package com.planet_ink.coffee_mud.core.collections;
import java.util.*;
/*
Copyright 2010-2016 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 ReadOnlyCollection<K> implements Collection<K>
{
private final Collection<K> col;
public ReadOnlyCollection(final Collection<K> c)
{
col=c;
}
@Override
public boolean add(K e)
{
throw new java.lang.IllegalArgumentException();
}
@Override
public boolean addAll(Collection<? extends K> c)
{
throw new java.lang.IllegalArgumentException();
}
@Override
public void clear()
{
throw new java.lang.IllegalArgumentException();
}
@Override
public boolean contains(Object o)
{
return col.contains(o);
}
@Override
public boolean containsAll(Collection<?> c)
{
return col.containsAll(c);
}
@Override
public boolean isEmpty()
{
return col.isEmpty();
}
@Override
public Iterator<K> iterator()
{
return new ReadOnlyIterator<K>(col.iterator());
}
@Override
public boolean remove(Object o)
{
throw new java.lang.IllegalArgumentException();
}
@Override
public boolean removeAll(Collection<?> c)
{
throw new java.lang.IllegalArgumentException();
}
@Override
public boolean retainAll(Collection<?> c)
{
throw new java.lang.IllegalArgumentException();
}
@Override
public int size()
{
return col.size();
}
@Override
public Object[] toArray()
{
return col.toArray();
}
@Override
public <T> T[] toArray(T[] a)
{
return col.toArray(a);
}
}
