| /* |
| * Copyright (c) 2015, 2016, 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 com.sun.tools.javac.util; |
| |
| import java.io.IOException; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.nio.file.Path; |
| import java.util.Collection; |
| import java.util.ServiceLoader; |
| |
| /** |
| * This class provides wrappers for classes and methods that are new in JDK 9, and which are not |
| * available on older versions of the platform on which javac may be compiled and run. |
| * In future releases, when javac is always compiled on JDK 9 or later, the use of these wrappers |
| * can be replaced by use of the real underlying classes. |
| * |
| * <p>Wrapper classes provide a subset of the API of the wrapped classes, as needed for use |
| * in javac. Wrapper objects contain an {@code Object} reference to the underlying runtime object, |
| * and {@code Class} and {@code Method} objects for obtaining or using such instances via |
| * runtime reflection. The {@code Class} and {@code Method} objects are set up on a per-class |
| * basis, by an {@code init} method, which is called from static methods on the wrapper class, |
| * or in the constructor, when instances are created. |
| * <p> |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class JDK9Wrappers { |
| |
| /** |
| * Helper class for new method in java.util.ServiceLoader. |
| */ |
| public static final class ServiceLoaderHelper { |
| @SuppressWarnings("unchecked") |
| public static <S> ServiceLoader<S> load(Layer layer, Class<S> service) { |
| try { |
| init(); |
| Object result = loadMethod.invoke(null, layer.theRealLayer, service); |
| return (ServiceLoader<S>)result; |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| // ----------------------------------------------------------------------------------------- |
| |
| private static Method loadMethod = null; |
| |
| private static void init() { |
| if (loadMethod == null) { |
| try { |
| Class<?> layerClass = Layer.layerClass; |
| loadMethod = ServiceLoader.class.getDeclaredMethod("load", layerClass, Class.class); |
| } catch (NoSuchMethodException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Wrapper class for java.lang.module.ModuleDescriptor and ModuleDescriptor.Version. |
| */ |
| public static class ModuleDescriptor { |
| public static class Version { |
| public static final String CLASSNAME = "java.lang.module.ModuleDescriptor$Version"; |
| private final Object theRealVersion; |
| |
| private Version(Object version) { |
| this.theRealVersion = version; |
| } |
| |
| public static Version parse(String v) { |
| try { |
| init(); |
| Object result = parseMethod.invoke(null, v); |
| Version version = new Version(result); |
| return version; |
| } catch (InvocationTargetException ex) { |
| if (ex.getCause() instanceof IllegalArgumentException) { |
| throw (IllegalArgumentException) ex.getCause(); |
| } else { |
| throw new Abort(ex); |
| } |
| } catch (IllegalAccessException | IllegalArgumentException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return theRealVersion.toString(); |
| } |
| |
| // ----------------------------------------------------------------------------------------- |
| |
| private static Class<?> versionClass = null; |
| private static Method parseMethod = null; |
| |
| private static void init() { |
| if (versionClass == null) { |
| try { |
| versionClass = Class.forName(CLASSNAME, false, null); |
| parseMethod = versionClass.getDeclaredMethod("parse", String.class); |
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Wrapper class for java.lang.module.ModuleFinder. |
| */ |
| public static class ModuleFinder { |
| private final Object theRealModuleFinder; |
| |
| private ModuleFinder(Object moduleFinder) { |
| this.theRealModuleFinder = moduleFinder; |
| init(); |
| } |
| |
| public static ModuleFinder of(Path... dirs) { |
| try { |
| init(); |
| Object result = ofMethod.invoke(null, (Object)dirs); |
| ModuleFinder mFinder = new ModuleFinder(result); |
| return mFinder; |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| // ----------------------------------------------------------------------------------------- |
| |
| private static Class<?> moduleFinderClass = null; |
| private static Method ofMethod; |
| |
| static final Class<?> getModuleFinderClass() { |
| init(); |
| return moduleFinderClass; |
| } |
| |
| private static void init() { |
| if (moduleFinderClass == null) { |
| try { |
| moduleFinderClass = Class.forName("java.lang.module.ModuleFinder", false, null); |
| ofMethod = moduleFinderClass.getDeclaredMethod("of", Path[].class); |
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Wrapper class for java.lang.Module. To materialize a handle use the static factory |
| * methods Module#getModule(Class<?>) or Module#getUnnamedModule(ClassLoader). |
| */ |
| public static class Module { |
| |
| private final Object theRealModule; |
| |
| private Module(Object module) { |
| this.theRealModule = module; |
| init(); |
| } |
| |
| public static Module getModule(Class<?> clazz) { |
| try { |
| init(); |
| Object result = getModuleMethod.invoke(clazz, new Object[0]); |
| return new Module(result); |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| public static Module getUnnamedModule(ClassLoader classLoader) { |
| try { |
| init(); |
| Object result = getUnnamedModuleMethod.invoke(classLoader, new Object[0]); |
| return new Module(result); |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| public Module addExports(String pn, Module other) { |
| try { |
| addExportsMethod.invoke(theRealModule, new Object[] { pn, other.theRealModule}); |
| } catch (IllegalAccessException | InvocationTargetException ex) { |
| throw new Abort(ex); |
| } |
| return this; |
| } |
| |
| public Module addUses(Class<?> st) { |
| try { |
| addUsesMethod.invoke(theRealModule, new Object[] { st }); |
| } catch (IllegalAccessException | InvocationTargetException ex) { |
| throw new Abort(ex); |
| } |
| return this; |
| } |
| |
| // ----------------------------------------------------------------------------------------- |
| // on java.lang.Module |
| private static Method addExportsMethod = null; |
| // on java.lang.Module |
