%
-% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
+% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
\section[Desugar]{@deSugar@: the main function}
\begin{code}
-#include "HsVersions.h"
-
-module Desugar ( deSugar, pprDsWarnings
-#if __GLASGOW_HASKELL__ < 200
- , DsMatchContext
- , DsWarnFlavour -- fluff needed for closure,
- -- removed when compiling with 1.4
-#endif
- ) where
+module Desugar ( deSugar ) where
-IMP_Ubiq(){-uitous-}
+#include "HsVersions.h"
-import HsSyn ( HsBinds, HsExpr, MonoBinds,
- SYN_IE(RecFlag), nonRecursive, recursive
- )
-import TcHsSyn ( SYN_IE(TypecheckedMonoBinds), SYN_IE(TypecheckedHsExpr)
- )
+import CmdLineOpts ( opt_D_dump_ds )
+import HsSyn ( MonoBinds )
+import TcHsSyn ( TypecheckedMonoBinds, TypecheckedForeignDecl )
import CoreSyn
-import Name ( isExported )
import DsMonad
import DsBinds ( dsMonoBinds )
+import DsForeign ( dsForeigns )
import DsUtils
-
-import Bag ( unionBags )
-import BasicTypes ( SYN_IE(Module) )
-import CmdLineOpts ( opt_DoCoreLinting, opt_SccGroup, opt_SccProfilingOn )
-import CostCentre ( IsCafCC(..), mkAutoCC )
-import CoreLift ( liftCoreBindings )
-import CoreLint ( lintCoreBindings )
-import Id ( nullIdEnv, mkIdEnv, idType,
- SYN_IE(DictVar), GenId, SYN_IE(Id) )
-import Outputable ( PprStyle(..) )
+import DsExpr () -- Forces DsExpr to be compiled; DsBinds only
+ -- depends on DsExpr.hi-boot.
+import Module ( Module, moduleString )
+import Bag ( isEmptyBag, unionBags )
+import CmdLineOpts ( opt_SccGroup, opt_SccProfilingOn )
+import CoreLint ( beginPass, endPass )
+import ErrUtils ( doIfSet, pprBagOfWarnings )
+import Outputable
import UniqSupply ( splitUniqSupply, UniqSupply )
\end{code}
\begin{code}
deSugar :: UniqSupply -- name supply
+ -> ValueEnv -- value env
-> Module -- module name
-> TypecheckedMonoBinds
- -> ([CoreBinding], -- output
- DsWarnings) -- Shadowing complaints
+ -> [TypecheckedForeignDecl]
+ -> IO ([CoreBind], SDoc, SDoc) -- output
+
+deSugar us global_val_env mod_name all_binds fo_decls = do
+ beginPass "Desugar"
+ -- Do desugaring
+ let (core_prs, ds_warns1) = initDs us1 global_val_env module_and_group
+ (dsMonoBinds opt_SccProfilingOn all_binds [])
+ ds_binds' = [Rec core_prs]
+
+ ((fi_binds, fe_binds, h_code, c_code), ds_warns2) =
+ initDs us3 global_val_env module_and_group (dsForeigns mod_name fo_decls)
+
+ ds_binds = fi_binds ++ ds_binds' ++ fe_binds
-deSugar us mod_name all_binds
- = let
- (us1, us2) = splitUniqSupply us
+ ds_warns = ds_warns1 `unionBags` ds_warns2
- module_and_group = (mod_name, grp_name)
- grp_name = case opt_SccGroup of
- Just xx -> _PK_ xx
- Nothing -> mod_name -- default: module name
+ -- Display any warnings
+ doIfSet (not (isEmptyBag ds_warns))
+ (printErrs (pprBagOfWarnings ds_warns))
- (core_prs, shadows) = initDs us1 nullIdEnv module_and_group
- (dsMonoBinds opt_SccProfilingOn recursive all_binds [])
+ -- Lint result if necessary
+ endPass "Desugar" opt_D_dump_ds ds_binds
+ return (ds_binds, h_code, c_code)
+ where
+ (us1, us2) = splitUniqSupply us
+ (us3, us4) = splitUniqSupply us2
- lift_final_binds = liftCoreBindings us2 [Rec core_prs]
+ module_and_group = (mod_name, grp_name)
+ grp_name = case opt_SccGroup of
+ Just xx -> _PK_ xx
+ Nothing -> _PK_ (moduleString mod_name) -- default: module name
- really_final_binds = if opt_DoCoreLinting
- then lintCoreBindings PprDebug "Desugarer" False lift_final_binds
- else lift_final_binds
- in
- (really_final_binds, shadows)
\end{code}