langtools/src/share/classes/com/sun/tools/javac/code/Source.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2002, 2014, 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 DEFAULT = JDK1_9;

     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;
     }

     /** Allow encoding errors, giving only warnings. */
     public boolean allowEncodingErrors() {
         return compareTo(JDK1_6) < 0;
     }
     public boolean allowAsserts() {
         return compareTo(JDK1_4) >= 0;
     }
     public boolean allowCovariantReturns() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean allowGenerics() {
         return compareTo(JDK1_5) >= 0;
     }
     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 allowEnums() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean allowForeach() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean allowStaticImport() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean allowBoxing() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean allowVarargs() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean allowAnnotations() {
         return compareTo(JDK1_5) >= 0;
     }
     // hex floating-point literals supported?
     public boolean allowHexFloats() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean allowAnonOuterThis() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean addBridges() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean enforceMandatoryWarnings() {
         return compareTo(JDK1_5) >= 0;
     }
     public boolean allowTryWithResources() {
         return compareTo(JDK1_7) >= 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 allowSimplifiedVarargs() {
         return compareTo(JDK1_7) >= 0;
     }
     public boolean allowObjectToPrimitiveCast() {
         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 allowDefaultMethodsResolution() {
         return compareTo(JDK1_7) >= 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 allowRepeatedAnnotations() {
         return compareTo(JDK1_8) >= 0;
     }
     public boolean allowIntersectionTypesInCast() {
         return compareTo(JDK1_8) >= 0;
     }
     public boolean allowGraphInference() {
         return compareTo(JDK1_8) >= 0;
     }
     public boolean allowStructuralMostSpecific() {
         return compareTo(JDK1_8) >= 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;
         }
     }
 }
	/*
	* Copyright (c) 2002, 2014, 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 DEFAULT = JDK1_9;

	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;
	}

	/** Allow encoding errors, giving only warnings. */
	public boolean allowEncodingErrors() {
	return compareTo(JDK1_6) < 0;
	}
	public boolean allowAsserts() {
	return compareTo(JDK1_4) >= 0;
	}
	public boolean allowCovariantReturns() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean allowGenerics() {
	return compareTo(JDK1_5) >= 0;
	}
	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 allowEnums() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean allowForeach() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean allowStaticImport() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean allowBoxing() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean allowVarargs() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean allowAnnotations() {
	return compareTo(JDK1_5) >= 0;
	}
	// hex floating-point literals supported?
	public boolean allowHexFloats() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean allowAnonOuterThis() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean addBridges() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean enforceMandatoryWarnings() {
	return compareTo(JDK1_5) >= 0;
	}
	public boolean allowTryWithResources() {
	return compareTo(JDK1_7) >= 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 allowSimplifiedVarargs() {
	return compareTo(JDK1_7) >= 0;
	}
	public boolean allowObjectToPrimitiveCast() {
	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 allowDefaultMethodsResolution() {
	return compareTo(JDK1_7) >= 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 allowRepeatedAnnotations() {
	return compareTo(JDK1_8) >= 0;
	}
	public boolean allowIntersectionTypesInCast() {
	return compareTo(JDK1_8) >= 0;
	}
	public boolean allowGraphInference() {
	return compareTo(JDK1_8) >= 0;
	}
	public boolean allowStructuralMostSpecific() {
	return compareTo(JDK1_8) >= 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;
	}
	}
	}