\section[GHC_Main]{Main driver for Glasgow Haskell compiler}
\begin{code}
-module HscMain ( HscResult(..), hscMain,
+module HscMain ( HscResult(..), hscMain,
#ifdef GHCI
hscStmt, hscThing, hscModuleContents,
#endif
#ifdef GHCI
import Interpreter
import ByteCodeGen ( byteCodeGen )
-import CoreTidy ( tidyCoreExpr )
+import TidyPgm ( tidyCoreExpr )
import CorePrep ( corePrepExpr )
-import Rename ( renameStmt, renameRdrName, slurpIface )
+import Rename ( renameStmt, renameRdrName, slurpIface )
import RdrName ( rdrNameOcc, setRdrNameOcc )
import RdrHsSyn ( RdrNameStmt )
import OccName ( dataName, tcClsName,
import Type ( Type )
import Id ( Id, idName, setGlobalIdDetails )
import IdInfo ( GlobalIdDetails(VanillaGlobal) )
-import Name ( isLocalName )
+import Name ( isInternalName )
import NameEnv ( lookupNameEnv )
import Module ( lookupModuleEnv )
import RdrName ( rdrEnvElts )
import PrelNames ( iNTERACTIVE )
import StringBuffer ( stringToStringBuffer )
-import FastString ( mkFastString )
import Maybes ( catMaybes )
import List ( nub )
import IdInfo ( CafInfo(..), CgInfoEnv, CgInfo(..) )
import StringBuffer ( hGetStringBuffer, freeStringBuffer )
import Parser
-import Lex ( PState(..), ParseResult(..) )
+import Lex ( ParseResult(..), ExtFlags(..), mkPState )
import SrcLoc ( mkSrcLoc )
import Finder ( findModule )
-import Rename ( checkOldIface, renameModule, closeIfaceDecls )
+import Rename ( checkOldIface, renameModule, renameExtCore,
+ closeIfaceDecls, RnResult(..) )
import Rules ( emptyRuleBase )
import PrelInfo ( wiredInThingEnv, wiredInThings )
import PrelRules ( builtinRules )
-import PrelNames ( knownKeyNames )
+import PrelNames ( knownKeyNames, gHC_PRIM_Name )
import MkIface ( mkFinalIface )
import TcModule
import InstEnv ( emptyInstEnv )
import Desugar
+import Flattening ( flatten, flattenExpr )
import SimplCore
import CoreUtils ( coreBindsSize )
-import CoreTidy ( tidyCorePgm )
+import TidyPgm ( tidyCorePgm )
import CorePrep ( corePrepPgm )
import StgSyn
import CoreToStg ( coreToStg )
import SimplStg ( stg2stg )
import CodeGen ( codeGen )
-import CodeOutput ( codeOutput )
+import CodeOutput ( codeOutput, outputForeignStubs )
import Module ( ModuleName, moduleName, mkHomeModule )
import CmdLineOpts
import DriverState ( v_HCHeader )
+import DriverPhases ( isExtCore_file )
import ErrUtils ( dumpIfSet_dyn, showPass, printError )
-import Util ( unJust )
import UniqSupply ( mkSplitUniqSupply )
import Bag ( consBag, emptyBag )
import HscTypes
import FiniteMap ( FiniteMap, plusFM, emptyFM, addToFM )
import OccName ( OccName )
-import Name ( Name, nameModule, nameOccName, getName, isGlobalName )
+import Name ( Name, nameModule, nameOccName, getName )
import NameEnv ( emptyNameEnv, mkNameEnv )
import Module ( Module )
+import FastString
+import Maybes ( expectJust )
+import Util ( seqList )
import IOExts ( newIORef, readIORef, writeIORef,
unsafePerformIO )
import IO
import MkExternalCore ( emitExternalCore )
+import ParserCore
+import ParserCoreUtils
+
\end{code}
mod location maybe_checked_iface hst hit pcs_ch
= do {
-- what target are we shooting for?
