X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FHscMain.lhs;h=ab1732ce911753d7bf9bd7505ebc3f94b77b34d5;hb=0372ac231bd18e993a2533f784805046876d5527;hp=bd6bc430a691298657fdffc2b4393d59bca28387;hpb=91944423d83620441d6d3b120654a10fb41cfb3c;p=ghc-hetmet.git diff --git a/ghc/compiler/main/HscMain.lhs b/ghc/compiler/main/HscMain.lhs index bd6bc43..ab1732c 100644 --- a/ghc/compiler/main/HscMain.lhs +++ b/ghc/compiler/main/HscMain.lhs @@ -5,23 +5,27 @@ \section[GHC_Main]{Main driver for Glasgow Haskell compiler} \begin{code} -module HscMain ( - HscResult(..), - hscMain, newHscEnv, hscCmmFile, - hscFileCheck, - hscParseIdentifier, +module HscMain + ( newHscEnv, hscCmmFile + , hscFileCheck + , hscParseIdentifier #ifdef GHCI - hscStmt, hscTcExpr, hscKcType, - hscGetInfo, GetInfoResult, - 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(..), LHsExpr, LStmt, LHsType ) -import IfaceSyn ( IfaceDecl, IfaceInst ) import Module ( Module ) import CodeOutput ( outputForeignStubs ) import ByteCodeGen ( byteCodeGen, coreExprToBCOs ) @@ -29,23 +33,22 @@ import Linker ( HValue, linkExpr ) import CoreTidy ( tidyExpr ) import CorePrep ( corePrepExpr ) import Flattening ( flattenExpr ) -import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnGetInfo, GetInfoResult, tcRnType ) -import RdrName ( rdrNameOcc ) -import OccName ( occNameUserString ) +import Desugar ( deSugarExpr ) +import SimplCore ( simplifyExpr ) +import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnType ) import Type ( Type ) import PrelNames ( iNTERACTIVE ) import Kind ( Kind ) import CoreLint ( lintUnfolding ) import DsMeta ( templateHaskellNames ) -import BasicTypes ( Fixity ) -import SrcLoc ( SrcLoc, noSrcLoc ) +import SrcLoc ( noSrcLoc ) import VarEnv ( emptyTidyEnv ) #endif import Var ( Id ) -import Module ( emptyModuleEnv ) +import Module ( emptyModuleEnv, ModLocation(..) ) import RdrName ( GlobalRdrEnv, RdrName ) -import HsSyn ( HsModule, LHsBinds, HsGroup ) +import HsSyn ( HsModule, LHsBinds, HsGroup, LIE, LImportDecl ) import SrcLoc ( Located(..) ) import StringBuffer ( hGetStringBuffer, stringToStringBuffer ) import Parser @@ -58,13 +61,14 @@ import IfaceEnv ( initNameCache ) import LoadIface ( ifaceStats, initExternalPackageState ) import PrelInfo ( wiredInThings, basicKnownKeyNames ) import MkIface ( checkOldIface, mkIface, writeIfaceFile ) -import Desugar +import Desugar ( deSugar ) import Flattening ( flatten ) -import SimplCore -import TidyPgm ( optTidyPgm, simpleTidyPgm ) +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 ) @@ -72,7 +76,6 @@ import CmmParse ( parseCmmFile ) import CodeOutput ( codeOutput ) import DynFlags -import DriverPhases ( HscSource(..) ) import ErrUtils import UniqSupply ( mkSplitUniqSupply ) @@ -84,9 +87,8 @@ import ParserCore import ParserCoreUtils import FastString import Maybes ( expectJust ) -import Bag ( unitBag, emptyBag ) -import Monad ( when ) -import Maybe ( isJust ) +import Bag ( unitBag ) +import Monad ( unless ) import IO import DATA_IOREF ( newIORef, readIORef ) \end{code} @@ -131,195 +133,521 @@ knownKeyNames = map getName wiredInThings %* * %************************************************************************ -\begin{code} -data HscResult - -- Compilation failed - = HscFail - - -- In IDE mode: we just do the static/dynamic checks - | HscChecked - (Located (HsModule RdrName)) -- parsed - (Maybe (HsGroup Name)) -- renamed - (Maybe (LHsBinds Id, GlobalRdrEnv, ModDetails)) -- typechecked - - -- 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) - ModIface -- new iface (if any compilation was done) - Bool -- stub_h exists - Bool -- stub_c exists - (Maybe CompiledByteCode) - - --- What to do when we have compiler error or warning messages -type MessageAction = Messages -> IO () - - -- no errors or warnings; the individual passes - -- (parse/rename/typecheck) print messages themselves - -hscMain - :: HscEnv - -> MessageAction -- What to do with errors/warnings - -> ModSummary - -> Bool -- True <=> source unchanged - -> Bool -- True <=> have an object file (for msgs only) - -> Maybe ModIface -- Old interface, if available - -> Maybe (Int, Int) -- Just (i,n) <=> module i of n (for msgs) - -> IO HscResult - -hscMain hsc_env msg_act mod_summary - source_unchanged