\begin{code}
module HscMain ( HscResult(..), hscMain,
#ifdef GHCI
- hscStmt,
+ hscStmt, hscThing,
#endif
initPersistentCompilerState ) where
#include "HsVersions.h"
#ifdef GHCI
+import Interpreter
import ByteCodeGen ( byteCodeGen )
import CoreTidy ( tidyCoreExpr )
import CorePrep ( corePrepExpr )
-import Rename ( renameStmt )
+import Rename ( renameStmt, renameRdrName )
+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(..) )
import PrelNames ( iNTERACTIVE )
import StringBuffer ( stringToStringBuffer )
+import FastString ( mkFastString )
+import Maybes ( catMaybes )
#endif
import HsSyn
+import RdrName ( mkRdrOrig )
import Id ( idName )
import IdInfo ( CafInfo(..), CgInfoEnv, CgInfo(..) )
import StringBuffer ( hGetStringBuffer, freeStringBuffer )
import Rename ( checkOldIface, renameModule, closeIfaceDecls )
import Rules ( emptyRuleBase )
import PrelInfo ( wiredInThingEnv, wiredInThings )
+import PrelRules ( builtinRules )
import PrelNames ( knownKeyNames )
import MkIface ( mkFinalIface )
import TcModule
import Util ( unJust )
import UniqSupply ( mkSplitUniqSupply )
-import Bag ( emptyBag )
+import Bag ( consBag, emptyBag )
import Outputable
-import Interpreter
import HscStats ( ppSourceStats )
import HscTypes
import FiniteMap ( FiniteMap, plusFM, emptyFM, addToFM )
ModIface -- new iface (if any compilation was done)
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
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)
}
= do {
-- what target are we shooting for?
; let toInterp = dopt_HscLang dflags == HscInterpreted
+ ; let toNothing = dopt_HscLang dflags == HscNothing
; when (verbosity dflags >= 1) $
hPutStrLn stderr ("Compiling " ++
; (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
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 ------------------
mkFinalIface ghci_mode dflags location
maybe_checked_iface new_iface tidy_details
- ------------------ 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)
+ 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)
; let final_details = tidy_details {md_binds = []}
\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 {
-- 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
+ iNTERACTIVE icontext parsed_stmt
; case maybe_renamed_stmt of
Nothing -> return (pcs0, Nothing)
maybe_tc_return <-
if just_expr
then case rn_stmt of { (ExprStmt e _ _, decls) ->
- typecheckExpr dflags pcs1 hst type_env
+ typecheckExpr dflags pcs1 hst (ic_type_env icontext)
print_unqual iNTERACTIVE (e,decls) }
- else typecheckStmt dflags pcs1 hst type_env
+ else typecheckStmt dflags pcs1 hst (ic_type_env icontext)
print_unqual iNTERACTIVE bound_names rn_stmt
; case maybe_tc_return of
case parseStmt buf PState{ bol = 0#, atbol = 1#,
context = [], glasgow_exts = glaexts,
- loc = mkSrcLoc SLIT("<no file>") 0 } of {
+ loc = mkSrcLoc SLIT("<interactive>") 1 } 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 icontext 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 iNTERACTIVE icontext 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 maybe_ty_things = map (lookupType hst (pcs_PTE pcs)) names
+ in
+ return (pcs, catMaybes maybe_ty_things) }
+ }}}
+
+myParseIdentifier dflags str
+ = do buf <- stringToStringBuffer str
+
+ let glaexts | dopt Opt_GlasgowExts dflags = 1#
+ | otherwise = 0#
+
+ case parseIdentifier buf
+ PState{ bol = 0#, atbol = 1#,
+ context = [], glasgow_exts = glaexts,
+ loc = mkSrcLoc SLIT("<interactive>") 1 } 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{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
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