| /* |
| * Copyright (c) 2014, 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 java.lang.reflect; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.annotation.Annotation; |
| import java.lang.module.Configuration; |
| import java.lang.module.ModuleReference; |
| import java.lang.module.ModuleDescriptor; |
| import java.lang.module.ModuleDescriptor.Exports; |
| import java.lang.module.ModuleDescriptor.Opens; |
| import java.lang.module.ModuleDescriptor.Version; |
| import java.lang.module.ResolvedModule; |
| import java.net.URI; |
| import java.net.URL; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.function.Function; |
| import java.util.stream.Stream; |
| |
| import jdk.internal.loader.BuiltinClassLoader; |
| import jdk.internal.loader.BootLoader; |
| import jdk.internal.loader.ResourceHelper; |
| import jdk.internal.misc.JavaLangAccess; |
| import jdk.internal.misc.JavaLangReflectModuleAccess; |
| import jdk.internal.misc.SharedSecrets; |
| import jdk.internal.module.ServicesCatalog; |
| import jdk.internal.org.objectweb.asm.AnnotationVisitor; |
| import jdk.internal.org.objectweb.asm.Attribute; |
| import jdk.internal.org.objectweb.asm.ClassReader; |
| import jdk.internal.org.objectweb.asm.ClassVisitor; |
| import jdk.internal.org.objectweb.asm.ClassWriter; |
| import jdk.internal.org.objectweb.asm.Opcodes; |
| import jdk.internal.reflect.CallerSensitive; |
| import jdk.internal.reflect.Reflection; |
| import sun.security.util.SecurityConstants; |
| |
| /** |
| * Represents a run-time module, either {@link #isNamed() named} or unnamed. |
| * |
| * <p> Named modules have a {@link #getName() name} and are constructed by the |
| * Java Virtual Machine when a graph of modules is defined to the Java virtual |
| * machine to create a module {@link Layer Layer}. </p> |
| * |
| * <p> An unnamed module does not have a name. There is an unnamed module |
| * per {@link ClassLoader ClassLoader} that is obtained by invoking the class |
| * loader's {@link ClassLoader#getUnnamedModule() getUnnamedModule} method. The |
| * {@link Class#getModule() getModule} method of all types defined by a class |
| * loader that are not in a named module return the class loader's unnamed |
| * module. </p> |
| * |
| * <p> The package names that are parameters or returned by methods defined in |
| * this class 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"}. </p> |
| * |
| * <p> Unless otherwise specified, passing a {@code null} argument to a method |
| * in this class causes a {@link NullPointerException NullPointerException} to |
| * be thrown. </p> |
| * |
| * @since 9 |
| * @see java.lang.Class#getModule |
| */ |
| |
| public final class Module implements AnnotatedElement { |
| |
| // the layer that contains this module, can be null |
| private final Layer layer; |
| |
| // module name and loader, these fields are read by VM |
| private final String name; |
| private final ClassLoader loader; |
| |
| // the module descriptor |
| private final ModuleDescriptor descriptor; |
| |
| |
| /** |
| * Creates a new named Module. The resulting Module will be defined to the |
| * VM but will not read any other modules, will not have any exports setup |
| * and will not be registered in the service catalog. |
| */ |
| private Module(Layer layer, |
| ClassLoader loader, |
| ModuleDescriptor descriptor, |
| URI uri) |
| { |
| this.layer = layer; |
| this.name = descriptor.name(); |
| this.loader = loader; |
| this.descriptor = descriptor; |
| |
| // define module to VM |
| |
| boolean isOpen = descriptor.isOpen(); |
| Version version = descriptor.version().orElse(null); |
| String vs = Objects.toString(version, null); |
| String loc = Objects.toString(uri, null); |
| String[] packages = descriptor.packages().toArray(new String[0]); |
| defineModule0(this, isOpen, vs, loc, packages); |
| } |
| |
| |
| /** |
| * Create the unnamed Module for the given ClassLoader. |
| * |
| * @see ClassLoader#getUnnamedModule |
| */ |
| private Module(ClassLoader loader) { |
| this.layer = null; |
| this.name = null; |
| this.loader = loader; |
| this.descriptor = null; |
| } |
| |
| |
| /** |
| * Creates a named module but without defining the module to the VM. |
| * |
| * @apiNote This constructor is for VM white-box testing. |
| */ |
| Module(ClassLoader loader, ModuleDescriptor descriptor) { |
| this.layer = null; |
| this.name = descriptor.name(); |
| this.loader = loader; |
| this.descriptor = descriptor; |
| } |
| |
| |
| |
| /** |
| * Returns {@code true} if this module is a named module. |
| * |
| * @return {@code true} if this is a named module |
| * |
| * @see ClassLoader#getUnnamedModule() |
| */ |
| public boolean isNamed() { |
| return name != null; |
| } |
| |
| /** |
| * Returns the module name or {@code null} if this module is an unnamed |
| * module. |
| * |
| * @return The module name |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /** |
| * Returns the {@code ClassLoader} for this module. |
| * |
| * <p> If there is a security manager then its {@code checkPermission} |
| * method if first called with a {@code RuntimePermission("getClassLoader")} |
| * permission to check that the caller is allowed to get access to the |
| * class loader. </p> |
| * |
| * @return The class loader for this module |
| * |
| * @throws SecurityException |
| * If denied by the security manager |
| */ |
| public ClassLoader getClassLoader() { |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null) { |
| sm.checkPermission(SecurityConstants.GET_CLASSLOADER_PERMISSION); |
| } |
| return loader; |
| } |
| |
| /** |
| * Returns the module descriptor for this module or {@code null} if this |
| * module is an unnamed module. |
| * |
| * @return The module descriptor for this module |
| */ |
| public ModuleDescriptor getDescriptor() { |
| return descriptor; |
| } |
| |
| /** |
| * Returns the layer that contains this module or {@code null} if this |
| * module is not in a layer. |
