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97 lines
3.8 KiB
Java
97 lines
3.8 KiB
Java
/*
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* Copyright (c) 2015, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import jdk.internal.classfile.*;
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import jdk.internal.classfile.attribute.*;
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import jdk.internal.classfile.constantpool.InvokeDynamicEntry;
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import jdk.internal.classfile.constantpool.MethodHandleEntry;
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import jdk.internal.classfile.instruction.InvokeDynamicInstruction;
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import java.io.File;
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/*
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* @test
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* @bug 8148483 8151516 8151223
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* @summary Test that StringConcat is working for JDK >= 9
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* @modules java.base/jdk.internal.classfile
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* java.base/jdk.internal.classfile.attribute
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* java.base/jdk.internal.classfile.constantpool
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* java.base/jdk.internal.classfile.instruction
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* java.base/jdk.internal.classfile.components
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* java.base/jdk.internal.classfile.impl
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*
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* @clean *
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* @compile -source 8 -target 8 TestIndyStringConcat.java
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* @run main TestIndyStringConcat false
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*
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* @clean *
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* @compile -XDstringConcat=inline TestIndyStringConcat.java
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* @run main TestIndyStringConcat false
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*
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* @clean *
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* @compile -XDstringConcat=indy TestIndyStringConcat.java
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* @run main TestIndyStringConcat true
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*
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* @clean *
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* @compile -XDstringConcat=indyWithConstants TestIndyStringConcat.java
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* @run main TestIndyStringConcat true
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*/
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public class TestIndyStringConcat {
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static String other;
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public static String test() {
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return "Foo" + other;
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}
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public static void main(String[] args) throws Exception {
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boolean expected = Boolean.parseBoolean(args[0]);
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boolean actual = hasStringConcatFactoryCall("test");
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if (expected != actual) {
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throw new AssertionError("expected = " + expected + ", actual = " + actual);
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}
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}
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public static boolean hasStringConcatFactoryCall(String methodName) throws Exception {
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ClassModel classFile = Classfile.of().parse(new File(System.getProperty("test.classes", "."),
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TestIndyStringConcat.class.getName() + ".class").toPath());
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for (MethodModel method : classFile.methods()) {
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if (method.methodName().equalsString(methodName)) {
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CodeAttribute code = method.findAttribute(Attributes.CODE).orElseThrow();
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for (CodeElement i : code.elementList()) {
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if (i instanceof InvokeDynamicInstruction) {
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InvokeDynamicInstruction indy = (InvokeDynamicInstruction) i;
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BootstrapMethodEntry bsmSpec = indy.invokedynamic().bootstrap();
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MethodHandleEntry bsmInfo = bsmSpec.bootstrapMethod();
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if (bsmInfo.reference().owner().asInternalName().equals("java/lang/invoke/StringConcatFactory")) {
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return true;
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}
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}
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}
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}
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}
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return false;
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}
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}
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