%
% (c) The GRASP/AQUA Project, Glasgow University, 1993-2000
%
+
\section[GHC_Main]{Main driver for Glasgow Haskell compiler}
\begin{code}
module HscMain ( HscResult(..), hscMain,
#ifdef GHCI
- hscStmt,
+ hscStmt, hscThing, hscModuleContents,
#endif
initPersistentCompilerState ) where
#include "HsVersions.h"
#ifdef GHCI
-import RdrHsSyn ( RdrNameStmt )
-import Rename ( renameStmt )
+import Interpreter
import ByteCodeGen ( byteCodeGen )
-import Id ( Id, idName )
+import CoreTidy ( tidyCoreExpr )
+import CorePrep ( corePrepExpr )
+import Rename ( renameStmt, renameRdrName, slurpIface )
+import RdrName ( rdrNameOcc, setRdrNameOcc )
+import RdrHsSyn ( RdrNameStmt )
+import OccName ( dataName, tcClsName,
+ occNameSpace, setOccNameSpace )
+import Type ( Type )
+import Id ( Id, idName, setGlobalIdDetails )
import IdInfo ( GlobalIdDetails(VanillaGlobal) )
-import HscTypes ( InteractiveContext(..), TyThing(..) )
+import Name ( isLocalName )
+import NameEnv ( lookupNameEnv )
+import Module ( lookupModuleEnv )
+import RdrName ( rdrEnvElts )
+import PrelNames ( iNTERACTIVE )
+import StringBuffer ( stringToStringBuffer )
+import FastString ( mkFastString )
+import Maybes ( catMaybes )
+
+import List ( nub )
#endif
import HsSyn
-import StringBuffer ( hGetStringBuffer,
- stringToStringBuffer, freeStringBuffer )
+import RdrName ( mkRdrOrig )
+import Id ( idName )
+import IdInfo ( CafInfo(..), CgInfoEnv, CgInfo(..) )
+import StringBuffer ( hGetStringBuffer, freeStringBuffer )
import Parser
-import Lex ( PState(..), ParseResult(..) )
+import Lex ( PState(..), ParseResult(..), ExtFlags(..), mkPState )
import SrcLoc ( mkSrcLoc )
+import Finder ( findModule )
import Rename ( checkOldIface, renameModule, closeIfaceDecls )
import Rules ( emptyRuleBase )
import PrelInfo ( wiredInThingEnv, wiredInThings )
-import PrelNames ( vanillaSyntaxMap, knownKeyNames, iNTERACTIVE )
-import MkIface ( completeIface, writeIface, pprIface )
-import Type ( Type )
+import PrelRules ( builtinRules )
+import PrelNames ( knownKeyNames )
+import MkIface ( mkFinalIface )
import TcModule
import InstEnv ( emptyInstEnv )
import Desugar
+import Flattening ( flatten, flattenExpr )
import SimplCore
import CoreUtils ( coreBindsSize )
import CoreTidy ( tidyCorePgm )
-import CoreSat
-import CoreTidy ( tidyCoreExpr )
+import CorePrep ( corePrepPgm )
+import StgSyn
import CoreToStg ( coreToStg )
import SimplStg ( stg2stg )
import CodeGen ( codeGen )
import CodeOutput ( codeOutput )
-import Module ( ModuleName, moduleName, mkHomeModule,
- moduleUserString )
+import Module ( ModuleName, moduleName, mkHomeModule )
import CmdLineOpts
-import ErrUtils ( dumpIfSet_dyn, showPass )
+import DriverState ( v_HCHeader )
+import ErrUtils ( dumpIfSet_dyn, showPass, printError )
import Util ( unJust )
import UniqSupply ( mkSplitUniqSupply )
-import Bag ( emptyBag )
+import Bag ( consBag, emptyBag )
import Outputable
-import Interpreter
-import CmStaticInfo ( GhciMode(..) )
import HscStats ( ppSourceStats )
-import HscTypes ( ModDetails, ModIface(..), PersistentCompilerState(..),
- PersistentRenamerState(..), ModuleLocation(..),
- HomeSymbolTable,
- NameSupply(..), PackageRuleBase, HomeIfaceTable,
- typeEnvClasses, typeEnvTyCons, emptyIfaceTable
- )
+import HscTypes
import FiniteMap ( FiniteMap, plusFM, emptyFM, addToFM )
import OccName ( OccName )