have_object maybe_old_iface - mb_mod_index - = do { - (recomp_reqd, maybe_checked_iface) <- - {-# SCC "checkOldIface" #-} - checkOldIface hsc_env mod_summary - 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 msg_act mod_summary have_object - maybe_checked_iface - mb_mod_index - } + -------------------------------- + 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. +\begin{code} ------------------------------- -hscNoRecomp hsc_env msg_act mod_summary - have_object (Just old_iface) - mb_mod_index - | isOneShot (ghcMode (hsc_dflags hsc_env)) - = do { - compilationProgressMsg (hsc_dflags hsc_env) $ - "compilation IS NOT required"; - dumpIfaceStats hsc_env ; - - let { bomb = panic "hscNoRecomp:OneShot" }; - return (HscNoRecomp bomb bomb) - } - | otherwise - = do { compilationProgressMsg (hsc_dflags hsc_env) $ - (showModuleIndex mb_mod_index ++ - "Skipping " ++ showModMsg have_object mod_summary) - - ; new_details <- {-# SCC "tcRnIface" #-} - initIfaceCheck hsc_env $ - typecheckIface old_iface ; - ; dumpIfaceStats hsc_env - - ; return (HscNoRecomp new_details old_iface) +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 } -hscNoRecomp hsc_env msg_act mod_summary - have_object Nothing - mb_mod_index - = panic "hscNoRecomp" -- hscNoRecomp definitely expects to - -- have the old interface available +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 HscNoRecomp) 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 False) + 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. +hscCompileNothing :: Compiler (HscStatus, ModIface, ModDetails) +hscCompileNothing hsc_env mod_summary + = compiler hsc_env mod_summary + where mkComp = hscMkCompiler norecompBatch (batchMsg False) + 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 True) + 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 :: a -> NoRecomp a +norecompOneShot a old_iface + = do hsc_env <- gets compHscEnv + liftIO $ do + dumpIfaceStats hsc_env + return a + +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 :: Bool -> Maybe (Int,Int) -> Bool -> Comp () +batchMsg toInterp 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 (not toInterp) 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 (expectJust "hscCoreFrontEnd" (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! ------------------------------- -hscRecomp hsc_env msg_act mod_summary - have_object maybe_old_iface - mb_mod_index - = case ms_hsc_src mod_summary of - HsSrcFile -> do - front_res <- hscFileFrontEnd hsc_env msg_act mod_summary mb_mod_index - hscBackEnd hsc_env mod_summary maybe_old_iface front_res - - HsBootFile -> do - front_res <- hscFileFrontEnd hsc_env msg_act mod_summary mb_mod_index - hscBootBackEnd hsc_env mod_summary maybe_old_iface front_res - - ExtCoreFile -> do - front_res <- hscCoreFrontEnd hsc_env msg_act mod_summary - hscBackEnd hsc_env mod_summary maybe_old_iface front_res - -hscCoreFrontEnd hsc_env msg_act mod_summary = do { - ------------------- - -- PARSE - ------------------- - ; inp <- readFile (expectJust "hscCoreFrontEnd" (ms_hspp_file mod_summary)) - ; case parseCore inp 1 of - FailP s -> putMsg s{-ToDo: wrong-} >> return Nothing - OkP rdr_module -> do { - - ------------------- - -- RENAME and TYPECHECK - ------------------- - ; (tc_msgs, maybe_tc_result) <- {-# SCC "TypeCheck" #-} - tcRnExtCore hsc_env rdr_module - ; msg_act tc_msgs - ; case maybe_tc_result of - Nothing -> return Nothing - Just mod_guts -> return (Just mod_guts) -- No desugaring to do! - }} - -hscFileFrontEnd hsc_env msg_act mod_summary mb_mod_index = do { - ------------------- - -- DISPLAY PROGRESS MESSAGE +hscFileFrontEnd :: FrontEnd ModGuts +hscFileFrontEnd = + do hsc_env <- gets compHscEnv + mod_summary <- gets compModSummary + liftIO $ do + ------------------- + -- PARSE + ------------------- + let dflags = hsc_dflags hsc_env + hspp_file = expectJust "hscFileFrontEnd" (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 ------------------- - let one_shot = isOneShot (ghcMode (hsc_dflags hsc_env)) - ; let dflags = hsc_dflags hsc_env - ; let toInterp = hscTarget dflags == HscInterpreted - ; when (not one_shot) $ - compilationProgressMsg dflags $ - (showModuleIndex mb_mod_index ++ - "Compiling " ++ showModMsg (not