| * |
| * A module {@code Layer} contains named modules and therefore this |
| * method always returns {@code null} when invoked on an unnamed module. |
| * |
| * <p> <a href="Proxy.html#dynamicmodule">Dynamic modules</a> are named |
| * modules that are generated at runtime. A dynamic module may or may |
| * not be in a module Layer. </p> |
| * |
| * @return The layer that contains this module |
| * |
| * @see Proxy |
| */ |
| public Layer getLayer() { |
| if (isNamed()) { |
| Layer layer = this.layer; |
| if (layer != null) |
| return layer; |
| |
| // special-case java.base as it is created before the boot Layer |
| if (loader == null && name.equals("java.base")) { |
| return SharedSecrets.getJavaLangAccess().getBootLayer(); |
| } |
| } |
| |
| return null; |
| } |
| |
| |
| // -- |
| |
| // special Module to mean "all unnamed modules" |
| private static final Module ALL_UNNAMED_MODULE = new Module(null); |
| |
| // special Module to mean "everyone" |
| private static final Module EVERYONE_MODULE = new Module(null); |
| |
| // set contains EVERYONE_MODULE, used when a package is opened or |
| // exported unconditionally |
| private static final Set<Module> EVERYONE_SET = Set.of(EVERYONE_MODULE); |
| |
| |
| // -- readability -- |
| |
| // the modules that this module reads |
| private volatile Set<Module> reads; |
| |
| // additional module (2nd key) that some module (1st key) reflectively reads |
| private static final WeakPairMap<Module, Module, Boolean> reflectivelyReads |
| = new WeakPairMap<>(); |
| |
| |
| /** |
| * Indicates if this module reads the given module. This method returns |
| * {@code true} if invoked to test if this module reads itself. It also |
| * returns {@code true} if invoked on an unnamed module (as unnamed |
| * modules read all modules). |
| * |
| * @param other |
| * The other module |
| * |
| * @return {@code true} if this module reads {@code other} |
| * |
| * @see #addReads(Module) |
| */ |
| public boolean canRead(Module other) { |
| Objects.requireNonNull(other); |
| |
| // an unnamed module reads all modules |
| if (!this.isNamed()) |
| return true; |
| |
| // all modules read themselves |
| if (other == this) |
| return true; |
| |
| // check if this module reads other |
| if (other.isNamed()) { |
| Set<Module> reads = this.reads; // volatile read |
| if (reads != null && reads.contains(other)) |
| return true; |
| } |
| |
| // check if this module reads the other module reflectively |
| if (reflectivelyReads.containsKeyPair(this, other)) |
| return true; |
| |
| // if other is an unnamed module then check if this module reads |
| // all unnamed modules |
| if (!other.isNamed() |
| && reflectivelyReads.containsKeyPair(this, ALL_UNNAMED_MODULE)) |
| return true; |
| |
| return false; |
| } |
| |
| /** |
| * If the caller's module is this module then update this module to read |
| * the given module. |
| * |
| * This method is a no-op if {@code other} is this module (all modules read |
| * themselves), this module is an unnamed module (as unnamed modules read |
| * all modules), or this module already reads {@code other}. |
| * |
| * @implNote <em>Read edges</em> added by this method are <em>weak</em> and |
| * do not prevent {@code other} from being GC'ed when this module is |
| * strongly reachable. |
| * |
| * @param other |
| * The other module |
| * |
| * @return this module |
| * |
| * @throws IllegalStateException |
| * If this is a named module and the caller is not this module |
| * |
| * @see #canRead |
| */ |
| @CallerSensitive |
| public Module addReads(Module other) { |
| Objects.requireNonNull(other); |
| if (this.isNamed()) { |
| Module caller = Reflection.getCallerClass().getModule(); |
| if (caller != this) { |
| throw new IllegalStateException(caller + " != " + this); |
| } |
| implAddReads(other, true); |
| } |
| return this; |
| } |
| |
| /** |
| * Updates this module to read another module. |
| * |
| * @apiNote This method is for Proxy use and white-box testing. |
| */ |
| void implAddReads(Module other) { |
| implAddReads(other, true); |
| } |
| |
| /** |
| * Updates this module to read another module without notifying the VM. |
| * |
| * @apiNote This method is for VM white-box testing. |
| */ |
| void implAddReadsNoSync(Module other) { |
| implAddReads(other, false); |
| } |
| |
| /** |
| * Makes the given {@code Module} readable to this module. |
| * |
| * If {@code syncVM} is {@code true} then the VM is notified. |
| */ |
| private void implAddReads(Module other, boolean syncVM) { |
| Objects.requireNonNull(other); |
| |
| // nothing to do |
| if (other == this || !this.isNamed()) |
| return; |
| |
| // check if we already read this module |
| Set<Module> reads = this.reads; |
| if (reads != null && reads.contains(other)) |
| return; |
| |
| // update VM first, just in case it fails |
| if (syncVM) { |
| if (other == ALL_UNNAMED_MODULE) { |
| addReads0(this, null); |
| } else { |
| addReads0(this, other); |
| } |
| } |
| |
| // add reflective read |
| reflectivelyReads.putIfAbsent(this, other, Boolean.TRUE); |
| } |
| |
| |
| // -- exported and open packages -- |
| |
| // the packages are open to other modules, can be null |
| // if the value contains EVERYONE_MODULE then the package is open to all |
| private volatile Map<String, Set<Module>> openPackages; |
| |
| // the packages that are exported, can be null |
| // if the value contains EVERYONE_MODULE then the package is exported to all |
| private volatile Map<String, Set<Module>> exportedPackages; |
| |
| // additional exports or opens added at run-time |
| // this module (1st key), other module (2nd key) |
| // (package name, open?) (value) |
| private static final WeakPairMap<Module, Module, Map<String, Boolean>> |
| reflectivelyExports = new WeakPairMap<>(); |
| |
| |
| /** |
| * Returns {@code true} if this module exports the given package to at |
| * least the given module. |
| * |
