--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Source.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,254 @@
+/*
+ * Copyright (c) 2002, 2017, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package com.sun.tools.javac.code;
+
+import java.util.*;
+
+import javax.lang.model.SourceVersion;
+import static javax.lang.model.SourceVersion.*;
+
+import com.sun.tools.javac.jvm.Target;
+import com.sun.tools.javac.util.*;
+import static com.sun.tools.javac.main.Option.*;
+
+/** The source language version accepted.
+ *
+ * <p><b>This is NOT part of any supported API.
+ * If you write code that depends on this, you do so at your own risk.
+ * This code and its internal interfaces are subject to change or
+ * deletion without notice.</b>
+ */
+public enum Source {
+ /** 1.0 had no inner classes, and so could not pass the JCK. */
+ // public static final Source JDK1_0 = new Source("1.0");
+
+ /** 1.1 did not have strictfp, and so could not pass the JCK. */
+ // public static final Source JDK1_1 = new Source("1.1");
+
+ /** 1.2 introduced strictfp. */
+ JDK1_2("1.2"),
+
+ /** 1.3 is the same language as 1.2. */
+ JDK1_3("1.3"),
+
+ /** 1.4 introduced assert. */
+ JDK1_4("1.4"),
+
+ /** 1.5 introduced generics, attributes, foreach, boxing, static import,
+ * covariant return, enums, varargs, et al. */
+ JDK1_5("1.5"),
+
+ /** 1.6 reports encoding problems as errors instead of warnings. */
+ JDK1_6("1.6"),
+
+ /** 1.7 introduced try-with-resources, multi-catch, string switch, etc. */
+ JDK1_7("1.7"),
+
+ /** 1.8 lambda expressions and default methods. */
+ JDK1_8("1.8"),
+
+ /** 1.9 modularity. */
+ JDK1_9("1.9"),
+
+ /** 1.10 covers the to be determined language features that will be added in JDK 10. */
+ JDK1_10("1.10");
+
+ private static final Context.Key<Source> sourceKey = new Context.Key<>();
+
+ public static Source instance(Context context) {
+ Source instance = context.get(sourceKey);
+ if (instance == null) {
+ Options options = Options.instance(context);
+ String sourceString = options.get(SOURCE);
+ if (sourceString != null) instance = lookup(sourceString);
+ if (instance == null) instance = DEFAULT;
+ context.put(sourceKey, instance);
+ }
+ return instance;
+ }
+
+ public final String name;
+
+ private static final Map<String,Source> tab = new HashMap<>();
+ static {
+ for (Source s : values()) {
+ tab.put(s.name, s);
+ }
+ tab.put("5", JDK1_5); // Make 5 an alias for 1.5
+ tab.put("6", JDK1_6); // Make 6 an alias for 1.6
+ tab.put("7", JDK1_7); // Make 7 an alias for 1.7
+ tab.put("8", JDK1_8); // Make 8 an alias for 1.8
+ tab.put("9", JDK1_9); // Make 9 an alias for 1.9
+ tab.put("10", JDK1_10); // Make 10 an alias for 1.10
+ }
+
+ private Source(String name) {
+ this.name = name;
+ }
+
+ public static final Source MIN = Source.JDK1_6;
+
+ private static final Source MAX = values()[values().length - 1];
+
+ public static final Source DEFAULT = MAX;
+
+ public static Source lookup(String name) {
+ return tab.get(name);
+ }
+
+ public Target requiredTarget() {
+ if (this.compareTo(JDK1_10) >= 0) return Target.JDK1_10;
+ if (this.compareTo(JDK1_9) >= 0) return Target.JDK1_9;
+ if (this.compareTo(JDK1_8) >= 0) return Target.JDK1_8;
+ if (this.compareTo(JDK1_7) >= 0) return Target.JDK1_7;
+ if (this.compareTo(JDK1_6) >= 0) return Target.JDK1_6;
+ if (this.compareTo(JDK1_5) >= 0) return Target.JDK1_5;
+ if (this.compareTo(JDK1_4) >= 0) return Target.JDK1_4;
+ return Target.JDK1_1;
+ }
+
+ public boolean allowDiamond() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowMulticatch() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowImprovedRethrowAnalysis() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowImprovedCatchAnalysis() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowModules() {
+ return compareTo(JDK1_9) >= 0;
+ }
+ public boolean allowTryWithResources() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowEffectivelyFinalVariablesInTryWithResources() {
+ return compareTo(JDK1_9) >= 0;
+ }
+ public boolean allowBinaryLiterals() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowUnderscoresInLiterals() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowStringsInSwitch() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowDeprecationOnImport() {
+ return compareTo(JDK1_9) < 0;
+ }
+ public boolean allowSimplifiedVarargs() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowObjectToPrimitiveCast() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean enforceThisDotInit() {
+ return compareTo(JDK1_7) >= 0;
+ }
+ public boolean allowPoly() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowLambda() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowMethodReferences() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowDefaultMethods() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowStaticInterfaceMethods() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowStrictMethodClashCheck() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowEffectivelyFinalInInnerClasses() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowTypeAnnotations() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowAnnotationsAfterTypeParams() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowRepeatedAnnotations() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowIntersectionTypesInCast() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowGraphInference() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowFunctionalInterfaceMostSpecific() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean allowPostApplicabilityVarargsAccessCheck() {
+ return compareTo(JDK1_8) >= 0;
+ }
+ public boolean mapCapturesToBounds() {
+ return compareTo(JDK1_8) < 0;
+ }
+ public boolean allowPrivateSafeVarargs() {
+ return compareTo(JDK1_9) >= 0;
+ }
+ public boolean allowDiamondWithAnonymousClassCreation() {
+ return compareTo(JDK1_9) >= 0;
+ }
+ public boolean allowUnderscoreIdentifier() {
+ return compareTo(JDK1_8) <= 0;
+ }
+ public boolean allowPrivateInterfaceMethods() { return compareTo(JDK1_9) >= 0; }
+ public static SourceVersion toSourceVersion(Source source) {
+ switch(source) {
+ case JDK1_2:
+ return RELEASE_2;
+ case JDK1_3:
+ return RELEASE_3;
+ case JDK1_4:
+ return RELEASE_4;
+ case JDK1_5:
+ return RELEASE_5;
+ case JDK1_6:
+ return RELEASE_6;
+ case JDK1_7:
+ return RELEASE_7;
+ case JDK1_8:
+ return RELEASE_8;
+ case JDK1_9:
+ return RELEASE_9;
+ case JDK1_10:
+ return RELEASE_10;
+ default:
+ return null;
+ }
+ }
+}