1 /*
2  * Copyright (c) 2006, 2015, 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 6472751
27  * @summary SourcePositions.getStartPos returns incorrect value for enum constants
28  * @author Peter Ahe
29  * @modules jdk.compiler/com.sun.tools.javac.util
30  */
31 
32 import com.sun.source.tree.CompilationUnitTree;
33 import com.sun.source.tree.Tree;
34 import com.sun.source.tree.Tree.Kind;
35 import com.sun.source.util.JavacTask;
36 import com.sun.source.util.SourcePositions;
37 import com.sun.source.util.TreeScanner;
38 import com.sun.source.util.Trees;
39 import com.sun.tools.javac.util.List;
40 import java.io.IOException;
41 import java.net.URI;
42 import javax.tools.JavaCompiler;
43 import javax.tools.JavaFileObject;
44 import javax.tools.SimpleJavaFileObject;
45 import javax.tools.ToolProvider;
46 
47 public class T6472751 {
48     static class MyFileObject extends SimpleJavaFileObject {
MyFileObject()49         public MyFileObject() {
50             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
51         }
getCharContent(boolean ignoreEncodingErrors)52         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
53             return "public enum Test { ABC, DEF; }";
54         }
55     }
56     static Trees trees;
57     static SourcePositions positions;
main(String[] args)58     public static void main(String[] args) throws IOException {
59         JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
60         JavacTask task = (JavacTask) compiler.getTask(null, null, null, null, null, List.of(new MyFileObject()));
61         trees = Trees.instance(task);
62         positions = trees.getSourcePositions();
63         Iterable<? extends CompilationUnitTree> asts = task.parse();
64         for (CompilationUnitTree ast : asts) {
65             new MyVisitor().scan(ast, null);
66         }
67     }
68 
69     static class MyVisitor extends TreeScanner<Void,Void> {
70         @Override
scan(Tree node, Void ignored)71         public Void scan(Tree node, Void ignored) {
72             if (node == null)
73                 return null;
74             Kind k = node.getKind();
75             long pos = positions.getStartPosition(null,node);
76             System.out.format("%s: %s%n", k, pos);
77             if (k != Kind.MODIFIERS && pos < 0)
78                 throw new Error("unexpected position found");
79             return super.scan(node, ignored);
80         }
81     }
82 }
83