-- * Loading\/compiling the program
depanal,
load, LoadHowMuch(..), SuccessFlag(..), -- also does depanal
+ loadMsgs,
workingDirectoryChanged,
+ checkModule, CheckedModule(..),
+ TypecheckedSource, ParsedSource, RenamedSource,
-- * Inspecting the module structure of the program
ModuleGraph, ModSummary(..),
ModuleInfo,
getModuleInfo,
modInfoTyThings,
- lookupName,
- allNamesInScope,
+ modInfoTopLevelScope,
+ modInfoPrintUnqualified,
+ modInfoExports,
+ lookupGlobalName,
-- * Interactive evaluation
getBindings, getPrintUnqual,
#ifdef GHCI
setContext, getContext,
+ getNamesInScope,
moduleIsInterpreted,
getInfo, GetInfoResult,
exprType,
browseModule,
showModule,
compileExpr, HValue,
+ lookupName,
#endif
-- * Abstract syntax elements
-- ** Entities
TyThing(..),
+ -- ** Syntax
+ module HsSyn, -- ToDo: remove extraneous bits
+
-- * Exceptions
GhcException(..), showGhcException,
{-
ToDo:
- * return error messages rather than printing them.
* inline bits of HscMain here to simplify layering: hscGetInfo,
hscTcExpr, hscStmt.
- * implement second argument to load.
* we need to expose DynFlags, so should parseDynamicFlags really be
part of this interface?
* what StaticFlags should we expose, if any?
import qualified Linker
import Linker ( HValue, extendLinkEnv )
import NameEnv ( lookupNameEnv )
-import TcRnDriver ( mkExportEnv, getModuleContents, tcRnLookupRdrName )
+import TcRnDriver ( mkExportEnv, getModuleContents, tcRnLookupRdrName,
+ getModuleExports )
import RdrName ( plusGlobalRdrEnv )
import HscMain ( hscGetInfo, GetInfoResult, hscParseIdentifier,
hscStmt, hscTcExpr, hscKcType )
#endif
import Packages ( initPackages )
+import NameSet ( NameSet, nameSetToList )
import RdrName ( GlobalRdrEnv )
-import HsSyn ( HsModule, LHsBinds )
+import HsSyn
import Type ( Kind, Type, dropForAlls )
import Id ( Id, idType, isImplicitId, isDeadBinder,
isSpecPragmaId, isExportedId, isLocalId, isGlobalId,
import TyCon ( TyCon, isClassTyCon, isSynTyCon, isNewTyCon )
import Class ( Class, classSCTheta, classTvsFds )
import DataCon ( DataCon )
+import InstEnv ( Instance )
import Name ( Name, getName, nameModule_maybe )
import RdrName ( RdrName, gre_name, globalRdrEnvElts )
import NameEnv ( nameEnvElts )
-import SrcLoc ( Located(..) )
+import SrcLoc ( Located(..), mkSrcLoc, srcLocSpan )
import DriverPipeline
import DriverPhases ( Phase(..), isHaskellSrcFilename, startPhase )
import GetImports ( getImports )
import BasicTypes ( SuccessFlag(..), succeeded, failed )
import Maybes ( orElse, expectJust, mapCatMaybes )
import TcType ( tcSplitSigmaTy, isDictTy )
+import Bag ( unitBag, emptyBag )
+import FastString ( mkFastString )
import Directory ( getModificationTime, doesFileExist )
import Maybe ( isJust, isNothing, fromJust, fromMaybe, catMaybes )
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,
+ renamedSource :: Maybe RenamedSource,
+ typecheckedSource :: Maybe TypecheckedSource,
+ checkedModuleInfo :: Maybe ModuleInfo
+ }
+
+type ParsedSource = Located (HsModule RdrName)
+type RenamedSource = HsGroup Name
+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
+ -- Add in the OPTIONS from the source file This is nasty:
+ -- we've done this once already, in the compilation manager
+ -- It might be better to cache the flags in the
+ -- ml_hspp_file field, say
+ let dflags0 = hsc_dflags hsc_env
+ hspp_buf = expectJust "GHC.checkModule" (ms_hspp_buf ms)
+ opts = getOptionsFromStringBuffer hspp_buf
+ (dflags1,leftovers) <- parseDynamicFlags dflags0 (map snd opts)
+ if (not (null leftovers))
+ then do let filename = fromJust (ml_hs_file (ms_location ms))
