author | jjg |
Wed, 10 Aug 2016 15:47:46 -0700 | |
changeset 40308 | 274367a99f98 |
parent 37848 | 3c8ff4204d2d |
child 41638 | 7b8819e22551 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006, 2016, 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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* @test |
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* @bug 6374357 6308351 6707027 |
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* @summary PackageElement.getEnclosedElements() throws ClassReader$BadClassFileException |
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* @author Peter von der Ah\u00e9 |
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* @modules jdk.compiler/com.sun.tools.javac.model |
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* @run main/othervm -Xmx256m Main |
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*/ |
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import java.io.File; |
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import java.util.*; |
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import java.util.Map.Entry; |
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import javax.lang.model.element.Element; |
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import javax.lang.model.element.ElementKind; |
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import javax.lang.model.element.ModuleElement; |
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import javax.lang.model.element.PackageElement; |
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import javax.lang.model.element.TypeElement; |
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import javax.lang.model.util.Elements; |
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import javax.tools.*; |
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import com.sun.source.util.JavacTask; |
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import com.sun.tools.javac.model.JavacElements; |
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import static javax.tools.StandardLocation.CLASS_PATH; |
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import static javax.tools.StandardLocation.PLATFORM_CLASS_PATH; |
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import static javax.tools.JavaFileObject.Kind.CLASS; |
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public class Main { |
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public static PackageElement getPackage(TypeElement type) { |
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Element owner = type; |
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while (owner.getKind() != ElementKind.PACKAGE) |
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owner = owner.getEnclosingElement(); |
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return (PackageElement)owner; |
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} |
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static int progress = 0; |
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static JavaCompiler tool; |
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static JavacTask javac; |
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static Elements elements; |
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static List<String> addmods_ALL_SYSTEM = Arrays.asList("--add-modules", "ALL-SYSTEM"); |
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public static void main(String[] args) throws Exception { |
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JavaCompiler tool = ToolProvider.getSystemJavaCompiler(); |
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try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) { |
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fm.setLocation(CLASS_PATH, Collections.<File>emptyList()); |
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JavacTask javac = (JavacTask)tool.getTask(null, fm, null, addmods_ALL_SYSTEM, null, null); |
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Elements elements = javac.getElements(); |
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final Map<String, Set<String>> packages = new LinkedHashMap<>(); |
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int nestedClasses = 0; |
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int classes = 0; |
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for (JavaFileObject file : fm.list(PLATFORM_CLASS_PATH, "", EnumSet.of(CLASS), true)) { |
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String type = fm.inferBinaryName(PLATFORM_CLASS_PATH, file); |
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if (type.endsWith("package-info")) |
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continue; |
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if (type.endsWith("module-info")) |
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continue; |
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String moduleName = fm.asPath(file).getName(1).toString(); |
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try { |
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ModuleElement me = elements.getModuleElement(moduleName); |
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me.getClass(); |
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TypeElement elem = ((JavacElements) elements).getTypeElement(me, type); |
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if (elem == null && type.indexOf('$') > 0) { |
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nestedClasses++; |
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type = null; |
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continue; |
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} |
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classes++; |
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String pack = getPackage(elem).getQualifiedName().toString(); |
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packages.computeIfAbsent(me.getQualifiedName().toString(), |
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m -> new LinkedHashSet<>()).add(pack); |
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elem.getKind(); // force completion |
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type = null; |
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} finally { |
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if (type != null) |
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System.err.println("Looking at " + type); |
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} |
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} |
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javac = null; |
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elements = null; |
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javac = (JavacTask)tool.getTask(null, fm, null, addmods_ALL_SYSTEM, null, null); |
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elements = javac.getElements(); |
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for (Entry<String, Set<String>> module2Packages : packages.entrySet()) { |
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ModuleElement me = elements.getModuleElement(module2Packages.getKey()); |
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me.getClass(); |
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for (String name : module2Packages.getValue()) { |
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PackageElement pe = ((JavacElements) elements).getPackageElement(me, name); |
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for (Element e : pe.getEnclosedElements()) { |
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e.getSimpleName().getClass(); |
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} |
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} |
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} |
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/* |
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* A few sanity checks based on current values: |
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* |
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* packages: 775, classes: 12429 + 5917 |
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* |
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* As the platform evolves the numbers are likely to grow |
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* monotonically but in case somebody gets a clever idea for |
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* limiting the number of packages exposed, this number might |
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* drop. So we test low values. |
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*/ |
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System.out.format("packages: %s, classes: %s + %s%n", |
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packages.size(), classes, nestedClasses); |
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if (classes < 9000) |
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throw new AssertionError("Too few classes in PLATFORM_CLASS_PATH ;-)"); |
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if (packages.values().stream().flatMap(packs -> packs.stream()).count() < 530) |
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throw new AssertionError("Too few packages in PLATFORM_CLASS_PATH ;-)"); |
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if (nestedClasses < 3000) |
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throw new AssertionError("Too few nested classes in PLATFORM_CLASS_PATH ;-)"); |
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} |
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} |
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} |