1 /*
2 * Copyright (c) 2009, 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 import java.io.*;
25 import com.sun.tools.classfile.*;
26
27 /*
28 * @test Wildcards
29 * @bug 6843077
30 * @summary test that annotations target wildcards get emitted to classfile
31 * @modules jdk.jdeps/com.sun.tools.classfile
32 */
33 public class Wildcards {
34 public static void main(String[] args) throws Exception {
35 new Wildcards().run();
36 }
37
38 public void run() throws Exception {
39 File javaFile = writeTestFile();
40 File classFile = compileTestFile(javaFile);
41
42 ClassFile cf = ClassFile.read(classFile);
43 test(cf);
44 for (Field f : cf.fields) {
45 test(cf, f);
46 }
47 for (Method m: cf.methods) {
48 test(cf, m);
49 }
50
51 countAnnotations();
52
53 if (errors > 0)
54 throw new Exception(errors + " errors found");
55 System.out.println("PASSED");
56 }
57
58 void test(ClassFile cf) {
59 test(cf, Attribute.RuntimeVisibleTypeAnnotations, true);
60 test(cf, Attribute.RuntimeInvisibleTypeAnnotations, false);
61 }
62
63 void test(ClassFile cf, Method m) {
64 test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);
65 test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);
66 }
67
68 void test(ClassFile cf, Field m) {
69 test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);
70 test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);
71 }
72
73 // test the result of Attributes.getIndex according to expectations
74 // encoded in the method's name
75 void test(ClassFile cf, String name, boolean visible) {
76 int index = cf.attributes.getIndex(cf.constant_pool, name);
77 if (index != -1) {
78 Attribute attr = cf.attributes.get(index);
79 assert attr instanceof RuntimeTypeAnnotations_attribute;
80 RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
81 all += tAttr.annotations.length;
82 if (visible)
83 visibles += tAttr.annotations.length;
84 else
85 invisibles += tAttr.annotations.length;
86 }
87 }
88
89 // test the result of Attributes.getIndex according to expectations
90 // encoded in the method's name
91 void test(ClassFile cf, Method m, String name, boolean visible) {
92 int index = m.attributes.getIndex(cf.constant_pool, name);
93 if (index != -1) {
94 Attribute attr = m.attributes.get(index);
95 assert attr instanceof RuntimeTypeAnnotations_attribute;
96 RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
97 all += tAttr.annotations.length;
98 if (visible)
99 visibles += tAttr.annotations.length;
100 else
101 invisibles += tAttr.annotations.length;
102 }
103 }
104
105 // test the result of Attributes.getIndex according to expectations
106 // encoded in the method's name
107 void test(ClassFile cf, Field m, String name, boolean visible) {
108 int index = m.attributes.getIndex(cf.constant_pool, name);
109 if (index != -1) {
110 Attribute attr = m.attributes.get(index);
111 assert attr instanceof RuntimeTypeAnnotations_attribute;
112 RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
113 all += tAttr.annotations.length;
114 if (visible)
115 visibles += tAttr.annotations.length;
116 else
117 invisibles += tAttr.annotations.length;
118 }
119 }
120
121 File writeTestFile() throws IOException {
122 File f = new File("Test.java");
123 PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));
124 out.println("import java.lang.annotation.*;");
125 out.println("import java.util.*;");
126 out.println("class Test { ");
127 out.println(" @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})");
128 out.println(" @interface A { }");
129
130 out.println(" List<? extends @A Number> f;");
131
132 out.println(" List<? extends @A Object> test(List<? extends @A Number> p) {");
133 out.println(" List<? extends @A Object> l;"); // not counted... gets optimized away
134 out.println(" return null;");
135 out.println(" }");
136 out.println("}");
137
138 out.close();
139 return f;
140 }
141
142 File compileTestFile(File f) {
143 int rc = com.sun.tools.javac.Main.compile(new String[] {"-g", f.getPath() });
144 if (rc != 0)
145 throw new Error("compilation failed. rc=" + rc);
146 String path = f.getPath();
147 return new File(path.substring(0, path.length() - 5) + ".class");
148 }
149
150 void countAnnotations() {
151 int expected_visibles = 0, expected_invisibles = 3;
152 int expected_all = expected_visibles + expected_invisibles;
153
154 if (expected_all != all) {
155 errors++;
156 System.err.println("expected " + expected_all
157 + " annotations but found " + all);
158 }
159
160 if (expected_visibles != visibles) {
161 errors++;
162 System.err.println("expected " + expected_visibles
163 + " visibles annotations but found " + visibles);
164 }
165
166 if (expected_invisibles != invisibles) {
167 errors++;
168 System.err.println("expected " + expected_invisibles
169 + " invisibles annotations but found " + invisibles);
170 }
171
172 }
173
174 int errors;
175 int all;
176 int visibles;
177 int invisibles;
178 }