Wed, 13 Feb 2013 17:04:21 +0000
8006345: Report Synthesized Parameters in java.lang.reflect.Parameter API
8006896: ClassReader doesn't see MethodParameters attr for method of anon inner class
8007098: Output Synthesized Parameters to MethodParameters Attributes
Summary: Correctly report synthesized and mandated parameters
Reviewed-by: mcimadamore, jjg
Contributed-by: eric.mccorkle@oracle.com
duke@1 | 1 | /* |
jfranck@1491 | 2 | * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ohair@554 | 7 | * published by the Free Software Foundation. Oracle designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
ohair@554 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
ohair@554 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 22 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 23 | * questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | package com.sun.tools.javac.code; |
duke@1 | 27 | |
duke@1 | 28 | import java.util.Set; |
duke@1 | 29 | import java.util.concurrent.Callable; |
jjg@1357 | 30 | |
duke@1 | 31 | import javax.lang.model.element.*; |
duke@1 | 32 | import javax.tools.JavaFileObject; |
duke@1 | 33 | |
duke@1 | 34 | import com.sun.tools.javac.code.Type.*; |
duke@1 | 35 | import com.sun.tools.javac.comp.Attr; |
duke@1 | 36 | import com.sun.tools.javac.comp.AttrContext; |
duke@1 | 37 | import com.sun.tools.javac.comp.Env; |
duke@1 | 38 | import com.sun.tools.javac.jvm.*; |
duke@1 | 39 | import com.sun.tools.javac.model.*; |
duke@1 | 40 | import com.sun.tools.javac.tree.JCTree; |
jjg@1357 | 41 | import com.sun.tools.javac.util.*; |
jjg@1357 | 42 | import com.sun.tools.javac.util.Name; |
duke@1 | 43 | import static com.sun.tools.javac.code.Flags.*; |
duke@1 | 44 | import static com.sun.tools.javac.code.Kinds.*; |
jjg@1374 | 45 | import static com.sun.tools.javac.code.TypeTag.CLASS; |
jjg@1374 | 46 | import static com.sun.tools.javac.code.TypeTag.FORALL; |
jjg@1374 | 47 | import static com.sun.tools.javac.code.TypeTag.TYPEVAR; |
duke@1 | 48 | |
duke@1 | 49 | /** Root class for Java symbols. It contains subclasses |
duke@1 | 50 | * for specific sorts of symbols, such as variables, methods and operators, |
duke@1 | 51 | * types, packages. Each subclass is represented as a static inner class |
duke@1 | 52 | * inside Symbol. |
duke@1 | 53 | * |
jjg@581 | 54 | * <p><b>This is NOT part of any supported API. |
jjg@581 | 55 | * If you write code that depends on this, you do so at your own risk. |
duke@1 | 56 | * This code and its internal interfaces are subject to change or |
duke@1 | 57 | * deletion without notice.</b> |
duke@1 | 58 | */ |
duke@1 | 59 | public abstract class Symbol implements Element { |
duke@1 | 60 | // public Throwable debug = new Throwable(); |
duke@1 | 61 | |
duke@1 | 62 | /** The kind of this symbol. |
duke@1 | 63 | * @see Kinds |
duke@1 | 64 | */ |
duke@1 | 65 | public int kind; |
duke@1 | 66 | |
duke@1 | 67 | /** The flags of this symbol. |
duke@1 | 68 | */ |
duke@1 | 69 | public long flags_field; |
duke@1 | 70 | |
duke@1 | 71 | /** An accessor method for the flags of this symbol. |
duke@1 | 72 | * Flags of class symbols should be accessed through the accessor |
duke@1 | 73 | * method to make sure that the class symbol is loaded. |
duke@1 | 74 | */ |
duke@1 | 75 | public long flags() { return flags_field; } |
duke@1 | 76 | |
jfranck@1313 | 77 | /** The attributes of this symbol are contained in this |
jfranck@1313 | 78 | * Annotations. The Annotations instance is NOT immutable. |
duke@1 | 79 | */ |
jfranck@1313 | 80 | public final Annotations annotations = new Annotations(this); |
duke@1 | 81 | |
duke@1 | 82 | /** An accessor method for the attributes of this symbol. |
duke@1 | 83 | * Attributes of class symbols should be accessed through the accessor |
duke@1 | 84 | * method to make sure that the class symbol is loaded. |
duke@1 | 85 | */ |
jfranck@1464 | 86 | public List<Attribute.Compound> getRawAttributes() { |
jjg@1521 | 87 | return annotations.getDeclarationAttributes(); |
jjg@1521 | 88 | } |
jjg@1521 | 89 | |
jjg@1521 | 90 | /** An accessor method for the type attributes of this symbol. |
jjg@1521 | 91 | * Attributes of class symbols should be accessed through the accessor |
jjg@1521 | 92 | * method to make sure that the class symbol is loaded. |
jjg@1521 | 93 | */ |
jjg@1521 | 94 | public List<Attribute.TypeCompound> getRawTypeAttributes() { |
jjg@1521 | 95 | return annotations.getTypeAttributes(); |
duke@1 | 96 | } |
duke@1 | 97 | |
duke@1 | 98 | /** Fetch a particular annotation from a symbol. */ |
duke@1 | 99 | public Attribute.Compound attribute(Symbol anno) { |
jfranck@1464 | 100 | for (Attribute.Compound a : getRawAttributes()) { |
duke@1 | 101 | if (a.type.tsym == anno) return a; |
jfranck@1313 | 102 | } |
duke@1 | 103 | return null; |
duke@1 | 104 | } |
duke@1 | 105 | |
duke@1 | 106 | /** The name of this symbol in Utf8 representation. |
duke@1 | 107 | */ |
duke@1 | 108 | public Name name; |
duke@1 | 109 | |
duke@1 | 110 | /** The type of this symbol. |
duke@1 | 111 | */ |
duke@1 | 112 | public Type type; |
duke@1 | 113 | |
duke@1 | 114 | /** The owner of this symbol. |
duke@1 | 115 | */ |
duke@1 | 116 | public Symbol owner; |
duke@1 | 117 | |
duke@1 | 118 | /** The completer of this symbol. |
duke@1 | 119 | */ |
duke@1 | 120 | public Completer completer; |
duke@1 | 121 | |
duke@1 | 122 | /** A cache for the type erasure of this symbol. |
duke@1 | 123 | */ |
duke@1 | 124 | public Type erasure_field; |
duke@1 | 125 | |
duke@1 | 126 | /** Construct a symbol with given kind, flags, name, type and owner. |
duke@1 | 127 | */ |
duke@1 | 128 | public Symbol(int kind, long flags, Name name, Type type, Symbol owner) { |
duke@1 | 129 | this.kind = kind; |
duke@1 | 130 | this.flags_field = flags; |
duke@1 | 131 | this.type = type; |
duke@1 | 132 | this.owner = owner; |
duke@1 | 133 | this.completer = null; |
duke@1 | 134 | this.erasure_field = null; |
duke@1 | 135 | this.name = name; |
duke@1 | 136 | } |
duke@1 | 137 | |
duke@1 | 138 | /** Clone this symbol with new owner. |
duke@1 | 139 | * Legal only for fields and methods. |
duke@1 | 140 | */ |
duke@1 | 141 | public Symbol clone(Symbol newOwner) { |
duke@1 | 142 | throw new AssertionError(); |
duke@1 | 143 | } |
duke@1 | 144 | |
mcimadamore@121 | 145 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
mcimadamore@121 | 146 | return v.visitSymbol(this, p); |
mcimadamore@121 | 147 | } |
mcimadamore@121 | 148 | |
duke@1 | 149 | /** The Java source which this symbol represents. |
duke@1 | 150 | * A description of this symbol; overrides Object. |
duke@1 | 151 | */ |
duke@1 | 152 | public String toString() { |
duke@1 | 153 | return name.toString(); |
duke@1 | 154 | } |
duke@1 | 155 | |
duke@1 | 156 | /** A Java source description of the location of this symbol; used for |
mcimadamore@80 | 157 | * error reporting. |
mcimadamore@80 | 158 | * |
mcimadamore@80 | 159 | * @return null if the symbol is a package or a toplevel class defined in |
mcimadamore@80 | 160 | * the default package; otherwise, the owner symbol is returned |
duke@1 | 161 | */ |
mcimadamore@80 | 162 | public Symbol location() { |
mcimadamore@1085 | 163 | if (owner.name == null || (owner.name.isEmpty() && |
mcimadamore@1085 | 164 | (owner.flags() & BLOCK) == 0 && owner.kind != PCK && owner.kind != TYP)) { |
mcimadamore@80 | 165 | return null; |
duke@1 | 166 | } |
mcimadamore@80 | 167 | return owner; |
duke@1 | 168 | } |
duke@1 | 169 | |
mcimadamore@80 | 170 | public Symbol location(Type site, Types types) { |
jjg@113 | 171 | if (owner.name == null || owner.name.isEmpty()) { |
duke@1 | 172 | return location(); |
duke@1 | 173 | } |
jjg@1374 | 174 | if (owner.type.hasTag(CLASS)) { |
duke@1 | 175 | Type ownertype = types.asOuterSuper(site, owner); |
mcimadamore@80 | 176 | if (ownertype != null) return ownertype.tsym; |
duke@1 | 177 | } |
mcimadamore@80 | 178 | return owner; |
duke@1 | 179 | } |
duke@1 | 180 | |
mcimadamore@1341 | 181 | public Symbol baseSymbol() { |
mcimadamore@1341 | 182 | return this; |
mcimadamore@1341 | 183 | } |
mcimadamore@1341 | 184 | |
duke@1 | 185 | /** The symbol's erased type. |
duke@1 | 186 | */ |
duke@1 | 187 | public Type erasure(Types types) { |
duke@1 | 188 | if (erasure_field == null) |
duke@1 | 189 | erasure_field = types.erasure(type); |
duke@1 | 190 | return erasure_field; |
duke@1 | 191 | } |
duke@1 | 192 | |
duke@1 | 193 | /** The external type of a symbol. This is the symbol's erased type |
duke@1 | 194 | * except for constructors of inner classes which get the enclosing |
duke@1 | 195 | * instance class added as first argument. |
duke@1 | 196 | */ |
duke@1 | 197 | public Type externalType(Types types) { |
duke@1 | 198 | Type t = erasure(types); |
jjg@113 | 199 | if (name == name.table.names.init && owner.hasOuterInstance()) { |
duke@1 | 200 | Type outerThisType = types.erasure(owner.type.getEnclosingType()); |
