Mon, 16 Oct 2017 16:07:48 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1999, 2014, 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.lang.annotation.Annotation; |
aoqi@0 | 29 | import java.lang.annotation.Inherited; |
aoqi@0 | 30 | import java.util.Set; |
aoqi@0 | 31 | import java.util.concurrent.Callable; |
aoqi@0 | 32 | |
aoqi@0 | 33 | import javax.lang.model.element.*; |
aoqi@0 | 34 | import javax.tools.JavaFileObject; |
aoqi@0 | 35 | |
aoqi@0 | 36 | import com.sun.tools.javac.code.Type.*; |
aoqi@0 | 37 | import com.sun.tools.javac.comp.Annotate; |
aoqi@0 | 38 | import com.sun.tools.javac.comp.Attr; |
aoqi@0 | 39 | import com.sun.tools.javac.comp.AttrContext; |
aoqi@0 | 40 | import com.sun.tools.javac.comp.Env; |
aoqi@0 | 41 | import com.sun.tools.javac.jvm.*; |
aoqi@0 | 42 | import com.sun.tools.javac.util.*; |
aoqi@0 | 43 | import com.sun.tools.javac.util.Name; |
aoqi@0 | 44 | import static com.sun.tools.javac.code.Flags.*; |
aoqi@0 | 45 | import static com.sun.tools.javac.code.Kinds.*; |
aoqi@0 | 46 | import static com.sun.tools.javac.code.TypeTag.CLASS; |
aoqi@0 | 47 | import static com.sun.tools.javac.code.TypeTag.FORALL; |
aoqi@0 | 48 | import static com.sun.tools.javac.code.TypeTag.TYPEVAR; |
aoqi@0 | 49 | import com.sun.tools.javac.tree.JCTree.JCVariableDecl; |
aoqi@0 | 50 | |
aoqi@0 | 51 | /** Root class for Java symbols. It contains subclasses |
aoqi@0 | 52 | * for specific sorts of symbols, such as variables, methods and operators, |
aoqi@0 | 53 | * types, packages. Each subclass is represented as a static inner class |
aoqi@0 | 54 | * inside Symbol. |
aoqi@0 | 55 | * |
aoqi@0 | 56 | * <p><b>This is NOT part of any supported API. |
aoqi@0 | 57 | * If you write code that depends on this, you do so at your own risk. |
aoqi@0 | 58 | * This code and its internal interfaces are subject to change or |
aoqi@0 | 59 | * deletion without notice.</b> |
aoqi@0 | 60 | */ |
aoqi@0 | 61 | public abstract class Symbol extends AnnoConstruct implements Element { |
aoqi@0 | 62 | |
aoqi@0 | 63 | /** The kind of this symbol. |
aoqi@0 | 64 | * @see Kinds |
aoqi@0 | 65 | */ |
aoqi@0 | 66 | public int kind; |
aoqi@0 | 67 | |
aoqi@0 | 68 | /** The flags of this symbol. |
aoqi@0 | 69 | */ |
aoqi@0 | 70 | public long flags_field; |
aoqi@0 | 71 | |
aoqi@0 | 72 | /** An accessor method for the flags of this symbol. |
aoqi@0 | 73 | * Flags of class symbols should be accessed through the accessor |
aoqi@0 | 74 | * method to make sure that the class symbol is loaded. |
aoqi@0 | 75 | */ |
aoqi@0 | 76 | public long flags() { return flags_field; } |
aoqi@0 | 77 | |
aoqi@0 | 78 | /** The name of this symbol in Utf8 representation. |
aoqi@0 | 79 | */ |
aoqi@0 | 80 | public Name name; |
aoqi@0 | 81 | |
aoqi@0 | 82 | /** The type of this symbol. |
aoqi@0 | 83 | */ |
aoqi@0 | 84 | public Type type; |
aoqi@0 | 85 | |
aoqi@0 | 86 | /** The owner of this symbol. |
aoqi@0 | 87 | */ |
aoqi@0 | 88 | public Symbol owner; |
aoqi@0 | 89 | |
aoqi@0 | 90 | /** The completer of this symbol. |
aoqi@0 | 91 | */ |
aoqi@0 | 92 | public Completer completer; |
aoqi@0 | 93 | |
aoqi@0 | 94 | /** A cache for the type erasure of this symbol. |
aoqi@0 | 95 | */ |
aoqi@0 | 96 | public Type erasure_field; |
aoqi@0 | 97 | |
aoqi@0 | 98 | // <editor-fold defaultstate="collapsed" desc="annotations"> |
aoqi@0 | 99 | |
aoqi@0 | 100 | /** The attributes of this symbol are contained in this |
aoqi@0 | 101 | * SymbolMetadata. The SymbolMetadata instance is NOT immutable. |
aoqi@0 | 102 | */ |
aoqi@0 | 103 | protected SymbolMetadata metadata; |
aoqi@0 | 104 | |
aoqi@0 | 105 | |
aoqi@0 | 106 | /** An accessor method for the attributes of this symbol. |
aoqi@0 | 107 | * Attributes of class symbols should be accessed through the accessor |
aoqi@0 | 108 | * method to make sure that the class symbol is loaded. |
aoqi@0 | 109 | */ |
aoqi@0 | 110 | public List<Attribute.Compound> getRawAttributes() { |
aoqi@0 | 111 | return (metadata == null) |
aoqi@0 | 112 | ? List.<Attribute.Compound>nil() |
aoqi@0 | 113 | : metadata.getDeclarationAttributes(); |
aoqi@0 | 114 | } |
aoqi@0 | 115 | |
aoqi@0 | 116 | /** An accessor method for the type attributes of this symbol. |
aoqi@0 | 117 | * Attributes of class symbols should be accessed through the accessor |
aoqi@0 | 118 | * method to make sure that the class symbol is loaded. |
aoqi@0 | 119 | */ |
aoqi@0 | 120 | public List<Attribute.TypeCompound> getRawTypeAttributes() { |
aoqi@0 | 121 | return (metadata == null) |
aoqi@0 | 122 | ? List.<Attribute.TypeCompound>nil() |
aoqi@0 | 123 | : metadata.getTypeAttributes(); |
aoqi@0 | 124 | } |
aoqi@0 | 125 | |
aoqi@0 | 126 | /** Fetch a particular annotation from a symbol. */ |
aoqi@0 | 127 | public Attribute.Compound attribute(Symbol anno) { |
aoqi@0 | 128 | for (Attribute.Compound a : getRawAttributes()) { |
aoqi@0 | 129 | if (a.type.tsym == anno) return a; |
aoqi@0 | 130 | } |
aoqi@0 | 131 | return null; |
aoqi@0 | 132 | } |
aoqi@0 | 133 | |
aoqi@0 | 134 | public boolean annotationsPendingCompletion() { |
aoqi@0 | 135 | return metadata == null ? false : metadata.pendingCompletion(); |
aoqi@0 | 136 | } |
aoqi@0 | 137 | |
aoqi@0 | 138 | public void appendAttributes(List<Attribute.Compound> l) { |
aoqi@0 | 139 | if (l.nonEmpty()) { |
aoqi@0 | 140 | initedMetadata().append(l); |
aoqi@0 | 141 | } |
aoqi@0 | 142 | } |
aoqi@0 | 143 | |
aoqi@0 | 144 | public void appendClassInitTypeAttributes(List<Attribute.TypeCompound> l) { |
aoqi@0 | 145 | if (l.nonEmpty()) { |
aoqi@0 | 146 | initedMetadata().appendClassInitTypeAttributes(l); |
aoqi@0 | 147 | } |
aoqi@0 | 148 | } |
aoqi@0 | 149 | |
aoqi@0 | 150 | public void appendInitTypeAttributes(List<Attribute.TypeCompound> l) { |
aoqi@0 | 151 | if (l.nonEmpty()) { |
aoqi@0 | 152 | initedMetadata().appendInitTypeAttributes(l); |
aoqi@0 | 153 | } |
aoqi@0 | 154 | } |
aoqi@0 | 155 | |
aoqi@0 | 156 | public void appendTypeAttributesWithCompletion(final Annotate.AnnotateRepeatedContext<Attribute.TypeCompound> ctx) { |
aoqi@0 | 157 | initedMetadata().appendTypeAttributesWithCompletion(ctx); |
aoqi@0 | 158 | } |
aoqi@0 | 159 | |
aoqi@0 | 160 | public void appendUniqueTypeAttributes(List<Attribute.TypeCompound> l) { |
aoqi@0 | 161 | if (l.nonEmpty()) { |
aoqi@0 | 162 | initedMetadata().appendUniqueTypes(l); |
aoqi@0 | 163 | } |
aoqi@0 | 164 | } |
aoqi@0 | 165 | |
aoqi@0 | 166 | public List<Attribute.TypeCompound> getClassInitTypeAttributes() { |
aoqi@0 | 167 | return (metadata == null) |
aoqi@0 | 168 | ? List.<Attribute.TypeCompound>nil() |
aoqi@0 | 169 | : metadata.getClassInitTypeAttributes(); |
aoqi@0 | 170 | } |
aoqi@0 | 171 | |
aoqi@0 | 172 | public List<Attribute.TypeCompound> getInitTypeAttributes() { |
aoqi@0 | 173 | return (metadata == null) |
aoqi@0 | 174 | ? List.<Attribute.TypeCompound>nil() |
aoqi@0 | 175 | : metadata.getInitTypeAttributes(); |
aoqi@0 | 176 | } |
aoqi@0 | 177 | |
aoqi@0 | 178 | public List<Attribute.Compound> getDeclarationAttributes() { |
aoqi@0 | 179 | return (metadata == null) |
aoqi@0 | 180 | ? List.<Attribute.Compound>nil() |
aoqi@0 | 181 | : metadata.getDeclarationAttributes(); |
aoqi@0 | 182 | } |
aoqi@0 | 183 | |
aoqi@0 | 184 | public boolean hasAnnotations() { |
aoqi@0 | 185 | return (metadata != null && !metadata.isEmpty()); |
aoqi@0 | 186 | } |
aoqi@0 | 187 | |
aoqi@0 | 188 | public boolean hasTypeAnnotations() { |
aoqi@0 | 189 | return (metadata != null && !metadata.isTypesEmpty()); |
aoqi@0 | 190 | } |
aoqi@0 | 191 | |
aoqi@0 | 192 | public void prependAttributes(List<Attribute.Compound> l) { |
aoqi@0 | 193 | if (l.nonEmpty()) { |
aoqi@0 | 194 | initedMetadata().prepend(l); |
aoqi@0 | 195 | } |
aoqi@0 | 196 | } |
aoqi@0 | 197 | |
aoqi@0 | 198 | public void resetAnnotations() { |
aoqi@0 | 199 | initedMetadata().reset(); |
aoqi@0 | 200 | } |
aoqi@0 | 201 | |
aoqi@0 | 202 | public void setAttributes(Symbol other) { |
aoqi@0 | 203 | if (metadata != null || other.metadata != null) { |
aoqi@0 | 204 | initedMetadata().setAttributes(other.metadata); |
aoqi@0 | 205 | } |
aoqi@0 | 206 | } |
aoqi@0 | 207 | |
aoqi@0 | 208 | public void setDeclarationAttributes(List<Attribute.Compound> a) { |
aoqi@0 | 209 | if (metadata != null || a.nonEmpty()) { |
aoqi@0 | 210 | initedMetadata().setDeclarationAttributes(a); |
aoqi@0 | 211 | } |
aoqi@0 | 212 | } |
aoqi@0 | 213 | |
aoqi@0 | 214 | public void setDeclarationAttributesWithCompletion(final Annotate.AnnotateRepeatedContext<Attribute.Compound> ctx) { |
aoqi@0 | 215 | initedMetadata().setDeclarationAttributesWithCompletion(ctx); |
aoqi@0 | 216 | } |
aoqi@0 | 217 | |
aoqi@0 | 218 | public void setTypeAttributes(List<Attribute.TypeCompound> a) { |
aoqi@0 | 219 | if (metadata != null || a.nonEmpty()) { |
aoqi@0 | 220 | if (metadata == null) |
aoqi@0 | 221 | metadata = new SymbolMetadata(this); |
aoqi@0 | 222 | metadata.setTypeAttributes(a); |
aoqi@0 | 223 | } |
aoqi@0 | 224 | } |
aoqi@0 | 225 | |
aoqi@0 | 226 | private SymbolMetadata initedMetadata() { |
aoqi@0 | 227 | if (metadata == null) |
aoqi@0 | 228 | metadata = new SymbolMetadata(this); |
aoqi@0 | 229 | return metadata; |
aoqi@0 | 230 | } |
aoqi@0 | 231 | |
aoqi@0 | 232 | /** This method is intended for debugging only. */ |
aoqi@0 | 233 | public SymbolMetadata getMetadata() { |
aoqi@0 | 234 | return metadata; |
aoqi@0 | 235 | } |
aoqi@0 | 236 | |
aoqi@0 | 237 | // </editor-fold> |
aoqi@0 | 238 | |
aoqi@0 | 239 | /** Construct a symbol with given kind, flags, name, type and owner. |
aoqi@0 | 240 | */ |
aoqi@0 | 241 | public Symbol(int kind, long flags, Name name, Type type, Symbol owner) { |
aoqi@0 | 242 | this.kind = kind; |
