Mon, 23 Aug 2010 15:13:33 -0700
6976747: JCDiagnostic: replace "boolean mandatory" with new "Set<JCDiagnostic.Flag>"
Reviewed-by: mcimadamore
duke@1 | 1 | /* |
ohair@554 | 2 | * Copyright (c) 1999, 2009, 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 com.sun.tools.javac.util.*; |
duke@1 | 29 | import com.sun.tools.javac.code.Symbol.*; |
duke@1 | 30 | |
duke@1 | 31 | import javax.lang.model.type.*; |
duke@1 | 32 | |
duke@1 | 33 | import static com.sun.tools.javac.code.Flags.*; |
duke@1 | 34 | import static com.sun.tools.javac.code.Kinds.*; |
duke@1 | 35 | import static com.sun.tools.javac.code.BoundKind.*; |
duke@1 | 36 | import static com.sun.tools.javac.code.TypeTags.*; |
duke@1 | 37 | |
duke@1 | 38 | /** This class represents Java types. The class itself defines the behavior of |
duke@1 | 39 | * the following types: |
duke@1 | 40 | * <pre> |
duke@1 | 41 | * base types (tags: BYTE, CHAR, SHORT, INT, LONG, FLOAT, DOUBLE, BOOLEAN), |
duke@1 | 42 | * type `void' (tag: VOID), |
duke@1 | 43 | * the bottom type (tag: BOT), |
duke@1 | 44 | * the missing type (tag: NONE). |
duke@1 | 45 | * </pre> |
duke@1 | 46 | * <p>The behavior of the following types is defined in subclasses, which are |
duke@1 | 47 | * all static inner classes of this class: |
duke@1 | 48 | * <pre> |
duke@1 | 49 | * class types (tag: CLASS, class: ClassType), |
duke@1 | 50 | * array types (tag: ARRAY, class: ArrayType), |
duke@1 | 51 | * method types (tag: METHOD, class: MethodType), |
duke@1 | 52 | * package types (tag: PACKAGE, class: PackageType), |
duke@1 | 53 | * type variables (tag: TYPEVAR, class: TypeVar), |
duke@1 | 54 | * type arguments (tag: WILDCARD, class: WildcardType), |
duke@1 | 55 | * polymorphic types (tag: FORALL, class: ForAll), |
duke@1 | 56 | * the error type (tag: ERROR, class: ErrorType). |
duke@1 | 57 | * </pre> |
duke@1 | 58 | * |
jjg@581 | 59 | * <p><b>This is NOT part of any supported API. |
jjg@581 | 60 | * If you write code that depends on this, you do so at your own risk. |
duke@1 | 61 | * This code and its internal interfaces are subject to change or |
duke@1 | 62 | * deletion without notice.</b> |
duke@1 | 63 | * |
duke@1 | 64 | * @see TypeTags |
duke@1 | 65 | */ |
duke@1 | 66 | public class Type implements PrimitiveType { |
duke@1 | 67 | |
duke@1 | 68 | /** Constant type: no type at all. */ |
duke@1 | 69 | public static final JCNoType noType = new JCNoType(NONE); |
duke@1 | 70 | |
duke@1 | 71 | /** If this switch is turned on, the names of type variables |
duke@1 | 72 | * and anonymous classes are printed with hashcodes appended. |
duke@1 | 73 | */ |
duke@1 | 74 | public static boolean moreInfo = false; |
duke@1 | 75 | |
duke@1 | 76 | /** The tag of this type. |
duke@1 | 77 | * |
duke@1 | 78 | * @see TypeTags |
duke@1 | 79 | */ |
duke@1 | 80 | public int tag; |
duke@1 | 81 | |
duke@1 | 82 | /** The defining class / interface / package / type variable |
duke@1 | 83 | */ |
duke@1 | 84 | public TypeSymbol tsym; |
duke@1 | 85 | |
duke@1 | 86 | /** |
duke@1 | 87 | * The constant value of this type, null if this type does not |
duke@1 | 88 | * have a constant value attribute. Only primitive types and |
duke@1 | 89 | * strings (ClassType) can have a constant value attribute. |
duke@1 | 90 | * @return the constant value attribute of this type |
duke@1 | 91 | */ |
duke@1 | 92 | public Object constValue() { |
duke@1 | 93 | return null; |
duke@1 | 94 | } |
duke@1 | 95 | |
duke@1 | 96 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { return v.visitType(this, s); } |
duke@1 | 97 | |
duke@1 | 98 | /** Define a type given its tag and type symbol |
duke@1 | 99 | */ |
duke@1 | 100 | public Type(int tag, TypeSymbol tsym) { |
duke@1 | 101 | this.tag = tag; |
duke@1 | 102 | this.tsym = tsym; |
duke@1 | 103 | } |
duke@1 | 104 | |
duke@1 | 105 | /** An abstract class for mappings from types to types |
duke@1 | 106 | */ |
duke@1 | 107 | public static abstract class Mapping { |
duke@1 | 108 | private String name; |
duke@1 | 109 | public Mapping(String name) { |
duke@1 | 110 | this.name = name; |
duke@1 | 111 | } |
duke@1 | 112 | public abstract Type apply(Type t); |
duke@1 | 113 | public String toString() { |
duke@1 | 114 | return name; |
duke@1 | 115 | } |
duke@1 | 116 | } |
duke@1 | 117 | |
duke@1 | 118 | /** map a type function over all immediate descendants of this type |
duke@1 | 119 | */ |
duke@1 | 120 | public Type map(Mapping f) { |
duke@1 | 121 | return this; |
duke@1 | 122 | } |
duke@1 | 123 | |
duke@1 | 124 | /** map a type function over a list of types |
duke@1 | 125 | */ |
duke@1 | 126 | public static List<Type> map(List<Type> ts, Mapping f) { |
duke@1 | 127 | if (ts.nonEmpty()) { |
duke@1 | 128 | List<Type> tail1 = map(ts.tail, f); |
duke@1 | 129 | Type t = f.apply(ts.head); |
duke@1 | 130 | if (tail1 != ts.tail || t != ts.head) |
duke@1 | 131 | return tail1.prepend(t); |
duke@1 | 132 | } |
duke@1 | 133 | return ts; |
duke@1 | 134 | } |
duke@1 | 135 | |
duke@1 | 136 | /** Define a constant type, of the same kind as this type |
duke@1 | 137 | * and with given constant value |
duke@1 | 138 | */ |
duke@1 | 139 | public Type constType(Object constValue) { |
duke@1 | 140 | final Object value = constValue; |
duke@1 | 141 | assert tag <= BOOLEAN; |
duke@1 | 142 | return new Type(tag, tsym) { |
duke@1 | 143 | @Override |
duke@1 | 144 | public Object constValue() { |
duke@1 | 145 | return value; |
duke@1 | 146 | } |
duke@1 | 147 | @Override |
duke@1 | 148 | public Type baseType() { |
duke@1 | 149 | return tsym.type; |
duke@1 | 150 | } |
duke@1 | 151 | }; |
duke@1 | 152 | } |
duke@1 | 153 | |
duke@1 | 154 | /** |
duke@1 | 155 | * If this is a constant type, return its underlying type. |
duke@1 | 156 | * Otherwise, return the type itself. |
duke@1 | 157 | */ |
duke@1 | 158 | public Type baseType() { |
duke@1 | 159 | return this; |
duke@1 | 160 | } |
duke@1 | 161 | |
duke@1 | 162 | /** Return the base types of a list of types. |
duke@1 | 163 | */ |
duke@1 | 164 | public static List<Type> baseTypes(List<Type> ts) { |
duke@1 | 165 | if (ts.nonEmpty()) { |
duke@1 | 166 | Type t = ts.head.baseType(); |
duke@1 | 167 | List<Type> baseTypes = baseTypes(ts.tail); |
duke@1 | 168 | if (t != ts.head || baseTypes != ts.tail) |
duke@1 | 169 | return baseTypes.prepend(t); |
duke@1 | 170 | } |
duke@1 | 171 | return ts; |
duke@1 | 172 | } |
duke@1 | 173 | |
duke@1 | 174 | /** The Java source which this type represents. |
duke@1 | 175 | */ |
duke@1 | 176 | public String toString() { |
duke@1 | 177 | String s = (tsym == null || tsym.name == null) |
duke@1 | 178 | ? "<none>" |
duke@1 | 179 | : tsym.name.toString(); |
duke@1 | 180 | if (moreInfo && tag == TYPEVAR) s = s + hashCode(); |
duke@1 | 181 | return s; |
