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Openllet management of abstracts functions
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/*
 * Copyright (c) 2002-2007, CWI and INRIA
 *
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the University of California, Berkeley nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package openllet.aterm.pure;

import java.util.List;

import openllet.aterm.AFun;
import openllet.aterm.ATerm;
import openllet.aterm.ATermAppl;
import openllet.aterm.ATermPlaceholder;
import openllet.aterm.ATermReal;
import openllet.aterm.Visitor;
import openllet.shared.hash.HashFunctions;
import openllet.shared.hash.SharedObject;

public class ATermRealImpl extends ATermImpl implements ATermReal
{
	private double _value;

	protected ATermRealImpl(final PureFactory factory, final double value)
	{
		super(factory);

		_value = value;

		setHashCode(HashFunctions.doobs(new Object[] { new Double(value) })); // XXX comment or remove or clone but definitly : do something.
	}

	@Override
	public int getType()
	{
		return ATerm.REAL;
	}

	/**
	 * depricated Use the new constructor instead.
	 *
	 * @param hashCode x
	 * @param annos x
	 * @param value x
	 */
	@Deprecated
	protected void init(final int hashCode, final double value)
	{
		super.init(hashCode);
		_value = value;
	}

	@Override
	public SharedObject duplicate()
	{
		return this;
	}

	@Override
	public boolean equivalent(final SharedObject obj)
	{
		if (obj instanceof ATermReal)
		{
			final ATermReal peer = (ATermReal) obj;
			if (peer.getType() != getType())
				return false;

			return peer.getReal() == _value;
		}

		return false;
	}

	@Override
	protected boolean match(final ATerm pattern, final List