+ msg_act (optionsErrorMsgs leftovers opts filename)
+ return Nothing
+ else do
+
+ r <- hscFileCheck hsc_env{hsc_dflags=dflags1} msg_act ms
+ case r of
+ HscFail ->
+ return Nothing
+ HscChecked parsed renamed Nothing ->
+ return (Just (CheckedModule {
+ parsedSource = parsed,
+ renamedSource = renamed,
+ typecheckedSource = Nothing,
+ checkedModuleInfo = Nothing }))
+ HscChecked parsed renamed
+ (Just (tc_binds, rdr_env, details)) -> do
+ let minf = ModuleInfo {
+ minf_type_env = md_types details,
+ minf_exports = md_exports details,
+ minf_rdr_env = Just rdr_env
+ }
+ return (Just (CheckedModule {
+ parsedSource = parsed,
+ renamedSource = renamed,
+ 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 mods
+ = upsweep' hsc_env old_hpt stable_mods cleanup msg_act mods 1 (length mods)
+
+upsweep' hsc_env old_hpt stable_mods cleanup msg_act
+ [] _ _
= return (Succeeded, hsc_env, [])
-upsweep hsc_env old_hpt stable_mods cleanup
- (CyclicSCC ms:_)
+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
- (AcyclicSCC mod:mods)
+upsweep' hsc_env old_hpt stable_mods cleanup msg_act
+ (AcyclicSCC mod:mods) mod_index nmods
= 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
+ mod_index nmods
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 (mod_index+1) nmods
; return (restOK, hsc_env2, mod:modOKs)
}
upsweep_mod :: HscEnv
-> HomePackageTable
-> ([Module],[Module])
+ -> (Messages -> IO ())
-> ModSummary
+ -> Int -- index of module
+ -> Int -- total number of modules
-> 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 mod_index nmods
= 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 mod_index nmods
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
+ mod_index nmods
+ 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
- -- entry is for a source file
+ -- entry is for a source file
-- b) we're compiling a hs-boot file
-- Case (b) allows an hs-boot file to get the interface of its
-- real source file on the second iteration of the compilation
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
+ mod_index nmods
case compresult of
-- Compilation failed. Compile may still have updated the PCS, tho.
let
local_opts = getOptionsFromStringBuffer buf
--
- (dflags', errs) <- parseDynamicFlags dflags local_opts
+ (dflags', errs) <- parseDynamicFlags dflags (map snd local_opts)
let
needs_preprocessing
when needs_preprocessing $
ghcError (ProgramError "buffer needs preprocesing; interactive check disabled")
- return (dflags', "<buffer>", buf)
+ return (dflags', src_fn, buf)
-----------------------------------------------------------------------------
getPrintUnqual :: Session -> IO PrintUnqualified
getPrintUnqual s = withSession s (return . icPrintUnqual . hsc_IC)
-#ifdef GHCI
--- | Parses a string as an identifier, and returns the list of 'Name's that
--- the identifier can refer to in the current interactive context.
-parseName :: Session -> String -> IO [Name]
-parseName s str = withSession s $ \hsc_env -> do
- maybe_rdr_name <- hscParseIdentifier (hsc_dflags hsc_env) str
- case maybe_rdr_name of
- Nothing -> return []
- Just (L _ rdr_name) -> do
- mb_names <- tcRnLookupRdrName hsc_env rdr_name
- case mb_names of
- Nothing -> return []
- Just ns -> return ns
- -- 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)
-lookupName s name = withSession s $ \hsc_env -> do
- case lookupTypeEnv (ic_type_env (hsc_IC hsc_env)) name of
- Just tt -> return (Just tt)
- Nothing -> do
- eps <- readIORef (hsc_EPS hsc_env)
- return $! lookupType (hsc_HPT hsc_env) (eps_PTE eps) name
-
-- | Container for information about a 'Module'.
