SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package cc.squirreljme.runtime.cldc.util;

import java.util.Enumeration;
import java.util.Iterator;
import java.util.NoSuchElementException;

/**
 * This adapts an iterator to an enumeration.
 *
 * @param <E> The element type.
 * @since 2019/05/05
 */
public final class IteratorToEnumeration<E>
    implements Enumeration<E>
{
    /** The iterator to access. */
    private final Iterator<E> _it;
    
    /**
     * Initializes the iterator adapter.
     *
     * @param __it The iterator to adapt.
     * @throws NullPointerException On null arguments.
     * @since 2019/05/05
     */
    public IteratorToEnumeration(Iterator<E> __it)
        throws NullPointerException
    {
        if (__it == null)
            throw new NullPointerException("NARG");
        
        this._it = __it;
    }
    
    /**
     * {@inheritDoc}
     * @since 2019/05/05
     */
    @Override
    public final boolean hasMoreElements()
    {
        return this._it.hasNext();
    }
    
    /**
     * {@inheritDoc}
     * @since 2019/05/05
     */
    @Override
    public final E nextElement()
        throws NoSuchElementException
    {
        return this._it.next();
    }
}