X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FHscMain.lhs;h=e170f8fa31f351739aa92ccd39ec4b55d9ba1f24;hb=d7d596d039b48dec6b71df9c4bca0d12958ecdb9;hp=0c7bb2832741394b2b882b519a0a29db2c0d20ad;hpb=550421384b8364cdaf3135f7859c9f7d7ee1fff1;p=ghc-hetmet.git diff --git a/ghc/compiler/main/HscMain.lhs b/ghc/compiler/main/HscMain.lhs index 0c7bb28..e170f8f 100644 --- a/ghc/compiler/main/HscMain.lhs +++ b/ghc/compiler/main/HscMain.lhs @@ -5,63 +5,78 @@ \section[GHC_Main]{Main driver for Glasgow Haskell compiler} \begin{code} -module HscMain ( - HscResult(..), hscMain, newHscEnv +module HscMain + ( newHscEnv, hscCmmFile + , hscFileCheck + , hscParseIdentifier #ifdef GHCI - , hscStmt, hscTcExpr, hscThing, - , compileExpr + , hscStmt, hscTcExpr, hscKcType + , compileExpr #endif - ) where + , hscCompileOneShot -- :: Compiler HscStatus + , hscCompileBatch -- :: Compiler (HscStatus, ModIface, ModDetails) + , hscCompileNothing -- :: Compiler (HscStatus, ModIface, ModDetails) + , hscCompileInteractive -- :: Compiler (InteractiveStatus, ModIface, ModDetails) + , HscStatus (..) + , InteractiveStatus (..) + , HscChecked (..) + ) where #include "HsVersions.h" #ifdef GHCI -import HsSyn ( Stmt(..), LStmt, LHsExpr ) -import IfaceSyn ( IfaceDecl ) +import HsSyn ( Stmt(..), LHsExpr, LStmt, LHsType ) +import Module ( Module ) import CodeOutput ( outputForeignStubs ) import ByteCodeGen ( byteCodeGen, coreExprToBCOs ) import Linker ( HValue, linkExpr ) -import TidyPgm ( tidyCoreExpr ) +import CoreTidy ( tidyExpr ) import CorePrep ( corePrepExpr ) import Flattening ( flattenExpr ) -import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnThing ) -import RdrName ( RdrName, GlobalRdrEnv ) +import Desugar ( deSugarExpr ) +import SimplCore ( simplifyExpr ) +import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnType ) import Type ( Type ) import PrelNames ( iNTERACTIVE ) -import StringBuffer ( stringToStringBuffer ) -import SrcLoc ( noSrcLoc, Located(..) ) -import Var ( Id ) -import Name ( Name ) +import Kind ( Kind ) import CoreLint ( lintUnfolding ) import DsMeta ( templateHaskellNames ) -import BasicTypes ( Fixity ) +import SrcLoc ( noSrcLoc ) +import VarEnv ( emptyTidyEnv ) #endif -import StringBuffer ( hGetStringBuffer ) +import Var ( Id ) +import Module ( emptyModuleEnv, ModLocation(..) ) +import RdrName ( GlobalRdrEnv, RdrName ) +import HsSyn ( HsModule, LHsBinds, HsGroup, LIE, LImportDecl ) +import SrcLoc ( Located(..) ) +import StringBuffer ( hGetStringBuffer, stringToStringBuffer ) import Parser import Lexer ( P(..), ParseResult(..), mkPState ) import SrcLoc ( mkSrcLoc ) import TcRnDriver ( tcRnModule, tcRnExtCore ) import TcIface ( typecheckIface ) +import TcRnMonad ( initIfaceCheck, TcGblEnv(..) ) import IfaceEnv ( initNameCache ) import LoadIface ( ifaceStats, initExternalPackageState ) import PrelInfo ( wiredInThings, basicKnownKeyNames ) -import RdrName ( GlobalRdrEnv ) -import MkIface ( checkOldIface, mkIface ) -import Desugar +import MkIface ( checkOldIface, mkIface, writeIfaceFile ) +import Desugar ( deSugar ) import Flattening ( flatten ) -import SimplCore -import TidyPgm ( tidyCorePgm ) +import SimplCore ( core2core ) +import TidyPgm ( tidyProgram, mkBootModDetails ) import CorePrep ( corePrepPgm ) import CoreToStg ( coreToStg ) +import TyCon ( isDataTyCon ) +import Packages ( mkHomeModules ) import Name ( Name, NamedThing(..) ) import SimplStg ( stg2stg ) import CodeGen ( codeGen ) +import CmmParse ( parseCmmFile ) import CodeOutput ( codeOutput ) -import CmdLineOpts -import DriverPhases ( isExtCoreFilename ) -import ErrUtils ( dumpIfSet, dumpIfSet_dyn, showPass, printError ) +import DynFlags +import ErrUtils import UniqSupply ( mkSplitUniqSupply ) import Outputable @@ -70,12 +85,10 @@ import HscTypes import MkExternalCore ( emitExternalCore ) import ParserCore import ParserCoreUtils -import Module ( Module, ModLocation(..), showModMsg ) import FastString import Maybes ( expectJust ) - -import Monad ( when ) -import Maybe ( isJust, fromJust ) +import Bag ( unitBag ) +import Monad ( unless ) import IO import DATA_IOREF ( newIORef, readIORef ) \end{code} @@ -88,16 +101,20 @@ import DATA_IOREF ( newIORef, readIORef ) %************************************************************************ \begin{code} -newHscEnv :: GhciMode -> DynFlags -> IO HscEnv -newHscEnv ghci_mode dflags +newHscEnv :: DynFlags -> IO HscEnv +newHscEnv dflags = do { eps_var <- newIORef initExternalPackageState ; us <- mkSplitUniqSupply 'r' ; nc_var <- newIORef (initNameCache us knownKeyNames) - ; return (HscEnv { hsc_mode = ghci_mode, - hsc_dflags = dflags, + ; fc_var <- newIORef emptyModuleEnv + ; return (HscEnv { hsc_dflags = dflags, + hsc_targets = [], + hsc_mod_graph = [], + hsc_IC = emptyInteractiveContext, hsc_HPT = emptyHomePackageTable, hsc_EPS = eps_var, - hsc_NC = nc_var } ) } + hsc_NC = nc_var, + hsc_FC = fc_var } ) } knownKeyNames :: [Name] -- Put here to avoid loops involving DsMeta, @@ -116,153 +133,378 @@ knownKeyNames = map getName wiredInThings %* * %************************************************************************ -\begin{code} -data HscResult - -- Compilation failed - = HscFail - - -- Concluded that it wasn't necessary - | HscNoRecomp ModDetails -- new details (HomeSymbolTable additions) - ModIface -- new iface (if any compilation was done) - - -- Did recompilation - | HscRecomp ModDetails -- new details (HomeSymbolTable additions) - (Maybe GlobalRdrEnv) - ModIface -- new iface (if any compilation was done) - Bool -- stub_h exists - Bool -- stub_c exists - (Maybe CompiledByteCode) - - -- no errors or warnings; the individual passes - -- (parse/rename/typecheck) print messages themselves - -hscMain - :: HscEnv - -> Module - -> ModLocation -- location info - -> Bool -- True <=> source unchanged - -> Bool -- True <=> have an object file (for msgs only) - -> Maybe ModIface -- old interface, if available - -> IO HscResult - -hscMain hsc_env mod location - source_unchanged have_object maybe_old_iface - = do { - (recomp_reqd, maybe_checked_iface) <- - _scc_ "checkOldIface" - checkOldIface hsc_env mod - (ml_hi_file location) - source_unchanged maybe_old_iface; - - let no_old_iface = not (isJust maybe_checked_iface) - what_next | recomp_reqd || no_old_iface = hscRecomp - | otherwise = hscNoRecomp - - ; what_next hsc_env have_object - mod location maybe_checked_iface - } - - --- hscNoRecomp definitely expects to have the old interface available -hscNoRecomp hsc_env have_object - mod location (Just old_iface) - | hsc_mode hsc_env == OneShot - = do { - when (verbosity (hsc_dflags hsc_env) > 0) $ - hPutStrLn stderr "compilation IS NOT required"; - dumpIfaceStats hsc_env ; - - let { bomb = panic "hscNoRecomp:OneShot" }; - return (HscNoRecomp bomb bomb) - } - | otherwise - = do { - when (verbosity (hsc_dflags hsc_env) >= 1) $ - hPutStrLn stderr ("Skipping " ++ - showModMsg have_object mod location); - - new_details <- _scc_ "tcRnIface" - typecheckIface hsc_env old_iface ; - dumpIfaceStats hsc_env ; - - return (HscNoRecomp new_details old_iface) - } - -hscRecomp hsc_env have_object - mod location maybe_checked_iface - = do { - -- what target are we shooting for? - ; let one_shot = hsc_mode hsc_env == OneShot - ; let dflags = hsc_dflags hsc_env - ; let toInterp = dopt_HscLang dflags == HscInterpreted - ; let toCore = isJust (ml_hs_file location) && - isExtCoreFilename (fromJust (ml_hs_file location)) - - ; when (not one_shot && verbosity dflags >= 1) $ - hPutStrLn stderr ("Compiling " ++ - showModMsg (not toInterp) mod location); - - ; front_res <- if toCore then - hscCoreFrontEnd hsc_env location - else - hscFrontEnd hsc_env location - - ; case front_res of - Left flure -> return flure; - Right ds_result -> do { - - - -- OMITTED: - -- ; seqList imported_modules (return ()) - - ------------------- - -- FLATTENING - ------------------- - ; flat_result <- _scc_ "Flattening" - flatten hsc_env ds_result - - -{- TEMP: need to review space-leak fixing here - NB: even the code generator can force one of the - thunks for constructor arguments, for newtypes in particular - - ; let -- Rule-base accumulated from imported packages - pkg_rule_base = eps_rule_base (hsc_EPS hsc_env) + -------------------------------- + The compilation proper + -------------------------------- + + +It's the task of the compilation proper to compile Haskell, hs-boot and +core files to either byte-code, hard-code (C, asm, Java, ect) or to +nothing at all (the module is still parsed and type-checked. This +feature is mostly used by IDE's and the likes). +Compilation can happen in either 'one-shot', 'batch', 'nothing', +or 'interactive' mode. 'One-shot' mode targets hard-code, 'batch' mode +targets hard-code, 'nothing' mode targets nothing and 'interactive' mode +targets byte-code. +The modes are kept separate because of their different types and meanings. +In 'one-shot' mode, we're only compiling a single file and can therefore +discard the new ModIface and ModDetails. This is also the reason it only +targets hard-code; compiling to byte-code or nothing doesn't make sense +when we discard the result. +'Batch' mode is like 'one-shot' except that we keep the resulting ModIface +and ModDetails. 