src.it.unimi.dsi.fastutil.floats.FloatCollections Maven / Gradle / Ivy
/* 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.floats;
import java.util.Collection;
import it.unimi.dsi.fastutil.objects.ObjectArrays;
/** A class providing static methods and objects that do useful things with type-specific collections.
*
* @see java.util.Collections */
public class FloatCollections {
private FloatCollections() {}
/** An immutable class representing an empty type-specific collection.
*
* This class may be useful to implement your own in case you subclass a type-specific collection. */
public abstract static class EmptyCollection extends AbstractFloatCollection {
protected EmptyCollection() {}
public boolean add( float k ) {
throw new UnsupportedOperationException();
}
public boolean contains( float k ) {
return false;
}
public Object[] toArray() {
return ObjectArrays.EMPTY_ARRAY;
}
public float[] toFloatArray( float[] a ) {
return a;
}
public float[] toFloatArray() {
return FloatArrays.EMPTY_ARRAY;
}
public boolean rem( float k ) {
throw new UnsupportedOperationException();
}
public boolean addAll( FloatCollection c ) {
throw new UnsupportedOperationException();
}
public boolean removeAll( FloatCollection c ) {
throw new UnsupportedOperationException();
}
public boolean retainAll( FloatCollection c ) {
throw new UnsupportedOperationException();
}
public boolean containsAll( FloatCollection c ) {
return c.isEmpty();
}
public FloatBidirectionalIterator iterator() {
return FloatIterators.EMPTY_ITERATOR;
}
public int size() {
return 0;
}
public void clear() {}
public int hashCode() {
return 0;
}
public boolean equals( Object o ) {
if ( o == this ) return true;
if ( !( o instanceof Collection ) ) return false;
return ( (Collection>)o ).isEmpty();
}
}
/** A synchronized wrapper class for collections. */
public static class SynchronizedCollection implements FloatCollection, java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final FloatCollection collection;
protected final Object sync;
protected SynchronizedCollection( final FloatCollection c, final Object sync ) {
if ( c == null ) throw new NullPointerException();
this.collection = c;
this.sync = sync;
}
protected SynchronizedCollection( final FloatCollection c ) {
if ( c == null ) throw new NullPointerException();
this.collection = c;
this.sync = this;
}
public int size() {
synchronized ( sync ) {
return collection.size();
}
}
public boolean isEmpty() {
synchronized ( sync ) {
return collection.isEmpty();
}
}
public boolean contains( final float o ) {
synchronized ( sync ) {
return collection.contains( o );
}
}
public float[] toFloatArray() {
synchronized ( sync ) {
return collection.toFloatArray();
}
}
public Object[] toArray() {
synchronized ( sync ) {
return collection.toArray();
}
}
public float[] toFloatArray( final float[] a ) {
synchronized ( sync ) {
return collection.toFloatArray( a );
}
}
public float[] toArray( final float[] a ) {
synchronized ( sync ) {
return collection.toFloatArray( a );
}
}
public boolean addAll( final FloatCollection c ) {
synchronized ( sync ) {
return collection.addAll( c );
}
}
public boolean containsAll( final FloatCollection c ) {
synchronized ( sync ) {
return collection.containsAll( c );
}
}
public boolean removeAll( final FloatCollection c ) {
synchronized ( sync ) {
return collection.removeAll( c );
}
}
public boolean retainAll( final FloatCollection c ) {
synchronized ( sync ) {
return collection.retainAll( c );
}
}
public boolean add( final Float k ) {
synchronized ( sync ) {
return collection.add( k );
}
}
public boolean contains( final Object k ) {
synchronized ( sync ) {
return collection.contains( k );
}
}
public T[] toArray( final T[] a ) {
synchronized ( sync ) {
return collection.toArray( a );
}
}
public FloatIterator iterator() {
return collection.iterator();
}
@Deprecated
public FloatIterator floatIterator() {
return iterator();
}
public boolean add( final float k ) {
synchronized ( sync ) {
return collection.add( k );
}
}
public boolean rem( final float k ) {
synchronized ( sync ) {
return collection.rem( k );
}
}
public boolean remove( final Object ok ) {
synchronized ( sync ) {
return collection.remove( ok );
}
}
public boolean addAll( final Collection extends Float> c ) {
synchronized ( sync ) {
return collection.addAll( c );
}
}
public boolean containsAll( final Collection> c ) {
synchronized ( sync ) {
return collection.containsAll( c );
}
}
public boolean removeAll( final Collection> c ) {
synchronized ( sync ) {
return collection.removeAll( c );
}
}
public boolean retainAll( final Collection> c ) {
synchronized ( sync ) {
return collection.retainAll( c );
}
}
public void clear() {
synchronized ( sync ) {
collection.clear();
}
}
public String toString() {
synchronized ( sync ) {
return collection.toString();
}
}
}
/** Returns a synchronized collection backed by the specified collection.
