import TcBinds ( tcTopBindsAndThen )
import TcClassDcl ( tcClassDecls2, mkImplicitClassBinds )
import TcDefaults ( tcDefaults )
-import TcEnv ( tcExtendGlobalValEnv,
+import TcEnv ( tcExtendGlobalValEnv, tcLookupGlobal_maybe,
tcEnvTyCons, tcEnvClasses,
- tcSetValueEnv, tcSetInstEnv, initEnv,
- ValueEnv,
+ tcSetEnv, tcSetInstEnv, initEnv
)
import TcRules ( tcRules )
import TcForeign ( tcForeignImports, tcForeignExports )
import Bag ( isEmptyBag )
import ErrUtils ( printErrorsAndWarnings, dumpIfSet )
import Id ( idType, idName, idUnfolding )
-import Module ( pprModuleName, mkThisModule )
+import Module ( pprModuleName, mkThisModule, plusModuleEnv )
import Name ( nameOccName, isLocallyDefined, isGlobalName,
toRdrName, nameEnvElts,
)
-- Convenient type synonyms first:
data TcResults
= TcResults {
+ tc_pcs :: PersistentCompilerState, -- Augmented with imported information,
+ -- (but not stuff from this module)
+ tc_env :: TypeEnv, -- The TypeEnv just for the stuff from this module
tc_binds :: TypecheckedMonoBinds,
- tc_tycons :: [TyCon],
- tc_classes :: [Class],
- tc_insts :: Bag InstInfo, -- Instance declaration information
+ tc_insts :: InstEnv, -- Instances, just for this module
tc_fords :: [TypecheckedForeignDecl], -- Foreign import & exports.
tc_rules :: [TypecheckedRuleDecl], -- Transformation rules
- tc_env :: ValueEnv
}
---------------
typecheckModule
- :: UniqSupply
- -> RnNameSupply
- -> FixityEnv
+ :: PersistentCompilerState
+ -> HomeSymbolTable
-> RenamedHsModule
- -> IO (Maybe TcResults)
+ -> IO (Maybe (PersistentCompilerState, TcResults))
-typecheckModule us rn_name_supply fixity_env mod
- = initTc us initEnv (tcModule rn_name_supply fixity_env mod) >>= \ (maybe_result, warns, errs) ->
+typecheckModule pcs hst mod
+ = do { us <- mkSplitUniqSupply 'a' ;
+
+ env <- initTcEnv global_symbol_table global_inst_env ;
+
+ (maybe_result, warns, errs) <- initTc us env (tcModule (pcsPRS pcs) mod)
- printErrorsAndWarnings errs warns >>
+ printErrorsAndWarnings errs warns ;
- (case maybe_result of
- Nothing -> return ()
- Just results -> dumpIfSet opt_D_dump_types "Type signatures" (dump_sigs results) >>
- dumpIfSet opt_D_dump_tc "Typechecked" (dump_tc results)
- ) >>
+ case maybe_result of {
+ Nothing -> return Nothing ;
+ Just results -> do {
+
+ dumpIfSet opt_D_dump_types "Type signatures" (dump_sigs results) ;
+ dumpIfSet opt_D_dump_tc "Typechecked" (dump_tc results) ;
- return (if isEmptyBag errs then
- maybe_result
- else
- Nothing)
+ if isEmptyBag errs then
+ return Nothing
+ else
+
+ let groups :: FiniteMap Module TypeEnv
+ groups = groupTyThings (nameEnvElts (tc_env results))
+ local_type_env :: TypeEnv
+ local_type_env = lookupWithDefaultFM groups this_mod emptyNameEnv
+
+ new_pst :: PackageSymbolTable
+ new_pst = extendTypeEnv (pcsPST pcs) (delFromFM groups this_mod)
+ ;
+ return (Just (pcs {pcsPST = new_pst},
+ results {tc_env = local_type_env}))
+ }}}
+ where
+ global_symbol_table = pcsPST pcs `plusModuleEnv` hst
+
+ global_inst_env = foldModuleEnv (plusInstEnv . instEnv) (pcsInsts pcs) gst
+ -- For now, make the total instance envt by simply
+ -- folding together all the instances we can find anywhere
\end{code}
The internal monster:
\begin{code}
-tcModule :: RnNameSupply -- for renaming derivings
- -> FixityEnv -- needed for Show/Read derivings.
+tcModule :: PersistentRenamerState
-> RenamedHsModule -- input
-> TcM TcResults -- output
-tcModule rn_name_supply fixities
- (HsModule mod_name _ _ _ decls _ src_loc)
+tcModule prs (HsModule mod_name _ _ _ decls _ src_loc)
= tcAddSrcLoc src_loc $ -- record where we're starting
fixTc (\ ~(unf_env ,_) ->
- -- unf_env is used for type-checking interface pragmas
+ -- (unf_env :: TcEnv) is used for type-checking interface pragmas
-- which is done lazily [ie failure just drops the pragma
-- without having any global-failure effect].
--
- -- unf_env is also used to get the pragam info
+ -- unf_env is also used to get the pragama info
-- for imported dfuns and default methods
-- Type-check the type and class decls
- tcTyAndClassDecls unf_env decls `thenTc` \ env ->
+ tcTyAndClassDecls unf_env decls `thenTc` \ env ->
tcSetEnv env $
-- Typecheck the instance decls, includes deriving
- tcInstDecls1 unf_env decls
- (mkThisModule mod_name)
- fixities rn_name_supply `thenTc` \ (inst_info, deriv_binds) ->
+ tcInstDecls1 prs unf_env decls
+ (mkThisModule mod_name) `thenTc` \ (inst_info, deriv_binds) ->
buildInstanceEnv inst_info `thenNF_Tc` \ inst_env ->
tcExtendGlobalValEnv cls_ids $
-- foreign import declarations next.
- tcForeignImports decls `thenTc` \ (fo_ids, foi_decls) ->
+ tcForeignImports decls `thenTc` \ (fo_ids, foi_decls) ->
tcExtendGlobalValEnv fo_ids $
-- Value declarations next.
(\ is_rec binds1 (binds2, thing) -> (binds1 `AndMonoBinds` binds2, thing))
(get_val_decls decls `ThenBinds` deriv_binds)
( tcGetEnv `thenNF_Tc` \ env ->
- tcGetUnique `thenNF_Tc` \ uniq ->
returnTc ((EmptyMonoBinds, env), emptyLIE)
) `thenTc` \ ((val_binds, final_env), lie_valdecls) ->
tcSetEnv final_env $
foe_binds
in
zonkTopBinds all_binds `thenNF_Tc` \ (all_binds', really_final_env) ->
- tcSetValueEnv really_final_env $
+ tcSetEnv really_final_env $
+ -- zonkTopBinds puts all the top-level Ids into the tcGEnv
+
zonkForeignExports foe_decls `thenNF_Tc` \ foe_decls' ->
zonkRules rules `thenNF_Tc` \ rules' ->
returnTc (really_final_env,
- (TcResults { tc_binds = all_binds',
- tc_tycons = local_tycons,
- tc_classes = local_classes,
+ (TcResults { tc_env = tcGEnv really_final_env,
+ tc_binds = all_binds',
tc_insts = inst_info,
tc_fords = foi_decls ++ foe_decls',
- tc_rules = rules',
- tc_env = really_final_env
+ tc_rules = rules'
}))
-- End of outer fix loop
projects / ghc-hetmet.git / blobdiff