'Batch' mode doesn't target byte-code since that require +us to return the newly compiled byte-code. +'Nothing' mode has exactly the same type as 'batch' mode but they're still +kept separate. This is because compiling to nothing is fairly special: We +don't output any interface files, we don't run the simplifier and we don't +generate any code. +'Interactive' mode is similar to 'batch' mode except that we return the +compiled byte-code together with the ModIface and ModDetails. + +Trying to compile a hs-boot file to byte-code will result in a run-time +error. This is the only thing that isn't caught by the type-system. - -- In one-shot mode, ZAP the external package state at - -- this point, because we aren't going to need it from - -- now on. We keep the name cache, however, because - -- tidyCore needs it. - pcs_middle - | one_shot = pcs_tc{ pcs_EPS = error "pcs_EPS missing" } - | otherwise = pcs_tc - - ; pkg_rule_base `seq` pcs_middle `seq` return () --} - - -- alive at this point: - -- pcs_middle - -- flat_result - -- pkg_rule_base +\begin{code} - ------------------- - -- SIMPLIFY - ------------------- - ; simpl_result <- _scc_ "Core2Core" - core2core hsc_env flat_result +data HscChecked + = HscChecked + -- parsed + (Located (HsModule RdrName)) + -- renamed + (Maybe (HsGroup Name,[LImportDecl Name],Maybe [LIE Name])) + -- typechecked + (Maybe (LHsBinds Id, GlobalRdrEnv, ModDetails)) + + +-- Status of a compilation to hard-code or nothing. +data HscStatus + = HscNoRecomp + | HscRecomp Bool -- Has stub files. + -- This is a hack. We can't compile C files here + -- since it's done in DriverPipeline. For now we + -- just return True if we want the caller to compile + -- it for us. + +-- Status of a compilation to byte-code. +data InteractiveStatus + = InteractiveNoRecomp + | InteractiveRecomp Bool -- Same as HscStatus + CompiledByteCode + + +-- I want Control.Monad.State! --Lemmih 03/07/2006 +newtype Comp a = Comp {runComp :: CompState -> IO (a, CompState)} + +instance Monad Comp where + g >>= fn = Comp $ \s -> runComp g s >>= \(a,s') -> runComp (fn a) s' + return a = Comp $ \s -> return (a,s) + fail = error + +evalComp :: Comp a -> CompState -> IO a +evalComp comp st = do (val,_st') <- runComp comp st + return val + +data CompState + = CompState + { compHscEnv :: HscEnv + , compModSummary :: ModSummary + , compOldIface :: Maybe ModIface + } + +get :: Comp CompState +get = Comp $ \s -> return (s,s) + +gets :: (CompState -> a) -> Comp a +gets getter = do st <- get + return (getter st) + +liftIO :: IO a -> Comp a +liftIO ioA = Comp $ \s -> do a <- ioA + return (a,s) + +type NoRecomp result = ModIface -> Comp result +type FrontEnd core = Comp (Maybe core) + +-- FIXME: The old interface and module index are only using in 'batch' and +-- 'interactive' mode. They should be removed from 'oneshot' mode. +type Compiler result = HscEnv + -> ModSummary + -> Bool -- True <=> source unchanged + -> Maybe ModIface -- Old interface, if available + -> Maybe (Int,Int) -- Just (i,n) <=> module i of n (for msgs) + -> IO (Maybe result) + + +-- This functions checks if recompilation is necessary and +-- then combines the FrontEnd and BackEnd to a working compiler. +hscMkCompiler :: NoRecomp result -- What to do when recompilation isn't required. + -> (Maybe (Int,Int) -> Bool -> Comp ()) + -> FrontEnd core + -> (core -> Comp result) -- Backend. + -> Compiler result +hscMkCompiler norecomp messenger frontend backend + hsc_env mod_summary source_unchanged + mbOldIface mbModIndex + = flip evalComp (CompState hsc_env mod_summary mbOldIface) $ + do (recomp_reqd, mbCheckedIface) + <- {-# SCC "checkOldIface" #-} + liftIO $ checkOldIface hsc_env mod_summary + source_unchanged mbOldIface + case mbCheckedIface of + Just iface | not recomp_reqd + -> do messenger mbModIndex False + result <- norecomp iface + return (Just result) + _otherwise + -> do messenger mbModIndex True + mbCore <- frontend + case mbCore of + Nothing + -> return Nothing + Just core + -> do result <- backend core + return (Just result) + +-------------------------------------------------------------- +-- Compilers +-------------------------------------------------------------- + +-- 1 2 3 4 5 6 7 8 9 +-- Compile Haskell, boot and extCore in OneShot mode. +hscCompileOneShot :: Compiler HscStatus +hscCompileOneShot hsc_env mod_summary = + compiler hsc_env mod_summary + where mkComp = hscMkCompiler norecompOneShot oneShotMsg + -- How to compile nonBoot files. + nonBootComp inp = hscSimplify inp >>= hscNormalIface >>= + hscWriteIface >>= hscOneShot + -- How to compile boot files. + bootComp inp = hscSimpleIface inp >>= hscWriteIface >>= hscConst (HscRecomp False) + compiler + = case ms_hsc_src mod_summary of + ExtCoreFile + -> mkComp hscCoreFrontEnd nonBootComp + HsSrcFile + -> mkComp hscFileFrontEnd nonBootComp + HsBootFile + -> mkComp hscFileFrontEnd bootComp + +-- Compile Haskell, boot and extCore in batch mode. +hscCompileBatch :: Compiler (HscStatus, ModIface, ModDetails) +hscCompileBatch hsc_env mod_summary + = compiler hsc_env mod_summary + where mkComp = hscMkCompiler norecompBatch batchMsg + nonBootComp inp = hscSimplify inp >>= hscNormalIface >>= + hscWriteIface >>= hscBatch + bootComp inp = hscSimpleIface inp >>= hscWriteIface >>= hscNothing + compiler + = case ms_hsc_src mod_summary of + ExtCoreFile + -> mkComp hscCoreFrontEnd