duke@1 | 182 | } |
duke@1 | 183 | |
duke@1 | 184 | /** |
duke@1 | 185 | * The Java source which this type list represents. A List is |
duke@1 | 186 | * represented as a comma-spearated listing of the elements in |
duke@1 | 187 | * that list. |
duke@1 | 188 | */ |
duke@1 | 189 | public static String toString(List<Type> ts) { |
duke@1 | 190 | if (ts.isEmpty()) { |
duke@1 | 191 | return ""; |
duke@1 | 192 | } else { |
duke@1 | 193 | StringBuffer buf = new StringBuffer(); |
duke@1 | 194 | buf.append(ts.head.toString()); |
duke@1 | 195 | for (List<Type> l = ts.tail; l.nonEmpty(); l = l.tail) |
duke@1 | 196 | buf.append(",").append(l.head.toString()); |
duke@1 | 197 | return buf.toString(); |
duke@1 | 198 | } |
duke@1 | 199 | } |
duke@1 | 200 | |
duke@1 | 201 | /** |
duke@1 | 202 | * The constant value of this type, converted to String |
duke@1 | 203 | */ |
duke@1 | 204 | public String stringValue() { |
duke@1 | 205 | assert constValue() != null; |
duke@1 | 206 | if (tag == BOOLEAN) |
duke@1 | 207 | return ((Integer) constValue()).intValue() == 0 ? "false" : "true"; |
duke@1 | 208 | else if (tag == CHAR) |
duke@1 | 209 | return String.valueOf((char) ((Integer) constValue()).intValue()); |
duke@1 | 210 | else |
duke@1 | 211 | return constValue().toString(); |
duke@1 | 212 | } |
duke@1 | 213 | |
duke@1 | 214 | /** |
duke@1 | 215 | * This method is analogous to isSameType, but weaker, since we |
duke@1 | 216 | * never complete classes. Where isSameType would complete a |
duke@1 | 217 | * class, equals assumes that the two types are different. |
duke@1 | 218 | */ |
duke@1 | 219 | public boolean equals(Object t) { |
duke@1 | 220 | return super.equals(t); |
duke@1 | 221 | } |
duke@1 | 222 | |
duke@1 | 223 | public int hashCode() { |
duke@1 | 224 | return super.hashCode(); |
duke@1 | 225 | } |
duke@1 | 226 | |
duke@1 | 227 | /** Is this a constant type whose value is false? |
duke@1 | 228 | */ |
duke@1 | 229 | public boolean isFalse() { |
duke@1 | 230 | return |
duke@1 | 231 | tag == BOOLEAN && |
duke@1 | 232 | constValue() != null && |
duke@1 | 233 | ((Integer)constValue()).intValue() == 0; |
duke@1 | 234 | } |
duke@1 | 235 | |
duke@1 | 236 | /** Is this a constant type whose value is true? |
duke@1 | 237 | */ |
duke@1 | 238 | public boolean isTrue() { |
duke@1 | 239 | return |
duke@1 | 240 | tag == BOOLEAN && |
duke@1 | 241 | constValue() != null && |
duke@1 | 242 | ((Integer)constValue()).intValue() != 0; |
duke@1 | 243 | } |
duke@1 | 244 | |
duke@1 | 245 | public String argtypes(boolean varargs) { |
duke@1 | 246 | List<Type> args = getParameterTypes(); |
duke@1 | 247 | if (!varargs) return args.toString(); |
duke@1 | 248 | StringBuffer buf = new StringBuffer(); |
duke@1 | 249 | while (args.tail.nonEmpty()) { |
duke@1 | 250 | buf.append(args.head); |
duke@1 | 251 | args = args.tail; |
duke@1 | 252 | buf.append(','); |
duke@1 | 253 | } |
duke@1 | 254 | if (args.head.tag == ARRAY) { |
duke@1 | 255 | buf.append(((ArrayType)args.head).elemtype); |
duke@1 | 256 | buf.append("..."); |
duke@1 | 257 | } else { |
duke@1 | 258 | buf.append(args.head); |
duke@1 | 259 | } |
duke@1 | 260 | return buf.toString(); |
duke@1 | 261 | } |
duke@1 | 262 | |
duke@1 | 263 | /** Access methods. |
duke@1 | 264 | */ |
duke@1 | 265 | public List<Type> getTypeArguments() { return List.nil(); } |
duke@1 | 266 | public Type getEnclosingType() { return null; } |
duke@1 | 267 | public List<Type> getParameterTypes() { return List.nil(); } |
duke@1 | 268 | public Type getReturnType() { return null; } |
duke@1 | 269 | public List<Type> getThrownTypes() { return List.nil(); } |
duke@1 | 270 | public Type getUpperBound() { return null; } |
duke@1 | 271 | public Type getLowerBound() { return null; } |
duke@1 | 272 | |
duke@1 | 273 | public void setThrown(List<Type> ts) { |
duke@1 | 274 | throw new AssertionError(); |
duke@1 | 275 | } |
duke@1 | 276 | |
duke@1 | 277 | /** Navigation methods, these will work for classes, type variables, |
duke@1 | 278 | * foralls, but will return null for arrays and methods. |
duke@1 | 279 | */ |
duke@1 | 280 | |
duke@1 | 281 | /** Return all parameters of this type and all its outer types in order |
duke@1 | 282 | * outer (first) to inner (last). |
duke@1 | 283 | */ |
duke@1 | 284 | public List<Type> allparams() { return List.nil(); } |
duke@1 | 285 | |
duke@1 | 286 | /** Does this type contain "error" elements? |
duke@1 | 287 | */ |
duke@1 | 288 | public boolean isErroneous() { |
duke@1 | 289 | return false; |
duke@1 | 290 | } |
duke@1 | 291 | |
duke@1 | 292 | public static boolean isErroneous(List<Type> ts) { |
duke@1 | 293 | for (List<Type> l = ts; l.nonEmpty(); l = l.tail) |
duke@1 | 294 | if (l.head.isErroneous()) return true; |
duke@1 | 295 | return false; |
duke@1 | 296 | } |
duke@1 | 297 | |
duke@1 | 298 | /** Is this type parameterized? |
duke@1 | 299 | * A class type is parameterized if it has some parameters. |
duke@1 | 300 | * An array type is parameterized if its element type is parameterized. |
duke@1 | 301 | * All other types are not parameterized. |
duke@1 | 302 | */ |
duke@1 | 303 | public boolean isParameterized() { |
duke@1 | 304 | return false; |
duke@1 | 305 | } |
duke@1 | 306 | |
duke@1 | 307 | /** Is this type a raw type? |
duke@1 | 308 | * A class type is a raw type if it misses some of its parameters. |
duke@1 | 309 | * An array type is a raw type if its element type is raw. |
duke@1 | 310 | * All other types are not raw. |
duke@1 | 311 | * Type validation will ensure that the only raw types |
duke@1 | 312 | * in a program are types that miss all their type variables. |
duke@1 | 313 | */ |
duke@1 | 314 | public boolean isRaw() { |
duke@1 | 315 | return false; |
duke@1 | 316 | } |
duke@1 | 317 | |
duke@1 | 318 | public boolean isCompound() { |
duke@1 | 319 | return tsym.completer == null |
duke@1 | 320 | // Compound types can't have a completer. Calling |
duke@1 | 321 | // flags() will complete the symbol causing the |
duke@1 | 322 | // compiler to load classes unnecessarily. This led |
duke@1 | 323 | // to regression 6180021. |
duke@1 | 324 | && (tsym.flags() & COMPOUND) != 0; |
duke@1 | 325 | } |
duke@1 | 326 | |
duke@1 | 327 | public boolean isInterface() { |
duke@1 | 328 | return (tsym.flags() & INTERFACE) != 0; |
duke@1 | 329 | } |
duke@1 | 330 | |
mcimadamore@640 | 331 | public boolean isFinal() { |
mcimadamore@640 | 332 | return (tsym.flags() & FINAL) != 0; |
mcimadamore@640 | 333 | } |
mcimadamore@640 | 334 | |
duke@1 | 335 | public boolean isPrimitive() { |
duke@1 | 336 | return tag < VOID; |
duke@1 | 337 | } |
duke@1 | 338 | |
duke@1 | 339 | /** |
duke@1 | 340 | * Does this type contain occurrences of type t? |
duke@1 | 341 | */ |
duke@1 | 342 | public boolean contains(Type t) { |
