78 lines
2.5 KiB
Java
78 lines
2.5 KiB
Java
/*
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* Copyright (c) 2021, 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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* @bug 8262891 8310133
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* @summary Check errors reported for guarded patterns.
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* @compile/fail/ref=GuardsErrors.out -XDrawDiagnostics GuardsErrors.java
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*/
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//TODO: tests and error recovery for misplaced guards
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public class GuardsErrors {
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void typeTestPatternSwitchTest(Object o, int check) {
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switch (o) {
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case Integer i when i == check -> System.err.println(); //error: check is not effectivelly final
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default -> {}
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}
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check = 0;
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}
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void variablesInGuards(Object o) {
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final int i1;
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int i2 = 0;
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switch (o) {
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case Integer v when (i1 = 0) == 0 -> {}
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case Integer v when i2++ == 0 -> {}
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case Integer v when ++i2 == 0 -> {}
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case Integer v when new Predicate() {
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public boolean test() {
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final int i;
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i = 2;
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return i == 2;
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}
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}.test() -> {}
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case Integer v when v != null -> {
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v = null;
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}
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case Number v1 when v1 instanceof Integer v2 && (v2 = 0) == 0 -> {}
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default -> {}
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}
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}
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GuardsErrors(Object o) {
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switch (o) {
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case Integer v when (f = 0) == 0 -> {}
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default -> throw new RuntimeException();
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}
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}
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final int f;
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interface Predicate {
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public boolean test();
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}
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}
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