nonBootComp + HsSrcFile + -> mkComp hscFileFrontEnd nonBootComp + HsBootFile + -> mkComp hscFileFrontEnd bootComp + +-- Type-check Haskell, boot and extCore. +-- Does it make sense to compile extCore to nothing? +hscCompileNothing :: Compiler (HscStatus, ModIface, ModDetails) +hscCompileNothing hsc_env mod_summary + = compiler hsc_env mod_summary + where mkComp = hscMkCompiler norecompBatch batchMsg + pipeline inp = hscSimpleIface inp >>= hscIgnoreIface >>= hscNothing + compiler + = case ms_hsc_src mod_summary of + ExtCoreFile + -> mkComp hscCoreFrontEnd pipeline + HsSrcFile + -> mkComp hscFileFrontEnd pipeline + HsBootFile + -> mkComp hscFileFrontEnd pipeline + +-- Compile Haskell, extCore to bytecode. +hscCompileInteractive :: Compiler (InteractiveStatus, ModIface, ModDetails) +hscCompileInteractive hsc_env mod_summary = + hscMkCompiler norecompInteractive batchMsg + frontend backend + hsc_env mod_summary + where backend inp = hscSimplify inp >>= hscNormalIface >>= hscIgnoreIface >>= hscInteractive + frontend = case ms_hsc_src mod_summary of + ExtCoreFile -> hscCoreFrontEnd + HsSrcFile -> hscFileFrontEnd + HsBootFile -> panic bootErrorMsg + bootErrorMsg = "Compiling a HsBootFile to bytecode doesn't make sense. " ++ + "Use 'hscCompileBatch' instead." + +-------------------------------------------------------------- +-- NoRecomp handlers +-------------------------------------------------------------- + +norecompOneShot :: NoRecomp HscStatus +norecompOneShot old_iface + = do hsc_env <- gets compHscEnv + liftIO $ do + dumpIfaceStats hsc_env + return HscNoRecomp + +norecompBatch :: NoRecomp (HscStatus, ModIface, ModDetails) +norecompBatch = norecompWorker HscNoRecomp False + +norecompInteractive :: NoRecomp (InteractiveStatus, ModIface, ModDetails) +norecompInteractive = norecompWorker InteractiveNoRecomp True + +norecompWorker :: a -> Bool -> NoRecomp (a, ModIface, ModDetails) +norecompWorker a isInterp old_iface + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + new_details <- {-# SCC "tcRnIface" #-} + initIfaceCheck hsc_env $ + typecheckIface old_iface + dumpIfaceStats hsc_env + return (a, old_iface, new_details) + +-------------------------------------------------------------- +-- Progress displayers. +-------------------------------------------------------------- + +oneShotMsg :: Maybe (Int,Int) -> Bool -> Comp () +oneShotMsg _mb_mod_index recomp + = do hsc_env <- gets compHscEnv + liftIO $ do + if recomp + then return () + else compilationProgressMsg (hsc_dflags hsc_env) $ + "compilation IS NOT required" + +batchMsg :: Maybe (Int,Int) -> Bool -> Comp () +batchMsg mb_mod_index recomp + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + let showMsg msg = compilationProgressMsg (hsc_dflags hsc_env) $ + (showModuleIndex mb_mod_index ++ + msg ++ showModMsg (hscTarget (hsc_dflags hsc_env)) recomp mod_summary) + liftIO $ do + if recomp + then showMsg "Compiling " + else showMsg "Skipping " + + + +-------------------------------------------------------------- +-- FrontEnds +-------------------------------------------------------------- + +hscCoreFrontEnd :: FrontEnd ModGuts +hscCoreFrontEnd = + do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + ------------------- + -- PARSE + ------------------- + inp <- readFile (ms_hspp_file mod_summary) + case parseCore inp 1 of + FailP s + -> do errorMsg (hsc_dflags hsc_env) (text s{-ToDo: wrong-}) + return Nothing + OkP rdr_module + ------------------- + -- RENAME and TYPECHECK + ------------------- + -> do (tc_msgs, maybe_tc_result) <- {-# SCC "TypeCheck" #-} + tcRnExtCore hsc_env rdr_module + printErrorsAndWarnings (hsc_dflags hsc_env) tc_msgs + case maybe_tc_result of + Nothing -> return Nothing + Just mod_guts -> return (Just mod_guts) -- No desugaring to do! + +hscFileFrontEnd :: FrontEnd ModGuts +hscFileFrontEnd = + do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + ------------------- + -- PARSE + ------------------- + let dflags = hsc_dflags hsc_env + hspp_file = ms_hspp_file mod_summary + hspp_buf = ms_hspp_buf mod_summary + maybe_parsed <- myParseModule dflags hspp_file hspp_buf + case maybe_parsed of + Left err + -> do printBagOfErrors dflags (unitBag err) + return Nothing + Right rdr_module + ------------------- + -- RENAME and TYPECHECK + ------------------- + -> do (tc_msgs, maybe_tc_result) + <- {-# SCC "Typecheck-Rename" #-} + tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module + printErrorsAndWarnings dflags tc_msgs + case maybe_tc_result of + Nothing + -> return Nothing + Just tc_result + ------------------- + -- DESUGAR + ------------------- + -> do (warns, maybe_ds_result) <- {-# SCC "DeSugar" #-} + deSugar hsc_env tc_result + printBagOfWarnings dflags warns + return maybe_ds_result + +-------------------------------------------------------------- +-- Simplifiers +-------------------------------------------------------------- + +hscSimplify :: ModGuts -> Comp ModGuts +hscSimplify ds_result + = do hsc_env <- gets compHscEnv + liftIO $ do + flat_result <- {-# SCC "Flattening" #-} + flatten hsc_env ds_result + ------------------- + -- SIMPLIFY + ------------------- + simpl_result <- {-# SCC "Core2Core" #-} + core2core hsc_env flat_result + return simpl_result + +-------------------------------------------------------------- +-- Interface generators +-------------------------------------------------------------- + +-- HACK: we return ModGuts even though we know it's not gonna be used. +-- We do this because the type signature needs to be identical +-- in structure to the type of 'hscNormalIface'. +hscSimpleIface :: ModGuts -> Comp (ModIface, Bool, ModDetails, ModGuts) +hscSimpleIface ds_result + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + maybe_old_iface <- gets compOldIface + liftIO $ do + details <- mkBootModDetails hsc_env ds_result + (new_iface, no_change) + <- {-# SCC "MkFinalIface" #-} + mkIface hsc_env maybe_old_iface ds_result details + -- And the answer is ... + dumpIfaceStats hsc_env + return (new_iface, no_change, details, ds_result) + +hscNormalIface :: ModGuts -> Comp (ModIface, Bool, ModDetails, CgGuts) +hscNormalIface simpl_result + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + maybe_old_iface <- gets compOldIface + liftIO $ do ------------------- -- TIDY ------------------- - ; tidy_result <- _scc_ "CoreTidy" - tidyCorePgm hsc_env simpl_result - - -- Emit external core - ; emitExternalCore dflags tidy_result - - -- Alive at this point: - -- tidy_result, pcs_final - -- hsc_env + (cg_guts, details) <- {-# SCC "CoreTidy" #-} + tidyProgram hsc_env simpl_result ------------------- -- BUILD THE NEW ModIface and ModDetails @@ -270,162 +512,210 @@ hscRecomp hsc_env have_object -- This has to happen *after* code gen so that the back-end -- info has been set. Not yet clear if it matters waiting -- until after code output - ; new_iface <- _scc_ "MkFinalIface" - mkIface hsc_env location - maybe_checked_iface tidy_result - - - -- Space leak reduction: throw away the new interface if - -- we're in one-shot mode; we won't be needing it any - -- more. - ; final_iface <- - if one_shot then return (error "no final iface") - else return new_iface - ; let { final_globals | one_shot = Nothing - | otherwise = Just $! (mg_rdr_env tidy_result) } - ; final_globals `seq` return () - - -- Build the final ModDetails (except in one-shot mode, where - -- we won't need this information after compilation). - ; final_details <- - if one_shot then return (error "no final details") - else return $! ModDetails { - md_types = mg_types tidy_result, - md_insts = mg_insts tidy_result, - md_rules = mg_rules tidy_result } + (new_iface, no_change) + <- {-# SCC "MkFinalIface" #-} + mkIface hsc_env maybe_old_iface simpl_result details + -- Emit external core + emitExternalCore (hsc_dflags hsc_env) cg_guts -- Move this? --Lemmih 03/07/2006 + dumpIfaceStats hsc_env ------------------- - -- CONVERT TO STG and COMPLETE CODE GENERATION - ; (stub_h_exists, stub_c_exists, maybe_bcos) - <- hscBackEnd dflags tidy_result - - -- And the answer is ... - ; dumpIfaceStats hsc_env + -- Return the prepared code. + return (new_iface, no_change, details, cg_guts) + +-------------------------------------------------------------- +-- BackEnd combinators +-------------------------------------------------------------- + +hscWriteIface :: (ModIface, Bool, ModDetails, a) -> Comp (ModIface, ModDetails, a) +hscWriteIface (iface, no_change, details, a) + = do mod_summary <- gets compModSummary + liftIO $ do + unless no_change + $ writeIfaceFile (ms_location mod_summary) iface + return (iface, details, a) + +hscIgnoreIface :: (ModIface, Bool, ModDetails, a) -> Comp (ModIface, ModDetails, a) +hscIgnoreIface (iface, no_change, details, a) + = return (iface, details, a) + +-- Don't output any code. +hscNothing :: (ModIface, ModDetails, a) -> Comp (HscStatus, ModIface, ModDetails) +hscNothing (iface, details, a) + = return (HscRecomp False, iface, details) + +-- Generate code and return both the new ModIface and the ModDetails. +hscBatch :: (ModIface, ModDetails, CgGuts) -> Comp (HscStatus, ModIface, ModDetails) +hscBatch (iface, details, cgguts) + = do hasStub <- hscCompile cgguts + return (HscRecomp hasStub, iface, details) + +-- Here we don't need the ModIface and ModDetails anymore. +hscOneShot :: (ModIface, ModDetails, CgGuts) -> Comp HscStatus +hscOneShot (_, _, cgguts) + = do hasStub <- hscCompile cgguts + return (HscRecomp hasStub) + +-- Compile to hard-code. +hscCompile :: CgGuts -> Comp Bool +hscCompile cgguts + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + let CgGuts{ -- This is the last use of the ModGuts in a compilation. + -- From now on, we just use the bits we need. + cg_module = this_mod, + cg_binds = core_binds, + cg_tycons = tycons, + cg_dir_imps = dir_imps, + cg_foreign = foreign_stubs, + cg_home_mods = home_mods, + cg_dep_pkgs = dependencies } = cgguts + dflags = hsc_dflags hsc_env + location = ms_location mod_summary + data_tycons = filter isDataTyCon tycons + -- cg_tycons includes newtypes, for the benefit of External Core, + -- but we don't generate any code for newtypes + + ------------------- + -- PREPARE FOR CODE GENERATION + -- Do saturation and convert to A-normal form + prepd_binds <- {-# SCC "CorePrep" #-} + corePrepPgm dflags core_binds data_tycons ; + ----------------- Convert to STG ------------------ + (stg_binds, cost_centre_info) + <- {-# SCC "CoreToStg" #-} + myCoreToStg dflags home_mods this_mod prepd_binds + ------------------ Code generation ------------------ + abstractC <- {-# SCC "CodeGen" #-} + codeGen dflags home_mods this_mod data_tycons + foreign_stubs dir_imps cost_centre_info + stg_binds + ------------------ Code output ----------------------- + (stub_h_exists,stub_c_exists) + <- codeOutput dflags this_mod location foreign_stubs + dependencies abstractC + return stub_c_exists + +hscConst :: b -> a -> Comp b +hscConst b a = return b + +hscInteractive :: (ModIface, ModDetails, CgGuts) + -> Comp (InteractiveStatus, ModIface, ModDetails) +hscInteractive (iface, details, cgguts) +#ifdef GHCI + = do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + let CgGuts{ -- This is the last use of the ModGuts in a compilation. + -- From now on, we just use the bits we need. + cg_module = this_mod, + cg_binds = core_binds, + cg_tycons = tycons, + cg_foreign = foreign_stubs } = cgguts + dflags = hsc_dflags hsc_env + location = ms_location mod_summary + data_tycons = filter isDataTyCon tycons + -- cg_tycons includes newtypes, for the benefit of External Core, + -- but we don't generate any code for newtypes + + ------------------- + -- PREPARE FOR CODE GENERATION + -- Do saturation and convert to A-normal form + prepd_binds <- {-# SCC "CorePrep" #-} + corePrepPgm dflags core_binds data_tycons ; + ----------------- Generate byte code ------------------ + comp_bc <- byteCodeGen dflags prepd_binds data_tycons + ------------------ Create f-x-dynamic C-side stuff --- + (istub_h_exists, istub_c_exists) + <- outputForeignStubs dflags this_mod location foreign_stubs + return (InteractiveRecomp istub_c_exists comp_bc, iface, details) +#else + = panic "GHC not compiled with interpreter" +#endif - ; return (HscRecomp final_details - final_globals - final_iface - stub_h_exists stub_c_exists - maybe_bcos) - }} +------------------------------ -hscCoreFrontEnd hsc_env location = do { +hscFileCheck :: HscEnv -> ModSummary -> IO (Maybe HscChecked) +hscFileCheck hsc_env mod_summary = do { ------------------- -- PARSE ------------------- - ; inp <- readFile (expectJust "hscCoreFrontEnd:hspp" (ml_hspp_file location)) - ; case parseCore inp 1 of - FailP s -> hPutStrLn stderr s >> return (Left HscFail); - OkP rdr_module -> do { - - ------------------- - -- RENAME and TYPECHECK - ------------------- - ; maybe_tc_result <- _scc_ "TypeCheck" - tcRnExtCore hsc_env rdr_module - ; case maybe_tc_result of { - Nothing -> return (Left HscFail); - Just mod_guts -> return (Right mod_guts) - -- No desugaring to do! - }}} - + ; let dflags = hsc_dflags hsc_env + hspp_file = ms_hspp_file mod_summary + hspp_buf = ms_hspp_buf mod_summary -hscFrontEnd hsc_env location = do { - ------------------- - -- PARSE - ------------------- - ; maybe_parsed <- myParseModule (hsc_dflags hsc_env) - (expectJust "hscFrontEnd:hspp" (ml_hspp_file location)) + ; maybe_parsed <- myParseModule dflags hspp_file hspp_buf ; case maybe_parsed of { - Nothing -> return (Left HscFail); - Just rdr_module -> do { - - ------------------- - -- RENAME and TYPECHECK - ------------------- - ; maybe_tc_result <- _scc_ "Typecheck-Rename" - tcRnModule hsc_env rdr_module - ; case maybe_tc_result of { - Nothing -> return (Left HscFail); - Just tc_result -> do { + Left err -> do { printBagOfErrors dflags (unitBag err) + ; return Nothing } ; + Right rdr_module -> do { ------------------- - -- DESUGAR - ------------------- - ; maybe_ds_result <- _scc_ "DeSugar" - deSugar hsc_env tc_result - ; case maybe_ds_result of - Nothing -> return (Left HscFail); - Just ds_result -> return (Right ds_result); - }}}}} - - -hscBackEnd dflags - ModGuts{ -- This is the last use of the ModGuts in a compilation. - -- From now on, we just use the bits we need. - mg_module = this_mod, - mg_binds = core_binds, - mg_types = type_env, - mg_dir_imps = dir_imps, - mg_foreign = foreign_stubs, - mg_deps = dependencies } = do { - + -- RENAME and TYPECHECK ------------------- - -- PREPARE FOR CODE GENERATION - -- Do saturation and convert to A-normal form - prepd_binds <- _scc_ "CorePrep" - corePrepPgm dflags core_binds