Class Array2DHashSet<T>

java.lang.Object

org.graalvm.shadowed.org.antlr.v4.runtime.misc.Array2DHashSet<T>

All Implemented Interfaces:

Iterable<T>, Collection<T>, Set<T>

Direct Known Subclasses:

ATNConfigSet.AbstractConfigHashSet

public class Array2DHashSet<T>
extends Object
implements Set<T>

Set implementation with closed hashing (open addressing).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	Array2DHashSet.SetIterator

Field Summary

Fields

Modifier and Type	Field	Description
protected T[][]	buckets
protected final AbstractEqualityComparator<? super T>	comparator
protected int	currentPrime
static final int	INITAL_BUCKET_CAPACITY
static final int	INITAL_CAPACITY
protected final int	initialBucketCapacity
protected final int	initialCapacity
static final double	LOAD_FACTOR
protected int	n	How many elements in set
protected int	threshold	when to expand

Constructor Summary

Constructors

Constructor	Description
Array2DHashSet()
Array2DHashSet(AbstractEqualityComparator<? super T> comparator)
Array2DHashSet(AbstractEqualityComparator<? super T> comparator, int initialCapacity, int initialBucketCapacity)

Method Summary

Modifier and Type	Method	Description
final boolean	add(T t)
boolean	addAll(Collection<? extends T> c)
protected T	asElementType(Object o)	Return o as an instance of the element type T.
void	clear()
final boolean	contains(Object o)
boolean	containsAll(Collection<?> collection)
boolean	containsFast(T obj)
protected T[]	createBucket(int capacity)	Return an array of T with length capacity.
protected T[][]	createBuckets(int capacity)	Return an array of T[] with length capacity.
boolean	equals(Object o)
protected void	expand()
T	get(T o)
protected final int	getBucket(T o)
final T	getOrAdd(T o)	Add o to set if not there; return existing value if already there.
protected T	getOrAddImpl(T o)
int	hashCode()
final boolean	isEmpty()
Iterator<T>	iterator()
final boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	removeFast(T obj)
boolean	retainAll(Collection<?> c)
final int	size()
T[]	toArray()
<U> U[]	toArray(U[] a)
String	toString()
String	toTableString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

spliterator

Field Details

INITAL_CAPACITY

public static final int INITAL_CAPACITY

See Also:

• Constant Field Values

INITAL_BUCKET_CAPACITY

public static final int INITAL_BUCKET_CAPACITY

See Also:

• Constant Field Values

LOAD_FACTOR

public static final double LOAD_FACTOR

See Also:

• Constant Field Values

comparator

protected final AbstractEqualityComparator<? super T> comparator

buckets

protected T[][] buckets

n

protected int n

How many elements in set

currentPrime

protected int currentPrime

threshold

protected int threshold

when to expand

initialCapacity

protected final int initialCapacity

initialBucketCapacity

protected final int initialBucketCapacity

Constructor Details

Array2DHashSet

public Array2DHashSet()

Array2DHashSet

public Array2DHashSet(AbstractEqualityComparator<? super T> comparator)

Array2DHashSet

public Array2DHashSet(AbstractEqualityComparator<? super T> comparator,
 int initialCapacity,
 int initialBucketCapacity)

Method Details

getOrAdd

public final T getOrAdd(T o)

Add o to set if not there; return existing value if already there. This method performs the same operation as add(T) aside from the return value.

getOrAddImpl

protected T getOrAddImpl(T o)

get

public T get(T o)

getBucket

protected final int getBucket(T o)

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<T>

Specified by:

hashCode in interface Set<T>

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<T>

Specified by:

equals in interface Set<T>

Overrides:

equals in class Object

expand

protected void expand()

add

public final boolean add(T t)

Specified by:

add in interface Collection<T>

Specified by:

add in interface Set<T>

size

public final int size()

Specified by:

size in interface Collection<T>

Specified by:

size in interface Set<T>

isEmpty

public final boolean isEmpty()

Specified by:

isEmpty in interface Collection<T>

Specified by:

isEmpty in interface Set<T>

contains

public final boolean contains(Object o)

Specified by:

contains in interface Collection<T>

Specified by:

contains in interface Set<T>

containsFast

public boolean containsFast(T obj)

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in interface Set<T>

toArray

public T[] toArray()

Specified by:

toArray in interface Collection<T>

Specified by:

toArray in interface Set<T>

toArray

public <U> U[] toArray(U[] a)

Specified by:

toArray in interface Collection<T>

Specified by:

toArray in interface Set<T>

remove

public final boolean remove(Object o)

Specified by:

remove in interface Collection<T>

Specified by:

remove in interface Set<T>

removeFast

public boolean removeFast(T obj)

containsAll

public boolean containsAll(Collection<?> collection)

Specified by:

containsAll in interface Collection<T>

Specified by:

containsAll in interface Set<T>

addAll

public boolean addAll(Collection<? extends T> c)

Specified by:

addAll in interface Collection<T>

Specified by:

addAll in interface Set<T>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<T>

Specified by:

retainAll in interface Set<T>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<T>

Specified by:

removeAll in interface Set<T>

clear

public void clear()

Specified by:

clear in interface Collection<T>

Specified by:

clear in interface Set<T>

toString

public String toString()

Overrides:

toString in class Object

toTableString

public String toTableString()

asElementType

protected T asElementType(Object o)

Return o as an instance of the element type T. If o is non-null but known to not be an instance of T, this method returns null. The base implementation does not perform any type checks; override this method to provide strong type checks for the contains(java.lang.Object) and remove(java.lang.Object) methods to ensure the arguments to the EqualityComparator for the set always have the expected types.

Parameters:

o - the object to try and cast to the element type of the set

Returns:

o if it could be an instance of T, otherwise null.

createBuckets

protected T[][] createBuckets(int capacity)

Return an array of T[] with length capacity.

Parameters:

capacity - the length of the array to return

Returns:

the newly constructed array

createBucket

protected T[] createBucket(int capacity)

Return an array of T with length capacity.

Parameters:

capacity - the length of the array to return

Returns:

the newly constructed array