duke@1 | 201 | return new MethodType(t.getParameterTypes().prepend(outerThisType), |
duke@1 | 202 | t.getReturnType(), |
duke@1 | 203 | t.getThrownTypes(), |
duke@1 | 204 | t.tsym); |
duke@1 | 205 | } else { |
duke@1 | 206 | return t; |
duke@1 | 207 | } |
duke@1 | 208 | } |
duke@1 | 209 | |
duke@1 | 210 | public boolean isStatic() { |
duke@1 | 211 | return |
duke@1 | 212 | (flags() & STATIC) != 0 || |
duke@1 | 213 | (owner.flags() & INTERFACE) != 0 && kind != MTH; |
duke@1 | 214 | } |
duke@1 | 215 | |
duke@1 | 216 | public boolean isInterface() { |
duke@1 | 217 | return (flags() & INTERFACE) != 0; |
duke@1 | 218 | } |
duke@1 | 219 | |
mcimadamore@1565 | 220 | public boolean isPrivate() { |
mcimadamore@1565 | 221 | return (flags_field & Flags.AccessFlags) == PRIVATE; |
mcimadamore@1565 | 222 | } |
mcimadamore@1565 | 223 | |
mcimadamore@1565 | 224 | public boolean isEnum() { |
mcimadamore@1565 | 225 | return (flags() & ENUM) != 0; |
mcimadamore@1565 | 226 | } |
mcimadamore@1565 | 227 | |
duke@1 | 228 | /** Is this symbol declared (directly or indirectly) local |
duke@1 | 229 | * to a method or variable initializer? |
duke@1 | 230 | * Also includes fields of inner classes which are in |
duke@1 | 231 | * turn local to a method or variable initializer. |
duke@1 | 232 | */ |
duke@1 | 233 | public boolean isLocal() { |
duke@1 | 234 | return |
duke@1 | 235 | (owner.kind & (VAR | MTH)) != 0 || |
duke@1 | 236 | (owner.kind == TYP && owner.isLocal()); |
duke@1 | 237 | } |
duke@1 | 238 | |
mcimadamore@537 | 239 | /** Has this symbol an empty name? This includes anonymous |
mcimadamore@537 | 240 | * inner classses. |
mcimadamore@537 | 241 | */ |
mcimadamore@537 | 242 | public boolean isAnonymous() { |
mcimadamore@537 | 243 | return name.isEmpty(); |
mcimadamore@537 | 244 | } |
mcimadamore@537 | 245 | |
duke@1 | 246 | /** Is this symbol a constructor? |
duke@1 | 247 | */ |
duke@1 | 248 | public boolean isConstructor() { |
jjg@113 | 249 | return name == name.table.names.init; |
duke@1 | 250 | } |
duke@1 | 251 | |
duke@1 | 252 | /** The fully qualified name of this symbol. |
duke@1 | 253 | * This is the same as the symbol's name except for class symbols, |
duke@1 | 254 | * which are handled separately. |
duke@1 | 255 | */ |
duke@1 | 256 | public Name getQualifiedName() { |
duke@1 | 257 | return name; |
duke@1 | 258 | } |
duke@1 | 259 | |
duke@1 | 260 | /** The fully qualified name of this symbol after converting to flat |
duke@1 | 261 | * representation. This is the same as the symbol's name except for |
duke@1 | 262 | * class symbols, which are handled separately. |
duke@1 | 263 | */ |
duke@1 | 264 | public Name flatName() { |
duke@1 | 265 | return getQualifiedName(); |
duke@1 | 266 | } |
duke@1 | 267 | |
duke@1 | 268 | /** If this is a class or package, its members, otherwise null. |
duke@1 | 269 | */ |
duke@1 | 270 | public Scope members() { |
duke@1 | 271 | return null; |
duke@1 | 272 | } |
duke@1 | 273 | |
duke@1 | 274 | /** A class is an inner class if it it has an enclosing instance class. |
duke@1 | 275 | */ |
duke@1 | 276 | public boolean isInner() { |
jjg@1374 | 277 | return type.getEnclosingType().hasTag(CLASS); |
duke@1 | 278 | } |
duke@1 | 279 | |
duke@1 | 280 | /** An inner class has an outer instance if it is not an interface |
duke@1 | 281 | * it has an enclosing instance class which might be referenced from the class. |
duke@1 | 282 | * Nested classes can see instance members of their enclosing class. |
duke@1 | 283 | * Their constructors carry an additional this$n parameter, inserted |
duke@1 | 284 | * implicitly by the compiler. |
duke@1 | 285 | * |
duke@1 | 286 | * @see #isInner |
duke@1 | 287 | */ |
duke@1 | 288 | public boolean hasOuterInstance() { |
duke@1 | 289 | return |
jjg@1374 | 290 | type.getEnclosingType().hasTag(CLASS) && (flags() & (INTERFACE | NOOUTERTHIS)) == 0; |
duke@1 | 291 | } |
duke@1 | 292 | |
duke@1 | 293 | /** The closest enclosing class of this symbol's declaration. |
duke@1 | 294 | */ |
duke@1 | 295 | public ClassSymbol enclClass() { |
duke@1 | 296 | Symbol c = this; |
duke@1 | 297 | while (c != null && |
jjg@1374 | 298 | ((c.kind & TYP) == 0 || !c.type.hasTag(CLASS))) { |
duke@1 | 299 | c = c.owner; |
duke@1 | 300 | } |
duke@1 | 301 | return (ClassSymbol)c; |
duke@1 | 302 | } |
duke@1 | 303 | |
duke@1 | 304 | /** The outermost class which indirectly owns this symbol. |
duke@1 | 305 | */ |
duke@1 | 306 | public ClassSymbol outermostClass() { |
duke@1 | 307 | Symbol sym = this; |
duke@1 | 308 | Symbol prev = null; |
duke@1 | 309 | while (sym.kind != PCK) { |
duke@1 | 310 | prev = sym; |
duke@1 | 311 | sym = sym.owner; |
duke@1 | 312 | } |
duke@1 | 313 | return (ClassSymbol) prev; |
duke@1 | 314 | } |
duke@1 | 315 | |
duke@1 | 316 | /** The package which indirectly owns this symbol. |
duke@1 | 317 | */ |
duke@1 | 318 | public PackageSymbol packge() { |
duke@1 | 319 | Symbol sym = this; |
duke@1 | 320 | while (sym.kind != PCK) { |
duke@1 | 321 | sym = sym.owner; |
duke@1 | 322 | } |
duke@1 | 323 | return (PackageSymbol) sym; |
duke@1 | 324 | } |
duke@1 | 325 | |
duke@1 | 326 | /** Is this symbol a subclass of `base'? Only defined for ClassSymbols. |
duke@1 | 327 | */ |
duke@1 | 328 | public boolean isSubClass(Symbol base, Types types) { |
duke@1 | 329 | throw new AssertionError("isSubClass " + this); |
duke@1 | 330 | } |
duke@1 | 331 | |
duke@1 | 332 | /** Fully check membership: hierarchy, protection, and hiding. |
duke@1 | 333 | * Does not exclude methods not inherited due to overriding. |
duke@1 | 334 | */ |
duke@1 | 335 | public boolean isMemberOf(TypeSymbol clazz, Types types) { |
duke@1 | 336 | return |
duke@1 | 337 | owner == clazz || |
duke@1 | 338 | clazz.isSubClass(owner, types) && |
duke@1 | 339 | isInheritedIn(clazz, types) && |
duke@1 | 340 | !hiddenIn((ClassSymbol)clazz, types); |
duke@1 | 341 | } |
duke@1 | 342 | |
duke@1 | 343 | /** Is this symbol the same as or enclosed by the given class? */ |
duke@1 | 344 | public boolean isEnclosedBy(ClassSymbol clazz) { |
duke@1 | 345 | for (Symbol sym = this; sym.kind != PCK; sym = sym.owner) |
duke@1 | 346 | if (sym == clazz) return true; |
duke@1 | 347 | return false; |
duke@1 | 348 | } |
duke@1 | 349 | |
duke@1 | 350 | /** Check for hiding. Note that this doesn't handle multiple |
duke@1 | 351 | * (interface) inheritance. */ |
duke@1 | 352 | private boolean hiddenIn(ClassSymbol clazz, Types types) { |
duke@1 | 353 | if (kind == MTH && (flags() & STATIC) == 0) return false; |
duke@1 | 354 | while (true) { |
duke@1 | 355 | if (owner == clazz) return false; |
duke@1 | 356 | Scope.Entry e = clazz.members().lookup(name); |
duke@1 | 357 | while (e.scope != null) { |
duke@1 | 358 | if (e.sym == this) return false; |
duke@1 | 359 | if (e.sym.kind == kind && |
duke@1 | 360 | (kind != MTH || |
duke@1 | 361 | (e.sym.flags() & STATIC) != 0 && |
duke@1 | 362 | types.isSubSignature(e.sym.type, type))) |
duke@1 | 363 | return true; |
duke@1 | 364 | e = e.next(); |
duke@1 | 365 | } |
duke@1 | 366 | Type superType = types.supertype(clazz.type); |
jjg@1374 | 367 | if (!superType.hasTag(CLASS)) return false; |
duke@1 | 368 | clazz = (ClassSymbol)superType.tsym; |
duke@1 | 369 | } |
duke@1 | 370 | } |
duke@1 | 371 | |
duke@1 | 372 | /** Is this symbol inherited into a given class? |
duke@1 | 373 | * PRE: If symbol's owner is a interface, |
duke@1 | 374 | * it is already assumed that the interface is a superinterface |
duke@1 | 375 | * of given class. |
duke@1 | 376 | * @param clazz The class for which we want to establish membership. |
duke@1 | 377 | * This must be a subclass of the member's owner. |
duke@1 | 378 | */ |
duke@1 | 379 | public boolean isInheritedIn(Symbol clazz, Types types) { |
duke@1 | 380 | switch ((int)(flags_field & Flags.AccessFlags)) { |
duke@1 | 381 | default: // error recovery |
duke@1 | 382 | case PUBLIC: |
duke@1 | 383 | return true; |
duke@1 | 384 | case PRIVATE: |
duke@1 | 385 | return this.owner == clazz; |
duke@1 | 386 | case PROTECTED: |
duke@1 | 387 | // we model interfaces as extending Object |
duke@1 | 388 | return (clazz.flags() & INTERFACE) == 0; |
duke@1 | 389 | case 0: |
duke@1 | 390 | PackageSymbol thisPackage = this.packge(); |
duke@1 | 391 | for (Symbol sup = clazz; |
duke@1 | 392 | sup != null && sup != this.owner; |
duke@1 | 393 | sup = types.supertype(sup.type).tsym) { |
jjg@1374 | 394 | while (sup.type.hasTag(TYPEVAR)) |
mcimadamore@155 | 395 | sup = sup.type.getUpperBound().tsym; |
duke@1 | 396 | if (sup.type.isErroneous()) |
duke@1 | 397 | return true; // error recovery |
duke@1 | 398 | if ((sup.flags() & COMPOUND) != 0) |
duke@1 | 399 | continue; |
duke@1 | 400 | if (sup.packge() != thisPackage) |
duke@1 | 401 | return false; |
duke@1 | 402 | } |
duke@1 | 403 | return (clazz.flags() & INTERFACE) == 0; |
duke@1 | 404 | } |
duke@1 | 405 | } |
duke@1 | 406 | |
duke@1 | 407 | /** The (variable or method) symbol seen as a member of given |
