96 lines
3.8 KiB
Java
96 lines
3.8 KiB
Java
/*
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* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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import java.lang.module.ModuleDescriptor;
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import java.lang.module.ModuleDescriptor.Requires;
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import java.lang.module.ModuleDescriptor.Requires.Modifier;
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import java.util.Optional;
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public class ArchivedEnumApp {
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public static void main(final String[] args) throws Exception {
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// Validate the archiving of the synthetic Modifier.$VALUES field:
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for (Modifier mod : Modifier.values()) {
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check(mod);
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}
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if (Modifier.values().length != 4) {
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throw new RuntimeException("Modifier.$VALUES.length expected: 4, actual: " + Modifier.values().length);
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}
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// All 4 enums must exist in synthetic Modifier.$VALUES
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check_in_array(Modifier.MANDATED);
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check_in_array(Modifier.STATIC);
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check_in_array(Modifier.SYNTHETIC);
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check_in_array(Modifier.TRANSITIVE);
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// Find this module from (archived) boot layer
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String moduleName = "java.management";
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Optional<Module> module = ModuleLayer.boot().findModule(moduleName);
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if (module.isEmpty()) {
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throw new RuntimeException(moduleName + " module is missing in boot layer");
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}
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ModuleDescriptor md = module.get().getDescriptor();
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System.out.println("Module: " + md);
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for (Requires r : md.requires()) {
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System.out.println("Requires: " + r);
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for (Modifier mod : r.modifiers()) {
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System.out.println(" modifier: " + mod);
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check(mod);
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}
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}
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System.out.println("Success");
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}
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static void check(Modifier mod) {
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// The archived Enum object must equal to one of the following
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// four values.
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if (mod != Modifier.MANDATED &&
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mod != Modifier.STATIC &&
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mod != Modifier.SYNTHETIC &&
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mod != Modifier.TRANSITIVE) {
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System.out.println("mod = " + info(mod));
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System.out.println("Modifier.MANDATED = " + info(Modifier.MANDATED));
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System.out.println("Modifier.STATIC = " + info(Modifier.STATIC));
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System.out.println("Modifier.SYNTHETIC = " + info(Modifier.SYNTHETIC));
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System.out.println("Modifier.TRANSITIVE = " + info(Modifier.TRANSITIVE));
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throw new RuntimeException("Archived enum object does not match static fields in enum class: " + info(mod));
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}
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}
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static void check_in_array(Modifier mod) {
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for (Modifier m : Modifier.values()) {
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if (mod == m) {
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return;
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}
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}
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throw new RuntimeException("Enum object is not in $VALUES array: " + info(mod));
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}
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static String info(Object o) {
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return "@0x" + Integer.toHexString(System.identityHashCode(o)) + " " + o;
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}
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}
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