e9bddc18ab
Co-authored-by: Brian Goetz <briangoetz@openjdk.org> Co-authored-by: Jan Lahoda <jlahoda@openjdk.org> Co-authored-by: Aggelos Biboudis <abimpoudis@openjdk.org> Reviewed-by: mcimadamore, vromero
92 lines
2.6 KiB
Java
92 lines
2.6 KiB
Java
/*
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* Copyright (c) 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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/**
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* @test
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* @compile --enable-preview -source ${jdk.version} GenericRecordDeconstructionPattern.java
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* @run main/othervm --enable-preview GenericRecordDeconstructionPattern
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*/
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import java.util.Objects;
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import java.util.function.Function;
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public class GenericRecordDeconstructionPattern {
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public static void main(String... args) throws Throwable {
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new GenericRecordDeconstructionPattern().run();
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}
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void run() {
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runTest(this::runIf);
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runTest(this::runSwitch);
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runTest(this::runSwitchExpression);
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}
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void runTest(Function<Box<String>, Integer> test) {
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Box<String> b = new Box<>(null);
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assertEquals(1, test.apply(b));
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}
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int runIf(Box<String> b) {
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if (b instanceof Box<String>(String s)) return 1;
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return -1;
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}
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int runSwitch(Box<String> b) {
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switch (b) {
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case Box<String>(String s): return 1;
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default: return -1;
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}
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}
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int runSwitchExpression(Box<String> b) {
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return switch (b) {
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case Box<String>(String s) -> 1;
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default -> -1;
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};
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}
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record Box<V>(V v) {
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}
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void assertEquals(Object expected, Object actual) {
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if (!Objects.equals(expected, actual)) {
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throw new AssertionError("Expected: " + expected + "," +
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"got: " + actual);
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}
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}
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void fail(String message) {
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throw new AssertionError(message);
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}
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public static class TestPatternFailed extends AssertionError {
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public TestPatternFailed(String message) {
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super(message);
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}
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}
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}
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