\begin{code}
module HscMain ( HscResult(..), hscMain,
+#ifdef GHCI
+ hscExpr,
+#endif
initPersistentCompilerState ) where
#include "HsVersions.h"
-import Maybe ( isJust )
-import Monad ( when )
-import IO ( hPutStr, hPutStrLn, hClose, stderr,
- openFile, IOMode(..) )
+#ifdef GHCI
+import RdrHsSyn ( RdrNameHsExpr )
+import Rename ( renameExpr )
+import CoreToStg ( coreExprToStg )
+import StringBuffer ( stringToStringBuffer, freeStringBuffer )
+import Unique ( Uniquable(..) )
+import Type ( splitTyConApp_maybe )
+import PrelNames ( ioTyConKey )
+import ByteCodeGen ( byteCodeGen )
+#endif
+
import HsSyn
-import RdrHsSyn ( RdrNameHsModule )
-import FastString ( unpackFS )
import StringBuffer ( hGetStringBuffer )
-import Parser ( parse )
+import Parser
import Lex ( PState(..), ParseResult(..) )
import SrcLoc ( mkSrcLoc )
-
-import Rename ( renameModule, checkOldIface, closeIfaceDecls )
-
+import Rename ( checkOldIface, renameModule, closeIfaceDecls )
import Rules ( emptyRuleBase )
-import PrelInfo ( wiredInThings )
+import PrelInfo ( wiredInThingEnv, wiredInThings )
import PrelNames ( knownKeyNames )
-import PrelRules ( builtinRules )
import MkIface ( completeIface, mkModDetailsFromIface, mkModDetails,
- writeIface )
-import TcModule ( TcResults(..), typecheckModule )
-import TcEnv ( tcEnvTyCons, tcEnvClasses )
+ writeIface, pprIface )
+import TcModule
import InstEnv ( emptyInstEnv )
-import Desugar ( deSugar )
-import SimplCore ( core2core )
-import OccurAnal ( occurAnalyseBinds )
+import Desugar
+import SimplCore
import CoreUtils ( coreBindsSize )
import CoreTidy ( tidyCorePgm )
-import CoreToStg ( topCoreBindsToStg )
-import StgSyn ( collectFinalStgBinders )
+import CoreSat
+import CoreToStg ( coreToStg )
import SimplStg ( stg2stg )
import CodeGen ( codeGen )
import CodeOutput ( codeOutput )
-import Module ( ModuleName, moduleNameUserString,
- moduleUserString, moduleName, emptyModuleEnv,
- extendModuleEnv )
+import Module ( ModuleName, moduleName, mkHomeModule )
import CmdLineOpts
-import ErrUtils ( ghcExit, doIfSet, dumpIfSet_dyn )
+import ErrUtils ( dumpIfSet_dyn, showPass )
+import Util ( unJust )
import UniqSupply ( mkSplitUniqSupply )
import Bag ( emptyBag )
import Outputable
-import Char ( isSpace )
-import StgInterp ( stgToInterpSyn )
+import Interpreter
+import CmStaticInfo ( GhciMode(..) )
import HscStats ( ppSourceStats )
import HscTypes ( ModDetails, ModIface(..), PersistentCompilerState(..),
- PersistentRenamerState(..), WhatsImported(..),
- HomeSymbolTable, PackageSymbolTable, ImportVersion,
- GenAvailInfo(..), RdrAvailInfo, OrigNameEnv(..),
- PackageRuleBase, HomeIfaceTable, PackageIfaceTable,
- extendTypeEnv, groupTyThings, TypeEnv, TyThing,
- typeEnvClasses, typeEnvTyCons )
-import RnMonad ( ExportItem, ParsedIface(..) )
-import CmSummarise ( ModSummary(..), name_of_summary, ms_get_imports,
- mimp_name )
-import Finder ( Finder )
-import InterpSyn ( UnlinkedIBind )
-import StgInterp ( ItblEnv )
+ PersistentRenamerState(..), ModuleLocation(..),
+ HomeSymbolTable,
+ OrigNameEnv(..), PackageRuleBase, HomeIfaceTable,
+ typeEnvClasses, typeEnvTyCons, emptyIfaceTable )
import FiniteMap ( FiniteMap, plusFM, emptyFM, addToFM )
-import OccName ( OccName, pprOccName )
-import Name ( Name, nameModule, emptyNameEnv, nameOccName,
- getName, extendNameEnv_C, nameEnvElts )
-import VarEnv ( emptyVarEnv )
-import Module ( Module, mkModuleName, lookupModuleEnvByName )
+import OccName ( OccName )
+import Name ( Name, nameModule, nameOccName, getName )
+import Name ( emptyNameEnv )
+import Module ( Module, lookupModuleEnvByName )
+import Monad ( when )
+import Maybe ( isJust )
+import IO
\end{code}
\begin{code}
data HscResult
- = HscOK ModDetails -- new details (HomeSymbolTable additions)
- (Maybe ModIface) -- new iface (if any compilation was done)
- (Maybe String) -- generated stub_h filename (in /tmp)
- (Maybe String) -- generated stub_c filename (in /tmp)
- (Maybe ([UnlinkedIBind],ItblEnv)) -- interpreted code, if any
- PersistentCompilerState -- updated PCS
-
