1 /*
2 * Copyright (c) 2017, 2018, 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 /*
25 * @test
26 * @bug 8186046
27 * @summary Test nested dynamic constant declarations that are recursive
28 * @compile CondyNestedTest_Code.jcod
29 * @run testng CondyNestedTest
30 */
31
32 import org.testng.Assert;
33 import org.testng.annotations.BeforeClass;
34 import org.testng.annotations.Test;
35
36 import java.lang.reflect.InvocationTargetException;
37 import java.lang.reflect.Method;
38
39 public class CondyNestedTest {
40
41 static final Class[] THROWABLES = {InvocationTargetException.class, StackOverflowError.class};
42
43 Class<?> c;
44
45 // Add the following annotations to the test description if uncommenting the
46 // following code
47 //
48 // * @library /lib/testlibrary/bytecode
49 // * @build jdk.experimental.bytecode.BasicClassBuilder
50 //
51 // static final MethodHandles.Lookup L = MethodHandles.lookup();
52 //
53 // /**
54 // * Generate class file bytes for a class named CondyNestedTest_Code
55 // * whose bytes are converted to a jcod file:
56 // *
57 // * java -jar asmtools.jar jdec CondyNestedTest_Code.class >
58 // * CondyNestedTest_Code.jcod
59 // *
60 // * which was then edited so that dynamic constant declarations are
61 // * recursive both for an ldc or invokedynamic (specifically declaring a
62 // * BSM+attributes whose static argument is a dynamic constant
63 // * that refers to the same BSM+attributes).
64 // */
65 // public static byte[] generator() throws Exception {
66 // String genClassName = L.lookupClass().getSimpleName() + "_Code";
67 // String bsmDescriptor = MethodType.methodType(Object.class, MethodHandles.Lookup.class, String.class, Object.class, Object.class).toMethodDescriptorString();
68 // String bsmIndyDescriptor = MethodType.methodType(CallSite.class, MethodHandles.Lookup.class, String.class, Object.class, Object.class).toMethodDescriptorString();
69 //
70 // byte[] byteArray = new BasicClassBuilder(genClassName, 55, 0)
71 // .withSuperclass("java/lang/Object")
72 // .withMethod("<init>", "()V", M ->
73 // M.withFlags(Flag.ACC_PUBLIC)
74 // .withCode(TypedCodeBuilder::new, C ->
75 // C.aload_0().invokespecial("java/lang/Object", "<init>", "()V", false).return_()
76 // ))
77 // .withMethod("main", "([Ljava/lang/String;)V", M ->
78 // M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
79 // .withCode(TypedCodeBuilder::new, C -> {
80 // C.aload_0().iconst_0().aaload();
81 // C.invokevirtual("java/lang/String", "intern", "()Ljava/lang/String;", false);
82 // C.astore_1();
83 //
84 // C.aload_1();
85 // C.ldc("condy_bsm_condy_bsm");
86 // C.ifcmp(TypeTag.A, MacroCodeBuilder.CondKind.NE, "CASE1");
87 // C.invokestatic(genClassName, "condy_bsm_condy_bsm", "()Ljava/lang/Object;", false).return_();
88 //
89 // C.label("CASE1");
90 // C.aload_1();
91 // C.ldc("indy_bsmIndy_condy_bsm");
92 // C.ifcmp(TypeTag.A, MacroCodeBuilder.CondKind.NE, "CASE2");
93 // C.invokestatic(genClassName, "indy_bsmIndy_condy_bsm", "()Ljava/lang/Object;", false).return_();
94 //
95 // C.label("CASE2");
96 // C.aload_1();
97 // C.ldc("indy_bsm_condy_bsm");
98 // C.ifcmp(TypeTag.A, MacroCodeBuilder.CondKind.NE, "CASE3");
99 // C.invokestatic(genClassName, "indy_bsm_condy_bsm", "()Ljava/lang/Object;", false).return_();
100 //
101 // C.label("CASE3");
102 // C.return_();
103 // }))
104 // .withMethod("bsm", bsmDescriptor, M ->
105 // M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
106 // .withCode(TypedCodeBuilder::new, C -> {
107 // C.aload_2();
108 // C.instanceof_("java/lang/invoke/MethodType");
109 // C.iconst_0();
110 // C.ifcmp(TypeTag.I, MacroCodeBuilder.CondKind.EQ, "CONDY");
111 // C.new_("java/lang/invoke/ConstantCallSite").dup();
112 // C.ldc("java/lang/String", PoolHelper::putClass);
113 // C.aload_1();
114 // C.invokestatic("java/lang/invoke/MethodHandles", "constant", "(Ljava/lang/Class;Ljava/lang/Object;)Ljava/lang/invoke/MethodHandle;", false);
115 // C.invokespecial("java/lang/invoke/ConstantCallSite", "<init>", "(Ljava/lang/invoke/MethodHandle;)V", false);
