\begin{code}
module TcRnDriver (
#ifdef GHCI
- mkGlobalContext, getModuleContents,
+ mkGlobalContext, getModuleContents, tcRnStmt, tcRnThing, tcRnExpr,
#endif
tcRnModule, checkOldIface,
importSupportingDecls, tcTopSrcDecls,
- tcRnIface, tcRnExtCore, tcRnStmt, tcRnExpr, tcRnThing
+ tcRnIface, tcRnExtCore
) where
#include "HsVersions.h"
#endif
import CmdLineOpts ( DynFlag(..), opt_PprStyle_Debug, dopt )
+import DriverState ( v_MainModIs, v_MainFunIs )
+import DriverUtil ( split_longest_prefix )
import HsSyn ( HsModule(..), HsBinds(..), MonoBinds(..), HsExpr(..),
Stmt(..), Pat(VarPat), HsStmtContext(..), RuleDecl(..),
HsGroup(..), SpliceDecl(..),
import RdrHsSyn ( RdrNameHsModule, RdrNameHsDecl, RdrNameStmt, RdrNameHsExpr,
emptyGroup, mkGroup, findSplice, addImpDecls, main_RDR_Unqual )
-import PrelNames ( iNTERACTIVE, ioTyConName, printName,
- returnIOName, bindIOName, failIOName, thenIOName, runIOName,
- dollarMainName, itName, mAIN_Name
+import PrelNames ( iNTERACTIVE, ioTyConName, printName, monadNames,
+ returnIOName, runIOName,
+ dollarMainName, itName, mAIN_Name, unsafeCoerceName
)
import MkId ( unsafeCoerceId )
import RdrName ( RdrName, getRdrName, mkRdrUnqual,
zonkTopExpr, zonkTopBndrs
)
-import TcExpr ( tcInferRho )
+import TcExpr ( tcInferRho, tcCheckRho )
import TcRnMonad
import TcMType ( newTyVarTy, zonkTcType )
import TcType ( Type, liftedTypeKind,
- tyVarsOfType, tcFunResultTy,
+ tyVarsOfType, tcFunResultTy, tidyTopType,
mkForAllTys, mkFunTys, mkTyConApp, tcSplitForAllTys
)
-import TcMatches ( tcStmtsAndThen )
-import Inst ( showLIE )
+import TcMatches ( tcStmtsAndThen, TcStmtCtxt(..) )
+import Inst ( showLIE, tcStdSyntaxName )
import TcBinds ( tcTopBinds )
import TcClassDcl ( tcClassDecls2 )
import TcDefaults ( tcDefaults )
import Id ( Id, mkLocalId, isLocalId, idName, idType, idUnfolding, setIdLocalExported )
import IdInfo ( GlobalIdDetails(..) )
import Var ( Var, setGlobalIdDetails )
-import Module ( Module, moduleName, moduleUserString, moduleEnvElts )
+import Module ( Module, ModuleName, mkHomeModule, mkModuleName, moduleName, moduleUserString, moduleEnvElts )
+import OccName ( mkVarOcc )
import Name ( Name, isExternalName, getSrcLoc, nameOccName )
import NameEnv ( delListFromNameEnv )
import NameSet
isLocalGRE )
#endif
+import DATA_IOREF ( readIORef )
+import FastString ( mkFastString )
import Panic ( showException )
import List ( partition )
import Util ( sortLt )
-> IO (PersistentCompilerState, Maybe TcGblEnv)
tcRnModule hsc_env pcs
- (HsModule this_mod _ exports import_decls local_decls mod_deprec loc)
+ (HsModule maybe_mod exports import_decls local_decls mod_deprec loc)
= do { showPass (hsc_dflags hsc_env) "Renamer/typechecker" ;
+ let { this_mod = case maybe_mod of
+ Nothing -> mkHomeModule mAIN_Name -- 'module M where' is omitted
+ Just mod -> mod } ; -- The normal case
+
initTc hsc_env pcs this_mod $ addSrcLoc loc $
do { -- Deal with imports; sets tcg_rdr_env, tcg_imports
(rdr_env, imports) <- rnImports import_decls ;
$ do {
-- Process the export list
- export_avails <- exportsFromAvail exports ;
+ export_avails <- exportsFromAvail maybe_mod exports ;
updGblEnv (\gbl -> gbl { tcg_exports = export_avails })
$ do {
%************************************************************************
\begin{code}
+#ifdef GHCI
tcRnStmt :: HscEnv -> PersistentCompilerState
-> InteractiveContext
-> RdrNameStmt
---------------------------
tc_stmts stmts
- = do { io_ids <- mappM tcLookupId
- [returnIOName, failIOName, bindIOName, thenIOName] ;
- ioTyCon <- tcLookupTyCon ioTyConName ;
- res_ty <- newTyVarTy liftedTypeKind ;