- | HscFail PersistentCompilerState -- updated PCS
+ -- compilation failed
+ = HscFail PersistentCompilerState -- updated PCS
+ -- concluded that it wasn't necessary
+ | HscNoRecomp PersistentCompilerState -- updated PCS
+ ModDetails -- new details (HomeSymbolTable additions)
+ ModIface -- new iface (if any compilation was done)
+ -- did recompilation
+ | HscRecomp PersistentCompilerState -- updated PCS
+ ModDetails -- new details (HomeSymbolTable additions)
+ ModIface -- new iface (if any compilation was done)
+ (Maybe String) -- generated stub_h filename (in /tmp)
+ (Maybe String) -- generated stub_c filename (in /tmp)
+ (Maybe ([UnlinkedIBind],ItblEnv)) -- interpreted code, if any
+
+
-- no errors or warnings; the individual passes
-- (parse/rename/typecheck) print messages themselves
hscMain
- :: DynFlags
- -> Finder
- -> ModSummary -- summary, including source filename
- -> Maybe ModIface -- old interface, if available
+ :: GhciMode
+ -> DynFlags
+ -> Bool -- source unchanged?
+ -> ModuleLocation -- location info
+ -> Maybe ModIface -- old interface, if available
-> HomeSymbolTable -- for home module ModDetails
-> HomeIfaceTable
- -> PackageIfaceTable
-> PersistentCompilerState -- IN: persistent compiler state
-> IO HscResult
-hscMain dflags finder summary maybe_old_iface hst hit pit pcs
+hscMain ghci_mode dflags source_unchanged location maybe_old_iface hst hit pcs
= do {
- -- ????? source_unchanged :: Bool -- extracted from summary?
- let source_unchanged = trace "WARNING: source_unchanged?!" False
- ;
- (pcs_ch, check_errs, (recomp_reqd, maybe_checked_iface))
- <- checkOldIface dflags finder hit hst pcs (ms_mod summary)
- source_unchanged maybe_old_iface;
- if check_errs then
+ 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))
+ source_unchanged maybe_old_iface;
+
+ if errs_found then
return (HscFail pcs_ch)
else do {
what_next | recomp_reqd || no_old_iface = hscRecomp
| otherwise = hscNoRecomp
;
- what_next dflags finder summary maybe_checked_iface
- hst hit pit pcs_ch
+ what_next ghci_mode dflags location maybe_checked_iface
+ hst hit pcs_ch
}}
-hscNoRecomp dflags finder summary maybe_checked_iface hst hit pit pcs_ch
+-- we definitely expect to have the old interface available
+hscNoRecomp ghci_mode dflags location (Just old_iface) hst hit pcs_ch
+ | ghci_mode == OneShot
= do {
- -- we definitely expect to have the old interface available
- let old_iface = case maybe_checked_iface of
- Just old_if -> old_if
- Nothing -> panic "hscNoRecomp:old_iface"
- ;
+ hPutStrLn stderr "compilation IS NOT required";
+ let { bomb = panic "hscNoRecomp:OneShot" };
+ return (HscNoRecomp pcs_ch bomb bomb)
+ }
+ | otherwise
+ = do {
+ hPutStr stderr "compilation IS NOT required";
+ when (verbosity dflags /= 1) $ hPutStrLn stderr "";
+
-- CLOSURE
(pcs_cl, closure_errs, cl_hs_decls)
- <- closeIfaceDecls dflags finder hit hst pcs_ch old_iface ;
+ <- closeIfaceDecls dflags hit hst pcs_ch old_iface ;
if closure_errs then
return (HscFail pcs_cl)
else do {
-- TYPECHECK
- maybe_tc_result
- <- typecheckModule dflags (ms_mod summary) pcs_cl hst hit cl_hs_decls;
+ maybe_tc_result <- typecheckModule dflags pcs_cl hst
+ old_iface alwaysQualify cl_hs_decls;
case maybe_tc_result of {
Nothing -> return (HscFail pcs_cl);
- Just tc_result -> do {
+ Just (pcs_tc, tc_result) -> do {
- let pcs_tc = tc_pcs tc_result
- env_tc = tc_env tc_result
- binds_tc = tc_binds tc_result
- local_insts = tc_insts tc_result
- local_rules = tc_rules tc_result
+ let env_tc = tc_env tc_result
+ local_rules = tc_rules tc_result
;
-- create a new details from the closed, typechecked, old iface
- let new_details = mkModDetailsFromIface env_tc local_insts local_rules
+ let new_details = mkModDetailsFromIface env_tc local_rules
;
- return (HscOK new_details
- Nothing -- tells CM to use old iface and linkables
- Nothing Nothing -- foreign export stuff
- Nothing -- ibinds
- pcs_tc)
+ return (HscNoRecomp pcs_tc new_details old_iface)
}}}}
-hscRecomp dflags finder summary maybe_checked_iface hst hit pit pcs_ch
- = do {
- -- what target are we shooting for?
