| /* |
| * Copyright (c) 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. |
| * |
| * 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 p1; |
| |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.lang.module.ModuleDescriptor; |
| 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.Collections; |
| 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; |
| } |
| |
| public static void main(String... args) throws Exception { |
| // load another package |
| p2.T.test(); |
| |
| // validate the module descriptor |
| validate(Main.class.getModule()); |
| |
| // validate the Moduletarget attribute for java.base |
| FileSystem fs = FileSystems.newFileSystem(URI.create("jrt:/"), |
| Collections.emptyMap()); |
| Path path = fs.getPath("/", "modules", "java.base", "module-info.class"); |
| try (InputStream in = Files.newInputStream(path)) { |
| if (! hasModuleTarget(in)) { |
| throw new RuntimeException("Missing ModuleTarget for java.base"); |
| } |
| } |
| } |
| |
| static void validate(Module module) throws IOException { |
| ModuleDescriptor md = module.getDescriptor(); |
| |
| // read m1/module-info.class |
| FileSystem fs = FileSystems.newFileSystem(URI.create("jrt:/"), |
| Collections.emptyMap()); |
| Path path = fs.getPath("/", "modules", module.getName(), "module-info.class"); |
| ModuleDescriptor md1 = ModuleDescriptor.read(Files.newInputStream(path)); |
| |
| |
| // check the module descriptor of a system module and read from jimage |
| checkPackages(md.packages(), "p1", "p2"); |
| checkPackages(md1.packages(), "p1", "p2"); |
| |
| try (InputStream in = Files.newInputStream(path)) { |
| checkModuleTargetAttribute(in, "p1"); |
| } |
| } |
| |
| static void checkPackages(Set<String> pkgs, String... expected) { |
| if (!pkgs.equals(Set.of(expected))) { |
| throw new RuntimeException(pkgs + " expected: " + Set.of(expected)); |
| } |
| } |
| |
| static void checkModuleTargetAttribute(InputStream in, String modName) throws IOException { |
| if (hasModuleTarget(in)) { |
| throw new RuntimeException("ModuleTarget present for " + modName); |
| } |
| } |
| } |