*
* @param c the collection to be wrapped in a synchronized collection.
* @return a synchronized view of the specified collection.
* @see java.util.Collections#synchronizedCollection(Collection) */
public static FloatCollection synchronize( final FloatCollection c ) {
return new SynchronizedCollection( c );
}
/** Returns a synchronized collection backed by the specified collection, using an assigned object to synchronize.
*
* @param c the collection to be wrapped in a synchronized collection.
* @param sync an object that will be used to synchronize the list access.
* @return a synchronized view of the specified collection.
* @see java.util.Collections#synchronizedCollection(Collection) */
public static FloatCollection synchronize( final FloatCollection c, final Object sync ) {
return new SynchronizedCollection( c, sync );
}
/** An unmodifiable wrapper class for collections. */
public static class UnmodifiableCollection implements FloatCollection, java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final FloatCollection collection;
protected UnmodifiableCollection( final FloatCollection c ) {
if ( c == null ) throw new NullPointerException();
this.collection = c;
}
public int size() {
return collection.size();
}
public boolean isEmpty() {
return collection.isEmpty();
}
public boolean contains( final float o ) {
return collection.contains( o );
}
public FloatIterator iterator() {
return FloatIterators.unmodifiable( collection.iterator() );
}
@Deprecated
public FloatIterator floatIterator() {
return iterator();
}
public boolean add( final float k ) {
throw new UnsupportedOperationException();
}
public boolean remove( final Object ok ) {
throw new UnsupportedOperationException();
}
public boolean addAll( final Collection extends Float> c ) {
throw new UnsupportedOperationException();
}
public boolean containsAll( final Collection> c ) {
return collection.containsAll( c );
}
public boolean removeAll( final Collection> c ) {
throw new UnsupportedOperationException();
}
public boolean retainAll( final Collection> c ) {
throw new UnsupportedOperationException();
}
public void clear() {
throw new UnsupportedOperationException();
}
public String toString() {
return collection.toString();
}
public T[] toArray( final T[] a ) {
return collection.toArray( a );
}
public Object[] toArray() {
return collection.toArray();
}
public float[] toFloatArray() {
return collection.toFloatArray();
}
public float[] toFloatArray( final float[] a ) {
return collection.toFloatArray( a );
}
public float[] toArray( final float[] a ) {
return collection.toArray( a );
}
public boolean rem( final float k ) {
throw new UnsupportedOperationException();
}
public boolean addAll( final FloatCollection c ) {
throw new UnsupportedOperationException();
}
public boolean containsAll( final FloatCollection c ) {
return collection.containsAll( c );
}
public boolean removeAll( final FloatCollection c ) {
throw new UnsupportedOperationException();
}
public boolean retainAll( final FloatCollection c ) {
throw new UnsupportedOperationException();
}
public boolean add( final Float k ) {
throw new UnsupportedOperationException();
}
public boolean contains( final Object k ) {
return collection.contains( k );
}
}
/** Returns an unmodifiable collection backed by the specified collection.
*
* @param c the collection to be wrapped in an unmodifiable collection.
* @return an unmodifiable view of the specified collection.
* @see java.util.Collections#unmodifiableCollection(Collection) */
public static FloatCollection unmodifiable( final FloatCollection c ) {
return new UnmodifiableCollection( c );
}
/** A collection wrapper class for iterables. */
public static class IterableCollection extends AbstractFloatCollection implements java.io.Serializable {
private static final long serialVersionUID = -7046029254386353129L;
protected final FloatIterable iterable;
protected IterableCollection( final FloatIterable iterable ) {
if ( iterable == null ) throw new NullPointerException();
this.iterable = iterable;
}
public int size() {
int c = 0;
final FloatIterator iterator = iterator();
while ( iterator.hasNext() ) {
iterator.next();
c++;
}
return c;
}
public boolean isEmpty() {
return iterable.iterator().hasNext();
}
public FloatIterator iterator() {
return iterable.iterator();
}
@Deprecated
public FloatIterator floatIterator() {
return iterator();
}
}
/** Returns an unmodifiable collection backed by the specified iterable.
*
* @param iterable the iterable object to be wrapped in an unmodifiable collection.
* @return an unmodifiable collection view of the specified iterable. */
public static FloatCollection asCollection( final FloatIterable iterable ) {
if ( iterable instanceof FloatCollection ) return (FloatCollection)iterable;
return new IterableCollection( iterable );
}
}