105 lines
3.9 KiB
Java
105 lines
3.9 KiB
Java
/*
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* Copyright (c) 2015, 2024, 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.test.lib.compiler.CompilerUtils;
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import toolbox.ToolBox;
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import java.lang.classfile.BootstrapMethodEntry;
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import java.lang.classfile.ClassFile;
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import java.lang.classfile.ClassModel;
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import java.lang.classfile.CodeElement;
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import java.lang.classfile.CodeModel;
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import java.lang.classfile.MethodModel;
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import java.lang.classfile.constantpool.MethodHandleEntry;
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import java.lang.classfile.instruction.InvokeDynamicInstruction;
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import java.nio.file.Path;
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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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* @library /tools/lib /test/lib
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* @enablePreview
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* @run main TestIndyStringConcat
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*/
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public class TestIndyStringConcat {
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private static final String SOURCE = """
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public class IndyStringConcat {
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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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}
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""";
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public static void main(String[] args) throws Exception {
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Path src = Path.of("src");
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ToolBox toolBox = new ToolBox();
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toolBox.writeJavaFiles(src, SOURCE);
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int errors = 0;
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errors += test(false, "java8", "-source", "8", "-target", "8");
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errors += test(false, "inline", "-XDstringConcat=inline");
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errors += test(true, "indy", "-XDstringConcat=indy");
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errors += test(true, "indyWithConstants", "-XDstringConcat=indyWithConstants");
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if (errors > 0) {
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throw new AssertionError(errors + " cases failed");
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}
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}
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public static int test(boolean expected, String label, String... args) throws Exception {
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Path src = Path.of("src");
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Path out = Path.of(label);
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CompilerUtils.compile(src, out, args);
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if (hasStringConcatFactoryCall(out.resolve("IndyStringConcat.class"), "test") != expected) {
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System.err.println("Expected " + expected + " failed for case " + label);
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return 1;
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}
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return 0;
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}
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public static boolean hasStringConcatFactoryCall(Path file, String methodName) throws Exception {
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ClassModel classFile = ClassFile.of().parse(file);
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for (MethodModel method : classFile.methods()) {
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if (method.methodName().equalsString(methodName)) {
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CodeModel code = method.code().orElseThrow();
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for (CodeElement i : code.elementList()) {
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if (i instanceof InvokeDynamicInstruction indy) {
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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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