Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/api/T6392782.java
test/tools/javac/api/T6392782.java
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| 1 /* | |
| 2 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 | |
| 24 /* | |
| 25 * @test | |
| 26 * @bug 6392782 | |
| 27 * @summary TreeScanner.visitImport returns null, not result of nested scan | |
| 28 */ | |
| 29 | |
| 30 import java.io.*; | |
| 31 import java.util.*; | |
| 32 import javax.tools.*; | |
| 33 import com.sun.source.tree.*; | |
| 34 import com.sun.source.util.*; | |
| 35 import com.sun.tools.javac.api.*; | |
| 36 | |
| 37 public class T6392782 { | |
| 38 public static void main(String... args) throws IOException { | |
| 39 String testSrc = System.getProperty("test.src", "."); | |
| 40 JavacTool tool = JavacTool.create(); | |
| 41 StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null); | |
| 42 Iterable<? extends JavaFileObject> files = | |
| 43 fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T6392782.class.getName()+".java"))); | |
| 44 JavacTask task = tool.getTask(null, fm, null, null, null, files); | |
| 45 Iterable<? extends Tree> trees = task.parse(); | |
| 46 TreeScanner<Integer,Void> scanner = new MyScanner(); | |
| 47 check(scanner, 6, scanner.scan(trees, null)); | |
| 48 | |
| 49 CountNodes nodeCounter = new CountNodes(); | |
| 50 // 359 nodes with the regular parser; 360 nodes with EndPosParser | |
| 51 // We automatically switch to EndPosParser when calling JavacTask.parse() | |
| 52 check(nodeCounter, 360, nodeCounter.scan(trees, null)); | |
| 53 | |
| 54 CountIdentifiers idCounter = new CountIdentifiers(); | |
| 55 check(idCounter, 107, idCounter.scan(trees, null)); | |
| 56 } | |
| 57 | |
| 58 private static void check(TreeScanner<?,?> scanner, int expect, int found) { | |
| 59 if (found != expect) | |
| 60 throw new AssertionError(scanner.getClass().getName() + ": expected: " + expect + " found: " + found); | |
| 61 } | |
| 62 | |
| 63 static class MyScanner extends TreeScanner<Integer,Void> { | |
| 64 @Override | |
| 65 public Integer visitImport(ImportTree tree, Void ignore) { | |
| 66 //System.err.println(tree); | |
| 67 return 1; | |
| 68 } | |
| 69 | |
| 70 @Override | |
| 71 public Integer reduce(Integer i1, Integer i2) { | |
| 72 return (i1 == null ? 0 : i1) + (i2 == null ? 0 : i2); | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 static class CountNodes extends TreeScanner<Integer,Void> { | |
| 77 @Override | |
| 78 public Integer scan(Tree node, Void p) { | |
| 79 if (node == null) | |
| 80 return 0; | |
| 81 Integer n = super.scan(node, p); | |
| 82 return (n == null ? 0 : n) + 1; | |
| 83 } | |
| 84 @Override | |
| 85 public Integer reduce(Integer r1, Integer r2) { | |
| 86 return (r1 == null ? 0 : r1) + (r2 == null ? 0 : r2); | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 // example from TreeScanner javadoc | |
| 91 static class CountIdentifiers extends TreeScanner<Integer,Void> { | |
| 92 @Override | |
| 93 public Integer visitIdentifier(IdentifierTree node, Void p) { | |
| 94 return 1; | |
| 95 } | |
| 96 @Override | |
| 97 public Integer reduce(Integer r1, Integer r2) { | |
| 98 return (r1 == null ? 0 : r1) + (r2 == null ? 0 : r2); | |
| 99 } | |
| 100 } | |
| 101 } |
