1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/api/T6392782.java Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,100 @@
1.4 +/*
1.5 + * Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 6392782
1.30 + * @summary TreeScanner.visitImport returns null, not result of nested scan
1.31 + */
1.32 +
1.33 +import java.io.*;
1.34 +import java.util.*;
1.35 +import javax.tools.*;
1.36 +import com.sun.source.tree.*;
1.37 +import com.sun.source.util.*;
1.38 +import com.sun.tools.javac.api.*;
1.39 +
1.40 +public class T6392782 {
1.41 + public static void main(String... args) throws IOException {
1.42 + String testSrc = System.getProperty("test.src", ".");
1.43 + JavacTool tool = JavacTool.create();
1.44 + StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
1.45 + Iterable<? extends JavaFileObject> files =
1.46 + fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T6392782.class.getName()+".java")));
1.47 + JavacTask task = tool.getTask(null, fm, null, null, null, files);
1.48 + Iterable<? extends Tree> trees = task.parse();
1.49 + TreeScanner<Integer,Void> scanner = new MyScanner();
1.50 + check(scanner, 6, scanner.scan(trees, null));
1.51 +
1.52 + CountNodes nodeCounter = new CountNodes();
1.53 + // 383 nodes with the regular parser; 384 nodes with EndPosParser
1.54 + // We automatically swith to EndPosParser when calling JavacTask.parse()
1.55 + check(nodeCounter, 384, nodeCounter.scan(trees, null));
1.56 +
1.57 + CountIdentifiers idCounter = new CountIdentifiers();
1.58 + check(idCounter, 106, idCounter.scan(trees, null));
1.59 + }
1.60 +
1.61 + private static void check(TreeScanner<?,?> scanner, int expect, int found) {
1.62 + if (found != expect)
1.63 + throw new AssertionError(scanner.getClass().getName() + ": expected: " + expect + " found: " + found);
1.64 + }
1.65 +
1.66 + static class MyScanner extends TreeScanner<Integer,Void> {
1.67 + @Override
1.68 + public Integer visitImport(ImportTree tree, Void ignore) {
1.69 + //System.err.println(tree);
1.70 + return 1;
1.71 + }
1.72 +
1.73 + @Override
1.74 + public Integer reduce(Integer i1, Integer i2) {
1.75 + return (i1 == null ? 0 : i1) + (i2 == null ? 0 : i2);
1.76 + }
1.77 + }
1.78 +
1.79 + // example from TreeScanner javadoc
1.80 + static class CountNodes extends TreeScanner<Integer,Void> {
1.81 + @Override
1.82 + public Integer scan(Tree node, Void p) {
1.83 + Integer n = super.scan(node, p);
1.84 + return (n == null ? 0 : n) + 1;
1.85 + }
1.86 + @Override
1.87 + public Integer reduce(Integer r1, Integer r2) {
1.88 + return (r1 == null ? 0 : r1) + (r2 == null ? 0 : r2);
1.89 + }
1.90 + }
1.91 +
1.92 + // example from TreeScanner javadoc
1.93 + static class CountIdentifiers extends TreeScanner<Integer,Void> {
1.94 + @Override
1.95 + public Integer visitIdentifier(IdentifierTree node, Void p) {
1.96 + return 1;
1.97 + }
1.98 + @Override
1.99 + public Integer reduce(Integer r1, Integer r2) {
1.100 + return (r1 == null ? 0 : r1) + (r2 == null ? 0 : r2);
1.101 + }
1.102 + }
1.103 +}
