\begin{code}
module HscMain ( HscResult(..), hscMain,
+#ifdef GHCI
+ hscStmt,
+#endif
initPersistentCompilerState ) where
#include "HsVersions.h"
-import Maybe ( isJust )
-import IO ( hPutStrLn, stderr )
+#ifdef GHCI
+import RdrHsSyn ( RdrNameStmt )
+import Rename ( renameStmt )
+import ByteCodeGen ( byteCodeGen )
+#endif
+
import HsSyn
-import StringBuffer ( hGetStringBuffer )
-import Parser ( parse )
+import StringBuffer ( hGetStringBuffer,
+ stringToStringBuffer, freeStringBuffer )
+import Parser
import Lex ( PState(..), ParseResult(..) )
import SrcLoc ( mkSrcLoc )
-
-import Rename ( renameModule, checkOldIface, closeIfaceDecls )
+import Rename ( checkOldIface, renameModule, closeIfaceDecls )
import Rules ( emptyRuleBase )
import PrelInfo ( wiredInThingEnv, wiredInThings )
-import PrelNames ( knownKeyNames )
+import PrelNames ( vanillaSyntaxMap, knownKeyNames )
import MkIface ( completeIface, mkModDetailsFromIface, mkModDetails,
writeIface, pprIface )
-import TcModule ( TcResults(..), typecheckModule )
+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, moduleName, mkModuleInThisPackage )
+import Id ( Id, idName, idFlavour, modifyIdInfo )
+import IdInfo ( setFlavourInfo, makeConstantFlavour )
+import Module ( ModuleName, moduleName, mkHomeModule,
+ moduleUserString )
import CmdLineOpts
import ErrUtils ( dumpIfSet_dyn, showPass )
import Util ( unJust )
import Bag ( emptyBag )
import Outputable
-import Interpreter ( UnlinkedIBind, ItblEnv, stgToInterpSyn )
+import Interpreter
+import CmStaticInfo ( GhciMode(..) )
import HscStats ( ppSourceStats )
import HscTypes ( ModDetails, ModIface(..), PersistentCompilerState(..),
PersistentRenamerState(..), ModuleLocation(..),
- HomeSymbolTable,
- OrigNameEnv(..), PackageRuleBase, HomeIfaceTable,
- typeEnvClasses, typeEnvTyCons, emptyIfaceTable )
+ HomeSymbolTable, InteractiveContext(..), TyThing(..),
+ NameSupply(..), PackageRuleBase, HomeIfaceTable,
+ typeEnvClasses, typeEnvTyCons, emptyIfaceTable,
+ extendLocalRdrEnv
+ )
import FiniteMap ( FiniteMap, plusFM, emptyFM, addToFM )
import OccName ( OccName )
-import Name ( Name, nameModule, nameOccName, getName )
-import Name ( emptyNameEnv )
+import Name ( Name, nameModule, nameOccName, getName, isGlobalName,
+ emptyNameEnv, extendNameEnvList
+ )
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 ([UnlinkedBCO],ItblEnv)) -- interpreted code, if any
+
+
-- no errors or warnings; the individual passes
-- (parse/rename/typecheck) print messages themselves
hscMain
- :: DynFlags
- -> Bool -- source unchanged?
+ :: GhciMode
+ -> DynFlags
+ -> Module
-> ModuleLocation -- location info
+ -> Bool -- source unchanged?
