remove empty dir

[ghc-hetmet.git] / ghc / compiler / utils / UniqSet.lhs

diff --git a/ghc/compiler/utils/UniqSet.lhs b/ghc/compiler/utils/UniqSet.lhs
index 67db337..129e333 100644 (file)
--- a/ghc/compiler/utils/UniqSet.lhs
+++ b/ghc/compiler/utils/UniqSet.lhs
@@ -1,5 +1,5 @@
 %
-% (c) The AQUA Project, Glasgow University, 1994-1996
+% (c) The AQUA Project, Glasgow University, 1994-1998
 %
 \section[UniqSet]{Specialised sets, for things with @Uniques@}
 
@@ -8,28 +8,24 @@ Based on @UniqFMs@ (as you would expect).
 Basically, the things need to be in class @Uniquable@.
 
 \begin{code}
-#include "HsVersions.h"
-
 module UniqSet (
-       UniqSet(..),    -- abstract type: NOT
+       UniqSet,    -- abstract type: NOT
 
        mkUniqSet, uniqSetToList, emptyUniqSet, unitUniqSet,
-       addOneToUniqSet,
+       addOneToUniqSet, addListToUniqSet, delOneFromUniqSet, delListFromUniqSet,
        unionUniqSets, unionManyUniqSets, minusUniqSet,
        elementOfUniqSet, mapUniqSet, intersectUniqSets,
-       isEmptyUniqSet
+       isEmptyUniqSet, filterUniqSet, sizeUniqSet, foldUniqSet,
+       elemUniqSet_Directly, lookupUniqSet, hashUniqSet
     ) where
 
-CHK_Ubiq() -- debugging consistency check
+#include "HsVersions.h"
 
-import Maybes          ( maybeToBool, Maybe )
+import {-# SOURCE #-} Name ( Name )
+
+import Maybes          ( maybeToBool )
 import UniqFM
-import Unique          ( Uniquable(..), Unique )
-import Outputable      ( Outputable(..), ExportFlag )
-import SrcLoc          ( SrcLoc )
-import Pretty          ( Pretty(..), PrettyRep )
-import PprStyle                ( PprStyle )
-import Util            ( Ord3(..) )
+import Unique          ( Unique, Uniquable(..) )
 
 #if ! OMIT_NATIVE_CODEGEN
 #define IF_NCG(a) a
@@ -44,7 +40,7 @@ import Util           ( Ord3(..) )
 %*                                                                     *
 %************************************************************************
 
-We use @UniqFM@, with a (@getItsUnique@-able) @Unique@ as ``key''
+We use @UniqFM@, with a (@getUnique@-able) @Unique@ as ``key''
 and the thing itself as the ``value'' (for later retrieval).
 
 \begin{code}
@@ -62,11 +58,23 @@ unitUniqSet x = MkUniqSet (unitUFM x x)
 uniqSetToList :: UniqSet a -> [a]
 uniqSetToList (MkUniqSet set) = eltsUFM set
 
+foldUniqSet :: (a -> b -> b) -> b -> UniqSet a -> b
+foldUniqSet k z (MkUniqSet set) = foldUFM k z set 
+
 mkUniqSet :: Uniquable a => [a]  -> UniqSet a
 mkUniqSet xs = MkUniqSet (listToUFM [ (x, x) | x <- xs])
 
 addOneToUniqSet :: Uniquable a => UniqSet a -> a -> UniqSet a
-addOneToUniqSet set x = set `unionUniqSets` unitUniqSet x
+addOneToUniqSet (MkUniqSet set) x = MkUniqSet (addToUFM set x x)
+
+delOneFromUniqSet :: Uniquable a => UniqSet a -> a -> UniqSet a
+delOneFromUniqSet (MkUniqSet set) x = MkUniqSet (delFromUFM set x)
+
+delListFromUniqSet :: Uniquable a => UniqSet a -> [a] -> UniqSet a
+delListFromUniqSet (MkUniqSet set) xs = MkUniqSet (delListFromUFM set xs)
+
+addListToUniqSet :: Uniquable a => UniqSet a -> [a] -> UniqSet a
+addListToUniqSet (MkUniqSet set) xs = MkUniqSet (addListToUFM set [(x,x) | x<-xs])
 
 unionUniqSets :: UniqSet a -> UniqSet a -> UniqSet a
 unionUniqSets (MkUniqSet set1) (MkUniqSet set2) = MkUniqSet (plusUFM set1 set2)
@@ -80,70 +88,51 @@ unionManyUniqSets (s:ss) = s `unionUniqSets` unionManyUniqSets ss
 minusUniqSet  :: UniqSet a -> UniqSet a -> UniqSet a
 minusUniqSet (MkUniqSet set1) (MkUniqSet set2) = MkUniqSet (minusUFM set1 set2)
 
