary) of
- (Just old_t, Just new_t) -> new_t > old_t
- other -> True
- )
-#endif
+ return (cmstate4, False, mods_to_keep_names)
-- Return (names of) all those in modsDone who are part of a cycle
upsweep_mods :: GhciMode
-> UnlinkedImage -- old linkables
-> (ModuleName -> [ModuleName]) -- to construct downward closures
- -> (ModSummary -> Bool) -- has source changed?
-> CmThreaded -- PCS & HST & HIT
-> [SCC ModSummary] -- mods to do (the worklist)
-- ...... RETURNING ......
[ModSummary], -- mods which succeeded
[Linkable]) -- new linkables
-upsweep_mods ghci_mode oldUI reachable_from source_changed threaded
+upsweep_mods ghci_mode oldUI reachable_from threaded
[]
= return (True, threaded, [], [])
-upsweep_mods ghci_mode oldUI reachable_from source_changed threaded
+upsweep_mods ghci_mode oldUI reachable_from threaded
((CyclicSCC ms):_)
= do hPutStrLn stderr ("ghc: module imports form a cycle for modules:\n\t" ++
unwords (map (moduleNameUserString.name_of_summary) ms))
return (False, threaded, [], [])
-upsweep_mods ghci_mode oldUI reachable_from source_changed threaded
+upsweep_mods ghci_mode oldUI reachable_from threaded
((AcyclicSCC mod):mods)
= do (threaded1, maybe_linkable)
<- upsweep_mod ghci_mode oldUI threaded mod
(reachable_from (name_of_summary mod))
- (source_changed mod)
case maybe_linkable of
Just linkable
-> -- No errors; do the rest
do (restOK, threaded2, modOKs, linkables)
<- upsweep_mods ghci_mode oldUI reachable_from
- source_changed threaded1 mods
+ threaded1 mods
return (restOK, threaded2, mod:modOKs, linkable:linkables)
Nothing -- we got a compilation error; give up now
-> return (False, threaded1, [], [])
-> CmThreaded
-> ModSummary
-> [ModuleName]
- -> Bool
-> IO (CmThreaded, Maybe Linkable)
-upsweep_mod ghci_mode oldUI threaded1 summary1
- reachable_from_here source_might_have_changed
+upsweep_mod ghci_mode oldUI threaded1 summary1 reachable_from_here
= do let mod_name = name_of_summary summary1
let (CmThreaded pcs1 hst1 hit1) = threaded1
let old_iface = lookupUFM hit1 (name_of_summary summary1)
+ -- We *have* to compile it if we're in batch mode and we can't see
+ -- a previous linkable for it on disk.
+ compilation_mandatory
+ <- if ghci_mode /= Batch then return False
+ else case ml_obj_file (ms_location summary1) of
+ Nothing -> do --putStrLn "cmcm: object?!"
+ return True
+ Just obj_fn -> do --putStrLn ("cmcm: old obj " ++ obj_fn)
+ b <- doesFileExist obj_fn
+ return (not b)
+
let maybe_oldUI_linkable = findModuleLinkable_maybe oldUI mod_name
maybe_oldDisk_linkable
<- case ml_obj_file (ms_location summary1) of
-- Chase downwards from the specified root set, returning summaries
-- for all home modules encountered. Only follow source-import
-- links.
-downsweep :: [ModuleName] -> IO [ModSummary]
+downsweep :: [FilePath] -> IO [ModSummary]
downsweep rootNm
- = do rootSummaries <- mapM getSummary rootNm
+ = do rootSummaries <- mapM getRootSummary rootNm
loop (filter (isModuleInThisPackage.ms_mod) rootSummaries)
where
+ getRootSummary :: FilePath -> IO ModSummary
+ getRootSummary file
+ | haskellish_file file
+ = do exists <- doesFileExist file
+ if exists then summariseFile file
+ else getSummary (mkModuleName file)
+ -- ToDo: should check import paths
+ | otherwise
+ = getSummary (mkModuleName file)
+
getSummary :: ModuleName -> IO ModSummary
getSummary nm
| trace ("getSummary: "++ showSDoc (ppr nm)) True
else loop (newHomeSummaries ++ homeSummaries)
+-----------------------------------------------------------------------------
+-- Summarising modules
+
+-- We have two types of summarisation:
+--
+-- * Summarise a file. This is used for the root module passed to
+-- cmLoadModule. The file is read, and used to determine the root
+-- module name. The module name may differ from the filename.
