1 /* |
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2 * Copyright (c) 2004, Oracle and/or its affiliates. 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. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.tools.apt.mirror.type; |
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27 |
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28 |
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29 import java.util.Collection; |
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30 import java.util.ArrayList; |
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31 |
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32 import com.sun.mirror.type.*; |
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33 import com.sun.mirror.type.PrimitiveType.Kind; |
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34 import com.sun.tools.apt.mirror.AptEnv; |
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35 import com.sun.tools.javac.code.*; |
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36 import com.sun.tools.javac.util.Context; |
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37 |
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38 import static com.sun.tools.javac.code.TypeTags.*; |
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39 |
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40 |
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41 /** |
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42 * Utilities for constructing type objects. |
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43 */ |
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44 @SuppressWarnings("deprecation") |
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45 public class TypeMaker { |
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46 |
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47 private final AptEnv env; |
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48 private final VoidType voidType; |
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49 private PrimitiveType[] primTypes = new PrimitiveType[VOID]; |
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50 // VOID is past all prim types |
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51 |
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52 |
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53 private static final Context.Key<TypeMaker> typeMakerKey = |
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54 new Context.Key<TypeMaker>(); |
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55 |
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56 public static TypeMaker instance(Context context) { |
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57 TypeMaker instance = context.get(typeMakerKey); |
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58 if (instance == null) { |
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59 instance = new TypeMaker(context); |
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60 } |
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61 return instance; |
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62 } |
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63 |
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64 private TypeMaker(Context context) { |
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65 context.put(typeMakerKey, this); |
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66 env = AptEnv.instance(context); |
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67 |
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68 voidType = new VoidTypeImpl(env); |
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69 primTypes[BOOLEAN] = new PrimitiveTypeImpl(env, Kind.BOOLEAN); |
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70 primTypes[BYTE] = new PrimitiveTypeImpl(env, Kind.BYTE); |
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71 primTypes[SHORT] = new PrimitiveTypeImpl(env, Kind.SHORT); |
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72 primTypes[INT] = new PrimitiveTypeImpl(env, Kind.INT); |
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73 primTypes[LONG] = new PrimitiveTypeImpl(env, Kind.LONG); |
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74 primTypes[CHAR] = new PrimitiveTypeImpl(env, Kind.CHAR); |
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75 primTypes[FLOAT] = new PrimitiveTypeImpl(env, Kind.FLOAT); |
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76 primTypes[DOUBLE] = new PrimitiveTypeImpl(env, Kind.DOUBLE); |
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77 } |
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78 |
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79 |
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80 /** |
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81 * Returns the TypeMirror corresponding to a javac Type object. |
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82 */ |
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83 public TypeMirror getType(Type t) { |
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84 if (t.isPrimitive()) { |
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85 return primTypes[t.tag]; |
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86 } |
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87 switch (t.tag) { |
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88 case ERROR: // fall through |
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89 case CLASS: return getDeclaredType((Type.ClassType) t); |
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90 case WILDCARD: return new WildcardTypeImpl(env, (Type.WildcardType) t); |
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91 case TYPEVAR: return new TypeVariableImpl(env, (Type.TypeVar) t); |
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92 case ARRAY: return new ArrayTypeImpl(env, (Type.ArrayType) t); |
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93 case VOID: return voidType; |
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94 default: throw new AssertionError(); |
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95 } |
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96 } |
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97 |
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98 /** |
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99 * Returns the declared type corresponding to a given ClassType. |
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100 */ |
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101 public DeclaredType getDeclaredType(Type.ClassType t) { |
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102 return |
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103 hasFlag(t.tsym, Flags.ANNOTATION) ? new AnnotationTypeImpl(env, t) : |
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104 hasFlag(t.tsym, Flags.INTERFACE) ? new InterfaceTypeImpl(env, t) : |
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105 hasFlag(t.tsym, Flags.ENUM) ? new EnumTypeImpl(env, t) : |
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106 new ClassTypeImpl(env, t); |
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107 } |
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108 |
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109 /** |
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110 * Returns a collection of types corresponding to a list of javac Type |
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111 * objects. |
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112 */ |
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113 public Collection<TypeMirror> getTypes(Iterable<Type> types) { |
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114 return getTypes(types, TypeMirror.class); |
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115 } |
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116 |
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117 /** |
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118 * Returns a collection of types corresponding to a list of javac Type |
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119 * objects. The element type of the result is specified explicitly. |
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120 */ |
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121 public <T extends TypeMirror> Collection<T> getTypes(Iterable<Type> types, |
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122 Class<T> resType) { |
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123 ArrayList<T> res = new ArrayList<T>(); |
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124 for (Type t : types) { |
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125 TypeMirror mir = getType(t); |
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126 if (resType.isInstance(mir)) { |
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127 res.add(resType.cast(mir)); |
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128 } |
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129 } |
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130 return res; |
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131 } |
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132 |
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133 /** |
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134 * Returns the string representation of a type. |
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135 * Bounds of type variables are not included; bounds of wildcard types are. |
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136 * Type names are qualified. |
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137 */ |
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138 public String typeToString(Type t) { |
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139 switch (t.tag) { |
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140 case ARRAY: |
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141 return typeToString(env.jctypes.elemtype(t)) + "[]"; |
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142 case CLASS: |
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143 Type.ClassType c = (Type.ClassType) t; |
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144 return DeclaredTypeImpl.toString(env, c); |
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145 case WILDCARD: |
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146 Type.WildcardType a = (Type.WildcardType) t; |
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147 return WildcardTypeImpl.toString(env, a); |
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148 default: |
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149 return t.tsym.toString(); |
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150 } |
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151 } |
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152 |
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153 |
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154 /** |
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155 * Does a symbol have a given flag? |
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156 */ |
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157 private static boolean hasFlag(Symbol s, long flag) { |
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158 return AptEnv.hasFlag(s, flag); |
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159 } |
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160 } |
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