116 // C.areturn();
117 // C.label("CONDY");
118 // C.aload_1().areturn();
119 // }))
120 // .withMethod("bsmIndy", bsmIndyDescriptor, M ->
121 // M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
122 // .withCode(TypedCodeBuilder::new, C -> {
123 // C.new_("java/lang/invoke/ConstantCallSite").dup();
124 // C.ldc("java/lang/String", PoolHelper::putClass);
125 // C.aload_1();
126 // C.invokestatic("java/lang/invoke/MethodHandles", "constant", "(Ljava/lang/Class;Ljava/lang/Object;)Ljava/lang/invoke/MethodHandle;", false);
127 // C.invokespecial("java/lang/invoke/ConstantCallSite", "<init>", "(Ljava/lang/invoke/MethodHandle;)V", false);
128 // C.areturn();
129 // }))
130 // .withMethod("condy_bsm_condy_bsm", "()Ljava/lang/Object;", M ->
131 // M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
132 // .withCode(TypedCodeBuilder::new, C ->
133 // C.ldc("name", "Ljava/lang/String;", genClassName, "bsm", bsmDescriptor,
134 // S -> S.add(null, (P, v) -> {
135 // return P.putDynamicConstant("name", "Ljava/lang/String;", genClassName, "bsm", bsmDescriptor,
136 // S2 -> S2.add("DUMMY_ARG", PoolHelper::putString));
137 // }))
138 // .areturn()))
139 // .withMethod("indy_bsmIndy_condy_bsm", "()Ljava/lang/Object;", M ->
140 // M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
141 // .withCode(TypedCodeBuilder::new, C ->
142 // C.invokedynamic("name", "()Ljava/lang/String;", genClassName, "bsmIndy", bsmIndyDescriptor,
143 // S -> S.add(null, (P, v) -> {
144 // return P.putDynamicConstant("name", "Ljava/lang/String;", genClassName, "bsm", bsmDescriptor,
145 // S2 -> S2.add("DUMMY_ARG", PoolHelper::putString));
146 // }))
147 // .areturn()))
148 // .withMethod("indy_bsm_condy_bsm", "()Ljava/lang/Object;", M ->
149 // M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
150 // .withCode(TypedCodeBuilder::new, C ->
151 // C.invokedynamic("name", "()Ljava/lang/String;", genClassName, "bsm", bsmDescriptor,
152 // S -> S.add(null, (P, v) -> {
153 // return P.putDynamicConstant("name", "Ljava/lang/String;", genClassName, "bsm", bsmDescriptor,
154 // S2 -> S2.add("DUMMY_ARG", PoolHelper::putString));
155 // }))
156 // .areturn()))
157 // .build();
158 //
159 // File f = new File(genClassName + ".class");
160 // if (f.getParentFile() != null) {
161 // f.getParentFile().mkdirs();
162 // }
163 // new FileOutputStream(f).write(byteArray);
164 // return byteArray;
165 //
166 // }
167
168 static void test(Method m, Class<? extends Throwable>... ts) {
169 Throwable caught = null;
170 try {
171 m.invoke(null);
172 }
173 catch (Throwable t) {
174 caught = t;
175 }
176
177 if (caught == null) {
178 Assert.fail("Throwable expected");
179 }
180
181 String actualMessage = null;
182 for (int i = 0; i < ts.length; i++) {
183 actualMessage = caught.getMessage();
184 Assert.assertNotNull(caught);
185 Assert.assertTrue(ts[i].isAssignableFrom(caught.getClass()));
186 caught = caught.getCause();
187 }
188 }
189
190 @BeforeClass
191 public void findClass() throws Exception {
192 c = Class.forName("CondyNestedTest_Code");
193 }
194
195 /**
196 * Testing an ldc of a dynamic constant, C say, with a BSM whose static
197 * argument is C.
198 */
199 @Test
200 public void testCondyBsmCondyBsm() throws Exception {
201 test("condy_bsm_condy_bsm", THROWABLES);
202 }
203
204 /**
205 * Testing an invokedynamic with a BSM whose static argument is a constant
206 * dynamic, C say, with a BSM whose static argument is C.
207 */
208 @Test
209 public void testIndyBsmIndyCondyBsm() throws Exception {
210 test("indy_bsmIndy_condy_bsm", THROWABLES);
211 }
212
213 /**
214 * Testing an invokedynamic with a BSM, B say, whose static argument is
215 * a dynamic constant, C say, that uses BSM B.
216 */
217 @Test
218 public void testIndyBsmCondyBsm() throws Exception {
219 test("indy_bsm_condy_bsm", THROWABLES);
220 }
221
222 void test(String methodName, Class<? extends Throwable>... ts) throws Exception {
223 Method m = c.getMethod(methodName);
224 m.setAccessible(true);
225 test(m, ts);
226 }
227
228 }