| * <p> This method returns {@code true} if invoked to test if a package in |
| * this module is exported to itself. It always returns {@code true} when |
| * invoked on an unnamed module. A package that is {@link #isOpen open} to |
| * the given module is considered exported to that module at run-time and |
| * so this method returns {@code true} if the package is open to the given |
| * module. </p> |
| * |
| * <p> This method does not check if the given module reads this module. </p> |
| * |
| * @param pn |
| * The package name |
| * @param other |
| * The other module |
| * |
| * @return {@code true} if this module exports the package to at least the |
| * given module |
| * |
| * @see ModuleDescriptor#exports() |
| * @see #addExports(String,Module) |
| */ |
| public boolean isExported(String pn, Module other) { |
| Objects.requireNonNull(pn); |
| Objects.requireNonNull(other); |
| return implIsExportedOrOpen(pn, other, /*open*/false); |
| } |
| |
| /** |
| * Returns {@code true} if this module has <em>opened</em> a package to at |
| * least the given module. |
| * |
| * <p> This method returns {@code true} if invoked to test if a package in |
| * this module is open to itself. It returns {@code true} when invoked on an |
| * {@link ModuleDescriptor#isOpen open} module with a package in the module. |
| * It always returns {@code true} when invoked on an unnamed module. </p> |
| * |
| * <p> This method does not check if the given module reads this module. </p> |
| * |
| * @param pn |
| * The package name |
| * @param other |
| * The other module |
| * |
| * @return {@code true} if this module has <em>opened</em> the package |
| * to at least the given module |
| * |
| * @see ModuleDescriptor#opens() |
| * @see #addOpens(String,Module) |
| * @see AccessibleObject#setAccessible(boolean) |
| * @see java.lang.invoke.MethodHandles#privateLookupIn |
| */ |
| public boolean isOpen(String pn, Module other) { |
| Objects.requireNonNull(pn); |
| Objects.requireNonNull(other); |
| return implIsExportedOrOpen(pn, other, /*open*/true); |
| } |
| |
| /** |
| * Returns {@code true} if this module exports the given package |
| * unconditionally. |
| * |
| * <p> This method always returns {@code true} when invoked on an unnamed |
| * module. A package that is {@link #isOpen(String) opened} unconditionally |
| * is considered exported unconditionally at run-time and so this method |
| * returns {@code true} if the package is opened unconditionally. </p> |
| * |
| * <p> This method does not check if the given module reads this module. </p> |
| * |
| * @param pn |
| * The package name |
| * |
| * @return {@code true} if this module exports the package unconditionally |
| * |
| * @see ModuleDescriptor#exports() |
| */ |
| public boolean isExported(String pn) { |
| Objects.requireNonNull(pn); |
| return implIsExportedOrOpen(pn, EVERYONE_MODULE, /*open*/false); |
| } |
| |
| /** |
| * Returns {@code true} if this module has <em>opened</em> a package |
| * unconditionally. |
| * |
| * <p> This method always returns {@code true} when invoked on an unnamed |
| * module. Additionally, it always returns {@code true} when invoked on an |
| * {@link ModuleDescriptor#isOpen open} module with a package in the |
| * module. </p> |
| * |
| * <p> This method does not check if the given module reads this module. </p> |
| * |
| * @param pn |
| * The package name |
| * |
| * @return {@code true} if this module has <em>opened</em> the package |
| * unconditionally |
| * |
| * @see ModuleDescriptor#opens() |
| */ |
| public boolean isOpen(String pn) { |
| Objects.requireNonNull(pn); |
| return implIsExportedOrOpen(pn, EVERYONE_MODULE, /*open*/true); |
| } |
| |
| |
| /** |
| * Returns {@code true} if this module exports or opens the given package |
| * to the given module. If the other module is {@code EVERYONE_MODULE} then |
| * this method tests if the package is exported or opened unconditionally. |
| */ |
| private boolean implIsExportedOrOpen(String pn, Module other, boolean open) { |
| // all packages in unnamed modules are open |
| if (!isNamed()) |
| return true; |
| |
| // all packages are exported/open to self |
| if (other == this && containsPackage(pn)) |
| return true; |
| |
| // all packages in open modules are open |
| if (descriptor.isOpen()) |
| return containsPackage(pn); |
| |
| // exported/opened via module declaration/descriptor |
| if (isStaticallyExportedOrOpen(pn, other, open)) |
| return true; |
| |
| // exported via addExports/addOpens |
| if (isReflectivelyExportedOrOpen(pn, other, open)) |
| return true; |
| |
| // not exported or open to other |
| return false; |
| } |
| |
| /** |
| * Returns {@code true} if this module exports or opens a package to |
| * the given module via its module declaration. |
| */ |
| boolean isStaticallyExportedOrOpen(String pn, Module other, boolean open) { |
| // package is open to everyone or <other> |
| Map<String, Set<Module>> openPackages = this.openPackages; |
| if (openPackages != null) { |
| Set<Module> targets = openPackages.get(pn); |
| if (targets != null) { |
| if (targets.contains(EVERYONE_MODULE)) |
| return true; |
| if (other != EVERYONE_MODULE && targets.contains(other)) |
| return true; |
| } |
| } |
| |
| if (!open) { |
| // package is exported to everyone or <other> |
| Map<String, Set<Module>> exportedPackages = this.exportedPackages; |
| if (exportedPackages != null) { |
| Set<Module> targets = exportedPackages.get(pn); |
| if (targets != null) { |
| if (targets.contains(EVERYONE_MODULE)) |
| return true; |
| if (other != EVERYONE_MODULE && targets.contains(other)) |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| /** |
| * Returns {@code true} if this module reflectively exports or opens given |
| * package package to the given module. |
| */ |
| private boolean isReflectivelyExportedOrOpen(String pn, Module other, boolean open) { |
| // exported or open to all modules |
| Map<String, Boolean> exports = reflectivelyExports.get(this, EVERYONE_MODULE); |
