[project @ 2001-03-13 12:50:29 by simonmar]

[ghc-hetmet.git] / ghc / compiler / deSugar / DsMonad.lhs

diff --git a/ghc/compiler/deSugar/DsMonad.lhs b/ghc/compiler/deSugar/DsMonad.lhs
index 056068d..a83a1f4 100644 (file)
--- a/ghc/compiler/deSugar/DsMonad.lhs
+++ b/ghc/compiler/deSugar/DsMonad.lhs
@@ -15,16 +15,17 @@ module DsMonad (
        getSrcLocDs, putSrcLocDs,
        getModuleDs,
        getUniqueDs,
+       getDOptsDs,
        dsLookupGlobalValue,
 
-       ValueEnv,
        dsWarn, 
        DsWarnings,
-       DsMatchContext(..), DsMatchKind(..)
+       DsMatchContext(..)
     ) where
 
 #include "HsVersions.h"
 
+import HsSyn           ( HsMatchContext )
 import Bag             ( emptyBag, snocBag, Bag )
 import ErrUtils        ( WarnMsg )
 import Id              ( mkSysLocal, setIdUnique, Id )
@@ -33,13 +34,13 @@ import Var          ( TyVar, setTyVarUnique )
 import Outputable
 import SrcLoc          ( noSrcLoc, SrcLoc )
 import TcHsSyn         ( TypecheckedPat )
-import TcEnv           ( ValueEnv )
 import Type             ( Type )
 import UniqSupply      ( initUs_, splitUniqSupply, uniqFromSupply, uniqsFromSupply,
                          UniqSM, UniqSupply )
 import Unique          ( Unique )
-import UniqFM          ( lookupWithDefaultUFM_Directly )
 import Util            ( zipWithEqual )
+import Name            ( Name )
+import CmdLineOpts     ( DynFlags )
 
 infixr 9 `thenDs`
 \end{code}
@@ -49,10 +50,11 @@ a @UniqueSupply@ and some annotations, which
 presumably include source-file location information:
 \begin{code}
 type DsM result =
-       UniqSupply
-        -> ValueEnv
-       -> SrcLoc                -- to put in pattern-matching error msgs
-       -> Module                -- module: for SCC profiling
+       DynFlags
+       -> UniqSupply
+        -> (Name -> Id)                -- Lookup well-known Ids
+       -> SrcLoc               -- to put in pattern-matching error msgs
+       -> Module               -- module: for SCC profiling
        -> DsWarnings
        -> (result, DsWarnings)
 
@@ -65,31 +67,32 @@ type DsWarnings = Bag WarnMsg           -- The desugarer reports matches which a
 
 -- initDs returns the UniqSupply out the end (not just the result)
 
-initDs  :: UniqSupply
-       -> ValueEnv
+initDs  :: DynFlags
+       -> UniqSupply
+       -> (Name -> Id)
        -> Module   -- module name: for profiling
        -> DsM a
        -> (a, DsWarnings)
 
-initDs init_us genv mod action
-  = action init_us genv noSrcLoc mod emptyBag
+initDs dflags init_us lookup mod action
+  = action dflags init_us lookup noSrcLoc mod emptyBag
 
 thenDs :: DsM a -> (a -> DsM b) -> DsM b
 andDs  :: (a -> a -> a) -> DsM a -> DsM a -> DsM a
 
-thenDs m1 m2 us genv loc mod warns
+thenDs m1 m2 dflags us genv loc mod warns
   = case splitUniqSupply us                of { (s1, s2) ->
-    case (m1 s1 genv loc mod warns)  of { (result, warns1) ->
-    m2 result s2 genv loc mod warns1}}
+    case (m1 dflags s1 genv loc mod warns)  of { (result, warns1) ->
+    m2 result dflags s2 genv loc mod warns1}}
 
-andDs combiner m1 m2 us genv loc mod warns
+andDs combiner m1 m2 dflags us genv loc mod warns
   = case splitUniqSupply us                of { (s1, s2) ->
-    case (m1 s1 genv loc mod warns)  of { (result1, warns1) ->
-    case (m2 s2 genv loc mod warns1) of { (result2, warns2) ->
+    case (m1 dflags s1 genv loc mod warns)  of { (result1, warns1) ->
+    case (m2 dflags s2 genv loc mod warns1) of { (result2, warns2) ->
     (combiner result1 result2, warns2) }}}
 
 returnDs :: a -> DsM a
-returnDs result us genv loc mod warns = (result, warns)
+returnDs result dflags us genv loc mod warns = (result, warns)
 
 listDs :: [DsM a] -> DsM [a]
 listDs []     = returnDs []
@@ -136,29 +139,33 @@ it easier to read debugging output.
 
