Wed, 27 Apr 2016 01:34:52 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | package com.sun.tools.javac.code; |
aoqi@0 | 27 | |
aoqi@0 | 28 | import java.util.LinkedHashMap; |
aoqi@0 | 29 | import java.util.Map; |
aoqi@0 | 30 | import javax.lang.model.element.AnnotationMirror; |
aoqi@0 | 31 | import javax.lang.model.element.AnnotationValue; |
aoqi@0 | 32 | import javax.lang.model.element.AnnotationValueVisitor; |
aoqi@0 | 33 | import javax.lang.model.type.DeclaredType; |
aoqi@0 | 34 | import com.sun.tools.javac.code.Symbol.*; |
aoqi@0 | 35 | import com.sun.tools.javac.util.*; |
aoqi@0 | 36 | |
aoqi@0 | 37 | /** An annotation value. |
aoqi@0 | 38 | * |
aoqi@0 | 39 | * <p><b>This is NOT part of any supported API. |
aoqi@0 | 40 | * If you write code that depends on this, you do so at your own risk. |
aoqi@0 | 41 | * This code and its internal interfaces are subject to change or |
aoqi@0 | 42 | * deletion without notice.</b> |
aoqi@0 | 43 | */ |
aoqi@0 | 44 | public abstract class Attribute implements AnnotationValue { |
aoqi@0 | 45 | |
aoqi@0 | 46 | /** The type of the annotation element. */ |
aoqi@0 | 47 | public Type type; |
aoqi@0 | 48 | |
aoqi@0 | 49 | public Attribute(Type type) { |
aoqi@0 | 50 | this.type = type; |
aoqi@0 | 51 | } |
aoqi@0 | 52 | |
aoqi@0 | 53 | public abstract void accept(Visitor v); |
aoqi@0 | 54 | |
aoqi@0 | 55 | public Object getValue() { |
aoqi@0 | 56 | throw new UnsupportedOperationException(); |
aoqi@0 | 57 | } |
aoqi@0 | 58 | |
aoqi@0 | 59 | public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) { |
aoqi@0 | 60 | throw new UnsupportedOperationException(); |
aoqi@0 | 61 | } |
aoqi@0 | 62 | |
aoqi@0 | 63 | public boolean isSynthesized() { |
aoqi@0 | 64 | return false; |
aoqi@0 | 65 | } |
aoqi@0 | 66 | |
aoqi@0 | 67 | public TypeAnnotationPosition getPosition() { return null; }; |
aoqi@0 | 68 | |
aoqi@0 | 69 | /** The value for an annotation element of primitive type or String. */ |
aoqi@0 | 70 | public static class Constant extends Attribute { |
aoqi@0 | 71 | public final Object value; |
aoqi@0 | 72 | public void accept(Visitor v) { v.visitConstant(this); } |
aoqi@0 | 73 | public Constant(Type type, Object value) { |
aoqi@0 | 74 | super(type); |
aoqi@0 | 75 | this.value = value; |
aoqi@0 | 76 | } |
aoqi@0 | 77 | public String toString() { |
aoqi@0 | 78 | return Constants.format(value, type); |
aoqi@0 | 79 | } |
aoqi@0 | 80 | public Object getValue() { |
aoqi@0 | 81 | return Constants.decode(value, type); |
aoqi@0 | 82 | } |
aoqi@0 | 83 | public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) { |
aoqi@0 | 84 | if (value instanceof String) |
aoqi@0 | 85 | return v.visitString((String) value, p); |
aoqi@0 | 86 | if (value instanceof Integer) { |
aoqi@0 | 87 | int i = (Integer) value; |
aoqi@0 | 88 | switch (type.getTag()) { |
aoqi@0 | 89 | case BOOLEAN: return v.visitBoolean(i != 0, p); |
aoqi@0 | 90 | case CHAR: return v.visitChar((char) i, p); |
aoqi@0 | 91 | case BYTE: return v.visitByte((byte) i, p); |
aoqi@0 | 92 | case SHORT: return v.visitShort((short) i, p); |
aoqi@0 | 93 | case INT: return v.visitInt(i, p); |
aoqi@0 | 94 | } |
aoqi@0 | 95 | } |