- ; let toInterp = dopt_HscLang dflags == HscInterpreted
+ ; let toInterp = dopt_HscLang dflags == HscInterpreted
; let toNothing = dopt_HscLang dflags == HscNothing
+ ; let toCore = isJust (ml_hs_file location) &&
+ isExtCore_file (fromJust (ml_hs_file location))
; when (ghci_mode /= OneShot && verbosity dflags >= 1) $
hPutStrLn stderr ("Compiling " ++
showModMsg (not toInterp) mod location);
+
+ ; front_res <-
+ (if toCore then hscCoreFrontEnd else hscFrontEnd)
+ ghci_mode dflags location hst hit pcs_ch
+ ; case front_res of
+ Left flure -> return flure;
+ Right (this_mod, rdr_module,
+ dont_discard, new_iface,
+ pcs_tc, ds_details, foreign_stuff) -> do {
+
+ let {
+ imported_module_names =
+ filter (/= gHC_PRIM_Name) $
+ map ideclName (hsModuleImports rdr_module);
+
+ imported_modules =
+ map (moduleNameToModule hit (pcs_PIT pcs_tc))
+ imported_module_names;
+ }
+
+ -- force this out now, so we don't keep a hold of rdr_module or pcs_tc
+ ; seqList imported_modules (return ())
-------------------
- -- PARSE
- -------------------
- ; 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)
-
- -------------------
- -- RENAME
- -------------------
- ; (pcs_rn, print_unqual, maybe_rn_result)
- <- _scc_ "Rename"
- renameModule dflags ghci_mode hit hst pcs_ch this_mod rdr_module
- ; case maybe_rn_result of {
- Nothing -> return (HscFail pcs_ch);
- Just (dont_discard, new_iface, rn_result) -> do {
-
- -------------------
- -- TYPECHECK
- -------------------
- ; maybe_tc_result
- <- _scc_ "TypeCheck"
- typecheckModule dflags pcs_rn hst print_unqual rn_result
- ; case maybe_tc_result of {
- Nothing -> return (HscFail pcs_ch);
- Just (pcs_tc, tc_result) -> do {
-
- -------------------
- -- DESUGAR
+ -- FLATTENING
-------------------
- ; (ds_details, foreign_stuff)
- <- _scc_ "DeSugar"
- deSugar dflags pcs_tc hst this_mod print_unqual tc_result
+ ; flat_details
+ <- _scc_ "Flattening"
+ flatten dflags pcs_tc hst ds_details
; pcs_middle
<- _scc_ "pcs_middle"
pcs_rules = rules }
else return pcs_tc
+-- Should we remove bits of flat_details at this point?
+-- ; flat_details <- case flat_details of
+-- ModDetails { md_binds = binds } ->
+-- return ModDetails { md_binds = binds,
+-- md_rules = [],
+-- md_types = emptyTypeEnv,
+-- md_insts = [] }
+
-- alive at this point:
-- pcs_middle
-- foreign_stuff
- -- ds_details
- -- new_iface
+ -- flat_details
+ -- imported_modules (seq'd)
+ -- new_iface
-------------------
-- SIMPLIFY
-------------------
; simpl_details
<- _scc_ "Core2Core"
- core2core dflags pcs_middle hst dont_discard ds_details
+ core2core dflags pcs_middle hst dont_discard flat_details
-------------------
-- TIDY
local_tycons = typeEnvTyCons env_tc
local_classes = typeEnvClasses env_tc
- imported_module_names = map ideclName (hsModuleImports rdr_module)
-
- mod_name_to_Module nm
- = do m <- findModule nm ; return (fst (fromJust m))
-
(h_code, c_code, headers, fe_binders) = foreign_stuff