aoqi@0 | 243 | this.flags_field = flags; |
aoqi@0 | 244 | this.type = type; |
aoqi@0 | 245 | this.owner = owner; |
aoqi@0 | 246 | this.completer = null; |
aoqi@0 | 247 | this.erasure_field = null; |
aoqi@0 | 248 | this.name = name; |
aoqi@0 | 249 | } |
aoqi@0 | 250 | |
aoqi@0 | 251 | /** Clone this symbol with new owner. |
aoqi@0 | 252 | * Legal only for fields and methods. |
aoqi@0 | 253 | */ |
aoqi@0 | 254 | public Symbol clone(Symbol newOwner) { |
aoqi@0 | 255 | throw new AssertionError(); |
aoqi@0 | 256 | } |
aoqi@0 | 257 | |
aoqi@0 | 258 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
aoqi@0 | 259 | return v.visitSymbol(this, p); |
aoqi@0 | 260 | } |
aoqi@0 | 261 | |
aoqi@0 | 262 | /** The Java source which this symbol represents. |
aoqi@0 | 263 | * A description of this symbol; overrides Object. |
aoqi@0 | 264 | */ |
aoqi@0 | 265 | public String toString() { |
aoqi@0 | 266 | return name.toString(); |
aoqi@0 | 267 | } |
aoqi@0 | 268 | |
aoqi@0 | 269 | /** A Java source description of the location of this symbol; used for |
aoqi@0 | 270 | * error reporting. |
aoqi@0 | 271 | * |
aoqi@0 | 272 | * @return null if the symbol is a package or a toplevel class defined in |
aoqi@0 | 273 | * the default package; otherwise, the owner symbol is returned |
aoqi@0 | 274 | */ |
aoqi@0 | 275 | public Symbol location() { |
aoqi@0 | 276 | if (owner.name == null || (owner.name.isEmpty() && |
aoqi@0 | 277 | (owner.flags() & BLOCK) == 0 && owner.kind != PCK && owner.kind != TYP)) { |
aoqi@0 | 278 | return null; |
aoqi@0 | 279 | } |
aoqi@0 | 280 | return owner; |
aoqi@0 | 281 | } |
aoqi@0 | 282 | |
aoqi@0 | 283 | public Symbol location(Type site, Types types) { |
aoqi@0 | 284 | if (owner.name == null || owner.name.isEmpty()) { |
aoqi@0 | 285 | return location(); |
aoqi@0 | 286 | } |
aoqi@0 | 287 | if (owner.type.hasTag(CLASS)) { |
aoqi@0 | 288 | Type ownertype = types.asOuterSuper(site, owner); |
aoqi@0 | 289 | if (ownertype != null) return ownertype.tsym; |
aoqi@0 | 290 | } |
aoqi@0 | 291 | return owner; |
aoqi@0 | 292 | } |
aoqi@0 | 293 | |
aoqi@0 | 294 | public Symbol baseSymbol() { |
aoqi@0 | 295 | return this; |
aoqi@0 | 296 | } |
aoqi@0 | 297 | |
aoqi@0 | 298 | /** The symbol's erased type. |
aoqi@0 | 299 | */ |
aoqi@0 | 300 | public Type erasure(Types types) { |
aoqi@0 | 301 | if (erasure_field == null) |
aoqi@0 | 302 | erasure_field = types.erasure(type); |
aoqi@0 | 303 | return erasure_field; |
aoqi@0 | 304 | } |
aoqi@0 | 305 | |
aoqi@0 | 306 | /** The external type of a symbol. This is the symbol's erased type |
aoqi@0 | 307 | * except for constructors of inner classes which get the enclosing |
aoqi@0 | 308 | * instance class added as first argument. |
aoqi@0 | 309 | */ |
aoqi@0 | 310 | public Type externalType(Types types) { |
aoqi@0 | 311 | Type t = erasure(types); |
aoqi@0 | 312 | if (name == name.table.names.init && owner.hasOuterInstance()) { |
aoqi@0 | 313 | Type outerThisType = types.erasure(owner.type.getEnclosingType()); |
aoqi@0 | 314 | return new MethodType(t.getParameterTypes().prepend(outerThisType), |
aoqi@0 | 315 | t.getReturnType(), |
aoqi@0 | 316 | t.getThrownTypes(), |
aoqi@0 | 317 | t.tsym); |
aoqi@0 | 318 | } else { |
aoqi@0 | 319 | return t; |
aoqi@0 | 320 | } |
aoqi@0 | 321 | } |
aoqi@0 | 322 | |
aoqi@0 | 323 | public boolean isDeprecated() { |
aoqi@0 | 324 | return (flags_field & DEPRECATED) != 0; |
aoqi@0 | 325 | } |
aoqi@0 | 326 | |
aoqi@0 | 327 | public boolean isStatic() { |
aoqi@0 | 328 | return |
aoqi@0 | 329 | (flags() & STATIC) != 0 || |
aoqi@0 | 330 | (owner.flags() & INTERFACE) != 0 && kind != MTH && |
aoqi@0 | 331 | name != name.table.names._this; |
aoqi@0 | 332 | } |
aoqi@0 | 333 | |
aoqi@0 | 334 | public boolean isInterface() { |
aoqi@0 | 335 | return (flags() & INTERFACE) != 0; |
aoqi@0 | 336 | } |
aoqi@0 | 337 | |
aoqi@0 | 338 | public boolean isPrivate() { |
aoqi@0 | 339 | return (flags_field & Flags.AccessFlags) == PRIVATE; |
aoqi@0 | 340 | } |
aoqi@0 | 341 | |
aoqi@0 | 342 | public boolean isEnum() { |
aoqi@0 | 343 | return (flags() & ENUM) != 0; |
aoqi@0 | 344 | } |
aoqi@0 | 345 | |
aoqi@0 | 346 | /** Is this symbol declared (directly or indirectly) local |
aoqi@0 | 347 | * to a method or variable initializer? |
aoqi@0 | 348 | * Also includes fields of inner classes which are in |
aoqi@0 | 349 | * turn local to a method or variable initializer. |
aoqi@0 | 350 | */ |
aoqi@0 | 351 | public boolean isLocal() { |
aoqi@0 | 352 | return |
aoqi@0 | 353 | (owner.kind & (VAR | MTH)) != 0 || |
aoqi@0 | 354 | (owner.kind == TYP && owner.isLocal()); |
aoqi@0 | 355 | } |
aoqi@0 | 356 | |
aoqi@0 | 357 | /** Has this symbol an empty name? This includes anonymous |
aoqi@0 | 358 | * inner classes. |
aoqi@0 | 359 | */ |
aoqi@0 | 360 | public boolean isAnonymous() { |
aoqi@0 | 361 | return name.isEmpty(); |
aoqi@0 | 362 | } |
aoqi@0 | 363 | |
aoqi@0 | 364 | /** Is this symbol a constructor? |
aoqi@0 | 365 | */ |
aoqi@0 | 366 | public boolean isConstructor() { |
aoqi@0 | 367 | return name == name.table.names.init; |
aoqi@0 | 368 | } |
aoqi@0 | 369 | |
aoqi@0 | 370 | /** The fully qualified name of this symbol. |
aoqi@0 | 371 | * This is the same as the symbol's name except for class symbols, |
aoqi@0 | 372 | * which are handled separately. |
aoqi@0 | 373 | */ |
aoqi@0 | 374 | public Name getQualifiedName() { |
aoqi@0 | 375 | return name; |
aoqi@0 | 376 | } |
aoqi@0 | 377 | |
aoqi@0 | 378 | /** The fully qualified name of this symbol after converting to flat |
aoqi@0 | 379 | * representation. This is the same as the symbol's name except for |
aoqi@0 | 380 | * class symbols, which are handled separately. |
aoqi@0 | 381 | */ |
aoqi@0 | 382 | public Name flatName() { |
aoqi@0 | 383 | return getQualifiedName(); |
aoqi@0 | 384 | } |
aoqi@0 | 385 | |
aoqi@0 | 386 | /** If this is a class or package, its members, otherwise null. |
aoqi@0 | 387 | */ |
aoqi@0 | 388 | public Scope members() { |
aoqi@0 | 389 | return null; |
aoqi@0 | 390 | } |
aoqi@0 | 391 | |
aoqi@0 | 392 | /** A class is an inner class if it it has an enclosing instance class. |
aoqi@0 | 393 | */ |
aoqi@0 | 394 | public boolean isInner() { |
aoqi@0 | 395 | return kind == TYP && type.getEnclosingType().hasTag(CLASS); |
aoqi@0 | 396 | } |
aoqi@0 | 397 | |
aoqi@0 | 398 | /** An inner class has an outer instance if it is not an interface |
aoqi@0 | 399 | * it has an enclosing instance class which might be referenced from the class. |
aoqi@0 | 400 | * Nested classes can see instance members of their enclosing class. |
aoqi@0 | 401 | * Their constructors carry an additional this$n parameter, inserted |
aoqi@0 | 402 | * implicitly by the compiler. |
aoqi@0 | 403 | * |
aoqi@0 | 404 | * @see #isInner |
aoqi@0 | 405 | */ |
aoqi@0 | 406 | public boolean hasOuterInstance() { |
aoqi@0 | 407 | return |
aoqi@0 | 408 | type.getEnclosingType().hasTag(CLASS) && (flags() & (INTERFACE | NOOUTERTHIS)) == 0; |
aoqi@0 | 409 | } |
aoqi@0 | 410 | |
aoqi@0 | 411 | /** The closest enclosing class of this symbol's declaration. |
aoqi@0 | 412 | */ |
aoqi@0 | 413 | public ClassSymbol enclClass() { |
aoqi@0 | 414 | Symbol c = this; |
aoqi@0 | 415 | while (c != null && |
aoqi@0 | 416 | ((c.kind & TYP) == 0 || !c.type.hasTag(CLASS))) { |
aoqi@0 | 417 | c = c.owner; |
aoqi@0 | 418 | } |
aoqi@0 | 419 | return (ClassSymbol)c; |
aoqi@0 | 420 | } |
aoqi@0 | 421 | |
aoqi@0 | 422 | /** The outermost class which indirectly owns this symbol. |
aoqi@0 | 423 | */ |
aoqi@0 | 424 | public ClassSymbol outermostClass() { |
aoqi@0 | 425 | Symbol sym = this; |
aoqi@0 | 426 | Symbol prev = null; |
aoqi@0 | 427 | while (sym.kind != PCK) { |
aoqi@0 | 428 | prev = sym; |
aoqi@0 | 429 | sym = sym.owner; |
aoqi@0 | 430 | } |
aoqi@0 | 431 | return (ClassSymbol) prev; |
aoqi@0 | 432 | } |
aoqi@0 | 433 | |
aoqi@0 | 434 | /** The package which indirectly owns this symbol. |
aoqi@0 | 435 | */ |
aoqi@0 | 436 | public PackageSymbol packge() { |
aoqi@0 | 437 | Symbol sym = this; |
aoqi@0 | 438 | while (sym.kind != PCK) { |
aoqi@0 | 439 | sym = sym.owner; |
aoqi@0 | 440 | } |
aoqi@0 | 441 | return (PackageSymbol) sym; |
aoqi@0 | 442 | } |
aoqi@0 | 443 | |
aoqi@0 | 444 | /** Is this symbol a subclass of `base'? Only defined for ClassSymbols. |
aoqi@0 | 445 | */ |
aoqi@0 | 446 | public boolean isSubClass(Symbol base, Types types) { |
aoqi@0 | 447 | throw new AssertionError("isSubClass " + this); |
aoqi@0 | 448 | } |
aoqi@0 | 449 | |
aoqi@0 | 450 | /** Fully check membership: hierarchy, protection, and hiding. |
aoqi@0 | 451 | * Does not exclude methods not inherited due to overriding. |
aoqi@0 | 452 | */ |
aoqi@0 | 453 | public boolean isMemberOf(TypeSymbol clazz, Types types) { |
aoqi@0 | 454 | return |
aoqi@0 | 455 | owner == clazz || |
aoqi@0 | 456 | clazz.isSubClass(owner, types) && |
aoqi@0 | 457 | isInheritedIn(clazz, types) && |
aoqi@0 | 458 | !hiddenIn((ClassSymbol)clazz, types); |
aoqi@0 | 459 | } |
aoqi@0 | 460 | |
aoqi@0 | 461 | /** Is this symbol the same as or enclosed by the given class? */ |
aoqi@0 | 462 | public boolean isEnclosedBy(ClassSymbol clazz) { |
aoqi@0 | 463 | for (Symbol sym = this; sym.kind != PCK; sym = sym.owner) |
aoqi@0 | 464 | if (sym == clazz) return true; |
aoqi@0 | 465 | return false; |
aoqi@0 | 466 | } |
aoqi@0 | 467 | |
aoqi@0 | 468 | private boolean hiddenIn(ClassSymbol clazz, Types types) { |
aoqi@0 | 469 | Symbol sym = hiddenInInternal(clazz, types); |
aoqi@0 | 470 | Assert.check(sym != null, "the result of hiddenInInternal() can't be null"); |
aoqi@0 | 471 | /* If we find the current symbol then there is no symbol hiding it |
aoqi@0 | 472 | */ |
