| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.internal.module; |
| |
| import java.lang.module.ModuleDescriptor; |
| import java.lang.reflect.Module; |
| import java.net.URI; |
| import java.util.Set; |
| |
| import jdk.internal.loader.BootLoader; |
| import jdk.internal.loader.ClassLoaders; |
| import jdk.internal.misc.JavaLangReflectModuleAccess; |
| import jdk.internal.misc.SharedSecrets; |
| |
| |
| /** |
| * A helper class to allow JDK classes create dynamic modules and to update |
| * modules, exports and the readability graph. It is also invoked by the VM |
| * to add read edges when agents are instrumenting code that need to link |
| * to supporting classes. |
| * |
| * The parameters that are package names in this API are the fully-qualified |
| * names of the packages as defined in section 6.5.3 of <cite>The Java™ |
| * Language Specification </cite>, for example, {@code "java.lang"}. |
| */ |
| |
| public class Modules { |
| private Modules() { } |
| |
| private static final JavaLangReflectModuleAccess JLRMA |
| = SharedSecrets.getJavaLangReflectModuleAccess(); |
| |
| |
| /** |
| * Creates a new Module. The module has the given ModuleDescriptor and |
| * is defined to the given class loader. |
| * |
| * The resulting Module is in a larva state in that it does not not read |
| * any other module and does not have any exports. |
| * |
| * The URI is for information purposes only. |
| */ |
| public static Module defineModule(ClassLoader loader, |
| ModuleDescriptor descriptor, |
| URI uri) |
| { |
| return JLRMA.defineModule(loader, descriptor, uri); |
| } |
| |
| /** |
| * Define a new module to the VM. The module has the given set of |
| * concealed packages and is defined to the given class loader. |
| * |
| * The resulting Module is in a larva state in that it does not not read |
| * any other module and does not have any exports. |
| */ |
| public static Module defineModule(ClassLoader loader, |
| String name, |
| Set<String> packages) |
| { |
| ModuleDescriptor descriptor |
| = new ModuleDescriptor.Builder(name).conceals(packages).build(); |
| |
| return JLRMA.defineModule(loader, descriptor, null); |
| } |
| |
| /** |
| * Adds a read-edge so that module {@code m1} reads module {@code m1}. |
| * Same as m1.addReads(m2) but without a caller check. |
| */ |
| public static void addReads(Module m1, Module m2) { |
| JLRMA.addReads(m1, m2); |
| } |
| |
| /** |
| * Updates module m1 to export a package to module m2. |
| * Same as m1.addExports(pkg, m2) but without a caller check. |
| */ |
| public static void addExports(Module m1, String pn, Module m2) { |
| JLRMA.addExports(m1, pn, m2); |
| } |
| |
| /** |
| * Updates a module m to export a package to all modules. |
| */ |
| public static void addExportsToAll(Module m, String pn) { |
| JLRMA.addExportsToAll(m, pn); |
| } |
| |
| /** |
| * Updates module m to export a package to all unnamed modules. |
| */ |
| public static void addExportsToAllUnnamed(Module m, String pn) { |
| JLRMA.addExportsToAllUnnamed(m, pn); |
| } |
| |
| /** |
| * Adds a package to a module's content. |
| * |
| * This method is a no-op if the module already contains the package. |
| */ |
| public static void addPackage(Module m, String pn) { |
| JLRMA.addPackage(m, pn); |
| } |
| |
| /** |
| * Called by the VM when code in the given Module has been transformed by |
| * an agent and so may have been instrumented to call into supporting |
| * classes on the boot class path or application class path. |
| */ |
| public static void transformedByAgent(Module m) { |
| addReads(m, BootLoader.getUnnamedModule()); |
| addReads(m, ClassLoaders.appClassLoader().getUnnamedModule()); |
| } |
| |
| } |