type_env; + (tc_msgs, maybe_tc_result) + <- _scc_ "Typecheck-Rename" + tcRnModule hsc_env (ms_hsc_src mod_summary) + True{-save renamed syntax-} + rdr_module - case dopt_HscLang dflags of - HscNothing -> return (False, False, Nothing) - - HscInterpreted -> -#ifdef GHCI - do ----------------- Generate byte code ------------------ - comp_bc <- byteCodeGen dflags prepd_binds type_env - - ------------------ Create f-x-dynamic C-side stuff --- - (istub_h_exists, istub_c_exists) - <- outputForeignStubs dflags foreign_stubs - - return ( istub_h_exists, istub_c_exists, Just comp_bc ) -#else - panic "GHC not compiled with interpreter" -#endif - - other -> - do - ----------------- Convert to STG ------------------ - (stg_binds, cost_centre_info) <- _scc_ "CoreToStg" - myCoreToStg dflags this_mod prepd_binds - - ------------------ Code generation ------------------ - abstractC <- _scc_ "CodeGen" - codeGen dflags this_mod type_env foreign_stubs - dir_imps cost_centre_info stg_binds - - ------------------ Code output ----------------------- - (stub_h_exists, stub_c_exists) - <- codeOutput dflags this_mod foreign_stubs - dependencies abstractC + ; printErrorsAndWarnings dflags tc_msgs + ; case maybe_tc_result of { + Nothing -> return (Just (HscChecked rdr_module Nothing Nothing)); + Just tc_result -> do + let md = ModDetails { + md_types = tcg_type_env tc_result, + md_exports = tcg_exports tc_result, + md_insts = tcg_insts tc_result, + md_rules = [panic "no rules"] } + -- Rules are CoreRules, not the + -- RuleDecls we get out of the typechecker + rnInfo = do decl <- tcg_rn_decls tc_result + imports <- tcg_rn_imports tc_result + let exports = tcg_rn_exports tc_result + return (decl,imports,exports) + return (Just (HscChecked rdr_module + rnInfo + (Just (tcg_binds tc_result, + tcg_rdr_env tc_result, + md)))) + }}}} + + +hscCmmFile :: DynFlags -> FilePath -> IO Bool +hscCmmFile dflags filename = do + maybe_cmm <- parseCmmFile dflags (mkHomeModules []) filename + case maybe_cmm of + Nothing -> return False + Just cmm -> do + codeOutput dflags no_mod no_loc NoStubs [] [cmm] + return True + where + no_mod = panic "hscCmmFile: no_mod" + no_loc = ModLocation{ ml_hs_file = Just filename, + ml_hi_file = panic "hscCmmFile: no hi file", + ml_obj_file = panic "hscCmmFile: no obj file" } - return (stub_h_exists, stub_c_exists, Nothing) - } +myParseModule dflags src_filename maybe_src_buf + = -------------------------- Parser ---------------- + showPass dflags "Parser" >> + {-# SCC "Parser" #-} do -myParseModule dflags src_filename - = do -------------------------- Parser ---------------- - showPass dflags "Parser" - _scc_ "Parser" do - buf <- hGetStringBuffer src_filename + -- sometimes we already have the buffer in memory, perhaps + -- because we needed to parse the imports out of it, or get the + -- module name. + buf <- case maybe_src_buf of + Just b -> return b + Nothing -> hGetStringBuffer src_filename let loc = mkSrcLoc (mkFastString src_filename) 1 0 case unP parseModule (mkPState buf loc dflags) of { - PFailed span err -> do { printError span err ; - return Nothing }; + PFailed span err -> return (Left (mkPlainErrMsg span err)); POk _ rdr_module -> do { @@ -434,18 +724,18 @@ myParseModule dflags src_filename dumpIfSet_dyn dflags Opt_D_source_stats "Source Statistics" (ppSourceStats False rdr_module) ; - return (Just rdr_module) + return (Right rdr_module) -- ToDo: free the string buffer later. }} -myCoreToStg dflags this_mod prepd_binds +myCoreToStg dflags home_mods this_mod prepd_binds = do - stg_binds <- _scc_ "Core2Stg" - coreToStg dflags prepd_binds + stg_binds <- {-# SCC "Core2Stg" #-} + coreToStg home_mods prepd_binds - (stg_binds2, cost_centre_info) <- _scc_ "Core2Stg" - stg2stg dflags this_mod stg_binds + (stg_binds2, cost_centre_info) <- {-# SCC "Stg2Stg" #-} + stg2stg dflags home_mods this_mod stg_binds return (stg_binds2, cost_centre_info) \end{code} @@ -487,19 +777,19 @@ A naked expression returns a singleton Name [it]. #ifdef GHCI hscStmt -- Compile a stmt all the way to an HValue, but don't run it :: HscEnv - -> InteractiveContext -- Context for compiling -> String -- The statement - -> IO (Maybe (InteractiveContext, [Name], HValue)) + -> IO (Maybe (HscEnv, [Name], HValue)) -hscStmt hsc_env icontext stmt +hscStmt hsc_env stmt = do { maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) stmt ; case maybe_stmt of { - Nothing -> return Nothing ; - Just parsed_stmt -> do { + Nothing -> return Nothing ; -- Parse error + Just Nothing -> return Nothing ; -- Empty line + Just (Just parsed_stmt) -> do { -- The real stuff -- Rename and typecheck it - maybe_tc_result - <- tcRnStmt hsc_env icontext parsed_stmt + let icontext = hsc_IC hsc_env + ; maybe_tc_result <- tcRnStmt hsc_env icontext parsed_stmt ; case maybe_tc_result of { Nothing -> return Nothing ; @@ -511,91 +801,79 @@ hscStmt hsc_env