duke@1 | 343 | return t == this; |
duke@1 | 344 | } |
duke@1 | 345 | |
duke@1 | 346 | public static boolean contains(List<Type> ts, Type t) { |
duke@1 | 347 | for (List<Type> l = ts; |
duke@1 | 348 | l.tail != null /*inlined: l.nonEmpty()*/; |
duke@1 | 349 | l = l.tail) |
duke@1 | 350 | if (l.head.contains(t)) return true; |
duke@1 | 351 | return false; |
duke@1 | 352 | } |
duke@1 | 353 | |
mcimadamore@635 | 354 | /** Does this type contain an occurrence of some type in 'ts'? |
duke@1 | 355 | */ |
mcimadamore@635 | 356 | public boolean containsAny(List<Type> ts) { |
mcimadamore@635 | 357 | for (Type t : ts) |
mcimadamore@635 | 358 | if (this.contains(t)) return true; |
mcimadamore@635 | 359 | return false; |
mcimadamore@635 | 360 | } |
mcimadamore@635 | 361 | |
mcimadamore@635 | 362 | public static boolean containsAny(List<Type> ts1, List<Type> ts2) { |
mcimadamore@635 | 363 | for (Type t : ts1) |
mcimadamore@635 | 364 | if (t.containsAny(ts2)) return true; |
duke@1 | 365 | return false; |
duke@1 | 366 | } |
duke@1 | 367 | |
duke@1 | 368 | public boolean isSuperBound() { return false; } |
duke@1 | 369 | public boolean isExtendsBound() { return false; } |
duke@1 | 370 | public boolean isUnbound() { return false; } |
duke@1 | 371 | public Type withTypeVar(Type t) { return this; } |
duke@1 | 372 | |
duke@1 | 373 | /** The underlying method type of this type. |
duke@1 | 374 | */ |
duke@1 | 375 | public MethodType asMethodType() { throw new AssertionError(); } |
duke@1 | 376 | |
duke@1 | 377 | /** Complete loading all classes in this type. |
duke@1 | 378 | */ |
duke@1 | 379 | public void complete() {} |
duke@1 | 380 | |
duke@1 | 381 | public Object clone() { |
duke@1 | 382 | try { |
duke@1 | 383 | return super.clone(); |
duke@1 | 384 | } catch (CloneNotSupportedException e) { |
duke@1 | 385 | throw new AssertionError(e); |
duke@1 | 386 | } |
duke@1 | 387 | } |
duke@1 | 388 | |
duke@1 | 389 | public TypeSymbol asElement() { |
duke@1 | 390 | return tsym; |
duke@1 | 391 | } |
duke@1 | 392 | |
duke@1 | 393 | public TypeKind getKind() { |
duke@1 | 394 | switch (tag) { |
duke@1 | 395 | case BYTE: return TypeKind.BYTE; |
duke@1 | 396 | case CHAR: return TypeKind.CHAR; |
duke@1 | 397 | case SHORT: return TypeKind.SHORT; |
duke@1 | 398 | case INT: return TypeKind.INT; |
duke@1 | 399 | case LONG: return TypeKind.LONG; |
duke@1 | 400 | case FLOAT: return TypeKind.FLOAT; |
duke@1 | 401 | case DOUBLE: return TypeKind.DOUBLE; |
duke@1 | 402 | case BOOLEAN: return TypeKind.BOOLEAN; |
duke@1 | 403 | case VOID: return TypeKind.VOID; |
duke@1 | 404 | case BOT: return TypeKind.NULL; |
duke@1 | 405 | case NONE: return TypeKind.NONE; |
duke@1 | 406 | default: return TypeKind.OTHER; |
duke@1 | 407 | } |
duke@1 | 408 | } |
duke@1 | 409 | |
duke@1 | 410 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 411 | if (isPrimitive()) |
duke@1 | 412 | return v.visitPrimitive(this, p); |
duke@1 | 413 | else |
duke@1 | 414 | throw new AssertionError(); |
duke@1 | 415 | } |
duke@1 | 416 | |
duke@1 | 417 | public static class WildcardType extends Type |
duke@1 | 418 | implements javax.lang.model.type.WildcardType { |
duke@1 | 419 | |
duke@1 | 420 | public Type type; |
duke@1 | 421 | public BoundKind kind; |
duke@1 | 422 | public TypeVar bound; |
duke@1 | 423 | |
duke@1 | 424 | @Override |
duke@1 | 425 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 426 | return v.visitWildcardType(this, s); |
duke@1 | 427 | } |
duke@1 | 428 | |
duke@1 | 429 | public WildcardType(Type type, BoundKind kind, TypeSymbol tsym) { |
duke@1 | 430 | super(WILDCARD, tsym); |
duke@1 | 431 | assert(type != null); |
duke@1 | 432 | this.kind = kind; |
duke@1 | 433 | this.type = type; |
duke@1 | 434 | } |
duke@1 | 435 | public WildcardType(WildcardType t, TypeVar bound) { |
duke@1 | 436 | this(t.type, t.kind, t.tsym, bound); |
duke@1 | 437 | } |
duke@1 | 438 | |
duke@1 | 439 | public WildcardType(Type type, BoundKind kind, TypeSymbol tsym, TypeVar bound) { |
duke@1 | 440 | this(type, kind, tsym); |
duke@1 | 441 | this.bound = bound; |
duke@1 | 442 | } |
duke@1 | 443 | |
mcimadamore@635 | 444 | public boolean contains(Type t) { |
mcimadamore@635 | 445 | return kind != UNBOUND && type.contains(t); |
mcimadamore@635 | 446 | } |
mcimadamore@635 | 447 | |
duke@1 | 448 | public boolean isSuperBound() { |
duke@1 | 449 | return kind == SUPER || |
duke@1 | 450 | kind == UNBOUND; |
duke@1 | 451 | } |
duke@1 | 452 | public boolean isExtendsBound() { |
duke@1 | 453 | return kind == EXTENDS || |
duke@1 | 454 | kind == UNBOUND; |
duke@1 | 455 | } |
duke@1 | 456 | public boolean isUnbound() { |
duke@1 | 457 | return kind == UNBOUND; |
duke@1 | 458 | } |
duke@1 | 459 | |
duke@1 | 460 | public Type withTypeVar(Type t) { |
duke@1 | 461 | //-System.err.println(this+".withTypeVar("+t+");");//DEBUG |
duke@1 | 462 | if (bound == t) |
duke@1 | 463 | return this; |
duke@1 | 464 | bound = (TypeVar)t; |
duke@1 | 465 | return this; |
duke@1 | 466 | } |
duke@1 | 467 | |
duke@1 | 468 | boolean isPrintingBound = false; |
duke@1 | 469 | public String toString() { |
duke@1 | 470 | StringBuffer s = new StringBuffer(); |
duke@1 | 471 | s.append(kind.toString()); |
duke@1 | 472 | if (kind != UNBOUND) |
duke@1 | 473 | s.append(type); |
duke@1 | 474 | if (moreInfo && bound != null && !isPrintingBound) |
duke@1 | 475 | try { |
duke@1 | 476 | isPrintingBound = true; |
duke@1 | 477 | s.append("{:").append(bound.bound).append(":}"); |
duke@1 | 478 | } finally { |
duke@1 | 479 | isPrintingBound = false; |
duke@1 | 480 | } |
duke@1 | 481 | return s.toString(); |
duke@1 | 482 | } |
duke@1 | 483 | |
duke@1 | 484 | public Type map(Mapping f) { |
duke@1 | 485 | //- System.err.println(" (" + this + ").map(" + f + ")");//DEBUG |
duke@1 | 486 | Type t = type; |
duke@1 | 487 | if (t != null) |
duke@1 | 488 | t = f.apply(t); |
duke@1 | 489 | if (t == type) |
duke@1 | 490 | return this; |
duke@1 | 491 | else |
duke@1 | 492 | return new WildcardType(t, kind, tsym, bound); |
duke@1 | 493 | } |
duke@1 | 494 | |
duke@1 | 495 | public Type getExtendsBound() { |
duke@1 | 496 | if (kind == EXTENDS) |
duke@1 | 497 | return type; |
duke@1 | 498 | else |
duke@1 | 499 | return null; |
duke@1 | 500 | } |
duke@1 | 501 | |
duke@1 | 502 | public Type getSuperBound() { |
duke@1 | 503 | if (kind == SUPER) |
duke@1 | 504 | return type; |
duke@1 | 505 | else |
duke@1 | 506 | return null; |
duke@1 | 507 | } |
duke@1 | 508 | |
duke@1 | 509 | public TypeKind getKind() { |
duke@1 | 510 | return TypeKind.WILDCARD; |
duke@1 | 511 | } |
duke@1 | 512 | |
duke@1 | 513 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 514 | return v.visitWildcard(this, p); |
duke@1 | 515 | } |
duke@1 | 516 | } |
