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 covers the to be determined language features that will be added in JDK 8. */
71 JDK1_8("1.8");
72
73 private static final Context.Key<Source> sourceKey
74 = new Context.Key<Source>();
75
76 public static Source instance(Context context) {
77 Source instance = context.get(sourceKey);
78 if (instance == null) {
79 Options options = Options.instance(context);
80 String sourceString = options.get(SOURCE);
81 if (sourceString != null) instance = lookup(sourceString);
82 if (instance == null) instance = DEFAULT;
83 context.put(sourceKey, instance);
84 }
85 return instance;
86 }
87
88 public final String name;
89
90 private static final Map<String,Source> tab = new HashMap<String,Source>();
91 static {
92 for (Source s : values()) {
93 tab.put(s.name, s);
94 }
95 tab.put("5", JDK1_5); // Make 5 an alias for 1.5
96 tab.put("6", JDK1_6); // Make 6 an alias for 1.6
97 tab.put("7", JDK1_7); // Make 7 an alias for 1.7
98 tab.put("8", JDK1_8); // Make 8 an alias for 1.8
99 }
100
101 private Source(String name) {
102 this.name = name;
103 }
104
105 public static final Source DEFAULT = JDK1_8;
106
107 public static Source lookup(String name) {
108 return tab.get(name);
109 }
110
111 public Target requiredTarget() {
112 if (this.compareTo(JDK1_8) >= 0) return Target.JDK1_8;
113 if (this.compareTo(JDK1_7) >= 0) return Target.JDK1_7;
114 if (this.compareTo(JDK1_6) >= 0) return Target.JDK1_6;
115 if (this.compareTo(JDK1_5) >= 0) return Target.JDK1_5;
116 if (this.compareTo(JDK1_4) >= 0) return Target.JDK1_4;
117 return Target.JDK1_1;
118 }
119
120 /** Allow encoding errors, giving only warnings. */
121 public boolean allowEncodingErrors() {
122 return compareTo(JDK1_6) < 0;
123 }
124 public boolean allowAsserts() {
125 return compareTo(JDK1_4) >= 0;
126 }
127 public boolean allowCovariantReturns() {
128 return compareTo(JDK1_5) >= 0;
129 }
130 public boolean allowGenerics() {
131 return compareTo(JDK1_5) >= 0;
226 }
227 public boolean allowStructuralMostSpecific() {
228 return compareTo(JDK1_8) >= 0;
229 }
230 public static SourceVersion toSourceVersion(Source source) {
231 switch(source) {
232 case JDK1_2:
233 return RELEASE_2;
234 case JDK1_3:
235 return RELEASE_3;
236 case JDK1_4:
237 return RELEASE_4;
238 case JDK1_5:
239 return RELEASE_5;
240 case JDK1_6:
241 return RELEASE_6;
242 case JDK1_7:
243 return RELEASE_7;
244 case JDK1_8:
245 return RELEASE_8;
246 default:
247 return null;
248 }
249 }
250 }
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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 covers the to be determined language features that will be added in JDK 9. */
74 JDK1_9("1.9");
75
76 private static final Context.Key<Source> sourceKey
77 = new Context.Key<Source>();
78
79 public static Source instance(Context context) {
80 Source instance = context.get(sourceKey);
81 if (instance == null) {
82 Options options = Options.instance(context);
83 String sourceString = options.get(SOURCE);
84 if (sourceString != null) instance = lookup(sourceString);
85 if (instance == null) instance = DEFAULT;
86 context.put(sourceKey, instance);
87 }
88 return instance;
89 }
90
91 public final String name;
92
93 private static final Map<String,Source> tab = new HashMap<>();
94 static {
95 for (Source s : values()) {
96 tab.put(s.name, s);
97 }
98 tab.put("5", JDK1_5); // Make 5 an alias for 1.5
99 tab.put("6", JDK1_6); // Make 6 an alias for 1.6
100 tab.put("7", JDK1_7); // Make 7 an alias for 1.7
101 tab.put("8", JDK1_8); // Make 8 an alias for 1.8
102 tab.put("9", JDK1_9); // Make 9 an alias for 1.9
103 }
104
105 private Source(String name) {
106 this.name = name;
107 }
108
109 public static final Source DEFAULT = JDK1_9;
110
111 public static Source lookup(String name) {
112 return tab.get(name);
113 }
114
115 public Target requiredTarget() {
116 if (this.compareTo(JDK1_9) >= 0) return Target.JDK1_9;
117 if (this.compareTo(JDK1_8) >= 0) return Target.JDK1_8;
118 if (this.compareTo(JDK1_7) >= 0) return Target.JDK1_7;
119 if (this.compareTo(JDK1_6) >= 0) return Target.JDK1_6;
120 if (this.compareTo(JDK1_5) >= 0) return Target.JDK1_5;
121 if (this.compareTo(JDK1_4) >= 0) return Target.JDK1_4;
122 return Target.JDK1_1;
123 }
124
125 /** Allow encoding errors, giving only warnings. */
126 public boolean allowEncodingErrors() {
127 return compareTo(JDK1_6) < 0;
128 }
129 public boolean allowAsserts() {
130 return compareTo(JDK1_4) >= 0;
131 }
132 public boolean allowCovariantReturns() {
133 return compareTo(JDK1_5) >= 0;
134 }
135 public boolean allowGenerics() {
136 return compareTo(JDK1_5) >= 0;
231 }
232 public boolean allowStructuralMostSpecific() {
233 return compareTo(JDK1_8) >= 0;
234 }
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_8; // Adjust once RELEASE_9 exists
253 default:
254 return null;
255 }
256 }
257 }
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