gecko-dev/js/rhino/examples/RunScript4.java

/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Rhino code, released
 * May 6, 1998.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1999 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU Public License (the "GPL"), in which case the
 * provisions of the GPL are applicable instead of those above.
 * If you wish to allow use of your version of this file only
 * under the terms of the GPL and not to allow others to use your
 * version of this file under the NPL, indicate your decision by
 * deleting the provisions above and replace them with the notice
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 * the provisions above, a recipient may use your version of this
 * file under either the NPL or the GPL.
 */

import org.mozilla.javascript.*;

/**
 * RunScript4: Execute scripts in an environment that includes the
 *             example Counter class.
 *
 * @author Norris Boyd
 */
public class RunScript4 {
    public static void main(String args[])
        throws Exception
    {
        Context cx = Context.enter();
        try {
            Scriptable scope = cx.initStandardObjects();

            // Use the Counter class to define a Counter constructor
            // and prototype in JavaScript.
            ScriptableObject.defineClass(scope, Counter.class);

            // Create an instance of Counter and assign it to
            // the top-level variable "myCounter". This is
            // equivalent to the JavaScript code
            //    myCounter = new Counter(7);
            Object[] arg = { new Integer(7) };
            Scriptable myCounter = cx.newObject(scope, "Counter", arg);
            scope.put("myCounter", scope, myCounter);

            String s = "";
            for (int i=0; i < args.length; i++) {
                s += args[i];
            }
            Object result = cx.evaluateString(scope, s, "<cmd>", 1, null);
            System.err.println(cx.toString(result));
        } finally {
            Context.exit();
        }
    }

}