 \begin{code}
 newSysLocalDs, newFailLocalDs :: Type -> DsM Id
-newSysLocalDs ty us genv loc mod warns
+newSysLocalDs ty dflags us genv loc mod warns
   = case uniqFromSupply us of { assigned_uniq ->
     (mkSysLocal SLIT("ds") assigned_uniq ty, warns) }
 
 newSysLocalsDs tys = mapDs newSysLocalDs tys
 
-newFailLocalDs ty us genv loc mod warns
+newFailLocalDs ty dflags us genv loc mod warns
   = case uniqFromSupply us of { assigned_uniq ->
     (mkSysLocal SLIT("fail") assigned_uniq ty, warns) }
        -- The UserLocal bit just helps make the code a little clearer
 
 getUniqueDs :: DsM Unique
-getUniqueDs us genv loc mod warns
+getUniqueDs dflags us genv loc mod warns
   = case (uniqFromSupply us) of { assigned_uniq ->
     (assigned_uniq, warns) }
 
+getDOptsDs :: DsM DynFlags
+getDOptsDs dflags us genv loc mod warns
+  = (dflags, warns)
+
 duplicateLocalDs :: Id -> DsM Id
-duplicateLocalDs old_local us genv loc mod warns
+duplicateLocalDs old_local dflags us genv loc mod warns
   = case uniqFromSupply us of { assigned_uniq ->
     (setIdUnique old_local assigned_uniq, warns) }
 
 cloneTyVarsDs :: [TyVar] -> DsM [TyVar]
-cloneTyVarsDs tyvars us genv loc mod warns
+cloneTyVarsDs tyvars dflags us genv loc mod warns
   = case uniqsFromSupply (length tyvars) us of { uniqs ->
     (zipWithEqual "cloneTyVarsDs" setTyVarUnique tyvars uniqs, warns) }
 \end{code}
@@ -166,7 +173,7 @@ cloneTyVarsDs tyvars us genv loc mod warns
 \begin{code}
 newTyVarsDs :: [TyVar] -> DsM [TyVar]
 
-newTyVarsDs tyvar_tmpls us genv loc mod warns
+newTyVarsDs tyvar_tmpls dflags us genv loc mod warns
   = case uniqsFromSupply (length tyvar_tmpls) us of { uniqs ->
     (zipWithEqual "newTyVarsDs" setTyVarUnique tyvar_tmpls uniqs, warns) }
 \end{code}
@@ -176,33 +183,31 @@ the @SrcLoc@ being carried around.
 \begin{code}
 uniqSMtoDsM :: UniqSM a -> DsM a
 
-uniqSMtoDsM u_action us genv loc mod warns
+uniqSMtoDsM u_action dflags us genv loc mod warns
   = (initUs_ us u_action, warns)
 
 getSrcLocDs :: DsM SrcLoc
-getSrcLocDs us genv loc mod warns
+getSrcLocDs dflags us genv loc mod warns
   = (loc, warns)
 
 putSrcLocDs :: SrcLoc -> DsM a -> DsM a
-putSrcLocDs new_loc expr us genv old_loc mod warns
-  = expr us genv new_loc mod warns
+putSrcLocDs new_loc expr dflags us genv old_loc mod warns
+  = expr dflags us genv new_loc mod warns
 
 dsWarn :: WarnMsg -> DsM ()
-dsWarn warn us genv loc mod warns = ((), warns `snocBag` warn)
+dsWarn warn dflags us genv loc mod warns = ((), warns `snocBag` warn)
 
 \end{code}
 
 \begin{code}
 getModuleDs :: DsM Module
-getModuleDs us genv loc mod warns = (mod, warns)
+getModuleDs dflags us genv loc mod warns = (mod, warns)
 \end{code}
 
 \begin{code}
-dsLookupGlobalValue :: Unique -> DsM Id
-dsLookupGlobalValue key us genv loc mod warns
-  = (lookupWithDefaultUFM_Directly genv def key, warns)
-  where
-    def = pprPanic "tcLookupGlobalValue:" (ppr key)
+dsLookupGlobalValue :: Name -> DsM Id
+dsLookupGlobalValue name dflags us genv loc mod warns
+  = (genv name, warns)
 \end{code}
 
 
@@ -214,18 +219,7 @@ dsLookupGlobalValue key us genv loc mod warns
 
 \begin{code}
 data DsMatchContext
-  = DsMatchContext DsMatchKind [TypecheckedPat] SrcLoc
+  = DsMatchContext HsMatchContext [TypecheckedPat] SrcLoc
   | NoMatchContext
   deriving ()
-
-data DsMatchKind
-  = FunMatch Id
-  | CaseMatch
-  | LambdaMatch
-  | PatBindMatch
-  | DoBindMatch
-  | ListCompMatch
-  | LetMatch
-  | RecUpdMatch
-  deriving ()
 \end{code}