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