X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FHscMain.lhs;h=953791a07f821346ab044202ee68f934a96ce316;hp=5da7b8dc4528675cff312fda563c4a2effd0d7c0;hb=2ac652a9bcd7a224f5680cd28848211b9c385088;hpb=2e9f2703b7509ff565061c2cd8f38eb8da2abcd3 diff --git a/ghc/compiler/main/HscMain.lhs b/ghc/compiler/main/HscMain.lhs index 5da7b8d..953791a 100644 --- a/ghc/compiler/main/HscMain.lhs +++ b/ghc/compiler/main/HscMain.lhs @@ -5,449 +5,522 @@ \section[GHC_Main]{Main driver for Glasgow Haskell compiler} \begin{code} -module HscMain ( HscResult(..), hscMain, +module HscMain ( + HscResult(..), + hscMain, newHscEnv, hscCmmFile, + hscBufferCheck, hscFileCheck, #ifdef GHCI - hscStmt, hscThing, + , hscStmt, hscTcExpr, hscKcType + , hscGetInfo, GetInfoResult + , compileExpr #endif - initPersistentCompilerState ) where + ) where #include "HsVersions.h" #ifdef GHCI -import Interpreter -import ByteCodeGen ( byteCodeGen ) -import CoreTidy ( tidyCoreExpr ) +import HsSyn ( Stmt(..), LStmt, LHsExpr, LHsType ) +import IfaceSyn ( IfaceDecl, IfaceInst ) +import CodeOutput ( outputForeignStubs ) +import ByteCodeGen ( byteCodeGen, coreExprToBCOs ) +import Linker ( HValue, linkExpr ) +import TidyPgm ( tidyCoreExpr ) import CorePrep ( corePrepExpr ) -import Rename ( renameStmt, renameRdrName ) -import RdrName ( rdrNameOcc, setRdrNameOcc ) -import RdrHsSyn ( RdrNameStmt ) -import OccName ( dataName, tcClsName, - occNameSpace, setOccNameSpace ) +import Flattening ( flattenExpr ) +import TcRnDriver ( tcRnStmt, tcRnExpr, tcRnGetInfo, tcRnType ) +import RdrName ( rdrNameOcc ) +import OccName ( occNameUserString ) import Type ( Type ) -import Id ( Id, idName, setGlobalIdDetails ) -import IdInfo ( GlobalIdDetails(VanillaGlobal) ) -import HscTypes ( InteractiveContext(..) ) import PrelNames ( iNTERACTIVE ) import StringBuffer ( stringToStringBuffer ) -import FastString ( mkFastString ) -import Maybes ( catMaybes ) +import Kind ( Kind ) +import Var ( Id ) +import CoreLint ( lintUnfolding ) +import DsMeta ( templateHaskellNames ) +import BasicTypes ( Fixity ) +import SrcLoc ( SrcLoc, noSrcLoc ) #endif -import HsSyn - -import RdrName ( mkRdrOrig ) -import Id ( idName ) -import IdInfo ( CafInfo(..), CgInfoEnv, CgInfo(..) ) -import StringBuffer ( hGetStringBuffer, freeStringBuffer ) +import RdrName ( RdrName ) +import HsSyn ( HsModule ) +import SrcLoc ( Located(..) ) +import StringBuffer ( hGetStringBuffer ) import Parser -import Lex ( PState(..), ParseResult(..) ) +import Lexer ( P(..), ParseResult(..), mkPState ) import SrcLoc ( mkSrcLoc ) -import Finder ( findModule ) -import Rename ( checkOldIface, renameModule, closeIfaceDecls ) -import Rules ( emptyRuleBase ) -import PrelInfo ( wiredInThingEnv, wiredInThings ) -import PrelRules ( builtinRules ) -import PrelNames ( knownKeyNames ) -import MkIface ( mkFinalIface ) -import TcModule -import InstEnv ( emptyInstEnv ) +import TcRnDriver ( tcRnModule, tcRnExtCore ) +import TcRnTypes ( TcGblEnv ) +import TcIface ( typecheckIface ) +import IfaceEnv ( initNameCache ) +import LoadIface ( ifaceStats, initExternalPackageState ) +import PrelInfo ( wiredInThings, basicKnownKeyNames ) +import RdrName ( GlobalRdrEnv ) +import MkIface ( checkOldIface, mkIface ) import Desugar +import Flattening ( flatten ) import SimplCore -import CoreUtils ( coreBindsSize ) -import CoreTidy ( tidyCorePgm ) +import TidyPgm ( tidyCorePgm ) import CorePrep ( corePrepPgm ) -import StgSyn import CoreToStg ( coreToStg ) +import Name ( Name, NamedThing(..) ) import SimplStg ( stg2stg ) import CodeGen ( codeGen ) +import CmmParse ( parseCmmFile ) import CodeOutput ( codeOutput ) -import Module ( ModuleName, moduleName, mkHomeModule, - moduleUserString ) import CmdLineOpts -import ErrUtils ( dumpIfSet_dyn, showPass, printError ) -import Util ( unJust ) +import DriverPhases ( isExtCoreFilename ) +import ErrUtils import