\section[GHC_Main]{Main driver for Glasgow Haskell compiler}
\begin{code}
-module HscMain ( HscResult(..), hscMain, hscExpr,
+module HscMain ( HscResult(..), hscMain,
+#ifdef GHCI
+ hscExpr,
+#endif
initPersistentCompilerState ) where
#include "HsVersions.h"
#ifdef GHCI
import RdrHsSyn ( RdrNameHsExpr )
-import CoreToStg ( coreToStgExpr )
+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 Parser
import Lex ( PState(..), ParseResult(..) )
import SrcLoc ( mkSrcLoc )
-import Rename
+import Rename ( checkOldIface, renameModule, closeIfaceDecls )
import Rules ( emptyRuleBase )
import PrelInfo ( wiredInThingEnv, wiredInThings )
import PrelNames ( knownKeyNames )
import InstEnv ( emptyInstEnv )
import Desugar
import SimplCore
-import OccurAnal ( occurAnalyseBinds )
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 Module ( ModuleName, moduleName, mkHomeModule )
import CmdLineOpts
import ErrUtils ( dumpIfSet_dyn, showPass )
import Util ( unJust )
import Monad ( when )
import Maybe ( isJust )
-import IO ( hPutStrLn, stderr )
+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
++ ", hspp = " ++ show (ml_hspp_file location));
(pcs_ch, errs_found, (recomp_reqd, maybe_checked_iface))
- <- checkOldIface dflags hit hst pcs
+ <- checkOldIface ghci_mode dflags hit hst pcs
(unJust "hscMain" (ml_hi_file location))
source_unchanged maybe_old_iface;
-- we definitely expect to have the old interface available
hscNoRecomp ghci_mode dflags location (Just old_iface) hst hit pcs_ch
| ghci_mode == OneShot
- = return (HscOK
- (panic "hscNoRecomp:OneShot") -- no details
- Nothing -- makes run_phase Hsc stop
- Nothing Nothing -- foreign export stuff
- Nothing -- ibinds
- pcs_ch)
+ = do {
+ hPutStrLn stderr "compilation IS NOT required";
+ let { bomb = panic "hscNoRecomp:OneShot" };
+ return (HscNoRecomp pcs_ch bomb bomb)
+ }
| otherwise
= do {
- hPutStrLn stderr "COMPILATION NOT REQUIRED";
- ;
+ hPutStr stderr "compilation IS NOT required";
+ when (verbosity dflags /= 1) $ hPutStrLn stderr "";
+
-- CLOSURE
(pcs_cl, closure_errs, cl_hs_decls)
<- closeIfaceDecls dflags hit hst pcs_ch old_iface ;
Just (pcs_tc, tc_result) -> do {
let 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)
}}}}
hscRecomp ghci_mode dflags location maybe_checked_iface hst hit pcs_ch
= do {
- ; hPutStrLn stderr "COMPILATION IS REQUIRED";
+ ; 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
; 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
-------------------
- ; showPass dflags "Rename"
; (pcs_rn, maybe_rn_result)
<- renameModule dflags hit hst pcs_ch this_mod rdr_module
; case maybe_rn_result of {
-------------------
-- TYPECHECK
-------------------
- ; showPass dflags "Typecheck"
; maybe_tc_result <- 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) } ;
+ Nothing -> return (HscFail pcs_rn);
Just (pcs_tc, tc_result) -> do {
- ; let 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_tc hst this_mod
- print_unqualified is_exported tc_result
- ; let (tidy_binds, orphan_rules, foreign_stuff) = simpl_result
-
+ ; (ds_binds, ds_rules, foreign_stuff)
+ <- 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 is_exported 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
+ ; 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 oa_tidy_binds
- hit (pcs_PIT pcs_tc)
+ cost_centre_info foreign_stuff env_tc stg_binds tidy_binds
+ 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_ibinds)
}}}}}}}
