\section[GHC_Main]{Main driver for Glasgow Haskell compiler}
\begin{code}
-module HscMain (
- HscResult(..),
- hscMain, newHscEnv, hscCmmFile,
- hscFileCheck,
- hscParseIdentifier,
+module HscMain
+ ( newHscEnv, hscCmmFile
+ , hscFileCheck
+ , hscParseIdentifier
#ifdef GHCI
- hscStmt, hscTcExpr, hscKcType,
- 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"
import Var ( Id )
import Module ( emptyModuleEnv, ModLocation(..) )
import RdrName ( GlobalRdrEnv, RdrName )
-import HsSyn ( HsModule, LHsBinds, HsGroup )
+import HsSyn ( HsModule, LHsBinds, HsGroup, LIE, LImportDecl )
import SrcLoc ( Located(..) )
import StringBuffer ( hGetStringBuffer, stringToStringBuffer )
import Parser
import LoadIface ( ifaceStats, initExternalPackageState )
import PrelInfo ( wiredInThings, basicKnownKeyNames )
import MkIface ( checkOldIface, mkIface, writeIfaceFile )
-import Desugar
+import Desugar ( deSugar )
import Flattening ( flatten )
-import SimplCore
+import SimplCore ( core2core )
import TidyPgm ( tidyProgram, mkBootModDetails )
import CorePrep ( corePrepPgm )
import CoreToStg ( coreToStg )
import ParserCoreUtils
import FastString
import Maybes ( expectJust )
-import Bag ( unitBag, emptyBag )
+import Bag ( unitBag )
import Monad ( when )
-import Maybe ( isJust )
import IO
import DATA_IOREF ( newIORef, readIORef )
\end{code}
%* *
%************************************************************************
-\begin{code}
-data HscResult
- -- Compilation failed
- = HscFail
-
- -- In IDE mode: we just do the static/dynamic checks
- | HscChecked
- (Located (HsModule RdrName)) -- parsed
- (Maybe (HsGroup Name)) -- renamed
- (Maybe (LHsBinds Id, GlobalRdrEnv, ModDetails)) -- typechecked
-
- -- Concluded that it wasn't necessary
- | HscNoRecomp ModDetails -- new details (HomeSymbolTable additions)
- ModIface -- new iface (if any compilation was done)
-
- -- Did recompilation
- | HscRecomp ModDetails -- new details (HomeSymbolTable additions)
- ModIface -- new iface (if any compilation was done)
- Bool -- stub_h exists
- Bool -- stub_c exists
- (Maybe CompiledByteCode)
-
-
--- What to do when we have compiler error or warning messages
-type MessageAction = Messages -> IO ()
-
- -- no errors or warnings; the individual passes
- -- (parse/rename/typecheck) print messages themselves
+ --------------------------------
+ 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.
-hscMain
- :: 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 HscResult
-
-hscMain hsc_env mod_summary
- source_unchanged have_object maybe_old_iface
- mb_mod_index
- = do {
- (recomp_reqd, maybe_checked_iface) <-
- {-# SCC "checkOldIface" #-}
- checkOldIface hsc_env mod_summary
- source_unchanged maybe_old_iface;
-
- let no_old_iface = not (isJust maybe_checked_iface)
- what_next | recomp_reqd || no_old_iface = hscRecomp
- | otherwise = hscNoRecomp
-
- ; what_next hsc_env mod_summary have_object
- maybe_checked_iface
- mb_mod_index
- }
-
-
-------------------------------
-hscNoRecomp hsc_env mod_summary
- have_object (Just old_iface)
- mb_mod_index
- | isOneShot (ghcMode (hsc_dflags hsc_env))
- = do {
- compilationProgressMsg (hsc_dflags hsc_env) $
- "compilation IS NOT required";
- dumpIfaceStats hsc_env ;
-
- let { bomb = panic "hscNoRecomp:OneShot" };
- return (HscNoRecomp bomb bomb)
- }
- | otherwise
- = do { compilationProgressMsg (hsc_dflags hsc_env) $
- (showModuleIndex mb_mod_index ++
- "Skipping " ++ showModMsg have_object mod_summary)
-
- ; new_details <- {-# SCC "tcRnIface" #-}
- initIfaceCheck hsc_env $
- typecheckIface old_iface ;
- ; dumpIfaceStats hsc_env
-
- ; return (HscNoRecomp new_details old_iface)
- }
-
-hscNoRecomp hsc_env mod_summary
- have_object Nothing
- mb_mod_index
- = panic "hscNoRecomp" -- hscNoRecomp definitely expects to
- -- have the old interface available
+\begin{code}
-------------------------------
-hscRecomp hsc_env mod_summary
- have_object maybe_old_iface
- mb_mod_index
- = case ms_hsc_src mod_summary of
- HsSrcFile -> do
- front_res <- hscFileFrontEnd hsc_env mod_summary mb_mod_index
- case ghcMode (hsc_dflags hsc_env) of
- JustTypecheck -> hscBootBackEnd hsc_env mod_summary maybe_old_iface front_res
- _ -> hscBackEnd hsc_env mod_summary maybe_old_iface front_res
-
- HsBootFile -> do
- front_res <- hscFileFrontEnd hsc_env mod_summary mb_mod_index
- hscBootBackEnd hsc_env mod_summary maybe_old_iface front_res
-
- ExtCoreFile -> do
- front_res <- hscCoreFrontEnd hsc_env mod_summary
- hscBackEnd hsc_env mod_summary maybe_old_iface front_res
-
-hscCoreFrontEnd hsc_env mod_summary = do {
+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 -> errorMsg (hsc_dflags hsc_env) (text s{-ToDo: wrong-}) >> return Nothing
+ FailP s -> do errorMsg (hsc_dflags hsc_env) (text s{-ToDo: wrong-})
+ return Nothing
OkP rdr_module -> do {
-------------------
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
; return maybe_ds_result