UniqSupply ( mkSplitUniqSupply ) -import Bag ( consBag, emptyBag ) import Outputable import HscStats ( ppSourceStats ) import HscTypes -import FiniteMap ( FiniteMap, plusFM, emptyFM, addToFM ) -import OccName ( OccName ) -import Name ( Name, nameModule, nameOccName, getName, isGlobalName ) -import NameEnv ( emptyNameEnv, mkNameEnv ) -import Module ( Module ) - -import IOExts ( newIORef, readIORef, writeIORef, unsafePerformIO ) +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 Monad ( when ) import Maybe ( isJust, fromJust ) import IO +import DATA_IOREF ( newIORef, readIORef ) +\end{code} -import MkExternalCore ( emitExternalCore ) + +%************************************************************************ +%* * + Initialisation +%* * +%************************************************************************ + +\begin{code} +newHscEnv :: GhciMode -> DynFlags -> IO HscEnv +newHscEnv ghci_mode dflags + = do { eps_var <- newIORef initExternalPackageState + ; us <- mkSplitUniqSupply 'r' + ; nc_var <- newIORef (initNameCache us knownKeyNames) + ; return (HscEnv { hsc_mode = ghci_mode, + hsc_dflags = dflags, + hsc_HPT = emptyHomePackageTable, + hsc_EPS = eps_var, + hsc_NC = nc_var } ) } + + +knownKeyNames :: [Name] -- Put here to avoid loops involving DsMeta, + -- where templateHaskellNames are defined +knownKeyNames = map getName wiredInThings + ++ basicKnownKeyNames +#ifdef GHCI + ++ templateHaskellNames +#endif \end{code} %************************************************************************ %* * -\subsection{The main compiler pipeline} + The main compiler pipeline %* * %************************************************************************ \begin{code} data HscResult - -- compilation failed - = HscFail PersistentCompilerState -- updated PCS - -- concluded that it wasn't necessary - | HscNoRecomp PersistentCompilerState -- updated PCS - ModDetails -- new details (HomeSymbolTable additions) + -- Compilation failed + = HscFail + + -- In IDE mode: we just do the static/dynamic checks + | HscChecked (Located (HsModule RdrName)) (Maybe TcGblEnv) + + -- Concluded that it wasn't necessary + | HscNoRecomp ModDetails -- new details (HomeSymbolTable additions) ModIface -- new iface (if any compilation was done) - -- did recompilation - | HscRecomp PersistentCompilerState -- updated PCS - 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 -#ifdef GHCI - (Maybe ([UnlinkedBCO],ItblEnv)) -- interpreted code, if any -#else - (Maybe ()) -- no interpreted code whatsoever -#endif + (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 - :: GhciMode - -> DynFlags + :: HscEnv + -> MessageAction -- what to do with errors/warnings -> Module - -> ModuleLocation -- location info + -> ModLocation -- location info -> Bool -- True <=> source unchanged -> Bool -- True <=> have an object file (for msgs only) -> Maybe ModIface -- old interface, if available - -> HomeSymbolTable -- for home module ModDetails - -> HomeIfaceTable - -> PersistentCompilerState -- IN: persistent compiler state -> IO HscResult -hscMain ghci_mode dflags mod location source_unchanged have_object - maybe_old_iface hst hit pcs +hscMain hsc_env msg_act mod location + source_unchanged have_object maybe_old_iface = do { - showPass dflags ("Checking old interface for hs = " - ++ show (ml_hs_file location) - ++ ", hspp = " ++ show (ml_hspp_file location)); - - (pcs_ch, errs_found, (recomp_reqd, maybe_checked_iface)) - <- _scc_ "checkOldIface" - checkOldIface ghci_mode dflags hit hst pcs (ml_hi_file location) - source_unchanged maybe_old_iface; - - if errs_found then - return (HscFail pcs_ch) - else 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 ghci_mode dflags have_object mod location - maybe_checked_iface hst hit pcs_ch - }} + + ; what_next hsc_env msg_act have_object + mod location maybe_checked_iface + } --- we definitely expect to have the