| 1 | /* |
|---|---|
| 2 | * Copyright (C) 2007-2010 Júlio Vilmar Gesser. |
| 3 | * Copyright (C) 2011, 2013-2020 The JavaParser Team. |
| 4 | * |
| 5 | * This file is part of JavaParser. |
| 6 | * |
| 7 | * JavaParser can be used either under the terms of |
| 8 | * a) the GNU Lesser General Public License as published by |
| 9 | * the Free Software Foundation, either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * b) the terms of the Apache License |
| 12 | * |
| 13 | * You should have received a copy of both licenses in LICENCE.LGPL and |
| 14 | * LICENCE.APACHE. Please refer to those files for details. |
| 15 | * |
| 16 | * JavaParser is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU Lesser General Public License for more details. |
| 20 | */ |
| 21 | |
| 22 | package com.github.javaparser.resolution.types; |
| 23 | |
| 24 | import java.util.ArrayList; |
| 25 | import java.util.Collections; |
| 26 | import java.util.LinkedList; |
| 27 | import java.util.List; |
| 28 | import java.util.Map; |
| 29 | import java.util.Optional; |
| 30 | import java.util.Set; |
| 31 | import java.util.stream.Collectors; |
| 32 | |
| 33 | import com.github.javaparser.ast.AccessSpecifier; |
| 34 | import com.github.javaparser.resolution.MethodUsage; |
| 35 | import com.github.javaparser.resolution.declarations.ResolvedFieldDeclaration; |
| 36 | import com.github.javaparser.resolution.declarations.ResolvedMethodDeclaration; |
| 37 | import com.github.javaparser.resolution.declarations.ResolvedReferenceTypeDeclaration; |
| 38 | import com.github.javaparser.resolution.declarations.ResolvedTypeParameterDeclaration; |
| 39 | import com.github.javaparser.resolution.declarations.ResolvedTypeParameterDeclaration.Bound; |
| 40 | import com.github.javaparser.resolution.types.parametrization.ResolvedTypeParameterValueProvider; |
| 41 | import com.github.javaparser.resolution.types.parametrization.ResolvedTypeParametersMap; |
| 42 | import com.github.javaparser.resolution.types.parametrization.ResolvedTypeParametrized; |
| 43 | import com.github.javaparser.utils.Pair; |
| 44 | |
| 45 | /** |
| 46 | * A ReferenceType like a class, an interface or an enum. Note that this type can contain also the values |
| 47 | * specified for the type parameters. |
| 48 | * |
| 49 | * @author Federico Tomassetti |
| 50 | */ |
| 51 | public abstract class ResolvedReferenceType implements ResolvedType, |
| 52 | ResolvedTypeParametrized, ResolvedTypeParameterValueProvider { |
| 53 | |
| 54 | // |
| 55 | // Fields |
| 56 | // |
| 57 | |
| 58 | protected ResolvedReferenceTypeDeclaration typeDeclaration; |
| 59 | protected ResolvedTypeParametersMap typeParametersMap; |
| 60 | |
| 61 | // |
| 62 | // Constructors |
| 63 | // |
| 64 | |
| 65 | public ResolvedReferenceType(ResolvedReferenceTypeDeclaration typeDeclaration) { |
| 66 | this(typeDeclaration, deriveParams(typeDeclaration)); |
| 67 | } |
| 68 | |
| 69 | public ResolvedReferenceType(ResolvedReferenceTypeDeclaration typeDeclaration, List<ResolvedType> typeArguments) { |
| 70 | if (typeDeclaration == null) { |
| 71 | throw new IllegalArgumentException("TypeDeclaration is not expected to be null"); |
| 72 | } |
| 73 | if (typeDeclaration.isTypeParameter()) { |
| 74 | throw new IllegalArgumentException("You should use only Classes, Interfaces and enums"); |
| 75 | } |
| 76 | if (typeArguments.size() > 0 && typeArguments.size() != typeDeclaration.getTypeParameters().size()) { |
| 77 | throw new IllegalArgumentException(String.format( |