+ = do { ioTyCon <- tcLookupTyCon ioTyConName ;
let {
- names = collectStmtsBinders stmts ;
- return_id = head io_ids ; -- Rather gruesome
+ ret_ty = mkListTy unitTy ;
+ names = collectStmtsBinders stmts ;
+
+ stmt_ctxt = SC { sc_what = DoExpr,
+ sc_rhs = check_rhs,
+ sc_body = check_body,
+ sc_ty = ret_ty } ;
- io_ty = (\ ty -> mkTyConApp ioTyCon [ty], res_ty) ;
+ check_rhs rhs rhs_ty = tcCheckRho rhs (mkTyConApp ioTyCon [rhs_ty]) ;
+ check_body body = tcCheckRho body (mkTyConApp ioTyCon [ret_ty]) ;
- -- mk_return builds the expression
- -- returnIO @ [()] [coerce () x, .., coerce () z]
- mk_return ids = HsApp (TyApp (HsVar return_id) [mkListTy unitTy])
- (ExplicitList unitTy (map mk_item ids)) ;
+ -- ret_expr is the expression
+ -- returnIO [coerce () x, .., coerce () z]
+ ret_stmt = ResultStmt ret_expr noSrcLoc ;
+ ret_expr = HsApp (HsVar returnIOName)
+ (ExplicitList placeHolderType (map mk_item names)) ;
+ mk_item name = HsApp (HsVar unsafeCoerceName) (HsVar name) ;
- mk_item id = HsApp (TyApp (HsVar unsafeCoerceId) [idType id, unitTy])
- (HsVar id) } ;
+ all_stmts = stmts ++ [ret_stmt] ;
+
+ io_ty = mkTyConApp ioTyCon []
+ } ;
-- OK, we're ready to typecheck the stmts
traceTc (text "tcs 2") ;
((ids, tc_stmts), lie) <-
- getLIE $ tcStmtsAndThen combine DoExpr io_ty stmts $
+ getLIE $
+ tcStmtsAndThen combine stmt_ctxt all_stmts $
do {
-- Look up the names right in the middle,
-- where they will all be in scope
ids <- mappM tcLookupId names ;
- return (ids, [ResultStmt (mk_return ids) noSrcLoc])
+ return (ids, [])
} ;
-- Simplify the context right here, so that we fail
const_binds <- tcSimplifyTop lie ;
-- Build result expression and zonk it
+ io_ids <- mappM (tcStdSyntaxName DoOrigin io_ty) monadNames ;
let { expr = mkHsLet const_binds $
HsDo DoExpr tc_stmts io_ids
- (mkTyConApp ioTyCon [mkListTy unitTy]) noSrcLoc } ;
+ (mkTyConApp ioTyCon [ret_ty]) noSrcLoc } ;
zonked_expr <- zonkTopExpr expr ;
zonked_ids <- zonkTopBndrs ids ;
= initRn CmdLineMode $
setLocalRdrEnv (ic_rn_local_env ictxt) $
rn_thing
+#endif
\end{code}
%************************************************************************
-> IO (PersistentCompilerState, Maybe ModGuts)
-- Nothing => some error occurred
-tcRnExtCore hsc_env pcs
- (HsModule this_mod _ _ _ local_decls _ loc)
+tcRnExtCore hsc_env pcs (HsModule (Just this_mod) _ _ decls _ loc)
+ -- For external core, the module name is syntactically reqd
-- Rename the (Core) module. It's a bit like an interface
-- file: all names are original names
= do { showPass (hsc_dflags hsc_env) "Renamer/typechecker" ;
-- Rename the source, only in interface mode.
-- rnSrcDecls handles fixity decls etc too, which won't occur
-- but that doesn't matter
- let { local_group = mkGroup local_decls } ;
- (_, rn_local_decls, dus) <- initRn (InterfaceMode this_mod)
+ let { local_group = mkGroup decls } ;
+ (_, rn_decls, dus) <- initRn (InterfaceMode this_mod)
(rnSrcDecls local_group) ;
failIfErrsM ;
-- Get the supporting decls
rn_imp_decls <- slurpImpDecls (duUses dus) ;
- let { rn_decls = rn_local_decls `addImpDecls` rn_imp_decls } ;
+ let { rn_decls = rn_decls `addImpDecls` rn_imp_decls } ;
-- Dump trace of renaming part
rnDump (ppr rn_decls) ;
setGblEnv tcg_env $ do {
-- Now the core bindings
- core_prs <- tcCoreBinds (hs_coreds rn_local_decls) ;
+ core_prs <- tcCoreBinds (hs_coreds rn_decls) ;
tcExtendGlobalValEnv (map fst core_prs) $ do {
-- Wrap up
final_type_env = extendTypeEnvWithIds (tcg_type_env tcg_env) bndrs ;
mod_guts = ModGuts { mg_module = this_mod,
- mg_usages = [], -- ToDo: compute usage
- mg_dir_imps = [], -- ??