| if (exports != null) { |
| Boolean b = exports.get(pn); |
| if (b != null) { |
| boolean isOpen = b.booleanValue(); |
| if (!open || isOpen) return true; |
| } |
| } |
| |
| if (other != EVERYONE_MODULE) { |
| |
| // exported or open to other |
| exports = reflectivelyExports.get(this, other); |
| if (exports != null) { |
| Boolean b = exports.get(pn); |
| if (b != null) { |
| boolean isOpen = b.booleanValue(); |
| if (!open || isOpen) return true; |
| } |
| } |
| |
| // other is an unnamed module && exported or open to all unnamed |
| if (!other.isNamed()) { |
| exports = reflectivelyExports.get(this, ALL_UNNAMED_MODULE); |
| if (exports != null) { |
| Boolean b = exports.get(pn); |
| if (b != null) { |
| boolean isOpen = b.booleanValue(); |
| if (!open || isOpen) return true; |
| } |
| } |
| } |
| |
| } |
| |
| return false; |
| } |
| |
| |
| /** |
| * If the caller's module is this module then update this module to export |
| * the given package to the given module. |
| * |
| * <p> This method has no effect if the package is already exported (or |
| * <em>open</em>) to the given module. It also has no effect if |
| * invoked on an {@link ModuleDescriptor#isOpen open} module. </p> |
| * |
| * @apiNote As specified in section 5.4.3 of the <cite>The Java™ |
| * Virtual Machine Specification </cite>, if an attempt to resolve a |
| * symbolic reference fails because of a linkage error, then subsequent |
| * attempts to resolve the reference always fail with the same error that |
| * was thrown as a result of the initial resolution attempt. |
| * |
| * @param pn |
| * The package name |
| * @param other |
| * The module |
| * |
| * @return this module |
| * |
| * @throws IllegalArgumentException |
| * If {@code pn} is {@code null}, or this is a named module and the |
| * package {@code pn} is not a package in this module |
| * @throws IllegalStateException |
| * If this is a named module and the caller is not this module |
| * |
| * @jvms 5.4.3 Resolution |
| * @see #isExported(String,Module) |
| */ |
| @CallerSensitive |
| public Module addExports(String pn, Module other) { |
| if (pn == null) |
| throw new IllegalArgumentException("package is null"); |
| Objects.requireNonNull(other); |
| |
| if (isNamed() && !descriptor.isOpen()) { |
| Module caller = Reflection.getCallerClass().getModule(); |
| if (caller != this) { |
| throw new IllegalStateException(caller + " != " + this); |
| } |
| implAddExportsOrOpens(pn, other, /*open*/false, /*syncVM*/true); |
| } |
| |
| return this; |
| } |
| |
| /** |
| * If this module has <em>opened</em> a package to at least the caller |
| * module then update this module to open the package to the given module. |
| * Opening a package with this method allows all types in the package, |
| * and all their members, not just public types and their public members, |
| * to be reflected on by the given module when using APIs that support |
| * private access or a way to bypass or suppress default Java language |
| * access control checks. |
| * |
| * <p> This method has no effect if the package is already <em>open</em> |
| * to the given module. It also has no effect if invoked on an {@link |
| * ModuleDescriptor#isOpen open} module. </p> |
| * |
| * @param pn |
| * The package name |
| * @param other |
| * The module |
| * |
| * @return this module |
| * |
| * @throws IllegalArgumentException |
| * If {@code pn} is {@code null}, or this is a named module and the |
| * package {@code pn} is not a package in this module |
| * @throws IllegalStateException |
| * If this is a named module and this module has not opened the |
| * package to at least the caller |
| * |
| * @see #isOpen(String,Module) |
| * @see AccessibleObject#setAccessible(boolean) |
| * @see java.lang.invoke.MethodHandles#privateLookupIn |
| */ |
| @CallerSensitive |
| public Module addOpens(String pn, Module other) { |
| if (pn == null) |
| throw new IllegalArgumentException("package is null"); |
| Objects.requireNonNull(other); |
| |
| if (isNamed() && !descriptor.isOpen()) { |
| Module caller = Reflection.getCallerClass().getModule(); |
| if (caller != this && !isOpen(pn, caller)) |
| throw new IllegalStateException(pn + " is not open to " + caller); |
| implAddExportsOrOpens(pn, other, /*open*/true, /*syncVM*/true); |
| } |
| |
| return this; |
| } |
| |
| |
| /** |
| * Updates the exports so that package {@code pn} is exported to module |
| * {@code other} but without notifying the VM. |
| * |
| * @apiNote This method is for VM white-box testing. |
| */ |
| void implAddExportsNoSync(String pn, Module other) { |
| if (other == null) |
| other = EVERYONE_MODULE; |
| implAddExportsOrOpens(pn.replace('/', '.'), other, false, false); |
| } |
| |
| /** |
| * Updates the exports so that package {@code pn} is exported to module |
| * {@code other}. |
| * |
| * @apiNote This method is for white-box testing. |
| */ |
| void implAddExports(String pn, Module other) { |
| implAddExportsOrOpens(pn, other, false, true); |
| } |
| |
| /** |
| * Updates the module to open package {@code pn} to module {@code other}. |
| * |
| * @apiNote This method is for white-box tests and jtreg |
| */ |
| void implAddOpens(String pn, Module other) { |
| implAddExportsOrOpens(pn, other, true, true); |
| } |
| |
| /** |
| * Updates a module to export or open a module to another module. |
| * |
| * If {@code syncVM} is {@code true} then the VM is notified. |
| */ |
| private void implAddExportsOrOpens(String pn, |
| Module other, |
| boolean open, |
| boolean syncVM) { |
| Objects.requireNonNull(other); |
| Objects.requireNonNull(pn); |
| |
| // all packages are open in unnamed and open modules |
| if (!isNamed() || descriptor.isOpen()) |
| return; |
| |
| // nothing to do if already exported/open to other |
| if (implIsExportedOrOpen(pn, other, open)) |
| return; |
| |
| // can only export a package in the module |
| if (!containsPackage(pn)) { |
