| /* |
| * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 7025809 8028543 6415644 8028544 8029942 8187951 8193291 8196551 |
| * @summary Test latest, latestSupported, underscore as keyword, etc. |
| * @author Joseph D. Darcy |
| * @modules java.compiler |
| * jdk.compiler |
| */ |
| |
| import java.util.*; |
| import javax.lang.model.SourceVersion; |
| import static javax.lang.model.SourceVersion.*; |
| |
| /** |
| * Verify latest[Supported] behavior. |
| */ |
| public class TestSourceVersion { |
| public static void main(String... args) { |
| testLatestSupported(); |
| testVersionVaryingKeywords(); |
| testRestrictedKeywords(); |
| testVar(); |
| } |
| |
| private static void testLatestSupported() { |
| SourceVersion[] values = SourceVersion.values(); |
| SourceVersion last = values[values.length - 1]; |
| SourceVersion latest = SourceVersion.latest(); |
| SourceVersion latestSupported = SourceVersion.latestSupported(); |
| |
| if (latest == last && |
| latestSupported == SourceVersion.valueOf("RELEASE_" + Runtime.version().feature()) && |
| (latest == latestSupported || (latest.ordinal() - latestSupported.ordinal() == 1)) ) |
| return; |
| else { |
| throw new RuntimeException("Unexpected release value(s) found:\n" + |
| "latest:\t" + latest + "\n" + |
| "latestSupported:\t" + latestSupported); |
| } |
| } |
| |
| private static void testVersionVaryingKeywords() { |
| Map<String, SourceVersion> keyWordStart = |
| Map.of("strictfp", RELEASE_2, |
| "assert", RELEASE_4, |
| "enum", RELEASE_5, |
| "_", RELEASE_9); |
| |
| for (Map.Entry<String, SourceVersion> entry : keyWordStart.entrySet()) { |
| String key = entry.getKey(); |
| SourceVersion value = entry.getValue(); |
| |
| check(true, isKeyword(key), "keyword", latest()); |
| check(false, isName(key), "name", latest()); |
| |
| for(SourceVersion version : SourceVersion.values()) { |
| boolean isKeyword = version.compareTo(value) >= 0; |
| |
| check(isKeyword, isKeyword(key, version), "keyword", version); |
| check(!isKeyword, isName(key, version), "name", version); |
| } |
| } |
| } |
| |
| private static void testRestrictedKeywords() { |
| // Restricted keywords are not full keywords |
| |
| /* |
| * JLS 3.9 |
| * " A further ten character sequences are restricted |
| * keywords: open, module, requires, transitive, exports, |
| * opens, to, uses, provides, and with" |
| */ |
| Set<String> restrictedKeywords = |
| Set.of("open", "module", "requires", "transitive", "exports", |
| "opens", "to", "uses", "provides", "with"); |
| |
| for(String key : restrictedKeywords) { |
| for(SourceVersion version : SourceVersion.values()) { |
| check(false, isKeyword(key, version), "keyword", version); |
| check(true, isName(key, version), "name", version); |
| } |
| } |
| } |
| |
| private static void testVar() { |
| |
| for(SourceVersion version : SourceVersion.values()) { |
| check(false, isKeyword("var", version), "keyword", version); |
| check(false, isKeyword("foo.var", version), "keyword", version); |
| check(false, isKeyword("var.foo", version), "keyword", version); |
| |
| check(true, isName("var", version), "name", version); |
| check(true, isName("foo.var", version), "name", version); |
| check(true, isName("var.foo", version), "name", version); |
| } |
| } |
| |
| private static void check(boolean result, boolean expected, |
| String message, SourceVersion version) { |
| if (result != expected) { |
| throw new RuntimeException("Unexpected " + message + "-ness of _ on " + version); |
| } |
| } |
| } |