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/* Generic definitions */
/* Assertions (useful to generate conditional code) */
/* Current type and class (and size, if applicable) */
/* Value methods */
/* Interfaces (keys) */
/* Interfaces (values) */
/* Abstract implementations (keys) */
/* Abstract implementations (values) */
/* Static containers (keys) */
/* Static containers (values) */
/* Implementations */
/* Synchronized wrappers */
/* Unmodifiable wrappers */
/* Other wrappers */
/* Methods (keys) */
/* Methods (values) */
/* Methods (keys/values) */
/* Methods that have special names depending on keys (but the special names depend on values) */
/* Equality */
/* Object/Reference-only definitions (keys) */
/* Primitive-type-only definitions (keys) */
/* Object/Reference-only definitions (values) */
/*
* Copyright (C) 2002-2015 Sebastiano Vigna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package it.unimi.dsi.fastutil.booleans;
import java.util.Collection;
import java.util.Set;
/** A class providing static methods and objects that do useful things with type-specific sets.
*
* @see java.util.Collections */
public class BooleanSets {
private BooleanSets() {}
/** An immutable class representing the empty set and implementing a type-specific set interface.
*
* This class may be useful to implement your own in case you subclass a type-specific set. */
public static class EmptySet extends BooleanCollections.EmptyCollection implements BooleanSet, java.io.Serializable, Cloneable {
private static final long serialVersionUID = -7046029254386353129L;
protected EmptySet() {}
public boolean remove( boolean ok ) {
throw new UnsupportedOperationException();
}
public Object clone() {
return EMPTY_SET;
}
private Object readResolve() {
return EMPTY_SET;
}
}
/** An empty set (immutable). It is serializable and cloneable.
*
*
The class of this objects represent an abstract empty set that is a subset of a (sorted) type-specific set. */
public static final EmptySet EMPTY_SET = new EmptySet();
/** An immutable class representing a type-specific singleton set.
*
*
This class may be useful to implement your own in case you subclass a type-specific set. */
public static class Singleton extends AbstractBooleanSet implements java.io.Serializable, Cloneable {
private static final long serialVersionUID = -7046029254386353129L;
protected final boolean element;
protected Singleton( final boolean element ) {
this.element = element;
}
public boolean add( final boolean k ) {
throw new UnsupportedOperationException();
}
public boolean contains( final boolean k ) {
return ( ( k ) == ( element ) );
}
public boolean addAll( final Collection c ) {
throw new UnsupportedOperationException();
}
public boolean removeAll( final Collection c ) {
throw new UnsupportedOperationException();
}
public boolean retainAll( final Collection c ) {
throw new UnsupportedOperationException();
}
/* Slightly optimized w.r.t. the one in ABSTRACT_SET. */
public boolean[] toBooleanArray() {
boolean a[] = new boolean[ 1 ];
a[ 0 ] = element;
return a;
}
public boolean addAll( final BooleanCollection c ) {
throw new UnsupportedOperationException();
}
public boolean removeAll( final BooleanCollection c ) {
throw new UnsupportedOperationException();
}
public boolean retainAll( final BooleanCollection c ) {
throw new UnsupportedOperationException();
}
public BooleanListIterator iterator() {
return BooleanIterators.singleton( element );
}
public int size() {
return 1;
}
public Object clone() {
return this;
}
}
/** Returns a type-specific immutable set containing only the specified element. The returned set is serializable and cloneable.
*
* @param element the only element of the returned set.
* @return a type-specific immutable set containing just element. */
public static BooleanSet singleton( final boolean element ) {
return new Singleton( element );
}
/** Returns a type-specific immutable set containing only the specified element. The returned set is serializable and cloneable.
*
* @param element the only element of the returned set.
* @return a type-specific immutable set containing just element. */
public static BooleanSet singleton( final Boolean element ) {
return new Singleton( ( ( element ).booleanValue() ) );
}
/** A synchronized wrapper class for sets. */
public static class SynchronizedSet extends BooleanCollections.SynchronizedCollection implements BooleanSet, java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected SynchronizedSet( final BooleanSet s, final Object sync ) {
super( s, sync );
}
protected SynchronizedSet( final BooleanSet s ) {
super( s );
}
public boolean remove( final boolean k ) {
synchronized ( sync ) {
return collection.remove( ( Boolean.valueOf( k ) ) );
}
}
public boolean equals( final Object o ) {
synchronized ( sync ) {
return collection.equals( o );
}
}
public int hashCode() {
synchronized ( sync ) {
return collection.hashCode();
}
}
}
/** Returns a synchronized type-specific set backed by the given type-specific set.
*
* @param s the set to be wrapped in a synchronized set.
* @return a synchronized view of the specified set.
* @see java.util.Collections#synchronizedSet(Set) */
public static BooleanSet synchronize( final BooleanSet s ) {
return new SynchronizedSet( s );
}
/** Returns a synchronized type-specific set backed by the given type-specific set, using an assigned object to synchronize.
*
* @param s the set to be wrapped in a synchronized set.
* @param sync an object that will be used to synchronize the access to the set.
* @return a synchronized view of the specified set.
* @see java.util.Collections#synchronizedSet(Set) */
public static BooleanSet synchronize( final BooleanSet s, final Object sync ) {
return new SynchronizedSet( s, sync );
}
/** An unmodifiable wrapper class for sets. */
public static class UnmodifiableSet extends BooleanCollections.UnmodifiableCollection implements BooleanSet, java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected UnmodifiableSet( final BooleanSet s ) {
super( s );
}
public boolean remove( final boolean k ) {
throw new UnsupportedOperationException();
}
public boolean equals( final Object o ) {
return collection.equals( o );
}
public int hashCode() {
return collection.hashCode();
}
}
/** Returns an unmodifiable type-specific set backed by the given type-specific set.
*
* @param s the set to be wrapped in an unmodifiable set.
* @return an unmodifiable view of the specified set.
* @see java.util.Collections#unmodifiableSet(Set) */
public static BooleanSet unmodifiable( final BooleanSet s ) {
return new UnmodifiableSet( s );
}
}