duke@1 | 408 | * class type`site' (this might change the symbol's type). |
duke@1 | 409 | * This is used exclusively for producing diagnostics. |
duke@1 | 410 | */ |
duke@1 | 411 | public Symbol asMemberOf(Type site, Types types) { |
duke@1 | 412 | throw new AssertionError(); |
duke@1 | 413 | } |
duke@1 | 414 | |
duke@1 | 415 | /** Does this method symbol override `other' symbol, when both are seen as |
duke@1 | 416 | * members of class `origin'? It is assumed that _other is a member |
duke@1 | 417 | * of origin. |
duke@1 | 418 | * |
duke@1 | 419 | * It is assumed that both symbols have the same name. The static |
duke@1 | 420 | * modifier is ignored for this test. |
duke@1 | 421 | * |
duke@1 | 422 | * See JLS 8.4.6.1 (without transitivity) and 8.4.6.4 |
duke@1 | 423 | */ |
duke@1 | 424 | public boolean overrides(Symbol _other, TypeSymbol origin, Types types, boolean checkResult) { |
duke@1 | 425 | return false; |
duke@1 | 426 | } |
duke@1 | 427 | |
duke@1 | 428 | /** Complete the elaboration of this symbol's definition. |
duke@1 | 429 | */ |
duke@1 | 430 | public void complete() throws CompletionFailure { |
duke@1 | 431 | if (completer != null) { |
duke@1 | 432 | Completer c = completer; |
duke@1 | 433 | completer = null; |
duke@1 | 434 | c.complete(this); |
duke@1 | 435 | } |
duke@1 | 436 | } |
duke@1 | 437 | |
duke@1 | 438 | /** True if the symbol represents an entity that exists. |
duke@1 | 439 | */ |
duke@1 | 440 | public boolean exists() { |
duke@1 | 441 | return true; |
duke@1 | 442 | } |
duke@1 | 443 | |
duke@1 | 444 | public Type asType() { |
duke@1 | 445 | return type; |
duke@1 | 446 | } |
duke@1 | 447 | |
duke@1 | 448 | public Symbol getEnclosingElement() { |
duke@1 | 449 | return owner; |
duke@1 | 450 | } |
duke@1 | 451 | |
duke@1 | 452 | public ElementKind getKind() { |
duke@1 | 453 | return ElementKind.OTHER; // most unkind |
duke@1 | 454 | } |
duke@1 | 455 | |
duke@1 | 456 | public Set<Modifier> getModifiers() { |
mcimadamore@1415 | 457 | long flags = flags(); |
mcimadamore@1415 | 458 | return Flags.asModifierSet((flags & DEFAULT) != 0 ? flags & ~ABSTRACT : flags); |
duke@1 | 459 | } |
duke@1 | 460 | |
duke@1 | 461 | public Name getSimpleName() { |
duke@1 | 462 | return name; |
duke@1 | 463 | } |
duke@1 | 464 | |
duke@1 | 465 | /** |
jfranck@1464 | 466 | * This is the implementation for {@code |
jfranck@1464 | 467 | * javax.lang.model.element.Element.getAnnotationMirrors()}. |
jfranck@1464 | 468 | */ |
jfranck@1491 | 469 | public final List<? extends AnnotationMirror> getAnnotationMirrors() { |
jfranck@1464 | 470 | return getRawAttributes(); |
jfranck@1464 | 471 | } |
jfranck@1464 | 472 | |
jfranck@1464 | 473 | /** |
jjg@1521 | 474 | * TODO: Should there be a {@code |
jjg@1521 | 475 | * javax.lang.model.element.Element.getTypeAnnotationMirrors()}. |
jjg@1521 | 476 | */ |
jjg@1521 | 477 | public final List<Attribute.TypeCompound> getTypeAnnotationMirrors() { |
jjg@1521 | 478 | return getRawTypeAttributes(); |
jjg@1521 | 479 | } |
jjg@1521 | 480 | |
jjg@1521 | 481 | /** |
duke@1 | 482 | * @deprecated this method should never be used by javac internally. |
duke@1 | 483 | */ |
duke@1 | 484 | @Deprecated |
duke@1 | 485 | public <A extends java.lang.annotation.Annotation> A getAnnotation(Class<A> annoType) { |
duke@1 | 486 | return JavacElements.getAnnotation(this, annoType); |
duke@1 | 487 | } |
duke@1 | 488 | |
jfranck@1491 | 489 | // This method is part of the javax.lang.model API, do not use this in javac code. |
jfranck@1564 | 490 | public <A extends java.lang.annotation.Annotation> A[] getAnnotationsByType(Class<A> annoType) { |
jfranck@1491 | 491 | return JavacElements.getAnnotations(this, annoType); |
jfranck@1491 | 492 | } |
jfranck@1491 | 493 | |
duke@1 | 494 | // TODO: getEnclosedElements should return a javac List, fix in FilteredMemberList |
duke@1 | 495 | public java.util.List<Symbol> getEnclosedElements() { |
duke@1 | 496 | return List.nil(); |
duke@1 | 497 | } |
duke@1 | 498 | |
duke@1 | 499 | public List<TypeSymbol> getTypeParameters() { |
duke@1 | 500 | ListBuffer<TypeSymbol> l = ListBuffer.lb(); |
duke@1 | 501 | for (Type t : type.getTypeArguments()) { |
duke@1 | 502 | l.append(t.tsym); |
duke@1 | 503 | } |
duke@1 | 504 | return l.toList(); |
duke@1 | 505 | } |
duke@1 | 506 | |
vromero@1541 | 507 | public static class DelegatedSymbol<T extends Symbol> extends Symbol { |
vromero@1541 | 508 | protected T other; |
vromero@1541 | 509 | public DelegatedSymbol(T other) { |
duke@1 | 510 | super(other.kind, other.flags_field, other.name, other.type, other.owner); |
duke@1 | 511 | this.other = other; |
duke@1 | 512 | } |
duke@1 | 513 | public String toString() { return other.toString(); } |
mcimadamore@80 | 514 | public Symbol location() { return other.location(); } |
mcimadamore@80 | 515 | public Symbol location(Type site, Types types) { return other.location(site, types); } |
mcimadamore@1415 | 516 | public Symbol baseSymbol() { return other; } |
duke@1 | 517 | public Type erasure(Types types) { return other.erasure(types); } |
duke@1 | 518 | public Type externalType(Types types) { return other.externalType(types); } |
duke@1 | 519 | public boolean isLocal() { return other.isLocal(); } |
duke@1 | 520 | public boolean isConstructor() { return other.isConstructor(); } |
duke@1 | 521 | public Name getQualifiedName() { return other.getQualifiedName(); } |
duke@1 | 522 | public Name flatName() { return other.flatName(); } |
duke@1 | 523 | public Scope members() { return other.members(); } |
duke@1 | 524 | public boolean isInner() { return other.isInner(); } |
duke@1 | 525 | public boolean hasOuterInstance() { return other.hasOuterInstance(); } |
duke@1 | 526 | public ClassSymbol enclClass() { return other.enclClass(); } |
duke@1 | 527 | public ClassSymbol outermostClass() { return other.outermostClass(); } |
duke@1 | 528 | public PackageSymbol packge() { return other.packge(); } |
duke@1 | 529 | public boolean isSubClass(Symbol base, Types types) { return other.isSubClass(base, types); } |
duke@1 | 530 | public boolean isMemberOf(TypeSymbol clazz, Types types) { return other.isMemberOf(clazz, types); } |
duke@1 | 531 | public boolean isEnclosedBy(ClassSymbol clazz) { return other.isEnclosedBy(clazz); } |
duke@1 | 532 | public boolean isInheritedIn(Symbol clazz, Types types) { return other.isInheritedIn(clazz, types); } |
duke@1 | 533 | public Symbol asMemberOf(Type site, Types types) { return other.asMemberOf(site, types); } |
duke@1 | 534 | public void complete() throws CompletionFailure { other.complete(); } |
duke@1 | 535 | |
duke@1 | 536 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
duke@1 | 537 | return other.accept(v, p); |
duke@1 | 538 | } |
mcimadamore@121 | 539 | |
mcimadamore@121 | 540 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
mcimadamore@121 | 541 | return v.visitSymbol(other, p); |
mcimadamore@121 | 542 | } |
vromero@1541 | 543 | |
vromero@1541 | 544 | public T getUnderlyingSymbol() { |
vromero@1541 | 545 | return other; |
vromero@1541 | 546 | } |
duke@1 | 547 | } |
duke@1 | 548 | |
duke@1 | 549 | /** A class for type symbols. Type variables are represented by instances |
duke@1 | 550 | * of this class, classes and packages by instances of subclasses. |
duke@1 | 551 | */ |
duke@1 | 552 | public static class TypeSymbol |
duke@1 | 553 | extends Symbol implements TypeParameterElement { |
duke@1 | 554 | // Implements TypeParameterElement because type parameters don't |
duke@1 | 555 | // have their own TypeSymbol subclass. |
duke@1 | 556 | // TODO: type parameters should have their own TypeSymbol subclass |
duke@1 | 557 | |
duke@1 | 558 | public TypeSymbol(long flags, Name name, Type type, Symbol owner) { |
duke@1 | 559 | super(TYP, flags, name, type, owner); |
duke@1 | 560 | } |
duke@1 | 561 | |
duke@1 | 562 | /** form a fully qualified name from a name and an owner |
duke@1 | 563 | */ |
duke@1 | 564 | static public Name formFullName(Name name, Symbol owner) { |
duke@1 | 565 | if (owner == null) return name; |
duke@1 | 566 | if (((owner.kind != ERR)) && |
duke@1 | 567 | ((owner.kind & (VAR | MTH)) != 0 |
jjg@1374 | 568 | || (owner.kind == TYP && owner.type.hasTag(TYPEVAR)) |
duke@1 | 569 | )) return name; |
duke@1 | 570 | Name prefix = owner.getQualifiedName(); |
jjg@113 | 571 | if (prefix == null || prefix == prefix.table.names.empty) |
duke@1 | 572 | return name; |
duke@1 | 573 | else return prefix.append('.', name); |
duke@1 | 574 | } |
duke@1 | 575 | |
duke@1 | 576 | /** form a fully qualified name from a name and an owner, after |
duke@1 | 577 | * converting to flat representation |
duke@1 | 578 | */ |
duke@1 | 579 | static public Name formFlatName(Name name, Symbol owner) { |
duke@1 | 580 | if (owner == null || |
duke@1 | 581 | (owner.kind & (VAR | MTH)) != 0 |
jjg@1374 | 582 | || (owner.kind == TYP && owner.type.hasTag(TYPEVAR)) |
duke@1 | 583 | ) return name; |
duke@1 | 584 | char sep = owner.kind == TYP ? '$' : '.'; |
