module TcModule (
typecheckModule,
- TcResults(..),
- TcResultBinds(..),
- TcIfaceInfo(..),
- TcLocalTyConsAndClasses(..),
- TcSpecialiseRequests(..),
- TcDDumpDeriv(..)
+ SYN_IE(TcResults),
+ SYN_IE(TcResultBinds),
+ SYN_IE(TcIfaceInfo),
+ SYN_IE(TcSpecialiseRequests),
+ SYN_IE(TcDDumpDeriv)
) where
-import Ubiq{-uitous-}
+IMP_Ubiq(){-uitous-}
import HsSyn ( HsModule(..), HsBinds(..), Bind, HsExpr,
TyDecl, SpecDataSig, ClassDecl, InstDecl,
SpecInstSig, DefaultDecl, Sig, Fake, InPat,
FixityDecl, IE, ImportDecl
)
-import RnHsSyn ( RenamedHsModule(..), RenamedFixityDecl(..) )
-import TcHsSyn ( TypecheckedHsBinds(..), TypecheckedHsExpr(..),
+import RnHsSyn ( SYN_IE(RenamedHsModule), RenamedFixityDecl(..) )
+import TcHsSyn ( SYN_IE(TypecheckedHsBinds), SYN_IE(TypecheckedHsExpr),
TcIdOcc(..), zonkBinds, zonkDictBinds )
import TcMonad hiding ( rnMtoTcM )
import TcEnv ( tcExtendGlobalValEnv, getEnv_LocalIds,
getEnv_TyCons, getEnv_Classes,
tcLookupLocalValueByKey, tcLookupTyConByKey )
+import SpecEnv ( SpecEnv )
import TcIfaceSig ( tcInterfaceSigs )
import TcInstDcls ( tcInstDecls1, tcInstDecls2 )
import TcInstUtil ( buildInstanceEnvs, InstInfo )
import Bag ( listToBag )
import Class ( GenClass, classSelIds )
-import ErrUtils ( Warning(..), Error(..) )
-import Id ( GenId, isDataCon, isMethodSelId, idType, IdEnv(..), nullIdEnv )
+import ErrUtils ( SYN_IE(Warning), SYN_IE(Error) )
+import Id ( idType, isMethodSelId, isTopLevId, GenId, SYN_IE(IdEnv), nullIdEnv )
import Maybes ( catMaybes )
-import Name ( isExported, isLocallyDefined )
+import Name ( isLocallyDefined )
import Pretty
-import RnUtils ( RnEnv(..) )
-import TyCon ( isDataTyCon, TyCon )
-import Type ( mkSynTy )
+import RnUtils ( SYN_IE(RnEnv) )
+import TyCon ( TyCon )
+import Type ( applyTyCon )
import TysWiredIn ( unitTy, mkPrimIoTy )
-import TyVar ( TyVarEnv(..), nullTyVarEnv )
+import TyVar ( SYN_IE(TyVarEnv), nullTyVarEnv )
import Unify ( unifyTauTy )
import UniqFM ( lookupUFM_Directly, lookupWithDefaultUFM_Directly,
filterUFM, eltsUFM )
-import Unique ( iOTyConKey, mainIdKey, mainPrimIOIdKey )
+import Unique ( iOTyConKey )
import Util
-import FiniteMap ( emptyFM )
+import FiniteMap ( emptyFM, FiniteMap )
tycon_specs = emptyFM
\end{code}
type TcResults
= (TcResultBinds,
TcIfaceInfo,
- TcLocalTyConsAndClasses,
TcSpecialiseRequests,
TcDDumpDeriv)
type TcIfaceInfo -- things for the interface generator
= ([Id], [TyCon], [Class], Bag InstInfo)
-type TcLocalTyConsAndClasses -- things defined in this module
- = ([TyCon], [Class])
- -- not sure the classes are used at all (ToDo)
-
type TcSpecialiseRequests
= FiniteMap TyCon [(Bool, [Maybe Type])]
-- source tycon specialisation requests
-- pragmas, which is done lazily [ie failure just drops the pragma
-- without having any global-failure effect].
+ -- trace "tc1" $
+
fixTc (\ ~(_, _, _, _, _, _, sig_ids) ->
+
+ -- trace "tc2" $
tcExtendGlobalValEnv sig_ids (
-- The knot for instance information. This isn't used at all
tcTyAndClassDecls1 rec_inst_mapper ty_decls_bag cls_decls_bag
`thenTc` \ env ->
+ --trace "tc3" $
-- Typecheck the instance decls, includes deriving
tcSetEnv env (
--trace "tcInstDecls:" $
mod_name rn_env fixities
) `thenTc` \ (inst_info, deriv_binds, ddump_deriv) ->
+ --trace "tc4" $
buildInstanceEnvs inst_info `thenTc` \ inst_mapper ->
returnTc (inst_mapper, env, inst_info, deriv_binds, ddump_deriv)
) `thenTc` \ (_, env, inst_info, deriv_binds, ddump_deriv) ->
+
+ --trace "tc5" $
tcSetEnv env (
-- Default declarations
-- we silently discard the pragma
tcInterfaceSigs sigs `thenTc` \ sig_ids ->
tcGetEnv `thenNF_Tc` \ env ->
+ --trace "tc6" $
returnTc (env, inst_info, data_binds, deriv_binds, ddump_deriv, defaulting_tys, sig_ids)
)))) `thenTc` \ (env, inst_info, data_binds, deriv_binds, ddump_deriv, defaulting_tys, _) ->
+ --trace "tc7" $
tcSetEnv env ( -- to the end...