-- turn the list of headers requested in foreign import
--
foreign_headers =
unlines
- . map (\fname -> "#include \"" ++ _UNPK_ fname ++ "\"")
+ . map (\fname -> "#include \"" ++ unpackFS fname ++ "\"")
. reverse
$ headers
; fhdrs <- readIORef v_HCHeader
; writeIORef v_HCHeader (fhdrs ++ foreign_headers)
- ; imported_modules <- mapM mod_name_to_Module imported_module_names
-
; (stub_h_exists, stub_c_exists, maybe_bcos, final_iface )
<- if toInterp
#ifdef GHCI
mkFinalIface ghci_mode dflags location
maybe_checked_iface new_iface tidy_details
- return ( False, False, Just (bcos,itbl_env), final_iface )
+ ------------------ Create f-x-dynamic C-side stuff ---
+ (istub_h_exists, istub_c_exists)
+ <- outputForeignStubs dflags c_code h_code
+
+ return ( istub_h_exists, istub_c_exists,
+ Just (bcos,itbl_env), final_iface )
#else
then error "GHC not compiled with interpreter"
#endif
final_iface
stub_h_exists stub_c_exists
maybe_bcos)
- }}}}}}}
+ }}
+
+hscCoreFrontEnd ghci_mode dflags location hst hit pcs_ch = do {
+ -------------------
+ -- PARSE
+ -------------------
+ ; inp <- readFile (expectJust "hscCoreFrontEnd:hspp" (ml_hspp_file location))
+ ; case parseCore inp 1 of
+ FailP s -> hPutStrLn stderr s >> return (Left (HscFail pcs_ch));
+ OkP rdr_module -> do {
+ ; let this_mod = mkHomeModule (hsModuleName rdr_module)
+
+ -------------------
+ -- RENAME
+ -------------------
+ ; (pcs_rn, print_unqual, maybe_rn_result)
+ <- renameExtCore dflags hit hst pcs_ch this_mod rdr_module
+ ; case maybe_rn_result of {
+ Nothing -> return (Left (HscFail pcs_ch));
+ Just (dont_discard, new_iface, rn_decls) -> do {
+
+ -------------------
+ -- TYPECHECK
+ -------------------
+ ; maybe_tc_result
+ <- _scc_ "TypeCheck"
+ typecheckCoreModule dflags pcs_rn hst new_iface rn_decls
+ ; case maybe_tc_result of {
+ Nothing -> return (Left (HscFail pcs_ch));
+ Just (pcs_tc, tc_result) -> do {
+
+ -------------------
+ -- DESUGAR
+ -------------------
+ ; (ds_details, foreign_stuff) <- deSugarCore tc_result
+ ; return (Right (this_mod, rdr_module, dont_discard, new_iface,
+ pcs_tc, ds_details, foreign_stuff))
+ }}}}}}
+
+
+hscFrontEnd ghci_mode dflags location hst hit pcs_ch = do {
+ -------------------
+ -- PARSE
+ -------------------
+ ; maybe_parsed <- myParseModule dflags
+ (expectJust "hscRecomp:hspp" (ml_hspp_file location))
+ ; case maybe_parsed of {
+ Nothing -> return (Left (HscFail pcs_ch));
+ Just rdr_module -> do {
+ ; let this_mod = mkHomeModule (hsModuleName rdr_module)
+
+ -------------------
+ -- RENAME
+ -------------------
+ ; (pcs_rn, print_unqual, maybe_rn_result)
+ <- _scc_ "Rename"
+ renameModule dflags ghci_mode hit hst pcs_ch this_mod rdr_module
+ ; case maybe_rn_result of {
+ Nothing -> return (Left (HscFail pcs_ch));
+ Just (dont_discard, new_iface, rn_result) -> do {
+
+ -------------------
+ -- TYPECHECK
+ -------------------
+ ; maybe_tc_result
+ <- _scc_ "TypeCheck"