aoqi@0 | 473 | return sym != this; |
aoqi@0 | 474 | } |
aoqi@0 | 475 | |
aoqi@0 | 476 | /** This method looks in the supertypes graph that has the current class as the |
aoqi@0 | 477 | * initial node, till it finds the current symbol or another symbol that hides it. |
aoqi@0 | 478 | * If the current class has more than one supertype (extends one class and |
aoqi@0 | 479 | * implements one or more interfaces) then null can be returned, meaning that |
aoqi@0 | 480 | * a wrong path in the supertypes graph was selected. Null can only be returned |
aoqi@0 | 481 | * as a temporary value, as a result of the recursive call. |
aoqi@0 | 482 | */ |
aoqi@0 | 483 | private Symbol hiddenInInternal(ClassSymbol currentClass, Types types) { |
aoqi@0 | 484 | if (currentClass == owner) { |
aoqi@0 | 485 | return this; |
aoqi@0 | 486 | } |
aoqi@0 | 487 | Scope.Entry e = currentClass.members().lookup(name); |
aoqi@0 | 488 | while (e.scope != null) { |
aoqi@0 | 489 | if (e.sym.kind == kind && |
aoqi@0 | 490 | (kind != MTH || |
aoqi@0 | 491 | (e.sym.flags() & STATIC) != 0 && |
aoqi@0 | 492 | types.isSubSignature(e.sym.type, type))) { |
aoqi@0 | 493 | return e.sym; |
aoqi@0 | 494 | } |
aoqi@0 | 495 | e = e.next(); |
aoqi@0 | 496 | } |
aoqi@0 | 497 | Symbol hiddenSym = null; |
aoqi@0 | 498 | for (Type st : types.interfaces(currentClass.type) |
aoqi@0 | 499 | .prepend(types.supertype(currentClass.type))) { |
aoqi@0 | 500 | if (st != null && (st.hasTag(CLASS))) { |
aoqi@0 | 501 | Symbol sym = hiddenInInternal((ClassSymbol)st.tsym, types); |
aoqi@0 | 502 | if (sym == this) { |
aoqi@0 | 503 | return this; |
aoqi@0 | 504 | } else if (sym != null) { |
aoqi@0 | 505 | hiddenSym = sym; |
aoqi@0 | 506 | } |
aoqi@0 | 507 | } |
aoqi@0 | 508 | } |
aoqi@0 | 509 | return hiddenSym; |
aoqi@0 | 510 | } |
aoqi@0 | 511 | |
aoqi@0 | 512 | /** Is this symbol inherited into a given class? |
aoqi@0 | 513 | * PRE: If symbol's owner is a interface, |
aoqi@0 | 514 | * it is already assumed that the interface is a superinterface |
aoqi@0 | 515 | * of given class. |
aoqi@0 | 516 | * @param clazz The class for which we want to establish membership. |
aoqi@0 | 517 | * This must be a subclass of the member's owner. |
aoqi@0 | 518 | */ |
aoqi@0 | 519 | public boolean isInheritedIn(Symbol clazz, Types types) { |
aoqi@0 | 520 | switch ((int)(flags_field & Flags.AccessFlags)) { |
aoqi@0 | 521 | default: // error recovery |
aoqi@0 | 522 | case PUBLIC: |
aoqi@0 | 523 | return true; |
aoqi@0 | 524 | case PRIVATE: |
aoqi@0 | 525 | return this.owner == clazz; |
aoqi@0 | 526 | case PROTECTED: |
aoqi@0 | 527 | // we model interfaces as extending Object |
aoqi@0 | 528 | return (clazz.flags() & INTERFACE) == 0; |
aoqi@0 | 529 | case 0: |
aoqi@0 | 530 | PackageSymbol thisPackage = this.packge(); |
aoqi@0 | 531 | for (Symbol sup = clazz; |
aoqi@0 | 532 | sup != null && sup != this.owner; |
aoqi@0 | 533 | sup = types.supertype(sup.type).tsym) { |
aoqi@0 | 534 | while (sup.type.hasTag(TYPEVAR)) |
aoqi@0 | 535 | sup = sup.type.getUpperBound().tsym; |
aoqi@0 | 536 | if (sup.type.isErroneous()) |
aoqi@0 | 537 | return true; // error recovery |
aoqi@0 | 538 | if ((sup.flags() & COMPOUND) != 0) |
aoqi@0 | 539 | continue; |
aoqi@0 | 540 | if (sup.packge() != thisPackage) |
aoqi@0 | 541 | return false; |
aoqi@0 | 542 | } |
aoqi@0 | 543 | return (clazz.flags() & INTERFACE) == 0; |
aoqi@0 | 544 | } |
aoqi@0 | 545 | } |
aoqi@0 | 546 | |
aoqi@0 | 547 | /** The (variable or method) symbol seen as a member of given |
aoqi@0 | 548 | * class type`site' (this might change the symbol's type). |
aoqi@0 | 549 | * This is used exclusively for producing diagnostics. |
aoqi@0 | 550 | */ |
aoqi@0 | 551 | public Symbol asMemberOf(Type site, Types types) { |
aoqi@0 | 552 | throw new AssertionError(); |
aoqi@0 | 553 | } |
aoqi@0 | 554 | |
aoqi@0 | 555 | /** Does this method symbol override `other' symbol, when both are seen as |
aoqi@0 | 556 | * members of class `origin'? It is assumed that _other is a member |
aoqi@0 | 557 | * of origin. |
aoqi@0 | 558 | * |
aoqi@0 | 559 | * It is assumed that both symbols have the same name. The static |
aoqi@0 | 560 | * modifier is ignored for this test. |
aoqi@0 | 561 | * |
aoqi@0 | 562 | * See JLS 8.4.6.1 (without transitivity) and 8.4.6.4 |
aoqi@0 | 563 | */ |
aoqi@0 | 564 | public boolean overrides(Symbol _other, TypeSymbol origin, Types types, boolean checkResult) { |
aoqi@0 | 565 | return false; |
aoqi@0 | 566 | } |
aoqi@0 | 567 | |
aoqi@0 | 568 | /** Complete the elaboration of this symbol's definition. |
aoqi@0 | 569 | */ |
aoqi@0 | 570 | public void complete() throws CompletionFailure { |
aoqi@0 | 571 | if (completer != null) { |
aoqi@0 | 572 | Completer c = completer; |
aoqi@0 | 573 | completer = null; |
aoqi@0 | 574 | c.complete(this); |
aoqi@0 | 575 | } |
aoqi@0 | 576 | } |
aoqi@0 | 577 | |
aoqi@0 | 578 | /** True if the symbol represents an entity that exists. |
aoqi@0 | 579 | */ |
aoqi@0 | 580 | public boolean exists() { |
aoqi@0 | 581 | return true; |
aoqi@0 | 582 | } |
aoqi@0 | 583 | |
aoqi@0 | 584 | public Type asType() { |
aoqi@0 | 585 | return type; |
aoqi@0 | 586 | } |
aoqi@0 | 587 | |
aoqi@0 | 588 | public Symbol getEnclosingElement() { |
aoqi@0 | 589 | return owner; |
aoqi@0 | 590 | } |
aoqi@0 | 591 | |
aoqi@0 | 592 | public ElementKind getKind() { |
aoqi@0 | 593 | return ElementKind.OTHER; // most unkind |
aoqi@0 | 594 | } |
aoqi@0 | 595 | |
aoqi@0 | 596 | public Set<Modifier> getModifiers() { |
aoqi@0 | 597 | return Flags.asModifierSet(flags()); |
aoqi@0 | 598 | } |
aoqi@0 | 599 | |
aoqi@0 | 600 | public Name getSimpleName() { |
aoqi@0 | 601 | return name; |
aoqi@0 | 602 | } |
aoqi@0 | 603 | |
aoqi@0 | 604 | /** |
aoqi@0 | 605 | * This is the implementation for {@code |
aoqi@0 | 606 | * javax.lang.model.element.Element.getAnnotationMirrors()}. |
aoqi@0 | 607 | */ |
aoqi@0 | 608 | @Override |
aoqi@0 | 609 | public List<Attribute.Compound> getAnnotationMirrors() { |
aoqi@0 | 610 | return getRawAttributes(); |
aoqi@0 | 611 | } |
aoqi@0 | 612 | |
aoqi@0 | 613 | |
aoqi@0 | 614 | // TODO: getEnclosedElements should return a javac List, fix in FilteredMemberList |
aoqi@0 | 615 | public java.util.List<Symbol> getEnclosedElements() { |
aoqi@0 | 616 | return List.nil(); |
aoqi@0 | 617 | } |
aoqi@0 | 618 | |
aoqi@0 | 619 | public List<TypeVariableSymbol> getTypeParameters() { |
aoqi@0 | 620 | ListBuffer<TypeVariableSymbol> l = new ListBuffer<>(); |
aoqi@0 | 621 | for (Type t : type.getTypeArguments()) { |
aoqi@0 | 622 | Assert.check(t.tsym.getKind() == ElementKind.TYPE_PARAMETER); |
aoqi@0 | 623 | l.append((TypeVariableSymbol)t.tsym); |
aoqi@0 | 624 | } |
aoqi@0 | 625 | return l.toList(); |
aoqi@0 | 626 | } |
aoqi@0 | 627 | |
aoqi@0 | 628 | public static class DelegatedSymbol<T extends Symbol> extends Symbol { |
aoqi@0 | 629 | protected T other; |
aoqi@0 | 630 | public DelegatedSymbol(T other) { |
aoqi@0 | 631 | super(other.kind, other.flags_field, other.name, other.type, other.owner); |
aoqi@0 | 632 | this.other = other; |
aoqi@0 | 633 | } |
aoqi@0 | 634 | public String toString() { return other.toString(); } |
aoqi@0 | 635 | public Symbol location() { return other.location(); } |
aoqi@0 | 636 | public Symbol location(Type site, Types types) { return other.location(site, types); } |
aoqi@0 | 637 | public Symbol baseSymbol() { return other; } |
aoqi@0 | 638 | public Type erasure(Types types) { return other.erasure(types); } |
aoqi@0 | 639 | public Type externalType(Types types) { return other.externalType(types); } |
aoqi@0 | 640 | public boolean isLocal() { return other.isLocal(); } |
aoqi@0 | 641 | public boolean isConstructor() { return other.isConstructor(); } |
aoqi@0 | 642 | public Name getQualifiedName() { return other.getQualifiedName(); } |
aoqi@0 | 643 | public Name flatName() { return other.flatName(); } |
aoqi@0 | 644 | public Scope members() { return other.members(); } |
aoqi@0 | 645 | public boolean isInner() { return other.isInner(); } |
aoqi@0 | 646 | public boolean hasOuterInstance() { return other.hasOuterInstance(); } |
aoqi@0 | 647 | public ClassSymbol enclClass() { return other.enclClass(); } |
aoqi@0 | 648 | public ClassSymbol outermostClass() { return other.outermostClass(); } |
aoqi@0 | 649 | public PackageSymbol packge() { return other.packge(); } |
aoqi@0 | 650 | public boolean isSubClass(Symbol base, Types types) { return other.isSubClass(base, types); } |
aoqi@0 | 651 | public boolean isMemberOf(TypeSymbol clazz, Types types) { return other.isMemberOf(clazz, types); } |
aoqi@0 | 652 | public boolean isEnclosedBy(ClassSymbol clazz) { return other.isEnclosedBy(clazz); } |
aoqi@0 | 653 | public boolean isInheritedIn(Symbol clazz, Types types) { return other.isInheritedIn(clazz, types); } |
aoqi@0 | 654 | public Symbol asMemberOf(Type site, Types types) { return other.asMemberOf(site, types); } |
aoqi@0 | 655 | public void complete() throws CompletionFailure { other.complete(); } |
aoqi@0 | 656 | |
aoqi@0 | 657 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
aoqi@0 | 658 | return other.accept(v, p); |
aoqi@0 | 659 | } |
aoqi@0 | 660 | |
aoqi@0 | 661 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
aoqi@0 | 662 | return v.visitSymbol(other, p); |
aoqi@0 | 663 | } |
aoqi@0 | 664 | |
aoqi@0 | 665 | public T getUnderlyingSymbol() { |
aoqi@0 | 666 | return other; |
aoqi@0 | 667 | } |
aoqi@0 | 668 | } |
aoqi@0 | 669 | |
aoqi@0 | 670 | /** A base class for Symbols representing types. |
aoqi@0 | 671 | */ |
aoqi@0 | 672 | public static abstract class TypeSymbol extends Symbol { |