import Name ( Name, nameModule, nameOccName, getName, isGlobalName )
-import NameEnv ( emptyNameEnv )
-import Module ( Module, lookupModuleEnvByName )
+import NameEnv ( emptyNameEnv, mkNameEnv )
+import Module ( Module )
+
+import IOExts ( newIORef, readIORef, writeIORef,
+ unsafePerformIO )
import Monad ( when )
-import Maybe ( isJust )
+import Maybe ( isJust, fromJust )
import IO
+
+import MkExternalCore ( emitExternalCore )
\end{code}
| HscRecomp PersistentCompilerState -- updated PCS
ModDetails -- new details (HomeSymbolTable additions)
ModIface -- new iface (if any compilation was done)
- (Maybe String) -- generated stub_h filename (in TMPDIR)
- (Maybe String) -- generated stub_c filename (in TMPDIR)
+ Bool -- stub_h exists
+ Bool -- stub_c exists
+#ifdef GHCI
(Maybe ([UnlinkedBCO],ItblEnv)) -- interpreted code, if any
-
+#else
+ (Maybe ()) -- no interpreted code whatsoever
+#endif
-- no errors or warnings; the individual passes
-- (parse/rename/typecheck) print messages themselves
-> DynFlags
-> Module
-> ModuleLocation -- location info
- -> Bool -- source unchanged?
+ -> 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 maybe_old_iface hst hit pcs
- = do {
+hscMain ghci_mode dflags mod location source_unchanged have_object
+ maybe_old_iface hst hit pcs
+ = {-# SCC "hscMain" #-}
+ 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))
- <- checkOldIface ghci_mode dflags hit hst pcs
- (unJust "hscMain" (ml_hi_file location))
+ <- _scc_ "checkOldIface"
+ checkOldIface ghci_mode dflags hit hst pcs mod (ml_hi_file location)
source_unchanged maybe_old_iface;
if errs_found then
what_next | recomp_reqd || no_old_iface = hscRecomp
| otherwise = hscNoRecomp
;
- what_next ghci_mode dflags mod location maybe_checked_iface
- hst hit pcs_ch
+ what_next ghci_mode dflags have_object mod location
+ maybe_checked_iface hst hit pcs_ch
}}
-- we definitely expect to have the old interface available
-hscNoRecomp ghci_mode dflags mod location (Just old_iface) hst hit pcs_ch
+hscNoRecomp ghci_mode dflags have_object
+ mod location (Just old_iface) hst hit pcs_ch
| ghci_mode == OneShot
= do {
- hPutStrLn stderr "compilation IS NOT required";
+ when (verbosity dflags > 0) $
+ hPutStrLn stderr "compilation IS NOT required";
let { bomb = panic "hscNoRecomp:OneShot" };
return (HscNoRecomp pcs_ch bomb bomb)
}
| otherwise
= do {
when (verbosity dflags >= 1) $
- hPutStrLn stderr ("Skipping " ++ compMsg mod location);
+ hPutStrLn stderr ("Skipping " ++
+ showModMsg have_object mod location);
-- CLOSURE
(pcs_cl, closure_errs, cl_hs_decls)
-- TYPECHECK
maybe_tc_result
- <- typecheckIface dflags pcs_cl hst old_iface (vanillaSyntaxMap, cl_hs_decls);
+ <- typecheckIface dflags pcs_cl hst old_iface cl_hs_decls;
case maybe_tc_result of {
Nothing -> return (HscFail pcs_cl);
return (HscNoRecomp pcs_tc new_details old_iface)
}}}
-compMsg mod location =
- mod_str ++ take (12 - length mod_str) (repeat ' ')
- ++ " (" ++ unJust "hscRecomp" (ml_hs_file location) ++ ")"
- where mod_str = moduleUserString mod
-
-
-hscRecomp ghci_mode dflags mod location maybe_checked_iface hst hit pcs_ch
+hscRecomp ghci_mode dflags have_object
+ mod location maybe_checked_iface hst hit pcs_ch
= do {
- ; when (verbosity dflags >= 1) $
- hPutStrLn stderr ("Compiling " ++ compMsg mod location);
-
-- what target are we shooting for?