duke@1 | 585 | Name prefix = owner.flatName(); |
jjg@113 | 586 | if (prefix == null || prefix == prefix.table.names.empty) |
duke@1 | 587 | return name; |
duke@1 | 588 | else return prefix.append(sep, name); |
duke@1 | 589 | } |
duke@1 | 590 | |
duke@1 | 591 | /** |
duke@1 | 592 | * A total ordering between type symbols that refines the |
duke@1 | 593 | * class inheritance graph. |
duke@1 | 594 | * |
duke@1 | 595 | * Typevariables always precede other kinds of symbols. |
duke@1 | 596 | */ |
duke@1 | 597 | public final boolean precedes(TypeSymbol that, Types types) { |
duke@1 | 598 | if (this == that) |
duke@1 | 599 | return false; |
duke@1 | 600 | if (this.type.tag == that.type.tag) { |
jjg@1374 | 601 | if (this.type.hasTag(CLASS)) { |
duke@1 | 602 | return |
duke@1 | 603 | types.rank(that.type) < types.rank(this.type) || |
duke@1 | 604 | types.rank(that.type) == types.rank(this.type) && |
duke@1 | 605 | that.getQualifiedName().compareTo(this.getQualifiedName()) < 0; |
jjg@1374 | 606 | } else if (this.type.hasTag(TYPEVAR)) { |
duke@1 | 607 | return types.isSubtype(this.type, that.type); |
duke@1 | 608 | } |
duke@1 | 609 | } |
jjg@1374 | 610 | return this.type.hasTag(TYPEVAR); |
duke@1 | 611 | } |
duke@1 | 612 | |
duke@1 | 613 | // For type params; overridden in subclasses. |
duke@1 | 614 | public ElementKind getKind() { |
duke@1 | 615 | return ElementKind.TYPE_PARAMETER; |
duke@1 | 616 | } |
duke@1 | 617 | |
duke@1 | 618 | public java.util.List<Symbol> getEnclosedElements() { |
duke@1 | 619 | List<Symbol> list = List.nil(); |
jjg@1374 | 620 | if (kind == TYP && type.hasTag(TYPEVAR)) { |
sundar@666 | 621 | return list; |
sundar@666 | 622 | } |
duke@1 | 623 | for (Scope.Entry e = members().elems; e != null; e = e.sibling) { |
duke@1 | 624 | if (e.sym != null && (e.sym.flags() & SYNTHETIC) == 0 && e.sym.owner == this) |
duke@1 | 625 | list = list.prepend(e.sym); |
duke@1 | 626 | } |
duke@1 | 627 | return list; |
duke@1 | 628 | } |
duke@1 | 629 | |
duke@1 | 630 | // For type params. |
duke@1 | 631 | // Perhaps not needed if getEnclosingElement can be spec'ed |
duke@1 | 632 | // to do the same thing. |
duke@1 | 633 | // TODO: getGenericElement() might not be needed |
duke@1 | 634 | public Symbol getGenericElement() { |
duke@1 | 635 | return owner; |
duke@1 | 636 | } |
duke@1 | 637 | |
duke@1 | 638 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
jjg@1374 | 639 | Assert.check(type.hasTag(TYPEVAR)); // else override will be invoked |
duke@1 | 640 | return v.visitTypeParameter(this, p); |
duke@1 | 641 | } |
duke@1 | 642 | |
mcimadamore@121 | 643 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
mcimadamore@121 | 644 | return v.visitTypeSymbol(this, p); |
mcimadamore@121 | 645 | } |
mcimadamore@121 | 646 | |
duke@1 | 647 | public List<Type> getBounds() { |
duke@1 | 648 | TypeVar t = (TypeVar)type; |
duke@1 | 649 | Type bound = t.getUpperBound(); |
duke@1 | 650 | if (!bound.isCompound()) |
duke@1 | 651 | return List.of(bound); |
duke@1 | 652 | ClassType ct = (ClassType)bound; |
duke@1 | 653 | if (!ct.tsym.erasure_field.isInterface()) { |
duke@1 | 654 | return ct.interfaces_field.prepend(ct.supertype_field); |
duke@1 | 655 | } else { |
duke@1 | 656 | // No superclass was given in bounds. |
duke@1 | 657 | // In this case, supertype is Object, erasure is first interface. |
duke@1 | 658 | return ct.interfaces_field; |
duke@1 | 659 | } |
duke@1 | 660 | } |
duke@1 | 661 | } |
duke@1 | 662 | |
duke@1 | 663 | /** A class for package symbols |
duke@1 | 664 | */ |
duke@1 | 665 | public static class PackageSymbol extends TypeSymbol |
duke@1 | 666 | implements PackageElement { |
duke@1 | 667 | |
duke@1 | 668 | public Scope members_field; |
duke@1 | 669 | public Name fullname; |
duke@1 | 670 | public ClassSymbol package_info; // see bug 6443073 |
duke@1 | 671 | |
duke@1 | 672 | public PackageSymbol(Name name, Type type, Symbol owner) { |
duke@1 | 673 | super(0, name, type, owner); |
duke@1 | 674 | this.kind = PCK; |
duke@1 | 675 | this.members_field = null; |
duke@1 | 676 | this.fullname = formFullName(name, owner); |
duke@1 | 677 | } |
duke@1 | 678 | |
duke@1 | 679 | public PackageSymbol(Name name, Symbol owner) { |
duke@1 | 680 | this(name, null, owner); |
duke@1 | 681 | this.type = new PackageType(this); |
duke@1 | 682 | } |
duke@1 | 683 | |
duke@1 | 684 | public String toString() { |
duke@1 | 685 | return fullname.toString(); |
duke@1 | 686 | } |
duke@1 | 687 | |
duke@1 | 688 | public Name getQualifiedName() { |
duke@1 | 689 | return fullname; |
duke@1 | 690 | } |
duke@1 | 691 | |
duke@1 | 692 | public boolean isUnnamed() { |
duke@1 | 693 | return name.isEmpty() && owner != null; |
duke@1 | 694 | } |
duke@1 | 695 | |
duke@1 | 696 | public Scope members() { |
duke@1 | 697 | if (completer != null) complete(); |
duke@1 | 698 | return members_field; |
duke@1 | 699 | } |
duke@1 | 700 | |
duke@1 | 701 | public long flags() { |
duke@1 | 702 | if (completer != null) complete(); |
duke@1 | 703 | return flags_field; |
duke@1 | 704 | } |
duke@1 | 705 | |
jfranck@1464 | 706 | @Override |
jfranck@1464 | 707 | public List<Attribute.Compound> getRawAttributes() { |
duke@1 | 708 | if (completer != null) complete(); |
jjg@483 | 709 | if (package_info != null && package_info.completer != null) { |
jjg@483 | 710 | package_info.complete(); |
jfranck@1464 | 711 | mergeAttributes(); |
jjg@483 | 712 | } |
jfranck@1464 | 713 | return super.getRawAttributes(); |
jfranck@1464 | 714 | } |
jfranck@1464 | 715 | |
jfranck@1464 | 716 | private void mergeAttributes() { |
jfranck@1464 | 717 | if (annotations.isEmpty() && |
jfranck@1464 | 718 | !package_info.annotations.isEmpty()) { |
jfranck@1464 | 719 | annotations.setAttributes(package_info.annotations); |
jfranck@1313 | 720 | } |
duke@1 | 721 | } |
duke@1 | 722 | |
duke@1 | 723 | /** A package "exists" if a type or package that exists has |
duke@1 | 724 | * been seen within it. |
duke@1 | 725 | */ |
duke@1 | 726 | public boolean exists() { |
duke@1 | 727 | return (flags_field & EXISTS) != 0; |
duke@1 | 728 | } |
duke@1 | 729 | |
duke@1 | 730 | public ElementKind getKind() { |
duke@1 | 731 | return ElementKind.PACKAGE; |
duke@1 | 732 | } |
duke@1 | 733 | |
duke@1 | 734 | public Symbol getEnclosingElement() { |
duke@1 | 735 | return null; |
duke@1 | 736 | } |
duke@1 | 737 | |
duke@1 | 738 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
duke@1 | 739 | return v.visitPackage(this, p); |
duke@1 | 740 | } |
mcimadamore@121 | 741 | |
mcimadamore@121 | 742 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
mcimadamore@121 | 743 | return v.visitPackageSymbol(this, p); |
mcimadamore@121 | 744 | } |
duke@1 | 745 | } |
duke@1 | 746 | |
duke@1 | 747 | /** A class for class symbols |
duke@1 | 748 | */ |
duke@1 | 749 | public static class ClassSymbol extends TypeSymbol implements TypeElement { |
duke@1 | 750 | |
duke@1 | 751 | /** a scope for all class members; variables, methods and inner classes |
duke@1 | 752 | * type parameters are not part of this scope |
duke@1 | 753 | */ |
duke@1 | 754 | public Scope members_field; |
duke@1 | 755 | |
duke@1 | 756 | /** the fully qualified name of the class, i.e. pck.outer.inner. |
duke@1 | 757 | * null for anonymous classes |
duke@1 | 758 | */ |
duke@1 | 759 | public Name fullname; |
duke@1 | 760 | |
duke@1 | 761 | /** the fully qualified name of the class after converting to flat |
duke@1 | 762 | * representation, i.e. pck.outer$inner, |
duke@1 | 763 | * set externally for local and anonymous classes |
duke@1 | 764 | */ |
duke@1 | 765 | public Name flatname; |
duke@1 | 766 | |
duke@1 | 767 | /** the sourcefile where the class came from |
duke@1 | 768 | */ |
duke@1 | 769 | public JavaFileObject sourcefile; |
duke@1 | 770 | |
duke@1 | 771 | /** the classfile from where to load this class |
duke@1 | 772 | * this will have extension .class or .java |
duke@1 | 773 | */ |
duke@1 | 774 | public JavaFileObject classfile; |
duke@1 | 775 | |
mcimadamore@1086 | 776 | /** the list of translated local classes (used for generating |
mcimadamore@1086 | 777 | * InnerClasses attribute) |
mcimadamore@1086 | 778 | */ |
mcimadamore@1086 | 779 | public List<ClassSymbol> trans_local; |
mcimadamore@1086 | 780 | |
duke@1 | 781 | /** the constant pool of the class |
duke@1 | 782 | */ |
duke@1 | 783 | public Pool pool; |
duke@1 | 784 | |
duke@1 | 785 | public ClassSymbol(long flags, Name name, Type type, Symbol owner) { |
duke@1 | 786 | super(flags, name, type, owner); |
duke@1 | 787 | this.members_field = null; |
duke@1 | 788 | this.fullname = formFullName(name, owner); |
duke@1 | 789 | this.flatname = formFlatName(name, owner); |
duke@1 | 790 | this.sourcefile = null; |
duke@1 | 791 | this.classfile = null; |
duke@1 | 792 | this.pool = null; |
duke@1 | 793 | } |
duke@1 | 794 | |
duke@1 | 795 | public ClassSymbol(long flags, Name name, Symbol owner) { |
duke@1 | 796 | this( |