old interface available -hscNoRecomp ghci_mode dflags have_object - mod location (Just old_iface) hst hit pcs_ch - | ghci_mode == OneShot +-- 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 { - when (verbosity dflags > 0) $ - hPutStrLn stderr "compilation IS NOT required"; + compilationProgressMsg (hsc_dflags hsc_env) $ + "compilation IS NOT required"; + dumpIfaceStats hsc_env ; + let { bomb = panic "hscNoRecomp:OneShot" }; - return (HscNoRecomp pcs_ch bomb bomb) + return (HscNoRecomp bomb bomb) } | otherwise = do { - when (verbosity dflags >= 1) $ - hPutStrLn stderr ("Skipping " ++ - compMsg have_object mod location); - - -- CLOSURE - (pcs_cl, closure_errs, cl_hs_decls) - <- closeIfaceDecls dflags hit hst pcs_ch old_iface ; - if closure_errs then - return (HscFail pcs_cl) - else do { - - -- TYPECHECK - maybe_tc_result - <- typecheckIface dflags pcs_cl hst old_iface cl_hs_decls; - - case maybe_tc_result of { - Nothing -> return (HscFail pcs_cl); - Just (pcs_tc, new_details) -> - - return (HscNoRecomp pcs_tc new_details old_iface) - }}} - -compMsg use_object mod location = - mod_str ++ take (max 0 (16 - length mod_str)) (repeat ' ') - ++" ( " ++ unJust "hscRecomp" (ml_hs_file location) ++ ", " - ++ (if use_object - then unJust "hscRecomp" (ml_obj_file location) - else "interpreted") - ++ " )" - where mod_str = moduleUserString mod - - -hscRecomp ghci_mode dflags have_object - mod location maybe_checked_iface hst hit pcs_ch + 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 toInterp = dopt_HscLang dflags == HscInterpreted - ; let toNothing = dopt_HscLang dflags == HscNothing - - ; when (verbosity dflags >= 1) $ - hPutStrLn stderr ("Compiling " ++ - compMsg (not toInterp) mod location); + ; 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)) + + ; when (not one_shot) $ + compilationProgressMsg dflags $ + ("Compiling " ++ showModMsg (not toInterp) mod location); + + ; let hspp_file = expectJust "hscFrontEnd:hspp" (ml_hspp_file location) + ; front_res <- if toCore then + hscCoreFrontEnd hsc_env msg_act hspp_file + else + hscFileFrontEnd hsc_env msg_act hspp_file + + ; case front_res of + Left flure -> return flure; + Right ds_result -> do { + + + -- OMITTED: + -- ; seqList imported_modules (return ()) ------------------- - -- PARSE + -- FLATTENING ------------------- - ; maybe_parsed <- myParseModule dflags - (unJust "hscRecomp:hspp" (ml_hspp_file location)) - ; case maybe_parsed of { - Nothing -> return (HscFail pcs_ch); - Just rdr_module -> do { - ; let this_mod = mkHomeModule (hsModuleName rdr_module) - + ; 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 + ------------------- - -- RENAME + -- SIMPLIFY ------------------- - ; (pcs_rn, print_unqualified, maybe_rn_result) - <- _scc_ "Rename" - renameModule dflags hit hst pcs_ch this_mod rdr_module - ; case maybe_rn_result of { - Nothing -> return (HscFail pcs_ch{-was: pcs_rn-}); - Just (is_exported, new_iface, rn_hs_decls) -> do { - - -- In interactive mode, we don't want to discard any top-level entities at - -- all (eg. do not inline them away during simplification), and retain them - -- all in the TypeEnv so they are available from the command line. - -- - -- isGlobalName separates the user-defined top-level names from those - -- introduced by the type checker. - ; let dont_discard | ghci_mode == Interactive = isGlobalName - | otherwise = is_exported + ; simpl_result <- _scc_ "Core2Core" + core2core hsc_env flat_result ------------------- - -- TYPECHECK + -- TIDY ------------------- - ; maybe_tc_result - <- _scc_ "TypeCheck" typecheckModule dflags pcs_rn hst new_iface - print_unqualified rn_hs_decls - ; case maybe_tc_result of { - Nothing -> return (HscFail pcs_ch{-was: pcs_rn-}); - Just (pcs_tc, tc_result) -> do { - + ; 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 + ------------------- - -- DESUGAR + -- 