210 lines
8.3 KiB
Java
210 lines
8.3 KiB
Java
/*
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* Copyright (c) 2011, 2021, 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 7025809 8028543 6415644 8028544 8029942 8187951 8193291 8196551 8233096 8275308
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* @summary Test latest, latestSupported, underscore as keyword, etc.
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* @author Joseph D. Darcy
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* @modules java.compiler
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* jdk.compiler
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*/
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import java.util.*;
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import java.util.function.Predicate;
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import javax.lang.model.SourceVersion;
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import static javax.lang.model.SourceVersion.*;
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/**
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* Verify behavior of latest[Supported] and other methods.
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*/
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public class TestSourceVersion {
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public static void main(String... args) {
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testLatestSupported();
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testVersionVaryingKeywords();
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testRestrictedKeywords();
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testVar();
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testYield();
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testValueOfRV();
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testRuntimeVersion();
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}
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private static void testLatestSupported() {
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SourceVersion[] values = SourceVersion.values();
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SourceVersion last = values[values.length - 1];
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SourceVersion latest = SourceVersion.latest();
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SourceVersion latestSupported = SourceVersion.latestSupported();
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if (latest == last &&
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latestSupported == SourceVersion.valueOf("RELEASE_" +
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Runtime.version().feature()) &&
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(latest == latestSupported ||
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(latest.ordinal() - latestSupported.ordinal() == 1)) )
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return;
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else {
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throw new RuntimeException("Unexpected release value(s) found:\n" +
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"latest:\t" + latest + "\n" +
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"latestSupported:\t" + latestSupported);
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}
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}
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private static void testVersionVaryingKeywords() {
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Map<String, SourceVersion> keyWordStart =
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Map.of("strictfp", RELEASE_2,
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"assert", RELEASE_4,
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"enum", RELEASE_5,
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"_", RELEASE_9);
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for (Map.Entry<String, SourceVersion> entry : keyWordStart.entrySet()) {
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String key = entry.getKey();
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SourceVersion value = entry.getValue();
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check(true, key, (String s) -> isKeyword(s), "keyword", latest());
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check(false, key, (String s) -> isName(s), "name", latest());
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for(SourceVersion version : SourceVersion.values()) {
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boolean isKeyword = version.compareTo(value) >= 0;
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check(isKeyword, key, (String s) -> isKeyword(s, version), "keyword", version);
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check(!isKeyword, key, (String s) -> isName(s, version), "name", version);
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}
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}
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}
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private static void testRestrictedKeywords() {
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// Restricted keywords are not full keywords
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/*
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* JLS 3.9
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* " A further ten character sequences are restricted
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* keywords: open, module, requires, transitive, exports,
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* opens, to, uses, provides, and with"
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*/
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Set<String> restrictedKeywords =
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Set.of("open", "module", "requires", "transitive", "exports",
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"opens", "to", "uses", "provides", "with",
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// Assume "record" and "sealed" will be restricted keywords.
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"record", "sealed");
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for (String key : restrictedKeywords) {
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for (SourceVersion version : SourceVersion.values()) {
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check(false, key, (String s) -> isKeyword(s, version), "keyword", version);
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check(true, key, (String s) -> isName(s, version), "name", version);
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}
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}
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}
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private static void testVar() {
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for (SourceVersion version : SourceVersion.values()) {
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Predicate<String> isKeywordVersion = (String s) -> isKeyword(s, version);
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Predicate<String> isNameVersion = (String s) -> isName(s, version);
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for (String name : List.of("var", "foo.var", "var.foo")) {
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check(false, name, isKeywordVersion, "keyword", version);
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check(true, name, isNameVersion, "name", version);
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}
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}
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}
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private static void testYield() {
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for (SourceVersion version : SourceVersion.values()) {
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Predicate<String> isKeywordVersion = (String s) -> isKeyword(s, version);
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Predicate<String> isNameVersion = (String s) -> isName(s, version);
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for (String name : List.of("yield", "foo.yield", "yield.foo")) {
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check(false, name, isKeywordVersion, "keyword", version);
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check(true, name, isNameVersion, "name", version);
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}
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}
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}
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private static void check(boolean expected,
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String input,
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Predicate<String> predicate,
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String message,
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SourceVersion version) {
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boolean result = predicate.test(input);
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if (result != expected) {
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throw new RuntimeException("Unexpected " + message + "-ness of " + input +
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" on " + version);
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}
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}
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/**
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* Test that SourceVersion.valueOf() maps a Runtime.Version to a
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* SourceVersion properly. The SourceVersion result is only a
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* function of the feature() component of a Runtime.Version.
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*/
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private static void testValueOfRV() {
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for (SourceVersion sv : SourceVersion.values()) {
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if (sv == RELEASE_0) {
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continue;
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} else {
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// Plain mapping; e.g. "17" -> RELEASE_17
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String featureBase = Integer.toString(sv.ordinal());
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checkValueOfResult(sv, featureBase);
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// More populated runtime version, N.N
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checkValueOfResult(sv, featureBase + "." + featureBase);
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}
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}
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// Out of range test
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try {
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int latestFeature = SourceVersion.latest().runtimeVersion().feature();
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SourceVersion.valueOf(Runtime.Version.parse(Integer.toString(latestFeature +1)));
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throw new RuntimeException("Should not reach");
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} catch (IllegalArgumentException iae) {
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; // Expected
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}
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}
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private static void checkValueOfResult(SourceVersion expected, String versionString) {
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Runtime.Version rv = Runtime.Version.parse(versionString);
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SourceVersion result = SourceVersion.valueOf(rv);
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if (result != expected) {
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throw new RuntimeException("Unexpected result " + result +
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" of mapping Runtime.Version " + versionString +
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" intead of " + expected);
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}
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}
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private static void testRuntimeVersion() {
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for (SourceVersion sv : SourceVersion.values()) {
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Runtime.Version result = sv.runtimeVersion();
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if (sv.compareTo(RELEASE_6) < 0) {
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if (result != null) {
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throw new RuntimeException("Unexpected result non-null " + result +
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" as runtime version of " + sv);
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}
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} else {
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Runtime.Version expected = Runtime.Version.parse(Integer.toString(sv.ordinal()));
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if (!result.equals(expected)) {
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throw new RuntimeException("Unexpected result " + result +
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" as runtime version of " + sv);
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}
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}
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}
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}
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}
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