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 | } |