duke@1 | 517 | |
duke@1 | 518 | public static class ClassType extends Type implements DeclaredType { |
duke@1 | 519 | |
duke@1 | 520 | /** The enclosing type of this type. If this is the type of an inner |
duke@1 | 521 | * class, outer_field refers to the type of its enclosing |
duke@1 | 522 | * instance class, in all other cases it referes to noType. |
duke@1 | 523 | */ |
duke@1 | 524 | private Type outer_field; |
duke@1 | 525 | |
duke@1 | 526 | /** The type parameters of this type (to be set once class is loaded). |
duke@1 | 527 | */ |
duke@1 | 528 | public List<Type> typarams_field; |
duke@1 | 529 | |
duke@1 | 530 | /** A cache variable for the type parameters of this type, |
duke@1 | 531 | * appended to all parameters of its enclosing class. |
duke@1 | 532 | * @see #allparams |
duke@1 | 533 | */ |
duke@1 | 534 | public List<Type> allparams_field; |
duke@1 | 535 | |
duke@1 | 536 | /** The supertype of this class (to be set once class is loaded). |
duke@1 | 537 | */ |
duke@1 | 538 | public Type supertype_field; |
duke@1 | 539 | |
duke@1 | 540 | /** The interfaces of this class (to be set once class is loaded). |
duke@1 | 541 | */ |
duke@1 | 542 | public List<Type> interfaces_field; |
duke@1 | 543 | |
duke@1 | 544 | public ClassType(Type outer, List<Type> typarams, TypeSymbol tsym) { |
duke@1 | 545 | super(CLASS, tsym); |
duke@1 | 546 | this.outer_field = outer; |
duke@1 | 547 | this.typarams_field = typarams; |
duke@1 | 548 | this.allparams_field = null; |
duke@1 | 549 | this.supertype_field = null; |
duke@1 | 550 | this.interfaces_field = null; |
duke@1 | 551 | /* |
duke@1 | 552 | // this can happen during error recovery |
duke@1 | 553 | assert |
duke@1 | 554 | outer.isParameterized() ? |
duke@1 | 555 | typarams.length() == tsym.type.typarams().length() : |
duke@1 | 556 | outer.isRaw() ? |
duke@1 | 557 | typarams.length() == 0 : |
duke@1 | 558 | true; |
duke@1 | 559 | */ |
duke@1 | 560 | } |
duke@1 | 561 | |
duke@1 | 562 | @Override |
duke@1 | 563 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 564 | return v.visitClassType(this, s); |
duke@1 | 565 | } |
duke@1 | 566 | |
duke@1 | 567 | public Type constType(Object constValue) { |
duke@1 | 568 | final Object value = constValue; |
duke@1 | 569 | return new ClassType(getEnclosingType(), typarams_field, tsym) { |
duke@1 | 570 | @Override |
duke@1 | 571 | public Object constValue() { |
duke@1 | 572 | return value; |
duke@1 | 573 | } |
duke@1 | 574 | @Override |
duke@1 | 575 | public Type baseType() { |
duke@1 | 576 | return tsym.type; |
duke@1 | 577 | } |
duke@1 | 578 | }; |
duke@1 | 579 | } |
duke@1 | 580 | |
duke@1 | 581 | /** The Java source which this type represents. |
duke@1 | 582 | */ |
duke@1 | 583 | public String toString() { |
duke@1 | 584 | StringBuffer buf = new StringBuffer(); |
duke@1 | 585 | if (getEnclosingType().tag == CLASS && tsym.owner.kind == TYP) { |
duke@1 | 586 | buf.append(getEnclosingType().toString()); |
duke@1 | 587 | buf.append("."); |
duke@1 | 588 | buf.append(className(tsym, false)); |
duke@1 | 589 | } else { |
duke@1 | 590 | buf.append(className(tsym, true)); |
duke@1 | 591 | } |
duke@1 | 592 | if (getTypeArguments().nonEmpty()) { |
duke@1 | 593 | buf.append('<'); |
duke@1 | 594 | buf.append(getTypeArguments().toString()); |
duke@1 | 595 | buf.append(">"); |
duke@1 | 596 | } |
duke@1 | 597 | return buf.toString(); |
duke@1 | 598 | } |
duke@1 | 599 | //where |
duke@1 | 600 | private String className(Symbol sym, boolean longform) { |
jjg@113 | 601 | if (sym.name.isEmpty() && (sym.flags() & COMPOUND) != 0) { |
duke@1 | 602 | StringBuffer s = new StringBuffer(supertype_field.toString()); |
duke@1 | 603 | for (List<Type> is=interfaces_field; is.nonEmpty(); is = is.tail) { |
duke@1 | 604 | s.append("&"); |
duke@1 | 605 | s.append(is.head.toString()); |
duke@1 | 606 | } |
duke@1 | 607 | return s.toString(); |
jjg@113 | 608 | } else if (sym.name.isEmpty()) { |
duke@1 | 609 | String s; |
duke@1 | 610 | ClassType norm = (ClassType) tsym.type; |
duke@1 | 611 | if (norm == null) { |
duke@1 | 612 | s = Log.getLocalizedString("anonymous.class", (Object)null); |
duke@1 | 613 | } else if (norm.interfaces_field != null && norm.interfaces_field.nonEmpty()) { |
duke@1 | 614 | s = Log.getLocalizedString("anonymous.class", |
duke@1 | 615 | norm.interfaces_field.head); |
duke@1 | 616 | } else { |
duke@1 | 617 | s = Log.getLocalizedString("anonymous.class", |
duke@1 | 618 | norm.supertype_field); |
duke@1 | 619 | } |
duke@1 | 620 | if (moreInfo) |
duke@1 | 621 | s += String.valueOf(sym.hashCode()); |
duke@1 | 622 | return s; |
duke@1 | 623 | } else if (longform) { |
duke@1 | 624 | return sym.getQualifiedName().toString(); |
duke@1 | 625 | } else { |
duke@1 | 626 | return sym.name.toString(); |
duke@1 | 627 | } |
duke@1 | 628 | } |
duke@1 | 629 | |
duke@1 | 630 | public List<Type> getTypeArguments() { |
duke@1 | 631 | if (typarams_field == null) { |
duke@1 | 632 | complete(); |
duke@1 | 633 | if (typarams_field == null) |
duke@1 | 634 | typarams_field = List.nil(); |
duke@1 | 635 | } |
duke@1 | 636 | return typarams_field; |
duke@1 | 637 | } |
duke@1 | 638 | |
mcimadamore@30 | 639 | public boolean hasErasedSupertypes() { |
mcimadamore@30 | 640 | return isRaw(); |
mcimadamore@30 | 641 | } |
mcimadamore@30 | 642 | |
duke@1 | 643 | public Type getEnclosingType() { |
duke@1 | 644 | return outer_field; |
duke@1 | 645 | } |
duke@1 | 646 | |
duke@1 | 647 | public void setEnclosingType(Type outer) { |
duke@1 | 648 | outer_field = outer; |
duke@1 | 649 | } |
duke@1 | 650 | |
duke@1 | 651 | public List<Type> allparams() { |
duke@1 | 652 | if (allparams_field == null) { |
duke@1 | 653 | allparams_field = getTypeArguments().prependList(getEnclosingType().allparams()); |
duke@1 | 654 | } |
duke@1 | 655 | return allparams_field; |
duke@1 | 656 | } |
duke@1 | 657 | |
duke@1 | 658 | public boolean isErroneous() { |
duke@1 | 659 | return |
duke@1 | 660 | getEnclosingType().isErroneous() || |
duke@1 | 661 | isErroneous(getTypeArguments()) || |
duke@1 | 662 | this != tsym.type && tsym.type.isErroneous(); |
duke@1 | 663 | } |
duke@1 | 664 | |
duke@1 | 665 | public boolean isParameterized() { |
duke@1 | 666 | return allparams().tail != null; |
duke@1 | 667 | // optimization, was: allparams().nonEmpty(); |
duke@1 | 668 | } |
duke@1 | 669 | |
duke@1 | 670 | /** A cache for the rank. */ |
duke@1 | 671 | int rank_field = -1; |
duke@1 | 672 | |
duke@1 | 673 | /** A class type is raw if it misses some |
duke@1 | 674 | * of its type parameter sections. |
duke@1 | 675 | * After validation, this is equivalent to: |
duke@1 | 676 | * allparams.isEmpty() && tsym.type.allparams.nonEmpty(); |
duke@1 | 677 | */ |
duke@1 | 678 | public boolean isRaw() { |
