net.sourceforge.plantuml.command.regex.RegexComposed Maven / Gradle / Ivy

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/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2012, Arnaud Roques
 *
 * Project Info:  http://plantuml.sourceforge.net
 * 
 * This file is part of PlantUML.
 *
 * PlantUML 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.
 *
 * PlantUML 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * Original Author:  Arnaud Roques
 * 
 * Revision $Revision: 4762 $
 *
 */
package net.sourceforge.plantuml.command.regex;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public abstract class RegexComposed implements IRegex {

	private final List partials;

	abstract protected Pattern getFull();

	public RegexComposed(IRegex... partial) {
		this.partials = Arrays.asList(partial);
		if (partials.size() < 2) {
			throw new IllegalArgumentException();
		}
	}

	public Map createPartialMatch(Iterator it) {
		final Map result = new HashMap();
		for (IRegex r : partials) {
			result.putAll(r.createPartialMatch(it));
		}
		return result;
	}

	final public int count() {
		int cpt = getStartCount();
		for (IRegex r : partials) {
			cpt += r.count();
		}
		return cpt;
	}

	protected int getStartCount() {
		return 0;
	}

	public RegexResult matcher(String s) {
		final Matcher matcher = getFull().matcher(s);
		if (matcher.find() == false) {
			throw new IllegalArgumentException(getClass()+" "+s);
		}

		final Iterator it = new MatcherIterator(matcher);
		return new RegexResult(createPartialMatch(it));
	}

	final public boolean match(String s) {
		return getFull().matcher(s).find();
	}

	final public String getPattern() {
		return getFull().pattern();
	}

	final protected List getPartials() {
		return partials;
	}

}