| throw new IllegalArgumentException("package " + pn |
| + " not in contents"); |
| } |
| |
| // update VM first, just in case it fails |
| if (syncVM) { |
| if (other == EVERYONE_MODULE) { |
| addExportsToAll0(this, pn); |
| } else if (other == ALL_UNNAMED_MODULE) { |
| addExportsToAllUnnamed0(this, pn); |
| } else { |
| addExports0(this, pn, other); |
| } |
| } |
| |
| // add package name to reflectivelyExports if absent |
| Map<String, Boolean> map = reflectivelyExports |
| .computeIfAbsent(this, other, |
| (m1, m2) -> new ConcurrentHashMap<>()); |
| |
| if (open) { |
| map.put(pn, Boolean.TRUE); // may need to promote from FALSE to TRUE |
| } else { |
| map.putIfAbsent(pn, Boolean.FALSE); |
| } |
| } |
| |
| |
| // -- services -- |
| |
| // additional service type (2nd key) that some module (1st key) uses |
| private static final WeakPairMap<Module, Class<?>, Boolean> reflectivelyUses |
| = new WeakPairMap<>(); |
| |
| /** |
| * If the caller's module is this module then update this module to add a |
| * service dependence on the given service type. This method is intended |
| * for use by frameworks that invoke {@link java.util.ServiceLoader |
| * ServiceLoader} on behalf of other modules or where the framework is |
| * passed a reference to the service type by other code. This method is |
| * a no-op when invoked on an unnamed module or an automatic module. |
| * |
| * <p> This method does not cause {@link |
| * Configuration#resolveRequiresAndUses resolveRequiresAndUses} to be |
| * re-run. </p> |
| * |
| * @param service |
| * The service type |
| * |
| * @return this module |
| * |
| * @throws IllegalStateException |
| * If this is a named module and the caller is not this module |
| * |
| * @see #canUse(Class) |
| * @see ModuleDescriptor#uses() |
| */ |
| @CallerSensitive |
| public Module addUses(Class<?> service) { |
| Objects.requireNonNull(service); |
| |
| if (isNamed() && !descriptor.isAutomatic()) { |
| Module caller = Reflection.getCallerClass().getModule(); |
| if (caller != this) { |
| throw new IllegalStateException(caller + " != " + this); |
| } |
| implAddUses(service); |
| } |
| |
| return this; |
| } |
| |
| /** |
| * Update this module to add a service dependence on the given service |
| * type. |
| */ |
| void implAddUses(Class<?> service) { |
| if (!canUse(service)) { |
| reflectivelyUses.putIfAbsent(this, service, Boolean.TRUE); |
| } |
| } |
| |
| |
| /** |
| * Indicates if this module has a service dependence on the given service |
| * type. This method always returns {@code true} when invoked on an unnamed |
| * module or an automatic module. |
| * |
| * @param service |
| * The service type |
| * |
| * @return {@code true} if this module uses service type {@code st} |
| * |
| * @see #addUses(Class) |
| */ |
| public boolean canUse(Class<?> service) { |
| Objects.requireNonNull(service); |
| |
| if (!isNamed()) |
| return true; |
| |
| if (descriptor.isAutomatic()) |
| return true; |
| |
| // uses was declared |
| if (descriptor.uses().contains(service.getName())) |
| return true; |
| |
| // uses added via addUses |
| return reflectivelyUses.containsKeyPair(this, service); |
| } |
| |
| |
| |
| // -- packages -- |
| |
| // Additional packages that are added to the module at run-time. |
| // The field is volatile as it may be replaced at run-time |
| private volatile Set<String> extraPackages; |
| |
| private boolean containsPackage(String pn) { |
| if (descriptor.packages().contains(pn)) |
| return true; |
| Set<String> extraPackages = this.extraPackages; |
| if (extraPackages != null && extraPackages.contains(pn)) |
| return true; |
| return false; |
| } |
| |
| |
| /** |
| * Returns an array of the package names of the packages in this module. |
| * |
| * <p> For named modules, the returned array contains an element for each |
| * package in the module. It may contain elements corresponding to packages |
| * added to the module, <a href="Proxy.html#dynamicmodule">dynamic modules</a> |
| * for example, after it was loaded. |
| * |
| * <p> For unnamed modules, this method is the equivalent of invoking the |
| * {@link ClassLoader#getDefinedPackages() getDefinedPackages} method of |
| * this module's class loader and returning the array of package names. </p> |
| * |
| * <p> A package name appears at most once in the returned array. </p> |
| * |
| * @apiNote This method returns an array rather than a {@code Set} for |
| * consistency with other {@code java.lang.reflect} types. |
| * |
| * @return an array of the package names of the packages in this module |
| */ |
| public String[] getPackages() { |
| if (isNamed()) { |
| |
| Set<String> packages = descriptor.packages(); |
| Set<String> extraPackages = this.extraPackages; |
| if (extraPackages == null) { |
| return packages.toArray(new String[0]); |
| } else { |
| return Stream.concat(packages.stream(), |
| extraPackages.stream()) |
| .toArray(String[]::new); |
| } |
| |
| } else { |
| // unnamed module |
| Stream<Package> packages; |
| if (loader == null) { |
| packages = BootLoader.packages(); |
| } else { |
| packages = SharedSecrets.getJavaLangAccess().packages(loader); |
| } |
| return packages.map(Package::getName).toArray(String[]::new); |
| } |
| } |
| |
| /** |
| * Add a package to this module. |
| * |
| * @apiNote This method is for Proxy use. |
| * |
| * @apiNote This is an expensive operation, not expected to be used often. |
| * At this time then it does not validate that the package name is a |
| * valid java identifier. |
| */ |
| void addPackage(String pn) { |
| implAddPackage(pn, true); |
| } |
| |
| /** |
| * Add a package to this module without notifying the VM. |
| * |
| * @apiNote This method is VM white-box testing. |
| */ |
| void implAddPackageNoSync(String pn) { |
| implAddPackage(pn.replace('/', '.'), false); |
| } |
| |
| /** |
| * Add a package to this module. |
| * |
| * If {@code syncVM} is {@code true} then the VM is notified. |
| */ |
