| /* |
| * Copyright (c) 2002, 2006, 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 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. |
| * |
| * <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 covers the to be determined language features that will be added in JDK 7. */ |
| JDK1_7("1.7"); |
| |
| private static final Context.Key<Source> sourceKey |
| = new Context.Key<Source>(); |
| |
| 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<String,Source> tab = new HashMap<String,Source>(); |
| 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_7; |
| |
| 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 allowDiamond() { |
| return compareTo(JDK1_7) >= 0; |
| } |
| public boolean allowMulticatch() { |
| 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 allowTypeAnnotations() { |
| return compareTo(JDK1_7) >= 0; |
| } |
| public boolean allowBinaryLiterals() { |
| return compareTo(JDK1_7) >= 0; |
| } |
| public boolean allowUnderscoresInLiterals() { |
| return compareTo(JDK1_7) >= 0; |
| } |
| public boolean allowExoticIdentifiers() { |
| return compareTo(JDK1_7) >= 0; |
| } |
| public boolean allowStringsInSwitch() { |
| return compareTo(JDK1_7) >= 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; |
| } |
| } |
| } |