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/*
* Copyright (c) 2017, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8186046
* @summary Test nested dynamic constant declarations that are recursive
* @compile CondyNestedTest_Code.jcod
* @run testng CondyNestedTest
* @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 CondyNestedTest
*/
import org.testng.Assert;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import java.lang.invoke.MethodHandles;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class CondyNestedTest {
static final Class[] THROWABLES = {InvocationTargetException.class, StackOverflowError.class};
private static final MethodHandles.Lookup L = MethodHandles.lookup();
Class<?> c;
// static final MethodHandles.Lookup L = MethodHandles.lookup();
//
// /**
// * Generate class file bytes for a class named CondyNestedTest_Code
// * whose bytes are converted to a jcod file:
// *
// * java -jar asmtools.jar jdec CondyNestedTest_Code.class >
// * CondyNestedTest_Code.jcod
// *
// * which was then edited so that dynamic constant declarations are
// * recursive both for an ldc or invokedynamic (specifically declaring a
// * BSM+attributes whose static argument is a dynamic constant
// * that refers to the same BSM+attributes).
// */
// public static byte[] generator() throws Exception {
// String genClassName = L.lookupClass().getSimpleName() + "_Code";
// ClassDesc genClassDesc = ClassDesc.of(genClassName);
// String bsmDescriptor = MethodType.methodType(Object.class, MethodHandles.Lookup.class, String.class, Object.class,
// Object.class).toMethodDescriptorString();
// String bsmIndyDescriptor = MethodType.methodType(CallSite.class, MethodHandles.Lookup.class, String.class,
// Object.class, Object.class).toMethodDescriptorString();
// DirectMethodHandleDesc bsmMhDesc = MethodHandleDesc.of(
// DirectMethodHandleDesc.Kind.STATIC,
// genClassDesc,
// "bsm",
// bsmDescriptor
// );
// DirectMethodHandleDesc bsmIndyMhDesc = MethodHandleDesc.of(
// DirectMethodHandleDesc.Kind.STATIC,
// genClassDesc,
// "bsmIndy",
// bsmIndyDescriptor
// );
// byte[] byteArray = ClassFile.of().build(ClassDesc.of(genClassName), classBuilder -> classBuilder
// .withVersion(55, 0)
// .withSuperclass(ConstantDescs.CD_Object)
// .withMethod(ConstantDescs.INIT_NAME, ConstantDescs.MTD_void, ClassFile.ACC_PUBLIC, methodBuilder -> methodBuilder
// .withCode(codeBuilder -> codeBuilder
// .aload(0)
// .invokespecial(ConstantDescs.CD_Object, ConstantDescs.INIT_NAME, ConstantDescs.MTD_void)
// .return_()
// )
// )
// .withMethod("main", MethodTypeDesc.of(ConstantDescs.CD_void, ConstantDescs.CD_String.arrayType()),
// ClassFile.ACC_PUBLIC + ClassFile.ACC_STATIC, methodBuilder -> methodBuilder
// .withCode(codeBuilder -> {
// codeBuilder
// .aload(0)
// .iconst_0()
// .aaload()
// .invokevirtual(ConstantDescs.CD_String, "intern",
// MethodTypeDesc.of(ConstantDescs.CD_String))
// .astore(1);
// Label case1 = codeBuilder.newLabel();
// codeBuilder
// .aload(1)
// .ldc("condy_bsm_condy_bsm")
// .if_acmpne(case1)
// .invokestatic(genClassDesc, "condy_bsm_condy_bsm",
// MethodTypeDesc.of(ConstantDescs.CD_Object))
// .return_();
// Label case2 = codeBuilder.newLabel();
// codeBuilder
// .labelBinding(case1)
// .aload(1)
// .ldc("indy_bsmIndy_condy_bsm")
// .if_acmpne(case2)
// .invokestatic(genClassDesc, "indy_bsmIndy_condy_bsm",
// MethodTypeDesc.of(ConstantDescs.CD_Object))
// .return_();
// Label case3 = codeBuilder.newLabel();
// codeBuilder
// .labelBinding(case2)
// .aload(1)
// .ldc("indy_bsm_condy_bsm")
// .if_acmpne(case3)
// .invokestatic(genClassDesc, "indy_bsm_condy_bsm",
// MethodTypeDesc.of(ConstantDescs.CD_Object))
// .return_();
// codeBuilder
// .labelBinding(case3)
// .return_();
// }
// )
// )
// // bsm that when used with indy returns a call site whose target is MethodHandles.constant(String.class, name), and
// // when used with condy returns the name
// .withMethod("bsm", MethodTypeDesc.ofDescriptor(bsmDescriptor),
// ClassFile.ACC_PUBLIC + ClassFile.ACC_STATIC, methodBuilder -> methodBuilder
// .withCode(codeBuilder -> {
// codeBuilder
// .aload(2)
// .instanceOf(ConstantDescs.CD_MethodType)
// .iconst_0();
// Label condy = codeBuilder.newLabel();
// codeBuilder
// .if_acmpeq(condy)
// .new_(ClassDesc.ofDescriptor(ConstantCallSite.class.descriptorString()))
