150 lines
6.3 KiB
Java
150 lines
6.3 KiB
Java
/*
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* Copyright (c) 2006, 2017, 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 -Xmx512m Main
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*/
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import java.io.File;
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import java.nio.file.Path;
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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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Path path = fm.asPath(file);
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int moduleIndex = path.getNameCount() - type.split("\\Q.\\E").length - 1;
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String moduleName = path.getName(moduleIndex).toString();
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if (moduleName.startsWith("jdk.incubator.")) //incubator modules not in module graph by default
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continue;
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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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}
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