jdk8-mips64-public/langtools: test/tools/javac/api/T6392782.java@0ff2bbd38f10

7033660: Update copyright year to 2011 on any files changed in 2011
Reviewed-by: dholmes

     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  */

    24 /*

    25  * @test

    26  * @bug 6392782

    27  * @summary TreeScanner.visitImport returns null, not result of nested scan

    28  */

    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.*;

    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));

    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));

    54         CountIdentifiers idCounter = new CountIdentifiers();

    55         check(idCounter, 107, idCounter.scan(trees, null));

    56     }

    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     }

    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         }

    70         @Override

    71         public Integer reduce(Integer i1, Integer i2) {

    72             return (i1 == null ? 0 : i1) + (i2 == null ? 0 : i2);

    73         }

    74     }

    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     }

    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 }

Mercurial > jdk8-mips64-public > langtools / file revision