// .dup()
// .ldc(ConstantDescs.CD_String)
// .aload(1)
// .invokestatic(ConstantDescs.CD_MethodHandles, "constant",
// MethodTypeDesc.of(ConstantDescs.CD_MethodHandle, ConstantDescs.CD_Class,
// ConstantDescs.CD_Object))
// .invokespecial(ClassDesc.ofDescriptor(ConstantCallSite.class.descriptorString()),
// ConstantDescs.INIT_NAME,
// MethodTypeDesc.of(ConstantDescs.CD_void, ConstantDescs.CD_MethodHandle))
// .areturn();
// codeBuilder
// .labelBinding(condy)
// .aload(1)
// .areturn();
// }
//
// )
// )
// // an indy bsm, that returns a call site whose target is MethodHandles.constant(String.class, methodName)
// .withMethod("bsmIndy", MethodTypeDesc.ofDescriptor(bsmIndyDescriptor),
// ClassFile.ACC_PUBLIC + ClassFile.ACC_PUBLIC, methodBuilder -> methodBuilder
// .withCode(codeBuilder -> codeBuilder
// .new_(ClassDesc.ofDescriptor(ConstantCallSite.class.descriptorString()))
// .dup()
// .ldc(ConstantDescs.CD_String)
// .aload(1)
// .invokestatic(ConstantDescs.CD_MethodHandles, "constant",
// MethodTypeDesc.of(ConstantDescs.CD_MethodHandle, ConstantDescs.CD_Class,
// ConstantDescs.CD_Object))
// .invokespecial(ClassDesc.ofDescriptor(ConstantCallSite.class.descriptorString()),
// ConstantDescs.INIT_NAME,
// MethodTypeDesc.of(ConstantDescs.CD_void, ConstantDescs.CD_MethodHandle))
// .areturn()
// )
// )
// .withMethod("condy_bsm_condy_bsm", MethodTypeDesc.of(ConstantDescs.CD_Object),
// ClassFile.ACC_PUBLIC + ClassFile.ACC_STATIC, methodBuilder -> methodBuilder
// .withCode(codeBuilder -> codeBuilder
// .ldc(DynamicConstantDesc.ofNamed(
// bsmMhDesc,
// "name",
// ConstantDescs.CD_String,
// DynamicConstantDesc.ofNamed(
// bsmMhDesc,
// "name",
// ConstantDescs.CD_String,
// "DUMMY_ARG"
// )
// )
// )
// .areturn()
// )
// )
// .withMethod("indy_bsmIndy_condy_bsm", MethodTypeDesc.of(ConstantDescs.CD_Object),
// ClassFile.ACC_PUBLIC + ClassFile.ACC_STATIC, methodBuilder -> methodBuilder
// .withCode(codeBuilder -> codeBuilder
// .invokedynamic(DynamicCallSiteDesc.of(
// bsmIndyMhDesc,
// "name",
// MethodTypeDesc.of(ConstantDescs.CD_String),
// DynamicConstantDesc.ofNamed(
// bsmMhDesc,
// "name",
// ConstantDescs.CD_String,
// "DUMMY_ARG"
// )
// )
// )
// .areturn()
// )
// )
// .withMethod("indy_bsm_condy_bsm", MethodTypeDesc.of(ConstantDescs.CD_Object),
// ClassFile.ACC_PUBLIC + ClassFile.ACC_STATIC, methodBuilder -> methodBuilder
// .withCode(codeBuilder -> codeBuilder
// .invokedynamic(DynamicCallSiteDesc.of(
// bsmMhDesc,
// "name",
// MethodTypeDesc.of(ConstantDescs.CD_String),
// DynamicConstantDesc.ofNamed(
// bsmMhDesc,
// "name",
// ConstantDescs.CD_String,
// "DUMMY_ARG"
// )
// )
// )
// .areturn()
// )
// )
// );
//
// File f = new File(genClassName + ".class");
// if (f.getParentFile() != null) {
// f.getParentFile().mkdirs();
// }
// new FileOutputStream(f).write(byteArray);
// return byteArray;
// }
static void test(Method m, Class<? extends Throwable>... ts) {
Throwable caught = null;
try {
m.invoke(null);
} catch (Throwable t) {
caught = t;
}
if (caught == null) {
Assert.fail("Throwable expected");
}
String actualMessage = null;
for (int i = 0; i < ts.length; i++) {
actualMessage = caught.getMessage();
Assert.assertNotNull(caught);
Assert.assertTrue(ts[i].isAssignableFrom(caught.getClass()));
caught = caught.getCause();
}
}
@BeforeClass
public void findClass() throws Exception {
c = Class.forName("CondyNestedTest_Code");
}
/**
* Testing an ldc of a dynamic constant, C say, with a BSM whose static
* argument is C.
*/
@Test
public void testCondyBsmCondyBsm() throws Exception {
test("condy_bsm_condy_bsm", THROWABLES);
}
/**
* Testing an invokedynamic with a BSM whose static argument is a constant
* dynamic, C say, with a BSM whose static argument is C.
*/
@Test
public void testIndyBsmIndyCondyBsm() throws Exception {
test("indy_bsmIndy_condy_bsm", THROWABLES);
}
/**
* Testing an invokedynamic with a BSM, B say, whose static argument is
* a dynamic constant, C say, that uses BSM B.
*/
@Test
public void testIndyBsmCondyBsm() throws Exception {
test("indy_bsm_condy_bsm", THROWABLES);
}
void test(String methodName, Class<? extends Throwable>... ts) throws Exception {
Method m = c.getMethod(methodName);
m.setAccessible(true);
test(m, ts);
}
}
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