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 <- _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 } + ------------------- - ; (ds_details, foreign_stuff) - <- _scc_ "DeSugar" - deSugar dflags pcs_tc hst this_mod print_unqualified tc_result - - ; pcs_middle - <- if ghci_mode == OneShot - then do init_pcs <- initPersistentCompilerState - init_prs <- initPersistentRenamerState - let - rules = pcs_rules pcs_tc - orig_tc = prsOrig (pcs_PRS pcs_tc) - new_prs = init_prs{ prsOrig=orig_tc } - - orig_tc `seq` rules `seq` new_prs `seq` - return init_pcs{ pcs_PRS = new_prs, - pcs_rules = rules } - else return pcs_tc + -- 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 (HscRecomp final_details + final_globals + final_iface + stub_h_exists stub_c_exists + maybe_bcos) + }} +hscCoreFrontEnd hsc_env msg_act hspp_file = do { ------------------- - -- SIMPLIFY + -- PARSE + ------------------- + ; inp <- readFile hspp_file + ; case parseCore inp 1 of + FailP s -> putMsg s{-ToDo: wrong-} >> return (Left HscFail) + OkP rdr_module -> do { + + ------------------- + -- RENAME and TYPECHECK ------------------- - ; simpl_details - <- _scc_ "Core2Core" - core2core dflags pcs_middle hst dont_discard ds_details + ; (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! + }}} + +hscFileFrontEnd hsc_env msg_act hspp_file = do { ------------------- - -- TIDY + -- PARSE ------------------- - ; cg_info_ref <- newIORef Nothing ; - ; let cg_info :: CgInfoEnv - cg_info = unsafePerformIO $ do { - maybe_cg_env <- readIORef cg_info_ref ; - case maybe_cg_env of - Just env -> return env - Nothing -> do { printError "Urk! Looked at CgInfo too early!"; - return emptyNameEnv } } - -- cg_info_ref will be filled in just after restOfCodeGeneration - -- Meanwhile, tidyCorePgm is careful not to look at cg_info! - - ; (pcs_simpl, tidy_details) - <- _scc_ "CoreTidy" - tidyCorePgm dflags this_mod pcs_middle cg_info simpl_details - - ; pcs_final <- if ghci_mode == OneShot then initPersistentCompilerState - else return pcs_simpl + ; maybe_parsed <- myParseModule (hsc_dflags hsc_env) hspp_file - -- alive at this point: - -- tidy_details - -- new_iface + ; case maybe_parsed of { + Left err -> do { msg_act (unitBag err, emptyBag) ; + ; return (Left HscFail) ; + }; + Right rdr_module -> do { - ; emitExternalCore dflags new_iface tidy_details ------------------- - -- PREPARE FOR CODE GENERATION + -- RENAME and TYPECHECK ------------------- - -- Do saturation and convert to A-normal form - ; prepd_details <- _scc_ "CorePrep" corePrepPgm dflags tidy_details + ; (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 { ------------------- - -- CONVERT TO STG and COMPLETE CODE GENERATION + -- DESUGAR ------------------- - ; let - ModDetails{md_binds=binds, md_types=env_tc} = prepd_details + ; (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); + }}}}} - local_tycons = typeEnvTyCons env_tc - local_classes = typeEnvClasses env_tc - imported_module_names = map ideclName (hsModuleImports rdr_module) +hscFileCheck hsc_env msg_act hspp_file = do { + ------------------- + -- PARSE + ------------------- + ; maybe_parsed <- myParseModule (hsc_dflags hsc_env) hspp_file - mod_name_to_Module nm - = do m <- findModule nm ; return (fst (fromJust m)) + ; case maybe_parsed of { + Left err -> do { msg_act (unitBag err, emptyBag) ; + ; return HscFail ; + }; + Right rdr_module -> hscBufferTypecheck hsc_env rdr_module msg_act + }} + + +-- 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. +hscBufferCheck :: HscEnv -> StringBuffer -> MessageAction -> IO HscResult +hscBufferCheck 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 + hscBufferTypecheck hsc_env rdr_module msg_act + +hscBufferTypecheck hsc_env rdr_module msg_act = do + (tc_msgs, maybe_tc_result) <- _scc_ "Typecheck-Rename" + tcRnModule hsc_env rdr_module + msg_act tc_msgs + case maybe_tc_result of + Nothing -> return (HscChecked rdr_module Nothing) + -- space leak on rdr_module! + Just r -> return (HscChecked rdr_module (Just r)) + + +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 { - (h_code,c_code,fe_binders) = foreign_stuff + ------------------- + -- PREPARE FOR CODE GENERATION + -- Do saturation and convert to A-normal form + prepd_binds <- _scc_ "CorePrep" + corePrepPgm dflags core_binds type_env; - ; imported_modules <- mapM mod_name_to_Module imported_module_names + case dopt_HscLang dflags of + HscNothing -> return (False, False, Nothing) - ; (stub_h_exists, stub_c_exists, maybe_bcos, final_iface ) - <- if toInterp + HscInterpreted -> #ifdef GHCI - then do - ----------------- Generate byte code ------------------ - (bcos,itbl_env) <- byteCodeGen dflags binds - local_tycons local_classes - - -- Fill in the code-gen info - writeIORef cg_info_ref (Just emptyNameEnv) - - ------------------ BUILD THE NEW ModIface ------------ - final_iface <- _scc_ "MkFinalIface" - mkFinalIface ghci_mode dflags location - maybe_checked_iface new_iface tidy_details - - return ( False, False, Just (bcos,itbl_env), final_iface ) + 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 - then error "GHC not compiled with interpreter" + panic "GHC not compiled with interpreter" #endif - else do - ----------------- Convert to STG ------------------ - (stg_binds, cost_centre_info, stg_back_end_info) - <- _scc_ "CoreToStg" - myCoreToStg dflags this_mod binds - - -- Fill in the code-gen info for the earlier tidyCorePgm - writeIORef cg_info_ref (Just stg_back_end_info) - - ------------------ BUILD THE NEW ModIface ------------ - final_iface <- _scc_ "MkFinalIface" - mkFinalIface ghci_mode dflags location - maybe_checked_iface new_iface tidy_details - - if toNothing - then do - return (False, False, Nothing, final_iface) - else do - ------------------ Code generation ------------------ - abstractC <- _scc_ "CodeGen" - codeGen dflags this_mod imported_modules - cost_centre_info fe_binders - local_tycons stg_binds - - ------------------ Code output ----------------------- - (stub_h_exists, stub_c_exists) - <- codeOutput dflags this_mod local_tycons - binds stg_binds - c_code h_code abstractC - - return (stub_h_exists, stub_c_exists, Nothing, final_iface) - - ; let final_details = tidy_details {md_binds = []} - - - -- and the answer is ... - ; return (HscRecomp pcs_final - final_details - final_iface - stub_h_exists stub_c_exists - maybe_bcos) - }}}}}}} + 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) + } + + +hscCmmFile :: DynFlags -> FilePath -> IO Bool +hscCmmFile dflags filename = do + maybe_cmm <- parseCmmFile dflags filename + case maybe_cmm of + Nothing -> return False + Just cmm -> do + codeOutput dflags no_mod NoStubs noDependencies [cmm] + return True + where + no_mod = panic "hscCmmFile: no_mod" + myParseModule dflags src_filename = do -------------------------- Parser ---------------- showPass dflags "Parser" _scc_ "Parser" do + buf <- hGetStringBuffer src_filename - buf <- hGetStringBuffer True{-expand tabs-} src_filename + let loc = mkSrcLoc (mkFastString src_filename) 1 0 - let glaexts | dopt Opt_GlasgowExts dflags = 1# - | otherwise = 0# + case unP parseModule (mkPState buf loc dflags) of { - case parseModule buf PState{ bol = 0#, atbol = 1#, - context = [], glasgow_exts = glaexts, - loc = mkSrcLoc (_PK_ src_filename) 1 } of { + PFailed span err -> return (Left (mkPlainErrMsg span err)); - PFailed err -> do { hPutStrLn stderr (showSDoc err); - freeStringBuffer buf; - return Nothing }; - - POk _ rdr_module@(HsModule mod_name _ _ _ _ _ _) -> do { + POk _ rdr_module -> do { dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_module) ; 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 tidy_binds +myCoreToStg dflags this_mod prepd_binds = do - () <- coreBindsSize tidy_binds `seq` return () - -- TEMP: the above call zaps some space usage allocated by the - -- simplifier, which for reasons I don't understand, persists - -- thoroughout code generation - - stg_binds <- _scc_ "Core2Stg" coreToStg dflags tidy_binds - - (stg_binds2, cost_centre_info) - <- _scc_ "Core2Stg" stg2stg dflags this_mod stg_binds - - let env_rhs :: CgInfoEnv - env_rhs = mkNameEnv [ (idName bndr, CgInfo (stgRhsArity rhs) caf_info) - | (bind,_) <- stg_binds2, - let caf_info - | stgBindHasCafRefs bind = MayHaveCafRefs - | otherwise = NoCafRefs, - (bndr,rhs) <- stgBindPairs bind ] - - return (stg_binds2, cost_centre_info, env_rhs) - where - stgBindPairs (StgNonRec _ b r) = [(b,r)] - stgBindPairs (StgRec _ prs) = prs + stg_binds <- _scc_ "Core2Stg" + coreToStg dflags prepd_binds + (stg_binds2, cost_centre_info) <- _scc_ "Core2Stg" + stg2stg dflags this_mod stg_binds + return (stg_binds2, cost_centre_info) \end{code} @@ -457,22 +530,6 @@ myCoreToStg dflags this_mod tidy_binds %* * %************************************************************************ -\begin{code} -#ifdef GHCI -hscStmt - :: DynFlags - -> HomeSymbolTable - -> HomeIfaceTable - -> PersistentCompilerState -- IN: persistent compiler state - -> InteractiveContext -- Context for compiling - -> String -- The statement - -> Bool -- just treat it as an expression - -> IO ( PersistentCompilerState, - Maybe ( [Id], - Type, - UnlinkedBCOExpr) ) -\end{code} - When the UnlinkedBCOExpr is linked you get an HValue of type IO [HValue] When you run it you get a list of HValues that should be @@ -500,100 +557,103 @@ A naked expression returns a singleton Name [it]. result not showable) ==> error \begin{code} -hscStmt dflags hst hit pcs0 icontext stmt just_expr - = do { maybe_stmt <- hscParseStmt dflags stmt - ; case maybe_stmt of - Nothing -> return (pcs0, Nothing) - Just parsed_stmt -> do { - - let { notExprStmt (ExprStmt _ _ _) = False; - notExprStmt _ = True - }; - - if (just_expr && notExprStmt parsed_stmt) - then do hPutStrLn stderr ("not an expression: `" ++ stmt ++ "'") - return (pcs0, Nothing) - else do { - - -- Rename it - (pcs1, print_unqual, maybe_renamed_stmt) - <- renameStmt dflags hit hst pcs0 - iNTERACTIVE icontext parsed_stmt - - ; case maybe_renamed_stmt of - Nothing -> return (pcs0, Nothing) - Just (bound_names, rn_stmt) -> do { - - -- Typecheck it - maybe_tc_return <- - if just_expr - then case rn_stmt of { (ExprStmt e _ _, decls) -> - typecheckExpr dflags pcs1 hst (ic_type_env icontext) - print_unqual iNTERACTIVE (e,decls) } - else typecheckStmt dflags pcs1 hst (ic_type_env icontext) - print_unqual iNTERACTIVE bound_names rn_stmt - - ; case maybe_tc_return of - Nothing -> return (pcs0, Nothing) - Just (pcs2, tc_expr, bound_ids, ty) -> do { - - -- Desugar it - ds_expr <- deSugarExpr dflags pcs2 hst iNTERACTIVE print_unqual tc_expr - - -- Simplify it - ; simpl_expr <- simplifyExpr dflags pcs2 hst ds_expr +#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)) - -- Tidy it (temporary, until coreSat does cloning) - ; tidy_expr <- tidyCoreExpr simpl_expr +hscStmt hsc_env icontext stmt + = do { maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) stmt + ; case maybe_stmt of { + Nothing -> return Nothing ; -- Parse error + Just Nothing -> return Nothing ; -- Empty line + Just (Just parsed_stmt) -> do { -- The real stuff - -- Prepare for codegen - ; prepd_expr <- corePrepExpr dflags tidy_expr + -- Rename and typecheck it + maybe_tc_result + <- tcRnStmt hsc_env icontext parsed_stmt - -- Convert to BCOs - ; bcos <- coreExprToBCOs dflags prepd_expr + ; case maybe_tc_result of { + Nothing -> return Nothing ; + Just (new_ic, bound_names, tc_expr) -> do { + + -- Then desugar, code gen, and link it + ; hval <- compileExpr hsc_env iNTERACTIVE + (ic_rn_gbl_env new_ic) + (ic_type_env new_ic) + tc_expr + + ; return (Just (new_ic, bound_names, hval)) + }}}}} - ; let - -- Make all the bound ids "global" ids, now that - -- they're notionally top-level bindings. This is - -- important: otherwise when we come to compile an expression - -- using these ids later, the byte code generator will consider - -- the occurrences to be free rather than global. - global_bound_ids = map globaliseId bound_ids; - globaliseId id = setGlobalIdDetails id VanillaGlobal +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 + = do { maybe_stmt <- hscParseStmt (hsc_dflags hsc_env) expr + ; case maybe_stmt of { + Nothing -> return Nothing ; -- Parse error + Just (Just (L _ (ExprStmt expr _))) + -> tcRnExpr hsc_env icontext expr ; + Just other -> do { errorMsg ("not an expression: `" ++ 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 + = do { maybe_type <- hscParseType (hsc_dflags hsc_env) str + ; case maybe_type of { + Just ty -> tcRnType hsc_env icontext ty ; + Just other -> do { errorMsg ("not an type: `" ++ str ++ "'") ; + return Nothing } ; + Nothing -> return Nothing } } +\end{code} - ; return (pcs2, Just (global_bound_ids, ty, bcos)) +\begin{code} +hscParseStmt :: DynFlags -> String -> IO (Maybe (Maybe (LStmt RdrName))) +hscParseStmt = hscParseThing parseStmt - }}}}} +hscParseType :: DynFlags -> String -> IO (Maybe (LHsType RdrName)) +hscParseType = hscParseThing parseType -hscParseStmt :: DynFlags -> String -> IO (Maybe RdrNameStmt) -hscParseStmt dflags str - = do -------------------------- Parser ---------------- - showPass dflags "Parser" - _scc_ "Parser" do +hscParseIdentifier :: DynFlags -> String -> IO (Maybe (Located RdrName)) +hscParseIdentifier = hscParseThing parseIdentifier - buf <- stringToStringBuffer str +hscParseThing :: Outputable thing + => Lexer.P thing + -> DynFlags -> String + -> IO (Maybe thing) + -- Nothing => Parse error (message already printed) + -- Just x => success +hscParseThing parser dflags str + = do showPass dflags "Parser" + _scc_ "Parser" do - let glaexts | dopt Opt_GlasgowExts dflags = 1# - | otherwise = 0# + buf <- stringToStringBuffer str - case parseStmt buf PState{ bol = 0#, atbol = 1#, - context = [], glasgow_exts = glaexts, - loc = mkSrcLoc SLIT("") 1 } of { + let loc = mkSrcLoc FSLIT("") 1 0 - PFailed err -> do { hPutStrLn stderr (showSDoc err); --- Not yet implemented in <4.11 freeStringBuffer buf; - return Nothing }; + case unP parser (mkPState buf loc dflags) of { - -- no stmt: the line consisted of just space or comments - POk _ Nothing -> return Nothing; + PFailed span err -> do { printError span err; + 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. - --freeStringBuffer buf; - 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} @@ -606,116 +666,101 @@ hscParseStmt dflags str \begin{code} #ifdef GHCI -hscThing -- like hscStmt, but deals with a single identifier - :: DynFlags - -> HomeSymbolTable - -> HomeIfaceTable - -> PersistentCompilerState -- IN: persistent compiler state +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 ( PersistentCompilerState, - [TyThing] ) + -> IO [GetInfoResult] -hscThing dflags hst hit pcs0 icontext str - = do maybe_rdr_name <- myParseIdentifier dflags str +hscGetInfo hsc_env ic str + = do maybe_rdr_name <- hscParseIdentifier (hsc_dflags hsc_env) str case maybe_rdr_name of { - Nothing -> return (pcs0, []); - Just rdr_name -> do - - -- if the identifier is a constructor (begins with an - -- upper-case letter), then we need to consider both - -- constructor and type class identifiers. - let rdr_names - | occNameSpace occ == dataName = [ rdr_name, tccls_name ] - | otherwise = [ rdr_name ] - where - occ = rdrNameOcc rdr_name - tccls_occ = setOccNameSpace occ tcClsName - tccls_name = setRdrNameOcc rdr_name tccls_occ - - (pcs, unqual, maybe_rn_result) <- - renameRdrName dflags hit hst pcs0 iNTERACTIVE icontext rdr_names - - case maybe_rn_result of { - Nothing -> return (pcs, []); - Just (names, decls) -> do { - - maybe_pcs <- typecheckExtraDecls dflags pcs hst unqual - iNTERACTIVE decls; - - case maybe_pcs of { - Nothing -> return (pcs, []); - Just pcs -> - let maybe_ty_things = map (lookupType hst (pcs_PTE pcs)) names - in - return (pcs, catMaybes maybe_ty_things) } - }}} - -myParseIdentifier dflags str - = do buf <- stringToStringBuffer str - - let glaexts | dopt Opt_GlasgowExts dflags = 1# - | otherwise = 0# - - case parseIdentifier buf - PState{ bol = 0#, atbol = 1#, - context = [], glasgow_exts = glaexts, - loc = mkSrcLoc SLIT("") 1 } of - - PFailed err -> do { hPutStrLn stderr (showSDoc err); - freeStringBuffer buf; - return Nothing } - - POk _ rdr_name -> do { --should, but can't: freeStringBuffer buf; - return (Just rdr_name) } + 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} + +%************************************************************************ +%* * + Desugar, simplify, convert to bytecode, and link an expression +%* * +%************************************************************************ + +\begin{code} +#ifdef GHCI +compileExpr :: HscEnv + -> Module -> GlobalRdrEnv -> TypeEnv + -> LHsExpr Id + -> IO HValue + +compileExpr hsc_env this_mod rdr_env type_env tc_expr + = do { let { dflags = hsc_dflags hsc_env ; + lint_on = dopt Opt_DoCoreLinting dflags } + + -- Desugar it + ; ds_expr <- deSugarExpr hsc_env this_mod rdr_env type_env tc_expr + + -- Flatten it + ; flat_expr <- flattenExpr hsc_env ds_expr + + -- Simplify it + ; simpl_expr <- simplifyExpr dflags flat_expr + + -- Tidy it (temporary, until coreSat does cloning) + ; tidy_expr <- tidyCoreExpr simpl_expr + + -- Prepare for codegen + ; prepd_expr <- corePrepExpr dflags tidy_expr + + -- Lint if necessary + -- ToDo: improve SrcLoc + ; if lint_on then + case lintUnfolding noSrcLoc [] prepd_expr of + Just err -> pprPanic "compileExpr" err + Nothing -> return () + else + return () + + -- Convert to BCOs + ; bcos <- coreExprToBCOs dflags prepd_expr + + -- link it + ; hval <- linkExpr hsc_env bcos + + ; return hval + } #endif \end{code} + %************************************************************************ %* * -\subsection{Initial persistent state} + Statistics on reading interfaces %* * %************************************************************************ \begin{code} -initPersistentCompilerState :: IO PersistentCompilerState -initPersistentCompilerState - = do prs <- initPersistentRenamerState - return ( - PCS { pcs_PIT = emptyIfaceTable, - pcs_PTE = wiredInThingEnv, - pcs_insts = emptyInstEnv, - pcs_rules = emptyRuleBase, - pcs_PRS = prs - } - ) - -initPersistentRenamerState :: IO PersistentRenamerState - = do us <- mkSplitUniqSupply 'r' - return ( - PRS { prsOrig = NameSupply { nsUniqs = us, - nsNames = initOrigNames, - nsIPs = emptyFM }, - prsDecls = (emptyNameEnv, 0), - prsInsts = (emptyBag, 0), - prsRules = foldr add_rule (emptyBag, 0) builtinRules, - prsImpMods = emptyFM - } - ) +dumpIfaceStats :: HscEnv -> IO () +dumpIfaceStats hsc_env + = do { eps <- readIORef (hsc_EPS hsc_env) + ; dumpIfSet (dump_if_trace || dump_rn_stats) + "Interface statistics" + (ifaceStats eps) } where - add_rule (name,rule) (rules, n_rules) - = (gated_decl `consBag` rules, n_rules+1) - where - gated_decl = (gate_fn, (mod, IfaceRuleOut rdr_name rule)) - mod = nameModule name - rdr_name = mkRdrOrig (moduleName mod) (nameOccName name) - gate_fn vis_fn = vis_fn name -- Load the rule whenever name is visible - -initOrigNames :: FiniteMap (ModuleName,OccName) Name -initOrigNames - = grab knownKeyNames `plusFM` grab (map getName wiredInThings) - where - grab names = foldl add emptyFM names - add env name - = addToFM env (moduleName (nameModule name), nameOccName name) name + dflags = hsc_dflags hsc_env + dump_rn_stats = dopt Opt_D_dump_rn_stats dflags + dump_if_trace = dopt Opt_D_dump_if_trace dflags \end{code}