| 78 | "expected either zero type arguments or has many as defined in the declaration (%d). Found %d", |
| 79 | typeDeclaration.getTypeParameters().size(), typeArguments.size())); |
| 80 | } |
| 81 | ResolvedTypeParametersMap.Builder typeParametersMapBuilder = new ResolvedTypeParametersMap.Builder(); |
| 82 | for (int i = 0; i < typeArguments.size(); i++) { |
| 83 | typeParametersMapBuilder.setValue(typeDeclaration.getTypeParameters().get(i), typeArguments.get(i)); |
| 84 | } |
| 85 | this.typeParametersMap = typeParametersMapBuilder.build(); |
| 86 | this.typeDeclaration = typeDeclaration; |
| 87 | } |
| 88 | |
| 89 | // |
| 90 | // Public Object methods |
| 91 | // |
| 92 | |
| 93 | @Override |
| 94 | public boolean equals(Object o) { |
| 95 | if (this == o) return true; |
| 96 | if (o == null || getClass() != o.getClass()) return false; |
| 97 | |
| 98 | ResolvedReferenceType that = (ResolvedReferenceType) o; |
| 99 | |
| 100 | if (!typeDeclaration.equals(that.typeDeclaration)) return false; |
| 101 | if (!typeParametersMap.equals(that.typeParametersMap)) return false; |
| 102 | |
| 103 | return true; |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public int hashCode() { |
| 108 | int result = typeDeclaration.hashCode(); |
| 109 | result = 31 * result + typeParametersMap.hashCode(); |
| 110 | return result; |
| 111 | } |
| 112 | |
| 113 | @Override |
| 114 | public String toString() { |
| 115 | return "ReferenceType{" + getQualifiedName() + |
| 116 | ", typeParametersMap=" + typeParametersMap + |
| 117 | '}'; |
| 118 | } |
| 119 | |
| 120 | /// |
| 121 | /// Relation with other types |
| 122 | /// |
| 123 | |
| 124 | @Override |
| 125 | public final boolean isReferenceType() { |
| 126 | return true; |
| 127 | } |
| 128 | |
| 129 | /// |
| 130 | /// Downcasting |
| 131 | /// |
| 132 | |
| 133 | @Override |
| 134 | public ResolvedReferenceType asReferenceType() { |
| 135 | return this; |
| 136 | } |
| 137 | |
| 138 | /// |
| 139 | /// Naming |
| 140 | /// |
| 141 | |
| 142 | @Override |
| 143 | public String describe() { |
| 144 | StringBuilder sb = new StringBuilder(); |
| 145 | if (hasName()) { |
| 146 | sb.append(typeDeclaration.getQualifiedName()); |
| 147 | } else { |
| 148 | sb.append("<anonymous class>"); |
| 149 | } |
| 150 | if (!typeParametersMap().isEmpty()) { |
| 151 | sb.append("<"); |
| 152 | sb.append(String.join(", ", typeDeclaration.getTypeParameters().stream() |
| 153 | .map(tp -> typeParametersMap().getValue(tp).describe()) |
| 154 | .collect(Collectors.toList()))); |
| 155 | sb.append(">"); |
| 156 | } |
| 157 | return sb.toString(); |
| 158 | } |
| 159 | |
| 160 | /// |
| 161 | /// TypeParameters |
| 162 | /// |
| 163 | |
| 164 | /** |
| 165 | * Execute a transformation on all the type parameters of this element. |
| 166 | */ |
| 167 | public abstract ResolvedType transformTypeParameters(ResolvedTypeTransformer transformer); |
| 168 | |
| 169 | @Override |
| 170 | public ResolvedType replaceTypeVariables(ResolvedTypeParameterDeclaration tpToReplace, ResolvedType replaced, |
| 171 | Map<ResolvedTypeParameterDeclaration, ResolvedType> inferredTypes) { |
| 172 | if (replaced == null) { |
| 173 | throw new IllegalArgumentException(); |
| 174 | } |
| 175 | |
| 176 | ResolvedReferenceType result = this; |
| 177 | int i = 0; |
| 178 | for (ResolvedType tp : this.typeParametersValues()) { |
| 179 | ResolvedType transformedTp = tp.replaceTypeVariables(tpToReplace, replaced, inferredTypes); |