| private void implAddPackage(String pn, boolean syncVM) { |
| if (!isNamed()) |
| throw new InternalError("adding package to unnamed module?"); |
| if (descriptor.isOpen()) |
| throw new InternalError("adding package to open module?"); |
| if (pn.isEmpty()) |
| throw new InternalError("adding <unnamed> package to module?"); |
| |
| if (descriptor.packages().contains(pn)) { |
| // already in module |
| return; |
| } |
| |
| Set<String> extraPackages = this.extraPackages; |
| if (extraPackages != null && extraPackages.contains(pn)) { |
| // already added |
| return; |
| } |
| synchronized (this) { |
| // recheck under lock |
| extraPackages = this.extraPackages; |
| if (extraPackages != null) { |
| if (extraPackages.contains(pn)) { |
| // already added |
| return; |
| } |
| |
| // copy the set |
| extraPackages = new HashSet<>(extraPackages); |
| extraPackages.add(pn); |
| } else { |
| extraPackages = Collections.singleton(pn); |
| } |
| |
| // update VM first, just in case it fails |
| if (syncVM) |
| addPackage0(this, pn); |
| |
| // replace with new set |
| this.extraPackages = extraPackages; // volatile write |
| } |
| } |
| |
| |
| // -- creating Module objects -- |
| |
| /** |
| * Defines all module in a configuration to the runtime. |
| * |
| * @return a map of module name to runtime {@code Module} |
| * |
| * @throws IllegalArgumentException |
| * If defining any of the modules to the VM fails |
| */ |
| static Map<String, Module> defineModules(Configuration cf, |
| Function<String, ClassLoader> clf, |
| Layer layer) |
| { |
| Map<String, Module> nameToModule = new HashMap<>(); |
| Map<String, ClassLoader> moduleToLoader = new HashMap<>(); |
| |
| boolean isBootLayer = (Layer.boot() == null); |
| Set<ClassLoader> loaders = new HashSet<>(); |
| |
| // map each module to a class loader |
| for (ResolvedModule resolvedModule : cf.modules()) { |
| String name = resolvedModule.name(); |
| ClassLoader loader = clf.apply(name); |
| if (loader != null) { |
| moduleToLoader.put(name, loader); |
| loaders.add(loader); |
| } else if (!isBootLayer) { |
| throw new IllegalArgumentException("loader can't be 'null'"); |
| } |
| } |
| |
| // define each module in the configuration to the VM |
| for (ResolvedModule resolvedModule : cf.modules()) { |
| ModuleReference mref = resolvedModule.reference(); |
| ModuleDescriptor descriptor = mref.descriptor(); |
| String name = descriptor.name(); |
| URI uri = mref.location().orElse(null); |
| ClassLoader loader = moduleToLoader.get(resolvedModule.name()); |
| Module m; |
| if (loader == null && isBootLayer && name.equals("java.base")) { |
| // java.base is already defined to the VM |
| m = Object.class.getModule(); |
| } else { |
| m = new Module(layer, loader, descriptor, uri); |
| } |
| nameToModule.put(name, m); |
| moduleToLoader.put(name, loader); |
| } |
| |
| // setup readability and exports |
| for (ResolvedModule resolvedModule : cf.modules()) { |
| ModuleReference mref = resolvedModule.reference(); |
| ModuleDescriptor descriptor = mref.descriptor(); |
| |
| String mn = descriptor.name(); |
| Module m = nameToModule.get(mn); |
| assert m != null; |
| |
| // reads |
| Set<Module> reads = new HashSet<>(); |
| for (ResolvedModule other : resolvedModule.reads()) { |
| Module m2 = null; |
| if (other.configuration() == cf) { |
| String dn = other.reference().descriptor().name(); |
| m2 = nameToModule.get(dn); |
| } else { |
| for (Layer parent: layer.parents()) { |
| m2 = findModule(parent, other); |
| if (m2 != null) |
| break; |
| } |
| } |
| assert m2 != null; |
| |
| reads.add(m2); |
| |
| // update VM view |
| addReads0(m, m2); |
| } |
| m.reads = reads; |
| |
| // automatic modules read all unnamed modules |
| if (descriptor.isAutomatic()) { |
| m.implAddReads(ALL_UNNAMED_MODULE, true); |
| } |
| |
| // exports and opens |
| initExportsAndOpens(descriptor, nameToModule, m); |
| } |
| |
| // register the modules in the boot layer |
| if (isBootLayer) { |
| for (ResolvedModule resolvedModule : cf.modules()) { |
| ModuleReference mref = resolvedModule.reference(); |
| ModuleDescriptor descriptor = mref.descriptor(); |
| if (!descriptor.provides().isEmpty()) { |
| String name = descriptor.name(); |
| Module m = nameToModule.get(name); |
| ClassLoader loader = moduleToLoader.get(name); |
| ServicesCatalog catalog; |
| if (loader == null) { |
| catalog = BootLoader.getServicesCatalog(); |
| } else { |
| catalog = ServicesCatalog.getServicesCatalog(loader); |
| } |
| catalog.register(m); |
| } |
| } |
| } |
| |
| // record that there is a layer with modules defined to the class loader |
| for (ClassLoader loader : loaders) { |
| layer.bindToLoader(loader); |
| } |
| |
| return nameToModule; |
| } |
| |
| |
| /** |
| * Find the runtime Module corresponding to the given ResolvedModule |
| * in the given parent layer (or its parents). |
| */ |
| private static Module findModule(Layer parent, ResolvedModule resolvedModule) { |
| Configuration cf = resolvedModule.configuration(); |
| String dn = resolvedModule.name(); |
| return parent.layers() |
| .filter(l -> l.configuration() == cf) |
| .findAny() |
| .map(layer -> { |
| Optional<Module> om = layer.findModule(dn); |
| assert om.isPresent() : dn + " not found in layer"; |
| Module m = om.get(); |
| assert m.getLayer() == layer : m + " not in expected layer"; |
| return m; |
| }) |
| .orElse(null); |
| } |
| |
| /** |
| * Initialize the maps of exported and open packages for module m. |
| */ |
| private static void initExportsAndOpens(ModuleDescriptor descriptor, |
| Map<String, Module> nameToModule, |
| Module m) |
| { |
| // The VM doesn't know about open modules so need to export all packages |
| if (descriptor.isOpen()) { |
| assert descriptor.opens().isEmpty(); |
| for (String source : descriptor.packages()) { |
| addExportsToAll0(m, source); |
| } |
| return; |
| } |
| |
| Map<String, Set<Module>> openPackages = new HashMap<>(); |
