1/* 2 * Copyright (c) 2015, 2017, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24package java.lang; 25 26import java.lang.module.ModuleDescriptor; 27 28/** 29 * A helper class intended to be injected into java.lang using the 30 * java --patch-module option. The helper class provides access to package private 31 * methods in java.lang.Module. 32 */ 33 34public final class ModuleHelper { 35 36 private ModuleHelper() { } 37 38 /** 39 * Creates a named module but without defining the module to the VM. 40 */ 41 public static Module newModule(ClassLoader loader, ModuleDescriptor descriptor) { 42 return new Module(loader, descriptor); 43 } 44 45 /** 46 * Updates module {@code from} to that it reads module {@code to} without 47 * notifying the VM. 48 */ 49 public static void addReadsNoSync(Module from, Module to) { 50 from.implAddReadsNoSync(to); 51 } 52 53 /** 54 * Updates module {@code from} so that it exports package {@code pkg} 55 * to module {@code to} but without notifying the VM. If {@code to} is 56 * {@code null} then the package is exported unconditionally. 57 */ 58 public static void addExportsNoSync(Module from, String pkg, Module to) { 59 if (to == null) { 60 from.implAddExportsNoSync(pkg); 61 } else { 62 from.implAddExportsNoSync(pkg, to); 63 } 64 } 65 66} 67