-- * Loading\/compiling the program
depanal,
load, LoadHowMuch(..), SuccessFlag(..), -- also does depanal
+ loadMsgs,
workingDirectoryChanged,
+ checkModule, CheckedModule(..),
-- * Inspecting the module structure of the program
ModuleGraph, ModSummary(..),
ModuleInfo,
getModuleInfo,
modInfoTyThings,
+ modInfoTopLevelScope,
lookupName,
- allNamesInScope,
-- * Interactive evaluation
getBindings, getPrintUnqual,
#ifdef GHCI
setContext, getContext,
+ getNamesInScope,
moduleIsInterpreted,
getInfo, GetInfoResult,
exprType,
#endif
import Packages ( initPackages )
+import NameSet ( NameSet, nameSetToList )
import RdrName ( GlobalRdrEnv )
import HsSyn ( HsModule, LHsBinds )
import Type ( Kind, Type, dropForAlls )
data LoadHowMuch
= LoadAllTargets
| LoadUpTo Module
+ | LoadDependenciesOf Module
-- | Try to load the program. If a Module is supplied, then just
-- attempt to load up to this target. If no Module is supplied,
-- then try to load all targets.
load :: Session -> LoadHowMuch -> IO SuccessFlag
-load s@(Session ref) how_much
+load session how_much =
+ loadMsgs session how_much ErrUtils.printErrorsAndWarnings
+
+-- | Version of 'load' that takes a callback function to be invoked
+-- on compiler errors and warnings as they occur during compilation.
+loadMsgs :: Session -> LoadHowMuch -> (Messages-> IO ()) -> IO SuccessFlag
+loadMsgs s@(Session ref) how_much msg_act
= do
-- Dependency analysis first. Note that this fixes the module graph:
-- even if we don't get a fully successful upsweep, the full module
maybe_top_mod = case how_much of
LoadUpTo m -> Just m
+ LoadDependenciesOf m -> Just m
_ -> Nothing
- partial_mg :: [SCC ModSummary]
- partial_mg = topSortModuleGraph False mod_graph maybe_top_mod
-
+ partial_mg0 :: [SCC ModSummary]
+ partial_mg0 = topSortModuleGraph False mod_graph maybe_top_mod
+
+ -- LoadDependenciesOf m: we want the upsweep to stop just
+ -- short of the specified module (unless the specified module
+ -- is stable).
+ partial_mg
+ | LoadDependenciesOf mod <- how_much
+ = ASSERT( case last partial_mg0 of
+ AcyclicSCC ms -> ms_mod ms == mod; _ -> False )
+ List.init partial_mg0
+ | otherwise
+ = partial_mg0
+
stable_mg =
[ AcyclicSCC ms
| AcyclicSCC ms <- full_mg,
(upsweep_ok, hsc_env1, modsUpswept)
<- upsweep (hsc_env { hsc_HPT = emptyHomePackageTable })
- pruned_hpt stable_mods cleanup mg
+ pruned_hpt stable_mods cleanup msg_act mg
-- Make modsDone be the summaries for each home module now
-- available; this should equal the domain of hpt3.
-- source file, but that doesn't do any harm.
ppFilesFromSummaries summaries = [ fn | Just fn <- map ms_hspp_file summaries ]
------------------------------------------------------------------------------
+-- -----------------------------------------------------------------------------
+-- Check module
+
+data CheckedModule =
+ CheckedModule { parsedSource :: ParsedSource,
+ -- ToDo: renamedSource
+ typecheckedSource :: Maybe TypecheckedSource,
+ checkedModuleInfo :: Maybe ModuleInfo
+ }
+
+type ParsedSource = Located (HsModule RdrName)
+type TypecheckedSource = LHsBinds Id
+
+-- | This is the way to get access to parsed and typechecked source code
+-- for a module. 'checkModule' loads all the dependencies of the specified
+-- module in the Session, and then attempts to typecheck the module. If
+-- successful, it returns the abstract syntax for the module.
+checkModule :: Session -> Module -> (Messages -> IO ())
+ -> IO (Maybe CheckedModule)
+checkModule session@(Session ref) mod msg_act = do
+ -- load up the dependencies first
+ r <- loadMsgs session (LoadDependenciesOf mod) msg_act
+ if (failed r) then return Nothing else do
+
+ -- now parse & typecheck the module
+ hsc_env <- readIORef ref
+ let mg = hsc_mod_graph hsc_env
+ case [ ms | ms <- mg, ms_mod ms == mod ] of
+ [] -> return Nothing
+ (ms:_) -> do
+ r <- hscFileCheck hsc_env msg_act ms
+ case r of
+ HscFail ->
+ return Nothing
+ HscChecked parsed Nothing ->
+ return (Just (CheckedModule parsed Nothing Nothing))
+ HscChecked parsed (Just (tc_binds, rdr_env, details)) -> do
+ let minf = ModuleInfo {
+ minf_details = details,
+ minf_rdr_env = Just rdr_env
+ }
+ return (Just (CheckedModule {
+ parsedSource = parsed,
+ typecheckedSource = Just tc_binds,
+ checkedModuleInfo = Just minf }))
+
+-- ---------------------------------------------------------------------------
-- Unloading
unload :: HscEnv -> [Linkable] -> IO ()
-> HomePackageTable -- HPT from last time round (pruned)
-> ([Module],[Module]) -- stable modules (see checkStability)
-> IO () -- How to clean up unwanted tmp files
+ -> (Messages -> IO ()) -- Compiler error message callback