-newtype ModuleInfo = ModuleInfo ModDetails
+data ModuleInfo = ModuleInfo {
+ minf_type_env :: TypeEnv,
+ minf_exports :: NameSet,
+ 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 :: Session -> Module -> IO (Maybe ModuleInfo)
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)))
+ Nothing -> do
+#ifdef GHCI
+ mb_names <- getModuleExports hsc_env mdl
+ case mb_names of
+ Nothing -> return Nothing
+ Just names -> do
+ eps <- readIORef (hsc_EPS hsc_env)
+ let pte = eps_PTE eps
+ tys = [ ty | name <- nameSetToList names,
+ Just ty <- [lookupTypeEnv pte name] ]
+ return (Just (ModuleInfo {
+ minf_type_env = mkTypeEnv tys,
+ minf_exports = names,
+ minf_rdr_env = Nothing
+ }))
+#else
+ -- bogusly different for non-GHCI (ToDo)
+ return Nothing
+#endif
+ Just hmi ->
+ let details = hm_details hmi in
+ return (Just (ModuleInfo {
+ minf_type_env = md_types details,
+ minf_exports = md_exports details,
+ 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 (minf_type_env minf)
+
+modInfoTopLevelScope :: ModuleInfo -> Maybe [Name]
+modInfoTopLevelScope minf
+ = fmap (map gre_name . globalRdrEnvElts) (minf_rdr_env minf)
+
+modInfoExports :: ModuleInfo -> [Name]
+modInfoExports minf = nameSetToList $! minf_exports minf
+
+modInfoPrintUnqualified :: ModuleInfo -> Maybe PrintUnqualified
+modInfoPrintUnqualified minf = fmap unQualInScope (minf_rdr_env minf)
isDictonaryId :: Id -> Bool
isDictonaryId id
= case tcSplitSigmaTy (idType id) of { (tvs, theta, tau) -> isDictTy tau }
+-- | Looks up a global name: that is, any top-level name in any
+-- visible module. Unlike 'lookupName', lookupGlobalName does not use
+-- the interactive context, and therefore does not require a preceding
+-- 'setContext'.
+lookupGlobalName :: Session -> Name -> IO (Maybe TyThing)
+lookupGlobalName s name = withSession s $ \hsc_env -> do
+ eps <- readIORef (hsc_EPS hsc_env)
+ return $! lookupType (hsc_HPT hsc_env) (eps_PTE eps) name
+
#if 0
data ObjectCode
= ByteCode
| BinaryCode FilePath
-type TypecheckedCode = HsTypecheckedGroup
-type RenamedCode = [HsGroup Name]
-
-- ToDo: typechecks abstract syntax or renamed abstract syntax. Issues:
-- - typechecked syntax includes extra dictionary translation and
-- AbsBinds which need to be translated back into something closer to
-- the original source.
--- - renamed syntax currently doesn't exist in a single blob, since
--- renaming and typechecking are interleaved at splice points. We'd
--- need a restriction that there are no splices in the source module.
-- ToDo:
-- - Data and Typeable instances for HsSyn.
-- :browse will use either lm_toplev or inspect lm_interface, depending
-- on whether the module is interpreted or not.
--- various abstract syntax types (perhaps IfaceBlah)
-data Type = ...
-data Kind = ...
-
-- This is for reconstructing refactored source code
-- Calls the lexer repeatedly.
-- ToDo: add comment tokens to token stream
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))))
+
+-- | Parses a string as an identifier, and returns the list of 'Name's that
+-- the identifier can refer to in the current interactive context.
+parseName :: Session -> String -> IO [Name]
+parseName s str = withSession s $ \hsc_env -> do
+ maybe_rdr_name <- hscParseIdentifier (hsc_dflags hsc_env) str
+ case maybe_rdr_name of
+ Nothing -> return []
+ Just (L _ rdr_name) -> do
+ mb_names <- tcRnLookupRdrName hsc_env rdr_name
+ case mb_names of
+ Nothing -> return []
+ Just ns -> return ns
+ -- ToDo: should return error messages
+
+-- | 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)
+lookupName s name = withSession s $ \hsc_env -> do
+ case lookupTypeEnv (ic_type_env (hsc_IC hsc_env)) name of
+ Just tt -> return (Just tt)
+ Nothing -> do
+ eps <- readIORef (hsc_EPS hsc_env)
+ return $! lookupType (hsc_HPT hsc_env) (eps_PTE eps) name
+
-- -----------------------------------------------------------------------------
-- Getting the type of an expression
projects / ghc-hetmet.git / blobdiff