| 180 | // Identity comparison on purpose |
| 181 | if (tp.isTypeVariable() && tp.asTypeVariable().describe().equals(tpToReplace.getName())) { |
| 182 | inferredTypes.put(tp.asTypeParameter(), replaced); |
| 183 | } |
| 184 | // FIXME |
| 185 | if (true) { |
| 186 | List<ResolvedType> typeParametersCorrected = result.asReferenceType().typeParametersValues(); |
| 187 | typeParametersCorrected.set(i, transformedTp); |
| 188 | result = create(typeDeclaration, typeParametersCorrected); |
| 189 | } |
| 190 | i++; |
| 191 | } |
| 192 | |
| 193 | List<ResolvedType> values = result.typeParametersValues(); |
| 194 | // FIXME |
| 195 | if (values.contains(tpToReplace)) { |
| 196 | int index = values.indexOf(tpToReplace); |
| 197 | values.set(index, replaced); |
| 198 | if(result.getTypeDeclaration().isPresent()) { |
| 199 | return create(result.getTypeDeclaration().get(), values); |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | return result; |
| 204 | } |
| 205 | |
| 206 | /// |
| 207 | /// Assignability |
| 208 | /// |
| 209 | |
| 210 | /** |
| 211 | * This method checks if ThisType t = new OtherType() would compile. |
| 212 | */ |
| 213 | @Override |
| 214 | public abstract boolean isAssignableBy(ResolvedType other); |
| 215 | |
| 216 | /// |
| 217 | /// Ancestors |
| 218 | /// |
| 219 | |
| 220 | /** |
| 221 | * Return all ancestors, that means all superclasses and interfaces. |
| 222 | * This list should always include Object (unless this is a reference to Object). |
| 223 | * The type typeParametersValues should be expressed in terms of this type typeParametersValues. |
| 224 | * <p> |
| 225 | * For example, given: |
| 226 | * <p> |
| 227 | * class Foo<A, B> {} |
| 228 | * class Bar<C> extends Foo<C, String> {} |
| 229 | * <p> |
| 230 | * a call to getAllAncestors on a reference to Bar having type parameter Boolean should include |
| 231 | * Foo<Boolean, String>. |
| 232 | */ |
| 233 | public abstract List<ResolvedReferenceType> getAllAncestors(); |
| 234 | |
| 235 | /** |
| 236 | * Return direct ancestors, that means the superclasses and interfaces implemented directly. |
| 237 | * This list should include Object if the class has no other superclass or the interface is not extending another interface. |
| 238 | * There is an exception for Object itself. |
| 239 | */ |
| 240 | public abstract List<ResolvedReferenceType> getDirectAncestors(); |
| 241 | |
| 242 | public final List<ResolvedReferenceType> getAllInterfacesAncestors() { |
| 243 | return getAllAncestors().stream() |
| 244 | .filter(it -> it.getTypeDeclaration().isPresent()) |
| 245 | .filter(it -> it.getTypeDeclaration().get().isInterface()) |
| 246 | .collect(Collectors.toList()); |
| 247 | } |
| 248 | |
| 249 | public final List<ResolvedReferenceType> getAllClassesAncestors() { |
| 250 | return getAllAncestors().stream() |
| 251 | .filter(it -> it.getTypeDeclaration().isPresent()) |
| 252 | .filter(it -> it.getTypeDeclaration().get().isClass()) |
| 253 | .collect(Collectors.toList()); |
| 254 | } |
| 255 | |
| 256 | /// |
| 257 | /// Type parameters |
| 258 | /// |
| 259 | |
| 260 | /** |
| 261 | * Get the type associated with the type parameter with the given name. |
| 262 | * It returns Optional.empty unless the type declaration declares a type parameter with the given name. |
| 263 | */ |
| 264 | public Optional<ResolvedType> getGenericParameterByName(String name) { |
| 265 | for (ResolvedTypeParameterDeclaration tp : typeDeclaration.getTypeParameters()) { |
| 266 | if (tp.getName().equals(name)) { |
