Mon, 03 May 2010 17:12:59 -0700
6943289: Project Coin: Improved Exception Handling for Java (aka 'multicatch')
Reviewed-by: jjg, darcy
1 /*
2 * Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
24 /*
25 * @test
26 * @bug 6439826 6411930 6380018 6392177
27 * @summary Exception issuing Diagnostic while processing generated errant code
28 */
30 import java.io.*;
31 import java.util.*;
32 import javax.annotation.processing.*;
33 import javax.lang.model.*;
34 import javax.lang.model.element.*;
35 import javax.tools.*;
36 import com.sun.source.util.*;
37 import com.sun.tools.javac.api.*;
38 import static javax.lang.model.util.ElementFilter.*;
41 @SupportedAnnotationTypes("*")
42 public class T6439826 extends AbstractProcessor {
43 public static void main(String... args) {
44 String testSrc = System.getProperty("test.src", ".");
45 String testClasses = System.getProperty("test.classes");
46 JavacTool tool = JavacTool.create();
47 MyDiagListener dl = new MyDiagListener();
48 StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, null);
49 Iterable<? extends JavaFileObject> files =
50 fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T6439826.class.getName()+".java")));
51 Iterable<String> opts = Arrays.asList("-source","1.6",
52 "-proc:only",
53 "-processor", "T6439826",
54 "-processorpath", testClasses);
55 StringWriter out = new StringWriter();
56 JavacTask task = tool.getTask(out, fm, dl, opts, null, files);
57 task.call();
58 String s = out.toString();
59 System.err.print(s);
60 // Expect the following 2 diagnostics, and no output to log
61 // Foo.java:1: illegal character: \35
62 // Foo.java:1: reached end of file while parsing
63 System.err.println(dl.count + " diagnostics; " + s.length() + " characters");
64 if (dl.count != 2 || s.length() != 0)
65 throw new AssertionError("unexpected output from compiler");
66 }
68 public boolean process(Set<? extends TypeElement> annotations,
69 RoundEnvironment roundEnv) {
70 Set<? extends TypeElement> elems = typesIn(roundEnv.getRootElements());
71 for (TypeElement e: elems) {
72 if (e.getSimpleName().toString().equals(T6439826.class.getName()))
73 writeBadFile();
74 }
75 return false;
76 }
78 @Override
79 public SourceVersion getSupportedSourceVersion() {
80 return SourceVersion.latest();
81 }
83 private void writeBadFile() {
84 Filer filer = processingEnv.getFiler();
85 Messager messager = processingEnv.getMessager();
86 try {
87 Writer out = filer.createSourceFile("Foo").openWriter();
88 out.write("class Foo #"); // write a file that generates a scanner error
89 out.close();
90 } catch (IOException e) {
91 messager.printMessage(Diagnostic.Kind.ERROR, e.toString());
92 }
93 }
95 static class MyDiagListener implements DiagnosticListener {
96 public void report(Diagnostic d) {
97 System.err.println(d);
98 count++;
99 }
101 public int count;
102 }
103 }