duke@1 | 679 | return |
duke@1 | 680 | this != tsym.type && // necessary, but not sufficient condition |
duke@1 | 681 | tsym.type.allparams().nonEmpty() && |
duke@1 | 682 | allparams().isEmpty(); |
duke@1 | 683 | } |
duke@1 | 684 | |
duke@1 | 685 | public Type map(Mapping f) { |
duke@1 | 686 | Type outer = getEnclosingType(); |
duke@1 | 687 | Type outer1 = f.apply(outer); |
duke@1 | 688 | List<Type> typarams = getTypeArguments(); |
duke@1 | 689 | List<Type> typarams1 = map(typarams, f); |
duke@1 | 690 | if (outer1 == outer && typarams1 == typarams) return this; |
duke@1 | 691 | else return new ClassType(outer1, typarams1, tsym); |
duke@1 | 692 | } |
duke@1 | 693 | |
duke@1 | 694 | public boolean contains(Type elem) { |
duke@1 | 695 | return |
duke@1 | 696 | elem == this |
duke@1 | 697 | || (isParameterized() |
mcimadamore@635 | 698 | && (getEnclosingType().contains(elem) || contains(getTypeArguments(), elem))) |
mcimadamore@635 | 699 | || (isCompound() |
mcimadamore@635 | 700 | && (supertype_field.contains(elem) || contains(interfaces_field, elem))); |
duke@1 | 701 | } |
duke@1 | 702 | |
duke@1 | 703 | public void complete() { |
duke@1 | 704 | if (tsym.completer != null) tsym.complete(); |
duke@1 | 705 | } |
duke@1 | 706 | |
duke@1 | 707 | public TypeKind getKind() { |
duke@1 | 708 | return TypeKind.DECLARED; |
duke@1 | 709 | } |
duke@1 | 710 | |
duke@1 | 711 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 712 | return v.visitDeclared(this, p); |
duke@1 | 713 | } |
duke@1 | 714 | } |
duke@1 | 715 | |
mcimadamore@30 | 716 | public static class ErasedClassType extends ClassType { |
mcimadamore@30 | 717 | public ErasedClassType(Type outer, TypeSymbol tsym) { |
mcimadamore@30 | 718 | super(outer, List.<Type>nil(), tsym); |
mcimadamore@30 | 719 | } |
mcimadamore@30 | 720 | |
mcimadamore@30 | 721 | @Override |
mcimadamore@30 | 722 | public boolean hasErasedSupertypes() { |
mcimadamore@30 | 723 | return true; |
mcimadamore@30 | 724 | } |
mcimadamore@30 | 725 | } |
mcimadamore@30 | 726 | |
duke@1 | 727 | public static class ArrayType extends Type |
duke@1 | 728 | implements javax.lang.model.type.ArrayType { |
duke@1 | 729 | |
duke@1 | 730 | public Type elemtype; |
duke@1 | 731 | |
duke@1 | 732 | public ArrayType(Type elemtype, TypeSymbol arrayClass) { |
duke@1 | 733 | super(ARRAY, arrayClass); |
duke@1 | 734 | this.elemtype = elemtype; |
duke@1 | 735 | } |
duke@1 | 736 | |
duke@1 | 737 | @Override |
duke@1 | 738 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 739 | return v.visitArrayType(this, s); |
duke@1 | 740 | } |
duke@1 | 741 | |
duke@1 | 742 | public String toString() { |
duke@1 | 743 | return elemtype + "[]"; |
duke@1 | 744 | } |
duke@1 | 745 | |
duke@1 | 746 | public boolean equals(Object obj) { |
duke@1 | 747 | return |
duke@1 | 748 | this == obj || |
duke@1 | 749 | (obj instanceof ArrayType && |
duke@1 | 750 | this.elemtype.equals(((ArrayType)obj).elemtype)); |
duke@1 | 751 | } |
duke@1 | 752 | |
duke@1 | 753 | public int hashCode() { |
duke@1 | 754 | return (ARRAY << 5) + elemtype.hashCode(); |
duke@1 | 755 | } |
duke@1 | 756 | |
duke@1 | 757 | public List<Type> allparams() { return elemtype.allparams(); } |
duke@1 | 758 | |
duke@1 | 759 | public boolean isErroneous() { |
duke@1 | 760 | return elemtype.isErroneous(); |
duke@1 | 761 | } |
duke@1 | 762 | |
duke@1 | 763 | public boolean isParameterized() { |
duke@1 | 764 | return elemtype.isParameterized(); |
duke@1 | 765 | } |
duke@1 | 766 | |
duke@1 | 767 | public boolean isRaw() { |
duke@1 | 768 | return elemtype.isRaw(); |
duke@1 | 769 | } |
duke@1 | 770 | |
duke@1 | 771 | public Type map(Mapping f) { |
duke@1 | 772 | Type elemtype1 = f.apply(elemtype); |
duke@1 | 773 | if (elemtype1 == elemtype) return this; |
duke@1 | 774 | else return new ArrayType(elemtype1, tsym); |
duke@1 | 775 | } |
duke@1 | 776 | |
duke@1 | 777 | public boolean contains(Type elem) { |
duke@1 | 778 | return elem == this || elemtype.contains(elem); |
duke@1 | 779 | } |
duke@1 | 780 | |
duke@1 | 781 | public void complete() { |
duke@1 | 782 | elemtype.complete(); |
duke@1 | 783 | } |
duke@1 | 784 | |
duke@1 | 785 | public Type getComponentType() { |
duke@1 | 786 | return elemtype; |
duke@1 | 787 | } |
duke@1 | 788 | |
duke@1 | 789 | public TypeKind getKind() { |
duke@1 | 790 | return TypeKind.ARRAY; |
duke@1 | 791 | } |
duke@1 | 792 | |
duke@1 | 793 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 794 | return v.visitArray(this, p); |
duke@1 | 795 | } |
duke@1 | 796 | } |
duke@1 | 797 | |
duke@1 | 798 | public static class MethodType extends Type |
duke@1 | 799 | implements Cloneable, ExecutableType { |
duke@1 | 800 | |
duke@1 | 801 | public List<Type> argtypes; |
duke@1 | 802 | public Type restype; |
duke@1 | 803 | public List<Type> thrown; |
duke@1 | 804 | |
duke@1 | 805 | public MethodType(List<Type> argtypes, |
duke@1 | 806 | Type restype, |
duke@1 | 807 | List<Type> thrown, |
duke@1 | 808 | TypeSymbol methodClass) { |
duke@1 | 809 | super(METHOD, methodClass); |
duke@1 | 810 | this.argtypes = argtypes; |
duke@1 | 811 | this.restype = restype; |
duke@1 | 812 | this.thrown = thrown; |
duke@1 | 813 | } |
duke@1 | 814 | |
duke@1 | 815 | @Override |
duke@1 | 816 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 817 | return v.visitMethodType(this, s); |
duke@1 | 818 | } |
duke@1 | 819 | |
duke@1 | 820 | /** The Java source which this type represents. |
duke@1 | 821 | * |
duke@1 | 822 | * XXX 06/09/99 iris This isn't correct Java syntax, but it probably |
duke@1 | 823 | * should be. |
duke@1 | 824 | */ |
duke@1 | 825 | public String toString() { |
duke@1 | 826 | return "(" + argtypes + ")" + restype; |
duke@1 | 827 | } |
duke@1 | 828 | |
duke@1 | 829 | public boolean equals(Object obj) { |
duke@1 | 830 | if (this == obj) |
duke@1 | 831 | return true; |
duke@1 | 832 | if (!(obj instanceof MethodType)) |
duke@1 | 833 | return false; |
duke@1 | 834 | MethodType m = (MethodType)obj; |
duke@1 | 835 | List<Type> args1 = argtypes; |
duke@1 | 836 | List<Type> args2 = m.argtypes; |
duke@1 | 837 | while (!args1.isEmpty() && !args2.isEmpty()) { |
duke@1 | 838 | if (!args1.head.equals(args2.head)) |
duke@1 | 839 | return false; |
duke@1 | 840 | args1 = args1.tail; |
duke@1 | 841 | args2 = args2.tail; |
duke@1 | 842 | } |
duke@1 | 843 | if (!args1.isEmpty() || !args2.isEmpty()) |
duke@1 | 844 | return false; |
duke@1 | 845 | return restype.equals(m.restype); |
duke@1 | 846 | } |
duke@1 | 847 | |
duke@1 | 848 | public int hashCode() { |
duke@1 | 849 | int h = METHOD; |
duke@1 | 850 | for (List<Type> thisargs = this.argtypes; |
duke@1 | 851 | thisargs.tail != null; /*inlined: thisargs.nonEmpty()*/ |
duke@1 | 852 | thisargs = thisargs.tail) |
