1 /*
2 * Copyright (c) 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 8057919
26 * @summary Class.getSimpleName() should work for non-JLS compliant class names
27 */
28 import jdk.internal.org.objectweb.asm.*;
29 import static jdk.internal.org.objectweb.asm.Opcodes.*;
30
31 public class GetSimpleNameTest {
32 static class NestedClass {}
33 class InnerClass {}
34
35 static Class<?> f1() {
36 class LocalClass {}
37 return LocalClass.class;
38 }
39
40 public static void main(String[] args) throws Exception {
41 assertEquals(NestedClass.class.getSimpleName(), "NestedClass");
42 assertEquals( InnerClass.class.getSimpleName(), "InnerClass");
43 assertEquals( f1().getSimpleName(), "LocalClass");
44
45 java.io.Serializable anon = new java.io.Serializable() {};
46 assertEquals(anon.getClass().getSimpleName(), "");
47
48 // Java class names, prepended enclosing class name.
49 testNested("p.Outer$Nested", "p.Outer", "Nested");
50 testInner( "p.Outer$Inner", "p.Inner", "Inner");
51 testLocal( "p.Outer$1Local", "p.Outer", "Local");
52 testAnon( "p.Outer$1", "p.Outer", "");
53
54 // Non-Java class names, prepended enclosing class name.
55 testNested("p.$C1$Nested", "p.$C1$", "Nested");
56 testInner( "p.$C1$Inner", "p.$C1$", "Inner");
57 testLocal( "p.$C1$Local", "p.$C1$", "Local");
58 testAnon( "p.$C1$1", "p.$C1$", "");
59
60 // Non-Java class names, unrelated class names.
61 testNested("p1.$Nested$", "p2.$C1$", "Nested");
62 testInner( "p1.$Inner$", "p2.$C1$", "Inner");
63 testLocal( "p1.$Local$", "p2.$C1$", "Local");
64 testAnon( "p1.$anon$", "p2.$C1$", "");
65 }
66
67 static void testNested(String innerName, String outerName, String simpleName) throws Exception {
68 BytecodeGenerator bg = new BytecodeGenerator(innerName, outerName, simpleName);
69 CustomCL cl = new CustomCL(innerName, outerName, bg.getNestedClasses(true), bg.getNestedClasses(false));
70 assertEquals(cl.loadClass(innerName).getSimpleName(), simpleName);
71 }
72
73 static void testInner(String innerName, String outerName, String simpleName) throws Exception {
74 BytecodeGenerator bg = new BytecodeGenerator(innerName, outerName, simpleName);
75 CustomCL cl = new CustomCL(innerName, outerName, bg.getInnerClasses(true), bg.getInnerClasses(false));
76 assertEquals(cl.loadClass(innerName).getSimpleName(), simpleName);
77 }
78
79 static void testLocal(String innerName, String outerName, String simpleName) throws Exception {
80 BytecodeGenerator bg = new BytecodeGenerator(innerName, outerName, simpleName);
81 CustomCL cl = new CustomCL(innerName, outerName, bg.getLocalClasses(true), bg.getLocalClasses(false));
82 assertEquals(cl.loadClass(innerName).getSimpleName(), simpleName);
83 }
84
85 static void testAnon(String innerName, String outerName, String simpleName) throws Exception {
86 BytecodeGenerator bg = new BytecodeGenerator(innerName, outerName, simpleName);
87 CustomCL cl = new CustomCL(innerName, outerName, bg.getAnonymousClasses(true), bg.getAnonymousClasses(false));
88 assertEquals(cl.loadClass(innerName).getSimpleName(), simpleName);
89 }
90
91 static void assertEquals(Object o1, Object o2) {
92 if (!java.util.Objects.equals(o1, o2)) {
93 throw new AssertionError(o1 + " != " + o2);
94 }
95 }
96
97 static class CustomCL extends ClassLoader {
98 final String innerName;
99 final String outerName;
100
101 final byte[] innerClassFile;
102 final byte[] outerClassFile;
103
104 CustomCL(String innerName, String outerName, byte[] innerClassFile, byte[] outerClassFile) {
105 this.innerName = innerName;
106 this.outerName = outerName;
107 this.innerClassFile = innerClassFile;
108 this.outerClassFile = outerClassFile;
109 }
110 @Override
111 protected Class<?> findClass(String name) throws ClassNotFoundException {
112 if (innerName.equals(name)) {
113 return defineClass(innerName, innerClassFile, 0, innerClassFile.length);
114 } else if (outerName.equals(name)) {
115 return defineClass(outerName, outerClassFile, 0, outerClassFile.length);
116 } else {
117 throw new ClassNotFoundException(name);
118 }
119 }
120 }
121
122 static class BytecodeGenerator {
123 final String innerName;
124 final String outerName;
125 final String simpleName;
126
127 BytecodeGenerator(String innerName, String outerName, String simpleName) {
128 this.innerName = intl(innerName);
129 this.outerName = intl(outerName);
130 this.simpleName = simpleName;
131 }
132
133 static String intl(String name) { return name.replace('.', '/'); }
134
135 static void makeDefaultCtor(ClassWriter cw) {
136 MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
137 mv.visitCode();
138 mv.visitVarInsn(ALOAD, 0);
139 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
140 mv.visitInsn(RETURN);
141 mv.visitMaxs(1, 1);
142 mv.visitEnd();
143 }
144
145 void makeCtxk(ClassWriter cw, boolean isInner) {
146 if (isInner) {
147 cw.visitOuterClass(outerName, "f", "()V");
148 } else {
149 MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "f", "()V", null, null);
150 mv.visitCode();
151 mv.visitInsn(RETURN);
152 mv.visitMaxs(0, 0);
153 mv.visitEnd();
154 }
155 }
156
157 byte[] getNestedClasses(boolean isInner) {
158 String name = (isInner ? innerName : outerName);
159 ClassWriter cw = new ClassWriter(0);
160 cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, name, null, "java/lang/Object", null);
161
162 cw.visitInnerClass(innerName, outerName, simpleName, ACC_PUBLIC | ACC_STATIC);
163
164 makeDefaultCtor(cw);
165 cw.visitEnd();
166 return cw.toByteArray();
167 }
168
169 byte[] getInnerClasses(boolean isInner) {
170 String name = (isInner ? innerName : outerName);
171 ClassWriter cw = new ClassWriter(0);
172 cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, name, null, "java/lang/Object", null);
173
174 cw.visitInnerClass(innerName, outerName, simpleName, ACC_PUBLIC);
175
176 makeDefaultCtor(cw);
177 cw.visitEnd();
178 return cw.toByteArray();
179 }
180
181 byte[] getLocalClasses(boolean isInner) {
182 String name = (isInner ? innerName : outerName);
183 ClassWriter cw = new ClassWriter(0);
184 cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, name, null, "java/lang/Object", null);
185
186 cw.visitInnerClass(innerName, null, simpleName, ACC_PUBLIC | ACC_STATIC);
187 makeCtxk(cw, isInner);
188
189 makeDefaultCtor(cw);
190 cw.visitEnd();
191 return cw.toByteArray();
192 }
193
194 byte[] getAnonymousClasses(boolean isInner) {
195 String name = (isInner ? innerName : outerName);
196 ClassWriter cw = new ClassWriter(0);
197 cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, name, null, "java/lang/Object", null);
198
199 cw.visitInnerClass(innerName, null, null, ACC_PUBLIC | ACC_STATIC);
200 makeCtxk(cw, isInner);
201
202 makeDefaultCtor(cw);
203 cw.visitEnd();
204 return cw.toByteArray();
205 }
206 }
207 }