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/*
 * Copyright 2002-2006 Sun Microsystems, Inc.  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.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package com.sun.tools.javac.code;

import com.sun.tools.javac.util.*;
import com.sun.tools.javac.jvm.Target;
import javax.lang.model.SourceVersion;
import static javax.lang.model.SourceVersion.*;
import java.util.*;

/** The source language version accepted.
 *
 *  

This is NOT part of any API supported by Sun Microsystems. 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. */ @Version("@(#)Source.java 1.51 07/05/05") 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 covers the to be determined language features that will be added in JDK 7. */ JDK1_7("1.7"); private static final Context.Key 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 Map 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 } private Source(String name) { this.name = name; } public static final Source DEFAULT = JDK1_5; public static Source lookup(String name) { return tab.get(name); } public Target requiredTarget() { 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 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 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; default: return null; } } }





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