; let toInterp = dopt_HscLang dflags == HscInterpreted
+ ; let toNothing = dopt_HscLang dflags == HscNothing
+
+ ; when (ghci_mode /= OneShot && verbosity dflags >= 1) $
+ hPutStrLn stderr ("Compiling " ++
+ showModMsg (not toInterp) mod location);
-------------------
-- PARSE
-------------------
-- RENAME
-------------------
- ; (pcs_rn, print_unqualified, maybe_rn_result)
+ ; (pcs_rn, print_unqual, maybe_rn_result)
<- _scc_ "Rename"
- renameModule dflags hit hst pcs_ch this_mod rdr_module
+ renameModule dflags ghci_mode 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
+ Nothing -> return (HscFail pcs_ch);
+ Just (dont_discard, new_iface, rn_result) -> do {
-------------------
-- TYPECHECK
-------------------
; maybe_tc_result
- <- _scc_ "TypeCheck" typecheckModule dflags pcs_rn hst new_iface
- print_unqualified rn_hs_decls
+ <- _scc_ "TypeCheck"
+ typecheckModule dflags pcs_rn hst print_unqual rn_result
; case maybe_tc_result of {
- Nothing -> return (HscFail pcs_ch{-was: pcs_rn-});
+ Nothing -> return (HscFail pcs_ch);
Just (pcs_tc, tc_result) -> do {
- ; let env_tc = tc_env tc_result
- insts_tc = tc_insts tc_result
-
-------------------
-- DESUGAR
-------------------
- ; (ds_binds, ds_rules, foreign_stuff)
+ ; (ds_details, foreign_stuff)
<- _scc_ "DeSugar"
- deSugar dflags pcs_tc hst this_mod print_unqualified tc_result
+ deSugar dflags pcs_tc hst this_mod print_unqual tc_result
+
+ -------------------
+ -- FLATTENING
+ -------------------
+ ; flat_details
+ <- _scc_ "Flattening"
+ flatten dflags pcs_tc hst ds_details
+
+ ; pcs_middle
+ <- _scc_ "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
+
+ -- alive at this point:
+ -- pcs_middle
+ -- foreign_stuff
+ -- ds_details
+ -- new_iface
-------------------
-- SIMPLIFY
-------------------
- ; (simplified, orphan_rules)
+ ; simpl_details
<- _scc_ "Core2Core"
- core2core dflags pcs_tc hst dont_discard ds_binds ds_rules
+ core2core dflags pcs_middle hst dont_discard flat_details
-------------------
-- TIDY
-------------------
- ; (pcs_simpl, tidy_binds, new_details)
- <- tidyCorePgm dflags this_mod pcs_tc env_tc insts_tc
- simplified orphan_rules
+ ; 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
+
+ -- alive at this point:
+ -- tidy_details
+ -- new_iface
+
+ ; emitExternalCore dflags new_iface tidy_details
+
+ ; let final_details = tidy_details {md_binds = []}
+ ; final_details `seq` return ()
+
-------------------
- -- BUILD THE NEW ModDetails AND ModIface
+ -- PREPARE FOR CODE GENERATION
-------------------
- ; final_iface <- _scc_ "MkFinalIface"
- mkFinalIface ghci_mode dflags location
- maybe_checked_iface new_iface new_details
+ -- Do saturation and convert to A-normal form
+ ; prepd_details <- _scc_ "CorePrep"
+ corePrepPgm dflags tidy_details
-------------------
-- CONVERT TO STG and COMPLETE CODE GENERATION
-------------------
- -- Do saturation and convert to A-normal form
- ; saturated <- coreSatPgm dflags tidy_binds
+ ; let
+ ModDetails{md_binds=binds, md_types=env_tc} = prepd_details
- ; (maybe_stub_h_filename, maybe_stub_c_filename, maybe_bcos)
- <- restOfCodeGeneration dflags toInterp this_mod
- (map ideclName (hsModuleImports rdr_module))
- foreign_stuff env_tc saturated
- hit (pcs_PIT pcs_simpl)
+ local_tycons = typeEnvTyCons env_tc
+ local_classes = typeEnvClasses env_tc
- -- and the answer is ...
