\section[GHC_Main]{Main driver for Glasgow Haskell compiler}
\begin{code}
-module HscMain ( HscResult(..), hscMain,
+module HscMain ( HscResult(..), hscMain, hscExpr,
initPersistentCompilerState ) where
#include "HsVersions.h"
import IO ( hPutStrLn, stderr )
import HsSyn
-import StringBuffer ( hGetStringBuffer )
+import StringBuffer ( hGetStringBuffer,
+ stringToStringBuffer, freeStringBuffer )
import Parser
+import RdrHsSyn ( RdrNameHsExpr )
import Lex ( PState(..), ParseResult(..) )
import SrcLoc ( mkSrcLoc )
-import Rename ( renameModule, checkOldIface, closeIfaceDecls )
+import Rename
import Rules ( emptyRuleBase )
import PrelInfo ( wiredInThingEnv, wiredInThings )
import PrelNames ( knownKeyNames )
import MkIface ( completeIface, mkModDetailsFromIface, mkModDetails,
writeIface, pprIface )
-import TcModule ( TcResults(..), typecheckModule )
+import TcModule
import InstEnv ( emptyInstEnv )
-import Desugar ( deSugar )
-import SimplCore ( core2core )
+import Desugar
+import SimplCore
import OccurAnal ( occurAnalyseBinds )
import CoreUtils ( coreBindsSize )
import CoreTidy ( tidyCorePgm )
-import CoreToStg ( topCoreBindsToStg )
+import CoreToStg ( topCoreBindsToStg, coreToStgExpr )
import StgSyn ( collectFinalStgBinders )
import SimplStg ( stg2stg )
import CodeGen ( codeGen )
import Bag ( emptyBag )
import Outputable
-import Interpreter ( UnlinkedIBind, ItblEnv, stgToInterpSyn )
+import Interpreter
import CmStaticInfo ( GhciMode(..) )
import HscStats ( ppSourceStats )
import HscTypes ( ModDetails, ModIface(..), PersistentCompilerState(..),
hscMain ghci_mode dflags source_unchanged location 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 dflags hit hst pcs
+ (unJust (ml_hi_file location) "hscMain")
+ source_unchanged maybe_old_iface;
if errs_found then
return (HscFail pcs_ch)
-------------------
-- 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 {
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
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
<- 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
myCoreToStg dflags this_mod tidy_binds
= do
- c2s_uniqs <- mkSplitUniqSupply 'c'
st_uniqs <- mkSplitUniqSupply 'g'
let occ_anal_tidy_binds = occurAnalyseBinds tidy_binds
-- 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
+ stg_binds <- topCoreBindsToStg dflags occ_anal_tidy_binds
showPass dflags "Stg2Stg"
-- _scc_ "Stg2Stg"
%* *
%************************************************************************
+\begin{code}
hscExpr
:: DynFlags
-> HomeSymbolTable
-> PersistentCompilerState -- IN: persistent compiler state
-> Module -- Context for compiling
-> String -- The expression
- -> IO HscResult
+ -> IO ( PersistentCompilerState, Maybe UnlinkedIExpr )
-hscExpr dflags hst hit pcs this_module expr
+hscExpr dflags hst hit pcs0 this_module expr
= do { -- Parse it
- maybe_parsed <- myParseExpr dflags expr
- ; case maybe_parsed of {
- Nothing -> return (HscFail pcs_ch);
+ maybe_parsed <- hscParseExpr dflags expr;
+ case maybe_parsed of
+ Nothing -> return (pcs0, Nothing)
Just parsed_expr -> do {
-- Rename it
- (new_pcs, maybe_renamed_expr) <- renameExpr dflags hit hst pcs this_module parsed_expr ;
- ; case maybe_renamed_expr of {
- Nothing -> FAIL
- Just (print_unqual, rn_expr) ->
+ (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_expr <- typecheckExpr dflags pcs hst print_unqual rn_expr
- ; case maybe_tc_expr of
- Nothing -> FAIL
- Just tc_expr ->
+ maybe_tc_expr <- typecheckExpr dflags pcs1 hst print_unqual rn_expr;
+ case maybe_tc_expr of
+ Nothing -> return (pcs1, Nothing)
+ Just tc_expr -> do {
-- Desugar it
- ; ds_expr <- deSugarExpr dflags pcs hst this_module print_unqual tc_expr
+ ds_expr <- deSugarExpr dflags pcs1 hst this_module
+ print_unqual tc_expr;
-- Simplify it
- ; simpl_expr <- simplifyExpr dflags pcs hst ds_expr
+ simpl_expr <- simplifyExpr dflags pcs1 hst ds_expr;
- ; return I'M NOT SURE
- }
+ -- Convert to STG
+ stg_expr <- coreToStgExpr dflags simpl_expr;
-
+ -- ToDo: need to do StgVarInfo? or SRTs?
+
+ -- Convert to InterpSyn
+ unlinked_iexpr <- stgExprToInterpSyn dflags stg_expr;
+
+ return (pcs1, Just unlinked_iexpr);
+ }}}}
+
+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:
+ -- freeStringBuffer buf;
+
+ dumpIfSet_dyn dflags Opt_D_dump_parsed "Parser" (ppr rdr_expr);
+
+ return (Just rdr_expr)
+ }}
+\end{code}
%************************************************************************
%* *
projects / ghc-hetmet.git / blobdiff