aoqi@0 | 96 | switch (type.getTag()) { |
aoqi@0 | 97 | case LONG: return v.visitLong((Long) value, p); |
aoqi@0 | 98 | case FLOAT: return v.visitFloat((Float) value, p); |
aoqi@0 | 99 | case DOUBLE: return v.visitDouble((Double) value, p); |
aoqi@0 | 100 | } |
aoqi@0 | 101 | throw new AssertionError("Bad annotation element value: " + value); |
aoqi@0 | 102 | } |
aoqi@0 | 103 | } |
aoqi@0 | 104 | |
aoqi@0 | 105 | /** The value for an annotation element of type java.lang.Class, |
aoqi@0 | 106 | * represented as a ClassSymbol. |
aoqi@0 | 107 | */ |
aoqi@0 | 108 | public static class Class extends Attribute { |
aoqi@0 | 109 | public final Type classType; |
aoqi@0 | 110 | public void accept(Visitor v) { v.visitClass(this); } |
aoqi@0 | 111 | public Class(Types types, Type type) { |
aoqi@0 | 112 | super(makeClassType(types, type)); |
aoqi@0 | 113 | this.classType = type; |
aoqi@0 | 114 | } |
aoqi@0 | 115 | static Type makeClassType(Types types, Type type) { |
aoqi@0 | 116 | Type arg = type.isPrimitive() |
aoqi@0 | 117 | ? types.boxedClass(type).type |
aoqi@0 | 118 | : types.erasure(type); |
aoqi@0 | 119 | return new Type.ClassType(types.syms.classType.getEnclosingType(), |
aoqi@0 | 120 | List.of(arg), |
aoqi@0 | 121 | types.syms.classType.tsym); |
aoqi@0 | 122 | } |
aoqi@0 | 123 | public String toString() { |
aoqi@0 | 124 | return classType + ".class"; |
aoqi@0 | 125 | } |
aoqi@0 | 126 | public Type getValue() { |
aoqi@0 | 127 | return classType; |
aoqi@0 | 128 | } |
aoqi@0 | 129 | public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) { |
aoqi@0 | 130 | return v.visitType(classType, p); |
aoqi@0 | 131 | } |
aoqi@0 | 132 | } |
aoqi@0 | 133 | |
aoqi@0 | 134 | /** A compound annotation element value, the type of which is an |
aoqi@0 | 135 | * attribute interface. |
aoqi@0 | 136 | */ |
aoqi@0 | 137 | public static class Compound extends Attribute implements AnnotationMirror { |
aoqi@0 | 138 | /** The attributes values, as pairs. Each pair contains a |
aoqi@0 | 139 | * reference to the accessing method in the attribute interface |
aoqi@0 | 140 | * and the value to be returned when that method is called to |
aoqi@0 | 141 | * access this attribute. |
aoqi@0 | 142 | */ |
aoqi@0 | 143 | public final List<Pair<MethodSymbol,Attribute>> values; |
aoqi@0 | 144 | |
aoqi@0 | 145 | private boolean synthesized = false; |
aoqi@0 | 146 | |
aoqi@0 | 147 | @Override |
aoqi@0 | 148 | public boolean isSynthesized() { |
aoqi@0 | 149 | return synthesized; |
aoqi@0 | 150 | } |
aoqi@0 | 151 | |
aoqi@0 | 152 | public void setSynthesized(boolean synthesized) { |
aoqi@0 | 153 | this.synthesized = synthesized; |
aoqi@0 | 154 | } |
aoqi@0 | 155 | |
aoqi@0 | 156 | public Compound(Type type, |
aoqi@0 | 157 | List<Pair<MethodSymbol,Attribute>> values) { |
aoqi@0 | 158 | super(type); |
aoqi@0 | 159 | this.values = values; |
aoqi@0 | 160 | } |
aoqi@0 | 161 | public void accept(Visitor v) { v.visitCompound(this); } |
aoqi@0 | 162 | |
aoqi@0 | 163 | /** |
aoqi@0 | 164 | * Returns a string representation of this annotation. |
aoqi@0 | 165 | * String is of one of the forms: |
aoqi@0 | 166 | * @com.example.foo(name1=val1, name2=val2) |