aoqi@0 | 673 | public TypeSymbol(int kind, long flags, Name name, Type type, Symbol owner) { |
aoqi@0 | 674 | super(kind, flags, name, type, owner); |
aoqi@0 | 675 | } |
aoqi@0 | 676 | /** form a fully qualified name from a name and an owner |
aoqi@0 | 677 | */ |
aoqi@0 | 678 | static public Name formFullName(Name name, Symbol owner) { |
aoqi@0 | 679 | if (owner == null) return name; |
aoqi@0 | 680 | if (((owner.kind != ERR)) && |
aoqi@0 | 681 | ((owner.kind & (VAR | MTH)) != 0 |
aoqi@0 | 682 | || (owner.kind == TYP && owner.type.hasTag(TYPEVAR)) |
aoqi@0 | 683 | )) return name; |
aoqi@0 | 684 | Name prefix = owner.getQualifiedName(); |
aoqi@0 | 685 | if (prefix == null || prefix == prefix.table.names.empty) |
aoqi@0 | 686 | return name; |
aoqi@0 | 687 | else return prefix.append('.', name); |
aoqi@0 | 688 | } |
aoqi@0 | 689 | |
aoqi@0 | 690 | /** form a fully qualified name from a name and an owner, after |
aoqi@0 | 691 | * converting to flat representation |
aoqi@0 | 692 | */ |
aoqi@0 | 693 | static public Name formFlatName(Name name, Symbol owner) { |
aoqi@0 | 694 | if (owner == null || |
aoqi@0 | 695 | (owner.kind & (VAR | MTH)) != 0 |
aoqi@0 | 696 | || (owner.kind == TYP && owner.type.hasTag(TYPEVAR)) |
aoqi@0 | 697 | ) return name; |
aoqi@0 | 698 | char sep = owner.kind == TYP ? '$' : '.'; |
aoqi@0 | 699 | Name prefix = owner.flatName(); |
aoqi@0 | 700 | if (prefix == null || prefix == prefix.table.names.empty) |
aoqi@0 | 701 | return name; |
aoqi@0 | 702 | else return prefix.append(sep, name); |
aoqi@0 | 703 | } |
aoqi@0 | 704 | |
aoqi@0 | 705 | /** |
aoqi@0 | 706 | * A partial ordering between type symbols that refines the |
aoqi@0 | 707 | * class inheritance graph. |
aoqi@0 | 708 | * |
aoqi@0 | 709 | * Type variables always precede other kinds of symbols. |
aoqi@0 | 710 | */ |
aoqi@0 | 711 | public final boolean precedes(TypeSymbol that, Types types) { |
aoqi@0 | 712 | if (this == that) |
aoqi@0 | 713 | return false; |
aoqi@0 | 714 | if (type.hasTag(that.type.getTag())) { |
aoqi@0 | 715 | if (type.hasTag(CLASS)) { |
aoqi@0 | 716 | return |
aoqi@0 | 717 | types.rank(that.type) < types.rank(this.type) || |
aoqi@0 | 718 | types.rank(that.type) == types.rank(this.type) && |
aoqi@0 | 719 | that.getQualifiedName().compareTo(this.getQualifiedName()) < 0; |
aoqi@0 | 720 | } else if (type.hasTag(TYPEVAR)) { |
aoqi@0 | 721 | return types.isSubtype(this.type, that.type); |
aoqi@0 | 722 | } |
aoqi@0 | 723 | } |
aoqi@0 | 724 | return type.hasTag(TYPEVAR); |
aoqi@0 | 725 | } |
aoqi@0 | 726 | |
aoqi@0 | 727 | @Override |
aoqi@0 | 728 | public java.util.List<Symbol> getEnclosedElements() { |
aoqi@0 | 729 | List<Symbol> list = List.nil(); |
aoqi@0 | 730 | if (kind == TYP && type.hasTag(TYPEVAR)) { |
aoqi@0 | 731 | return list; |
aoqi@0 | 732 | } |
aoqi@0 | 733 | for (Scope.Entry e = members().elems; e != null; e = e.sibling) { |
aoqi@0 | 734 | if (e.sym != null && (e.sym.flags() & SYNTHETIC) == 0 && e.sym.owner == this) |
aoqi@0 | 735 | list = list.prepend(e.sym); |
aoqi@0 | 736 | } |
aoqi@0 | 737 | return list; |
aoqi@0 | 738 | } |
aoqi@0 | 739 | |
aoqi@0 | 740 | @Override |
aoqi@0 | 741 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
aoqi@0 | 742 | return v.visitTypeSymbol(this, p); |
aoqi@0 | 743 | } |
aoqi@0 | 744 | } |
aoqi@0 | 745 | |
aoqi@0 | 746 | /** |
aoqi@0 | 747 | * Type variables are represented by instances of this class. |
aoqi@0 | 748 | */ |
aoqi@0 | 749 | public static class TypeVariableSymbol |
aoqi@0 | 750 | extends TypeSymbol implements TypeParameterElement { |
aoqi@0 | 751 | |
aoqi@0 | 752 | public TypeVariableSymbol(long flags, Name name, Type type, Symbol owner) { |
aoqi@0 | 753 | super(TYP, flags, name, type, owner); |
aoqi@0 | 754 | } |
aoqi@0 | 755 | |
aoqi@0 | 756 | public ElementKind getKind() { |
aoqi@0 | 757 | return ElementKind.TYPE_PARAMETER; |
aoqi@0 | 758 | } |
aoqi@0 | 759 | |
aoqi@0 | 760 | @Override |
aoqi@0 | 761 | public Symbol getGenericElement() { |
aoqi@0 | 762 | return owner; |
aoqi@0 | 763 | } |
aoqi@0 | 764 | |
aoqi@0 | 765 | public List<Type> getBounds() { |
aoqi@0 | 766 | TypeVar t = (TypeVar)type; |
aoqi@0 | 767 | Type bound = t.getUpperBound(); |
aoqi@0 | 768 | if (!bound.isCompound()) |
aoqi@0 | 769 | return List.of(bound); |
aoqi@0 | 770 | ClassType ct = (ClassType)bound; |
aoqi@0 | 771 | if (!ct.tsym.erasure_field.isInterface()) { |
aoqi@0 | 772 | return ct.interfaces_field.prepend(ct.supertype_field); |
aoqi@0 | 773 | } else { |
aoqi@0 | 774 | // No superclass was given in bounds. |
aoqi@0 | 775 | // In this case, supertype is Object, erasure is first interface. |
aoqi@0 | 776 | return ct.interfaces_field; |
aoqi@0 | 777 | } |
aoqi@0 | 778 | } |
aoqi@0 | 779 | |
aoqi@0 | 780 | @Override |
aoqi@0 | 781 | public List<Attribute.Compound> getAnnotationMirrors() { |
aoqi@0 | 782 | // Declaration annotations on type variables are stored in type attributes |
aoqi@0 | 783 | // on the owner of the TypeVariableSymbol |
aoqi@0 | 784 | List<Attribute.TypeCompound> candidates = owner.getRawTypeAttributes(); |
aoqi@0 | 785 | int index = owner.getTypeParameters().indexOf(this); |
aoqi@0 | 786 | List<Attribute.Compound> res = List.nil(); |
aoqi@0 | 787 | for (Attribute.TypeCompound a : candidates) { |
aoqi@0 | 788 | if (isCurrentSymbolsAnnotation(a, index)) |
aoqi@0 | 789 | res = res.prepend(a); |
aoqi@0 | 790 | } |
aoqi@0 | 791 | |
aoqi@0 | 792 | return res.reverse(); |
aoqi@0 | 793 | } |
aoqi@0 | 794 | |
aoqi@0 | 795 | // Helper to getAnnotation[s] |
aoqi@0 | 796 | @Override |
aoqi@0 | 797 | public <A extends Annotation> Attribute.Compound getAttribute(Class<A> annoType) { |
aoqi@0 | 798 | String name = annoType.getName(); |
aoqi@0 | 799 | |
aoqi@0 | 800 | // Declaration annotations on type variables are stored in type attributes |
aoqi@0 | 801 | // on the owner of the TypeVariableSymbol |
aoqi@0 | 802 | List<Attribute.TypeCompound> candidates = owner.getRawTypeAttributes(); |
aoqi@0 | 803 | int index = owner.getTypeParameters().indexOf(this); |
aoqi@0 | 804 | for (Attribute.TypeCompound anno : candidates) |
aoqi@0 | 805 | if (isCurrentSymbolsAnnotation(anno, index) && |
aoqi@0 | 806 | name.contentEquals(anno.type.tsym.flatName())) |
aoqi@0 | 807 | return anno; |
aoqi@0 | 808 | |
aoqi@0 | 809 | return null; |
aoqi@0 | 810 | } |
aoqi@0 | 811 | //where: |
aoqi@0 | 812 | boolean isCurrentSymbolsAnnotation(Attribute.TypeCompound anno, int index) { |
aoqi@0 | 813 | return (anno.position.type == TargetType.CLASS_TYPE_PARAMETER || |
aoqi@0 | 814 | anno.position.type == TargetType.METHOD_TYPE_PARAMETER) && |
aoqi@0 | 815 | anno.position.parameter_index == index; |
aoqi@0 | 816 | } |
aoqi@0 | 817 | |
aoqi@0 | 818 | |
aoqi@0 | 819 | @Override |
aoqi@0 | 820 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
aoqi@0 | 821 | return v.visitTypeParameter(this, p); |
aoqi@0 | 822 | } |
aoqi@0 | 823 | } |
aoqi@0 | 824 | |
aoqi@0 | 825 | /** A class for package symbols |
aoqi@0 | 826 | */ |
aoqi@0 | 827 | public static class PackageSymbol extends TypeSymbol |
aoqi@0 | 828 | implements PackageElement { |
aoqi@0 | 829 | |
aoqi@0 | 830 | public Scope members_field; |
aoqi@0 | 831 | public Name fullname; |
aoqi@0 | 832 | public ClassSymbol package_info; // see bug 6443073 |
aoqi@0 | 833 | |
aoqi@0 | 834 | public PackageSymbol(Name name, Type type, Symbol owner) { |
aoqi@0 | 835 | super(PCK, 0, name, type, owner); |
aoqi@0 | 836 | this.members_field = null; |
aoqi@0 | 837 | this.fullname = formFullName(name, owner); |
aoqi@0 | 838 | } |
aoqi@0 | 839 | |
aoqi@0 | 840 | public PackageSymbol(Name name, Symbol owner) { |
aoqi@0 | 841 | this(name, null, owner); |
aoqi@0 | 842 | this.type = new PackageType(this); |
aoqi@0 | 843 | } |
aoqi@0 | 844 | |
aoqi@0 | 845 | public String toString() { |
aoqi@0 | 846 | return fullname.toString(); |
aoqi@0 | 847 | } |
aoqi@0 | 848 | |
aoqi@0 | 849 | public Name getQualifiedName() { |
aoqi@0 | 850 | return fullname; |
aoqi@0 | 851 | } |
aoqi@0 | 852 | |
aoqi@0 | 853 | public boolean isUnnamed() { |
aoqi@0 | 854 | return name.isEmpty() && owner != null; |
aoqi@0 | 855 | } |
aoqi@0 | 856 | |
aoqi@0 | 857 | public Scope members() { |
aoqi@0 | 858 | if (completer != null) complete(); |
aoqi@0 | 859 | return members_field; |
aoqi@0 | 860 | } |
aoqi@0 | 861 | |
aoqi@0 | 862 | public long flags() { |
aoqi@0 | 863 | if (completer != null) complete(); |
aoqi@0 | 864 | return flags_field; |
aoqi@0 | 865 | } |
aoqi@0 | 866 | |
aoqi@0 | 867 | @Override |
aoqi@0 | 868 | public List<Attribute.Compound> getRawAttributes() { |
aoqi@0 | 869 | if (completer != null) complete(); |
aoqi@0 | 870 | if (package_info != null && package_info.completer != null) { |
aoqi@0 | 871 | package_info.complete(); |
aoqi@0 | 872 | mergeAttributes(); |
aoqi@0 | 873 | } |
aoqi@0 | 874 | return super.getRawAttributes(); |
aoqi@0 | 875 | } |
aoqi@0 | 876 | |
aoqi@0 | 877 | private void mergeAttributes() { |
aoqi@0 | 878 | if (metadata == null && |
aoqi@0 | 879 | package_info.metadata != null) { |
aoqi@0 | 880 | metadata = new SymbolMetadata(this); |
aoqi@0 | 881 | metadata.setAttributes(package_info.metadata); |
aoqi@0 | 882 | } |
aoqi@0 | 883 | } |
aoqi@0 | 884 | |
aoqi@0 | 885 | /** A package "exists" if a type or package that exists has |
aoqi@0 | 886 | * been seen within it. |
aoqi@0 | 887 | */ |
aoqi@0 | 888 | public boolean exists() { |
aoqi@0 | 889 | return (flags_field & EXISTS) != 0; |
aoqi@0 | 890 | } |
aoqi@0 | 891 | |
aoqi@0 | 892 | public ElementKind getKind() { |
aoqi@0 | 893 | return ElementKind.PACKAGE; |
aoqi@0 | 894 | } |
aoqi@0 | 895 | |
aoqi@0 | 896 | public Symbol getEnclosingElement() { |