tcSetDefaultTys defaulting_tys ( -- ditto
(val_decls `ThenBinds` deriv_binds)
( -- Second pass over instance declarations,
-- to compile the bindings themselves.
+ --trace "tc8" $
tcInstDecls2 inst_info `thenNF_Tc` \ (lie_instdecls, inst_binds) ->
tcClassDecls2 cls_decls_bag `thenNF_Tc` \ (lie_clasdecls, cls_binds) ->
tcGetEnv `thenNF_Tc` \ env ->
`thenTc` \ ((val_binds, (inst_binds, cls_binds, final_env)), lie_alldecls, _) ->
- checkTopLevelIds mod_name final_env `thenTc_`
-
-- Deal with constant or ambiguous InstIds. How could
-- there be ambiguous ones? They can only arise if a
-- top-level decl falls under the monomorphism
-- restriction, and no subsequent decl instantiates its
-- type. (Usually, ambiguous type variables are resolved
-- during the generalisation step.)
+ --trace "tc9" $
tcSimplifyTop lie_alldecls `thenTc` \ const_insts ->
-- Backsubstitution. Monomorphic top-level decls may have
let
localids = getEnv_LocalIds final_env
- tycons = getEnv_TyCons final_env
- classes = getEnv_Classes final_env
+ tycons = getEnv_TyCons final_env
+ classes = getEnv_Classes final_env
- local_tycons = [ tc | tc <- tycons, isLocallyDefined tc && isDataTyCon tc ]
+ local_tycons = filter isLocallyDefined tycons
local_classes = filter isLocallyDefined classes
- exported_ids' = filter isExported (eltsUFM ve2)
- in
-
+ local_vals = [ v | v <- eltsUFM ve2, isLocallyDefined v && isTopLevId v ]
+ -- the isTopLevId is doubtful...
+ in
-- FINISHED AT LAST
returnTc (
(data_binds', cls_binds', inst_binds', val_binds', const_insts'),
-- the next collection is just for mkInterface
- (exported_ids', tycons, classes, inst_info),
-
- (local_tycons, local_classes),
+ (local_vals, local_tycons, local_classes, inst_info),
tycon_specs,
ty_decls_bag = listToBag ty_decls
cls_decls_bag = listToBag cls_decls
inst_decls_bag = listToBag inst_decls
-
-\end{code}
-
-
-%************************************************************************
-%* *
-\subsection{Error checking code}
-%* *
-%************************************************************************
-
-
-checkTopLevelIds checks that Main.main or Main.mainPrimIO has correct type.
-
-\begin{code}
-checkTopLevelIds :: FAST_STRING -> TcEnv s -> TcM s ()
-checkTopLevelIds mod final_env
- | mod /= SLIT("Main")
- = returnTc ()
-
- | otherwise
- = tcSetEnv final_env (
- tcLookupLocalValueByKey mainIdKey `thenNF_Tc` \ maybe_main ->
- tcLookupLocalValueByKey mainPrimIOIdKey `thenNF_Tc` \ maybe_prim ->
- tcLookupTyConByKey iOTyConKey `thenNF_Tc` \ io_tc ->
-
- case (maybe_main, maybe_prim) of
- (Just main, Nothing) -> tcAddErrCtxt mainCtxt $
- unifyTauTy (mkSynTy io_tc [unitTy])
- (idType main)
-
- (Nothing, Just prim) -> tcAddErrCtxt primCtxt $
- unifyTauTy (mkPrimIoTy unitTy)
- (idType prim)
-
- (Just _ , Just _ ) -> failTc mainBothIdErr
- (Nothing, Nothing) -> failTc mainNoneIdErr
- )
-
-mainCtxt sty
- = ppStr "main should have type IO ()"
-
-primCtxt sty
- = ppStr "mainPrimIO should have type PrimIO ()"
-
-mainBothIdErr sty
- = ppStr "module Main contains definitions for both main and mainPrimIO"
-
-mainNoneIdErr sty
- = ppStr "module Main does not contain a definition for main (or mainPrimIO)"
\end{code}
projects / ghc-hetmet.git / blobdiff