-> Maybe ModIface -- old interface, if available
-> HomeSymbolTable -- for home module ModDetails
-> HomeIfaceTable
-> PersistentCompilerState -- IN: persistent compiler state
-> IO HscResult
-hscMain dflags source_unchanged location maybe_old_iface hst hit pcs
+hscMain ghci_mode dflags mod location source_unchanged maybe_old_iface hst hit pcs
= do {
- putStrLn ("CHECKING OLD IFACE for hs = " ++ show (ml_hs_file location)
- ++ ", hspp = " ++ show (ml_hspp_file location));
+ 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 dflags hit hst pcs (unJust (ml_hi_file location) "hscMain")
- source_unchanged maybe_old_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)
what_next | recomp_reqd || no_old_iface = hscRecomp
| otherwise = hscNoRecomp
;
- what_next dflags location maybe_checked_iface
+ what_next ghci_mode dflags mod location maybe_checked_iface
hst hit pcs_ch
}}
-hscNoRecomp dflags 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
+ | ghci_mode == OneShot
= do {
- hPutStrLn stderr "COMPILATION NOT REQUIRED";
- -- 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"
- this_mod = mi_module old_iface
- ;
+ 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);
+
-- CLOSURE
(pcs_cl, closure_errs, cl_hs_decls)
<- closeIfaceDecls dflags hit hst pcs_ch old_iface ;
else do {
-- TYPECHECK
- maybe_tc_result <- typecheckModule dflags this_mod pcs_cl hst
- old_iface alwaysQualify cl_hs_decls;
+ maybe_tc_result
+ <- typecheckIface dflags pcs_cl hst old_iface (vanillaSyntaxMap, cl_hs_decls);
+
case maybe_tc_result of {
Nothing -> return (HscFail pcs_cl);
- Just tc_result -> do {
+ Just (pcs_tc, env_tc, local_rules) -> do {
- let pcs_tc = tc_pcs tc_result
- env_tc = tc_env tc_result
- local_insts = tc_insts 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)
}}}}
+compMsg mod location =
+ mod_str ++ take (12 - length mod_str) (repeat ' ')
+ ++ " (" ++ unJust "hscRecomp" (ml_hs_file location) ++ ")"
+ where mod_str = moduleUserString mod
-hscRecomp dflags location maybe_checked_iface hst hit pcs_ch
+
+hscRecomp ghci_mode dflags mod location maybe_checked_iface hst hit pcs_ch
= do {
- ; hPutStrLn stderr "COMPILATION IS REQUIRED";
+ ; when (verbosity dflags >= 1) $
+ hPutStrLn stderr ("Compiling " ++ compMsg mod location);
-- what target are we shooting for?
; let toInterp = dopt_HscLang dflags == HscInterpreted
-------------------
-- PARSE
-------------------
- ; maybe_parsed <- myParseModule dflags (unJust (ml_hspp_file location) "hscRecomp:hspp")
+ ; 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 = mkModuleInThisPackage (hsModuleName rdr_module)
+ ; let this_mod = mkHomeModule (hsModuleName rdr_module)
-------------------
-- RENAME
-------------------
- ; (pcs_rn, maybe_rn_result)
- <- renameModule dflags hit hst pcs_ch this_mod rdr_module
+ ; (pcs_rn, print_unqualified, maybe_rn_result)
+ <- _scc_ "Rename"
+ 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 {
+ 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
+
-------------------
-- TYPECHECK
-------------------
- ; maybe_tc_result <- typecheckModule dflags this_mod pcs_rn hst new_iface
- print_unqualified rn_hs_decls
+ ; maybe_tc_result
+ <- _scc_ "TypeCheck" typecheckModule dflags pcs_rn hst new_iface
+ print_unqualified rn_hs_decls
; case maybe_tc_result of {
- Nothing -> do { hPutStrLn stderr "Typecheck failed"
- ; return (HscFail pcs_rn) } ;
- Just tc_result -> do {
+ Nothing -> return (HscFail pcs_ch{-was: pcs_rn-});
+ Just (pcs_tc, tc_result) -> do {
- ; let pcs_tc = tc_pcs tc_result
- env_tc = tc_env tc_result
- local_insts = tc_insts tc_result
+ ; let env_tc = tc_env tc_result
-------------------
- -- DESUGAR, SIMPLIFY, TIDY-CORE
+ -- DESUGAR
-------------------
- -- We grab the the unfoldings at this point.
- ; simpl_result <- dsThenSimplThenTidy dflags (pcs_rules pcs_tc) this_mod
- print_unqualified is_exported tc_result hst
- ; let (tidy_binds, orphan_rules, foreign_stuff) = simpl_result
-
+ ; (ds_binds, ds_rules, foreign_stuff)
+ <- _scc_ "DeSugar"
+ deSugar dflags pcs_tc hst this_mod print_unqualified tc_result
+
-------------------
- -- CONVERT TO STG
+ -- SIMPLIFY, TIDY-CORE
-------------------
- ; (stg_binds, oa_tidy_binds, cost_centre_info, top_level_ids)
- <- myCoreToStg dflags this_mod tidy_binds
-
-
+ -- We grab the the unfoldings at this point.
