%
+% (c) The University of Glasgow 2006
% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
%
-\section[Desugar]{@deSugar@: the main function}
+
+The Desugarer: turning HsSyn into Core.
\begin{code}
module Desugar ( deSugar, deSugarExpr ) where
#include "HsVersions.h"
-import DynFlags ( DynFlag(..), DynFlags(..), dopt, GhcMode(..) )
-import StaticFlags ( opt_SccProfilingOn,
- opt_AutoSccsOnAllToplevs,
- opt_AutoSccsOnExportedToplevs )
-import DriverPhases ( isHsBoot )
-import HscTypes ( ModGuts(..), HscEnv(..),
- Dependencies(..), ForeignStubs(..), TypeEnv, IsBootInterface )
-import HsSyn ( RuleDecl(..), RuleBndr(..), LHsExpr, LRuleDecl )
-import TcRnTypes ( TcGblEnv(..), ImportAvails(..) )
-import MkIface ( mkUsageInfo )
-import Id ( Id, setIdExported, idName )
-import Name ( Name, isExternalName, nameIsLocalOrFrom, nameOccName )
+import DynFlags
+import StaticFlags
+import HscTypes
+import HsSyn
+import TcRnTypes
+import MkIface
+import Id
+import Name
import CoreSyn
-import PprCore ( pprRules, pprCoreExpr )
+import PprCore
import DsMonad
-import DsExpr ( dsLExpr )
-import DsBinds ( dsTopLHsBinds, decomposeRuleLhs, AutoScc(..) )
-import DsForeign ( dsForeigns )
+import DsExpr
+import DsBinds
+import DsForeign
import DsExpr () -- Forces DsExpr to be compiled; DsBinds only
-- depends on DsExpr.hi-boot.
import Module
-import UniqFM ( eltsUFM, delFromUFM )
-import PackageConfig ( thPackageId )
-import RdrName ( GlobalRdrEnv )
+import UniqFM
+import PackageConfig
+import RdrName
import NameSet
import VarSet
-import Rules ( roughTopNames )
-import CoreLint ( showPass, endPass )
-import CoreFVs ( ruleRhsFreeVars, exprsFreeNames )
-import ErrUtils ( doIfSet, dumpIfSet_dyn )
-import ListSetOps ( insertList )
+import Rules
+import CoreLint
+import CoreFVs
+import ErrUtils
+import ListSetOps
import Outputable
-import SrcLoc ( Located(..) )
-import DATA_IOREF ( readIORef )
-import Maybes ( catMaybes )
+import SrcLoc
+import Maybes
import FastString
-import Util ( sortLe )
+import Util
+
+import Data.IORef
\end{code}
%************************************************************************
= do { showPass dflags "Desugar"
-- Desugar the program
- ; let auto_scc = mkAutoScc mod exports
+ ; let export_set = availsToNameSet exports
+ ; let auto_scc = mkAutoScc mod export_set
; mb_res <- case ghcMode dflags of
JustTypecheck -> return (Just ([], [], NoStubs))
{ -- Add export flags to bindings
keep_alive <- readIORef keep_var
- ; let final_prs = addExportFlags ghci_mode exports keep_alive
- all_prs ds_rules
+ ; let final_prs = addExportFlags ghci_mode export_set
+ keep_alive all_prs ds_rules
ds_binds = [Rec final_prs]
-- Notice that we put the whole lot in a big Rec, even the foreign binds
-- When compiling PrelFloat, which defines data Float = F# Float#