+--
+-- * Summarise a module. We are given a module name, and must provide
+-- a summary. The finder is used to locate the file in which the module
+-- resides.
+
+summariseFile :: FilePath -> IO ModSummary
+summariseFile file
+ = do hspp_fn <- preprocess file
+ modsrc <- readFile hspp_fn
+
+ let (srcimps,imps,mod_name) = getImports modsrc
+ (path, basename, ext) = splitFilename3 file
+
+ Just (mod, location)
+ <- mkHomeModuleLocn mod_name (path ++ '/':basename) file
+
+ maybe_src_timestamp
+ <- case ml_hs_file location of
+ Nothing -> return Nothing
+ Just src_fn -> maybe_getModificationTime src_fn
+
+ return (ModSummary mod
+ location{ml_hspp_file=Just hspp_fn}
+ srcimps imps
+ maybe_src_timestamp)
+
-- Summarise a module, and pick up source and interface timestamps.
summarise :: Module -> ModuleLocation -> IO ModSummary
summarise mod location
Nothing -> return Nothing
Just src_fn -> maybe_getModificationTime src_fn
- -- If the module name is Main, allow it to be in a file
- -- different from Main.hs, and mash the mod and loc
- -- to match. Otherwise just moan.
- (mashed_mod, mashed_loc)
- <- case () of
- () | mod_name == moduleName mod
- -> return (mod, location)
- | mod_name /= moduleName mod && mod_name == mkModuleName "Main"
- -> return (mash mod location "Main")
- | otherwise
- -> do hPutStrLn stderr (showSDoc (
- text "ghc: warning: file name - module name mismatch:" <+>
- ppr (moduleName mod) <+> text "vs" <+> ppr mod_name))
- return (mash mod location (moduleNameUserString (moduleName mod)))
- where
- mash old_mod old_loc new_nm
- = (mkHomeModule (mkModuleName new_nm),
- old_loc{ml_hi_file = maybe_swizzle_basename new_nm
- (ml_hi_file old_loc)})
-
- maybe_swizzle_basename new Nothing = Nothing
- maybe_swizzle_basename new (Just old)
- = case splitFilename3 old of
- (dir, name, ext) -> Just (dir ++ new ++ ext)
-
- return (ModSummary mashed_mod
- mashed_loc{ml_hspp_file=Just hspp_fn}
- srcimps imps
- maybe_src_timestamp)
+ if mod_name == moduleName mod
+ then return ()
+ else throwDyn (OtherError
+ (showSDoc (text "file name does not match module name: "
+ <+> ppr (moduleName mod) <+> text "vs"
+ <+> ppr mod_name)))
+
+ return (ModSummary mod location{ml_hspp_file=Just hspp_fn}
+ srcimps imps
+ maybe_src_timestamp)
| otherwise
= return (ModSummary mod location [] [] Nothing)
- where
- maybe_getModificationTime :: FilePath -> IO (Maybe ClockTime)
- maybe_getModificationTime fn
- = (do time <- getModificationTime fn
- return (Just time))
- `catch`
- (\err -> return Nothing)
+maybe_getModificationTime :: FilePath -> IO (Maybe ClockTime)
+maybe_getModificationTime fn
+ = (do time <- getModificationTime fn
+ return (Just time))
+ `catch`
+ (\err -> return Nothing)
\end{code}
projects / ghc-hetmet.git / blobdiff