MatchList.java

/**
 * Warlock, the open-source cross-platform game client
 *  
 * Copyright 2008, Warlock LLC, and individual contributors as indicated
 * by the @authors tag. 
 *
 * This 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 software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package cc.warlock.core.script.javascript;

import java.util.HashMap;
import java.util.concurrent.BlockingQueue;

import org.mozilla.javascript.Function;
import org.mozilla.javascript.Script;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;

import cc.warlock.core.script.IMatch;
import cc.warlock.core.script.internal.RegexMatch;
import cc.warlock.core.script.internal.TextMatch;

public class MatchList extends ScriptableObject {
	
	private static final long serialVersionUID = 2034366988104765649L;
	
	private HashMap<IMatch, Runnable> matches = new HashMap<IMatch, Runnable>();
	private BlockingQueue<String> queue;
	private JavascriptScript script;
	
	public MatchList() {
	}
	
	public void jsConstructor() {
		JavascriptCommands jsCommands = (JavascriptCommands)this.getParentScope().get("script", this.getParentScope());
		script = jsCommands.getScript();
		queue = script.getCommands().createLineQueue();
	}
	
	public void jsFunction_restart() {
		script.checkStop();
		
		if(queue != null)
			script.getCommands().removeLineQueue(queue);
			
		queue = script.getCommands().createLineQueue();
	}
	
	private class JSMatchData implements Runnable {
		
		private Function function;
		private String expression;
		protected Object[] args = new Object[0];
		
		public JSMatchData(Function function, String expression) {
			this.function = function;
			this.expression = expression;
		}
		
		public void run() {
			if(function != null) {
				function.call(script.getContext(), script.getScope(), null, args);
			}
			if(expression != null) {
				Script jsCommand = script.getContext().compileString(expression, "matchWait", 0, null);

				jsCommand.exec(script.getContext(), script.getScope());
			}
		}
	}
	
	public IMatch jsFunction_match(String text, Object f) {
		script.checkStop();
		
		if(queue == null)
			queue = script.getCommands().createLineQueue();
		
		TextMatch match = new TextMatch(text, true);
		Function function = null;
		if (f != null && f instanceof Function)
			function = (Function)f;
		
		matches.put(match, new JSMatchData(function, null));
		
		return match;
	}
	
	private class JSRegexMatchData extends JSMatchData {
		
		private RegexMatch match;
		
		public JSRegexMatchData(RegexMatch match, Function function, String expression) {
			super(function, expression);
			this.match = match;
		}
		
		public void run() {
			Scriptable groups = script.getContext().newArray(script.getScope(), match.groups().size());
			int i = 0;
			for(String str : match.groups()) {
				script.getScope().put(i, groups, str);
				i++;
			}
			
			args = new Object[] { groups };
			super.run();
		}
	}
	
	public IMatch jsFunction_matchRe(String regex, Object f) {
		script.checkStop();
		
		if(queue == null)
			queue = script.getCommands().createLineQueue();
		
		RegexMatch match = new RegexMatch(regex);
		Function function = null;
		if (f != null && f instanceof Function)
			function = (Function)f;
		
		matches.put(match, new JSRegexMatchData(match, function, null));
		
		return match;
	}
	
	public IMatch jsFunction_matchWait() {
		script.checkStop();
		
		try {
			if(queue == null)
				queue = script.getCommands().createLineQueue();
			
			IMatch match = script.getCommands().matchWait(matches.keySet(), queue, 0.0);
		
			if (match != null)
			{
//				script.getCommands().echo("Got a match!");
				matches.get(match).run();
			}

			return match;
		} catch(InterruptedException e) {
			script.checkStop();
			return null;
		} finally {
			queue = null;
		}
	}
	
	@Override
	public String getClassName() {
		return "MatchList";
	}

}