| /* |
| * Copyright (c) 2006, 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. |
| */ |
| |
| /** |
| * @test |
| * @bug 6374357 6308351 6707027 |
| * @summary PackageElement.getEnclosedElements() throws ClassReader$BadClassFileException |
| * @author Peter von der Ah\u00e9 |
| * @modules jdk.compiler/com.sun.tools.javac.model |
| * @run main/othervm -Xmx256m Main |
| */ |
| |
| import java.io.File; |
| import java.util.*; |
| import java.util.Map.Entry; |
| import java.util.stream.StreamSupport; |
| |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.ElementKind; |
| import javax.lang.model.element.ModuleElement; |
| import javax.lang.model.element.PackageElement; |
| import javax.lang.model.element.TypeElement; |
| import javax.lang.model.util.Elements; |
| import javax.tools.*; |
| import javax.tools.JavaFileManager.Location; |
| |
| import com.sun.source.util.JavacTask; |
| import com.sun.tools.javac.model.JavacElements; |
| |
| import static javax.tools.StandardLocation.CLASS_PATH; |
| import static javax.tools.StandardLocation.PLATFORM_CLASS_PATH; |
| import static javax.tools.StandardLocation.SYSTEM_MODULES; |
| 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 { |
| JavaCompiler tool = ToolProvider.getSystemJavaCompiler(); |
| try (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 Map<String, Set<String>> packages = new LinkedHashMap<>(); |
| |
| 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; |
| if (type.endsWith("module-info")) |
| continue; |
| String moduleName = fm.asPath(file).getName(1).toString(); |
| try { |
| ModuleElement me = elements.getModuleElement(moduleName); |
| me.getClass(); |
| TypeElement elem = ((JavacElements) elements).getTypeElement(me, type); |
| if (elem == null && type.indexOf('$') > 0) { |
| nestedClasses++; |
| type = null; |
| continue; |
| } |
| classes++; |
| String pack = getPackage(elem).getQualifiedName().toString(); |
| packages.computeIfAbsent(me.getQualifiedName().toString(), |
| m -> new LinkedHashSet<>()).add(pack); |
| elem.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 (Entry<String, Set<String>> module2Packages : packages.entrySet()) { |
| ModuleElement me = elements.getModuleElement(module2Packages.getKey()); |
| for (String name : module2Packages.getValue()) { |
| PackageElement pe = ((JavacElements) elements).getPackageElement(me, 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.values().stream().flatMap(packs -> packs.stream()).count() < 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 ;-)"); |
| } |
| } |
| } |