1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/T6855236.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,105 @@
1.4 +/*
1.5 + * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 6855236
1.30 + * @summary Compiler Tree API TreePath class generates NullPointerException from Iterator
1.31 + * @compile T6855236.java
1.32 + * @compile -processor T6855236 -proc:only T6855236.java
1.33 + */
1.34 +
1.35 +import java.util.*;
1.36 +
1.37 +import javax.annotation.processing.*;
1.38 +import javax.lang.model.*;
1.39 +import javax.lang.model.element.*;
1.40 +
1.41 +import com.sun.source.tree.*;
1.42 +import com.sun.source.util.*;
1.43 +
1.44 +@SupportedAnnotationTypes("*")
1.45 +public class T6855236 extends AbstractProcessor {
1.46 +
1.47 + private Trees trees;
1.48 +
1.49 + @Override
1.50 + public void init(ProcessingEnvironment pe) {
1.51 + super.init(pe);
1.52 + trees = Trees.instance(pe);
1.53 + }
1.54 +
1.55 + @Override
1.56 + public boolean process(Set<? extends TypeElement> arg0, RoundEnvironment roundEnvironment) {
1.57 + // Scanner class to scan through various component elements
1.58 + CodeVisitor visitor = new CodeVisitor();
1.59 +
1.60 + for (Element e : roundEnvironment.getRootElements()) {
1.61 + TreePath tp = trees.getPath(e);
1.62 + visitor.scan(tp, trees);
1.63 + }
1.64 +
1.65 + return true;
1.66 + }
1.67 +
1.68 + @Override
1.69 + public SourceVersion getSupportedSourceVersion() {
1.70 + return SourceVersion.latest();
1.71 + }
1.72 +
1.73 + class CodeVisitor extends TreePathScanner<Object, Trees> {
1.74 +
1.75 + @Override
1.76 + public Object visitMethodInvocation(MethodInvocationTree node, Trees p) {
1.77 + System.out.println("current path: ");
1.78 + for (Tree t : getCurrentPath()) {
1.79 + System.out.println(" " + t.getKind() + ": " + trim(t, 64));
1.80 + }
1.81 + System.out.println("parent path: " + getCurrentPath().getParentPath());
1.82 + System.out.println("method select: " + node.getMethodSelect().toString());
1.83 + for (ExpressionTree arg : node.getArguments()) {
1.84 + System.out.println("argument: " + arg.toString());
1.85 + }
1.86 + return super.visitMethodInvocation(node, p);
1.87 + }
1.88 +
1.89 + @Override
1.90 + public Object visitExpressionStatement(ExpressionStatementTree node, Trees p) {
1.91 + ExpressionTree t = node.getExpression();
1.92 + System.out.println();
1.93 + System.out.println("expression statement: " + trim(t, 64));
1.94 + return super.visitExpressionStatement(node, p);
1.95 + }
1.96 +
1.97 + }
1.98 +
1.99 + private String trim(Tree t, int len) {
1.100 + String s = t.toString().trim().replaceAll("\\s+", " ");
1.101 + if (s.length() > len)
1.102 + s = s.substring(0, len) + "...";
1.103 + return s;
1.104 + }
1.105 +
1.106 +}
1.107 +
1.108 +
