1 /* 2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.nashorn.internal.runtime; 27 28 import java.security.CodeSource; 29 30 /** 31 * Responsible for loading script generated classes. 32 * 33 */ 34 final class ScriptLoader extends NashornLoader { 35 private static final String NASHORN_PKG_PREFIX = "jdk.nashorn.internal."; 36 37 private final Context context; 38 39 /*package-private*/ Context getContext() { 40 return context; 41 } 42 43 /** 44 * Constructor. 45 */ 46 ScriptLoader(final ClassLoader parent, final Context context) { 47 super(parent); 48 this.context = context; 49 } 50 51 @Override 52 protected Class<?> loadClass(final String name, final boolean resolve) throws ClassNotFoundException { 53 checkPackageAccess(name); 54 if (name.startsWith(NASHORN_PKG_PREFIX)) { 55 return context.getSharedLoader().loadClass(name); 56 } 57 return super.loadClass(name, resolve); 58 } 59 60 // package-private and private stuff below this point 61 62 /** 63 * Install a class for use by the Nashorn runtime 64 * 65 * @param name Binary name of class. 66 * @param data Class data bytes. 67 * @param cs CodeSource code source of the class bytes. 68 * 69 * @return Installed class. 70 */ 71 synchronized Class<?> installClass(final String name, final byte[] data, final CodeSource cs) { 72 // null check 73 cs.getClass(); 74 return defineClass(name, data, 0, data.length, cs); 75 } 76 }