- ; return (HscRecomp pcs_simpl new_details final_iface
- maybe_stub_h_filename maybe_stub_c_filename
- maybe_bcos)
- }}}}}}}
+ 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
+ -- declarations into a string suitable for emission into generated
+ -- C code...
+ --
+ foreign_headers =
+ unlines
+ . map (\fname -> "#include \"" ++ _UNPK_ fname ++ "\"")
+ . reverse
+ $ headers
+
+ -- ...and add the string to the headers requested via command line
+ -- options
+ --
+ ; 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
+ 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)
-mkFinalIface ghci_mode dflags location maybe_old_iface new_iface new_details
- = case completeIface maybe_old_iface new_iface new_details of
- (new_iface, Nothing) -- no change in the interfacfe
- -> do when (dopt Opt_D_dump_hi_diffs dflags)
- (printDump (text "INTERFACE UNCHANGED"))
- dumpIfSet_dyn dflags Opt_D_dump_hi
- "UNCHANGED FINAL INTERFACE" (pprIface new_iface)
- return new_iface
- (new_iface, Just sdoc_diffs)
- -> do dumpIfSet_dyn dflags Opt_D_dump_hi_diffs "INTERFACE HAS CHANGED"
- sdoc_diffs
- dumpIfSet_dyn dflags Opt_D_dump_hi "NEW FINAL INTERFACE"
- (pprIface new_iface)
- -- Write the interface file
- when (ghci_mode /= Interactive)
- (writeIface (unJust "hscRecomp:hi" (ml_hi_file location))
- new_iface)
- return new_iface
+ ------------------ 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 )
+#else
+ then error "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)
+ -- and the answer is ...
+ ; return (HscRecomp pcs_final
+ final_details
+ final_iface
+ stub_h_exists stub_c_exists
+ maybe_bcos)
+ }}}}}}}
myParseModule dflags src_filename
= do -------------------------- Parser ----------------
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 (_PK_ 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;
}}
-restOfCodeGeneration dflags toInterp this_mod imported_module_names
- foreign_stuff env_tc tidy_binds
- hit pit -- these last two for mapping ModNames to Modules
- | toInterp
- = do (bcos,itbl_env)
- <- byteCodeGen dflags tidy_binds local_tycons local_classes
- return (Nothing, Nothing, Just (bcos,itbl_env))
-
- | otherwise
- = do
- -------------------------- Convert to STG -------------------------------
- (stg_binds, cost_centre_info)
- <- _scc_ "CoreToStg"
- myCoreToStg dflags this_mod tidy_binds env_tc
-
- -------------------------- Code generation ------------------------------
- abstractC <- _scc_ "CodeGen"
- codeGen dflags this_mod imported_modules
- cost_centre_info fe_binders
- local_tycons stg_binds
-
- -------------------------- Code output -------------------------------
- (maybe_stub_h_name, maybe_stub_c_name)
- <- codeOutput dflags this_mod local_tycons
- tidy_binds stg_binds
- c_code h_code abstractC
-
- return (maybe_stub_h_name, maybe_stub_c_name, Nothing)
- where
- local_tycons = typeEnvTyCons env_tc
- local_classes = typeEnvClasses env_tc
- imported_modules = map mod_name_to_Module imported_module_names
- (h_code,c_code,fe_binders) = foreign_stuff
-
- mod_name_to_Module :: ModuleName -> Module
- mod_name_to_Module nm
- = let str_mi = case lookupModuleEnvByName hit nm of
- Just mi -> mi
- Nothing -> case lookupModuleEnvByName pit nm of
- Just mi -> mi
- Nothing -> barf nm
- in mi_module str_mi
- barf nm = pprPanic "mod_name_to_Module: no hst or pst mapping for"
- (ppr nm)
-
-