duke@1 | 797 | flags, |
duke@1 | 798 | name, |
duke@1 | 799 | new ClassType(Type.noType, null, null), |
duke@1 | 800 | owner); |
duke@1 | 801 | this.type.tsym = this; |
duke@1 | 802 | } |
duke@1 | 803 | |
duke@1 | 804 | /** The Java source which this symbol represents. |
duke@1 | 805 | */ |
duke@1 | 806 | public String toString() { |
duke@1 | 807 | return className(); |
duke@1 | 808 | } |
duke@1 | 809 | |
duke@1 | 810 | public long flags() { |
duke@1 | 811 | if (completer != null) complete(); |
duke@1 | 812 | return flags_field; |
duke@1 | 813 | } |
duke@1 | 814 | |
duke@1 | 815 | public Scope members() { |
duke@1 | 816 | if (completer != null) complete(); |
duke@1 | 817 | return members_field; |
duke@1 | 818 | } |
duke@1 | 819 | |
jfranck@1464 | 820 | @Override |
jfranck@1464 | 821 | public List<Attribute.Compound> getRawAttributes() { |
duke@1 | 822 | if (completer != null) complete(); |
jfranck@1464 | 823 | return super.getRawAttributes(); |
duke@1 | 824 | } |
duke@1 | 825 | |
jjg@1521 | 826 | @Override |
jjg@1521 | 827 | public List<Attribute.TypeCompound> getRawTypeAttributes() { |
jjg@1521 | 828 | if (completer != null) complete(); |
jjg@1521 | 829 | return super.getRawTypeAttributes(); |
jjg@1521 | 830 | } |
jjg@1521 | 831 | |
duke@1 | 832 | public Type erasure(Types types) { |
duke@1 | 833 | if (erasure_field == null) |
duke@1 | 834 | erasure_field = new ClassType(types.erasure(type.getEnclosingType()), |
duke@1 | 835 | List.<Type>nil(), this); |
duke@1 | 836 | return erasure_field; |
duke@1 | 837 | } |
duke@1 | 838 | |
duke@1 | 839 | public String className() { |
jjg@113 | 840 | if (name.isEmpty()) |
duke@1 | 841 | return |
duke@1 | 842 | Log.getLocalizedString("anonymous.class", flatname); |
duke@1 | 843 | else |
duke@1 | 844 | return fullname.toString(); |
duke@1 | 845 | } |
duke@1 | 846 | |
duke@1 | 847 | public Name getQualifiedName() { |
duke@1 | 848 | return fullname; |
duke@1 | 849 | } |
duke@1 | 850 | |
duke@1 | 851 | public Name flatName() { |
duke@1 | 852 | return flatname; |
duke@1 | 853 | } |
duke@1 | 854 | |
duke@1 | 855 | public boolean isSubClass(Symbol base, Types types) { |
duke@1 | 856 | if (this == base) { |
duke@1 | 857 | return true; |
duke@1 | 858 | } else if ((base.flags() & INTERFACE) != 0) { |
jjg@1374 | 859 | for (Type t = type; t.hasTag(CLASS); t = types.supertype(t)) |
duke@1 | 860 | for (List<Type> is = types.interfaces(t); |
duke@1 | 861 | is.nonEmpty(); |
duke@1 | 862 | is = is.tail) |
duke@1 | 863 | if (is.head.tsym.isSubClass(base, types)) return true; |
duke@1 | 864 | } else { |
jjg@1374 | 865 | for (Type t = type; t.hasTag(CLASS); t = types.supertype(t)) |
duke@1 | 866 | if (t.tsym == base) return true; |
duke@1 | 867 | } |
duke@1 | 868 | return false; |
duke@1 | 869 | } |
duke@1 | 870 | |
duke@1 | 871 | /** Complete the elaboration of this symbol's definition. |
duke@1 | 872 | */ |
duke@1 | 873 | public void complete() throws CompletionFailure { |
duke@1 | 874 | try { |
duke@1 | 875 | super.complete(); |
duke@1 | 876 | } catch (CompletionFailure ex) { |
duke@1 | 877 | // quiet error recovery |
duke@1 | 878 | flags_field |= (PUBLIC|STATIC); |
jjg@110 | 879 | this.type = new ErrorType(this, Type.noType); |
duke@1 | 880 | throw ex; |
duke@1 | 881 | } |
duke@1 | 882 | } |
duke@1 | 883 | |
duke@1 | 884 | public List<Type> getInterfaces() { |
duke@1 | 885 | complete(); |
duke@1 | 886 | if (type instanceof ClassType) { |
duke@1 | 887 | ClassType t = (ClassType)type; |
duke@1 | 888 | if (t.interfaces_field == null) // FIXME: shouldn't be null |
duke@1 | 889 | t.interfaces_field = List.nil(); |
jjg@904 | 890 | if (t.all_interfaces_field != null) |
jjg@904 | 891 | return Type.getModelTypes(t.all_interfaces_field); |
duke@1 | 892 | return t.interfaces_field; |
duke@1 | 893 | } else { |
duke@1 | 894 | return List.nil(); |
duke@1 | 895 | } |
duke@1 | 896 | } |
duke@1 | 897 | |
duke@1 | 898 | public Type getSuperclass() { |
duke@1 | 899 | complete(); |
duke@1 | 900 | if (type instanceof ClassType) { |
duke@1 | 901 | ClassType t = (ClassType)type; |
duke@1 | 902 | if (t.supertype_field == null) // FIXME: shouldn't be null |
duke@1 | 903 | t.supertype_field = Type.noType; |
duke@1 | 904 | // An interface has no superclass; its supertype is Object. |
duke@1 | 905 | return t.isInterface() |
duke@1 | 906 | ? Type.noType |
jjg@904 | 907 | : t.supertype_field.getModelType(); |
duke@1 | 908 | } else { |
duke@1 | 909 | return Type.noType; |
duke@1 | 910 | } |
duke@1 | 911 | } |
duke@1 | 912 | |
duke@1 | 913 | public ElementKind getKind() { |
duke@1 | 914 | long flags = flags(); |
duke@1 | 915 | if ((flags & ANNOTATION) != 0) |
duke@1 | 916 | return ElementKind.ANNOTATION_TYPE; |
duke@1 | 917 | else if ((flags & INTERFACE) != 0) |
duke@1 | 918 | return ElementKind.INTERFACE; |
duke@1 | 919 | else if ((flags & ENUM) != 0) |
duke@1 | 920 | return ElementKind.ENUM; |
duke@1 | 921 | else |
duke@1 | 922 | return ElementKind.CLASS; |
duke@1 | 923 | } |
duke@1 | 924 | |
duke@1 | 925 | public NestingKind getNestingKind() { |
duke@1 | 926 | complete(); |
duke@1 | 927 | if (owner.kind == PCK) |
duke@1 | 928 | return NestingKind.TOP_LEVEL; |
duke@1 | 929 | else if (name.isEmpty()) |
duke@1 | 930 | return NestingKind.ANONYMOUS; |
duke@1 | 931 | else if (owner.kind == MTH) |
duke@1 | 932 | return NestingKind.LOCAL; |
duke@1 | 933 | else |
duke@1 | 934 | return NestingKind.MEMBER; |
duke@1 | 935 | } |
duke@1 | 936 | |
duke@1 | 937 | /** |
duke@1 | 938 | * @deprecated this method should never be used by javac internally. |
duke@1 | 939 | */ |
duke@1 | 940 | @Override @Deprecated |
duke@1 | 941 | public <A extends java.lang.annotation.Annotation> A getAnnotation(Class<A> annoType) { |
duke@1 | 942 | return JavacElements.getAnnotation(this, annoType); |
duke@1 | 943 | } |
duke@1 | 944 | |
duke@1 | 945 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
duke@1 | 946 | return v.visitType(this, p); |
duke@1 | 947 | } |
mcimadamore@121 | 948 | |
mcimadamore@121 | 949 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
mcimadamore@121 | 950 | return v.visitClassSymbol(this, p); |
mcimadamore@121 | 951 | } |
duke@1 | 952 | } |
duke@1 | 953 | |
duke@1 | 954 | |
duke@1 | 955 | /** A class for variable symbols |
duke@1 | 956 | */ |
duke@1 | 957 | public static class VarSymbol extends Symbol implements VariableElement { |
duke@1 | 958 | |
duke@1 | 959 | /** The variable's declaration position. |
duke@1 | 960 | */ |
duke@1 | 961 | public int pos = Position.NOPOS; |
duke@1 | 962 | |
duke@1 | 963 | /** The variable's address. Used for different purposes during |
duke@1 | 964 | * flow analysis, translation and code generation. |
duke@1 | 965 | * Flow analysis: |
duke@1 | 966 | * If this is a blank final or local variable, its sequence number. |
duke@1 | 967 | * Translation: |
duke@1 | 968 | * If this is a private field, its access number. |
duke@1 | 969 | * Code generation: |
duke@1 | 970 | * If this is a local variable, its logical slot number. |
duke@1 | 971 | */ |
duke@1 | 972 | public int adr = -1; |
duke@1 | 973 | |
duke@1 | 974 | /** Construct a variable symbol, given its flags, name, type and owner. |
duke@1 | 975 | */ |
duke@1 | 976 | public VarSymbol(long flags, Name name, Type type, Symbol owner) { |
duke@1 | 977 | super(VAR, flags, name, type, owner); |
duke@1 | 978 | } |
duke@1 | 979 | |
duke@1 | 980 | /** Clone this symbol with new owner. |
duke@1 | 981 | */ |
duke@1 | 982 | public VarSymbol clone(Symbol newOwner) { |
mcimadamore@1352 | 983 | VarSymbol v = new VarSymbol(flags_field, name, type, newOwner) { |
mcimadamore@1352 | 984 | @Override |
mcimadamore@1352 | 985 | public Symbol baseSymbol() { |
mcimadamore@1352 | 986 | return VarSymbol.this; |
mcimadamore@1352 | 987 | } |
mcimadamore@1352 | 988 | }; |
duke@1 | 989 | v.pos = pos; |
duke@1 | 990 | v.adr = adr; |
duke@1 | 991 | v.data = data; |
duke@1 | 992 | // System.out.println("clone " + v + " in " + newOwner);//DEBUG |
duke@1 | 993 | return v; |
duke@1 | 994 | } |
duke@1 | 995 | |
duke@1 | 996 | public String toString() { |
duke@1 | 997 | return name.toString(); |
duke@1 | 998 | } |
duke@1 | 999 | |
duke@1 | 1000 | public Symbol asMemberOf(Type site, Types types) { |
duke@1 | 1001 | return new VarSymbol(flags_field, name, types.memberType(site, this), owner); |
duke@1 | 1002 | } |
duke@1 | 1003 | |
duke@1 | 1004 | public ElementKind getKind() { |
duke@1 | 1005 | long flags = flags(); |
duke@1 | 1006 | if ((flags & PARAMETER) != 0) { |
duke@1 | 1007 | if (isExceptionParameter()) |
duke@1 | 1008 | return ElementKind.EXCEPTION_PARAMETER; |
duke@1 | 1009 | else |
duke@1 | 1010 | return ElementKind.PARAMETER; |
duke@1 | 1011 | } else if ((flags & ENUM) != 0) { |
duke@1 | 1012 | return ElementKind.ENUM_CONSTANT; |
duke@1 | 1013 | } else if (owner.kind == TYP || owner.kind == ERR) { |
duke@1 | 1014 | return ElementKind.FIELD; |
sundar@697 | 1015 | } else if (isResourceVariable()) { |