+ ; (pcs_simpl, tidy_binds, orphan_rules)
+ <- simplThenTidy dflags pcs_tc hst this_mod dont_discard ds_binds ds_rules
+
-------------------
-- BUILD THE NEW ModDetails AND ModIface
-------------------
- ; let new_details = mkModDetails env_tc local_insts tidy_binds
- top_level_ids orphan_rules
- ; final_iface <- mkFinalIface dflags location maybe_checked_iface
- new_iface new_details
+ ; let new_details = mkModDetails env_tc tidy_binds orphan_rules
+ ; final_iface <- _scc_ "MkFinalIface"
+ mkFinalIface ghci_mode dflags location
+ maybe_checked_iface new_iface new_details
-------------------
- -- COMPLETE CODE GENERATION
+ -- CONVERT TO STG and COMPLETE CODE GENERATION
-------------------
- ; (maybe_stub_h_filename, maybe_stub_c_filename, maybe_ibinds)
+ -- Do saturation and convert to A-normal form
+ ; saturated <- coreSatPgm dflags tidy_binds
+
+ ; (maybe_stub_h_filename, maybe_stub_c_filename, maybe_bcos)
<- restOfCodeGeneration dflags toInterp this_mod
(map ideclName (hsModuleImports rdr_module))
- cost_centre_info foreign_stuff env_tc stg_binds oa_tidy_binds
- hit (pcs_PIT pcs_tc)
+ foreign_stuff env_tc saturated
+ hit (pcs_PIT pcs_simpl)
-- and the answer is ...
- ; return (HscOK new_details (Just final_iface)
- maybe_stub_h_filename maybe_stub_c_filename
- maybe_ibinds pcs_tc)
+ ; return (HscRecomp pcs_simpl new_details final_iface
+ maybe_stub_h_filename maybe_stub_c_filename
+ maybe_bcos)
}}}}}}}
-mkFinalIface dflags location maybe_old_iface new_iface new_details
+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)
"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)
+ -> 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
- writeIface (unJust (ml_hi_file location) "hscRecomp:hi") new_iface
+ when (ghci_mode /= Interactive)
+ (writeIface (unJust "hscRecomp:hi" (ml_hi_file location))
+ new_iface)
return new_iface
myParseModule dflags src_filename
= do -------------------------- Parser ----------------
showPass dflags "Parser"
- -- _scc_ "Parser"
+ _scc_ "Parser" do
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,
- loc = mkSrcLoc (_PK_ src_filename) 1 } of {
+ case parseModule buf PState{ bol = 0#, atbol = 1#,
+ context = [], glasgow_exts = glaexts,
+ loc = mkSrcLoc (_PK_ src_filename) 1 } of {
PFailed err -> do { hPutStrLn stderr (showSDoc err);
+ freeStringBuffer buf;
return Nothing };
+
POk _ rdr_module@(HsModule mod_name _ _ _ _ _ _) -> do {
dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_module) ;
(ppSourceStats False rdr_module) ;
return (Just rdr_module)
+ -- ToDo: free the string buffer later.