-myCoreToStg dflags this_mod tidy_binds env_tc
+myCoreToStg dflags this_mod tidy_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
+ -- thoroughout code generation -- JRS
+ --
+ -- This is still necessary. -- SDM (10 Dec 2001)
- --let bcos = byteCodeGen dflags tidy_binds local_tycons local_classes
+ stg_binds <- _scc_ "Core2Stg"
+ coreToStg dflags tidy_binds
-
- stg_binds <- _scc_ "Core2Stg" coreToStg dflags this_mod tidy_binds
+ (stg_binds2, cost_centre_info) <- _scc_ "Core2Stg"
+ stg2stg dflags this_mod stg_binds
- (stg_binds2, cost_centre_info)
- <- _scc_ "Core2Stg" stg2stg dflags this_mod stg_binds
+ let env_rhs :: CgInfoEnv
+ env_rhs = mkNameEnv [ caf_info `seq` (idName bndr, CgInfo caf_info)
+ | (bind,_) <- stg_binds2,
+ let caf_info
+ | stgBindHasCafRefs bind = MayHaveCafRefs
+ | otherwise = NoCafRefs,
+ bndr <- stgBinders bind ]
- return (stg_binds2, cost_centre_info)
- where
- local_tycons = typeEnvTyCons env_tc
- local_classes = typeEnvClasses env_tc
+ return (stg_binds2, cost_centre_info, env_rhs)
\end{code}
\begin{code}
hscStmt dflags hst hit pcs0 icontext stmt just_expr
- = let
- InteractiveContext {
- ic_rn_env = rn_env,
- ic_type_env = type_env,
- ic_module = scope_mod } = icontext
- in
- do { maybe_stmt <- hscParseStmt dflags stmt
+ = do { maybe_stmt <- hscParseStmt dflags stmt
; case maybe_stmt of
Nothing -> return (pcs0, Nothing)
Just parsed_stmt -> do {
- let { notExprStmt (ExprStmt _ _) = False;
- notExprStmt _ = True
+ let { notExprStmt (ExprStmt _ _ _) = False;
+ notExprStmt _ = True
};
if (just_expr && notExprStmt parsed_stmt)
-- Rename it
(pcs1, print_unqual, maybe_renamed_stmt)
- <- renameStmt dflags hit hst pcs0 scope_mod
- iNTERACTIVE rn_env parsed_stmt
+ <- renameStmt dflags hit hst pcs0 icontext parsed_stmt
; case maybe_renamed_stmt of
Nothing -> return (pcs0, Nothing)
-- Typecheck it
maybe_tc_return <-
if just_expr
- then case rn_stmt of { (syn, ExprStmt e _, decls) ->
- typecheckExpr dflags pcs1 hst type_env
- print_unqual iNTERACTIVE (syn,e,decls) }
- else typecheckStmt dflags pcs1 hst type_env
+ 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
-- 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
- -- Saturate it
- ; sat_expr <- coreSatExpr dflags tidy_expr
+ -- Prepare for codegen
+ ; prepd_expr <- corePrepExpr dflags tidy_expr
-- Convert to BCOs
- ; bcos <- coreExprToBCOs dflags sat_expr
+ ; bcos <- coreExprToBCOs dflags prepd_expr
; let
-- Make all the bound ids "global" ids, now that
-- 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 = setIdGlobalDetails id VanillaGlobal
+ globaliseId id = setGlobalIdDetails id VanillaGlobal
; return (pcs2, Just (global_bound_ids, ty, bcos))
hscParseStmt dflags str
= do -------------------------- Parser ----------------
showPass dflags "Parser"
- _scc_ "Parser" do
+ _scc_ "Parser" 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 SLIT("<interactive>") 1
- case parseStmt buf PState{ bol = 0#, atbol = 1#,
- context = [], glasgow_exts = glaexts,
- loc = mkSrcLoc SLIT("<no file>") 0 } of {
+ case parseStmt buf (mkPState loc exts) of {
PFailed err -> do { hPutStrLn stderr (showSDoc err);
-- Not yet implemented in <4.11 freeStringBuffer buf;
%************************************************************************
%* *
+\subsection{Getting information about an identifer}
+%* *
+%************************************************************************