aoqi@0 | 167 | * @com.example.foo(val) |
aoqi@0 | 168 | * @com.example.foo |
aoqi@0 | 169 | * Omit parens for marker annotations, and omit "value=" when allowed. |
aoqi@0 | 170 | */ |
aoqi@0 | 171 | public String toString() { |
aoqi@0 | 172 | StringBuilder buf = new StringBuilder(); |
aoqi@0 | 173 | buf.append("@"); |
aoqi@0 | 174 | buf.append(type); |
aoqi@0 | 175 | int len = values.length(); |
aoqi@0 | 176 | if (len > 0) { |
aoqi@0 | 177 | buf.append('('); |
aoqi@0 | 178 | boolean first = true; |
aoqi@0 | 179 | for (Pair<MethodSymbol, Attribute> value : values) { |
aoqi@0 | 180 | if (!first) buf.append(", "); |
aoqi@0 | 181 | first = false; |
aoqi@0 | 182 | |
aoqi@0 | 183 | Name name = value.fst.name; |
aoqi@0 | 184 | if (len > 1 || name != name.table.names.value) { |
aoqi@0 | 185 | buf.append(name); |
aoqi@0 | 186 | buf.append('='); |
aoqi@0 | 187 | } |
aoqi@0 | 188 | buf.append(value.snd); |
aoqi@0 | 189 | } |
aoqi@0 | 190 | buf.append(')'); |
aoqi@0 | 191 | } |
aoqi@0 | 192 | return buf.toString(); |
aoqi@0 | 193 | } |
aoqi@0 | 194 | |
aoqi@0 | 195 | public Attribute member(Name member) { |
aoqi@0 | 196 | Pair<MethodSymbol,Attribute> res = getElemPair(member); |
aoqi@0 | 197 | return res == null ? null : res.snd; |
aoqi@0 | 198 | } |
aoqi@0 | 199 | |
aoqi@0 | 200 | private Pair<MethodSymbol, Attribute> getElemPair(Name member) { |
aoqi@0 | 201 | for (Pair<MethodSymbol,Attribute> pair : values) |
aoqi@0 | 202 | if (pair.fst.name == member) return pair; |
aoqi@0 | 203 | return null; |
aoqi@0 | 204 | } |
aoqi@0 | 205 | |
aoqi@0 | 206 | public Attribute.Compound getValue() { |
aoqi@0 | 207 | return this; |
aoqi@0 | 208 | } |
aoqi@0 | 209 | |
aoqi@0 | 210 | public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) { |
aoqi@0 | 211 | return v.visitAnnotation(this, p); |
aoqi@0 | 212 | } |
aoqi@0 | 213 | |
aoqi@0 | 214 | public DeclaredType getAnnotationType() { |
aoqi@0 | 215 | return (DeclaredType) type; |
aoqi@0 | 216 | } |
aoqi@0 | 217 | |
aoqi@0 | 218 | @Override |
aoqi@0 | 219 | public TypeAnnotationPosition getPosition() { |
aoqi@0 | 220 | if (values.size() != 0) { |
aoqi@0 | 221 | Name valueName = values.head.fst.name.table.names.value; |
aoqi@0 | 222 | Pair<MethodSymbol, Attribute> res = getElemPair(valueName); |
aoqi@0 | 223 | return res == null ? null : res.snd.getPosition(); |
aoqi@0 | 224 | } |
aoqi@0 | 225 | return null; |
aoqi@0 | 226 | } |
aoqi@0 | 227 | |
aoqi@0 | 228 | public Map<MethodSymbol, Attribute> getElementValues() { |
aoqi@0 | 229 | Map<MethodSymbol, Attribute> valmap = |
aoqi@0 | 230 | new LinkedHashMap<MethodSymbol, Attribute>(); |
aoqi@0 | 231 | for (Pair<MethodSymbol, Attribute> value : values) |
aoqi@0 | 232 | valmap.put(value.fst, value.snd); |
aoqi@0 | 233 | return valmap; |
aoqi@0 | 234 | } |
aoqi@0 | 235 | } |
aoqi@0 | 236 | |
aoqi@0 | 237 | public static class TypeCompound extends Compound { |
aoqi@0 | 238 | public TypeAnnotationPosition position; |
aoqi@0 | 239 | |
aoqi@0 | 240 | public TypeCompound(Compound compound, |
aoqi@0 | 241 | TypeAnnotationPosition position) { |
aoqi@0 | 242 | this(compound.type, compound.values, position); |
aoqi@0 | 243 | } |
