| /* |
| * 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. |
| */ |
| |
| /** |
| * @test |
| * @bug 8166628 |
| * @summary Verify that loading a classfile for a local class that is a member of an anonymous class |
| * won't break compilation. |
| * @modules jdk.compiler |
| */ |
| |
| import java.io.IOException; |
| import java.io.StringWriter; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Set; |
| |
| import javax.annotation.processing.AbstractProcessor; |
| import javax.annotation.processing.RoundEnvironment; |
| import javax.annotation.processing.SupportedAnnotationTypes; |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.PackageElement; |
| import javax.lang.model.element.TypeElement; |
| import javax.lang.model.util.Elements; |
| import javax.tools.Diagnostic; |
| import javax.tools.DiagnosticListener; |
| import javax.tools.JavaCompiler; |
| import javax.tools.JavaFileObject; |
| import javax.tools.SimpleJavaFileObject; |
| import javax.tools.ToolProvider; |
| |
| import com.sun.source.tree.BlockTree; |
| import com.sun.source.tree.ClassTree; |
| import com.sun.source.tree.MethodTree; |
| import com.sun.source.tree.Tree; |
| import com.sun.source.tree.VariableTree; |
| import com.sun.source.util.JavacTask; |
| import com.sun.source.util.TaskEvent; |
| import com.sun.source.util.TaskEvent.Kind; |
| import com.sun.source.util.TaskListener; |
| import com.sun.source.util.TreePath; |
| import com.sun.source.util.TreePathScanner; |
| import com.sun.source.util.Trees; |
| |
| public class LocalInAnonymous { |
| |
| public static void main(String[] args) throws Exception { |
| Path base = Paths.get(".").toAbsolutePath(); |
| Path classes = base.resolve("classes"); |
| JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); |
| DiagnosticListener<JavaFileObject> noErrors = d -> { |
| if (d.getKind() == Diagnostic.Kind.ERROR) { |
| throw new AssertionError(d.getMessage(null)); |
| } |
| }; |
| List<TJFO> files = Arrays.asList(new TJFO("Test", CODE)); |
| List<String> options = Arrays.asList("-d", classes.toString()); |
| StringWriter out = new StringWriter(); |
| JavacTask task = (JavacTask) compiler.getTask(out, null, noErrors, options, null, files); |
| task.call(); |
| if (!out.toString().isEmpty()) { |
| throw new AssertionError("Unexpected output: " + out); |
| } |
| options = Arrays.asList("-classpath", classes.toString(), "-d", classes.toString()); |
| JavacTask task2 = (JavacTask) compiler.getTask(out, null, noErrors, options, null, files); |
| task2.addTaskListener(new TaskListener() { |
| @Override |
| public void started(TaskEvent te) { |
| } |
| @Override |
| public void finished(TaskEvent te) { |
| if (te.getKind() == Kind.ENTER) { |
| Element pack = task2.getElements().getTypeElement("Test").getEnclosingElement(); |
| System.err.println(pack.getEnclosedElements()); |
| } |
| if (te.getKind() == Kind.ANALYZE) { |
| PackageElement pack = task2.getElements().getPackageOf(te.getTypeElement()); |
| new OwnerCheck(Trees.instance(task2), pack).scan(te.getCompilationUnit(), null); |
| } |
| } |
| }); |
| task2.call(); |
| if (!out.toString().isEmpty()) { |
| throw new AssertionError("Unexpected output: " + out); |
| } |
| options = Arrays.asList("-classpath", classes.toString(), |
| "-d", classes.toString(), |
| "-processorpath", System.getProperty("test.classes"), |
| "-processor", Processor.class.getName()); |
| JavacTask task3 = (JavacTask) compiler.getTask(out, null, noErrors, options, null, files); |
| task3.call(); |
| if (!out.toString().isEmpty()) { |
| throw new AssertionError("Unexpected output: " + out); |
| } |
| } |
| |
| private static final class TJFO extends SimpleJavaFileObject { |
| |
| private final String code; |
| |
| public TJFO(String name, String code) throws URISyntaxException { |