duke@1 | 853 | h = (h << 5) + thisargs.head.hashCode(); |
duke@1 | 854 | return (h << 5) + this.restype.hashCode(); |
duke@1 | 855 | } |
duke@1 | 856 | |
duke@1 | 857 | public List<Type> getParameterTypes() { return argtypes; } |
duke@1 | 858 | public Type getReturnType() { return restype; } |
duke@1 | 859 | public List<Type> getThrownTypes() { return thrown; } |
duke@1 | 860 | |
duke@1 | 861 | public void setThrown(List<Type> t) { |
duke@1 | 862 | thrown = t; |
duke@1 | 863 | } |
duke@1 | 864 | |
duke@1 | 865 | public boolean isErroneous() { |
duke@1 | 866 | return |
duke@1 | 867 | isErroneous(argtypes) || |
duke@1 | 868 | restype != null && restype.isErroneous(); |
duke@1 | 869 | } |
duke@1 | 870 | |
duke@1 | 871 | public Type map(Mapping f) { |
duke@1 | 872 | List<Type> argtypes1 = map(argtypes, f); |
duke@1 | 873 | Type restype1 = f.apply(restype); |
duke@1 | 874 | List<Type> thrown1 = map(thrown, f); |
duke@1 | 875 | if (argtypes1 == argtypes && |
duke@1 | 876 | restype1 == restype && |
duke@1 | 877 | thrown1 == thrown) return this; |
duke@1 | 878 | else return new MethodType(argtypes1, restype1, thrown1, tsym); |
duke@1 | 879 | } |
duke@1 | 880 | |
duke@1 | 881 | public boolean contains(Type elem) { |
duke@1 | 882 | return elem == this || contains(argtypes, elem) || restype.contains(elem); |
duke@1 | 883 | } |
duke@1 | 884 | |
duke@1 | 885 | public MethodType asMethodType() { return this; } |
duke@1 | 886 | |
duke@1 | 887 | public void complete() { |
duke@1 | 888 | for (List<Type> l = argtypes; l.nonEmpty(); l = l.tail) |
duke@1 | 889 | l.head.complete(); |
duke@1 | 890 | restype.complete(); |
duke@1 | 891 | for (List<Type> l = thrown; l.nonEmpty(); l = l.tail) |
duke@1 | 892 | l.head.complete(); |
duke@1 | 893 | } |
duke@1 | 894 | |
duke@1 | 895 | public List<TypeVar> getTypeVariables() { |
duke@1 | 896 | return List.nil(); |
duke@1 | 897 | } |
duke@1 | 898 | |
duke@1 | 899 | public TypeSymbol asElement() { |
duke@1 | 900 | return null; |
duke@1 | 901 | } |
duke@1 | 902 | |
duke@1 | 903 | public TypeKind getKind() { |
duke@1 | 904 | return TypeKind.EXECUTABLE; |
duke@1 | 905 | } |
duke@1 | 906 | |
duke@1 | 907 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 908 | return v.visitExecutable(this, p); |
duke@1 | 909 | } |
duke@1 | 910 | } |
duke@1 | 911 | |
duke@1 | 912 | public static class PackageType extends Type implements NoType { |
duke@1 | 913 | |
duke@1 | 914 | PackageType(TypeSymbol tsym) { |
duke@1 | 915 | super(PACKAGE, tsym); |
duke@1 | 916 | } |
duke@1 | 917 | |
duke@1 | 918 | @Override |
duke@1 | 919 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 920 | return v.visitPackageType(this, s); |
duke@1 | 921 | } |
duke@1 | 922 | |
duke@1 | 923 | public String toString() { |
duke@1 | 924 | return tsym.getQualifiedName().toString(); |
duke@1 | 925 | } |
duke@1 | 926 | |
duke@1 | 927 | public TypeKind getKind() { |
duke@1 | 928 | return TypeKind.PACKAGE; |
duke@1 | 929 | } |
duke@1 | 930 | |
duke@1 | 931 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 932 | return v.visitNoType(this, p); |
duke@1 | 933 | } |
duke@1 | 934 | } |
duke@1 | 935 | |
duke@1 | 936 | public static class TypeVar extends Type implements TypeVariable { |
duke@1 | 937 | |
duke@1 | 938 | /** The bound of this type variable; set from outside. |
duke@1 | 939 | * Must be nonempty once it is set. |
duke@1 | 940 | * For a bound, `bound' is the bound type itself. |
duke@1 | 941 | * Multiple bounds are expressed as a single class type which has the |
duke@1 | 942 | * individual bounds as superclass, respectively interfaces. |
duke@1 | 943 | * The class type then has as `tsym' a compiler generated class `c', |
duke@1 | 944 | * which has a flag COMPOUND and whose owner is the type variable |
duke@1 | 945 | * itself. Furthermore, the erasure_field of the class |
duke@1 | 946 | * points to the first class or interface bound. |
duke@1 | 947 | */ |
duke@1 | 948 | public Type bound = null; |
duke@1 | 949 | public Type lower; |
duke@1 | 950 | |
duke@1 | 951 | public TypeVar(Name name, Symbol owner, Type lower) { |
duke@1 | 952 | super(TYPEVAR, null); |
duke@1 | 953 | tsym = new TypeSymbol(0, name, this, owner); |
duke@1 | 954 | this.lower = lower; |
duke@1 | 955 | } |
duke@1 | 956 | |
duke@1 | 957 | public TypeVar(TypeSymbol tsym, Type bound, Type lower) { |
duke@1 | 958 | super(TYPEVAR, tsym); |
duke@1 | 959 | this.bound = bound; |
duke@1 | 960 | this.lower = lower; |
duke@1 | 961 | } |
duke@1 | 962 | |
duke@1 | 963 | @Override |
duke@1 | 964 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 965 | return v.visitTypeVar(this, s); |
duke@1 | 966 | } |
duke@1 | 967 | |
duke@1 | 968 | public Type getUpperBound() { return bound; } |
duke@1 | 969 | |
duke@1 | 970 | int rank_field = -1; |
duke@1 | 971 | |
duke@1 | 972 | public Type getLowerBound() { |
duke@1 | 973 | return lower; |
duke@1 | 974 | } |
duke@1 | 975 | |
duke@1 | 976 | public TypeKind getKind() { |
duke@1 | 977 | return TypeKind.TYPEVAR; |
duke@1 | 978 | } |
duke@1 | 979 | |
mcimadamore@79 | 980 | public boolean isCaptured() { |
mcimadamore@79 | 981 | return false; |
mcimadamore@79 | 982 | } |
mcimadamore@79 | 983 | |
duke@1 | 984 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 985 | return v.visitTypeVariable(this, p); |
duke@1 | 986 | } |
duke@1 | 987 | } |
duke@1 | 988 | |
duke@1 | 989 | /** A captured type variable comes from wildcards which can have |
duke@1 | 990 | * both upper and lower bound. CapturedType extends TypeVar with |
duke@1 | 991 | * a lower bound. |
duke@1 | 992 | */ |
duke@1 | 993 | public static class CapturedType extends TypeVar { |
duke@1 | 994 | |
duke@1 | 995 | public Type lower; |
duke@1 | 996 | public WildcardType wildcard; |
duke@1 | 997 | |
duke@1 | 998 | public CapturedType(Name name, |
duke@1 | 999 | Symbol owner, |
duke@1 | 1000 | Type upper, |
duke@1 | 1001 | Type lower, |
duke@1 | 1002 | WildcardType wildcard) { |
duke@1 | 1003 | super(name, owner, lower); |
duke@1 | 1004 | assert lower != null; |
duke@1 | 1005 | this.bound = upper; |
duke@1 | 1006 | this.lower = lower; |
duke@1 | 1007 | this.wildcard = wildcard; |
duke@1 | 1008 | } |
duke@1 | 1009 | |
duke@1 | 1010 | @Override |
duke@1 | 1011 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 1012 | return v.visitCapturedType(this, s); |
duke@1 | 1013 | } |
duke@1 | 1014 | |
duke@1 | 1015 | public Type getLowerBound() { |
duke@1 | 1016 | return lower; |
duke@1 | 1017 | } |
duke@1 | 1018 | |
duke@1 | 1019 | @Override |
mcimadamore@79 | 1020 | public boolean isCaptured() { |
mcimadamore@79 | 1021 | return true; |
mcimadamore@79 | 1022 | } |
mcimadamore@79 | 1023 | |
mcimadamore@79 | 1024 | @Override |
duke@1 | 1025 | public String toString() { |
