2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1998
4 \section{@VarSet@: Variable sets}
8 VarSet, IdSet, TyVarSet,
9 emptyVarSet, unitVarSet, mkVarSet,
10 extendVarSet, extendVarSet_C,
11 elemVarSet, varSetElems, subVarSet,
12 unionVarSet, unionVarSets,
13 intersectVarSet, intersectsVarSet,
14 isEmptyVarSet, delVarSet, delVarSetByKey,
15 minusVarSet, foldVarSet, filterVarSet,
16 lookupVarSet, mapVarSet, sizeVarSet, seqVarSet
19 #include "HsVersions.h"
21 import Var ( Var, Id, TyVar )
22 import Unique ( Unique )
24 import UniqFM ( delFromUFM_Directly, addToUFM_C )
27 %************************************************************************
29 \subsection{@VarSet@s}
31 %************************************************************************
34 type VarSet = UniqSet Var
35 type IdSet = UniqSet Id
36 type TyVarSet = UniqSet TyVar
39 intersectVarSet :: VarSet -> VarSet -> VarSet
40 intersectsVarSet:: VarSet -> VarSet -> Bool -- True if non-empty intersection
41 unionVarSet :: VarSet -> VarSet -> VarSet
42 unionVarSets :: [VarSet] -> VarSet
43 varSetElems :: VarSet -> [Var]
44 unitVarSet :: Var -> VarSet
45 extendVarSet :: VarSet -> Var -> VarSet
46 elemVarSet :: Var -> VarSet -> Bool
47 delVarSet :: VarSet -> Var -> VarSet
48 minusVarSet :: VarSet -> VarSet -> VarSet
49 isEmptyVarSet :: VarSet -> Bool
50 mkVarSet :: [Var] -> VarSet
51 foldVarSet :: (Var -> a -> a) -> a -> VarSet -> a
52 lookupVarSet :: VarSet -> Var -> Maybe Var
53 -- Returns the set element, which may be
54 -- (==) to the argument, but not the same as
55 mapVarSet :: (Var -> Var) -> VarSet -> VarSet
56 sizeVarSet :: VarSet -> Int
57 filterVarSet :: (Var -> Bool) -> VarSet -> VarSet
58 subVarSet :: VarSet -> VarSet -> Bool
59 extendVarSet_C :: (Var->Var->Var) -> VarSet -> Var -> VarSet
61 delVarSetByKey :: VarSet -> Unique -> VarSet
63 emptyVarSet = emptyUniqSet
64 unitVarSet = unitUniqSet
65 extendVarSet = addOneToUniqSet
66 intersectVarSet = intersectUniqSets
67 intersectsVarSet s1 s2 = not (isEmptyVarSet (s1 `intersectVarSet` s2))
68 unionVarSet = unionUniqSets
69 unionVarSets = unionManyUniqSets
70 varSetElems = uniqSetToList
71 elemVarSet = elementOfUniqSet
72 minusVarSet = minusUniqSet
73 delVarSet = delOneFromUniqSet
74 isEmptyVarSet = isEmptyUniqSet
76 foldVarSet = foldUniqSet
77 lookupVarSet = lookupUniqSet
78 mapVarSet = mapUniqSet
79 sizeVarSet = sizeUniqSet
80 filterVarSet = filterUniqSet
81 extendVarSet_C combine s x = addToUFM_C combine s x x
82 a `subVarSet` b = isEmptyVarSet (a `minusVarSet` b)
83 delVarSetByKey = delFromUFM_Directly -- Can't be bothered to add this to UniqSet
87 seqVarSet :: VarSet -> ()
88 seqVarSet s = sizeVarSet s `seq` ()