| 267 | return Optional.of(this.typeParametersMap().getValue(tp)); |
| 268 | } |
| 269 | } |
| 270 | return Optional.empty(); |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Get the values for all type parameters declared on this type. |
| 275 | * The list can be empty for raw types. |
| 276 | */ |
| 277 | public List<ResolvedType> typeParametersValues() { |
| 278 | return this.typeParametersMap.isEmpty() ? Collections.emptyList() : typeDeclaration.getTypeParameters().stream().map(tp -> typeParametersMap.getValue(tp)).collect(Collectors.toList()); |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Get the values for all type parameters declared on this type. |
| 283 | * In case of raw types the values correspond to TypeVariables. |
| 284 | */ |
| 285 | public List<Pair<ResolvedTypeParameterDeclaration, ResolvedType>> getTypeParametersMap() { |
| 286 | List<Pair<ResolvedTypeParameterDeclaration, ResolvedType>> typeParametersMap = new ArrayList<>(); |
| 287 | if (!isRawType()) { |
| 288 | for (int i = 0; i < typeDeclaration.getTypeParameters().size(); i++) { |
| 289 | typeParametersMap.add(new Pair<>(typeDeclaration.getTypeParameters().get(i), typeParametersValues().get(i))); |
| 290 | } |
| 291 | } |
| 292 | return typeParametersMap; |
| 293 | } |
| 294 | |
| 295 | @Override |
| 296 | public ResolvedTypeParametersMap typeParametersMap() { |
| 297 | return typeParametersMap; |
| 298 | } |
| 299 | |
| 300 | /// |
| 301 | /// Other methods introduced by ReferenceType |
| 302 | /// |
| 303 | |
| 304 | /** |
| 305 | * Corresponding TypeDeclaration |
| 306 | */ |
| 307 | public final Optional<ResolvedReferenceTypeDeclaration> getTypeDeclaration() { |
| 308 | return Optional.of(typeDeclaration); |
| 309 | } |
| 310 | |
| 311 | /** |
| 312 | * The type of the field could be different from the one in the corresponding FieldDeclaration because |
| 313 | * type variables would be solved. |
| 314 | */ |
| 315 | public Optional<ResolvedType> getFieldType(String name) { |
| 316 | if (!typeDeclaration.hasField(name)) { |
| 317 | return Optional.empty(); |
| 318 | } |
| 319 | ResolvedType type = typeDeclaration.getField(name).getType(); |
| 320 | type = useThisTypeParametersOnTheGivenType(type); |
| 321 | return Optional.of(type); |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | * Has the TypeDeclaration a name? Anonymous classes do not have one. |
| 326 | */ |
| 327 | public boolean hasName() { |
| 328 | return typeDeclaration.hasName(); |
| 329 | } |
| 330 | |
| 331 | /** |
| 332 | * Qualified name of the declaration. |
| 333 | */ |
| 334 | public String getQualifiedName() { |
| 335 | return typeDeclaration.getQualifiedName(); |
| 336 | } |
| 337 | |
| 338 | /** |
| 339 | * Id of the declaration. It corresponds to the qualified name, unless for local classes. |
| 340 | */ |
| 341 | public String getId() { |
| 342 | return typeDeclaration.getId(); |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Methods declared on this type. |
| 347 | */ |
| 348 | public abstract Set<MethodUsage> getDeclaredMethods(); |
| 349 | |
| 350 | /** |
| 351 | * Fields declared on this type. |
| 352 | */ |
| 353 | public abstract Set<ResolvedFieldDeclaration> getDeclaredFields(); |
| 354 | |
| 355 | public boolean isRawType() { |
| 356 | if (!typeDeclaration.getTypeParameters().isEmpty()) { |
| 357 | if (typeParametersMap().isEmpty()) { |
| 358 | return true; |
| 359 | } |
| 360 | for (String name : typeParametersMap().getNames()) { |