aoqi@0 | 897 | return null; |
aoqi@0 | 898 | } |
aoqi@0 | 899 | |
aoqi@0 | 900 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
aoqi@0 | 901 | return v.visitPackage(this, p); |
aoqi@0 | 902 | } |
aoqi@0 | 903 | |
aoqi@0 | 904 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
aoqi@0 | 905 | return v.visitPackageSymbol(this, p); |
aoqi@0 | 906 | } |
aoqi@0 | 907 | } |
aoqi@0 | 908 | |
aoqi@0 | 909 | /** A class for class symbols |
aoqi@0 | 910 | */ |
aoqi@0 | 911 | public static class ClassSymbol extends TypeSymbol implements TypeElement { |
aoqi@0 | 912 | |
aoqi@0 | 913 | /** a scope for all class members; variables, methods and inner classes |
aoqi@0 | 914 | * type parameters are not part of this scope |
aoqi@0 | 915 | */ |
aoqi@0 | 916 | public Scope members_field; |
aoqi@0 | 917 | |
aoqi@0 | 918 | /** the fully qualified name of the class, i.e. pck.outer.inner. |
aoqi@0 | 919 | * null for anonymous classes |
aoqi@0 | 920 | */ |
aoqi@0 | 921 | public Name fullname; |
aoqi@0 | 922 | |
aoqi@0 | 923 | /** the fully qualified name of the class after converting to flat |
aoqi@0 | 924 | * representation, i.e. pck.outer$inner, |
aoqi@0 | 925 | * set externally for local and anonymous classes |
aoqi@0 | 926 | */ |
aoqi@0 | 927 | public Name flatname; |
aoqi@0 | 928 | |
aoqi@0 | 929 | /** the sourcefile where the class came from |
aoqi@0 | 930 | */ |
aoqi@0 | 931 | public JavaFileObject sourcefile; |
aoqi@0 | 932 | |
aoqi@0 | 933 | /** the classfile from where to load this class |
aoqi@0 | 934 | * this will have extension .class or .java |
aoqi@0 | 935 | */ |
aoqi@0 | 936 | public JavaFileObject classfile; |
aoqi@0 | 937 | |
aoqi@0 | 938 | /** the list of translated local classes (used for generating |
aoqi@0 | 939 | * InnerClasses attribute) |
aoqi@0 | 940 | */ |
aoqi@0 | 941 | public List<ClassSymbol> trans_local; |
aoqi@0 | 942 | |
aoqi@0 | 943 | /** the constant pool of the class |
aoqi@0 | 944 | */ |
aoqi@0 | 945 | public Pool pool; |
aoqi@0 | 946 | |
aoqi@0 | 947 | public ClassSymbol(long flags, Name name, Type type, Symbol owner) { |
aoqi@0 | 948 | super(TYP, flags, name, type, owner); |
aoqi@0 | 949 | this.members_field = null; |
aoqi@0 | 950 | this.fullname = formFullName(name, owner); |
aoqi@0 | 951 | this.flatname = formFlatName(name, owner); |
aoqi@0 | 952 | this.sourcefile = null; |
aoqi@0 | 953 | this.classfile = null; |
aoqi@0 | 954 | this.pool = null; |
aoqi@0 | 955 | } |
aoqi@0 | 956 | |
aoqi@0 | 957 | public ClassSymbol(long flags, Name name, Symbol owner) { |
aoqi@0 | 958 | this( |
aoqi@0 | 959 | flags, |
aoqi@0 | 960 | name, |
aoqi@0 | 961 | new ClassType(Type.noType, null, null), |
aoqi@0 | 962 | owner); |
aoqi@0 | 963 | this.type.tsym = this; |
aoqi@0 | 964 | } |
aoqi@0 | 965 | |
aoqi@0 | 966 | /** The Java source which this symbol represents. |
aoqi@0 | 967 | */ |
aoqi@0 | 968 | public String toString() { |
aoqi@0 | 969 | return className(); |
aoqi@0 | 970 | } |
aoqi@0 | 971 | |
aoqi@0 | 972 | public long flags() { |
aoqi@0 | 973 | if (completer != null) complete(); |
aoqi@0 | 974 | return flags_field; |
aoqi@0 | 975 | } |
aoqi@0 | 976 | |
aoqi@0 | 977 | public Scope members() { |
aoqi@0 | 978 | if (completer != null) complete(); |
aoqi@0 | 979 | return members_field; |
aoqi@0 | 980 | } |
aoqi@0 | 981 | |
aoqi@0 | 982 | @Override |
aoqi@0 | 983 | public List<Attribute.Compound> getRawAttributes() { |
aoqi@0 | 984 | if (completer != null) complete(); |
aoqi@0 | 985 | return super.getRawAttributes(); |
aoqi@0 | 986 | } |
aoqi@0 | 987 | |
aoqi@0 | 988 | @Override |
aoqi@0 | 989 | public List<Attribute.TypeCompound> getRawTypeAttributes() { |
aoqi@0 | 990 | if (completer != null) complete(); |
aoqi@0 | 991 | return super.getRawTypeAttributes(); |
aoqi@0 | 992 | } |
aoqi@0 | 993 | |
aoqi@0 | 994 | public Type erasure(Types types) { |
aoqi@0 | 995 | if (erasure_field == null) |
aoqi@0 | 996 | erasure_field = new ClassType(types.erasure(type.getEnclosingType()), |
aoqi@0 | 997 | List.<Type>nil(), this); |
aoqi@0 | 998 | return erasure_field; |
aoqi@0 | 999 | } |
aoqi@0 | 1000 | |
aoqi@0 | 1001 | public String className() { |
aoqi@0 | 1002 | if (name.isEmpty()) |
aoqi@0 | 1003 | return |
aoqi@0 | 1004 | Log.getLocalizedString("anonymous.class", flatname); |
aoqi@0 | 1005 | else |
aoqi@0 | 1006 | return fullname.toString(); |
aoqi@0 | 1007 | } |
aoqi@0 | 1008 | |
aoqi@0 | 1009 | public Name getQualifiedName() { |
aoqi@0 | 1010 | return fullname; |
aoqi@0 | 1011 | } |
aoqi@0 | 1012 | |
aoqi@0 | 1013 | public Name flatName() { |
aoqi@0 | 1014 | return flatname; |
aoqi@0 | 1015 | } |
aoqi@0 | 1016 | |
aoqi@0 | 1017 | public boolean isSubClass(Symbol base, Types types) { |
aoqi@0 | 1018 | if (this == base) { |
aoqi@0 | 1019 | return true; |
aoqi@0 | 1020 | } else if ((base.flags() & INTERFACE) != 0) { |
aoqi@0 | 1021 | for (Type t = type; t.hasTag(CLASS); t = types.supertype(t)) |
aoqi@0 | 1022 | for (List<Type> is = types.interfaces(t); |
aoqi@0 | 1023 | is.nonEmpty(); |
aoqi@0 | 1024 | is = is.tail) |
aoqi@0 | 1025 | if (is.head.tsym.isSubClass(base, types)) return true; |
aoqi@0 | 1026 | } else { |
aoqi@0 | 1027 | for (Type t = type; t.hasTag(CLASS); t = types.supertype(t)) |
aoqi@0 | 1028 | if (t.tsym == base) return true; |
aoqi@0 | 1029 | } |
aoqi@0 | 1030 | return false; |
aoqi@0 | 1031 | } |
aoqi@0 | 1032 | |
aoqi@0 | 1033 | /** Complete the elaboration of this symbol's definition. |
aoqi@0 | 1034 | */ |
aoqi@0 | 1035 | public void complete() throws CompletionFailure { |
aoqi@0 | 1036 | try { |
aoqi@0 | 1037 | super.complete(); |
aoqi@0 | 1038 | } catch (CompletionFailure ex) { |
aoqi@0 | 1039 | // quiet error recovery |
aoqi@0 | 1040 | flags_field |= (PUBLIC|STATIC); |
aoqi@0 | 1041 | this.type = new ErrorType(this, Type.noType); |
aoqi@0 | 1042 | throw ex; |
aoqi@0 | 1043 | } |
aoqi@0 | 1044 | } |
aoqi@0 | 1045 | |
aoqi@0 | 1046 | public List<Type> getInterfaces() { |
aoqi@0 | 1047 | complete(); |
aoqi@0 | 1048 | if (type instanceof ClassType) { |
aoqi@0 | 1049 | ClassType t = (ClassType)type; |
aoqi@0 | 1050 | if (t.interfaces_field == null) // FIXME: shouldn't be null |
aoqi@0 | 1051 | t.interfaces_field = List.nil(); |
aoqi@0 | 1052 | if (t.all_interfaces_field != null) |
aoqi@0 | 1053 | return Type.getModelTypes(t.all_interfaces_field); |
aoqi@0 | 1054 | return t.interfaces_field; |
aoqi@0 | 1055 | } else { |
aoqi@0 | 1056 | return List.nil(); |
aoqi@0 | 1057 | } |
aoqi@0 | 1058 | } |
aoqi@0 | 1059 | |
aoqi@0 | 1060 | public Type getSuperclass() { |
aoqi@0 | 1061 | complete(); |
aoqi@0 | 1062 | if (type instanceof ClassType) { |
aoqi@0 | 1063 | ClassType t = (ClassType)type; |
aoqi@0 | 1064 | if (t.supertype_field == null) // FIXME: shouldn't be null |
aoqi@0 | 1065 | t.supertype_field = Type.noType; |
aoqi@0 | 1066 | // An interface has no superclass; its supertype is Object. |
aoqi@0 | 1067 | return t.isInterface() |
aoqi@0 | 1068 | ? Type.noType |
aoqi@0 | 1069 | : t.supertype_field.getModelType(); |
aoqi@0 | 1070 | } else { |
aoqi@0 | 1071 | return Type.noType; |
aoqi@0 | 1072 | } |
aoqi@0 | 1073 | } |
aoqi@0 | 1074 | |
aoqi@0 | 1075 | /** |
aoqi@0 | 1076 | * Returns the next class to search for inherited annotations or {@code null} |
aoqi@0 | 1077 | * if the next class can't be found. |
aoqi@0 | 1078 | */ |
aoqi@0 | 1079 | private ClassSymbol getSuperClassToSearchForAnnotations() { |
aoqi@0 | 1080 | |
aoqi@0 | 1081 | Type sup = getSuperclass(); |
aoqi@0 | 1082 | |
aoqi@0 | 1083 | if (!sup.hasTag(CLASS) || sup.isErroneous()) |
aoqi@0 | 1084 | return null; |
aoqi@0 | 1085 | |
aoqi@0 | 1086 | return (ClassSymbol) sup.tsym; |
aoqi@0 | 1087 | } |
aoqi@0 | 1088 | |
aoqi@0 | 1089 | |
aoqi@0 | 1090 | @Override |
aoqi@0 | 1091 | protected <A extends Annotation> A[] getInheritedAnnotations(Class<A> annoType) { |
aoqi@0 | 1092 | |
aoqi@0 | 1093 | ClassSymbol sup = getSuperClassToSearchForAnnotations(); |
aoqi@0 | 1094 | |
aoqi@0 | 1095 | return sup == null ? super.getInheritedAnnotations(annoType) |
aoqi@0 | 1096 | : sup.getAnnotationsByType(annoType); |
aoqi@0 | 1097 | } |
aoqi@0 | 1098 | |
aoqi@0 | 1099 | |
aoqi@0 | 1100 | public ElementKind getKind() { |
aoqi@0 | 1101 | long flags = flags(); |
aoqi@0 | 1102 | if ((flags & ANNOTATION) != 0) |
aoqi@0 | 1103 | return ElementKind.ANNOTATION_TYPE; |
aoqi@0 | 1104 | else if ((flags & INTERFACE) != 0) |
aoqi@0 | 1105 | return ElementKind.INTERFACE; |
aoqi@0 | 1106 | else if ((flags & ENUM) != 0) |
aoqi@0 | 1107 | return ElementKind.ENUM; |
aoqi@0 | 1108 | else |
aoqi@0 | 1109 | return ElementKind.CLASS; |
aoqi@0 | 1110 | } |
aoqi@0 | 1111 | |
aoqi@0 | 1112 | @Override |
aoqi@0 | 1113 | public Set<Modifier> getModifiers() { |
aoqi@0 | 1114 | long flags = flags(); |
aoqi@0 | 1115 | return Flags.asModifierSet(flags & ~DEFAULT); |
aoqi@0 | 1116 | } |
aoqi@0 | 1117 | |
aoqi@0 | 1118 | public NestingKind getNestingKind() { |
aoqi@0 | 1119 | complete(); |
aoqi@0 | 1120 | if (owner.kind == PCK) |
aoqi@0 | 1121 | return NestingKind.TOP_LEVEL; |
aoqi@0 | 1122 | else if (name.isEmpty()) |
aoqi@0 | 1123 | return NestingKind.ANONYMOUS; |
aoqi@0 | 1124 | else if (owner.kind == MTH) |
aoqi@0 | 1125 | return NestingKind.LOCAL; |
aoqi@0 | 1126 | else |
aoqi@0 | 1127 | return NestingKind.MEMBER; |
aoqi@0 | 1128 | } |
aoqi@0 | 1129 | |
aoqi@0 | 1130 | |
aoqi@0 | 1131 | @Override |
aoqi@0 | 1132 | protected <A extends Annotation> Attribute.Compound getAttribute(final Class<A> annoType) { |
aoqi@0 | 1133 | |
aoqi@0 | 1134 | Attribute.Compound attrib = super.getAttribute(annoType); |
aoqi@0 | 1135 | |
aoqi@0 | 1136 | boolean inherited = annoType.isAnnotationPresent(Inherited.class); |