| Map<String, Set<Module>> exportedPackages = new HashMap<>(); |
| |
| // process the open packages first |
| for (Opens opens : descriptor.opens()) { |
| String source = opens.source(); |
| |
| if (opens.isQualified()) { |
| // qualified opens |
| Set<Module> targets = new HashSet<>(); |
| for (String target : opens.targets()) { |
| // only open to modules that are in this configuration |
| Module m2 = nameToModule.get(target); |
| if (m2 != null) { |
| addExports0(m, source, m2); |
| targets.add(m2); |
| } |
| } |
| if (!targets.isEmpty()) { |
| openPackages.put(source, targets); |
| } |
| } else { |
| // unqualified opens |
| addExportsToAll0(m, source); |
| openPackages.put(source, EVERYONE_SET); |
| } |
| } |
| |
| // next the exports, skipping exports when the package is open |
| for (Exports exports : descriptor.exports()) { |
| String source = exports.source(); |
| |
| // skip export if package is already open to everyone |
| Set<Module> openToTargets = openPackages.get(source); |
| if (openToTargets != null && openToTargets.contains(EVERYONE_MODULE)) |
| continue; |
| |
| if (exports.isQualified()) { |
| // qualified exports |
| Set<Module> targets = new HashSet<>(); |
| for (String target : exports.targets()) { |
| // only export to modules that are in this configuration |
| Module m2 = nameToModule.get(target); |
| if (m2 != null) { |
| // skip qualified export if already open to m2 |
| if (openToTargets == null || !openToTargets.contains(m2)) { |
| addExports0(m, source, m2); |
| targets.add(m2); |
| } |
| } |
| } |
| if (!targets.isEmpty()) { |
| exportedPackages.put(source, targets); |
| } |
| |
| } else { |
| // unqualified exports |
| addExportsToAll0(m, source); |
| exportedPackages.put(source, EVERYONE_SET); |
| } |
| } |
| |
| if (!openPackages.isEmpty()) |
| m.openPackages = openPackages; |
| if (!exportedPackages.isEmpty()) |
| m.exportedPackages = exportedPackages; |
| } |
| |
| |
| // -- annotations -- |
| |
| /** |
| * {@inheritDoc} |
| * This method returns {@code null} when invoked on an unnamed module. |
| */ |
| @Override |
| public <T extends Annotation> T getAnnotation(Class<T> annotationClass) { |
| return moduleInfoClass().getDeclaredAnnotation(annotationClass); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * This method returns an empty array when invoked on an unnamed module. |
| */ |
| @Override |
| public Annotation[] getAnnotations() { |
| return moduleInfoClass().getAnnotations(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * This method returns an empty array when invoked on an unnamed module. |
| */ |
| @Override |
| public Annotation[] getDeclaredAnnotations() { |
| return moduleInfoClass().getDeclaredAnnotations(); |
| } |
| |
| // cached class file with annotations |
| private volatile Class<?> moduleInfoClass; |
| |
| private Class<?> moduleInfoClass() { |
| Class<?> clazz = this.moduleInfoClass; |
| if (clazz != null) |
| return clazz; |
| |
| synchronized (this) { |
| clazz = this.moduleInfoClass; |
| if (clazz == null) { |
| if (isNamed()) { |
| PrivilegedAction<Class<?>> pa = this::loadModuleInfoClass; |
| clazz = AccessController.doPrivileged(pa); |
| } |
| if (clazz == null) { |
| class DummyModuleInfo { } |
| clazz = DummyModuleInfo.class; |
| } |
| this.moduleInfoClass = clazz; |
| } |
| return clazz; |
| } |
| } |
| |
| private Class<?> loadModuleInfoClass() { |
| Class<?> clazz = null; |
| try (InputStream in = getResourceAsStream("module-info.class")) { |
| if (in != null) |
| clazz = loadModuleInfoClass(in); |
| } catch (Exception ignore) { } |
| return clazz; |
| } |
| |
| /** |
| * Loads module-info.class as a package-private interface in a class loader |
| * that is a child of this module's class loader. |
| */ |
| private Class<?> loadModuleInfoClass(InputStream in) throws IOException { |
| final String MODULE_INFO = "module-info"; |
| |
| ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS |
| + ClassWriter.COMPUTE_FRAMES); |
| |
| ClassVisitor cv = new ClassVisitor(Opcodes.ASM5, cw) { |
| @Override |
| public void visit(int version, |
| int access, |
| String name, |
| String signature, |
| String superName, |
| String[] interfaces) { |
| cw.visit(version, |
| Opcodes.ACC_INTERFACE |
| + Opcodes.ACC_ABSTRACT |
| + Opcodes.ACC_SYNTHETIC, |
| MODULE_INFO, |
| null, |
| "java/lang/Object", |
| null); |
| } |
| @Override |
| public AnnotationVisitor visitAnnotation(String desc, boolean visible) { |
| // keep annotations |
| return super.visitAnnotation(desc, visible); |
| } |
| @Override |
| public void visitAttribute(Attribute attr) { |
| // drop non-annotation attributes |
| } |
| }; |
| |
| ClassReader cr = new ClassReader(in); |
| cr.accept(cv, 0); |
| byte[] bytes = cw.toByteArray(); |
| |
| ClassLoader cl = new ClassLoader(loader) { |
| @Override |
| protected Class<?> findClass(String cn)throws ClassNotFoundException { |
| if (cn.equals(MODULE_INFO)) { |
| return super.defineClass(cn, bytes, 0, bytes.length); |
| } else { |
| throw new ClassNotFoundException(cn); |
| } |
| } |
| }; |
| |
| try { |
| return cl.loadClass(MODULE_INFO); |
| } catch (ClassNotFoundException e) { |
| throw new InternalError(e); |
| } |
| } |
| |
| |
| // -- misc -- |
| |
| |
| /** |
| * Returns an input stream for reading a resource in this module. The |
| * {@code name} parameter is a {@code '/'}-separated path name that |
| * identifies the resource. |
| * |
| * <p> A resource in a named modules may be <em>encapsulated</em> so that |
| * it cannot be located by code in other modules. Whether a resource can be |
| * located or not is determined as follows: |
| * |
| * <ul> |
| * <li> The <em>package name</em> of the resource is derived from the |
| * subsequence of characters that precedes the last {@code '/'} and then |
| * replacing each {@code '/'} character in the subsequence with |
| * {@code '.'}. For example, the package name derived for a resource |
| * named "{@code a/b/c/foo.properties}" is "{@code a.b.c}". </li> |
