| /* |
| * Copyright (c) 2017, 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. |
| * |
| * 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 p4; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.module.ModuleDescriptor; |
| import java.lang.module.ModuleFinder; |
| import java.net.URI; |
| import java.nio.file.FileSystem; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import jdk.internal.module.ClassFileAttributes; |
| import jdk.internal.module.ClassFileAttributes.ModuleTargetAttribute; |
| import jdk.internal.module.ClassFileConstants; |
| 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.Opcodes; |
| |
| public class Main { |
| private static boolean hasModuleTarget(InputStream in) throws IOException { |
| ModuleTargetAttribute[] modTargets = new ModuleTargetAttribute[1]; |
| ClassVisitor cv = new ClassVisitor(Opcodes.ASM5) { |
| @Override |
| public void visitAttribute(Attribute attr) { |
| if (attr instanceof ModuleTargetAttribute) { |
| modTargets[0] = (ModuleTargetAttribute)attr; |
| } |
| } |
| }; |
| |
| // prototype of attributes that should be parsed |
| Attribute[] attrs = new Attribute[] { |
| new ModuleTargetAttribute() |
| }; |
| |
| // parse module-info.class |
| ClassReader cr = new ClassReader(in); |
| cr.accept(cv, attrs, 0); |
| return modTargets[0] != null && modTargets[0].targetPlatform() != null; |
| } |
| |
| private static boolean hasModuleTarget(String modName) throws IOException { |
| FileSystem fs = FileSystems.newFileSystem(URI.create("jrt:/"), Map.of()); |
| Path path = fs.getPath("/", "modules", modName, "module-info.class"); |
| try (InputStream in = Files.newInputStream(path)) { |
| return hasModuleTarget(in); |
| } |
| } |
| |
| // the system module plugin by default drops ModuleTarget attribute |
| private static boolean expectModuleTarget = false; |
| public static void main(String... args) throws IOException { |
| if (args.length > 0) { |
| if (!args[0].equals("retainModuleTarget")) { |
| throw new IllegalArgumentException(args[0]); |
| } |
| |
| expectModuleTarget = true; |
| } |
| |
| // java.base is packaged with ModuleTarget |
| if (!hasModuleTarget("java.base")) { |
| throw new RuntimeException("ModuleTarget absent for java.base"); |
| } |
| |
| // verify module-info.class for m1 and m4 |
| checkModule("m1", "p1", "p2"); |
| checkModule("m4", "p4"); |
| } |
| |
| private static void checkModule(String mn, String... packages) throws IOException { |
| // verify ModuleDescriptor from the runtime module |
| ModuleDescriptor md = ModuleLayer.boot().findModule(mn).get() |
| .getDescriptor(); |
| checkModuleDescriptor(md, packages); |
| |
| // verify ModuleDescriptor from module-info.class read from ModuleReader |
| try (InputStream in = ModuleFinder.ofSystem().find(mn).get() |
| .open().open("module-info.class").get()) { |
| checkModuleDescriptor(ModuleDescriptor.read(in), packages); |
| } |
| |
| // verify ModuleDescriptor from module-info.class read from jimage |
| FileSystem fs = FileSystems.newFileSystem(URI.create("jrt:/"), Map.of()); |
| Path path = fs.getPath("/", "modules", mn, "module-info.class"); |
| checkModuleDescriptor(ModuleDescriptor.read(Files.newInputStream(path)), packages); |
| } |
| |
| static void checkModuleDescriptor(ModuleDescriptor md, String... packages) throws IOException { |
| String mainClass = md.name().replace('m', 'p') + ".Main"; |
| if (!md.mainClass().get().equals(mainClass)) { |
| throw new RuntimeException(md.mainClass().toString()); |
| } |
| |
| // ModuleTarget attribute should be present |
| if (!hasModuleTarget(md.name())) { |
| throw new RuntimeException("ModuleTarget missing for " + md.name()); |
| } |
| |
| Set<String> pkgs = md.packages(); |
| if (!pkgs.equals(Set.of(packages))) { |
| throw new RuntimeException(pkgs + " expected: " + Set.of(packages)); |
| } |
| } |
| } |