1 /*
2 * Copyright (c) 2002, 2017, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.javac.code;
27
28 import java.util.*;
29
30 import javax.lang.model.SourceVersion;
31 import static javax.lang.model.SourceVersion.*;
32
33 import com.sun.tools.javac.jvm.Target;
34 import com.sun.tools.javac.util.*;
35 import static com.sun.tools.javac.main.Option.*;
36
37 /** The source language version accepted.
38 *
39 * <p><b>This is NOT part of any supported API.
40 * If you write code that depends on this, you do so at your own risk.
41 * This code and its internal interfaces are subject to change or
42 * deletion without notice.</b>
43 */
44 public enum Source {
45 /** 1.0 had no inner classes, and so could not pass the JCK. */
46 // public static final Source JDK1_0 = new Source("1.0");
47
48 /** 1.1 did not have strictfp, and so could not pass the JCK. */
49 // public static final Source JDK1_1 = new Source("1.1");
50
51 /** 1.2 introduced strictfp. */
52 JDK1_2("1.2"),
53
54 /** 1.3 is the same language as 1.2. */
55 JDK1_3("1.3"),
56
57 /** 1.4 introduced assert. */
58 JDK1_4("1.4"),
59
60 /** 1.5 introduced generics, attributes, foreach, boxing, static import,
61 * covariant return, enums, varargs, et al. */
62 JDK1_5("1.5"),
63
64 /** 1.6 reports encoding problems as errors instead of warnings. */
65 JDK1_6("1.6"),
66
67 /** 1.7 introduced try-with-resources, multi-catch, string switch, etc. */
68 JDK1_7("1.7"),
69
70 /** 1.8 lambda expressions and default methods. */
71 JDK1_8("1.8"),
72
73 /** 1.9 modularity. */
74 JDK1_9("1.9"),
75
76 /** 1.10 covers the to be determined language features that will be added in JDK 10. */
77 JDK1_10("1.10"),
78
79 JDK_11("11");
80
81
82 private static final Context.Key<Source> sourceKey = new Context.Key<>();
83
84 public static Source instance(Context context) {
85 Source instance = context.get(sourceKey);
86 if (instance == null) {
87 Options options = Options.instance(context);
88 String sourceString = options.get(SOURCE);
89 if (sourceString != null) instance = lookup(sourceString);
90 if (instance == null) instance = DEFAULT;
91 context.put(sourceKey, instance);
92 }
93 return instance;
94 }
95
96 public final String name;
97
98 private static final Map<String,Source> tab = new HashMap<>();
99 static {
100 for (Source s : values()) {
101 tab.put(s.name, s);
102 }
103 tab.put("5", JDK1_5); // Make 5 an alias for 1.5
104 tab.put("6", JDK1_6); // Make 6 an alias for 1.6
105 tab.put("7", JDK1_7); // Make 7 an alias for 1.7
106 tab.put("8", JDK1_8); // Make 8 an alias for 1.8
107 tab.put("9", JDK1_9); // Make 9 an alias for 1.9
108 tab.put("10", JDK1_10); // Make 10 an alias for 1.10
109 tab.put("11", JDK_11);
110 }
111
112 private Source(String name) {
113 this.name = name;
114 }
115
116 public static final Source MIN = Source.JDK1_6;
117
118 private static final Source MAX = values()[values().length - 1];
119
120 public static final Source DEFAULT = JDK1_10; // MAX; - FIXME later
121
122 public static Source lookup(String name) {
123 return tab.get(name);
124 }
125
126 public Target requiredTarget() {
127 if (this.compareTo(JDK_11) >= 0) return Target.JDK_11;
128 if (this.compareTo(JDK1_10) >= 0) return Target.JDK1_10;
129 if (this.compareTo(JDK1_9) >= 0) return Target.JDK1_9;
130 if (this.compareTo(JDK1_8) >= 0) return Target.JDK1_8;
131 if (this.compareTo(JDK1_7) >= 0) return Target.JDK1_7;
132 if (this.compareTo(JDK1_6) >= 0) return Target.JDK1_6;
133 if (this.compareTo(JDK1_5) >= 0) return Target.JDK1_5;