| * |
| * <li> If the package name is a package in the module then the package |
| * must be {@link #isOpen open} the module of the caller of this method. |
| * If the package is not in the module then the resource is not |
| * encapsulated. Resources in the unnamed package or "{@code META-INF}", |
| * for example, are never encapsulated because they can never be |
| * packages in a named module. </li> |
| * |
| * <li> As a special case, resources ending with "{@code .class}" are |
| * never encapsulated. </li> |
| * </ul> |
| * |
| * <p> This method returns {@code null} if the resource is not in this |
| * module, the resource is encapsulated and cannot be located by the caller, |
| * or access to the resource is denied by the security manager. |
| * |
| * @param name |
| * The resource name |
| * |
| * @return An input stream for reading the resource or {@code null} |
| * |
| * @throws IOException |
| * If an I/O error occurs |
| * |
| * @see java.lang.module.ModuleReader#open(String) |
| */ |
| @CallerSensitive |
| public InputStream getResourceAsStream(String name) throws IOException { |
| Objects.requireNonNull(name); |
| |
| if (isNamed() && !ResourceHelper.isSimpleResource(name)) { |
| Module caller = Reflection.getCallerClass().getModule(); |
| if (caller != this && caller != Object.class.getModule()) { |
| // ignore packages added for proxies via addPackage |
| Set<String> packages = getDescriptor().packages(); |
| String pn = ResourceHelper.getPackageName(name); |
| if (packages.contains(pn) && !isOpen(pn, caller)) { |
| // resource is in package not open to caller |
| return null; |
| } |
| } |
| } |
| |
| String mn = this.name; |
| |
| // special-case built-in class loaders to avoid URL connection |
| if (loader == null) { |
| return BootLoader.findResourceAsStream(mn, name); |
| } else if (loader instanceof BuiltinClassLoader) { |
| return ((BuiltinClassLoader) loader).findResourceAsStream(mn, name); |
| } |
| |
| // locate resource in module |
| JavaLangAccess jla = SharedSecrets.getJavaLangAccess(); |
| URL url = jla.findResource(loader, mn, name); |
| if (url != null) { |
| try { |
| return url.openStream(); |
| } catch (SecurityException e) { } |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Returns the string representation of this module. For a named module, |
| * the representation is the string {@code "module"}, followed by a space, |
| * and then the module name. For an unnamed module, the representation is |
| * the string {@code "unnamed module"}, followed by a space, and then an |
| * implementation specific string that identifies the unnamed module. |
| * |
| * @return The string representation of this module |
| */ |
| @Override |
| public String toString() { |
| if (isNamed()) { |
| return "module " + name; |
| } else { |
| String id = Integer.toHexString(System.identityHashCode(this)); |
| return "unnamed module @" + id; |
| } |
| } |
| |
| |
| // -- native methods -- |
| |
| // JVM_DefineModule |
| private static native void defineModule0(Module module, |
| boolean isOpen, |
| String version, |
| String location, |
| String[] pns); |
| |
| // JVM_AddReadsModule |
| private static native void addReads0(Module from, Module to); |
| |
| // JVM_AddModuleExports |
| private static native void addExports0(Module from, String pn, Module to); |
| |
| // JVM_AddModuleExportsToAll |
| private static native void addExportsToAll0(Module from, String pn); |
| |
| // JVM_AddModuleExportsToAllUnnamed |
| private static native void addExportsToAllUnnamed0(Module from, String pn); |
| |
| // JVM_AddModulePackage |
| private static native void addPackage0(Module m, String pn); |
| |
| /** |
| * Register shared secret to provide access to package-private methods |
| */ |
| static { |
| SharedSecrets.setJavaLangReflectModuleAccess( |
| new JavaLangReflectModuleAccess() { |
| @Override |
| public Module defineUnnamedModule(ClassLoader loader) { |
| return new Module(loader); |
| } |
| @Override |
| public Module defineModule(ClassLoader loader, |
| ModuleDescriptor descriptor, |
| URI uri) { |
| return new Module(null, loader, descriptor, uri); |
| } |
| @Override |
| public void addReads(Module m1, Module m2) { |
| m1.implAddReads(m2, true); |
| } |
| @Override |
| public void addReadsAllUnnamed(Module m) { |
| m.implAddReads(Module.ALL_UNNAMED_MODULE); |
| } |
| @Override |
| public void addExports(Module m, String pn, Module other) { |
| m.implAddExportsOrOpens(pn, other, false, true); |
| } |
| @Override |
| public void addOpens(Module m, String pn, Module other) { |
| m.implAddExportsOrOpens(pn, other, true, true); |
| } |
| @Override |
| public void addExportsToAll(Module m, String pn) { |
| m.implAddExportsOrOpens(pn, Module.EVERYONE_MODULE, false, true); |
| } |
| @Override |
| public void addOpensToAll(Module m, String pn) { |
| m.implAddExportsOrOpens(pn, Module.EVERYONE_MODULE, true, true); |
| } |
| @Override |
| public void addExportsToAllUnnamed(Module m, String pn) { |
| m.implAddExportsOrOpens(pn, Module.ALL_UNNAMED_MODULE, false, true); |
| } |
| @Override |
| public void addOpensToAllUnnamed(Module m, String pn) { |
| m.implAddExportsOrOpens(pn, Module.ALL_UNNAMED_MODULE, true, true); |
| } |
| @Override |
| public void addUses(Module m, Class<?> service) { |
| m.implAddUses(service); |
| } |
| @Override |
| public void addPackage(Module m, String pn) { |
| m.implAddPackage(pn, true); |
| } |
| @Override |
| public ServicesCatalog getServicesCatalog(Layer layer) { |
| return layer.getServicesCatalog(); |
| } |
| @Override |
| public Stream<Layer> layers(Layer layer) { |
| return layer.layers(); |
| } |
| @Override |
| public Stream<Layer> layers(ClassLoader loader) { |
| return Layer.layers(loader); |
| } |
| @Override |
| public boolean isStaticallyExported(Module module, String pn, Module other) { |
| return module.isStaticallyExportedOrOpen(pn, other, false); |
| } |
| }); |
| } |
| } |