aoqi@0 | 244 | public TypeCompound(Type type, |
aoqi@0 | 245 | List<Pair<MethodSymbol, Attribute>> values, |
aoqi@0 | 246 | TypeAnnotationPosition position) { |
aoqi@0 | 247 | super(type, values); |
aoqi@0 | 248 | this.position = position; |
aoqi@0 | 249 | } |
aoqi@0 | 250 | |
aoqi@0 | 251 | @Override |
aoqi@0 | 252 | public TypeAnnotationPosition getPosition() { |
aoqi@0 | 253 | if (hasUnknownPosition()) { |
aoqi@0 | 254 | position = super.getPosition(); |
aoqi@0 | 255 | } |
aoqi@0 | 256 | return position; |
aoqi@0 | 257 | } |
aoqi@0 | 258 | |
aoqi@0 | 259 | public boolean hasUnknownPosition() { |
aoqi@0 | 260 | return position.type == TargetType.UNKNOWN; |
aoqi@0 | 261 | } |
aoqi@0 | 262 | |
aoqi@0 | 263 | public boolean isContainerTypeCompound() { |
aoqi@0 | 264 | if (isSynthesized() && values.size() == 1) |
aoqi@0 | 265 | return getFirstEmbeddedTC() != null; |
aoqi@0 | 266 | return false; |
aoqi@0 | 267 | } |
aoqi@0 | 268 | |
aoqi@0 | 269 | private TypeCompound getFirstEmbeddedTC() { |
aoqi@0 | 270 | if (values.size() == 1) { |
aoqi@0 | 271 | Pair<MethodSymbol, Attribute> val = values.get(0); |
aoqi@0 | 272 | if (val.fst.getSimpleName().contentEquals("value") |
aoqi@0 | 273 | && val.snd instanceof Array) { |
aoqi@0 | 274 | Array arr = (Array) val.snd; |
aoqi@0 | 275 | if (arr.values.length != 0 |
aoqi@0 | 276 | && arr.values[0] instanceof Attribute.TypeCompound) |
aoqi@0 | 277 | return (Attribute.TypeCompound) arr.values[0]; |
aoqi@0 | 278 | } |
aoqi@0 | 279 | } |
aoqi@0 | 280 | return null; |
aoqi@0 | 281 | } |
aoqi@0 | 282 | |
aoqi@0 | 283 | public boolean tryFixPosition() { |
aoqi@0 | 284 | if (!isContainerTypeCompound()) |
aoqi@0 | 285 | return false; |
aoqi@0 | 286 | |
aoqi@0 | 287 | TypeCompound from = getFirstEmbeddedTC(); |
aoqi@0 | 288 | if (from != null && from.position != null && |
aoqi@0 | 289 | from.position.type != TargetType.UNKNOWN) { |
aoqi@0 | 290 | position = from.position; |
aoqi@0 | 291 | return true; |
aoqi@0 | 292 | } |
aoqi@0 | 293 | return false; |
aoqi@0 | 294 | } |
aoqi@0 | 295 | } |
aoqi@0 | 296 | |
aoqi@0 | 297 | /** The value for an annotation element of an array type. |
aoqi@0 | 298 | */ |
aoqi@0 | 299 | public static class Array extends Attribute { |
aoqi@0 | 300 | public final Attribute[] values; |
aoqi@0 | 301 | public Array(Type type, Attribute[] values) { |
aoqi@0 | 302 | super(type); |
aoqi@0 | 303 | this.values = values; |
aoqi@0 | 304 | } |
aoqi@0 | 305 | |
aoqi@0 | 306 | public Array(Type type, List<Attribute> values) { |
aoqi@0 | 307 | super(type); |
aoqi@0 | 308 | this.values = values.toArray(new Attribute[values.size()]); |
aoqi@0 | 309 | } |
aoqi@0 | 310 | |
aoqi@0 | 311 | public void accept(Visitor v) { v.visitArray(this); } |
aoqi@0 | 312 | public String toString() { |
aoqi@0 | 313 | StringBuilder buf = new StringBuilder(); |
aoqi@0 | 314 | buf.append('{'); |
aoqi@0 | 315 | boolean first = true; |
aoqi@0 | 316 | for (Attribute value : values) { |
aoqi@0 | 317 | if (!first) |
aoqi@0 | 318 | buf.append(", "); |
aoqi@0 | 319 | first = false; |
aoqi@0 | 320 | buf.append(value); |
aoqi@0 | 321 | } |
aoqi@0 | 322 | buf.append('}'); |
aoqi@0 | 323 | return buf.toString(); |