134 if (this.compareTo(JDK1_4) >= 0) return Target.JDK1_4;
135 return Target.JDK1_1;
136 }
137
138 public boolean allowDiamond() {
139 return compareTo(JDK1_7) >= 0;
140 }
141 public boolean allowMulticatch() {
142 return compareTo(JDK1_7) >= 0;
143 }
144 public boolean allowImprovedRethrowAnalysis() {
145 return compareTo(JDK1_7) >= 0;
146 }
147 public boolean allowImprovedCatchAnalysis() {
148 return compareTo(JDK1_7) >= 0;
149 }
150 public boolean allowModules() {
151 return compareTo(JDK1_9) >= 0;
152 }
153 public boolean allowTryWithResources() {
154 return compareTo(JDK1_7) >= 0;
155 }
156 public boolean allowEffectivelyFinalVariablesInTryWithResources() {
157 return compareTo(JDK1_9) >= 0;
158 }
159 public boolean allowBinaryLiterals() {
160 return compareTo(JDK1_7) >= 0;
161 }
162 public boolean allowUnderscoresInLiterals() {
163 return compareTo(JDK1_7) >= 0;
164 }
165 public boolean allowStringsInSwitch() {
166 return compareTo(JDK1_7) >= 0;
167 }
168 public boolean allowDeprecationOnImport() {
169 return compareTo(JDK1_9) < 0;
170 }
171 public boolean allowSimplifiedVarargs() {
172 return compareTo(JDK1_7) >= 0;
173 }
174 public boolean allowObjectToPrimitiveCast() {
175 return compareTo(JDK1_7) >= 0;
176 }
177 public boolean enforceThisDotInit() {
178 return compareTo(JDK1_7) >= 0;
179 }
180 public boolean allowPoly() {
181 return compareTo(JDK1_8) >= 0;
182 }
183 public boolean allowLambda() {
184 return compareTo(JDK1_8) >= 0;
185 }
186 public boolean allowMethodReferences() {
187 return compareTo(JDK1_8) >= 0;
188 }
189 public boolean allowDefaultMethods() {
190 return compareTo(JDK1_8) >= 0;
191 }
192 public boolean allowStaticInterfaceMethods() {
193 return compareTo(JDK1_8) >= 0;
194 }
195 public boolean allowStrictMethodClashCheck() {
196 return compareTo(JDK1_8) >= 0;
197 }
198 public boolean allowEffectivelyFinalInInnerClasses() {
199 return compareTo(JDK1_8) >= 0;
200 }
201 public boolean allowTypeAnnotations() {
202 return compareTo(JDK1_8) >= 0;
203 }
204 public boolean allowAnnotationsAfterTypeParams() {
205 return compareTo(JDK1_8) >= 0;
206 }
207 public boolean allowRepeatedAnnotations() {
208 return compareTo(JDK1_8) >= 0;
209 }
210 public boolean allowIntersectionTypesInCast() {
211 return compareTo(JDK1_8) >= 0;
212 }
213 public boolean allowGraphInference() {
214 return compareTo(JDK1_8) >= 0;
215 }
216 public boolean allowFunctionalInterfaceMostSpecific() {
217 return compareTo(JDK1_8) >= 0;
218 }
219 public boolean allowPostApplicabilityVarargsAccessCheck() {
220 return compareTo(JDK1_8) >= 0;
221 }
222 public boolean mapCapturesToBounds() {
223 return compareTo(JDK1_8) < 0;
224 }
225 public boolean allowPrivateSafeVarargs() {
226 return compareTo(JDK1_9) >= 0;
227 }
228 public boolean allowDiamondWithAnonymousClassCreation() {
229 return compareTo(JDK1_9) >= 0;
230 }
231 public boolean allowUnderscoreIdentifier() {
232 return compareTo(JDK1_8) <= 0;
233 }
234 public boolean allowPrivateInterfaceMethods() { return compareTo(JDK1_9) >= 0; }
235 public static SourceVersion toSourceVersion(Source source) {
236 switch(source) {
237 case JDK1_2:
238 return RELEASE_2;
239 case JDK1_3:
240 return RELEASE_3;
241 case JDK1_4:
242 return RELEASE_4;
243 case JDK1_5:
244 return RELEASE_5;
245 case JDK1_6:
246 return RELEASE_6;
247 case JDK1_7:
248 return RELEASE_7;
249 case JDK1_8:
250 return RELEASE_8;
251 case JDK1_9:
252 return RELEASE_9;
253 case JDK1_10:
254 return RELEASE_10;
255 case JDK_11:
256 return RELEASE_11;
257 default:
258 return null;
259 }
260 }
261 }