Add2.java

/*
 * JSwiff is an open source Java API for Macromedia Flash file generation
 * and manipulation
 *
 * Copyright (C) 2004-2005 Ralf Terdic (contact@jswiff.com)
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package com.jswiff.swfrecords.actions;

/**
 * <p>
 * This action is used to implement the addition operator according to the
 * ECMAScript specification, i.e. it performs either string concatenation or
 * numeric addition, depending on the data types of the operands.
 * </p>
 * 
 * <p>
 * Performed stack operations:<br>
 * <code>pop b<br> pop a<br> push [a + b]</code>
 * </p>
 * 
 * <p>
 * ActionScript equivalent: the <code>+</code> operator
 * </p>
 * 
 * @since SWF 5
 */
public final class Add2 extends Action implements ActionSign {
	/**
	 * Creates a new Add2 action.
	 */
	public Add2() {
		code = ActionConstants.ADD_2;
	}

	/**
	 * Returns a short description of this action.
	 * 
	 * @return <code>"Add2"</code>
	 */
	public String toString() {
		return "Add2";
	}

	public String getSign() {
		return "+";
	}
}