| private static Method addUsesMethod = null; |
| // on java.lang.Class |
| private static Method getModuleMethod; |
| // on java.lang.ClassLoader |
| private static Method getUnnamedModuleMethod; |
| |
| private static void init() { |
| if (addExportsMethod == null) { |
| try { |
| Class<?> moduleClass = Class.forName("java.lang.Module", false, null); |
| addUsesMethod = moduleClass.getDeclaredMethod("addUses", new Class<?>[] { Class.class }); |
| addExportsMethod = moduleClass.getDeclaredMethod("addExports", |
| new Class<?>[] { String.class, moduleClass }); |
| getModuleMethod = Class.class.getDeclaredMethod("getModule", new Class<?>[0]); |
| getUnnamedModuleMethod = ClassLoader.class.getDeclaredMethod("getUnnamedModule", new Class<?>[0]); |
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Wrapper class for java.lang.module.Configuration. |
| */ |
| public static final class Configuration { |
| private final Object theRealConfiguration; |
| |
| private Configuration(Object configuration) { |
| this.theRealConfiguration = configuration; |
| init(); |
| } |
| |
| public Configuration resolveAndBind( |
| ModuleFinder beforeFinder, |
| ModuleFinder afterFinder, |
| Collection<String> roots) { |
| try { |
| Object result = resolveAndBindMethod.invoke(theRealConfiguration, |
| beforeFinder.theRealModuleFinder, |
| afterFinder.theRealModuleFinder, |
| roots |
| ); |
| Configuration configuration = new Configuration(result); |
| return configuration; |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| // ----------------------------------------------------------------------------------------- |
| |
| private static Class<?> configurationClass = null; |
| private static Method resolveAndBindMethod; |
| |
| static final Class<?> getConfigurationClass() { |
| init(); |
| return configurationClass; |
| } |
| |
| private static void init() { |
| if (configurationClass == null) { |
| try { |
| configurationClass = Class.forName("java.lang.module.Configuration", false, null); |
| Class<?> moduleFinderInterface = ModuleFinder.getModuleFinderClass(); |
| resolveAndBindMethod = configurationClass.getDeclaredMethod("resolveAndBind", |
| moduleFinderInterface, |
| moduleFinderInterface, |
| Collection.class |
| ); |
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Wrapper class for java.lang.ModuleLayer. |
| */ |
| public static final class Layer { |
| private final Object theRealLayer; |
| |
| private Layer(Object layer) { |
| this.theRealLayer = layer; |
| } |
| |
| public static Layer boot() { |
| try { |
| init(); |
| Object result = bootMethod.invoke(null); |
| Layer layer = new Layer(result); |
| return layer; |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| public Configuration configuration() { |
| try { |
| Object result = configurationMethod.invoke(theRealLayer); |
| Configuration configuration = new Configuration(result); |
| return configuration; |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| public Layer defineModulesWithOneLoader(Configuration configuration, ClassLoader parentClassLoader) { |
| try { |
| Object result = defineModulesWithOneLoaderMethod.invoke( |
| theRealLayer, configuration.theRealConfiguration, parentClassLoader); |
| Layer layer = new Layer(result); |
| return layer; |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| // ----------------------------------------------------------------------------------------- |
| |
| private static Class<?> layerClass = null; |
| private static Method bootMethod; |
| private static Method defineModulesWithOneLoaderMethod; |
| private static Method configurationMethod; |
| |
| private static void init() { |
| if (layerClass == null) { |
| try { |
| layerClass = Class.forName("java.lang.ModuleLayer", false, null); |
| bootMethod = layerClass.getDeclaredMethod("boot"); |
| defineModulesWithOneLoaderMethod = layerClass.getDeclaredMethod("defineModulesWithOneLoader", |
| Configuration.getConfigurationClass(), |
| ClassLoader.class); |
| configurationMethod = layerClass.getDeclaredMethod("configuration"); |
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Helper class for new method in jdk.internal.misc.VM. |
| */ |
| public static final class VMHelper { |
| public static final String CLASSNAME = "jdk.internal.misc.VM"; |
| |
| @SuppressWarnings("unchecked") |
| public static String[] getRuntimeArguments() { |
| try { |
| init(); |
| Object result = getRuntimeArgumentsMethod.invoke(null); |
| return (String[])result; |
| } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException |
| | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| // ----------------------------------------------------------------------------------------- |
| |
| private static Class<?> vmClass = null; |
| private static Method getRuntimeArgumentsMethod = null; |
| |
| private static void init() { |
| if (vmClass == null) { |
| try { |
| vmClass = Class.forName(CLASSNAME, false, null); |
| getRuntimeArgumentsMethod = vmClass.getDeclaredMethod("getRuntimeArguments"); |
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Helper class for new method in jdk.internal.jmod.JmodFile |
| */ |
| public static final class JmodFile { |
| public static final String JMOD_FILE_CLASSNAME = "jdk.internal.jmod.JmodFile"; |
| |
| public static void checkMagic(Path file) throws IOException { |
| try { |
| init(); |
| checkMagicMethod.invoke(null, file); |
| } catch (InvocationTargetException ex) { |
| if (ex.getCause() instanceof IOException) { |
| throw IOException.class.cast(ex.getCause()); |
| } |
| throw new Abort(ex); |
| } catch (IllegalAccessException | IllegalArgumentException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| |
| // ----------------------------------------------------------------------------------------- |
| |
| private static Class<?> jmodFileClass = null; |
| private static Method checkMagicMethod = null; |
| |
| private static void init() { |
| if (jmodFileClass == null) { |
| try { |
| jmodFileClass = Class.forName(JMOD_FILE_CLASSNAME, false, null); |
| checkMagicMethod = jmodFileClass.getDeclaredMethod("checkMagic", Path.class); |
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) { |
| throw new Abort(ex); |
| } |
| } |
| } |
| } |
| } |