}}
-restOfCodeGeneration dflags toInterp this_mod imported_module_names cost_centre_info
- foreign_stuff env_tc stg_binds oa_tidy_binds
+simplThenTidy dflags pcs hst this_mod dont_discard binds rules
+ = do -- Do main Core-language transformations ---------
+ -- _scc_ "Core2Core"
+ (simplified, orphan_rules)
+ <- core2core dflags pcs hst dont_discard binds rules
+
+ -- Do the final tidy-up
+ (pcs', tidy_binds, tidy_orphan_rules)
+ <- tidyCorePgm dflags this_mod pcs simplified orphan_rules
+
+ return (pcs', tidy_binds, tidy_orphan_rules)
+
+
+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 (ibinds,itbl_env)
- <- stgToInterpSyn (map fst stg_binds) local_tycons local_classes
- return (Nothing, Nothing, Just (ibinds,itbl_env))
+ = do (bcos,itbl_env)
+ <- byteCodeGen dflags tidy_binds local_tycons local_classes
+ return (Nothing, Nothing, Just (bcos,itbl_env))
| otherwise
- = do -------------------------- Code generation -------------------------------
- -- _scc_ "CodeGen"
- abstractC <- codeGen dflags this_mod imported_modules
+ = 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 -------------------------------
- -- _scc_ "CodeOutput"
(maybe_stub_h_name, maybe_stub_c_name)
<- codeOutput dflags this_mod local_tycons
- oa_tidy_binds stg_binds
+ tidy_binds stg_binds
c_code h_code abstractC
return (maybe_stub_h_name, maybe_stub_c_name, Nothing)
local_tycons = typeEnvTyCons env_tc
local_classes = typeEnvClasses env_tc
imported_modules = map mod_name_to_Module imported_module_names
- (fe_binders,h_code,c_code) = foreign_stuff
+ (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 print_unqual is_exported tc_result hst
- = do -------------------------- Desugaring ----------------
- -- _scc_ "DeSugar"
- (desugared, rules, h_code, c_code, fe_binders)
- <- deSugar dflags this_mod print_unqual hst tc_result
-
- -------------------------- Main Core-language transformations ----------------
- -- _scc_ "Core2Core"
- (simplified, orphan_rules)
- <- core2core dflags rule_base hst is_exported desugared rules
-
- -- Do the final tidy-up
- (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
+myCoreToStg dflags this_mod tidy_binds env_tc
= 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
- showPass dflags "Core2Stg"
- -- _scc_ "Core2Stg"
- let stg_binds = topCoreBindsToStg c2s_uniqs occ_anal_tidy_binds
+ --let bcos = byteCodeGen dflags tidy_binds local_tycons local_classes
+
+
+ stg_binds <- _scc_ "Core2Stg" coreToStg dflags this_mod tidy_binds
- showPass 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)
+ <- _scc_ "Core2Stg" stg2stg dflags this_mod stg_binds
- return (stg_binds2, occ_anal_tidy_binds, cost_centre_info, final_ids)
+ return (stg_binds2, cost_centre_info)
+ where
+ local_tycons = typeEnvTyCons env_tc
+ local_classes = typeEnvClasses env_tc
\end{code}
%************************************************************************
%* *
-\subsection{Compiling an expression}
+\subsection{Compiling a do-statement}
%* *
%************************************************************************
-hscExpr
+\begin{code}
+#ifdef GHCI
+hscStmt
:: DynFlags
-> HomeSymbolTable
-> HomeIfaceTable
-> PersistentCompilerState -- IN: persistent compiler state
- -> Module -- Context for compiling
- -> String -- The expression
- -> IO HscResult
+ -> InteractiveContext -- Context for compiling
+ -> String -- The statement
+ -> IO ( PersistentCompilerState,
+ Maybe (InteractiveContext,
+ [Id],
+ UnlinkedBCOExpr) )
+\end{code}
-hscExpr dflags hst hit pcs this_module expr
- = do { -- Parse it
- ; maybe_parsed <- myParseExpr dflags expr
- ; case maybe_parsed of {
- Nothing -> return (HscFail pcs_ch);
- Just parsed_expr -> do {
+When the UnlinkedBCOExpr is linked you get an HValue of type
+ IO [HValue]
+When you run it you get a list of HValues that should be
+the same length as the list of names; add them to the ClosureEnv.
+
+A naked expression returns a singleton Name [it].
+
+ What you type The IO [HValue] that hscStmt returns
+ ------------- ------------------------------------
+ let pat = expr ==> let pat = expr in return [coerce HVal x, coerce HVal y, ...]
+ bindings: [x,y,...]
+
+ pat <- expr ==> expr >>= \ pat -> return [coerce HVal x, coerce HVal y, ...]
+ bindings: [x,y,...]
