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MutableListFactoryImpl.java
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MutableListFactoryImpl.java
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/*
* Copyright (c) 2019 Goldman Sachs and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompany this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package org.eclipse.collections.impl.list.mutable;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.eclipse.collections.api.block.function.Function0;
import org.eclipse.collections.api.factory.list.MutableListFactory;
import org.eclipse.collections.api.list.MutableList;
public class MutableListFactoryImpl implements MutableListFactory
{
public static final MutableListFactory INSTANCE = new MutableListFactoryImpl();
@Override
public <T> MutableList<T> empty()
{
return FastList.newList();
}
@Override
public <T> MutableList<T> with(T... items)
{
return FastList.newListWith(items);
}
@Override
public <T> MutableList<T> withInitialCapacity(int capacity)
{
if (capacity < 0)
{
throw new IllegalArgumentException("initial capacity cannot be less than 0");
}
return FastList.newList(capacity);
}
@Override
public <T> MutableList<T> withAll(Iterable<? extends T> iterable)
{
return FastList.newList(iterable);
}
@Override
public <T> MutableList<T> withNValues(int size, Function0<? extends T> factory)
{
return FastList.newWithNValues(size, factory);
}
@Override
public <T> MutableList<T> fromStream(Stream<? extends T> stream)
{
return stream.collect(Collectors.toCollection(FastList::newList));
}
}