127 lines
4.2 KiB
Java
127 lines
4.2 KiB
Java
/*
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* Copyright (c) 2006, 2015, 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 6473148
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* @summary TreePath.iterator() throws NPE
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* @modules jdk.compiler
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*/
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import java.io.*;
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import java.util.Arrays;
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import java.util.Iterator;
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import java.util.Set;
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import javax.annotation.processing.*;
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import javax.lang.model.SourceVersion;
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import javax.lang.model.element.Element;
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import javax.lang.model.element.TypeElement;
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import javax.lang.model.util.ElementFilter;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaFileObject;
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import javax.tools.StandardJavaFileManager;
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import javax.tools.ToolProvider;
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import com.sun.source.tree.Tree;
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import com.sun.source.util.*;
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@SupportedAnnotationTypes("*")
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public class TestTreePath extends AbstractProcessor {
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@Override
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public boolean process(Set<? extends TypeElement> annotations,
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RoundEnvironment roundEnv) {
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final Trees trees = Trees.instance(this.processingEnv);
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for (Element element : ElementFilter.typesIn(roundEnv.getRootElements())) {
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checkTreePath(trees, element, 2);
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for (Element member : element.getEnclosedElements())
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checkTreePath(trees, member, 3);
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}
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return true;
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}
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private void checkTreePath(Trees trees, Element element, int expectedLength) {
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TreePath path = trees.getPath(element);
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assert path != null;
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int enhancedLength = 0;
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for (Tree tree : path)
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++enhancedLength;
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if (enhancedLength != expectedLength)
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throw new RuntimeException("found path length is wrong");
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int normalLoopLength = 0;
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Iterator<Tree> iter = path.iterator();
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while (iter.hasNext()) {
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iter.next();
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++normalLoopLength;
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}
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if (normalLoopLength != expectedLength)
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throw new RuntimeException("found path length is wrong");
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TreePath curr = path;
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// using getParent
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int whileLoopLength = 0;
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while (curr != null) {
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++whileLoopLength;
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curr = curr.getParentPath();
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}
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if (whileLoopLength != expectedLength)
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throw new RuntimeException("found path length is wrong");
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}
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@Override
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public SourceVersion getSupportedSourceVersion() {
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return SourceVersion.latest();
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}
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File writeTestFile() throws IOException {
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File f = new File("Test.java");
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PrintWriter out = new PrintWriter(new FileWriter(f));
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out.println("class Test { void method() { } }");
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out.close();
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return f;
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}
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public void run() throws IOException {
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JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
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try (StandardJavaFileManager fileManager
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= compiler.getStandardFileManager(null, null, null)) {
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Iterable<? extends JavaFileObject> tests
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= fileManager.getJavaFileObjects(writeTestFile());
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JavaCompiler.CompilationTask task =
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ToolProvider.getSystemJavaCompiler().getTask(
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null, null, null,
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Arrays.asList("-processor", this.getClass().getName()), null,
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tests);
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task.call();
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}
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}
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public static void main(String[] args) throws IOException {
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new TestTreePath().run();
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}
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}
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