| super(new URI("mem:///" + name + ".java"), Kind.SOURCE); |
| this.code = code; |
| } |
| |
| @Override |
| public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException { |
| return code; |
| } |
| |
| } |
| |
| @SupportedAnnotationTypes("*") |
| public static final class Processor extends AbstractProcessor { |
| |
| @Override |
| public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { |
| Trees trees = Trees.instance(processingEnv); |
| Elements elements = processingEnv.getElementUtils(); |
| Element pack = elements.getTypeElement("Test").getEnclosingElement(); |
| for (Element root : pack.getEnclosedElements()) { |
| TreePath tp = trees.getPath(root); |
| new OwnerCheck(trees, pack).scan(tp.getCompilationUnit(), null); |
| |
| } |
| return false; |
| } |
| |
| } |
| |
| private static final class OwnerCheck extends TreePathScanner<Void, Void> { |
| private final Trees trees; |
| private Element currentOwner; |
| |
| public OwnerCheck(Trees trees, Element pack) { |
| this.trees = trees; |
| this.currentOwner = pack; |
| } |
| |
| @Override |
| public Void visitClass(ClassTree node, Void p) { |
| Element prevOwner = currentOwner; |
| try { |
| Element currentElement = trees.getElement(getCurrentPath()); |
| if (currentOwner != null && currentElement.getEnclosingElement() != currentOwner) { |
| throw new AssertionError("Unexpected owner!"); |
| } |
| currentOwner = currentElement; |
| return super.visitClass(node, p); |
| } finally { |
| currentOwner = prevOwner; |
| } |
| } |
| |
| @Override |
| public Void visitMethod(MethodTree node, Void p) { |
| Element prevOwner = currentOwner; |
| try { |
| Element currentElement = trees.getElement(getCurrentPath()); |
| if (currentElement.getEnclosingElement() != currentOwner) { |
| throw new AssertionError("Unexpected owner!"); |
| } |
| currentOwner = currentElement; |
| return super.visitMethod(node, p); |
| } finally { |
| currentOwner = prevOwner; |
| } |
| } |
| |
| @Override |
| public Void visitVariable(VariableTree node, Void p) { |
| Element currentElement = trees.getElement(getCurrentPath()); |
| if (!currentElement.getKind().isField()) { |
| return super.visitVariable(node, p); |
| } |
| Element prevOwner = currentOwner; |
| try { |
| if (currentElement.getEnclosingElement() != currentOwner) { |
| throw new AssertionError("Unexpected owner!"); |
| } |
| currentOwner = currentElement; |
| return super.visitVariable(node, p); |
| } finally { |
| currentOwner = prevOwner; |
| } |
| } |
| |
| @Override |
| public Void visitBlock(BlockTree node, Void p) { |
| if (getCurrentPath().getParentPath().getLeaf().getKind() != Tree.Kind.CLASS) { |
| return super.visitBlock(node, p); |
| } |
| Element prevOwner = currentOwner; |
| try { |
| currentOwner = null; |
| return super.visitBlock(node, p); |
| } finally { |
| currentOwner = prevOwner; |
| } |
| } |
| |
| } |
| |
| private static final String CODE = |
| "public class Test {\n" + |
| " void test() {\n" + |
| " Object o = new Object() {\n" + |
| " class IC {}\n" + |
| " public Object get() {\n" + |
| " return new IC();\n" + |
| " }\n" + |
| " };\n" + |
| " }\n" + |
| " {\n" + |
| " Object o = new Object() {\n" + |
| " class IC {}\n" + |
| " public Object get() {\n" + |
| " return new IC();\n" + |
| " }\n" + |
| " };\n" + |
| " }\n" + |
| " static {\n" + |
| " Object o = new Object() {\n" + |
| " class IC {}\n" + |
| " public Object get() {\n" + |
| " return new IC();\n" + |
| " }\n" + |
| " };\n" + |
| " }\n" + |
| " Object o1 = new Object() {\n" + |
| " class IC {}\n" + |
| " public Object get() {\n" + |
| " return new IC();\n" + |
| " }\n" + |
| " };\n" + |
| " static Object o2 = new Object() {\n" + |
| " class IC {}\n" + |
| " public Object get() {\n" + |
| " return new IC();\n" + |
| " }\n" + |
| " };\n" + |
| "}"; |
| } |