+
+\begin{code}
+#ifdef GHCI
+hscThing -- like hscStmt, but deals with a single identifier
+ :: DynFlags
+ -> HomeSymbolTable
+ -> HomeIfaceTable
+ -> PersistentCompilerState -- IN: persistent compiler state
+ -> InteractiveContext -- Context for compiling
+ -> String -- The identifier
+ -> IO ( PersistentCompilerState,
+ [TyThing] )
+
+hscThing dflags hst hit pcs0 ic str
+ = do maybe_rdr_name <- myParseIdentifier dflags 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 ic 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 do_lookup n
+ | isLocalName n = lookupNameEnv (ic_type_env ic) n
+ | otherwise = lookupType hst (pcs_PTE pcs) n
+
+ maybe_ty_things = map do_lookup names
+ in
+ return (pcs, catMaybes maybe_ty_things) }
+ }}}
+
+myParseIdentifier dflags str
+ = do buf <- stringToStringBuffer str
+
+ let exts = ExtFlags {glasgowExtsEF = dopt Opt_GlasgowExts dflags,
+ parrEF = dopt Opt_PArr dflags}
+ loc = mkSrcLoc SLIT("<interactive>") 1
+
+ case parseIdentifier buf (mkPState loc exts) 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) }
+#endif
+\end{code}
+
+%************************************************************************
+%* *
+\subsection{Find all the things defined in a module}
+%* *
+%************************************************************************
+
+\begin{code}
+#ifdef GHCI
+hscModuleContents
+ :: DynFlags
+ -> HomeSymbolTable
+ -> HomeIfaceTable
+ -> PersistentCompilerState -- IN: persistent compiler state
+ -> Module -- module to inspect
+ -> Bool -- grab just the exports, or the whole toplev
+ -> IO (PersistentCompilerState, Maybe [TyThing])
+
+hscModuleContents dflags hst hit pcs0 mod exports_only = do {
+
+ -- slurp the interface if necessary
+ (pcs1, print_unqual, maybe_rn_stuff)
+ <- slurpIface dflags hit hst pcs0 mod;
+
+ case maybe_rn_stuff of {
+ Nothing -> return (pcs0, Nothing);
+ Just (names, rn_decls) -> do {
+
+ -- Typecheck the declarations
+ maybe_pcs <-
+ typecheckExtraDecls dflags pcs1 hst print_unqual iNTERACTIVE rn_decls;
+
+ case maybe_pcs of {
+ Nothing -> return (pcs1, Nothing);
+ Just pcs2 ->
+
+ let { all_names
+ | exports_only = names
+ | otherwise =
+ let { iface = fromJust (lookupModuleEnv hit mod);
+ env = fromJust (mi_globals iface);
+ range = rdrEnvElts env;
+ } in
+ -- grab all the things from the global env that are locally def'd
+ nub [ n | elts <- range, GRE n LocalDef _ <- elts ];
+
+ pte = pcs_PTE pcs2;
+
+ ty_things = map (fromJust . lookupType hst pte) all_names;
+
+ } in
+
+ return (pcs2, Just ty_things)
+ }}}}
+#endif
+\end{code}
+
+%************************************************************************
+%* *
\subsection{Initial persistent state}
%* *
%************************************************************************
nsIPs = emptyFM },
prsDecls = (emptyNameEnv, 0),
prsInsts = (emptyBag, 0),
- prsRules = (emptyBag, 0),
+ prsRules = foldr add_rule (emptyBag, 0) builtinRules,
prsImpMods = emptyFM
}
)
+ 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 names = foldl add emptyFM names
add env name
= addToFM env (moduleName (nameModule name), nameOccName name) name
-
-
-initRules :: PackageRuleBase
-initRules = emptyRuleBase
-{- SHOULD BE (ish)
- foldl add emptyVarEnv builtinRules
- where
- add env (name,rule)
- = extendRuleBase env name rule
--}
\end{code}
projects / ghc-hetmet.git / blobdiff