aoqi@0 | 324 | } |
aoqi@0 | 325 | public List<Attribute> getValue() { |
aoqi@0 | 326 | return List.from(values); |
aoqi@0 | 327 | } |
aoqi@0 | 328 | public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) { |
aoqi@0 | 329 | return v.visitArray(getValue(), p); |
aoqi@0 | 330 | } |
aoqi@0 | 331 | |
aoqi@0 | 332 | @Override |
aoqi@0 | 333 | public TypeAnnotationPosition getPosition() { |
aoqi@0 | 334 | if (values.length != 0) |
aoqi@0 | 335 | return values[0].getPosition(); |
aoqi@0 | 336 | else |
aoqi@0 | 337 | return null; |
aoqi@0 | 338 | } |
aoqi@0 | 339 | } |
aoqi@0 | 340 | |
aoqi@0 | 341 | /** The value for an annotation element of an enum type. |
aoqi@0 | 342 | */ |
aoqi@0 | 343 | public static class Enum extends Attribute { |
aoqi@0 | 344 | public VarSymbol value; |
aoqi@0 | 345 | public Enum(Type type, VarSymbol value) { |
aoqi@0 | 346 | super(type); |
aoqi@0 | 347 | this.value = Assert.checkNonNull(value); |
aoqi@0 | 348 | } |
aoqi@0 | 349 | public void accept(Visitor v) { v.visitEnum(this); } |
aoqi@0 | 350 | public String toString() { |
aoqi@0 | 351 | return value.enclClass() + "." + value; // qualified name |
aoqi@0 | 352 | } |
aoqi@0 | 353 | public VarSymbol getValue() { |
aoqi@0 | 354 | return value; |
aoqi@0 | 355 | } |
aoqi@0 | 356 | public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) { |
aoqi@0 | 357 | return v.visitEnumConstant(value, p); |
aoqi@0 | 358 | } |
aoqi@0 | 359 | } |
aoqi@0 | 360 | |
aoqi@0 | 361 | public static class Error extends Attribute { |
aoqi@0 | 362 | public Error(Type type) { |
aoqi@0 | 363 | super(type); |
aoqi@0 | 364 | } |
aoqi@0 | 365 | public void accept(Visitor v) { v.visitError(this); } |
aoqi@0 | 366 | public String toString() { |
aoqi@0 | 367 | return "<error>"; |
aoqi@0 | 368 | } |
aoqi@0 | 369 | public String getValue() { |
aoqi@0 | 370 | return toString(); |
aoqi@0 | 371 | } |
aoqi@0 | 372 | public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) { |
aoqi@0 | 373 | return v.visitString(toString(), p); |
aoqi@0 | 374 | } |
aoqi@0 | 375 | } |
aoqi@0 | 376 | |
aoqi@0 | 377 | public static class UnresolvedClass extends Error { |
aoqi@0 | 378 | public Type classType; |
aoqi@0 | 379 | public UnresolvedClass(Type type, Type classType) { |
aoqi@0 | 380 | super(type); |
aoqi@0 | 381 | this.classType = classType; |
aoqi@0 | 382 | } |
aoqi@0 | 383 | } |
aoqi@0 | 384 | |
aoqi@0 | 385 | /** A visitor type for dynamic dispatch on the kind of attribute value. */ |
aoqi@0 | 386 | public static interface Visitor { |
aoqi@0 | 387 | void visitConstant(Attribute.Constant value); |
aoqi@0 | 388 | void visitClass(Attribute.Class clazz); |
aoqi@0 | 389 | void visitCompound(Attribute.Compound compound); |
aoqi@0 | 390 | void visitArray(Attribute.Array array); |
aoqi@0 | 391 | void visitEnum(Attribute.Enum e); |
aoqi@0 | 392 | void visitError(Attribute.Error e); |
aoqi@0 | 393 | } |
aoqi@0 | 394 | |
aoqi@0 | 395 | /** A mirror of java.lang.annotation.RetentionPolicy. */ |
aoqi@0 | 396 | public static enum RetentionPolicy { |
aoqi@0 | 397 | SOURCE, |
aoqi@0 | 398 | CLASS, |
aoqi@0 | 399 | RUNTIME |
aoqi@0 | 400 | } |
aoqi@0 | 401 | } |