+
+ expr (of IO type) ==> expr >>= \ v -> return [v]
+ [NB: result not printed] bindings: [it]
+
+
+ expr (of non-IO type,
+ result showable) ==> let v = expr in print v >> return [v]
+ bindings: [it]
+
+ expr (of non-IO type,
+ result not showable) ==> error
+
+\begin{code}
+hscStmt dflags hst hit pcs0 icontext stmt
+ = let
+ InteractiveContext {
+ ic_rn_env = rn_env,
+ ic_type_env = type_env,
+ ic_module = this_mod } = icontext
+ in
+ do { maybe_stmt <- hscParseStmt dflags stmt
+ ; case maybe_stmt of
+ Nothing -> return (pcs0, Nothing)
+ Just parsed_stmt -> do {
-- Rename it
- (new_pcs, maybe_renamed_expr) <- renameExpr dflags hit hst pcs this_module parsed_expr ;
- case maybe_renamed_expr of {
- Nothing ->
+ (pcs1, print_unqual, maybe_renamed_stmt)
+ <- renameStmt dflags hit hst pcs0 this_mod rn_env parsed_stmt
+ ; case maybe_renamed_stmt of
+ Nothing -> return (pcs0, Nothing)
+ Just (bound_names, rn_stmt) -> do {
+
+ -- Typecheck it
+ maybe_tc_return <- typecheckStmt dflags pcs1 hst type_env
+ print_unqual this_mod bound_names rn_stmt
+ ; case maybe_tc_return of {
+ Nothing -> return (pcs0, Nothing) ;
+ Just (pcs2, tc_expr, bound_ids) -> do {
+
+ -- Desugar it
+ ds_expr <- deSugarExpr dflags pcs2 hst this_mod print_unqual tc_expr
+
+ -- Simplify it
+ ; simpl_expr <- simplifyExpr dflags pcs2 hst ds_expr
+
+ -- Saturate it
+ ; sat_expr <- coreSatExpr dflags simpl_expr
+
+ -- Convert to BCOs
+ ; bcos <- coreExprToBCOs dflags sat_expr
+
+ ; let
+ -- make all the bound ids "constant" ids, now that
+ -- they're notionally top-level bindings. This is
+ -- important: otherwise when we come to compile an expression
+ -- using these ids later, the byte code generator will consider
+ -- the occurrences to be free rather than global.
+ constant_bound_ids = map constantizeId bound_ids
+ constantizeId id
+ = modifyIdInfo (`setFlavourInfo` makeConstantFlavour
+ (idFlavour id)) id
+
+ new_rn_env = extendLocalRdrEnv rn_env
+ (map idName constant_bound_ids)
+ -- Extend the renamer-env from bound_ids, not bound_names,
+ -- because the latter may contain [it] when the former is empty
+
+ new_type_env = extendNameEnvList type_env
+ [(getName id, AnId id) | id <- constant_bound_ids]
+
+ new_icontext = icontext { ic_rn_env = new_rn_env,
+ ic_type_env = new_type_env }
+ ; return (pcs2, Just (new_icontext, bound_ids, bcos))
+ }}}}}
+
+hscParseStmt :: DynFlags -> String -> IO (Maybe RdrNameStmt)
+hscParseStmt dflags str
+ = do -------------------------- Parser ----------------
+ showPass dflags "Parser"
+ _scc_ "Parser" do
+
+ buf <- stringToStringBuffer str
+
+ let glaexts | dopt Opt_GlasgowExts dflags = 1#
+ | otherwise = 0#
+ case parseStmt buf PState{ bol = 0#, atbol = 1#,
+ context = [], glasgow_exts = glaexts,
+ loc = mkSrcLoc SLIT("<no file>") 0 } of {
+
+ PFailed err -> do { hPutStrLn stderr (showSDoc err);
+-- Not yet implemented in <4.11 freeStringBuffer buf;
+ return Nothing };
+
+ -- no stmt: the line consisted of just space or comments
+ POk _ Nothing -> return Nothing;
+
+ POk _ (Just rdr_stmt) -> 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_stmt);
+ return (Just rdr_stmt)
+ }}
+#endif
+\end{code}
%************************************************************************
%* *
)
initPersistentRenamerState :: IO PersistentRenamerState
- = do ns <- mkSplitUniqSupply 'r'
+ = do us <- mkSplitUniqSupply 'r'
return (
- PRS { prsOrig = Orig { origNames = initOrigNames,
- origIParam = emptyFM },
- prsDecls = (emptyNameEnv, 0),
- prsInsts = (emptyBag, 0),
- prsRules = (emptyBag, 0),
- prsNS = ns
+ PRS { prsOrig = NameSupply { nsUniqs = us,
+ nsNames = initOrigNames,
+ nsIPs = emptyFM },
+ prsDecls = (emptyNameEnv, 0),
+ prsInsts = (emptyBag, 0),
+ prsRules = (emptyBag, 0),
+ prsImpMods = emptyFM
}
)
projects / ghc-hetmet.git / blobdiff