sundar@697 | 1016 | return ElementKind.RESOURCE_VARIABLE; |
duke@1 | 1017 | } else { |
duke@1 | 1018 | return ElementKind.LOCAL_VARIABLE; |
duke@1 | 1019 | } |
duke@1 | 1020 | } |
duke@1 | 1021 | |
duke@1 | 1022 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
duke@1 | 1023 | return v.visitVariable(this, p); |
duke@1 | 1024 | } |
duke@1 | 1025 | |
duke@1 | 1026 | public Object getConstantValue() { // Mirror API |
duke@1 | 1027 | return Constants.decode(getConstValue(), type); |
duke@1 | 1028 | } |
duke@1 | 1029 | |
duke@1 | 1030 | public void setLazyConstValue(final Env<AttrContext> env, |
duke@1 | 1031 | final Attr attr, |
duke@1 | 1032 | final JCTree.JCExpression initializer) |
duke@1 | 1033 | { |
duke@1 | 1034 | setData(new Callable<Object>() { |
duke@1 | 1035 | public Object call() { |
jjg@841 | 1036 | return attr.attribLazyConstantValue(env, initializer, type); |
duke@1 | 1037 | } |
duke@1 | 1038 | }); |
duke@1 | 1039 | } |
duke@1 | 1040 | |
duke@1 | 1041 | /** |
duke@1 | 1042 | * The variable's constant value, if this is a constant. |
duke@1 | 1043 | * Before the constant value is evaluated, it points to an |
duke@1 | 1044 | * initalizer environment. If this is not a constant, it can |
duke@1 | 1045 | * be used for other stuff. |
duke@1 | 1046 | */ |
duke@1 | 1047 | private Object data; |
duke@1 | 1048 | |
duke@1 | 1049 | public boolean isExceptionParameter() { |
duke@1 | 1050 | return data == ElementKind.EXCEPTION_PARAMETER; |
duke@1 | 1051 | } |
duke@1 | 1052 | |
darcy@609 | 1053 | public boolean isResourceVariable() { |
darcy@609 | 1054 | return data == ElementKind.RESOURCE_VARIABLE; |
darcy@609 | 1055 | } |
darcy@609 | 1056 | |
duke@1 | 1057 | public Object getConstValue() { |
duke@1 | 1058 | // TODO: Consider if getConstValue and getConstantValue can be collapsed |
darcy@609 | 1059 | if (data == ElementKind.EXCEPTION_PARAMETER || |
darcy@609 | 1060 | data == ElementKind.RESOURCE_VARIABLE) { |
duke@1 | 1061 | return null; |
duke@1 | 1062 | } else if (data instanceof Callable<?>) { |
darcy@609 | 1063 | // In this case, this is a final variable, with an as |
duke@1 | 1064 | // yet unevaluated initializer. |
duke@1 | 1065 | Callable<?> eval = (Callable<?>)data; |
duke@1 | 1066 | data = null; // to make sure we don't evaluate this twice. |
duke@1 | 1067 | try { |
duke@1 | 1068 | data = eval.call(); |
duke@1 | 1069 | } catch (Exception ex) { |
duke@1 | 1070 | throw new AssertionError(ex); |
duke@1 | 1071 | } |
duke@1 | 1072 | } |
duke@1 | 1073 | return data; |
duke@1 | 1074 | } |
duke@1 | 1075 | |
duke@1 | 1076 | public void setData(Object data) { |
jjg@816 | 1077 | Assert.check(!(data instanceof Env<?>), this); |
duke@1 | 1078 | this.data = data; |
duke@1 | 1079 | } |
mcimadamore@121 | 1080 | |
mcimadamore@121 | 1081 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
mcimadamore@121 | 1082 | return v.visitVarSymbol(this, p); |
mcimadamore@121 | 1083 | } |
duke@1 | 1084 | } |
duke@1 | 1085 | |
duke@1 | 1086 | /** A class for method symbols. |
duke@1 | 1087 | */ |
duke@1 | 1088 | public static class MethodSymbol extends Symbol implements ExecutableElement { |
duke@1 | 1089 | |
duke@1 | 1090 | /** The code of the method. */ |
duke@1 | 1091 | public Code code = null; |
duke@1 | 1092 | |
mcimadamore@1565 | 1093 | /** The extra (synthetic/mandated) parameters of the method. */ |
mcimadamore@1565 | 1094 | public List<VarSymbol> extraParams = List.nil(); |
mcimadamore@1565 | 1095 | |
duke@1 | 1096 | /** The parameters of the method. */ |
duke@1 | 1097 | public List<VarSymbol> params = null; |
duke@1 | 1098 | |
duke@1 | 1099 | /** The names of the parameters */ |
duke@1 | 1100 | public List<Name> savedParameterNames; |
duke@1 | 1101 | |
duke@1 | 1102 | /** For an attribute field accessor, its default value if any. |
duke@1 | 1103 | * The value is null if none appeared in the method |
duke@1 | 1104 | * declaration. |
duke@1 | 1105 | */ |
duke@1 | 1106 | public Attribute defaultValue = null; |
duke@1 | 1107 | |
duke@1 | 1108 | /** Construct a method symbol, given its flags, name, type and owner. |
duke@1 | 1109 | */ |
duke@1 | 1110 | public MethodSymbol(long flags, Name name, Type type, Symbol owner) { |
duke@1 | 1111 | super(MTH, flags, name, type, owner); |
jjg@1374 | 1112 | if (owner.type.hasTag(TYPEVAR)) Assert.error(owner + "." + name); |
duke@1 | 1113 | } |
duke@1 | 1114 | |
duke@1 | 1115 | /** Clone this symbol with new owner. |
duke@1 | 1116 | */ |
duke@1 | 1117 | public MethodSymbol clone(Symbol newOwner) { |
mcimadamore@1352 | 1118 | MethodSymbol m = new MethodSymbol(flags_field, name, type, newOwner) { |
mcimadamore@1352 | 1119 | @Override |
mcimadamore@1352 | 1120 | public Symbol baseSymbol() { |
mcimadamore@1352 | 1121 | return MethodSymbol.this; |
mcimadamore@1352 | 1122 | } |
mcimadamore@1352 | 1123 | }; |
duke@1 | 1124 | m.code = code; |
duke@1 | 1125 | return m; |
duke@1 | 1126 | } |
duke@1 | 1127 | |
duke@1 | 1128 | /** The Java source which this symbol represents. |
duke@1 | 1129 | */ |
duke@1 | 1130 | public String toString() { |
duke@1 | 1131 | if ((flags() & BLOCK) != 0) { |
duke@1 | 1132 | return owner.name.toString(); |
duke@1 | 1133 | } else { |
jjg@113 | 1134 | String s = (name == name.table.names.init) |
duke@1 | 1135 | ? owner.name.toString() |
duke@1 | 1136 | : name.toString(); |
duke@1 | 1137 | if (type != null) { |
jjg@1374 | 1138 | if (type.hasTag(FORALL)) |
duke@1 | 1139 | s = "<" + ((ForAll)type).getTypeArguments() + ">" + s; |
duke@1 | 1140 | s += "(" + type.argtypes((flags() & VARARGS) != 0) + ")"; |
duke@1 | 1141 | } |
duke@1 | 1142 | return s; |
duke@1 | 1143 | } |
duke@1 | 1144 | } |
duke@1 | 1145 | |
mcimadamore@1336 | 1146 | public boolean isDynamic() { |
mcimadamore@1336 | 1147 | return false; |
mcimadamore@1336 | 1148 | } |
mcimadamore@1336 | 1149 | |
duke@1 | 1150 | /** find a symbol that this (proxy method) symbol implements. |
duke@1 | 1151 | * @param c The class whose members are searched for |
duke@1 | 1152 | * implementations |
duke@1 | 1153 | */ |
duke@1 | 1154 | public Symbol implemented(TypeSymbol c, Types types) { |
duke@1 | 1155 | Symbol impl = null; |
duke@1 | 1156 | for (List<Type> is = types.interfaces(c.type); |
duke@1 | 1157 | impl == null && is.nonEmpty(); |
duke@1 | 1158 | is = is.tail) { |
duke@1 | 1159 | TypeSymbol i = is.head.tsym; |
mcimadamore@780 | 1160 | impl = implementedIn(i, types); |
mcimadamore@780 | 1161 | if (impl == null) |
mcimadamore@780 | 1162 | impl = implemented(i, types); |
mcimadamore@780 | 1163 | } |
mcimadamore@780 | 1164 | return impl; |
mcimadamore@780 | 1165 | } |
mcimadamore@780 | 1166 | |
mcimadamore@780 | 1167 | public Symbol implementedIn(TypeSymbol c, Types types) { |
mcimadamore@780 | 1168 | Symbol impl = null; |
mcimadamore@780 | 1169 | for (Scope.Entry e = c.members().lookup(name); |
mcimadamore@780 | 1170 | impl == null && e.scope != null; |
mcimadamore@780 | 1171 | e = e.next()) { |
mcimadamore@780 | 1172 | if (this.overrides(e.sym, (TypeSymbol)owner, types, true) && |
mcimadamore@780 | 1173 | // FIXME: I suspect the following requires a |
mcimadamore@780 | 1174 | // subst() for a parametric return type. |
mcimadamore@780 | 1175 | types.isSameType(type.getReturnType(), |
mcimadamore@780 | 1176 | types.memberType(owner.type, e.sym).getReturnType())) { |
mcimadamore@780 | 1177 | impl = e.sym; |
duke@1 | 1178 | } |
duke@1 | 1179 | } |
duke@1 | 1180 | return impl; |
duke@1 | 1181 | } |
duke@1 | 1182 | |
duke@1 | 1183 | /** Will the erasure of this method be considered by the VM to |
duke@1 | 1184 | * override the erasure of the other when seen from class `origin'? |
duke@1 | 1185 | */ |
duke@1 | 1186 | public boolean binaryOverrides(Symbol _other, TypeSymbol origin, Types types) { |
duke@1 | 1187 | if (isConstructor() || _other.kind != MTH) return false; |
duke@1 | 1188 | |
duke@1 | 1189 | if (this == _other) return true; |
duke@1 | 1190 | MethodSymbol other = (MethodSymbol)_other; |
duke@1 | 1191 | |
duke@1 | 1192 | // check for a direct implementation |
duke@1 | 1193 | if (other.isOverridableIn((TypeSymbol)owner) && |
duke@1 | 1194 | types.asSuper(owner.type, other.owner) != null && |
duke@1 | 1195 | types.isSameType(erasure(types), other.erasure(types))) |
duke@1 | 1196 | return true; |
duke@1 | 1197 | |
duke@1 | 1198 | // check for an inherited implementation |
duke@1 | 1199 | return |
duke@1 | 1200 | (flags() & ABSTRACT) == 0 && |
duke@1 | 1201 | other.isOverridableIn(origin) && |
duke@1 | 1202 | this.isMemberOf(origin, types) && |
duke@1 | 1203 | types.isSameType(erasure(types), other.erasure(types)); |
duke@1 | 1204 | } |
duke@1 | 1205 | |
duke@1 | 1206 | /** The implementation of this (abstract) symbol in class origin, |
duke@1 | 1207 | * from the VM's point of view, null if method does not have an |
duke@1 | 1208 | * implementation in class. |
duke@1 | 1209 | * @param origin The class of which the implementation is a member. |
