PreSkillTotalParser.java

/*
 * PreSkillTotalParser.java
 *
 * Copyright 2003 (C) Chris Ward <frugal@purplewombat.co.uk>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Created on 18-Dec-2003
 *
 * Current Ver: $Revision$
 *
 *
 *
 */
package plugin.pretokens.parser;

import pcgen.core.prereq.Prerequisite;
import pcgen.persistence.PersistenceLayerException;
import pcgen.persistence.lst.prereq.AbstractPrerequisiteParser;
import pcgen.persistence.lst.prereq.PrerequisiteParserInterface;

/**
 * A prerequisite parser class that handles the parsing of pre skill total tokens.
 *
 */
public class PreSkillTotalParser extends AbstractPrerequisiteParser implements
		PrerequisiteParserInterface
{
	/**
	 * Get the type of prerequisite handled by this token.
	 * @return the type of prerequisite handled by this token.
	 */
    @Override
	public String[] kindsHandled()
	{
		return new String[]{"SKILLTOT"};
	}

	/**
	 * Parse the pre req list
	 *
	 * @param kind The kind of the prerequisite (less the "PRE" prefix)
	 * @param formula The body of the prerequisite.
	 * @param invertResult Whether the prerequisite should invert the result.
	 * @param overrideQualify
	 *           if set true, this prerequisite will be enforced in spite
	 *           of any "QUALIFY" tag that may be present.
	 * @return PreReq
	 * @throws PersistenceLayerException
	 */
	@Override
	public Prerequisite parse(String kind,
	                          String formula,
	                          boolean invertResult,
	                          boolean overrideQualify) throws PersistenceLayerException
	{

		// PRESKILLTOT:Spot,Listen,Search=30
		Prerequisite prereq =
				super.parse(kind, formula, invertResult, overrideQualify);
		int total = 0;

		String[] tokens = formula.split(",");
		for (int i = 0; i < tokens.length; i++)
		{
			String token = tokens[i];
			if (token.indexOf("=") > -1)
			{
				String[] subTokens = token.split("=");
				token = subTokens[0];
				total = Integer.parseInt(subTokens[1]);
			}

			Prerequisite subreq = new Prerequisite();
			subreq.setKind("skill");
			subreq.setKey(token);
			subreq.setTotalValues(true);
			prereq.addPrerequisite(subreq);
		}

		if (invertResult)
		{
			prereq.setOperator(prereq.getOperator().invert());
		}
		prereq.setOperand(Integer.toString(total));
		prereq.setKind(null);
		return prereq;
	}
}