1 /*
2 * Copyright (c) 2010, 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 /* @test
25 * @bug 6917288
26 * @summary Unnamed nested class is not generated
27 * @modules jdk.compiler
28 */
29
30 import java.io.*;
31 import java.util.*;
32
33 public class T6917288 {
34 // refers to kind of reference to an anon inner class that may be generated
35 enum Kind { NONE, FALSE, TRUE, ALWAYS };
36
37 public static void main(String... args) throws Exception {
38 new T6917288().run();
39 }
40
41 void run() throws Exception {
42 for (Kind k: Kind.values()) {
43 test(k);
44 }
45
46 if (errors > 0)
47 throw new Exception(errors + " errors occurred");
48 }
49
50 /**
51 * Run a test case for Kind k.
52 */
53 void test(Kind k) throws Exception {
54 System.err.println("Test " + (++count) + ": " + k);
55 File testDir = new File("test" + count);
56 File srcDir = new File(testDir, "src");
57 srcDir.mkdirs();
58 File classesDir = new File(testDir, "classes");
59 classesDir.mkdirs();
60
61 List<String> opts = new ArrayList<String>();
62 opts.add("-d");
63 opts.add(classesDir.getPath());
64
65 File f = writeFile(srcDir, k);
66 int rc = compile(opts, f);
67 if (rc != 0) {
68 error("compilation failed: rc=" + rc);
69 return;
70 }
71
72 switch (k) {
73 case ALWAYS:
74 case TRUE:
75 check(classesDir, "Test.class", "Test$Inner.class", "Test$1.class");
76 break;
77 default:
78 check(classesDir, "Test.class", "Test$Inner.class");
79 }
80 }
81
82 /**
83 * Compile files with given options.
84 * Display any output from compiler, and return javac return code.
85 */
86 int compile(List<String> opts, File... files) {
87 List<String> args = new ArrayList<String>();
88 args.addAll(opts);
89 for (File f: files)
90 args.add(f.getPath());
91 StringWriter sw = new StringWriter();
92 PrintWriter pw = new PrintWriter(sw);
93 int rc = com.sun.tools.javac.Main.compile(args.toArray(new String[args.size()]), pw);
94 pw.close();
95 String out = sw.toString();
96 if (out.length() > 0)
97 System.err.println(out);
98 return rc;
99 }
100
101 /**
102 * Check that a directory contains the expected files.
103 */
104 void check(File dir, String... paths) {
105 Set<String> found = new TreeSet<String>(Arrays.asList(dir.list()));
106 Set<String> expect = new TreeSet<String>(Arrays.asList(paths));
107 if (found.equals(expect))
108 return;
109 for (String f: found) {
110 if (!expect.contains(f))
111 error("Unexpected file found: " + f);
112 }
113 for (String e: expect) {
114 if (!found.contains(e))
115 error("Expected file not found: " + e);
116 }
117 }
118
119 /**
120 * Write source file for test case k.
121 */
122 File writeFile(File dir, Kind k) throws Exception {
123 StringBuilder sb = new StringBuilder();
124 sb.append("public class Test {\n");
125 sb.append(" private Inner inner;\n");
126
127 // generate different cases of an anon inner class
128 if (k != Kind.NONE) {
129 sb.append(" private void m() {\n");
130 sb.append(" ");
131 switch (k) {
132 case FALSE: case TRUE:
133 sb.append("if (" + k.toString().toLowerCase() + ") ");
134 }
135 sb.append("new Runnable() { public void run() { } };\n");
136 sb.append(" }\n");
137 }
138
139 sb.append(" private void init() {\n");
140 sb.append(" inner = new Inner();\n");
141 sb.append(" }\n");
142 sb.append("\n");
143 sb.append(" private static class Inner {\n");
144 sb.append(" private Inner() {\n");
145 sb.append(" }\n");
146 sb.append(" }\n");
147 sb.append("}\n");
148
149 File f = new File(dir, "Test.java");
150 FileWriter w = new FileWriter(f);
151 w.write(sb.toString());
152 w.close();
153 return f;
154 }
155
156 /**
157 * Record an error message.
158 */
159 void error(String msg) {
160 System.err.println(msg);
161 errors++;
162 }
163
164 int count;
165 int errors;
166 }