duke@1 | 1210 | */ |
duke@1 | 1211 | public MethodSymbol binaryImplementation(ClassSymbol origin, Types types) { |
duke@1 | 1212 | for (TypeSymbol c = origin; c != null; c = types.supertype(c.type).tsym) { |
duke@1 | 1213 | for (Scope.Entry e = c.members().lookup(name); |
duke@1 | 1214 | e.scope != null; |
duke@1 | 1215 | e = e.next()) { |
duke@1 | 1216 | if (e.sym.kind == MTH && |
duke@1 | 1217 | ((MethodSymbol)e.sym).binaryOverrides(this, origin, types)) |
duke@1 | 1218 | return (MethodSymbol)e.sym; |
duke@1 | 1219 | } |
duke@1 | 1220 | } |
duke@1 | 1221 | return null; |
duke@1 | 1222 | } |
duke@1 | 1223 | |
duke@1 | 1224 | /** Does this symbol override `other' symbol, when both are seen as |
duke@1 | 1225 | * members of class `origin'? It is assumed that _other is a member |
duke@1 | 1226 | * of origin. |
duke@1 | 1227 | * |
duke@1 | 1228 | * It is assumed that both symbols have the same name. The static |
duke@1 | 1229 | * modifier is ignored for this test. |
duke@1 | 1230 | * |
duke@1 | 1231 | * See JLS 8.4.6.1 (without transitivity) and 8.4.6.4 |
duke@1 | 1232 | */ |
duke@1 | 1233 | public boolean overrides(Symbol _other, TypeSymbol origin, Types types, boolean checkResult) { |
duke@1 | 1234 | if (isConstructor() || _other.kind != MTH) return false; |
duke@1 | 1235 | |
duke@1 | 1236 | if (this == _other) return true; |
duke@1 | 1237 | MethodSymbol other = (MethodSymbol)_other; |
duke@1 | 1238 | |
duke@1 | 1239 | // check for a direct implementation |
duke@1 | 1240 | if (other.isOverridableIn((TypeSymbol)owner) && |
duke@1 | 1241 | types.asSuper(owner.type, other.owner) != null) { |
duke@1 | 1242 | Type mt = types.memberType(owner.type, this); |
duke@1 | 1243 | Type ot = types.memberType(owner.type, other); |
duke@1 | 1244 | if (types.isSubSignature(mt, ot)) { |
duke@1 | 1245 | if (!checkResult) |
duke@1 | 1246 | return true; |
duke@1 | 1247 | if (types.returnTypeSubstitutable(mt, ot)) |
duke@1 | 1248 | return true; |
duke@1 | 1249 | } |
duke@1 | 1250 | } |
duke@1 | 1251 | |
duke@1 | 1252 | // check for an inherited implementation |
duke@1 | 1253 | if ((flags() & ABSTRACT) != 0 || |
mcimadamore@1415 | 1254 | ((other.flags() & ABSTRACT) == 0 && (other.flags() & DEFAULT) == 0) || |
mcimadamore@1393 | 1255 | !other.isOverridableIn(origin) || |
mcimadamore@1393 | 1256 | !this.isMemberOf(origin, types)) |
duke@1 | 1257 | return false; |
duke@1 | 1258 | |
duke@1 | 1259 | // assert types.asSuper(origin.type, other.owner) != null; |
duke@1 | 1260 | Type mt = types.memberType(origin.type, this); |
duke@1 | 1261 | Type ot = types.memberType(origin.type, other); |
duke@1 | 1262 | return |
duke@1 | 1263 | types.isSubSignature(mt, ot) && |
mcimadamore@1415 | 1264 | (!checkResult || types.resultSubtype(mt, ot, types.noWarnings)); |
duke@1 | 1265 | } |
duke@1 | 1266 | |
duke@1 | 1267 | private boolean isOverridableIn(TypeSymbol origin) { |
jjh@972 | 1268 | // JLS 8.4.6.1 |
duke@1 | 1269 | switch ((int)(flags_field & Flags.AccessFlags)) { |
duke@1 | 1270 | case Flags.PRIVATE: |
duke@1 | 1271 | return false; |
duke@1 | 1272 | case Flags.PUBLIC: |
mcimadamore@1513 | 1273 | return !this.owner.isInterface() || |
mcimadamore@1513 | 1274 | (flags_field & STATIC) == 0; |
duke@1 | 1275 | case Flags.PROTECTED: |
duke@1 | 1276 | return (origin.flags() & INTERFACE) == 0; |
duke@1 | 1277 | case 0: |
duke@1 | 1278 | // for package private: can only override in the same |
duke@1 | 1279 | // package |
duke@1 | 1280 | return |
duke@1 | 1281 | this.packge() == origin.packge() && |
duke@1 | 1282 | (origin.flags() & INTERFACE) == 0; |
duke@1 | 1283 | default: |
duke@1 | 1284 | return false; |
duke@1 | 1285 | } |
duke@1 | 1286 | } |
duke@1 | 1287 | |
mcimadamore@1513 | 1288 | @Override |
mcimadamore@1513 | 1289 | public boolean isInheritedIn(Symbol clazz, Types types) { |
mcimadamore@1513 | 1290 | switch ((int)(flags_field & Flags.AccessFlags)) { |
mcimadamore@1513 | 1291 | case PUBLIC: |
mcimadamore@1513 | 1292 | return !this.owner.isInterface() || |
mcimadamore@1513 | 1293 | clazz == owner || |
mcimadamore@1513 | 1294 | (flags_field & STATIC) == 0; |
mcimadamore@1513 | 1295 | default: |
mcimadamore@1513 | 1296 | return super.isInheritedIn(clazz, types); |
mcimadamore@1513 | 1297 | } |
mcimadamore@1513 | 1298 | } |
mcimadamore@1513 | 1299 | |
duke@1 | 1300 | /** The implementation of this (abstract) symbol in class origin; |
duke@1 | 1301 | * null if none exists. Synthetic methods are not considered |
duke@1 | 1302 | * as possible implementations. |
duke@1 | 1303 | */ |
duke@1 | 1304 | public MethodSymbol implementation(TypeSymbol origin, Types types, boolean checkResult) { |
mcimadamore@673 | 1305 | return implementation(origin, types, checkResult, implementation_filter); |
mcimadamore@673 | 1306 | } |
mcimadamore@673 | 1307 | // where |
mcimadamore@673 | 1308 | private static final Filter<Symbol> implementation_filter = new Filter<Symbol>() { |
mcimadamore@673 | 1309 | public boolean accepts(Symbol s) { |
mcimadamore@673 | 1310 | return s.kind == Kinds.MTH && |
mcimadamore@673 | 1311 | (s.flags() & SYNTHETIC) == 0; |
mcimadamore@673 | 1312 | } |
mcimadamore@673 | 1313 | }; |
mcimadamore@673 | 1314 | |
mcimadamore@673 | 1315 | public MethodSymbol implementation(TypeSymbol origin, Types types, boolean checkResult, Filter<Symbol> implFilter) { |
mcimadamore@858 | 1316 | MethodSymbol res = types.implementation(this, origin, checkResult, implFilter); |
mcimadamore@341 | 1317 | if (res != null) |
mcimadamore@341 | 1318 | return res; |
duke@1 | 1319 | // if origin is derived from a raw type, we might have missed |
duke@1 | 1320 | // an implementation because we do not know enough about instantiations. |
duke@1 | 1321 | // in this case continue with the supertype as origin. |
mcimadamore@1222 | 1322 | if (types.isDerivedRaw(origin.type) && !origin.isInterface()) |
duke@1 | 1323 | return implementation(types.supertype(origin.type).tsym, types, checkResult); |
duke@1 | 1324 | else |
duke@1 | 1325 | return null; |
duke@1 | 1326 | } |
duke@1 | 1327 | |
duke@1 | 1328 | public List<VarSymbol> params() { |
duke@1 | 1329 | owner.complete(); |
duke@1 | 1330 | if (params == null) { |
jjg@428 | 1331 | // If ClassReader.saveParameterNames has been set true, then |
jjg@428 | 1332 | // savedParameterNames will be set to a list of names that |
jjg@428 | 1333 | // matches the types in type.getParameterTypes(). If any names |
jjg@428 | 1334 | // were not found in the class file, those names in the list will |
jjg@428 | 1335 | // be set to the empty name. |
jjg@428 | 1336 | // If ClassReader.saveParameterNames has been set false, then |
jjg@428 | 1337 | // savedParameterNames will be null. |
jjg@428 | 1338 | List<Name> paramNames = savedParameterNames; |
duke@1 | 1339 | savedParameterNames = null; |
jjg@428 | 1340 | // discard the provided names if the list of names is the wrong size. |
jjg@1473 | 1341 | if (paramNames == null || paramNames.size() != type.getParameterTypes().size()) { |
jjg@428 | 1342 | paramNames = List.nil(); |
jjg@1473 | 1343 | } |
duke@1 | 1344 | ListBuffer<VarSymbol> buf = new ListBuffer<VarSymbol>(); |
jjg@428 | 1345 | List<Name> remaining = paramNames; |
jjg@428 | 1346 | // assert: remaining and paramNames are both empty or both |
jjg@428 | 1347 | // have same cardinality as type.getParameterTypes() |
jjg@428 | 1348 | int i = 0; |
duke@1 | 1349 | for (Type t : type.getParameterTypes()) { |
jjg@428 | 1350 | Name paramName; |
jjg@428 | 1351 | if (remaining.isEmpty()) { |
jjg@428 | 1352 | // no names for any parameters available |
jjg@428 | 1353 | paramName = createArgName(i, paramNames); |
jjg@428 | 1354 | } else { |
jjg@428 | 1355 | paramName = remaining.head; |
jjg@428 | 1356 | remaining = remaining.tail; |
jjg@428 | 1357 | if (paramName.isEmpty()) { |
jjg@428 | 1358 | // no name for this specific parameter |
jjg@428 | 1359 | paramName = createArgName(i, paramNames); |
jjg@428 | 1360 | } |
jjg@428 | 1361 | } |
jjg@428 | 1362 | buf.append(new VarSymbol(PARAMETER, paramName, t, this)); |
jjg@428 | 1363 | i++; |
duke@1 | 1364 | } |
duke@1 | 1365 | params = buf.toList(); |
duke@1 | 1366 | } |
duke@1 | 1367 | return params; |
duke@1 | 1368 | } |
duke@1 | 1369 | |
jjg@428 | 1370 | // Create a name for the argument at position 'index' that is not in |
jjg@428 | 1371 | // the exclude list. In normal use, either no names will have been |
jjg@428 | 1372 | // provided, in which case the exclude list is empty, or all the names |
jjg@428 | 1373 | // will have been provided, in which case this method will not be called. |
jjg@428 | 1374 | private Name createArgName(int index, List<Name> exclude) { |
jjg@428 | 1375 | String prefix = "arg"; |
jjg@428 | 1376 | while (true) { |
jjg@428 | 1377 | Name argName = name.table.fromString(prefix + index); |
jjg@428 | 1378 | if (!exclude.contains(argName)) |
jjg@428 | 1379 | return argName; |
jjg@428 | 1380 | prefix += "$"; |
