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QuintupletonList.java
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QuintupletonList.java
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/*
* Copyright (c) 2018 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.fixed;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.function.UnaryOperator;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.block.procedure.Procedure2;
import org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure;
import org.eclipse.collections.impl.block.factory.Comparators;
/**
* This is a five element memory efficient List which is created by calling Lists.fixedSize.of(one, two, three, four, five).
*/
final class QuintupletonList<T>
extends AbstractMemoryEfficientMutableList<T>
implements Externalizable
{
private static final long serialVersionUID = 1L;
private T element1;
private T element2;
private T element3;
private T element4;
private T element5;
@SuppressWarnings("UnusedDeclaration")
public QuintupletonList()
{
// For Externalizable use only
}
QuintupletonList(T obj1, T obj2, T obj3, T obj4, T obj5)
{
this.element1 = obj1;
this.element2 = obj2;
this.element3 = obj3;
this.element4 = obj4;
this.element5 = obj5;
}
@Override
public SextupletonList<T> with(T value)
{
return new SextupletonList<>(this.element1, this.element2, this.element3, this.element4, this.element5, value);
}
// Weird implementation of clone() is ok on final classes
@Override
public QuintupletonList<T> clone()
{
return new QuintupletonList<>(this.element1, this.element2, this.element3, this.element4, this.element5);
}
@Override
public int size()
{
return 5;
}
@Override
public T get(int index)
{
switch (index)
{
case 0:
return this.element1;
case 1:
return this.element2;
case 2:
return this.element3;
case 3:
return this.element4;
case 4:
return this.element5;
default:
throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + this.size());
}
}
@Override
public boolean contains(Object obj)
{
return Comparators.nullSafeEquals(obj, this.element1)
|| Comparators.nullSafeEquals(obj, this.element2)
|| Comparators.nullSafeEquals(obj, this.element3)
|| Comparators.nullSafeEquals(obj, this.element4)
|| Comparators.nullSafeEquals(obj, this.element5);
}
/**
* set is implemented purely to allow the List to be sorted, not because this List should be considered mutable.
*/
@Override
public T set(int index, T element)
{
switch (index)
{
case 0:
T previousElement1 = this.element1;
this.element1 = element;
return previousElement1;
case 1:
T previousElement2 = this.element2;
this.element2 = element;
return previousElement2;
case 2:
T previousElement3 = this.element3;
this.element3 = element;
return previousElement3;
case 3:
T previousElement4 = this.element4;
this.element4 = element;
return previousElement4;
case 4:
T previousElement5 = this.element5;
this.element5 = element;
return previousElement5;
default:
throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + this.size());
}
}
/**
* @since 10.0 - Overridden for efficiency
*/
@Override
public void replaceAll(UnaryOperator<T> operator)
{
this.element1 = operator.apply(this.element1);
this.element2 = operator.apply(this.element2);
this.element3 = operator.apply(this.element3);
this.element4 = operator.apply(this.element4);
this.element5 = operator.apply(this.element5);
}
@Override
public T getFirst()
{
return this.element1;
}
@Override
public T getLast()
{
return this.element5;
}
@Override
public T getOnly()
{
throw new IllegalStateException("Size must be 1 but was " + this.size());
}
@Override
public void each(Procedure<? super T> procedure)
{
procedure.value(this.element1);
procedure.value(this.element2);
procedure.value(this.element3);
procedure.value(this.element4);
procedure.value(this.element5);
}
@Override
public void forEachWithIndex(ObjectIntProcedure<? super T> objectIntProcedure)
{
objectIntProcedure.value(this.element1, 0);
objectIntProcedure.value(this.element2, 1);
objectIntProcedure.value(this.element3, 2);
objectIntProcedure.value(this.element4, 3);
objectIntProcedure.value(this.element5, 4);
}
@Override
public <P> void forEachWith(Procedure2<? super T, ? super P> procedure, P parameter)
{
procedure.value(this.element1, parameter);
procedure.value(this.element2, parameter);
procedure.value(this.element3, parameter);
procedure.value(this.element4, parameter);
procedure.value(this.element5, parameter);
}
@Override
public void writeExternal(ObjectOutput out) throws IOException
{
out.writeObject(this.element1);
out.writeObject(this.element2);
out.writeObject(this.element3);
out.writeObject(this.element4);
out.writeObject(this.element5);
}
@Override
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
{
this.element1 = (T) in.readObject();
this.element2 = (T) in.readObject();
this.element3 = (T) in.readObject();
this.element4 = (T) in.readObject();
this.element5 = (T) in.readObject();
}
}