aoqi@0 | 1137 | if (attrib != null || !inherited) |
aoqi@0 | 1138 | return attrib; |
aoqi@0 | 1139 | |
aoqi@0 | 1140 | // Search supertypes |
aoqi@0 | 1141 | ClassSymbol superType = getSuperClassToSearchForAnnotations(); |
aoqi@0 | 1142 | return superType == null ? null |
aoqi@0 | 1143 | : superType.getAttribute(annoType); |
aoqi@0 | 1144 | } |
aoqi@0 | 1145 | |
aoqi@0 | 1146 | |
aoqi@0 | 1147 | |
aoqi@0 | 1148 | |
aoqi@0 | 1149 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
aoqi@0 | 1150 | return v.visitType(this, p); |
aoqi@0 | 1151 | } |
aoqi@0 | 1152 | |
aoqi@0 | 1153 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
aoqi@0 | 1154 | return v.visitClassSymbol(this, p); |
aoqi@0 | 1155 | } |
jlahoda@2717 | 1156 | |
jlahoda@2717 | 1157 | public void markAbstractIfNeeded(Types types) { |
jlahoda@2717 | 1158 | if (types.enter.getEnv(this) != null && |
jlahoda@2717 | 1159 | (flags() & ENUM) != 0 && types.supertype(type).tsym == types.syms.enumSym && |
jlahoda@2717 | 1160 | (flags() & (FINAL | ABSTRACT)) == 0) { |
jlahoda@2717 | 1161 | if (types.firstUnimplementedAbstract(this) != null) |
jlahoda@2717 | 1162 | // add the ABSTRACT flag to an enum |
jlahoda@2717 | 1163 | flags_field |= ABSTRACT; |
jlahoda@2717 | 1164 | } |
jlahoda@2717 | 1165 | } |
aoqi@0 | 1166 | } |
aoqi@0 | 1167 | |
aoqi@0 | 1168 | |
aoqi@0 | 1169 | /** A class for variable symbols |
aoqi@0 | 1170 | */ |
aoqi@0 | 1171 | public static class VarSymbol extends Symbol implements VariableElement { |
aoqi@0 | 1172 | |
aoqi@0 | 1173 | /** The variable's declaration position. |
aoqi@0 | 1174 | */ |
aoqi@0 | 1175 | public int pos = Position.NOPOS; |
aoqi@0 | 1176 | |
aoqi@0 | 1177 | /** The variable's address. Used for different purposes during |
aoqi@0 | 1178 | * flow analysis, translation and code generation. |
aoqi@0 | 1179 | * Flow analysis: |
aoqi@0 | 1180 | * If this is a blank final or local variable, its sequence number. |
aoqi@0 | 1181 | * Translation: |
aoqi@0 | 1182 | * If this is a private field, its access number. |
aoqi@0 | 1183 | * Code generation: |
aoqi@0 | 1184 | * If this is a local variable, its logical slot number. |
aoqi@0 | 1185 | */ |
aoqi@0 | 1186 | public int adr = -1; |
aoqi@0 | 1187 | |
aoqi@0 | 1188 | /** Construct a variable symbol, given its flags, name, type and owner. |
aoqi@0 | 1189 | */ |
aoqi@0 | 1190 | public VarSymbol(long flags, Name name, Type type, Symbol owner) { |
aoqi@0 | 1191 | super(VAR, flags, name, type, owner); |
aoqi@0 | 1192 | } |
aoqi@0 | 1193 | |
aoqi@0 | 1194 | /** Clone this symbol with new owner. |
aoqi@0 | 1195 | */ |
aoqi@0 | 1196 | public VarSymbol clone(Symbol newOwner) { |
aoqi@0 | 1197 | VarSymbol v = new VarSymbol(flags_field, name, type, newOwner) { |
aoqi@0 | 1198 | @Override |
aoqi@0 | 1199 | public Symbol baseSymbol() { |
aoqi@0 | 1200 | return VarSymbol.this; |
aoqi@0 | 1201 | } |
aoqi@0 | 1202 | }; |
aoqi@0 | 1203 | v.pos = pos; |
aoqi@0 | 1204 | v.adr = adr; |
aoqi@0 | 1205 | v.data = data; |
aoqi@0 | 1206 | // System.out.println("clone " + v + " in " + newOwner);//DEBUG |
aoqi@0 | 1207 | return v; |
aoqi@0 | 1208 | } |
aoqi@0 | 1209 | |
aoqi@0 | 1210 | public String toString() { |
aoqi@0 | 1211 | return name.toString(); |
aoqi@0 | 1212 | } |
aoqi@0 | 1213 | |
aoqi@0 | 1214 | public Symbol asMemberOf(Type site, Types types) { |
aoqi@0 | 1215 | return new VarSymbol(flags_field, name, types.memberType(site, this), owner); |
aoqi@0 | 1216 | } |
aoqi@0 | 1217 | |
aoqi@0 | 1218 | public ElementKind getKind() { |
aoqi@0 | 1219 | long flags = flags(); |
aoqi@0 | 1220 | if ((flags & PARAMETER) != 0) { |
aoqi@0 | 1221 | if (isExceptionParameter()) |
aoqi@0 | 1222 | return ElementKind.EXCEPTION_PARAMETER; |
aoqi@0 | 1223 | else |
aoqi@0 | 1224 | return ElementKind.PARAMETER; |
aoqi@0 | 1225 | } else if ((flags & ENUM) != 0) { |
aoqi@0 | 1226 | return ElementKind.ENUM_CONSTANT; |
aoqi@0 | 1227 | } else if (owner.kind == TYP || owner.kind == ERR) { |
aoqi@0 | 1228 | return ElementKind.FIELD; |
aoqi@0 | 1229 | } else if (isResourceVariable()) { |
aoqi@0 | 1230 | return ElementKind.RESOURCE_VARIABLE; |
aoqi@0 | 1231 | } else { |
aoqi@0 | 1232 | return ElementKind.LOCAL_VARIABLE; |
aoqi@0 | 1233 | } |
aoqi@0 | 1234 | } |
aoqi@0 | 1235 | |
aoqi@0 | 1236 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
aoqi@0 | 1237 | return v.visitVariable(this, p); |
aoqi@0 | 1238 | } |
aoqi@0 | 1239 | |
aoqi@0 | 1240 | public Object getConstantValue() { // Mirror API |
aoqi@0 | 1241 | return Constants.decode(getConstValue(), type); |
aoqi@0 | 1242 | } |
aoqi@0 | 1243 | |
aoqi@0 | 1244 | public void setLazyConstValue(final Env<AttrContext> env, |
aoqi@0 | 1245 | final Attr attr, |
aoqi@0 | 1246 | final JCVariableDecl variable) |
aoqi@0 | 1247 | { |
aoqi@0 | 1248 | setData(new Callable<Object>() { |
aoqi@0 | 1249 | public Object call() { |
aoqi@0 | 1250 | return attr.attribLazyConstantValue(env, variable, type); |
aoqi@0 | 1251 | } |
aoqi@0 | 1252 | }); |
aoqi@0 | 1253 | } |
aoqi@0 | 1254 | |
aoqi@0 | 1255 | /** |
aoqi@0 | 1256 | * The variable's constant value, if this is a constant. |
aoqi@0 | 1257 | * Before the constant value is evaluated, it points to an |
aoqi@0 | 1258 | * initializer environment. If this is not a constant, it can |
aoqi@0 | 1259 | * be used for other stuff. |
aoqi@0 | 1260 | */ |
aoqi@0 | 1261 | private Object data; |
aoqi@0 | 1262 | |
aoqi@0 | 1263 | public boolean isExceptionParameter() { |
aoqi@0 | 1264 | return data == ElementKind.EXCEPTION_PARAMETER; |
aoqi@0 | 1265 | } |
aoqi@0 | 1266 | |
aoqi@0 | 1267 | public boolean isResourceVariable() { |
aoqi@0 | 1268 | return data == ElementKind.RESOURCE_VARIABLE; |
aoqi@0 | 1269 | } |
aoqi@0 | 1270 | |
aoqi@0 | 1271 | public Object getConstValue() { |
aoqi@0 | 1272 | // TODO: Consider if getConstValue and getConstantValue can be collapsed |
aoqi@0 | 1273 | if (data == ElementKind.EXCEPTION_PARAMETER || |
aoqi@0 | 1274 | data == ElementKind.RESOURCE_VARIABLE) { |
aoqi@0 | 1275 | return null; |
aoqi@0 | 1276 | } else if (data instanceof Callable<?>) { |
aoqi@0 | 1277 | // In this case, this is a final variable, with an as |
aoqi@0 | 1278 | // yet unevaluated initializer. |
aoqi@0 | 1279 | Callable<?> eval = (Callable<?>)data; |
aoqi@0 | 1280 | data = null; // to make sure we don't evaluate this twice. |
aoqi@0 | 1281 | try { |
aoqi@0 | 1282 | data = eval.call(); |
aoqi@0 | 1283 | } catch (Exception ex) { |
aoqi@0 | 1284 | throw new AssertionError(ex); |
aoqi@0 | 1285 | } |
aoqi@0 | 1286 | } |
aoqi@0 | 1287 | return data; |
aoqi@0 | 1288 | } |
aoqi@0 | 1289 | |
aoqi@0 | 1290 | public void setData(Object data) { |
aoqi@0 | 1291 | Assert.check(!(data instanceof Env<?>), this); |
aoqi@0 | 1292 | this.data = data; |
aoqi@0 | 1293 | } |
aoqi@0 | 1294 | |
aoqi@0 | 1295 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
aoqi@0 | 1296 | return v.visitVarSymbol(this, p); |
aoqi@0 | 1297 | } |
aoqi@0 | 1298 | } |
aoqi@0 | 1299 | |
aoqi@0 | 1300 | /** A class for method symbols. |
aoqi@0 | 1301 | */ |
aoqi@0 | 1302 | public static class MethodSymbol extends Symbol implements ExecutableElement { |
aoqi@0 | 1303 | |
aoqi@0 | 1304 | /** The code of the method. */ |
aoqi@0 | 1305 | public Code code = null; |
aoqi@0 | 1306 | |
aoqi@0 | 1307 | /** The extra (synthetic/mandated) parameters of the method. */ |
aoqi@0 | 1308 | public List<VarSymbol> extraParams = List.nil(); |
aoqi@0 | 1309 | |
aoqi@0 | 1310 | /** The captured local variables in an anonymous class */ |
aoqi@0 | 1311 | public List<VarSymbol> capturedLocals = List.nil(); |
aoqi@0 | 1312 | |
aoqi@0 | 1313 | /** The parameters of the method. */ |
aoqi@0 | 1314 | public List<VarSymbol> params = null; |
aoqi@0 | 1315 | |
aoqi@0 | 1316 | /** The names of the parameters */ |
aoqi@0 | 1317 | public List<Name> savedParameterNames; |
aoqi@0 | 1318 | |
aoqi@0 | 1319 | /** For an attribute field accessor, its default value if any. |
aoqi@0 | 1320 | * The value is null if none appeared in the method |
aoqi@0 | 1321 | * declaration. |
aoqi@0 | 1322 | */ |
aoqi@0 | 1323 | public Attribute defaultValue = null; |
aoqi@0 | 1324 | |
aoqi@0 | 1325 | /** Construct a method symbol, given its flags, name, type and owner. |
aoqi@0 | 1326 | */ |
aoqi@0 | 1327 | public MethodSymbol(long flags, Name name, Type type, Symbol owner) { |
aoqi@0 | 1328 | super(MTH, flags, name, type, owner); |
aoqi@0 | 1329 | if (owner.type.hasTag(TYPEVAR)) Assert.error(owner + "." + name); |
aoqi@0 | 1330 | } |
aoqi@0 | 1331 | |
aoqi@0 | 1332 | /** Clone this symbol with new owner. |
aoqi@0 | 1333 | */ |
aoqi@0 | 1334 | public MethodSymbol clone(Symbol newOwner) { |
aoqi@0 | 1335 | MethodSymbol m = new MethodSymbol(flags_field, name, type, newOwner) { |
aoqi@0 | 1336 | @Override |
aoqi@0 | 1337 | public Symbol baseSymbol() { |
aoqi@0 | 1338 | return MethodSymbol.this; |
aoqi@0 | 1339 | } |
aoqi@0 | 1340 | }; |
aoqi@0 | 1341 | m.code = code; |
aoqi@0 | 1342 | return m; |
aoqi@0 | 1343 | } |
aoqi@0 | 1344 | |
aoqi@0 | 1345 | @Override |
aoqi@0 | 1346 | public Set<Modifier> getModifiers() { |
aoqi@0 | 1347 | long flags = flags(); |
aoqi@0 | 1348 | return Flags.asModifierSet((flags & DEFAULT) != 0 ? flags & ~ABSTRACT : flags); |
aoqi@0 | 1349 | } |
aoqi@0 | 1350 | |
aoqi@0 | 1351 | /** The Java source which this symbol represents. |
aoqi@0 | 1352 | */ |
aoqi@0 | 1353 | public String toString() { |
aoqi@0 | 1354 | if ((flags() & BLOCK) != 0) { |
aoqi@0 | 1355 | return owner.name.toString(); |
aoqi@0 | 1356 | } else { |
aoqi@0 | 1357 | String s = (name == name.table.names.init) |
aoqi@0 | 1358 | ? owner.name.toString() |