jjg@428 | 1381 | } |
jjg@428 | 1382 | } |
jjg@428 | 1383 | |
duke@1 | 1384 | public Symbol asMemberOf(Type site, Types types) { |
duke@1 | 1385 | return new MethodSymbol(flags_field, name, types.memberType(site, this), owner); |
duke@1 | 1386 | } |
duke@1 | 1387 | |
duke@1 | 1388 | public ElementKind getKind() { |
jjg@113 | 1389 | if (name == name.table.names.init) |
duke@1 | 1390 | return ElementKind.CONSTRUCTOR; |
jjg@113 | 1391 | else if (name == name.table.names.clinit) |
duke@1 | 1392 | return ElementKind.STATIC_INIT; |
mcimadamore@1085 | 1393 | else if ((flags() & BLOCK) != 0) |
mcimadamore@1085 | 1394 | return isStatic() ? ElementKind.STATIC_INIT : ElementKind.INSTANCE_INIT; |
duke@1 | 1395 | else |
duke@1 | 1396 | return ElementKind.METHOD; |
duke@1 | 1397 | } |
duke@1 | 1398 | |
mcimadamore@1085 | 1399 | public boolean isStaticOrInstanceInit() { |
mcimadamore@1085 | 1400 | return getKind() == ElementKind.STATIC_INIT || |
mcimadamore@1085 | 1401 | getKind() == ElementKind.INSTANCE_INIT; |
mcimadamore@1085 | 1402 | } |
mcimadamore@1085 | 1403 | |
mcimadamore@1239 | 1404 | /** |
mcimadamore@1239 | 1405 | * A polymorphic signature method (JLS SE 7, 8.4.1) is a method that |
mcimadamore@1239 | 1406 | * (i) is declared in the java.lang.invoke.MethodHandle class, (ii) takes |
mcimadamore@1239 | 1407 | * a single variable arity parameter (iii) whose declared type is Object[], |
mcimadamore@1239 | 1408 | * (iv) has a return type of Object and (v) is native. |
mcimadamore@1239 | 1409 | */ |
mcimadamore@1239 | 1410 | public boolean isSignaturePolymorphic(Types types) { |
mcimadamore@1239 | 1411 | List<Type> argtypes = type.getParameterTypes(); |
mcimadamore@1239 | 1412 | Type firstElemType = argtypes.nonEmpty() ? |
mcimadamore@1239 | 1413 | types.elemtype(argtypes.head) : |
mcimadamore@1239 | 1414 | null; |
mcimadamore@1239 | 1415 | return owner == types.syms.methodHandleType.tsym && |
mcimadamore@1239 | 1416 | argtypes.length() == 1 && |
mcimadamore@1239 | 1417 | firstElemType != null && |
mcimadamore@1239 | 1418 | types.isSameType(firstElemType, types.syms.objectType) && |
mcimadamore@1239 | 1419 | types.isSameType(type.getReturnType(), types.syms.objectType) && |
mcimadamore@1239 | 1420 | (flags() & NATIVE) != 0; |
mcimadamore@1239 | 1421 | } |
mcimadamore@1239 | 1422 | |
duke@1 | 1423 | public Attribute getDefaultValue() { |
duke@1 | 1424 | return defaultValue; |
duke@1 | 1425 | } |
duke@1 | 1426 | |
jjg@1521 | 1427 | public List<VarSymbol> getParameters() { |
duke@1 | 1428 | return params(); |
duke@1 | 1429 | } |
duke@1 | 1430 | |
duke@1 | 1431 | public boolean isVarArgs() { |
duke@1 | 1432 | return (flags() & VARARGS) != 0; |
duke@1 | 1433 | } |
duke@1 | 1434 | |
darcy@1459 | 1435 | public boolean isDefault() { |
darcy@1459 | 1436 | return (flags() & DEFAULT) != 0; |
darcy@1459 | 1437 | } |
darcy@1459 | 1438 | |
duke@1 | 1439 | public <R, P> R accept(ElementVisitor<R, P> v, P p) { |
duke@1 | 1440 | return v.visitExecutable(this, p); |
duke@1 | 1441 | } |
duke@1 | 1442 | |
mcimadamore@121 | 1443 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
mcimadamore@121 | 1444 | return v.visitMethodSymbol(this, p); |
mcimadamore@121 | 1445 | } |
mcimadamore@121 | 1446 | |
duke@1 | 1447 | public Type getReturnType() { |
duke@1 | 1448 | return asType().getReturnType(); |
duke@1 | 1449 | } |
duke@1 | 1450 | |
duke@1 | 1451 | public List<Type> getThrownTypes() { |
duke@1 | 1452 | return asType().getThrownTypes(); |
duke@1 | 1453 | } |
duke@1 | 1454 | } |
duke@1 | 1455 | |
mcimadamore@1336 | 1456 | /** A class for invokedynamic method calls. |
mcimadamore@1336 | 1457 | */ |
mcimadamore@1336 | 1458 | public static class DynamicMethodSymbol extends MethodSymbol { |
mcimadamore@1336 | 1459 | |
mcimadamore@1336 | 1460 | public Object[] staticArgs; |
mcimadamore@1336 | 1461 | public Symbol bsm; |
mcimadamore@1336 | 1462 | public int bsmKind; |
mcimadamore@1336 | 1463 | |
mcimadamore@1336 | 1464 | public DynamicMethodSymbol(Name name, Symbol owner, int bsmKind, MethodSymbol bsm, Type type, Object[] staticArgs) { |
mcimadamore@1336 | 1465 | super(0, name, type, owner); |
mcimadamore@1336 | 1466 | this.bsm = bsm; |
mcimadamore@1336 | 1467 | this.bsmKind = bsmKind; |
mcimadamore@1336 | 1468 | this.staticArgs = staticArgs; |
mcimadamore@1336 | 1469 | } |
mcimadamore@1336 | 1470 | |
mcimadamore@1336 | 1471 | @Override |
mcimadamore@1336 | 1472 | public boolean isDynamic() { |
mcimadamore@1336 | 1473 | return true; |
mcimadamore@1336 | 1474 | } |
mcimadamore@1336 | 1475 | } |
mcimadamore@1336 | 1476 | |
duke@1 | 1477 | /** A class for predefined operators. |
duke@1 | 1478 | */ |
duke@1 | 1479 | public static class OperatorSymbol extends MethodSymbol { |
duke@1 | 1480 | |
duke@1 | 1481 | public int opcode; |
duke@1 | 1482 | |
duke@1 | 1483 | public OperatorSymbol(Name name, Type type, int opcode, Symbol owner) { |
duke@1 | 1484 | super(PUBLIC | STATIC, name, type, owner); |
duke@1 | 1485 | this.opcode = opcode; |
duke@1 | 1486 | } |
mcimadamore@121 | 1487 | |
mcimadamore@121 | 1488 | public <R, P> R accept(Symbol.Visitor<R, P> v, P p) { |
mcimadamore@121 | 1489 | return v.visitOperatorSymbol(this, p); |
mcimadamore@121 | 1490 | } |
duke@1 | 1491 | } |
duke@1 | 1492 | |
duke@1 | 1493 | /** Symbol completer interface. |
duke@1 | 1494 | */ |
duke@1 | 1495 | public static interface Completer { |
duke@1 | 1496 | void complete(Symbol sym) throws CompletionFailure; |
duke@1 | 1497 | } |
duke@1 | 1498 | |
duke@1 | 1499 | public static class CompletionFailure extends RuntimeException { |
duke@1 | 1500 | private static final long serialVersionUID = 0; |
duke@1 | 1501 | public Symbol sym; |
duke@1 | 1502 | |
jjg@12 | 1503 | /** A diagnostic object describing the failure |
jjg@12 | 1504 | */ |
jjg@12 | 1505 | public JCDiagnostic diag; |
jjg@12 | 1506 | |
duke@1 | 1507 | /** A localized string describing the failure. |
jjg@12 | 1508 | * @deprecated Use {@code getDetail()} or {@code getMessage()} |
duke@1 | 1509 | */ |
jjg@12 | 1510 | @Deprecated |
duke@1 | 1511 | public String errmsg; |
duke@1 | 1512 | |
duke@1 | 1513 | public CompletionFailure(Symbol sym, String errmsg) { |
duke@1 | 1514 | this.sym = sym; |
duke@1 | 1515 | this.errmsg = errmsg; |
duke@1 | 1516 | // this.printStackTrace();//DEBUG |
duke@1 | 1517 | } |
duke@1 | 1518 | |
jjg@12 | 1519 | public CompletionFailure(Symbol sym, JCDiagnostic diag) { |
jjg@12 | 1520 | this.sym = sym; |
jjg@12 | 1521 | this.diag = diag; |
jjg@12 | 1522 | // this.printStackTrace();//DEBUG |
jjg@12 | 1523 | } |
jjg@12 | 1524 | |
jjg@12 | 1525 | public JCDiagnostic getDiagnostic() { |
jjg@12 | 1526 | return diag; |
jjg@12 | 1527 | } |
jjg@12 | 1528 | |
jjg@12 | 1529 | @Override |
duke@1 | 1530 | public String getMessage() { |
jjg@12 | 1531 | if (diag != null) |
jjg@12 | 1532 | return diag.getMessage(null); |
jjg@12 | 1533 | else |
jjg@12 | 1534 | return errmsg; |
jjg@12 | 1535 | } |
jjg@12 | 1536 | |
jjg@12 | 1537 | public Object getDetailValue() { |
jjg@12 | 1538 | return (diag != null ? diag : errmsg); |
duke@1 | 1539 | } |
duke@1 | 1540 | |
duke@1 | 1541 | @Override |
duke@1 | 1542 | public CompletionFailure initCause(Throwable cause) { |
duke@1 | 1543 | super.initCause(cause); |
duke@1 | 1544 | return this; |
duke@1 | 1545 | } |
duke@1 | 1546 | |
duke@1 | 1547 | } |
mcimadamore@121 | 1548 | |
mcimadamore@121 | 1549 | /** |
mcimadamore@121 | 1550 | * A visitor for symbols. A visitor is used to implement operations |
mcimadamore@121 | 1551 | * (or relations) on symbols. Most common operations on types are |
mcimadamore@121 | 1552 | * binary relations and this interface is designed for binary |
mcimadamore@121 | 1553 | * relations, that is, operations on the form |
mcimadamore@121 | 1554 | * Symbol × P → R. |
mcimadamore@121 | 1555 | * <!-- In plain text: Type x P -> R --> |
mcimadamore@121 | 1556 | * |
mcimadamore@121 | 1557 | * @param <R> the return type of the operation implemented by this |
mcimadamore@121 | 1558 | * visitor; use Void if no return type is needed. |
mcimadamore@121 | 1559 | * @param <P> the type of the second argument (the first being the |
mcimadamore@121 | 1560 | * symbol itself) of the operation implemented by this visitor; use |
mcimadamore@121 | 1561 | * Void if a second argument is not needed. |
mcimadamore@121 | 1562 | */ |
mcimadamore@121 | 1563 | public interface Visitor<R,P> { |
mcimadamore@121 | 1564 | R visitClassSymbol(ClassSymbol s, P arg); |
mcimadamore@121 | 1565 | R visitMethodSymbol(MethodSymbol s, P arg); |
mcimadamore@121 | 1566 | R visitPackageSymbol(PackageSymbol s, P arg); |
mcimadamore@121 | 1567 | R visitOperatorSymbol(OperatorSymbol s, P arg); |
mcimadamore@121 | 1568 | R visitVarSymbol(VarSymbol s, P arg); |
mcimadamore@121 | 1569 | R visitTypeSymbol(TypeSymbol s, P arg); |
mcimadamore@121 | 1570 | R visitSymbol(Symbol s, P arg); |
mcimadamore@121 | 1571 | } |
duke@1 | 1572 | } |