Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2006, 2013, 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.

  */

 /**

  * @test

  * @bug     6374357 6308351 6707027

  * @summary PackageElement.getEnclosedElements() throws ClassReader$BadClassFileException

  * @author  Peter von der Ah\u00e9

  * @run main/othervm -Xmx256m Main

  */

 import java.io.File;

 import java.util.*;

 import javax.lang.model.element.Element;

 import javax.lang.model.element.ElementKind;

 import javax.lang.model.element.PackageElement;

 import javax.lang.model.element.TypeElement;

 import javax.lang.model.util.Elements;

 import javax.tools.*;

 import com.sun.source.util.JavacTask;

 import static javax.tools.StandardLocation.CLASS_PATH;

 import static javax.tools.StandardLocation.PLATFORM_CLASS_PATH;

 import static javax.tools.JavaFileObject.Kind.CLASS;

 public class Main {

     public static PackageElement getPackage(TypeElement type) {

         Element owner = type;

         while (owner.getKind() != ElementKind.PACKAGE)

             owner = owner.getEnclosingElement();

         return (PackageElement)owner;

     }

     static int progress = 0;

     static JavaCompiler tool;

     static JavacTask javac;

     static Elements elements;

     public static void main(String[] args) throws Exception {

         if (haveAltRt()) {

             System.out.println("Warning: alt-rt.jar detected, test skipped");

             return;

         }

         JavaCompiler tool = ToolProvider.getSystemJavaCompiler();

         StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);

         fm.setLocation(CLASS_PATH, Collections.<File>emptyList());

         JavacTask javac = (JavacTask)tool.getTask(null, fm, null, null, null, null);

         Elements elements = javac.getElements();

         final Set<String> packages = new LinkedHashSet<String>();

         int nestedClasses = 0;

         int classes = 0;

         for (JavaFileObject file : fm.list(PLATFORM_CLASS_PATH, "", EnumSet.of(CLASS), true)) {

             String type = fm.inferBinaryName(PLATFORM_CLASS_PATH, file);

             if (type.endsWith("package-info"))

                 continue;

             try {

                 TypeElement elem = elements.getTypeElement(type);

                 if (elem == null && type.indexOf('$') > 0) {

                     nestedClasses++;

                     type = null;

                     continue;

                 }

                 classes++;

                 packages.add(getPackage(elem).getQualifiedName().toString());

                 elements.getTypeElement(type).getKind(); // force completion

                 type = null;

             } finally {

                 if (type != null)

                     System.err.println("Looking at " + type);

             }

         }

         javac = null;

         elements = null;

         javac = (JavacTask)tool.getTask(null, fm, null, null, null, null);

         elements = javac.getElements();

         for (String name : packages) {

             PackageElement pe = elements.getPackageElement(name);

             for (Element e : pe.getEnclosedElements()) {

                 e.getSimpleName().getClass();

             }

         }

         /*

          * A few sanity checks based on current values:

          *

          * packages: 775, classes: 12429 + 5917

          *

          * As the platform evolves the numbers are likely to grow

          * monotonically but in case somebody gets a clever idea for

          * limiting the number of packages exposed, this number might

          * drop.  So we test low values.

          */

         System.out.format("packages: %s, classes: %s + %s%n",

                           packages.size(), classes, nestedClasses);

         if (classes < 9000)

             throw new AssertionError("Too few classes in PLATFORM_CLASS_PATH ;-)");

         if (packages.size() < 530)

             throw new AssertionError("Too few packages in PLATFORM_CLASS_PATH ;-)");

         if (nestedClasses < 3000)

             throw new AssertionError("Too few nested classes in PLATFORM_CLASS_PATH ;-)");

     }

     /*

      * If -XX:+AggressiveOpts has been used to test, the option currently

      * instructs the VM to prepend alt-rt.jar onto the bootclasspath. This

      * overrides the default TreeMap implemation in rt.jar causing symbol

      * resolution problems (caused by inconsistent inner class), although

      * alt-rt.jar is being eliminated, we have this sanity check to detect this

      * case and skip the test.

      */

     static boolean haveAltRt() {

         String bootClassPath = System.getProperty("sun.boot.class.path");

         for (String cp : bootClassPath.split(File.pathSeparator)) {

             if (cp.endsWith("alt-rt.jar")) {

                 System.err.println("Warning: detected alt-rt.jar in "

                         + "sun.boot.class.path");

                 return true;

             }

         }

         return false;

     }

 }