Thu, 03 Feb 2011 09:36:28 +0000
5017953: spurious cascaded diagnostics when name not found
Summary: when an operator is applied to one or more erroneous operands, spurious diagnostics are generated
Reviewed-by: jjg
1 /*
2 * Copyright (c) 2011, 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 6993305
27 * @summary starting position of a method without modifiers and with type parameters is incorrect
28 */
30 import java.io.File;
31 import javax.tools.JavaFileObject;
32 import javax.tools.StandardJavaFileManager;
34 import com.sun.source.tree.CompilationUnitTree;
35 import com.sun.source.tree.MethodTree;
36 import com.sun.source.util.JavacTask;
37 import com.sun.source.util.SourcePositions;
38 import com.sun.source.util.TreeScanner;
39 import com.sun.source.util.Trees;
40 import com.sun.tools.javac.api.JavacTool;
41 import java.io.IOException;
43 /*
44 * Test verifies the starting position of all methods by computing the start position
45 * of each method as the first non-white character on the first line containing
46 * (" " + methodName + "("), and then comparing this value against the reported
47 * value in the SourcePositions table.
48 */
49 public class T6993305 {
50 <T> void test1(T t) { } // this is the primary case to be tested
51 public <T> void test2(T t) { }
52 @Deprecated <T> void test3(T t) { }
54 public static void main(String... args) throws Exception {
55 new T6993305().run();
56 }
58 void run() throws Exception {
59 File testSrc = new File(System.getProperty("test.src"));
61 JavacTool tool = JavacTool.create();
62 StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);
64 File f = new File(testSrc, T6993305.class.getSimpleName() + ".java");
65 Iterable<? extends JavaFileObject> fos = fm.getJavaFileObjects(f);
66 JavacTask task = tool.getTask(null, fm, null, null, null, fos);
67 Iterable<? extends CompilationUnitTree> cus = task.parse();
69 TestScanner s = new TestScanner();
70 s.scan(cus, task);
72 if (errors > 0)
73 throw new Exception(errors + " errors occurred");
74 }
76 void error(String msg) {
77 System.err.println("Error: " + msg);
78 errors++;
79 }
81 int errors;
83 class TestScanner extends TreeScanner<Void, JavacTask> {
84 CompilationUnitTree cu;
85 SourcePositions sourcePositions;
86 String source;
88 void show(String label, int pos) {
89 System.err.println(label + ": " +
90 source.substring(pos, Math.min(source.length(), pos + 10)));
91 }
93 @Override public Void visitCompilationUnit(CompilationUnitTree tree, JavacTask task) {
94 cu = tree;
95 Trees trees = Trees.instance(task);
96 sourcePositions = trees.getSourcePositions();
97 try {
98 source = String.valueOf(tree.getSourceFile().getCharContent(true));
99 } catch (IOException e) {
100 throw new Error(e);
101 }
102 return super.visitCompilationUnit(tree, task);
103 }
105 // this is the core of the test
106 @Override public Void visitMethod(MethodTree tree, JavacTask task) {
107 String name = String.valueOf(tree.getName());
108 int pos = source.indexOf(" " + name + "(");
109 while (source.charAt(pos - 1) != '\n') pos--;
110 while (source.charAt(pos) == ' ') pos++;
111 int expectedStart = pos;
112 int reportedStart = (int) sourcePositions.getStartPosition(cu, tree);
113 System.err.println("Method " + name
114 + " expectedStart:" + expectedStart
115 + " reportedStart:" + reportedStart);
116 if (expectedStart != reportedStart) {
117 error("Unexpected value for " + name);
118 show("expected", expectedStart);
119 show("reported", reportedStart);
120 }
121 return super.visitMethod(tree, task);
122 }
123 }
124 }