package com.planet_ink.coffee_mud.core.collections;
import java.util.Arrays;
import java.util.Collection;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.NoSuchElementException;
import java.util.Vector;
/*
Copyright 2013-2016 Bo Zimmerman
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.
*/
public class ReadOnlyMultiList<K> implements List<K>
{
private final List<List<K>> lists = new Vector<List<K>>();
public ReadOnlyMultiList(List<K>[] esets)
{
if ((esets == null) || (esets.length == 0))
return;
for (final List<K> I : esets)
lists.add(I);
}
public ReadOnlyMultiList()
{
}
public void addList(List<K> eset)
{
lists.add(eset);
}
@Override
public int size()
{
int size = 0;
for (final List<K> l : lists)
size += l.size();
return size;
}
@Override
public boolean isEmpty()
{
return size() == 0;
}
@Override
public boolean contains(Object o)
{
for (final List<K> l : lists)
if (l.contains(o))
return true;
return false;
}
@Override
public Iterator<K> iterator()
{
return new ReadOnlyIterator<K>(new MultiIterator<K>(lists));
}
@Override
public Object[] toArray()
{
if (lists.size() > 0)
{
final Iterator<List<K>> iter = lists.iterator();
Object[] array = iter.next().toArray();
for (; iter.hasNext();)
{
final List<K> l = iter.next();
if (l.size() > 0)
{
final int oldLen = array.length;
array = Arrays.copyOf(array, oldLen + l.size());
System.arraycopy(l.toArray(), 0, array, oldLen, l.size());
}
}
return array;
}
return new Object[0];
}
@Override
public <T> T[] toArray(T[] a)
{
if (lists.size() > 0)
{
final Iterator<List<K>> iter = lists.iterator();
a = iter.next().toArray(a);
for (; iter.hasNext();)
{
final List<K> l = iter.next();
if (l.size() > 0)
{
final int oldLen = a.length;
a = Arrays.copyOf(a, oldLen + l.size());
System.arraycopy(l.toArray(), 0, a, oldLen, l.size());
}
}
}
return a;
}
@Override
public boolean add(K e)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public boolean remove(Object o)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public boolean containsAll(Collection<?> c)
{
for (final List<K> l : lists)
if (l.containsAll(c))
return true;
return false;
}
@Override
public boolean addAll(Collection<? extends K> c)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public boolean addAll(int index, Collection<? extends K> c)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public boolean removeAll(Collection<?> c)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public boolean retainAll(Collection<?> c)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public void clear()
{
lists.clear();
}
@Override
public K get(int index)
{
for (final List<K> l : lists)
{
if (index < l.size())
return l.get(index);
index -= l.size();
}
throw new java.lang.IndexOutOfBoundsException();
}
@Override
public K set(int index, K element)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public void add(int index, K element)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public K remove(int index)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public int indexOf(Object o)
{
int ct = 0;
for (final List<K> l : lists)
{
final int x = l.indexOf(o);
if (x >= 0)
return ct + x;
ct += x;
}
return -1;
}
@Override
public int lastIndexOf(Object o)
{
int ct = size();
for (int i = lists.size() - 1; i >= 0; i--)
{
final List<K> l = lists.get(i);
ct -= l.size();
final int x = l.lastIndexOf(o);
if (x >= 0)
return ct + x;
}
return -1;
}
@Override
public ListIterator<K> listIterator()
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public ListIterator<K> listIterator(int index)
{
throw new java.lang.UnsupportedOperationException();
}
@Override
public List<K> subList(int fromIndex, int toIndex)
{
throw new java.lang.UnsupportedOperationException();
}
}
