ScriptLoader.java revision 1309:15a67b4f8935
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 26package jdk.nashorn.internal.runtime; 27 28import java.security.CodeSource; 29import java.util.Objects; 30 31/** 32 * Responsible for loading script generated classes. 33 * 34 */ 35final class ScriptLoader extends NashornLoader { 36 private static final String NASHORN_PKG_PREFIX = "jdk.nashorn.internal."; 37 38 private final Context context; 39 40 /*package-private*/ Context getContext() { 41 return context; 42 } 43 44 /** 45 * Constructor. 46 */ 47 ScriptLoader(final ClassLoader parent, final Context context) { 48 super(parent); 49 this.context = context; 50 } 51 52 @Override 53 protected Class<?> loadClass(final String name, final boolean resolve) throws ClassNotFoundException { 54 checkPackageAccess(name); 55 if (name.startsWith(NASHORN_PKG_PREFIX)) { 56 return context.getSharedLoader().loadClass(name); 57 } 58 return super.loadClass(name, resolve); 59 } 60 61 // package-private and private stuff below this point 62 63 /** 64 * Install a class for use by the Nashorn runtime 65 * 66 * @param name Binary name of class. 67 * @param data Class data bytes. 68 * @param cs CodeSource code source of the class bytes. 69 * 70 * @return Installed class. 71 */ 72 synchronized Class<?> installClass(final String name, final byte[] data, final CodeSource cs) { 73 return defineClass(name, data, 0, data.length, Objects.requireNonNull(cs)); 74 } 75} 76