+ typecheckModule dflags pcs_rn hst print_unqual rn_result
+ ; case maybe_tc_result of {
+ Nothing -> return (Left (HscFail pcs_ch));
+ Just (pcs_tc, tc_result) -> do {
+
+ -------------------
+ -- DESUGAR
+ -------------------
+ ; (ds_details, foreign_stuff)
+ <- _scc_ "DeSugar"
+ deSugar dflags pcs_tc hst this_mod print_unqual tc_result
+ ; return (Right (this_mod, rdr_module, dont_discard, new_iface,
+ pcs_tc, ds_details, foreign_stuff))
+ }}}}}}}
+
myParseModule dflags src_filename
= do -------------------------- Parser ----------------
showPass dflags "Parser"
_scc_ "Parser" do
+ buf <- hGetStringBuffer src_filename
- buf <- hGetStringBuffer True{-expand tabs-} src_filename
-
- let glaexts | dopt Opt_GlasgowExts dflags = 1#
- | otherwise = 0#
+ let exts = ExtFlags {glasgowExtsEF = dopt Opt_GlasgowExts dflags,
+ parrEF = dopt Opt_PArr dflags}
+ loc = mkSrcLoc (mkFastString src_filename) 1
- case parseModule buf PState{ bol = 0#, atbol = 1#,
- context = [], glasgow_exts = glaexts,
- loc = mkSrcLoc (_PK_ src_filename) 1 } of {
+ case parseModule buf (mkPState loc exts) of {
PFailed err -> do { hPutStrLn stderr (showSDoc err);
freeStringBuffer buf;
-- Desugar it
ds_expr <- deSugarExpr dflags pcs2 hst iNTERACTIVE print_unqual tc_expr
+ -- Flatten it
+ ; flat_expr <- flattenExpr dflags pcs2 hst ds_expr
+
-- Simplify it
- ; simpl_expr <- simplifyExpr dflags pcs2 hst ds_expr
+ ; simpl_expr <- simplifyExpr dflags pcs2 hst flat_expr
-- Tidy it (temporary, until coreSat does cloning)
; tidy_expr <- tidyCoreExpr simpl_expr
buf <- stringToStringBuffer str
- let glaexts | dopt Opt_GlasgowExts dflags = 1#
- | otherwise = 0#
+ let exts = ExtFlags {glasgowExtsEF = dopt Opt_GlasgowExts dflags,
+ parrEF = dopt Opt_PArr dflags}
+ loc = mkSrcLoc FSLIT("<interactive>") 1
- case parseStmt buf PState{ bol = 0#, atbol = 1#,
- context = [], glasgow_exts = glaexts,
- loc = mkSrcLoc SLIT("<interactive>") 1 } of {
+ case parseStmt buf (mkPState loc exts) of {
PFailed err -> do { hPutStrLn stderr (showSDoc err);
-- Not yet implemented in <4.11 freeStringBuffer buf;
Nothing -> return (pcs, []);
Just pcs ->
let do_lookup n
- | isLocalName n = lookupNameEnv (ic_type_env ic) n
+ | isInternalName n = lookupNameEnv (ic_type_env ic) n
| otherwise = lookupType hst (pcs_PTE pcs) n
maybe_ty_things = map do_lookup names
myParseIdentifier dflags str
= do buf <- stringToStringBuffer str
- let glaexts | dopt Opt_GlasgowExts dflags = 1#
- | otherwise = 0#
+ let exts = ExtFlags {glasgowExtsEF = dopt Opt_GlasgowExts dflags,
+ parrEF = dopt Opt_PArr dflags}
+ loc = mkSrcLoc FSLIT("<interactive>") 1
- case parseIdentifier buf
- PState{ bol = 0#, atbol = 1#,
- context = [], glasgow_exts = glaexts,
- loc = mkSrcLoc SLIT("<interactive>") 1 } of
+ case parseIdentifier buf (mkPState loc exts) of
PFailed err -> do { hPutStrLn stderr (showSDoc err);
freeStringBuffer buf;
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