NaturalOneValue.java

/*******************************************************************************
 *
 *	Copyright (C) 2008 Fujitsu Services Ltd.
 *
 *	Author: Nick Battle
 *
 *	This file is part of VDMJ.
 *
 *	VDMJ is free software: you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation, either version 3 of the License, or
 *	(at your option) any later version.
 *
 *	VDMJ is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU General Public License for more details.
 *
 *	You should have received a copy of the GNU General Public License
 *	along with VDMJ.  If not, see <http://www.gnu.org/licenses/>.
 *
 ******************************************************************************/

package org.overture.interpreter.values;

import java.util.Set;

import org.overture.ast.analysis.AnalysisException;
import org.overture.ast.messages.InternalException;
import org.overture.ast.types.ANatOneNumericBasicType;
import org.overture.ast.types.PType;
import org.overture.interpreter.runtime.Context;

public class NaturalOneValue extends NaturalValue
{
	private static final long serialVersionUID = 1L;

	public NaturalOneValue(long value) throws Exception
	{
		super(value);

		if (value < 1)
		{
			throw new Exception("Value " + value + " is not a nat1");
		}
	}

	@Override
	public String kind()
	{
		return "nat1";
	}

	@Override
	protected Value convertValueTo(PType to, Context ctxt, Set<PType> done)
			throws AnalysisException
	{
		if (to instanceof ANatOneNumericBasicType)
		{
			return this;
		} else
		{
			return super.convertValueTo(to, ctxt, done);
		}
	}

	@Override
	public Object clone()
	{
		try
		{
			return new NaturalOneValue(longVal);
		} catch (Exception e)
		{
			throw new InternalException(5, "Illegal clone");
		}
	}
}