| 361 | Optional<ResolvedType> value = typeParametersMap().getValueBySignature(name); |
| 362 | if (!value.isPresent() || !value.get().isTypeVariable() || !value.get().asTypeVariable().qualifiedName().equals(name)) { |
| 363 | return false; |
| 364 | } |
| 365 | } |
| 366 | return true; |
| 367 | } |
| 368 | return false; |
| 369 | } |
| 370 | |
| 371 | public Optional<ResolvedType> typeParamValue(ResolvedTypeParameterDeclaration typeParameterDeclaration) { |
| 372 | if (typeParameterDeclaration.declaredOnMethod()) { |
| 373 | throw new IllegalArgumentException(); |
| 374 | } |
| 375 | if(!this.getTypeDeclaration().isPresent()) { |
| 376 | return Optional.empty(); // TODO: Consider IllegalStateException or similar |
| 377 | } |
| 378 | |
| 379 | String typeId = this.getTypeDeclaration().get().getId(); |
| 380 | if (typeId.equals(typeParameterDeclaration.getContainerId())) { |
| 381 | return Optional.of(this.typeParametersMap().getValue(typeParameterDeclaration)); |
| 382 | } |
| 383 | for (ResolvedReferenceType ancestor : this.getAllAncestors()) { |
| 384 | if (ancestor.getId().equals(typeParameterDeclaration.getContainerId())) { |
| 385 | return Optional.of(ancestor.typeParametersMap().getValue(typeParameterDeclaration)); |
| 386 | } |
| 387 | } |
| 388 | return Optional.empty(); |
| 389 | } |
| 390 | |
| 391 | public abstract ResolvedType toRawType(); |
| 392 | |
| 393 | /** |
| 394 | * Get a list of all the methods available on this type. This list includes methods declared in this type and |
| 395 | * methods inherited. This list includes methods of all sort of visibility. However it does not include methods |
| 396 | * that have been overwritten. |
| 397 | */ |
| 398 | public List<ResolvedMethodDeclaration> getAllMethods() { |
| 399 | if(!this.getTypeDeclaration().isPresent()) { |
| 400 | return new ArrayList<>(); // empty list -- consider IllegalStateException or similar |
| 401 | } |
| 402 | |
| 403 | // Get the methods declared directly on this. |
| 404 | List<ResolvedMethodDeclaration> allMethods = new LinkedList<>( |
| 405 | this.getTypeDeclaration().get().getDeclaredMethods() |
| 406 | ); |
| 407 | // Also get methods inherited from ancestors. |
| 408 | getDirectAncestors().forEach(a -> allMethods.addAll(a.getAllMethods())); |
| 409 | |
| 410 | return allMethods; |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Fields which are visible to inheritors. They include all inherited fields which are visible to this |
| 415 | * type plus all declared fields which are not private. |
| 416 | */ |
| 417 | public List<ResolvedFieldDeclaration> getAllFieldsVisibleToInheritors() { |
| 418 | List<ResolvedFieldDeclaration> res = new LinkedList<>(this.getDeclaredFields().stream() |
| 419 | .filter(f -> f.accessSpecifier() != AccessSpecifier.PRIVATE) |
| 420 | .collect(Collectors.toList())); |
| 421 | |
| 422 | getDirectAncestors().forEach(a -> |
| 423 | res.addAll(a.getAllFieldsVisibleToInheritors())); |
| 424 | |
| 425 | return res; |
| 426 | } |
| 427 | |
| 428 | public List<ResolvedMethodDeclaration> getAllMethodsVisibleToInheritors() { |
| 429 | return this.getAllMethods().stream() |
| 430 | .filter(m -> m.accessSpecifier() != AccessSpecifier.PRIVATE) |
| 431 | .collect(Collectors.toList()); |
| 432 | } |
| 433 | |
| 434 | // |
| 435 | // Protected methods |
| 436 | // |
| 437 | |
| 438 | protected abstract ResolvedReferenceType create(ResolvedReferenceTypeDeclaration typeDeclaration, List<ResolvedType> typeParameters); |
| 439 | |
