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