X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FHscMain.lhs;h=124d9f0803ff22ed6a40824f9f6cfce7cbe13e8e;hb=3c96346b3685f83885cea7906b0dbc536d7695f6;hp=04a149e1f6e8d00cea74a369cecb5e91bf55f01a;hpb=3b758ccb12e736cf1bf9ce7d4ab6542b84ad0305;p=ghc-hetmet.git diff --git a/ghc/compiler/main/HscMain.lhs b/ghc/compiler/main/HscMain.lhs index 04a149e..124d9f0 100644 --- a/ghc/compiler/main/HscMain.lhs +++ b/ghc/compiler/main/HscMain.lhs @@ -5,67 +5,74 @@ \section[GHC_Main]{Main driver for Glasgow Haskell compiler} \begin{code} -module HscMain ( - HscResult(..), hscMain, newHscEnv, hscCmmFile, hscBufferFrontEnd +module HscMain + ( newHscEnv, hscCmmFile + , hscFileCheck + , hscParseIdentifier #ifdef GHCI - , hscStmt, hscTcExpr, hscKcType - , hscGetInfo, GetInfoResult - , compileExpr + , hscStmt, hscTcExpr, hscKcType + , compileExpr #endif - ) where + , hscCompileOneShot -- :: Compiler HscStatus + , hscCompileMake -- :: Compiler (HscStatus, ModIface, ModDetails) + , hscCompileInteractive -- :: Compiler (InteractiveStatus, ModIface, ModDetails) + , HscStatus (..) + , InteractiveStatus (..) + , HscChecked (..) + ) where #include "HsVersions.h" #ifdef GHCI -import HsSyn ( Stmt(..), LStmt, LHsExpr, LHsType ) -import IfaceSyn ( IfaceDecl, IfaceInst ) +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, tcRnGetInfo, tcRnType ) -import RdrName ( rdrNameOcc ) -import OccName ( occNameUserString ) +import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnType ) import Type ( Type ) import PrelNames ( iNTERACTIVE ) -import StringBuffer ( stringToStringBuffer ) import Kind ( Kind ) -import Var ( Id ) import CoreLint ( lintUnfolding ) import DsMeta ( templateHaskellNames ) -import BasicTypes ( Fixity ) +import SrcLoc ( noSrcLoc ) +import VarEnv ( emptyTidyEnv ) #endif -import RdrName ( RdrName ) -import HsSyn ( HsModule ) -import SrcLoc ( SrcLoc, noSrcLoc, Located(..) ) -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 DynFlags import ErrUtils import UniqSupply ( mkSplitUniqSupply ) @@ -75,14 +82,10 @@ import HscTypes import MkExternalCore ( emitExternalCore ) import ParserCore import ParserCoreUtils -import Module ( Module, ModLocation(..), showModMsg ) import FastString import Maybes ( expectJust ) -import StringBuffer ( StringBuffer ) -import Bag ( unitBag, emptyBag ) - +import Bag ( unitBag ) import Monad ( when ) -import Maybe ( isJust, fromJust ) import IO import DATA_IOREF ( newIORef, readIORef ) \end{code} @@ -95,16 +98,20 @@ 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, @@ -123,116 +130,281 @@ knownKeyNames = map getName wiredInThings %* * %************************************************************************ -\begin{code} -data HscResult - -- Compilation failed - = HscFail + -------------------------------- + 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', 'make', or 'interactive' +mode. 'One-shot' mode targets hard-code, 'make' mode targets hard-code +and nothing, and 'interactive' mode targets byte-code. The modes are +kept separate because of their different types. +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. 'Make' mode is like 'one-shot' except that we +keep the resulting ModIface and ModDetails. 'Make' mode doesn't target +byte-code since that require us to return the newly compiled byte-code. +'Interactive' mode is similar to 'make' 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 IDE mode: we just do the static/dynamic checks - | HscChecked (Located (HsModule RdrName)) +\begin{code} - -- Concluded that it wasn't necessary - | HscNoRecomp ModDetails -- new details (HomeSymbolTable additions) - ModIface -- new iface (if any compilation was done) +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 + +type NoRecomp result = HscEnv -> ModSummary -> Bool -> ModIface -> Maybe (Int,Int) -> IO result +type FrontEnd core = HscEnv -> ModSummary -> Maybe (Int,Int) -> IO (Maybe core) +type BackEnd core prepCore = HscEnv -> ModSummary -> Maybe ModIface -> core -> IO prepCore +type CodeGen prepCore result = HscEnv -> ModSummary -> prepCore -> IO result + +type Compiler result = HscEnv + -> 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 (Maybe result) + + +-- This functions checks if recompilation is necessary and +-- then combines the FrontEnd, BackEnd and CodeGen to a +-- working compiler. +hscMkCompiler :: NoRecomp result -- What to do when recompilation isn't required. + -> FrontEnd core + -> BackEnd core prepCore + -> CodeGen prepCore result + -> Compiler result +hscMkCompiler norecomp frontend backend codegen + hsc_env mod_summary source_unchanged + have_object mbOldIface mbModIndex + = do (recomp_reqd, mbCheckedIface) + <- {-# SCC "checkOldIface" #-} + checkOldIface hsc_env mod_summary + source_unchanged mbOldIface + case mbCheckedIface of + Just iface | not recomp_reqd + -> do result <- norecomp hsc_env mod_summary have_object iface mbModIndex + return (Just result) + _otherwise + -> do mbCore <- frontend hsc_env mod_summary mbModIndex + case mbCore of + Nothing + -> return Nothing + Just core + -> do prepCore <- backend hsc_env mod_summary + mbCheckedIface core + result <- codegen hsc_env mod_summary prepCore + return (Just result) + +-------------------------------------------------------------- +-- Compilers +-------------------------------------------------------------- + +-- 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) + compiler + = case ms_hsc_src mod_summary of + ExtCoreFile + -> mkComp hscCoreFrontEnd hscNewBackEnd hscCodeGenOneShot +-- 1 2 3 4 5 6 7 8 9 + HsSrcFile + -> mkComp hscFileFrontEnd hscNewBackEnd hscCodeGenOneShot + HsBootFile + -> mkComp hscFileFrontEnd hscNewBootBackEnd + (hscCodeGenConst (HscRecomp False)) + +-- Compile Haskell, boot and extCore in --make mode. +hscCompileMake :: Compiler (HscStatus, ModIface, ModDetails) +hscCompileMake hsc_env mod_summary + = compiler hsc_env mod_summary + where mkComp = hscMkCompiler norecompMake + backend = case hscTarget (hsc_dflags hsc_env) of + HscNothing -> hscCodeGenNothing + _other -> hscCodeGenMake + compiler + = case ms_hsc_src mod_summary of + ExtCoreFile + -> mkComp hscCoreFrontEnd hscNewBackEnd backend + HsSrcFile + -> mkComp hscFileFrontEnd hscNewBackEnd backend + HsBootFile + -> mkComp hscFileFrontEnd hscNewBootBackEnd hscCodeGenIdentity + + +-- Compile Haskell, extCore to bytecode. +hscCompileInteractive :: Compiler (InteractiveStatus, ModIface, ModDetails) +hscCompileInteractive hsc_env mod_summary = + hscMkCompiler norecompInteractive frontend hscNewBackEnd hscCodeGenInteractive + hsc_env mod_summary + where 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 'hscCompileMake' instead." + +-------------------------------------------------------------- +-- NoRecomp handlers +-------------------------------------------------------------- + +norecompOneShot :: a -> NoRecomp a +norecompOneShot a hsc_env mod_summary + have_object old_iface + mb_mod_index + = do compilationProgressMsg (hsc_dflags hsc_env) $ + "compilation IS NOT required" + dumpIfaceStats hsc_env + return a + +norecompMake :: NoRecomp (HscStatus, ModIface, ModDetails) +norecompMake = norecompWorker HscNoRecomp + +norecompInteractive :: NoRecomp (InteractiveStatus, ModIface, ModDetails) +norecompInteractive = norecompWorker InteractiveNoRecomp + +norecompWorker :: a -> NoRecomp (a, ModIface, ModDetails) +norecompWorker a hsc_env mod_summary have_object + old_iface mb_mod_index + = 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 (a, old_iface, new_details) + +-------------------------------------------------------------- +-- FrontEnds +-------------------------------------------------------------- + +hscCoreFrontEnd :: FrontEnd ModGuts +hscCoreFrontEnd hsc_env mod_summary mb_mod_index = 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 -> do { + + ------------------- + -- RENAME and TYPECHECK + ------------------- + ; (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 hsc_env mod_summary mb_mod_index = do { + ------------------- + -- DISPLAY PROGRESS MESSAGE + ------------------- + ; let dflags = hsc_dflags hsc_env + one_shot = isOneShot (ghcMode dflags) + toInterp = hscTarget dflags == HscInterpreted + ; when (not one_shot) $ + compilationProgressMsg dflags $ + (showModuleIndex mb_mod_index ++ + "Compiling " ++ showModMsg (not toInterp) mod_summary) + + ------------------- + -- PARSE + ------------------- + ; let hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary) + hspp_buf = ms_hspp_buf mod_summary - -- 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) + ; maybe_parsed <- myParseModule dflags hspp_file hspp_buf + ; case maybe_parsed of { + Left err -> do { printBagOfErrors dflags (unitBag err) + ; return Nothing } ; + Right rdr_module -> do { --- What to do when we have compiler error or warning messages -type MessageAction = Messages -> IO () + ------------------- + -- RENAME and TYPECHECK + ------------------- + (tc_msgs, maybe_tc_result) + <- {-# SCC "Typecheck-Rename" #-} + tcRnModule hsc_env (ms_hsc_src mod_summary) False rdr_module - -- no errors or warnings; the individual passes - -- (parse/rename/typecheck) print messages themselves + ; printErrorsAndWarnings dflags tc_msgs + ; case maybe_tc_result of { + Nothing -> return Nothing ; + Just tc_result -> do { -hscMain - :: HscEnv - -> MessageAction -- what to do with errors/warnings - -> 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 msg_act 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 msg_act have_object - mod location maybe_checked_iface - } - - --- hscNoRecomp definitely expects to have the old interface available -hscNoRecomp hsc_env msg_act have_object - mod location (Just old_iface) - | isOneShot (hsc_mode 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) $ - ("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 msg_act have_object - mod location maybe_checked_iface - = do { - -- what target are we shooting for? - ; let one_shot = isOneShot (hsc_mode hsc_env) - ; 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)) + ------------------- + -- DESUGAR + ------------------- + ; (warns, maybe_ds_result) <- {-# SCC "DeSugar" #-} + deSugar hsc_env tc_result + ; printBagOfWarnings dflags warns + ; return maybe_ds_result + }}}}} - ; when (not one_shot) $ - compilationProgressMsg dflags $ - ("Compiling " ++ showModMsg (not toInterp) mod location); - - ; front_res <- if toCore then - hscCoreFrontEnd hsc_env msg_act location - else - hscFileFrontEnd hsc_env msg_act location +-------------------------------------------------------------- +-- BackEnds +-------------------------------------------------------------- - ; case front_res of - Left flure -> return flure; - Right ds_result -> do { +hscNewBootBackEnd :: BackEnd ModGuts (HscStatus, ModIface, ModDetails) +hscNewBootBackEnd hsc_env mod_summary maybe_old_iface ds_result + = do details <- mkBootModDetails 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 + -- And the answer is ... + dumpIfaceStats hsc_env + return (HscRecomp False, new_iface, details) +hscNewBackEnd :: BackEnd ModGuts (ModIface, ModDetails, CgGuts) +hscNewBackEnd hsc_env mod_summary maybe_old_iface ds_result + = do { -- OMITTED: + -- ; seqList imported_modules (return ()) - -- OMITTED: - -- ; seqList imported_modules (return ()) + let dflags = hsc_dflags hsc_env ------------------- -- FLATTENING ------------------- - ; flat_result <- _scc_ "Flattening" + ; flat_result <- {-# SCC "Flattening" #-} flatten hsc_env ds_result @@ -262,17 +434,14 @@ hscRecomp hsc_env msg_act have_object ------------------- -- SIMPLIFY ------------------- - ; simpl_result <- _scc_ "Core2Core" + ; simpl_result <- {-# SCC "Core2Core" #-} core2core hsc_env flat_result ------------------- -- TIDY ------------------- - ; tidy_result <- _scc_ "CoreTidy" - tidyCorePgm hsc_env simpl_result - - -- Emit external core - ; emitExternalCore dflags tidy_result + ; (cg_guts, details) <- {-# SCC "CoreTidy" #-} + tidyProgram hsc_env simpl_result -- Alive at this point: -- tidy_result, pcs_final @@ -284,193 +453,194 @@ hscRecomp hsc_env msg_act 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 + + ; writeIfaceFile hsc_env (ms_location mod_summary) new_iface no_change + + -- Emit external core + ; emitExternalCore dflags cg_guts ------------------- - -- CONVERT TO STG and COMPLETE CODE GENERATION - ; (stub_h_exists, stub_c_exists, maybe_bcos) - <- hscBackEnd dflags tidy_result + -- Return the prepared code. + ; return (new_iface, details, cg_guts) + } + +-------------------------------------------------------------- +-- Code generators +-------------------------------------------------------------- + +-- Don't output any code. +hscCodeGenNothing :: CodeGen (ModIface, ModDetails, CgGuts) (HscStatus, ModIface, ModDetails) +hscCodeGenNothing hsc_env mod_summary (iface, details, cgguts) + = return (HscRecomp False, iface, details) + +-- Generate code and return both the new ModIface and the ModDetails. +hscCodeGenMake :: CodeGen (ModIface, ModDetails, CgGuts) (HscStatus, ModIface, ModDetails) +hscCodeGenMake hsc_env mod_summary (iface, details, cgguts) + = do hasStub <- hscCodeGenCompile hsc_env mod_summary cgguts + return (HscRecomp hasStub, iface, details) + +-- Here we don't need the ModIface and ModDetails anymore. +hscCodeGenOneShot :: CodeGen (ModIface, ModDetails, CgGuts) HscStatus +hscCodeGenOneShot hsc_env mod_summary (_, _, cgguts) + = do hasStub <- hscCodeGenCompile hsc_env mod_summary cgguts + return (HscRecomp hasStub) + +hscCodeGenCompile :: CodeGen CgGuts Bool +hscCodeGenCompile hsc_env mod_summary cgguts + = 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 + +hscCodeGenIdentity :: CodeGen a a +hscCodeGenIdentity hsc_env mod_summary a = return a + +hscCodeGenConst :: b -> CodeGen a b +hscCodeGenConst b hsc_env mod_summary a = return b + +hscCodeGenInteractive :: CodeGen (ModIface, ModDetails, CgGuts) + (InteractiveStatus, ModIface, ModDetails) +hscCodeGenInteractive hsc_env mod_summary (iface, details, cgguts) +#ifdef GHCI + = 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, + 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 ; + ----------------- 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 - -- And the answer is ... - ; dumpIfaceStats hsc_env - ; return (HscRecomp final_details - final_globals - final_iface - stub_h_exists stub_c_exists - maybe_bcos) - }} +------------------------------ -hscCoreFrontEnd hsc_env msg_act 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 -> putMsg s{-ToDo: wrong-} >> return (Left HscFail) - 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 (Left HscFail); - Just mod_guts -> return (Right mod_guts) - -- No desugaring to do! - }}} - + ; let dflags = hsc_dflags hsc_env + hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary) + hspp_buf = ms_hspp_buf mod_summary -hscFileFrontEnd hsc_env msg_act 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 { - Left err -> do { msg_act (unitBag err, emptyBag) ; - ; return (Left HscFail) ; - }; - Right rdr_module -> hscFrontEnd hsc_env msg_act rdr_module - }} - --- Perform static/dynamic checks on the source code in a StringBuffer --- This is a temporary solution: it'll read in interface files lazily, whereas --- we probably want to use the compilation manager to load in all the modules --- in a project. -hscBufferFrontEnd :: HscEnv -> StringBuffer -> MessageAction -> IO HscResult -hscBufferFrontEnd hsc_env buffer msg_act = do - let loc = mkSrcLoc (mkFastString "*edit*") 1 0 - showPass (hsc_dflags hsc_env) "Parser" - case unP parseModule (mkPState buffer loc (hsc_dflags hsc_env)) of - PFailed span err -> do - msg_act (emptyBag, unitBag (mkPlainErrMsg span err)) - return HscFail - POk _ rdr_module -> do - r <- hscFrontEnd hsc_env msg_act rdr_module - case r of - Left r -> return r - Right _ -> return (HscChecked rdr_module) - - - -hscFrontEnd hsc_env msg_act rdr_module = do { - ------------------- - -- RENAME and TYPECHECK - ------------------- - ; (tc_msgs, maybe_tc_result) <- _scc_ "Typecheck-Rename" - tcRnModule hsc_env rdr_module - ; msg_act tc_msgs - ; 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 - ------------------- - ; (warns, maybe_ds_result) <- _scc_ "DeSugar" - deSugar hsc_env tc_result - ; msg_act (warns, emptyBag) - ; 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 - - return (stub_h_exists, stub_c_exists, Nothing) - } + ; 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 filename + maybe_cmm <- parseCmmFile dflags (mkHomeModules []) filename case maybe_cmm of Nothing -> return False Just cmm -> do - codeOutput dflags no_mod NoStubs noDependencies [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 + = -------------------------- 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 @@ -490,13 +660,13 @@ myParseModule dflags src_filename }} -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} @@ -538,11 +708,10 @@ 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 ; -- Parse error @@ -550,8 +719,8 @@ hscStmt hsc_env icontext stmt 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 ; @@ -563,46 +732,49 @@ 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 { Nothing -> return Nothing ; -- Parse error - Just (Just (L _ (ExprStmt expr _))) + 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 } ; } } hscKcType -- Find the kind of a type :: HscEnv - -> InteractiveContext -- Context for compiling -> String -- The type -> IO (Maybe Kind) -hscKcType hsc_env icontext str +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 ("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 \end{code} \begin{code} +#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 @@ -614,8 +786,8 @@ hscParseThing :: Outputable thing -- Nothing => Parse error (message already printed) -- Just x => success hscParseThing parser dflags str - = do showPass dflags "Parser" - _scc_ "Parser" do + = showPass dflags "Parser" >> + {-# SCC "Parser" #-} do buf <- stringToStringBuffer str @@ -633,42 +805,6 @@ hscParseThing parser dflags str 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 -type GetInfoResult = (String, (IfaceDecl, Fixity, SrcLoc, [(IfaceInst,SrcLoc)])) - -hscGetInfo -- like hscStmt, but deals with a single identifier - :: HscEnv - -> InteractiveContext -- Context for compiling - -> String -- The identifier - -> IO [GetInfoResult] - -hscGetInfo hsc_env ic 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 ic rdr_name - - let -- str' is the the naked occurrence name - -- after stripping off qualification and parens (+) - str' = occNameUserString (rdrNameOcc rdr_name) - - case maybe_tc_result of { - Nothing -> return [] ; - Just things -> return [(str', t) | t <- things] - }} -#endif \end{code} %************************************************************************ @@ -698,7 +834,7 @@ 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 @@ -742,3 +878,19 @@ 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} +