+filterUniqSet :: (a -> Bool) -> UniqSet a -> UniqSet a
+filterUniqSet pred (MkUniqSet set) = MkUniqSet (filterUFM pred set)
+
 intersectUniqSets :: UniqSet a -> UniqSet a -> UniqSet a
 intersectUniqSets (MkUniqSet set1) (MkUniqSet set2) = MkUniqSet (intersectUFM set1 set2)
 
 elementOfUniqSet :: Uniquable a => a -> UniqSet a -> Bool
 elementOfUniqSet x (MkUniqSet set) = maybeToBool (lookupUFM set x)
 
-isEmptyUniqSet :: UniqSet a -> Bool
-isEmptyUniqSet (MkUniqSet set) = isNullUFM set {-SLOW: sizeUFM set == 0-}
+lookupUniqSet :: Uniquable a => UniqSet a -> a -> Maybe a
+lookupUniqSet (MkUniqSet set) x = lookupUFM set x
 
-mapUniqSet :: Uniquable b => (a -> b) -> UniqSet a -> UniqSet b
-mapUniqSet f (MkUniqSet set)
-  = MkUniqSet (listToUFM [ let
-                            mapped_thing = f thing
-                         in
-                         (mapped_thing, mapped_thing)
-                       | thing <- eltsUFM set ])
-\end{code}
+elemUniqSet_Directly :: Unique -> UniqSet a -> Bool
+elemUniqSet_Directly x (MkUniqSet set) = maybeToBool (lookupUFM_Directly set x)
 
-%************************************************************************
-%*                                                                     *
-\subsection{The @IdSet@ and @TyVarSet@ specialisations for sets of Ids/TyVars}
-%*                                                                     *
-%************************************************************************
+sizeUniqSet :: UniqSet a -> Int
+sizeUniqSet (MkUniqSet set) = sizeUFM set
 
-@IdSet@ is a specialised version, optimised for sets of Ids.
+hashUniqSet :: UniqSet a -> Int
+hashUniqSet (MkUniqSet set) = hashUFM set
 
-\begin{code}
---type NameSet           = UniqSet Name
---type GenTyVarSet flexi = UniqSet (GenTyVar flexi)
---type GenIdSet ty       = UniqSet (GenId ty)
+isEmptyUniqSet :: UniqSet a -> Bool
+isEmptyUniqSet (MkUniqSet set) = isNullUFM set {-SLOW: sizeUFM set == 0-}
 
-#if ! OMIT_NATIVE_CODEGEN
---type RegSet   = UniqSet Reg
-#endif
+mapUniqSet :: (a -> a) -> UniqSet a -> UniqSet a
+  -- VERY IMPORTANT: *assumes* that the function doesn't change the unique
+mapUniqSet f (MkUniqSet set) = MkUniqSet (mapUFM f set)
+\end{code}
 
-#if 0
+\begin{code}
 #if __GLASGOW_HASKELL__
 {-# SPECIALIZE
-    unitUniqSet :: GenId ty       -> GenIdSet ty,
-                       GenTyVar flexi -> GenTyVarSet flexi,
-                       Name  -> NameSet
-    IF_NCG(COMMA       Reg   -> RegSet)
-    #-}
-
-{-# SPECIALIZE
-    mkUniqSet :: [GenId ty]    -> GenIdSet ty,
-                [GenTyVar flexi] -> GenTyVarSet flexi,
-                [Name]  -> NameSet
-    IF_NCG(COMMA [Reg]   -> RegSet)
-    #-}
-
-{-# SPECIALIZE
-    elementOfUniqSet :: GenId ty       -> GenIdSet ty       -> Bool,
-                       GenTyVar flexi -> GenTyVarSet flexi -> Bool,
-                       Name  -> NameSet  -> Bool
-    IF_NCG(COMMA       Reg   -> RegSet   -> Bool)
+    addOneToUniqSet :: UniqSet Unique -> Unique -> UniqSet Unique
     #-}
-
-{-# SPECIALIZE
-    mapUniqSet :: (GenId ty       -> GenId ty)       -> GenIdSet ty        -> GenIdSet ty,
-                 (GenTyVar flexi -> GenTyVar flexi) -> GenTyVarSet flexi -> GenTyVarSet flexi,
-                 (Name  -> Name)  -> NameSet  -> NameSet
-    IF_NCG(COMMA  (Reg  -> Reg)    -> RegSet   -> RegSet)
-    #-}
-#endif
+{- SPECIALIZE
+    elementOfUniqSet :: Name -> UniqSet Name -> Bool
+                     , Unique -> UniqSet Unique -> Bool
+    -}
+{- SPECIALIZE
+    mkUniqSet :: [Name] -> UniqSet Name
+    -}
+
+{- SPECIALIZE
+    unitUniqSet :: Name -> UniqSet Name
+                , Unique -> UniqSet Unique
+    -}
 #endif
 \end{code}