aoqi@0 | 1359 | : name.toString(); |
aoqi@0 | 1360 | if (type != null) { |
aoqi@0 | 1361 | if (type.hasTag(FORALL)) |
aoqi@0 | 1362 | s = "<" + ((ForAll)type).getTypeArguments() + ">" + s; |
aoqi@0 | 1363 | s += "(" + type.argtypes((flags() & VARARGS) != 0) + ")"; |
aoqi@0 | 1364 | } |
aoqi@0 | 1365 | return s; |
aoqi@0 | 1366 | } |
aoqi@0 | 1367 | } |
aoqi@0 | 1368 | |
aoqi@0 | 1369 | public boolean isDynamic() { |
aoqi@0 | 1370 | return false; |
aoqi@0 | 1371 | } |
aoqi@0 | 1372 | |
aoqi@0 | 1373 | /** find a symbol that this (proxy method) symbol implements. |
aoqi@0 | 1374 | * @param c The class whose members are searched for |
aoqi@0 | 1375 | * implementations |
aoqi@0 | 1376 | */ |
aoqi@0 | 1377 | public Symbol implemented(TypeSymbol c, Types types) { |
aoqi@0 | 1378 | Symbol impl = null; |
aoqi@0 | 1379 | for (List<Type> is = types.interfaces(c.type); |
aoqi@0 | 1380 | impl == null && is.nonEmpty(); |
aoqi@0 | 1381 | is = is.tail) { |
aoqi@0 | 1382 | TypeSymbol i = is.head.tsym; |
aoqi@0 | 1383 | impl = implementedIn(i, types); |
aoqi@0 | 1384 | if (impl == null) |
aoqi@0 | 1385 | impl = implemented(i, types); |
aoqi@0 | 1386 | } |
aoqi@0 | 1387 | return impl; |
aoqi@0 | 1388 | } |
aoqi@0 | 1389 | |
aoqi@0 | 1390 | public Symbol implementedIn(TypeSymbol c, Types types) { |
aoqi@0 | 1391 | Symbol impl = null; |
aoqi@0 | 1392 | for (Scope.Entry e = c.members().lookup(name); |
aoqi@0 | 1393 | impl == null && e.scope != null; |
aoqi@0 | 1394 | e = e.next()) { |
aoqi@0 | 1395 | if (this.overrides(e.sym, (TypeSymbol)owner, types, true) && |
aoqi@0 | 1396 | // FIXME: I suspect the following requires a |
aoqi@0 | 1397 | // subst() for a parametric return type. |
aoqi@0 | 1398 | types.isSameType(type.getReturnType(), |
aoqi@0 | 1399 | types.memberType(owner.type, e.sym).getReturnType())) { |
aoqi@0 | 1400 | impl = e.sym; |
aoqi@0 | 1401 | } |
aoqi@0 | 1402 | } |
aoqi@0 | 1403 | return impl; |
aoqi@0 | 1404 | } |
aoqi@0 | 1405 | |
aoqi@0 | 1406 | /** Will the erasure of this method be considered by the VM to |
aoqi@0 | 1407 | * override the erasure of the other when seen from class `origin'? |
aoqi@0 | 1408 | */ |
aoqi@0 | 1409 | public boolean binaryOverrides(Symbol _other, TypeSymbol origin, Types types) { |
aoqi@0 | 1410 | if (isConstructor() || _other.kind != MTH) return false; |
aoqi@0 | 1411 | |
aoqi@0 | 1412 | if (this == _other) return true; |
aoqi@0 | 1413 | MethodSymbol other = (MethodSymbol)_other; |
aoqi@0 | 1414 | |
aoqi@0 | 1415 | // check for a direct implementation |
aoqi@0 | 1416 | if (other.isOverridableIn((TypeSymbol)owner) && |
aoqi@0 | 1417 | types.asSuper(owner.type, other.owner) != null && |
aoqi@0 | 1418 | types.isSameType(erasure(types), other.erasure(types))) |
aoqi@0 | 1419 | return true; |
aoqi@0 | 1420 | |
aoqi@0 | 1421 | // check for an inherited implementation |
aoqi@0 | 1422 | return |
aoqi@0 | 1423 | (flags() & ABSTRACT) == 0 && |
aoqi@0 | 1424 | other.isOverridableIn(origin) && |
aoqi@0 | 1425 | this.isMemberOf(origin, types) && |
aoqi@0 | 1426 | types.isSameType(erasure(types), other.erasure(types)); |
aoqi@0 | 1427 | } |
aoqi@0 | 1428 | |
aoqi@0 | 1429 | /** The implementation of this (abstract) symbol in class origin, |
aoqi@0 | 1430 | * from the VM's point of view, null if method does not have an |
aoqi@0 | 1431 | * implementation in class. |
aoqi@0 | 1432 | * @param origin The class of which the implementation is a member. |
aoqi@0 | 1433 | */ |
aoqi@0 | 1434 | public MethodSymbol binaryImplementation(ClassSymbol origin, Types types) { |
aoqi@0 | 1435 | for (TypeSymbol c = origin; c != null; c = types.supertype(c.type).tsym) { |
aoqi@0 | 1436 | for (Scope.Entry e = c.members().lookup(name); |
aoqi@0 | 1437 | e.scope != null; |
aoqi@0 | 1438 | e = e.next()) { |
aoqi@0 | 1439 | if (e.sym.kind == MTH && |
aoqi@0 | 1440 | ((MethodSymbol)e.sym).binaryOverrides(this, origin, types)) |
aoqi@0 | 1441 | return (MethodSymbol)e.sym; |
aoqi@0 | 1442 | } |
aoqi@0 | 1443 | } |
aoqi@0 | 1444 | return null; |
aoqi@0 | 1445 | } |
aoqi@0 | 1446 | |
aoqi@0 | 1447 | /** Does this symbol override `other' symbol, when both are seen as |
aoqi@0 | 1448 | * members of class `origin'? It is assumed that _other is a member |
aoqi@0 | 1449 | * of origin. |
aoqi@0 | 1450 | * |
aoqi@0 | 1451 | * It is assumed that both symbols have the same name. The static |
aoqi@0 | 1452 | * modifier is ignored for this test. |
aoqi@0 | 1453 | * |
aoqi@0 | 1454 | * See JLS 8.4.6.1 (without transitivity) and 8.4.6.4 |
aoqi@0 | 1455 | */ |
aoqi@0 | 1456 | public boolean overrides(Symbol _other, TypeSymbol origin, Types types, boolean checkResult) { |
aoqi@0 | 1457 | if (isConstructor() || _other.kind != MTH) return false; |
aoqi@0 | 1458 | |
aoqi@0 | 1459 | if (this == _other) return true; |
aoqi@0 | 1460 | MethodSymbol other = (MethodSymbol)_other; |
aoqi@0 | 1461 | |
aoqi@0 | 1462 | // check for a direct implementation |
aoqi@0 | 1463 | if (other.isOverridableIn((TypeSymbol)owner) && |
aoqi@0 | 1464 | types.asSuper(owner.type, other.owner) != null) { |
aoqi@0 | 1465 | Type mt = types.memberType(owner.type, this); |
aoqi@0 | 1466 | Type ot = types.memberType(owner.type, other); |
aoqi@0 | 1467 | if (types.isSubSignature(mt, ot)) { |
aoqi@0 | 1468 | if (!checkResult) |
aoqi@0 | 1469 | return true; |
aoqi@0 | 1470 | if (types.returnTypeSubstitutable(mt, ot)) |
aoqi@0 | 1471 | return true; |
aoqi@0 | 1472 | } |
aoqi@0 | 1473 | } |
aoqi@0 | 1474 | |
aoqi@0 | 1475 | // check for an inherited implementation |
aoqi@0 | 1476 | if ((flags() & ABSTRACT) != 0 || |
aoqi@0 | 1477 | ((other.flags() & ABSTRACT) == 0 && (other.flags() & DEFAULT) == 0) || |
aoqi@0 | 1478 | !other.isOverridableIn(origin) || |
aoqi@0 | 1479 | !this.isMemberOf(origin, types)) |
aoqi@0 | 1480 | return false; |
aoqi@0 | 1481 | |
aoqi@0 | 1482 | // assert types.asSuper(origin.type, other.owner) != null; |
aoqi@0 | 1483 | Type mt = types.memberType(origin.type, this); |
aoqi@0 | 1484 | Type ot = types.memberType(origin.type, other); |
aoqi@0 | 1485 | return |
aoqi@0 | 1486 | types.isSubSignature(mt, ot) && |
aoqi@0 | 1487 | (!checkResult || types.resultSubtype(mt, ot, types.noWarnings)); |
aoqi@0 | 1488 | } |
aoqi@0 | 1489 | |
aoqi@0 | 1490 | private boolean isOverridableIn(TypeSymbol origin) { |
aoqi@0 | 1491 | // JLS 8.4.6.1 |
aoqi@0 | 1492 | switch ((int)(flags_field & Flags.AccessFlags)) { |
aoqi@0 | 1493 | case Flags.PRIVATE: |
aoqi@0 | 1494 | return false; |
aoqi@0 | 1495 | case Flags.PUBLIC: |
aoqi@0 | 1496 | return !this.owner.isInterface() || |
aoqi@0 | 1497 | (flags_field & STATIC) == 0; |
aoqi@0 | 1498 | case Flags.PROTECTED: |
aoqi@0 | 1499 | return (origin.flags() & INTERFACE) == 0; |
aoqi@0 | 1500 | case 0: |
aoqi@0 | 1501 | // for package private: can only override in the same |
aoqi@0 | 1502 | // package |
aoqi@0 | 1503 | return |
aoqi@0 | 1504 | this.packge() == origin.packge() && |
aoqi@0 | 1505 | (origin.flags() & INTERFACE) == 0; |
aoqi@0 | 1506 | default: |
aoqi@0 | 1507 | return false; |
aoqi@0 | 1508 | } |
aoqi@0 | 1509 | } |
aoqi@0 | 1510 | |
aoqi@0 | 1511 | @Override |
aoqi@0 | 1512 | public boolean isInheritedIn(Symbol clazz, Types types) { |
aoqi@0 | 1513 | switch ((int)(flags_field & Flags.AccessFlags)) { |
aoqi@0 | 1514 | case PUBLIC: |
aoqi@0 | 1515 | return !this.owner.isInterface() || |
aoqi@0 | 1516 | clazz == owner || |
aoqi@0 | 1517 | (flags_field & STATIC) == 0; |
aoqi@0 | 1518 | default: |
aoqi@0 | 1519 | return super.isInheritedIn(clazz, types); |
aoqi@0 | 1520 | } |
aoqi@0 | 1521 | } |
aoqi@0 | 1522 | |
aoqi@0 | 1523 | /** The implementation of this (abstract) symbol in class origin; |
aoqi@0 | 1524 | * null if none exists. Synthetic methods are not considered |
aoqi@0 | 1525 | * as possible implementations. |
aoqi@0 | 1526 | */ |
aoqi@0 | 1527 | public MethodSymbol implementation(TypeSymbol origin, Types types, boolean checkResult) { |
aoqi@0 | 1528 | return implementation(origin, types, checkResult, implementation_filter); |
aoqi@0 | 1529 | } |
aoqi@0 | 1530 | // where |
aoqi@0 | 1531 | public static final Filter<Symbol> implementation_filter = new Filter<Symbol>() { |
aoqi@0 | 1532 | public boolean accepts(Symbol s) { |
aoqi@0 | 1533 | return s.kind == Kinds.MTH && |
aoqi@0 | 1534 | (s.flags() & SYNTHETIC) == 0; |
aoqi@0 | 1535 | } |
aoqi@0 | 1536 | }; |
aoqi@0 | 1537 | |
aoqi@0 | 1538 | public MethodSymbol implementation(TypeSymbol origin, Types types, boolean checkResult, Filter<Symbol> implFilter) { |
aoqi@0 | 1539 | MethodSymbol res = types.implementation(this, origin, checkResult, implFilter); |
aoqi@0 | 1540 | if (res != null) |
aoqi@0 | 1541 | return res; |
aoqi@0 | 1542 | // if origin is derived from a raw type, we might have missed |
aoqi@0 | 1543 | // an implementation because we do not know enough about instantiations. |
aoqi@0 | 1544 | // in this case continue with the supertype as origin. |
aoqi@0 | 1545 | if (types.isDerivedRaw(origin.type) && !origin.isInterface()) |
aoqi@0 | 1546 | return implementation(types.supertype(origin.type).tsym, types, checkResult); |
aoqi@0 | 1547 | else |
aoqi@0 | 1548 | return null; |
aoqi@0 | 1549 | } |
aoqi@0 | 1550 | |
aoqi@0 | 1551 | public List<VarSymbol> params() { |
aoqi@0 | 1552 | owner.complete(); |
aoqi@0 | 1553 | if (params == null) { |
aoqi@0 | 1554 | // If ClassReader.saveParameterNames has been set true, then |
aoqi@0 | 1555 | // savedParameterNames will be set to a list of names that |
aoqi@0 | 1556 | // matches the types in type.getParameterTypes(). If any names |
aoqi@0 | 1557 | // were not found in the class file, those names in the list will |