- let toInterp = dopt_HscLang dflags == HscInterpreted
- this_mod = ms_mod summary
- ;
- -- PARSE
- maybe_parsed <- myParseModule dflags summary;
- case maybe_parsed of {
- Nothing -> return (HscFail pcs_ch);
- Just rdr_module -> do {
-
- -- RENAME
- show_pass dflags "Renamer";
- (pcs_rn, maybe_rn_result)
- <- renameModule dflags finder hit hst pcs_ch this_mod rdr_module;
- case maybe_rn_result of {
- Nothing -> return (HscFail pcs_rn);
- Just (new_iface, rn_hs_decls) -> do {
-
- -- TYPECHECK
- show_pass dflags "Typechecker";
- maybe_tc_result
- <- typecheckModule dflags this_mod pcs_rn hst hit rn_hs_decls;
- case maybe_tc_result of {
- Nothing -> return (HscFail pcs_rn);
- Just tc_result -> do {
-
- let pcs_tc = tc_pcs tc_result
- env_tc = tc_env tc_result
- binds_tc = tc_binds tc_result
- local_insts = tc_insts tc_result
- ;
- -- DESUGAR, SIMPLIFY, TIDY-CORE
- -- We grab the the unfoldings at this point.
- (tidy_binds, orphan_rules, foreign_stuff)
- <- dsThenSimplThenTidy dflags (pcs_rules pcs_tc) this_mod tc_result hst
- ;
- -- CONVERT TO STG
- (stg_binds, oa_tidy_binds, cost_centre_info, top_level_ids)
- <- myCoreToStg dflags this_mod tidy_binds
- ;
- -- cook up a new ModDetails now we (finally) have all the bits
- let new_details = mkModDetails env_tc local_insts tidy_binds
- top_level_ids orphan_rules
- ;
- -- and possibly create a new ModIface
- let maybe_final_iface_and_sdoc
- = completeIface maybe_checked_iface new_iface new_details
- maybe_final_iface
- = case maybe_final_iface_and_sdoc of
- Just (fif, sdoc) -> Just fif; Nothing -> Nothing
- ;
- -- SimonM does this, higher up
- -- -- Write the interface file
- -- writeIface finder maybe_final_iface
- -- ;
- -- do the rest of code generation/emission
- (maybe_stub_h_filename, maybe_stub_c_filename, maybe_ibinds)
- <- restOfCodeGeneration dflags toInterp summary
- cost_centre_info foreign_stuff env_tc stg_binds oa_tidy_binds
- hit (pcs_PIT pcs_tc)
- ;
- -- and the answer is ...
- return (HscOK new_details maybe_final_iface
- maybe_stub_h_filename maybe_stub_c_filename
- maybe_ibinds pcs_tc)
- }}}}}}}
-
-
-myParseModule dflags summary
+hscRecomp ghci_mode dflags location maybe_checked_iface hst hit pcs_ch
+ = do {
+ ; when (verbosity dflags >= 1) $
+ hPutStr stderr "compilation IS required";
+ -- mode -v1 tries to keep everything on one line
+ when (verbosity dflags > 1) $
+ hPutStrLn stderr "";
+
+ -- what target are we shooting for?
