1 /* |
1 /* |
2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
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. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
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 |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. |
7 * published by the Free Software Foundation. |
21 * questions. |
21 * questions. |
22 */ |
22 */ |
23 |
23 |
24 /* |
24 /* |
25 * @test |
25 * @test |
26 * @bug 8186046 |
26 * @bug 8186046 8195694 |
27 * @summary Test dynamic constant bootstraps |
27 * @summary Test dynamic constant bootstraps |
28 * @library /lib/testlibrary/bytecode /java/lang/invoke/common |
28 * @library /lib/testlibrary/bytecode /java/lang/invoke/common |
29 * @build jdk.experimental.bytecode.BasicClassBuilder test.java.lang.invoke.lib.InstructionHelper |
29 * @build jdk.experimental.bytecode.BasicClassBuilder test.java.lang.invoke.lib.InstructionHelper |
30 * @run testng ConstantBootstrapsTest |
30 * @run testng ConstantBootstrapsTest |
31 * @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 ConstantBootstrapsTest |
31 * @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 ConstantBootstrapsTest |
41 import java.lang.invoke.MethodHandles; |
41 import java.lang.invoke.MethodHandles; |
42 import java.lang.invoke.MethodType; |
42 import java.lang.invoke.MethodType; |
43 import java.lang.invoke.VarHandle; |
43 import java.lang.invoke.VarHandle; |
44 import java.lang.invoke.WrongMethodTypeException; |
44 import java.lang.invoke.WrongMethodTypeException; |
45 import java.math.BigInteger; |
45 import java.math.BigInteger; |
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46 import java.util.Collection; |
46 import java.util.List; |
47 import java.util.List; |
47 import java.util.Map; |
48 import java.util.Map; |
48 |
49 |
49 import static org.testng.Assert.assertEquals; |
50 import static org.testng.Assert.assertEquals; |
50 import static org.testng.Assert.assertNull; |
51 import static org.testng.Assert.assertNull; |
187 S.add("42"); |
188 S.add("42"); |
188 }); |
189 }); |
189 assertEquals(handle.invoke(), 42); |
190 assertEquals(handle.invoke(), 42); |
190 } |
191 } |
191 |
192 |
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193 public void testInvokeAsTypeVariableArity() throws Throwable { |
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194 // The constant type is Collection but the invoke return type is List |
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195 var handle = InstructionHelper.ldcDynamicConstant( |
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196 L, "_", Collection.class, |
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197 ConstantBootstraps.class, "invoke", lookupMT(Object.class, MethodHandle.class, Object[].class), |
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198 S -> { |
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199 S.add("", (P, Z) -> { |
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200 return P.putHandle(MethodHandleInfo.REF_invokeStatic, "java/util/List", "of", |
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201 MethodType.methodType(List.class, Object[].class).toMethodDescriptorString(), |
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202 true); |
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203 }); |
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204 S.add(1).add(2).add(3).add(4); |
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205 }); |
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206 assertEquals(handle.invoke(), List.of(1, 2, 3, 4)); |
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207 } |
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208 |
192 @Test(expectedExceptions = ClassCastException.class) |
209 @Test(expectedExceptions = ClassCastException.class) |
193 public void testInvokeAsTypeClassCast() throws Throwable { |
210 public void testInvokeAsTypeClassCast() throws Throwable { |
194 ConstantBootstraps.invoke(MethodHandles.lookup(), "_", String.class, |
211 ConstantBootstraps.invoke(MethodHandles.lookup(), "_", String.class, |
195 MethodHandles.lookup().findStatic(Integer.class, "valueOf", MethodType.methodType(Integer.class, String.class)), |
212 MethodHandles.lookup().findStatic(Integer.class, "valueOf", MethodType.methodType(Integer.class, String.class)), |
196 "42"); |
213 "42"); |