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. - *
- * - *
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.
- */
-public class JDK9Wrappers {
-
- /**
- * Helper class for new method in java.util.ServiceLoader.
- */
- public static final class ServiceLoaderHelper {
- @SuppressWarnings("unchecked")
- public static ServiceLoader load(Layer layer, Class service) {
- try {
- init();
- Object result = loadMethod.invoke(null, layer.theRealLayer, service);
- return (ServiceLoader)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