duke@1 | 1026 | return "capture#" |
mcimadamore@288 | 1027 | + (hashCode() & 0xFFFFFFFFL) % Printer.PRIME |
duke@1 | 1028 | + " of " |
duke@1 | 1029 | + wildcard; |
duke@1 | 1030 | } |
duke@1 | 1031 | } |
duke@1 | 1032 | |
duke@1 | 1033 | public static abstract class DelegatedType extends Type { |
duke@1 | 1034 | public Type qtype; |
duke@1 | 1035 | public DelegatedType(int tag, Type qtype) { |
duke@1 | 1036 | super(tag, qtype.tsym); |
duke@1 | 1037 | this.qtype = qtype; |
duke@1 | 1038 | } |
duke@1 | 1039 | public String toString() { return qtype.toString(); } |
duke@1 | 1040 | public List<Type> getTypeArguments() { return qtype.getTypeArguments(); } |
duke@1 | 1041 | public Type getEnclosingType() { return qtype.getEnclosingType(); } |
duke@1 | 1042 | public List<Type> getParameterTypes() { return qtype.getParameterTypes(); } |
duke@1 | 1043 | public Type getReturnType() { return qtype.getReturnType(); } |
duke@1 | 1044 | public List<Type> getThrownTypes() { return qtype.getThrownTypes(); } |
duke@1 | 1045 | public List<Type> allparams() { return qtype.allparams(); } |
duke@1 | 1046 | public Type getUpperBound() { return qtype.getUpperBound(); } |
duke@1 | 1047 | public Object clone() { DelegatedType t = (DelegatedType)super.clone(); t.qtype = (Type)qtype.clone(); return t; } |
duke@1 | 1048 | public boolean isErroneous() { return qtype.isErroneous(); } |
duke@1 | 1049 | } |
duke@1 | 1050 | |
duke@1 | 1051 | public static class ForAll extends DelegatedType |
duke@1 | 1052 | implements Cloneable, ExecutableType { |
duke@1 | 1053 | public List<Type> tvars; |
duke@1 | 1054 | |
duke@1 | 1055 | public ForAll(List<Type> tvars, Type qtype) { |
duke@1 | 1056 | super(FORALL, qtype); |
duke@1 | 1057 | this.tvars = tvars; |
duke@1 | 1058 | } |
duke@1 | 1059 | |
duke@1 | 1060 | @Override |
duke@1 | 1061 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 1062 | return v.visitForAll(this, s); |
duke@1 | 1063 | } |
duke@1 | 1064 | |
duke@1 | 1065 | public String toString() { |
duke@1 | 1066 | return "<" + tvars + ">" + qtype; |
duke@1 | 1067 | } |
duke@1 | 1068 | |
duke@1 | 1069 | public List<Type> getTypeArguments() { return tvars; } |
duke@1 | 1070 | |
duke@1 | 1071 | public void setThrown(List<Type> t) { |
duke@1 | 1072 | qtype.setThrown(t); |
duke@1 | 1073 | } |
duke@1 | 1074 | |
duke@1 | 1075 | public Object clone() { |
duke@1 | 1076 | ForAll result = (ForAll)super.clone(); |
duke@1 | 1077 | result.qtype = (Type)result.qtype.clone(); |
duke@1 | 1078 | return result; |
duke@1 | 1079 | } |
duke@1 | 1080 | |
duke@1 | 1081 | public boolean isErroneous() { |
duke@1 | 1082 | return qtype.isErroneous(); |
duke@1 | 1083 | } |
duke@1 | 1084 | |
mcimadamore@299 | 1085 | /** |
mcimadamore@299 | 1086 | * Replaces this ForAll's typevars with a set of concrete Java types |
mcimadamore@396 | 1087 | * and returns the instantiated generic type. Subclasses should override |
mcimadamore@299 | 1088 | * in order to check that the list of types is a valid instantiation |
mcimadamore@299 | 1089 | * of the ForAll's typevars. |
mcimadamore@299 | 1090 | * |
mcimadamore@299 | 1091 | * @param actuals list of actual types |
mcimadamore@299 | 1092 | * @param types types instance |
mcimadamore@299 | 1093 | * @return qtype where all occurrences of tvars are replaced |
mcimadamore@299 | 1094 | * by types in actuals |
mcimadamore@299 | 1095 | */ |
mcimadamore@299 | 1096 | public Type inst(List<Type> actuals, Types types) { |
mcimadamore@299 | 1097 | return types.subst(qtype, tvars, actuals); |
mcimadamore@299 | 1098 | } |
mcimadamore@299 | 1099 | |
mcimadamore@396 | 1100 | /** |
mcimadamore@396 | 1101 | * Kind of type-constraint derived during type inference |
mcimadamore@396 | 1102 | */ |
mcimadamore@396 | 1103 | public enum ConstraintKind { |
mcimadamore@396 | 1104 | /** |
mcimadamore@396 | 1105 | * upper bound constraint (a type variable must be instantiated |
mcimadamore@396 | 1106 | * with a type T, where T is a subtype of all the types specified by |
mcimadamore@396 | 1107 | * its EXTENDS constraints). |
mcimadamore@396 | 1108 | */ |
mcimadamore@396 | 1109 | EXTENDS, |
mcimadamore@396 | 1110 | /** |
mcimadamore@396 | 1111 | * lower bound constraint (a type variable must be instantiated |
mcimadamore@396 | 1112 | * with a type T, where T is a supertype of all the types specified by |
mcimadamore@396 | 1113 | * its SUPER constraints). |
mcimadamore@396 | 1114 | */ |
mcimadamore@396 | 1115 | SUPER, |
mcimadamore@396 | 1116 | /** |
mcimadamore@396 | 1117 | * equality constraint (a type variable must be instantiated to the type |
mcimadamore@396 | 1118 | * specified by its EQUAL constraint. |
mcimadamore@396 | 1119 | */ |
mcimadamore@396 | 1120 | EQUAL; |
mcimadamore@396 | 1121 | } |
mcimadamore@396 | 1122 | |
mcimadamore@396 | 1123 | /** |
mcimadamore@396 | 1124 | * Get the type-constraints of a given kind for a given type-variable of |
mcimadamore@396 | 1125 | * this ForAll type. Subclasses should override in order to return more |
mcimadamore@396 | 1126 | * accurate sets of constraints. |
mcimadamore@396 | 1127 | * |
mcimadamore@396 | 1128 | * @param tv the type-variable for which the constraint is to be retrieved |
mcimadamore@396 | 1129 | * @param ck the constraint kind to be retrieved |
mcimadamore@396 | 1130 | * @return the list of types specified by the selected constraint |
mcimadamore@396 | 1131 | */ |
mcimadamore@396 | 1132 | public List<Type> getConstraints(TypeVar tv, ConstraintKind ck) { |
mcimadamore@396 | 1133 | return List.nil(); |
mcimadamore@396 | 1134 | } |
mcimadamore@396 | 1135 | |
duke@1 | 1136 | public Type map(Mapping f) { |
duke@1 | 1137 | return f.apply(qtype); |
duke@1 | 1138 | } |
duke@1 | 1139 | |
duke@1 | 1140 | public boolean contains(Type elem) { |
duke@1 | 1141 | return qtype.contains(elem); |
duke@1 | 1142 | } |
duke@1 | 1143 | |
duke@1 | 1144 | public MethodType asMethodType() { |
duke@1 | 1145 | return qtype.asMethodType(); |
duke@1 | 1146 | } |
duke@1 | 1147 | |
duke@1 | 1148 | public void complete() { |
duke@1 | 1149 | for (List<Type> l = tvars; l.nonEmpty(); l = l.tail) { |
duke@1 | 1150 | ((TypeVar)l.head).bound.complete(); |
duke@1 | 1151 | } |
duke@1 | 1152 | qtype.complete(); |
duke@1 | 1153 | } |
duke@1 | 1154 | |
duke@1 | 1155 | public List<TypeVar> getTypeVariables() { |
duke@1 | 1156 | return List.convert(TypeVar.class, getTypeArguments()); |
duke@1 | 1157 | } |
duke@1 | 1158 | |
duke@1 | 1159 | public TypeKind getKind() { |
duke@1 | 1160 | return TypeKind.EXECUTABLE; |
duke@1 | 1161 | } |
duke@1 | 1162 | |
duke@1 | 1163 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 1164 | return v.visitExecutable(this, p); |
duke@1 | 1165 | } |
duke@1 | 1166 | } |
duke@1 | 1167 | |
