eaa80ad08c
8300545: Compiler Implementation for Record Patterns Co-authored-by: Aggelos Biboudis <abimpoudis@openjdk.org> Reviewed-by: vromero, mcimadamore
130 lines
5.2 KiB
Java
130 lines
5.2 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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*/
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import java.util.Objects;
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public class NestedDeconstructionPattern {
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public static void main(String... args) throws Throwable {
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new NestedDeconstructionPattern().doTestR();
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new NestedDeconstructionPattern().doTestP();
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}
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void doTestR() {
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assertEquals("AA", switchR1(new R(new A(), new A())));
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assertEquals("AB", switchR1(new R(new A(), new B())));
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assertEquals("BA", switchR1(new R(new B(), new A())));
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assertEquals("BB", switchR1(new R(new B(), new B())));
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try {
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switchR1(null);
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throw new AssertionError("Didn't get a NPE.");
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} catch (NullPointerException ex) {
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//OK
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}
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assertEquals("AA", switchR2(new R(new A(), new A())));
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assertEquals("AB", switchR2(new R(new A(), new B())));
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assertEquals("BA", switchR2(new R(new B(), new A())));
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assertEquals("BB", switchR2(new R(new B(), new B())));
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assertEquals("other", switchR2(""));
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try {
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switchR2(null);
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throw new AssertionError("Didn't get a NPE.");
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} catch (NullPointerException ex) {
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//OK
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}
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}
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String switchR1(R r) {
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return switch (r) {
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case R(A a, A b) -> a.name() + b.name();
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case R(A a, B b) -> a.name() + b.name();
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case R(B a, A b) -> a.name() + b.name();
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case R(B a, B b) -> a.name() + b.name();
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};
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}
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String switchR2(Object o) {
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return switch (o) {
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case R(A a, A b) -> a.name() + b.name();
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case R(A a, B b) -> a.name() + b.name();
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case R(B a, A b) -> a.name() + b.name();
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case R(B a, B b) -> a.name() + b.name();
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default -> "other";
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};
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}
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void doTestP() {
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assertEquals("AAAA", switchP1(new P(new R(new A(), new A()), new R(new A(), new A()))));
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}
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String switchP1(P p) {
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return switch (p) {
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case P(R(A a1, A b1), R(A a2, A b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(A a1, A b1), R(A a2, B b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(A a1, A b1), R(B a2, A b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(A a1, A b1), R(B a2, B b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(A a1, B b1), R(A a2, A b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(A a1, B b1), R(A a2, B b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(A a1, B b1), R(B a2, A b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(A a1, B b1), R(B a2, B b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(B a1, A b1), R(A a2, A b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(B a1, A b1), R(A a2, B b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(B a1, A b1), R(B a2, A b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(B a1, A b1), R(B a2, B b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(B a1, B b1), R(A a2, A b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(B a1, B b1), R(A a2, B b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(B a1, B b1), R(B a2, A b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(R(B a1, B b1), R(B a2, B b2)) -> a1.name() + b1.name()+a2.name() + b2.name();
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case P(N a, N b) -> "other";
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};
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}
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public sealed interface I {}
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public final class A implements I {
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public String name() { return "A"; }
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}
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public final class B implements I {
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public String name() { return "B"; }
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}
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public record R(I a, I b) implements N {}
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public sealed interface N {}
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public final class C implements N {
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public String name() { return "B"; }
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}
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public record P(N a, N b) {
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}
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private void assertEquals(String expected, String actual) {
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if (!Objects.equals(expected, actual)) {
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throw new AssertionError("Expected: " + expected + ", but got: " + actual);
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}
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}
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}
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