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,
}}
+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 oa_tidy_binds
+ foreign_stuff env_tc stg_binds tidy_binds
hit pit -- these last two for mapping ModNames to Modules
| toInterp
= do (ibinds,itbl_env)
-- _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 pcs hst this_mod print_unqual is_exported tc_result
- = do -------------------------- Desugaring ----------------
- showPass dflags "DeSugar"
- -- _scc_ "DeSugar"
- (desugared, rules, h_code, c_code, fe_binders)
- <- deSugar dflags pcs hst this_mod print_unqual tc_result
-
- -------------------------- Main Core-language transformations ----------------
- -- _scc_ "Core2Core"
- (simplified, orphan_rules)
- <- core2core dflags pcs hst is_exported desugared rules
-
- -- Do the final tidy-up
- showPass dflags "TidyCore"
- (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
- 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
+ --let bcos = byteCodeGen tidy_binds
+ --putStrLn (showSDoc (vcat (map ppr bcos)))
+
-- _scc_ "Core2Stg"
- stg_binds <- topCoreBindsToStg dflags occ_anal_tidy_binds
+ stg_binds <- 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) <- 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}
%************************************************************************
\begin{code}
+#ifdef GHCI
hscExpr
:: DynFlags
-> HomeSymbolTable
-> PersistentCompilerState -- IN: persistent compiler state
-> Module -- Context for compiling
-> String -- The expression
- -> IO ( PersistentCompilerState, Maybe UnlinkedIExpr )
-
-#ifndef GHCI
-hscExpr dflags hst hit pcs this_module expr
- = panic "hscExpr: non-interactive build"
-#else
+ -> IO ( PersistentCompilerState,
+ Maybe (UnlinkedIExpr, PrintUnqualified, Type) )
hscExpr dflags hst hit pcs0 this_module expr
- = do { -- Parse it
+ = do {
maybe_parsed <- hscParseExpr dflags expr;
case maybe_parsed of
Nothing -> return (pcs0, Nothing)
-- 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) -> do {
+ 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
-- Simplify it
simpl_expr <- simplifyExpr dflags pcs2 hst ds_expr;
+ -- Saturate it
+ sat_expr <- coreSatExpr dflags simpl_expr;
+
-- Convert to STG
- stg_expr <- coreToStgExpr dflags simpl_expr;
+ let stg_expr = coreExprToStg sat_expr;
- -- ToDo: need to do StgVarInfo? or SRTs?
+ -- ToDo: need to do SRTs?
-- Convert to InterpSyn
unlinked_iexpr <- stgExprToInterpSyn dflags stg_expr;
- return (pcs2, Just unlinked_iexpr);
+ return (pcs2, Just (unlinked_iexpr, print_unqual, ty));
}}}}
hscParseExpr :: DynFlags -> String -> IO (Maybe RdrNameHsExpr)
-- of the string...)
let glaexts = 1#
--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 SLIT("<no file>") 0 } of {
- PFailed err -> do { freeStringBuffer buf
- ; hPutStrLn stderr (showSDoc err)
- ; return Nothing };
+ PFailed err -> do { freeStringBuffer buf;
+ hPutStrLn stderr (showSDoc err);
+ return Nothing };
POk _ (PExpr rdr_expr) -> do {
- -- ToDo:
- -- freeStringBuffer buf;
-
+ --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
initPersistentRenamerState :: IO PersistentRenamerState
= do ns <- mkSplitUniqSupply 'r'
return (
- PRS { prsOrig = Orig { origNames = initOrigNames,
+ PRS { prsOrig = Orig { origNS = ns,
+ origNames = initOrigNames,
origIParam = emptyFM },
prsDecls = (emptyNameEnv, 0),
prsInsts = (emptyBag, 0),
- prsRules = (emptyBag, 0),
- prsNS = ns
+ prsRules = (emptyBag, 0)
}
)
projects / ghc-hetmet.git / blobdiff