aoqi@0 | 1558 | // be set to the empty name. |
aoqi@0 | 1559 | // If ClassReader.saveParameterNames has been set false, then |
aoqi@0 | 1560 | // savedParameterNames will be null. |
aoqi@0 | 1561 | List<Name> paramNames = savedParameterNames; |
aoqi@0 | 1562 | savedParameterNames = null; |
aoqi@0 | 1563 | // discard the provided names if the list of names is the wrong size. |
aoqi@0 | 1564 | if (paramNames == null || paramNames.size() != type.getParameterTypes().size()) { |
aoqi@0 | 1565 | paramNames = List.nil(); |
aoqi@0 | 1566 | } |
aoqi@0 | 1567 | ListBuffer<VarSymbol> buf = new ListBuffer<VarSymbol>(); |
aoqi@0 | 1568 | List<Name> remaining = paramNames; |
aoqi@0 | 1569 | // assert: remaining and paramNames are both empty or both |
aoqi@0 | 1570 | // have same cardinality as type.getParameterTypes() |
aoqi@0 | 1571 | int i = 0; |
aoqi@0 | 1572 | for (Type t : type.getParameterTypes()) { |
aoqi@0 | 1573 | Name paramName; |
aoqi@0 | 1574 | if (remaining.isEmpty()) { |
aoqi@0 | 1575 | // no names for any parameters available |
aoqi@0 | 1576 | paramName = createArgName(i, paramNames); |
aoqi@0 | 1577 | } else { |
aoqi@0 | 1578 | paramName = remaining.head; |
aoqi@0 | 1579 | remaining = remaining.tail; |
aoqi@0 | 1580 | if (paramName.isEmpty()) { |
aoqi@0 | 1581 | // no name for this specific parameter |
aoqi@0 | 1582 | paramName = createArgName(i, paramNames); |
aoqi@0 | 1583 | } |
aoqi@0 | 1584 | } |
aoqi@0 | 1585 | buf.append(new VarSymbol(PARAMETER, paramName, t, this)); |
aoqi@0 | 1586 | i++; |
aoqi@0 | 1587 | } |
aoqi@0 | 1588 | params = buf.toList(); |
aoqi@0 | 1589 | } |
aoqi@0 | 1590 | return params; |
aoqi@0 | 1591 | } |
aoqi@0 | 1592 | |
aoqi@0 | 1593 | // Create a name for the argument at position 'index' that is not in |
aoqi@0 | 1594 | // the exclude list. In normal use, either no names will have been |
aoqi@0 | 1595 | // provided, in which case the exclude list is empty, or all the names |
aoqi@0 | 1596 | // will have been provided, in which case this method will not be called. |
aoqi@0 | 1597 | private Name createArgName(int index, List<Name> exclude) { |
aoqi@0 | 1598 | String prefix = "arg"; |
aoqi@0 | 1599 | while (true) { |
aoqi@0 | 1600 | Name argName = name.table.fromString(prefix + index); |
aoqi@0 | 1601 | if (!exclude.contains(argName)) |
aoqi@0 | 1602 | return argName; |
aoqi@0 | 1603 | prefix += "$"; |
aoqi@0 | 1604 | } |
aoqi@0 | 1605 | } |
aoqi@0 | 1606 | |
aoqi@0 | 1607 | public Symbol asMemberOf(Type site, Types types) { |
aoqi@0 | 1608 | return new MethodSymbol(flags_field, name, types.memberType(site, this), owner); |
aoqi@0 | 1609 | } |
aoqi@0 | 1610 | |
aoqi@0 | 1611 | public ElementKind getKind() { |
aoqi@0 | 1612 | if (name == name.table.names.init) |
aoqi@0 | 1613 | return ElementKind.CONSTRUCTOR; |
aoqi@0 | 1614 | else if (name == name.table.names.clinit) |
aoqi@0 | 1615 | return ElementKind.STATIC_INIT; |
aoqi@0 | 1616 | else if ((flags() & BLOCK) != 0) |
aoqi@0 | 1617 | return isStatic() ? ElementKind.STATIC_INIT : ElementKind.INSTANCE_INIT; |
aoqi@0 | 1618 | else |
aoqi@0 | 1619 | return ElementKind.METHOD; |
aoqi@0 | 1620 | } |
aoqi@0 | 1621 | |
aoqi@0 | 1622 | public boolean isStaticOrInstanceInit() { |
aoqi@0 | 1623 | return getKind() == ElementKind.STATIC_INIT || |
aoqi@0 | 1624 | getKind() == ElementKind.INSTANCE_INIT; |
aoqi@0 | 1625 | } |
aoqi@0 | 1626 | |
aoqi@0 | 1627 | public Attribute getDefaultValue() { |
aoqi@0 | 1628 | return defaultValue; |
aoqi@0 | 1629 | } |
aoqi@0 | 1630 | |
aoqi@0 | 1631 | public List<VarSymbol> getParameters() { |
aoqi@0 | 1632 | return params(); |
aoqi@0 | 1633 | } |
aoqi@0 | 1634 | |
aoqi@0 | 1635 | public boolean isVarArgs() { |
aoqi@0 | 1636 | return (flags() & VARARGS) != 0; |
aoqi@0 | 1637 | } |
aoqi@0 | 1638 | |
aoqi@0 | 1639 | public boolean isDefault() { |
aoqi@0 | 1640 | return (flags() & DEFAULT) != 0; |
aoqi@0 | 1641 | } |
aoqi@0 | 1642 | |
aoqi@0 | 1643 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
aoqi@0 | 1644 | return v.visitExecutable(this, p); |
aoqi@0 | 1645 | } |
aoqi@0 | 1646 | |
aoqi@0 | 1647 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
aoqi@0 | 1648 | return v.visitMethodSymbol(this, p); |
aoqi@0 | 1649 | } |
aoqi@0 | 1650 | |
aoqi@0 | 1651 | public Type getReceiverType() { |
aoqi@0 | 1652 | return asType().getReceiverType(); |
aoqi@0 | 1653 | } |
aoqi@0 | 1654 | |
aoqi@0 | 1655 | public Type getReturnType() { |
aoqi@0 | 1656 | return asType().getReturnType(); |
aoqi@0 | 1657 | } |
aoqi@0 | 1658 | |
aoqi@0 | 1659 | public List<Type> getThrownTypes() { |
aoqi@0 | 1660 | return asType().getThrownTypes(); |
aoqi@0 | 1661 | } |
aoqi@0 | 1662 | } |
aoqi@0 | 1663 | |
aoqi@0 | 1664 | /** A class for invokedynamic method calls. |
aoqi@0 | 1665 | */ |
aoqi@0 | 1666 | public static class DynamicMethodSymbol extends MethodSymbol { |
aoqi@0 | 1667 | |
aoqi@0 | 1668 | public Object[] staticArgs; |
aoqi@0 | 1669 | public Symbol bsm; |
aoqi@0 | 1670 | public int bsmKind; |
aoqi@0 | 1671 | |
aoqi@0 | 1672 | public DynamicMethodSymbol(Name name, Symbol owner, int bsmKind, MethodSymbol bsm, Type type, Object[] staticArgs) { |
aoqi@0 | 1673 | super(0, name, type, owner); |
aoqi@0 | 1674 | this.bsm = bsm; |
aoqi@0 | 1675 | this.bsmKind = bsmKind; |
aoqi@0 | 1676 | this.staticArgs = staticArgs; |
aoqi@0 | 1677 | } |
aoqi@0 | 1678 | |
aoqi@0 | 1679 | @Override |
aoqi@0 | 1680 | public boolean isDynamic() { |
aoqi@0 | 1681 | return true; |
aoqi@0 | 1682 | } |
aoqi@0 | 1683 | } |
aoqi@0 | 1684 | |
aoqi@0 | 1685 | /** A class for predefined operators. |
aoqi@0 | 1686 | */ |
aoqi@0 | 1687 | public static class OperatorSymbol extends MethodSymbol { |
aoqi@0 | 1688 | |
aoqi@0 | 1689 | public int opcode; |
aoqi@0 | 1690 | |
aoqi@0 | 1691 | public OperatorSymbol(Name name, Type type, int opcode, Symbol owner) { |
aoqi@0 | 1692 | super(PUBLIC | STATIC, name, type, owner); |
aoqi@0 | 1693 | this.opcode = opcode; |
aoqi@0 | 1694 | } |
aoqi@0 | 1695 | |
aoqi@0 | 1696 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
aoqi@0 | 1697 | return v.visitOperatorSymbol(this, p); |
aoqi@0 | 1698 | } |
aoqi@0 | 1699 | } |
aoqi@0 | 1700 | |
aoqi@0 | 1701 | /** Symbol completer interface. |
aoqi@0 | 1702 | */ |
aoqi@0 | 1703 | public static interface Completer { |
aoqi@0 | 1704 | void complete(Symbol sym) throws CompletionFailure; |
aoqi@0 | 1705 | } |
aoqi@0 | 1706 | |
aoqi@0 | 1707 | public static class CompletionFailure extends RuntimeException { |
aoqi@0 | 1708 | private static final long serialVersionUID = 0; |
aoqi@0 | 1709 | public Symbol sym; |
aoqi@0 | 1710 | |
aoqi@0 | 1711 | /** A diagnostic object describing the failure |
aoqi@0 | 1712 | */ |
aoqi@0 | 1713 | public JCDiagnostic diag; |
aoqi@0 | 1714 | |
aoqi@0 | 1715 | /** A localized string describing the failure. |
aoqi@0 | 1716 | * @deprecated Use {@code getDetail()} or {@code getMessage()} |
aoqi@0 | 1717 | */ |
aoqi@0 | 1718 | @Deprecated |
aoqi@0 | 1719 | public String errmsg; |
aoqi@0 | 1720 | |
aoqi@0 | 1721 | public CompletionFailure(Symbol sym, String errmsg) { |
aoqi@0 | 1722 | this.sym = sym; |
aoqi@0 | 1723 | this.errmsg = errmsg; |
aoqi@0 | 1724 | // this.printStackTrace();//DEBUG |
aoqi@0 | 1725 | } |
aoqi@0 | 1726 | |
aoqi@0 | 1727 | public CompletionFailure(Symbol sym, JCDiagnostic diag) { |
aoqi@0 | 1728 | this.sym = sym; |
aoqi@0 | 1729 | this.diag = diag; |
aoqi@0 | 1730 | // this.printStackTrace();//DEBUG |
aoqi@0 | 1731 | } |
aoqi@0 | 1732 | |
aoqi@0 | 1733 | public JCDiagnostic getDiagnostic() { |
aoqi@0 | 1734 | return diag; |
aoqi@0 | 1735 | } |
aoqi@0 | 1736 | |
aoqi@0 | 1737 | @Override |
aoqi@0 | 1738 | public String getMessage() { |
aoqi@0 | 1739 | if (diag != null) |
aoqi@0 | 1740 | return diag.getMessage(null); |
aoqi@0 | 1741 | else |
aoqi@0 | 1742 | return errmsg; |
aoqi@0 | 1743 | } |
aoqi@0 | 1744 | |
aoqi@0 | 1745 | public Object getDetailValue() { |
aoqi@0 | 1746 | return (diag != null ? diag : errmsg); |
aoqi@0 | 1747 | } |
aoqi@0 | 1748 | |
aoqi@0 | 1749 | @Override |
aoqi@0 | 1750 | public CompletionFailure initCause(Throwable cause) { |
aoqi@0 | 1751 | super.initCause(cause); |
aoqi@0 | 1752 | return this; |
aoqi@0 | 1753 | } |
aoqi@0 | 1754 | |
aoqi@0 | 1755 | } |
aoqi@0 | 1756 | |
aoqi@0 | 1757 | /** |
aoqi@0 | 1758 | * A visitor for symbols. A visitor is used to implement operations |
aoqi@0 | 1759 | * (or relations) on symbols. Most common operations on types are |
aoqi@0 | 1760 | * binary relations and this interface is designed for binary |
aoqi@0 | 1761 | * relations, that is, operations on the form |
aoqi@0 | 1762 | * Symbol × P → R. |
aoqi@0 | 1763 | * <!-- In plain text: Type x P -> R --> |
aoqi@0 | 1764 | * |
aoqi@0 | 1765 | * @param <R> the return type of the operation implemented by this |
aoqi@0 | 1766 | * visitor; use Void if no return type is needed. |
aoqi@0 | 1767 | * @param <P> the type of the second argument (the first being the |
aoqi@0 | 1768 | * symbol itself) of the operation implemented by this visitor; use |
aoqi@0 | 1769 | * Void if a second argument is not needed. |
aoqi@0 | 1770 | */ |
aoqi@0 | 1771 | public interface Visitor<R,P> { |
aoqi@0 | 1772 | R visitClassSymbol(ClassSymbol s, P arg); |
aoqi@0 | 1773 | R visitMethodSymbol(MethodSymbol s, P arg); |
aoqi@0 | 1774 | R visitPackageSymbol(PackageSymbol s, P arg); |
aoqi@0 | 1775 | R visitOperatorSymbol(OperatorSymbol s, P arg); |
aoqi@0 | 1776 | R visitVarSymbol(VarSymbol s, P arg); |
aoqi@0 | 1777 | R visitTypeSymbol(TypeSymbol s, P arg); |
aoqi@0 | 1778 | R visitSymbol(Symbol s, P arg); |
aoqi@0 | 1779 | } |
aoqi@0 | 1780 | } |