Package com.ibm.wala.util.intset

Class EmptyIntSet

java.lang.Object

com.ibm.wala.util.intset.EmptyIntSet

All Implemented Interfaces:

IntSet, Serializable

public class EmptyIntSet
extends Object
implements IntSet

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static EmptyIntSet	instance

Constructor Summary

Constructors

Constructor	Description
EmptyIntSet()

Method Summary

Modifier and Type	Method	Description
boolean	contains(int i)
boolean	containsAny(IntSet set)
void	foreach(IntSetAction action)	Invoke an action on each element of the Set
void	foreachExcluding(IntSet X, IntSetAction action)	Invoke an action on each element of the Set, excluding elements of Set X
IntSet	intersection(IntSet that)	This implementation must not despoil the original value of "this"
IntIterator	intIterator()
boolean	isEmpty()
boolean	isSubset(IntSet that)
int	max()
boolean	sameValue(IntSet that)
int	size()
IntSet	union(IntSet that)	This implementation must not despoil the original value of "this"

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

instance

public static EmptyIntSet instance

Constructor Details

EmptyIntSet

public EmptyIntSet()

Method Details

contains

public boolean contains(int i)

Specified by:

contains in interface IntSet

Returns:

true iff this set contains integer i

containsAny

public boolean containsAny(IntSet set)

Specified by:

containsAny in interface IntSet

Returns:

true iff this set contains integer i

intersection

public IntSet intersection(IntSet that)

Description copied from interface: IntSet

This implementation must not despoil the original value of "this"

Specified by:

intersection in interface IntSet

Returns:

a new IntSet which is the intersection of this and that

union

public IntSet union(IntSet that)

Description copied from interface: IntSet

This implementation must not despoil the original value of "this"

Specified by:

union in interface IntSet

Returns:

a new IntSet containing all elements of this and that

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface IntSet

Returns:

true iff this set is empty

size

public int size()

Specified by:

size in interface IntSet

Returns:

the number of elements in this set

intIterator

public IntIterator intIterator()

Specified by:

intIterator in interface IntSet

Returns:

a perhaps more efficient iterator

foreach

public void foreach(IntSetAction action)

Description copied from interface: IntSet

Invoke an action on each element of the Set

Specified by:

foreach in interface IntSet

foreachExcluding

public void foreachExcluding(IntSet X,
 IntSetAction action)

Description copied from interface: IntSet

Invoke an action on each element of the Set, excluding elements of Set X

Specified by:

foreachExcluding in interface IntSet

max

public int max()

Specified by:

max in interface IntSet

Returns:

maximum integer in this set.

sameValue

public boolean sameValue(IntSet that)

Specified by:

sameValue in interface IntSet

Returns:

true iff this has the same value as that.

isSubset

public boolean isSubset(IntSet that)

Specified by:

isSubset in interface IntSet

Returns:

true iff this is a subset of that.