duke@1 | 1168 | /** A class for instantiatable variables, for use during type |
duke@1 | 1169 | * inference. |
duke@1 | 1170 | */ |
duke@1 | 1171 | public static class UndetVar extends DelegatedType { |
duke@1 | 1172 | public List<Type> lobounds = List.nil(); |
duke@1 | 1173 | public List<Type> hibounds = List.nil(); |
duke@1 | 1174 | public Type inst = null; |
duke@1 | 1175 | |
duke@1 | 1176 | @Override |
duke@1 | 1177 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 1178 | return v.visitUndetVar(this, s); |
duke@1 | 1179 | } |
duke@1 | 1180 | |
duke@1 | 1181 | public UndetVar(Type origin) { |
duke@1 | 1182 | super(UNDETVAR, origin); |
duke@1 | 1183 | } |
duke@1 | 1184 | |
duke@1 | 1185 | public String toString() { |
duke@1 | 1186 | if (inst != null) return inst.toString(); |
duke@1 | 1187 | else return qtype + "?"; |
duke@1 | 1188 | } |
duke@1 | 1189 | |
duke@1 | 1190 | public Type baseType() { |
duke@1 | 1191 | if (inst != null) return inst.baseType(); |
duke@1 | 1192 | else return this; |
duke@1 | 1193 | } |
duke@1 | 1194 | } |
duke@1 | 1195 | |
duke@1 | 1196 | /** Represents VOID or NONE. |
duke@1 | 1197 | */ |
duke@1 | 1198 | static class JCNoType extends Type implements NoType { |
duke@1 | 1199 | public JCNoType(int tag) { |
duke@1 | 1200 | super(tag, null); |
duke@1 | 1201 | } |
duke@1 | 1202 | |
duke@1 | 1203 | @Override |
duke@1 | 1204 | public TypeKind getKind() { |
duke@1 | 1205 | switch (tag) { |
duke@1 | 1206 | case VOID: return TypeKind.VOID; |
duke@1 | 1207 | case NONE: return TypeKind.NONE; |
duke@1 | 1208 | default: |
duke@1 | 1209 | throw new AssertionError("Unexpected tag: " + tag); |
duke@1 | 1210 | } |
duke@1 | 1211 | } |
duke@1 | 1212 | |
duke@1 | 1213 | @Override |
duke@1 | 1214 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 1215 | return v.visitNoType(this, p); |
duke@1 | 1216 | } |
duke@1 | 1217 | } |
duke@1 | 1218 | |
duke@1 | 1219 | static class BottomType extends Type implements NullType { |
duke@1 | 1220 | public BottomType() { |
duke@1 | 1221 | super(TypeTags.BOT, null); |
duke@1 | 1222 | } |
duke@1 | 1223 | |
duke@1 | 1224 | @Override |
duke@1 | 1225 | public TypeKind getKind() { |
duke@1 | 1226 | return TypeKind.NULL; |
duke@1 | 1227 | } |
duke@1 | 1228 | |
duke@1 | 1229 | @Override |
duke@1 | 1230 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 1231 | return v.visitNull(this, p); |
duke@1 | 1232 | } |
duke@1 | 1233 | |
duke@1 | 1234 | @Override |
duke@1 | 1235 | public Type constType(Object value) { |
duke@1 | 1236 | return this; |
duke@1 | 1237 | } |
duke@1 | 1238 | |
duke@1 | 1239 | @Override |
duke@1 | 1240 | public String stringValue() { |
duke@1 | 1241 | return "null"; |
duke@1 | 1242 | } |
duke@1 | 1243 | } |
duke@1 | 1244 | |
duke@1 | 1245 | public static class ErrorType extends ClassType |
duke@1 | 1246 | implements javax.lang.model.type.ErrorType { |
duke@1 | 1247 | |
jjg@110 | 1248 | private Type originalType = null; |
jjg@110 | 1249 | |
jjg@110 | 1250 | public ErrorType(Type originalType, TypeSymbol tsym) { |
duke@1 | 1251 | super(noType, List.<Type>nil(), null); |
duke@1 | 1252 | tag = ERROR; |
jjg@110 | 1253 | this.tsym = tsym; |
jjg@110 | 1254 | this.originalType = (originalType == null ? noType : originalType); |
duke@1 | 1255 | } |
duke@1 | 1256 | |
jjg@110 | 1257 | public ErrorType(ClassSymbol c, Type originalType) { |
jjg@110 | 1258 | this(originalType, c); |
duke@1 | 1259 | c.type = this; |
duke@1 | 1260 | c.kind = ERR; |
duke@1 | 1261 | c.members_field = new Scope.ErrorScope(c); |
duke@1 | 1262 | } |
duke@1 | 1263 | |
jjg@110 | 1264 | public ErrorType(Name name, TypeSymbol container, Type originalType) { |
jjg@110 | 1265 | this(new ClassSymbol(PUBLIC|STATIC|ACYCLIC, name, null, container), originalType); |
duke@1 | 1266 | } |
duke@1 | 1267 | |
duke@1 | 1268 | @Override |
duke@1 | 1269 | public <R,S> R accept(Type.Visitor<R,S> v, S s) { |
duke@1 | 1270 | return v.visitErrorType(this, s); |
duke@1 | 1271 | } |
duke@1 | 1272 | |
duke@1 | 1273 | public Type constType(Object constValue) { return this; } |
duke@1 | 1274 | public Type getEnclosingType() { return this; } |
duke@1 | 1275 | public Type getReturnType() { return this; } |
duke@1 | 1276 | public Type asSub(Symbol sym) { return this; } |
duke@1 | 1277 | public Type map(Mapping f) { return this; } |
duke@1 | 1278 | |
duke@1 | 1279 | public boolean isGenType(Type t) { return true; } |
duke@1 | 1280 | public boolean isErroneous() { return true; } |
duke@1 | 1281 | public boolean isCompound() { return false; } |
duke@1 | 1282 | public boolean isInterface() { return false; } |
duke@1 | 1283 | |
duke@1 | 1284 | public List<Type> allparams() { return List.nil(); } |
duke@1 | 1285 | public List<Type> getTypeArguments() { return List.nil(); } |
duke@1 | 1286 | |
duke@1 | 1287 | public TypeKind getKind() { |
duke@1 | 1288 | return TypeKind.ERROR; |
duke@1 | 1289 | } |
duke@1 | 1290 | |
jjg@110 | 1291 | public Type getOriginalType() { |
jjg@110 | 1292 | return originalType; |
jjg@110 | 1293 | } |
jjg@110 | 1294 | |
duke@1 | 1295 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
duke@1 | 1296 | return v.visitError(this, p); |
duke@1 | 1297 | } |
duke@1 | 1298 | } |
duke@1 | 1299 | |
duke@1 | 1300 | /** |
duke@1 | 1301 | * A visitor for types. A visitor is used to implement operations |
duke@1 | 1302 | * (or relations) on types. Most common operations on types are |
duke@1 | 1303 | * binary relations and this interface is designed for binary |
duke@1 | 1304 | * relations, that is, operations on the form |
duke@1 | 1305 | * Type × S → R. |
duke@1 | 1306 | * <!-- In plain text: Type x S -> R --> |
duke@1 | 1307 | * |
duke@1 | 1308 | * @param <R> the return type of the operation implemented by this |
duke@1 | 1309 | * visitor; use Void if no return type is needed. |
duke@1 | 1310 | * @param <S> the type of the second argument (the first being the |
duke@1 | 1311 | * type itself) of the operation implemented by this visitor; use |
duke@1 | 1312 | * Void if a second argument is not needed. |
duke@1 | 1313 | */ |
duke@1 | 1314 | public interface Visitor<R,S> { |
duke@1 | 1315 | R visitClassType(ClassType t, S s); |
duke@1 | 1316 | R visitWildcardType(WildcardType t, S s); |
duke@1 | 1317 | R visitArrayType(ArrayType t, S s); |
duke@1 | 1318 | R visitMethodType(MethodType t, S s); |
duke@1 | 1319 | R visitPackageType(PackageType t, S s); |
duke@1 | 1320 | R visitTypeVar(TypeVar t, S s); |
duke@1 | 1321 | R visitCapturedType(CapturedType t, S s); |
duke@1 | 1322 | R visitForAll(ForAll t, S s); |
duke@1 | 1323 | R visitUndetVar(UndetVar t, S s); |
duke@1 | 1324 | R visitErrorType(ErrorType t, S s); |
duke@1 | 1325 | R visitType(Type t, S s); |
duke@1 | 1326 | } |
duke@1 | 1327 | } |