| 1 | /* |
| 2 | * Copyright 2002-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.tools.javac.code; |
| 27 | |
| 28 | import com.sun.tools.javac.util.*; |
| 29 | import com.sun.tools.javac.jvm.Target; |
| 30 | import javax.lang.model.SourceVersion; |
| 31 | import static javax.lang.model.SourceVersion.*; |
| 32 | import java.util.*; |
| 33 | |
| 34 | /** The source language version accepted. |
| 35 | * |
| 36 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
| 37 | * you write code that depends on this, you do so at your own risk. |
| 38 | * This code and its internal interfaces are subject to change or |
| 39 | * deletion without notice.</b> |
| 40 | */ |
| 41 | public enum Source { |
| 42 | /** 1.0 had no inner classes, and so could not pass the JCK. */ |
| 43 | // public static final Source JDK1_0 = new Source("1.0"); |
| 44 | |
| 45 | /** 1.1 did not have strictfp, and so could not pass the JCK. */ |
| 46 | // public static final Source JDK1_1 = new Source("1.1"); |
| 47 | |
| 48 | /** 1.2 introduced strictfp. */ |
| 49 | JDK1_2("1.2"), |
| 50 | |
| 51 | /** 1.3 is the same language as 1.2. */ |
| 52 | JDK1_3("1.3"), |
| 53 | |
| 54 | /** 1.4 introduced assert. */ |
| 55 | JDK1_4("1.4"), |
| 56 | |
| 57 | /** 1.5 introduced generics, attributes, foreach, boxing, static import, |
| 58 | * covariant return, enums, varargs, et al. */ |
| 59 | JDK1_5("1.5"), |
| 60 | |
| 61 | /** 1.6 reports encoding problems as errors instead of warnings. */ |
| 62 | JDK1_6("1.6"), |
| 63 | |
| 64 | /** 1.7 covers the to be determined language features that will be added in JDK 7. */ |
| 65 | JDK1_7("1.7"); |
| 66 | |
| 67 | private static final Context.Key<Source> sourceKey |
| 68 | = new Context.Key<Source>(); |
| 69 | |
| 70 | public static Source instance(Context context) { |
| 71 | Source instance = context.get(sourceKey); |
| 72 | if (instance == null) { |
| 73 | Options options = Options.instance(context); |
| 74 | String sourceString = options.get("-source"); |
| 75 | if (sourceString != null) instance = lookup(sourceString); |
| 76 | if (instance == null) instance = DEFAULT; |
| 77 | context.put(sourceKey, instance); |
| 78 | } |
| 79 | return instance; |
| 80 | } |
| 81 | |
| 82 | public final String name; |
| 83 | |
| 84 | private static Map<String,Source> tab = new HashMap<String,Source>(); |
| 85 | static { |
| 86 | for (Source s : values()) { |
| 87 | tab.put(s.name, s); |
| 88 | } |
| 89 | tab.put("5", JDK1_5); // Make 5 an alias for 1.5 |
| 90 | tab.put("6", JDK1_6); // Make 6 an alias for 1.6 |
| 91 | tab.put("7", JDK1_7); // Make 7 an alias for 1.7 |
| 92 | } |
| 93 | |
| 94 | private Source(String name) { |
| 95 | this.name = name; |
| 96 | } |
| 97 | |
| 98 | public static final Source DEFAULT = JDK1_5; |
| 99 | |
| 100 | public static Source lookup(String name) { |
| 101 | return tab.get(name); |
| 102 | } |
| 103 | |
| 104 | public Target requiredTarget() { |
| 105 | if (this.compareTo(JDK1_7) >= 0) return Target.JDK1_7; |
| 106 | if (this.compareTo(JDK1_6) >= 0) return Target.JDK1_6; |
| 107 | if (this.compareTo(JDK1_5) >= 0) return Target.JDK1_5; |
| 108 | if (this.compareTo(JDK1_4) >= 0) return Target.JDK1_4; |
| 109 | return Target.JDK1_1; |
| 110 | } |
| 111 | |
| 112 | /** Allow encoding errors, giving only warnings. */ |
| 113 | public boolean allowEncodingErrors() { |
| 114 | return compareTo(JDK1_6) < 0; |
| 115 | } |
| 116 | public boolean allowAsserts() { |
| 117 | return compareTo(JDK1_4) >= 0; |
| 118 | } |
| 119 | public boolean allowCovariantReturns() { |
| 120 | return compareTo(JDK1_5) >= 0; |
| 121 | } |
| 122 | public boolean allowGenerics() { |
| 123 | return compareTo(JDK1_5) >= 0; |
| 124 | } |
| 125 | public boolean allowEnums() { |
| 126 | return compareTo(JDK1_5) >= 0; |
| 127 | } |
| 128 | public boolean allowForeach() { |
| 129 | return compareTo(JDK1_5) >= 0; |
| 130 | } |
| 131 | public boolean allowStaticImport() { |
| 132 | return compareTo(JDK1_5) >= 0; |
| 133 | } |
| 134 | public boolean allowBoxing() { |
| 135 | return compareTo(JDK1_5) >= 0; |
| 136 | } |
| 137 | public boolean allowVarargs() { |
| 138 | return compareTo(JDK1_5) >= 0; |
| 139 | } |
| 140 | public boolean allowAnnotations() { |
| 141 | return compareTo(JDK1_5) >= 0; |
| 142 | } |
| 143 | // hex floating-point literals supported? |
| 144 | public boolean allowHexFloats() { |
| 145 | return compareTo(JDK1_5) >= 0; |
| 146 | } |
| 147 | public boolean allowAnonOuterThis() { |
| 148 | return compareTo(JDK1_5) >= 0; |
| 149 | } |
| 150 | public boolean addBridges() { |
| 151 | return compareTo(JDK1_5) >= 0; |
| 152 | } |
| 153 | public boolean enforceMandatoryWarnings() { |
| 154 | return compareTo(JDK1_5) >= 0; |
| 155 | } |
| 156 | public static SourceVersion toSourceVersion(Source source) { |
| 157 | switch(source) { |
| 158 | case JDK1_2: |
| 159 | return RELEASE_2; |
| 160 | case JDK1_3: |
| 161 | return RELEASE_3; |
| 162 | case JDK1_4: |
| 163 | return RELEASE_4; |
| 164 | case JDK1_5: |
| 165 | return RELEASE_5; |
| 166 | case JDK1_6: |
| 167 | return RELEASE_6; |
| 168 | case JDK1_7: |
| 169 | return RELEASE_7; |
| 170 | default: |
| 171 | return null; |
| 172 | } |
| 173 | } |
| 174 | } |