+ ; let toInterp = dopt_HscLang dflags == HscInterpreted
+
+ -------------------
+ -- 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, maybe_rn_result)
+ <- renameModule dflags hit hst pcs_ch this_mod rdr_module
+ ; case maybe_rn_result of {
+ Nothing -> return (HscFail pcs_rn);
+ Just (print_unqualified, (is_exported, new_iface, rn_hs_decls)) -> do {
+
+ -------------------
+ -- TYPECHECK
+ -------------------
+ ; maybe_tc_result <- typecheckModule dflags pcs_rn hst new_iface
+ print_unqualified rn_hs_decls
+ ; case maybe_tc_result of {
+ Nothing -> return (HscFail pcs_rn);
+ Just (pcs_tc, tc_result) -> do {
+
+ ; let env_tc = tc_env tc_result
+
+ -------------------
+ -- DESUGAR
+ -------------------
+ ; (ds_binds, ds_rules, foreign_stuff)
+ <- deSugar dflags pcs_tc hst this_mod print_unqualified tc_result
+
+ -------------------
+ -- SIMPLIFY, TIDY-CORE
+ -------------------
+ -- We grab the the unfoldings at this point.
+ ; (pcs_simpl, tidy_binds, orphan_rules)
+ <- simplThenTidy dflags pcs_tc hst this_mod is_exported ds_binds ds_rules
+
+ -------------------
+ -- BUILD THE NEW ModDetails AND ModIface
+ -------------------
+ ; let new_details = mkModDetails env_tc tidy_binds orphan_rules
+ ; final_iface <- mkFinalIface ghci_mode dflags location
+ maybe_checked_iface new_iface new_details
+
+ -------------------
+ -- CONVERT TO STG
+ -------------------
+ ; (stg_binds, cost_centre_info)
+ <- myCoreToStg dflags this_mod tidy_binds
+
+ -------------------
+ -- COMPLETE CODE GENERATION
+ -------------------
+ ; (maybe_stub_h_filename, maybe_stub_c_filename, maybe_ibinds)
+ <- restOfCodeGeneration dflags toInterp this_mod
+ (map ideclName (hsModuleImports rdr_module))
+ cost_centre_info foreign_stuff env_tc stg_binds tidy_binds
+ hit (pcs_PIT pcs_simpl)
+
+ -- and the answer is ...
+ ; return (HscRecomp pcs_simpl new_details final_iface
+ maybe_stub_h_filename maybe_stub_c_filename
+ maybe_ibinds)
+ }}}}}}}
+
+
+
+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
+
+
+myParseModule dflags src_filename
= do -------------------------- Parser ----------------
- show_pass dflags "Parser"
+ showPass dflags "Parser"
-- _scc_ "Parser"
- let src_filename -- name of the preprocessed source file
- = case ms_ppsource summary of
- Just (filename, fingerprint) -> filename
- Nothing -> pprPanic
- "myParseModule:summary is not of a source module"
- (ppr summary)
-
buf <- hGetStringBuffer True{-expand tabs-} src_filename
let glaexts | dopt Opt_GlasgowExts dflags = 1#
- | otherwise = 0#
+ | otherwise = 0#
case parse buf PState{ bol = 0#, atbol = 1#,
context = [], glasgow_exts = glaexts,
PFailed err -> do { hPutStrLn stderr (showSDoc err);
return Nothing };
- POk _ rdr_module@(HsModule mod_name _ _ _ _ _ _) -> do {
+
+ POk _ (PModule rdr_module@(HsModule mod_name _ _ _ _ _ _)) -> do {
dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_module) ;
}}
-restOfCodeGeneration dflags toInterp summary cost_centre_info
- foreign_stuff env_tc stg_binds oa_tidy_binds
+simplThenTidy dflags pcs hst this_mod is_exported binds rules
+ = do -- Do main Core-language transformations ---------
+ -- _scc_ "Core2Core"
+ (simplified, orphan_rules)
+ <- core2core dflags pcs hst is_exported binds rules
+
+ -- Do saturation and convert to A-normal form
+ -- NOTE: future passes cannot transform the syntax, only annotate it
+ saturated <- coreSatPgm dflags simplified
+
+ -- Do the final tidy-up
+ (pcs', tidy_binds, tidy_orphan_rules)
+ <- tidyCorePgm dflags this_mod pcs saturated orphan_rules
+
+ return (pcs', tidy_binds, tidy_orphan_rules)
+
+
+restOfCodeGeneration dflags toInterp this_mod imported_module_names cost_centre_info
+ foreign_stuff env_tc stg_binds tidy_binds
hit pit -- these last two for mapping ModNames to Modules
| toInterp
= do (ibinds,itbl_env)
- <- stgToInterpSyn (map fst stg_binds) local_tycons local_classes
+ <- stgBindsToInterpSyn dflags (map fst stg_binds)
+ local_tycons local_classes
