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Rhino is an open-source implementation of JavaScript written entirely in Java. It is typically embedded into Java applications to provide scripting to end users.
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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, 1999.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1997-1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Norris Boyd
* Roger Lawrence
* Patrick Beard
* Igor Bukanov
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (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
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.javascript;
/**
* Load generated classes.
*
* @author Norris Boyd
*/
public class DefiningClassLoader extends ClassLoader
implements GeneratedClassLoader
{
public DefiningClassLoader() {
this.parentLoader = getClass().getClassLoader();
}
public DefiningClassLoader(ClassLoader parentLoader) {
this.parentLoader = parentLoader;
}
public Class defineClass(String name, byte[] data) {
// Use our own protection domain for the generated classes.
// TODO: we might want to use a separate protection domain for classes
// compiled from scripts, based on where the script was loaded from.
return super.defineClass(name, data, 0, data.length,
SecurityUtilities.getProtectionDomain(getClass()));
}
public void linkClass(Class cl) {
resolveClass(cl);
}
public Class loadClass(String name, boolean resolve)
throws ClassNotFoundException
{
Class cl = findLoadedClass(name);
if (cl == null) {
if (parentLoader != null) {
cl = parentLoader.loadClass(name);
} else {
cl = findSystemClass(name);
}
}
if (resolve) {
resolveClass(cl);
}
return cl;
}
private final ClassLoader parentLoader;
}