+ mg_usages = [], -- ToDo: compute usage
+ mg_dir_imps = [], -- ??
mg_deps = noDependencies, -- ??
mg_exports = my_exports,
mg_types = final_type_env,
setEnvs tc_envs $
- -- If there is no splice, we're nearlydone
+ -- If there is no splice, we're nearly done
case group_tail of {
Nothing -> do { -- Last thing: check for `main'
(tcg_env, main_fvs) <- checkMain ;
checkMain
= do { ghci_mode <- getGhciMode ;
tcg_env <- getGblEnv ;
- check_main ghci_mode tcg_env
+
+ mb_main_mod <- readMutVar v_MainModIs ;
+ mb_main_fn <- readMutVar v_MainFunIs ;
+ let { main_mod = case mb_main_mod of {
+ Just mod -> mkModuleName mod ;
+ Nothing -> mAIN_Name } ;
+ main_fn = case mb_main_fn of {
+ Just fn -> mkRdrUnqual (mkVarOcc (mkFastString fn)) ;
+ Nothing -> main_RDR_Unqual } } ;
+
+ check_main ghci_mode tcg_env main_mod main_fn
}
-check_main ghci_mode tcg_env
+
+check_main ghci_mode tcg_env main_mod main_fn
-- If we are in module Main, check that 'main' is defined.
-- It may be imported from another module, in which case
-- we have to drag in its.
--
-- Blimey: a whole page of code to do this...
- | mod_name /= mAIN_Name
+ | mod_name /= main_mod
= return (tcg_env, emptyFVs)
-- Check that 'main' is in scope
--
-- We use a guard for this (rather than letting lookupSrcName fail)
-- because it's not an error in ghci)
- | not (main_RDR_Unqual `elemRdrEnv` rdr_env)
+ | not (main_fn `elemRdrEnv` rdr_env)
= do { complain_no_main; return (tcg_env, emptyFVs) }
- | otherwise
- = do { main_name <- lookupSrcName main_RDR_Unqual ;
+ | otherwise -- OK, so the appropriate 'main' is in scope
+ --
+ = do { main_name <- lookupSrcName main_fn ;
tcg_env <- importSupportingDecls (unitFV runIOName) ;
-- In other modes, fail altogether, so that we don't go on
-- and complain a second time when processing the export list.
- mainCtxt = ptext SLIT("When checking the type of 'main'")
- noMainMsg = ptext SLIT("No 'main' defined in module Main")
+ mainCtxt = ptext SLIT("When checking the type of the main function") <+> quotes (ppr main_fn)
+ noMainMsg = ptext SLIT("The main function") <+> quotes (ppr main_fn)
+ <+> ptext SLIT("is not defined in module") <+> quotes (ppr main_mod)
\end{code}
, ppr_insts dfun_ids
, vcat (map ppr rules)
, ppr_gen_tycons (typeEnvTyCons type_env)
- , ppr (moduleEnvElts (imp_dep_mods imports))
- , ppr (imp_dep_pkgs imports)]
+ , ptext SLIT("Dependent modules:") <+> ppr (moduleEnvElts (imp_dep_mods imports))
+ , ptext SLIT("Dependent packages:") <+> ppr (imp_dep_pkgs imports)]
pprModGuts :: ModGuts -> SDoc
pprModGuts (ModGuts { mg_types = type_env,
-- Convert to HsType so that we get source-language style printing
-- And sort by RdrName
= vcat $ map ppr_sig $ sortLt lt_sig $
- [ (getRdrName id, toHsType (idType id))
+ [ (getRdrName id, toHsType (tidyTopType (idType id)))
| id <- ids ]
where
lt_sig (n1,_) (n2,_) = n1 < n2
ptext SLIT("#-}")]
ppr_gen_tycons [] = empty
-ppr_gen_tycons tcs = vcat [ptext SLIT("{-# Generic type constructor details"),
- vcat (map ppr_gen_tycon tcs),
- ptext SLIT("#-}")
+ppr_gen_tycons tcs = vcat [ptext SLIT("Generic type constructor details:"),
+ nest 2 (vcat (map ppr_gen_tycon tcs))
]
-- x&y are now Id's, not CoreExpr's
projects / ghc-hetmet.git / blobdiff