return (Nothing, Nothing, Just (ibinds,itbl_env))
+
| otherwise
= do -------------------------- Code generation -------------------------------
- show_pass dflags "CodeGen"
-- _scc_ "CodeGen"
abstractC <- codeGen dflags this_mod imported_modules
cost_centre_info fe_binders
- local_tycons local_classes stg_binds
+ local_tycons stg_binds
-------------------------- Code output -------------------------------
- show_pass dflags "CodeOutput"
-- _scc_ "CodeOutput"
- ncg_uniqs <- mkSplitUniqSupply 'n'
(maybe_stub_h_name, maybe_stub_c_name)
- <- codeOutput dflags this_mod local_tycons local_classes
- oa_tidy_binds stg_binds
- c_code h_code abstractC ncg_uniqs
+ <- 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
- this_mod = ms_mod summary
- imported_modules = map (mod_name_to_Module.mimp_name)
- (ms_get_imports summary)
- (fe_binders,h_code,c_code) = foreign_stuff
+ 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
(ppr nm)
-dsThenSimplThenTidy dflags rule_base this_mod tc_result hst
- = do -------------------------- Desugaring ----------------
- -- _scc_ "DeSugar"
- show_pass dflags "DeSugar"
- ds_uniqs <- mkSplitUniqSupply 'd'
- (desugared, rules, h_code, c_code, fe_binders)
- <- deSugar dflags this_mod ds_uniqs hst tc_result
-
- -------------------------- Main Core-language transformations ----------------
- -- _scc_ "Core2Core"
- show_pass dflags "Core2Core"
- (simplified, orphan_rules)
- <- core2core dflags rule_base hst desugared rules
-
- -- Do the final tidy-up
- show_pass dflags "CoreTidy"
- (tidy_binds, tidy_orphan_rules)
- <- tidyCorePgm dflags this_mod simplified orphan_rules
-
- return (tidy_binds, tidy_orphan_rules, (fe_binders,h_code,c_code))
-
-
myCoreToStg dflags this_mod tidy_binds
= do
- c2s_uniqs <- mkSplitUniqSupply 'c'
- st_uniqs <- mkSplitUniqSupply 'g'
- let occ_anal_tidy_binds = occurAnalyseBinds tidy_binds
-
- () <- coreBindsSize occ_anal_tidy_binds `seq` return ()
+ () <- 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
- show_pass dflags "Core2Stg"
+ --let bcos = byteCodeGen tidy_binds
+ --putStrLn (showSDoc (vcat (map ppr bcos)))
+
-- _scc_ "Core2Stg"
- let stg_binds = topCoreBindsToStg c2s_uniqs occ_anal_tidy_binds
+ stg_binds <- coreToStg dflags this_mod tidy_binds
- show_pass dflags "Stg2Stg"
-- _scc_ "Stg2Stg"
- (stg_binds2, cost_centre_info) <- stg2stg dflags this_mod st_uniqs stg_binds
- let final_ids = collectFinalStgBinders (map fst stg_binds2)
+ (stg_binds2, cost_centre_info) <- stg2stg dflags this_mod stg_binds
- return (stg_binds2, occ_anal_tidy_binds, cost_centre_info, final_ids)
+ return (stg_binds2, cost_centre_info)
+\end{code}
-show_pass dflags what
- = if dopt Opt_D_show_passes dflags
- then hPutStr stderr ("*** "++what++":\n")
- else return ()
-\end{code}
+%************************************************************************
+%* *
+\subsection{Compiling an expression}
+%* *
+%************************************************************************
+\begin{code}
+#ifdef GHCI
+hscExpr
+ :: DynFlags
+ -> HomeSymbolTable
+ -> HomeIfaceTable
+ -> PersistentCompilerState -- IN: persistent compiler state
+ -> Module -- Context for compiling
+ -> String -- The expression
+ -> IO ( PersistentCompilerState,
+ Maybe (UnlinkedIExpr, PrintUnqualified, Type) )
+
+hscExpr dflags hst hit pcs0 this_module expr
+ = do {
+ maybe_parsed <- hscParseExpr dflags expr;
+ case maybe_parsed of
+ Nothing -> return (pcs0, Nothing)
+ Just parsed_expr -> do {
+
+ -- Rename it
+ (pcs1, maybe_renamed_expr) <-
+ renameExpr dflags hit hst pcs0 this_module parsed_expr;
+ case maybe_renamed_expr of
+ Nothing -> return (pcs1, Nothing)
+ Just (print_unqual, rn_expr) -> do {
+
+ -- Typecheck it
+ maybe_tc_return
+ <- typecheckExpr dflags pcs1 hst print_unqual this_module rn_expr;
+ case maybe_tc_return of {
+ Nothing -> return (pcs1, Nothing);
+ Just (pcs2, tc_expr, ty) -> do
+
+ -- if it isn't an IO-typed expression,
+ -- wrap "print" around it & recompile...