| 440 | protected ResolvedReferenceType create(ResolvedReferenceTypeDeclaration typeDeclaration, ResolvedTypeParametersMap typeParametersMap) { |
| 441 | return create(typeDeclaration, typeDeclaration.getTypeParameters().stream() |
| 442 | .map(typeParametersMap::getValue) |
| 443 | .collect(Collectors.toList())); |
| 444 | } |
| 445 | |
| 446 | protected abstract ResolvedReferenceType create(ResolvedReferenceTypeDeclaration typeDeclaration); |
| 447 | |
| 448 | protected boolean isCorrespondingBoxingType(String typeName) { |
| 449 | switch (typeName) { |
| 450 | case "boolean": |
| 451 | return getQualifiedName().equals(Boolean.class.getCanonicalName()); |
| 452 | case "char": |
| 453 | return getQualifiedName().equals(Character.class.getCanonicalName()); |
| 454 | case "byte": |
| 455 | return getQualifiedName().equals(Byte.class.getCanonicalName()); |
| 456 | case "short": |
| 457 | return getQualifiedName().equals(Short.class.getCanonicalName()); |
| 458 | case "int": |
| 459 | return getQualifiedName().equals(Integer.class.getCanonicalName()); |
| 460 | case "long": |
| 461 | return getQualifiedName().equals(Long.class.getCanonicalName()); |
| 462 | case "float": |
| 463 | return getQualifiedName().equals(Float.class.getCanonicalName()); |
| 464 | case "double": |
| 465 | return getQualifiedName().equals(Double.class.getCanonicalName()); |
| 466 | default: |
| 467 | throw new UnsupportedOperationException(typeName); |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | protected boolean compareConsideringTypeParameters(ResolvedReferenceType other) { |
| 472 | if (other.equals(this)) { |
| 473 | return true; |
| 474 | } |
| 475 | if (this.getQualifiedName().equals(other.getQualifiedName())) { |
| 476 | if (this.isRawType() || other.isRawType()) { |
| 477 | return true; |
| 478 | } |
| 479 | List<ResolvedType> typeParametersValues = typeParametersValues(); |
| 480 | if (typeParametersValues.size() != other.typeParametersValues().size()) { |
| 481 | throw new IllegalStateException(); |
| 482 | } |
| 483 | for (int i = 0; i < typeParametersValues.size(); i++) { |
| 484 | ResolvedType thisParam = typeParametersValues.get(i); |
| 485 | ResolvedType otherParam = other.typeParametersValues().get(i); |
| 486 | if (!thisParam.equals(otherParam)) { |
| 487 | if (thisParam instanceof ResolvedWildcard) { |
| 488 | ResolvedWildcard thisParamAsWildcard = (ResolvedWildcard) thisParam; |
| 489 | if (thisParamAsWildcard.isSuper() && otherParam.isAssignableBy(thisParamAsWildcard.getBoundedType())) { |
| 490 | // ok |
| 491 | } else if (thisParamAsWildcard.isExtends() && thisParamAsWildcard.getBoundedType().isAssignableBy(otherParam)) { |
| 492 | // ok |
| 493 | } else if (!thisParamAsWildcard.isBounded()) { |
| 494 | // ok |
| 495 | } else { |
| 496 | return false; |
| 497 | } |
| 498 | } else { |
| 499 | if (thisParam instanceof ResolvedTypeVariable && otherParam instanceof ResolvedTypeVariable) { |
| 500 | List<ResolvedType> thisBounds = thisParam.asTypeVariable().asTypeParameter().getBounds() |
| 501 | .stream().map(ResolvedTypeParameterDeclaration.Bound::getType) |
| 502 | .collect(Collectors.toList()); |
| 503 | List<ResolvedType> otherBounds = otherParam.asTypeVariable().asTypeParameter().getBounds() |
| 504 | .stream().map(ResolvedTypeParameterDeclaration.Bound::getType) |
| 505 | .collect(Collectors.toList()); |
| 506 | return thisBounds.size() == otherBounds.size() && otherBounds.containsAll(thisBounds); |