toInterp) mod_summary) - - ------------------- - -- PARSE + -- TIDY ------------------- - ; let hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary) - hspp_buf = ms_hspp_buf mod_summary - - ; maybe_parsed <- myParseModule (hsc_dflags hsc_env) hspp_file hspp_buf - - ; case maybe_parsed of { - Left err -> do { msg_act (unitBag err, emptyBag) - ; return Nothing } ; - Right rdr_module -> do { + (cg_guts, details) <- {-# SCC "CoreTidy" #-} + tidyProgram hsc_env simpl_result ------------------- - -- RENAME and TYPECHECK - ------------------- - (tc_msgs, maybe_tc_result) - <- {-# SCC "Typecheck-Rename" #-} - tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module - - ; msg_act tc_msgs - ; case maybe_tc_result of { - Nothing -> return Nothing ; - Just tc_result -> do { + -- BUILD THE NEW ModIface and ModDetails + -- and emit external core if necessary + -- 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, 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 ------------------- - -- DESUGAR - ------------------- - ; (warns, maybe_ds_result) <- {-# SCC "DeSugar" #-} - deSugar hsc_env tc_result - ; msg_act (warns, emptyBag) - ; return maybe_ds_result - }}}}} + -- 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 ------------------------------ -hscFileCheck :: HscEnv -> MessageAction -> ModSummary -> IO HscResult -hscFileCheck hsc_env msg_act mod_summary = do { +hscFileCheck :: HscEnv -> ModSummary -> IO (Maybe HscChecked) +hscFileCheck hsc_env mod_summary = do { ------------------- -- PARSE ------------------- - ; let hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary) + ; let dflags = hsc_dflags hsc_env + hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary) hspp_buf = ms_hspp_buf mod_summary - ; maybe_parsed <- myParseModule (hsc_dflags hsc_env) hspp_file hspp_buf + ; maybe_parsed <- myParseModule dflags hspp_file hspp_buf ; case maybe_parsed of { - Left err -> do { msg_act (unitBag err, emptyBag) - ; return HscFail } ; + Left err -> do { printBagOfErrors dflags (unitBag err) + ; return Nothing } ; Right rdr_module -> do { ------------------- @@ -331,9 +659,9 @@ hscFileCheck hsc_env msg_act mod_summary = do { True{-save renamed syntax-} rdr_module - ; msg_act tc_msgs + ; printErrorsAndWarnings dflags tc_msgs ; case maybe_tc_result of { - Nothing -> return (HscChecked rdr_module Nothing Nothing); + Nothing -> return (Just (HscChecked rdr_module Nothing Nothing)); Just tc_result -> do let md = ModDetails { md_types = tcg_type_env tc_result, @@ -342,211 +670,31 @@ hscFileCheck hsc_env msg_act mod_summary = do { md_rules = [panic "no rules"] } -- Rules are CoreRules, not the -- RuleDecls we get out of the typechecker - return (HscChecked rdr_module - (tcg_rn_decls tc_result) + 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))) + md)))) }}}} ------------------------------- -hscBootBackEnd :: HscEnv -> ModSummary -> Maybe ModIface -> Maybe ModGuts -> IO HscResult --- For hs-boot files, there's no code generation to do - -hscBootBackEnd hsc_env mod_summary maybe_old_iface Nothing - = return HscFail -hscBootBackEnd hsc_env mod_summary maybe_old_iface (Just ds_result) - = do { (_cg_guts, details) <- simpleTidyPgm hsc_env ds_result - - ; (new_iface, no_change) - <- {-# SCC "MkFinalIface" #-} - mkIface hsc_env maybe_old_iface ds_result details - - ; writeIfaceFile hsc_env (ms_location mod_summary) new_iface no_change - - ; let { final_details = ModDetails { md_types = mg_types ds_result, - md_exports = mg_exports ds_result, - md_insts = mg_insts ds_result, - md_rules = mg_rules ds_result } } - -- And the answer is ... - ; dumpIfaceStats hsc_env - - ; return (HscRecomp final_details - new_iface - False False Nothing) - } - ------------------------------- -hscBackEnd :: HscEnv -> ModSummary -> Maybe ModIface -> Maybe ModGuts -> IO HscResult - -hscBackEnd hsc_env mod_summary maybe_old_iface Nothing - = return HscFail - -hscBackEnd hsc_env mod_summary maybe_old_iface (Just ds_result) - = do { -- OMITTED: - -- ; seqList imported_modules (return ()) - - let one_shot = isOneShot (ghcMode dflags) - dflags = hsc_dflags hsc_env - - ------------------- - -- 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) - - -- 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 - - ------------------- - -- SIMPLIFY - ------------------- - ; simpl_result <- {-# SCC "Core2Core" #-} - core2core hsc_env flat_result - - ------------------- - -- TIDY - ------------------- - ; let omit_prags = dopt Opt_OmitInterfacePragmas dflags - ; (cg_guts, details) <- {-# SCC "CoreTidy" #-} - if omit_prags - then simpleTidyPgm hsc_env simpl_result - else optTidyPgm hsc_env simpl_result - - -- Alive at this point: - -- tidy_result, pcs_final - -- hsc_env - - ------------------- - -- BUILD THE NEW ModIface and ModDetails - -- and emit external core if necessary - -- 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, no_change) - <- {-# SCC "MkFinalIface" #-} - mkIface hsc_env maybe_old_iface simpl_result details - - ; writeIfaceFile hsc_env (ms_location mod_summary) new_iface no_change - - -- 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 - - -- 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 $! details - - -- Emit external core - ; emitExternalCore dflags cg_guts - - ------------------- - -- CONVERT TO STG and COMPLETE CODE GENERATION - ; (stub_h_exists, stub_c_exists, maybe_bcos) - <- hscCodeGen dflags cg_guts - - -- And the answer is ... - ; dumpIfaceStats hsc_env - - ; return (HscRecomp final_details - final_iface - stub_h_exists stub_c_exists - maybe_bcos) - } - - - -hscCodeGen dflags - 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_dep_pkgs = dependencies } = do { - - let { 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 ; - - case hscTarget dflags of - HscNothing -> return (False, False, Nothing) - - HscInterpreted -> -#ifdef GHCI - do ----------------- 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 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 data_tycons 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 - - return (stub_h_exists, stub_c_exists, Nothing) - } - hscCmmFile :: DynFlags -> FilePath -> IO Bool hscCmmFile dflags filename = do - maybe_cmm <- parseCmmFile dflags filename + maybe_cmm <- parseCmmFile dflags (mkHomeModules []) filename case maybe_cmm of Nothing -> return False Just cmm -> do - codeOutput dflags no_mod NoStubs [] [cmm] + 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" } myParseModule dflags src_filename maybe_src_buf @@ -579,13 +727,13 @@ myParseModule dflags src_filename maybe_src_buf }} -myCoreToStg dflags this_mod prepd_binds +myCoreToStg dflags home_mods this_mod prepd_binds = do stg_binds <- {-# SCC "Core2Stg" #-} - coreToStg dflags prepd_binds + 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} @@ -666,7 +814,7 @@ hscTcExpr hsc_env expr Nothing -> return Nothing ; -- Parse error Just (Just (L _ (ExprStmt expr _ _))) -> tcRnExpr hsc_env icontext expr ; - Just other -> do { errorMsg ("not an expression: `" ++ expr ++ "'") ; + Just other -> do { errorMsg (hsc_dflags hsc_env) (text "not an expression:" <+> quotes (text expr)) ; return Nothing } ; } } @@ -680,7 +828,7 @@ hscKcType hsc_env str ; let icontext = hsc_IC hsc_env ; case maybe_type of { Just ty -> tcRnType hsc_env icontext ty ; - Just other -> do { errorMsg ("not an type: `" ++ str ++ "'") ; + Just other -> do { errorMsg (hsc_dflags hsc_env) (text "not an type:" <+> quotes (text str)) ; return Nothing } ; Nothing -> return Nothing } } #endif @@ -728,34 +876,6 @@ hscParseThing parser dflags str %************************************************************************ %* * -\subsection{Getting information about an identifer} -%* * -%************************************************************************ - -\begin{code} -#ifdef GHCI -hscGetInfo -- like hscStmt, but deals with a single identifier - :: HscEnv - -> String -- The identifier - -> IO [GetInfoResult] - -hscGetInfo hsc_env str - = do maybe_rdr_name <- hscParseIdentifier (hsc_dflags hsc_env) str - case maybe_rdr_name of { - Nothing -> return []; - Just (L _ rdr_name) -> do - - maybe_tc_result <- tcRnGetInfo hsc_env (hsc_IC hsc_env) rdr_name - - case maybe_tc_result of - Nothing -> return [] - Just things -> return things - } -#endif -\end{code} - -%************************************************************************ -%* * Desugar, simplify, convert to bytecode, and link an expression %* * %************************************************************************