+ let { is_IO_type = case splitTyConApp_maybe ty of {
+ Just (tycon, _) -> getUnique tycon == ioTyConKey;
+ Nothing -> False }
+ };
+
+ if (not is_IO_type)
+ then do (new_pcs, maybe_stuff)
+ <- hscExpr dflags hst hit pcs2 this_module
+ ("print (" ++ expr ++ ")")
+ case maybe_stuff of
+ Nothing -> return (new_pcs, maybe_stuff)
+ Just (expr, _, _) ->
+ return (new_pcs, Just (expr, print_unqual, ty))
+ else do
+
+ -- Desugar it
+ ds_expr <- deSugarExpr dflags pcs2 hst this_module
+ print_unqual tc_expr;
+
+ -- Simplify it
+ simpl_expr <- simplifyExpr dflags pcs2 hst ds_expr;
+
+ -- Saturate it
+ sat_expr <- coreSatExpr dflags simpl_expr;
+
+ -- Convert to STG
+ let stg_expr = coreExprToStg sat_expr;
+
+ -- ToDo: need to do SRTs?
+
+ -- Convert to InterpSyn
+ unlinked_iexpr <- stgExprToInterpSyn dflags stg_expr;
+
+ return (pcs2, Just (unlinked_iexpr, print_unqual, ty));
+ }}}}
+
+hscParseExpr :: DynFlags -> String -> IO (Maybe RdrNameHsExpr)
+hscParseExpr dflags str
+ = do -------------------------- Parser ----------------
+ showPass dflags "Parser"
+ -- _scc_ "Parser"
+
+ buf <- stringToStringBuffer ("__expr " ++ str)
+
+ -- glaexts is True for now (because of the daft __expr at the front
+ -- of the string...)
+ let glaexts = 1#
+ --let glaexts | dopt Opt_GlasgowExts dflags = 1#
+ -- | otherwise = 0#
+
+ case parse buf PState{ bol = 0#, atbol = 1#,
+ context = [], glasgow_exts = glaexts,
+ loc = mkSrcLoc SLIT("<no file>") 0 } of {
+
+ PFailed err -> do { freeStringBuffer buf;
+ hPutStrLn stderr (showSDoc err);
+ return Nothing };
+
+ POk _ (PExpr rdr_expr) -> do {
+
+ --ToDo: can't free the string buffer until we've finished this
+ -- compilation sweep and all the identifiers have gone away.
+ --freeStringBuffer buf;
+ dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_expr);
+ return (Just rdr_expr)
+ }}
+#endif
+\end{code}
%************************************************************************
%* *
initPersistentCompilerState
= do prs <- initPersistentRenamerState
return (
- PCS { pcs_PST = initPackageDetails,
+ PCS { pcs_PIT = emptyIfaceTable,
+ pcs_PTE = wiredInThingEnv,
pcs_insts = emptyInstEnv,
pcs_rules = emptyRuleBase,
pcs_PRS = prs
}
)
-initPackageDetails :: PackageSymbolTable
-initPackageDetails = extendTypeEnv emptyModuleEnv (groupTyThings wiredInThings)
-
---initPackageDetails = panic "initPackageDetails"
-
initPersistentRenamerState :: IO PersistentRenamerState
= do ns <- mkSplitUniqSupply 'r'
return (
- PRS { prsOrig = Orig { origNames = initOrigNames,
+ PRS { prsOrig = Orig { origNS = ns,
+ origNames = initOrigNames,
origIParam = emptyFM },
- prsDecls = emptyNameEnv,
- prsInsts = emptyBag,
- prsRules = emptyBag,
- prsNS = ns
+ prsDecls = (emptyNameEnv, 0),
+ prsInsts = (emptyBag, 0),
+ prsRules = (emptyBag, 0)
}
)
projects / ghc-hetmet.git / blobdiff