-> [SCC ModSummary] -- Mods to do (the worklist)
-> IO (SuccessFlag,
HscEnv, -- With an updated HPT
[ModSummary]) -- Mods which succeeded
-upsweep hsc_env old_hpt stable_mods cleanup
+upsweep hsc_env old_hpt stable_mods cleanup msg_act
[]
= return (Succeeded, hsc_env, [])
-upsweep hsc_env old_hpt stable_mods cleanup
+upsweep hsc_env old_hpt stable_mods cleanup msg_act
(CyclicSCC ms:_)
= do putMsg (showSDoc (cyclicModuleErr ms))
return (Failed, hsc_env, [])
-upsweep hsc_env old_hpt stable_mods cleanup
+upsweep hsc_env old_hpt stable_mods cleanup msg_act
(AcyclicSCC mod:mods)
= do -- putStrLn ("UPSWEEP_MOD: hpt = " ++
-- show (map (moduleUserString.moduleName.mi_module.hm_iface)
-- (moduleEnvElts (hsc_HPT hsc_env)))
- mb_mod_info <- upsweep_mod hsc_env old_hpt stable_mods mod
+ mb_mod_info <- upsweep_mod hsc_env old_hpt stable_mods msg_act mod
cleanup -- Remove unwanted tmp files between compilations
| otherwise = delModuleEnv old_hpt this_mod
; (restOK, hsc_env2, modOKs)
- <- upsweep hsc_env1 old_hpt1 stable_mods cleanup mods
+ <- upsweep hsc_env1 old_hpt1 stable_mods cleanup
+ msg_act mods
; return (restOK, hsc_env2, mod:modOKs)
}
upsweep_mod :: HscEnv
-> HomePackageTable
-> ([Module],[Module])
+ -> (Messages -> IO ())
-> ModSummary
-> IO (Maybe HomeModInfo) -- Nothing => Failed
-upsweep_mod hsc_env old_hpt (stable_obj, stable_bco) summary
+upsweep_mod hsc_env old_hpt (stable_obj, stable_bco) msg_act summary
= do
let
this_mod = ms_mod summary
hs_date = ms_hs_date summary
compile_it :: Maybe Linkable -> IO (Maybe HomeModInfo)
- compile_it = upsweep_compile hsc_env old_hpt this_mod summary
+ compile_it = upsweep_compile hsc_env old_hpt this_mod
+ msg_act summary
case ghcMode (hsc_dflags hsc_env) of
BatchCompile ->
old_hmi = lookupModuleEnv old_hpt this_mod
-- Run hsc to compile a module
-upsweep_compile hsc_env old_hpt this_mod summary mb_old_linkable = do
+upsweep_compile hsc_env old_hpt this_mod msg_act summary mb_old_linkable = do
let
-- The old interface is ok if it's in the old HPT
-- a) we're compiling a source file, and the old HPT
where
iface = hm_iface hm_info
- compresult <- compile hsc_env summary mb_old_linkable mb_old_iface
+ compresult <- compile hsc_env msg_act summary mb_old_linkable mb_old_iface
case compresult of
-- Compilation failed. Compile may still have updated the PCS, tho.
-- ToDo: should return error messages
#endif
-allNamesInScope :: Session -> IO [Name]
-allNamesInScope s = withSession s $ \hsc_env -> do
- eps <- readIORef (hsc_EPS hsc_env)
- return (map gre_name (globalRdrEnvElts (ic_rn_gbl_env (hsc_IC hsc_env))))
-
-- | Returns the 'TyThing' for a 'Name'. The 'Name' may refer to any
-- entity known to GHC, including 'Name's defined using 'runStmt'.
lookupName :: Session -> Name -> IO (Maybe TyThing)
return $! lookupType (hsc_HPT hsc_env) (eps_PTE eps) name
-- | Container for information about a 'Module'.
-newtype ModuleInfo = ModuleInfo ModDetails
+data ModuleInfo = ModuleInfo {
+ minf_details :: ModDetails,
+ minf_rdr_env :: Maybe GlobalRdrEnv
+ }
-- ToDo: this should really contain the ModIface too
-- We don't want HomeModInfo here, because a ModuleInfo applies
-- to package modules too.
getModuleInfo s mdl = withSession s $ \hsc_env -> do
case lookupModuleEnv (hsc_HPT hsc_env) mdl of
Nothing -> return Nothing
- Just hmi -> return (Just (ModuleInfo (hm_details hmi)))
+ Just hmi ->
+ return (Just (ModuleInfo {
+ minf_details = hm_details hmi,
+ minf_rdr_env = mi_globals $! hm_iface hmi
+ }))
+
-- ToDo: we should be able to call getModuleInfo on a package module,
-- even one that isn't loaded yet.
-- | The list of top-level entities defined in a module
modInfoTyThings :: ModuleInfo -> [TyThing]
-modInfoTyThings (ModuleInfo md) = typeEnvElts (md_types md)
+modInfoTyThings minf = typeEnvElts (md_types (minf_details minf))
+
+modInfoTopLevelScope :: ModuleInfo -> Maybe [Name]
+modInfoTopLevelScope minf
+ = fmap (map gre_name . globalRdrEnvElts) (minf_rdr_env minf)
+
+modInfoExports :: ModuleInfo -> [Name]
+modInfoExports minf = nameSetToList $! (md_exports $! minf_details minf)
isDictonaryId :: Id -> Bool
isDictonaryId id
getInfo :: Session -> String -> IO [GetInfoResult]
getInfo s id = withSession s $ \hsc_env -> hscGetInfo hsc_env id
+-- | Returns all names in scope in the current interactive context
+getNamesInScope :: Session -> IO [Name]
+getNamesInScope s = withSession s $ \hsc_env -> do
+ return (map gre_name (globalRdrEnvElts (ic_rn_gbl_env (hsc_IC hsc_env))))
+
-- -----------------------------------------------------------------------------
-- Getting the type of an expression
projects / ghc-hetmet.git / blobdiff