icontext stmt (ic_type_env new_ic) tc_expr - ; return (Just (new_ic, bound_names, hval)) + ; return (Just (hsc_env{ hsc_IC=new_ic }, bound_names, hval)) }}}}} hscTcExpr -- Typecheck an expression (but don't run it) :: HscEnv - -> InteractiveContext -- Context for compiling -> String -- The expression -> IO (Maybe Type) -hscTcExpr hsc_env icontext expr +hscTcExpr hsc_env expr = do { maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) expr + ; let icontext = hsc_IC hsc_env ; case maybe_stmt of { - Just (L _ (ExprStmt expr _)) + Nothing -> return Nothing ; -- Parse error + Just (Just (L _ (ExprStmt expr _ _))) -> tcRnExpr hsc_env icontext expr ; - Just other -> do { hPutStrLn stderr ("not an expression: `" ++ expr ++ "'") ; + Just other -> do { errorMsg (hsc_dflags hsc_env) (text "not an expression:" <+> quotes (text expr)) ; + return Nothing } ; + } } + +hscKcType -- Find the kind of a type + :: HscEnv + -> String -- The type + -> IO (Maybe Kind) + +hscKcType hsc_env str + = do { maybe_type <- hscParseType (hsc_dflags hsc_env) str + ; let icontext = hsc_IC hsc_env + ; case maybe_type of { + Just ty -> tcRnType hsc_env icontext ty ; + Just other -> do { errorMsg (hsc_dflags hsc_env) (text "not an type:" <+> quotes (text str)) ; return Nothing } ; Nothing -> return Nothing } } +#endif \end{code} \begin{code} -hscParseStmt :: DynFlags -> String -> IO (Maybe (LStmt RdrName)) -hscParseStmt dflags str - = do showPass dflags "Parser" - _scc_ "Parser" do +#ifdef GHCI +hscParseStmt :: DynFlags -> String -> IO (Maybe (Maybe (LStmt RdrName))) +hscParseStmt = hscParseThing parseStmt + +hscParseType :: DynFlags -> String -> IO (Maybe (LHsType RdrName)) +hscParseType = hscParseThing parseType +#endif + +hscParseIdentifier :: DynFlags -> String -> IO (Maybe (Located RdrName)) +hscParseIdentifier = hscParseThing parseIdentifier + +hscParseThing :: Outputable thing + => Lexer.P thing + -> DynFlags -> String + -> IO (Maybe thing) + -- Nothing => Parse error (message already printed) + -- Just x => success +hscParseThing parser dflags str + = showPass dflags "Parser" >> + {-# SCC "Parser" #-} do buf <- stringToStringBuffer str let loc = mkSrcLoc FSLIT("") 1 0 - case unP parseStmt (mkPState buf loc dflags) of { + case unP parser (mkPState buf loc dflags) of { PFailed span err -> do { printError span err; return Nothing }; - -- no stmt: the line consisted of just space or comments - POk _ Nothing -> return Nothing; - - POk _ (Just rdr_stmt) -> do { + POk _ thing -> do { --ToDo: can't free the string buffer until we've finished this -- compilation sweep and all the identifiers have gone away. - dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_stmt); - return (Just rdr_stmt) + dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr thing); + return (Just thing) }} -#endif -\end{code} - -%************************************************************************ -%* * -\subsection{Getting information about an identifer} -%* * -%************************************************************************ - -\begin{code} -#ifdef GHCI -hscThing -- like hscStmt, but deals with a single identifier - :: HscEnv - -> InteractiveContext -- Context for compiling - -> String -- The identifier - -> IO [(IfaceDecl, Fixity)] - -hscThing hsc_env ic str - = do maybe_rdr_name <- myParseIdentifier (hsc_dflags hsc_env) str - case maybe_rdr_name of { - Nothing -> return []; - Just (L _ rdr_name) -> do - - maybe_tc_result <- tcRnThing hsc_env ic rdr_name - - case maybe_tc_result of { - Nothing -> return [] ; - Just things -> return things - }} - -myParseIdentifier dflags str - = do buf <- stringToStringBuffer str - - let loc = mkSrcLoc FSLIT("") 1 0 - case unP parseIdentifier (mkPState buf loc dflags) of - - PFailed span err -> do { printError span err; - return Nothing } - - POk _ rdr_name -> return (Just rdr_name) -#endif \end{code} %************************************************************************ @@ -625,7 +903,7 @@ compileExpr hsc_env this_mod rdr_env type_env tc_expr ; simpl_expr <- simplifyExpr dflags flat_expr -- Tidy it (temporary, until coreSat does cloning) - ; tidy_expr <- tidyCoreExpr simpl_expr + ; let tidy_expr = tidyExpr emptyTidyEnv simpl_expr -- Prepare for codegen ; prepd_expr <- corePrepExpr dflags tidy_expr @@ -669,3 +947,19 @@ dumpIfaceStats hsc_env dump_rn_stats = dopt Opt_D_dump_rn_stats dflags dump_if_trace = dopt Opt_D_dump_if_trace dflags \end{code} + +%************************************************************************ +%* * + Progress Messages: Module i of n +%* * +%************************************************************************ + +\begin{code} +showModuleIndex Nothing = "" +showModuleIndex (Just (i,n)) = "[" ++ padded ++ " of " ++ n_str ++ "] " + where + n_str = show n + i_str = show i + padded = replicate (length n_str - length i_str) ' ' ++ i_str +\end{code} +