}}}}}
-------------------------------
-
-hscFileCheck :: HscEnv -> ModSummary -> IO HscResult
-hscFileCheck hsc_env mod_summary = do {
- -------------------
- -- PARSE
- -------------------
- ; let dflags = hsc_dflags hsc_env
- hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary)
- hspp_buf = ms_hspp_buf mod_summary
-
- ; maybe_parsed <- myParseModule dflags hspp_file hspp_buf
-
- ; case maybe_parsed of {
- Left err -> do { printBagOfErrors dflags (unitBag err)
- ; return HscFail } ;
- Right rdr_module -> do {
-
- -------------------
- -- RENAME and TYPECHECK
- -------------------
- (tc_msgs, maybe_tc_result)
- <- _scc_ "Typecheck-Rename"
- tcRnModule hsc_env (ms_hsc_src mod_summary)
- True{-save renamed syntax-}
- rdr_module
-
- ; printErrorsAndWarnings dflags tc_msgs
- ; case maybe_tc_result of {
- Nothing -> return (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
- return (HscChecked rdr_module
- (tcg_rn_decls tc_result)
- (Just (tcg_binds tc_result,
- tcg_rdr_env tc_result,
- md)))
- }}}}
-
-------------------------------
-hscBootBackEnd :: HscEnv -> ModSummary -> Maybe ModIface -> Maybe ModGuts -> IO HscResult
--- For hs-boot files, there's no code generation to do
-
-hscBootBackEnd hsc_env mod_summary maybe_old_iface Nothing
- = return HscFail
-hscBootBackEnd hsc_env mod_summary maybe_old_iface (Just ds_result)
- = do { 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 details new_iface
- False False Nothing)
- }
-
-------------------------------
-hscBackEnd :: HscEnv -> ModSummary -> Maybe ModIface -> Maybe ModGuts -> IO HscResult
-
-hscBackEnd hsc_env mod_summary maybe_old_iface Nothing
- = return HscFail
-
-hscBackEnd hsc_env mod_summary maybe_old_iface (Just ds_result)
+--------------------------------------------------------------
+-- BackEnds
+--------------------------------------------------------------
+
+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 ())
- let one_shot = isOneShot (ghcMode dflags)
- dflags = hsc_dflags hsc_env
+ let dflags = hsc_dflags hsc_env
-------------------
-- FLATTENING
; writeIfaceFile hsc_env (ms_location mod_summary) new_iface no_change
- -- Space leak reduction: throw away the new interface if
- -- we're in one-shot mode; we won't be needing it any
- -- more.
- ; final_iface <- if one_shot then return (error "no final iface")
- else return new_iface
-
- -- Build the final ModDetails (except in one-shot mode, where
- -- we won't need this information after compilation).
- ; final_details <- if one_shot then return (error "no final details")
- else return $! details
-
-- Emit external core
; emitExternalCore dflags cg_guts
-------------------
- -- CONVERT TO STG and COMPLETE CODE GENERATION
- ; (stub_h_exists, stub_c_exists, maybe_bcos)
- <- hscCodeGen dflags (ms_location mod_summary) cg_guts
-
- -- And the answer is ...
- ; dumpIfaceStats hsc_env
-
- ; return (HscRecomp final_details
- final_iface
- stub_h_exists stub_c_exists
- maybe_bcos)
+ -- 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
-hscCodeGen dflags location
- 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 } = do {
-
- let { data_tycons = filter isDataTyCon tycons } ;
- -- cg_tycons includes newtypes, for the benefit of External Core,
- -- but we don't generate any code for newtypes
+------------------------------
+hscFileCheck :: HscEnv -> ModSummary -> IO (Maybe HscChecked)
+hscFileCheck hsc_env mod_summary = do {
+ -------------------
+ -- PARSE
-------------------
- -- PREPARE FOR CODE GENERATION
- -- Do saturation and convert to A-normal form
- prepd_binds <- {-# SCC "CorePrep" #-}
- corePrepPgm dflags core_binds data_tycons ;
+ ; let dflags = hsc_dflags hsc_env
+ hspp_file = expectJust "hscFileFrontEnd" (ms_hspp_file mod_summary)
+ hspp_buf = ms_hspp_buf mod_summary
- case hscTarget dflags of
- HscNothing -> return (False, False, Nothing)
+ ; maybe_parsed <- myParseModule dflags hspp_file hspp_buf
- HscInterpreted ->
-#ifdef GHCI
- do ----------------- Generate byte code ------------------
- comp_bc <- byteCodeGen dflags prepd_binds data_tycons
-
- ------------------ Create f-x-dynamic C-side stuff ---
- (istub_h_exists, istub_c_exists)
- <- outputForeignStubs dflags this_mod location foreign_stubs
-
- return ( istub_h_exists, istub_c_exists, Just comp_bc )
-#else
- panic "GHC not compiled with interpreter"
-#endif
+ ; case maybe_parsed of {
+ Left err -> do { printBagOfErrors dflags (unitBag err)
+ ; return Nothing } ;
+ Right rdr_module -> do {
+
+ -------------------
+ -- RENAME and TYPECHECK
+ -------------------
+ (tc_msgs, maybe_tc_result)
+ <- _scc_ "Typecheck-Rename"
+ tcRnModule hsc_env (ms_hsc_src mod_summary)
+ True{-save renamed syntax-}
+ rdr_module
- other ->
- do
- ----------------- 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_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
projects / ghc-hetmet.git / blobdiff