| 507 | } else if (!(thisParam instanceof ResolvedTypeVariable) && otherParam instanceof ResolvedTypeVariable) { |
| 508 | return compareConsideringVariableTypeParameters(thisParam, (ResolvedTypeVariable)otherParam); |
| 509 | } else if (thisParam instanceof ResolvedTypeVariable && !(otherParam instanceof ResolvedTypeVariable)) { |
| 510 | return compareConsideringVariableTypeParameters(otherParam, (ResolvedTypeVariable) thisParam); |
| 511 | } |
| 512 | return false; |
| 513 | } |
| 514 | } |
| 515 | } |
| 516 | return true; |
| 517 | } |
| 518 | return false; |
| 519 | } |
| 520 | |
| 521 | // |
| 522 | // Private methods |
| 523 | // |
| 524 | |
| 525 | private boolean compareConsideringVariableTypeParameters(ResolvedType referenceType, ResolvedTypeVariable typeVariable) { |
| 526 | // verify if the ResolvedTypeVariable has only one type variable and the bound is |
| 527 | // not a reference type with a bound parameter |
| 528 | // for example EnumSet<E> noneOf(Class<E> elementType) |
| 529 | List<Bound> bounds = typeVariable.asTypeVariable().asTypeParameter().getBounds(); |
| 530 | if (bounds.size() == 1) { |
| 531 | ResolvedType boundType = bounds.get(0).getType(); |
| 532 | boolean hasTypeParameter = boundType.isReferenceType() |
| 533 | && !boundType.asReferenceType().typeParametersMap.isEmpty(); |
| 534 | return hasTypeParameter |
| 535 | ? compareConsideringTypeParameters(boundType.asReferenceType()) |
| 536 | : boundType.isAssignableBy(referenceType); |
| 537 | } |
| 538 | return false; |
| 539 | } |
| 540 | |
| 541 | private static List<ResolvedType> deriveParams(ResolvedReferenceTypeDeclaration typeDeclaration) { |
| 542 | if (typeDeclaration == null) { |
| 543 | throw new IllegalArgumentException("TypeDeclaration is not expected to be null"); |
| 544 | } |
| 545 | List<ResolvedTypeParameterDeclaration> typeParameters = typeDeclaration.getTypeParameters(); |
| 546 | if (typeParameters == null) { |
| 547 | throw new RuntimeException("Type parameters are not expected to be null"); |
| 548 | } |
| 549 | return typeParameters.stream().map(ResolvedTypeVariable::new).collect(Collectors.toList()); |
| 550 | } |
| 551 | |
| 552 | public abstract ResolvedReferenceType deriveTypeParameters(ResolvedTypeParametersMap typeParametersMap); |
| 553 | |
| 554 | |
| 555 | /** |
| 556 | * We don't make this _ex_plicit in the data representation because that would affect codegen |
| 557 | * and make everything generate like {@code <T extends Object>} instead of {@code <T>} |
| 558 | * |
| 559 | * @return true, if this represents {@code java.lang.Object} |
| 560 | * @see ResolvedReferenceTypeDeclaration#isJavaLangObject() |
| 561 | * @see <a href="https://github.com/javaparser/javaparser/issues/2044">https://github.com/javaparser/javaparser/issues/2044</a> |
| 562 | */ |
| 563 | public boolean isJavaLangObject() { |
| 564 | return this.isReferenceType() |
| 565 | && hasName() // Consider anonymous classes |
| 566 | && getQualifiedName().equals(java.lang.Object.class.getCanonicalName()); |
| 567 | } |
| 568 | |
| 569 | /** |
| 570 | * @return true, if this represents {@code java.lang.Enum} |
| 571 | * @see ResolvedReferenceTypeDeclaration#isJavaLangEnum() |
| 572 | */ |
| 573 | public boolean isJavaLangEnum() { |
| 574 | return this.isReferenceType() |
| 575 | && hasName() // Consider anonymous classes |
| 576 | && getQualifiedName().equals(java.lang.Enum.class.getCanonicalName()); |
| 577 | } |
| 578 | |
| 579 | } |
| 580 |
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