/*
* Copyright (c) 2002, 2015, 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 covers the to be determined language features that will be added in JDK 9. */
JDK1_9("1.9");
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
}
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_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 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;
default:
return null;
}
}
}