TypeAnnotations.java revision 2646:ff1998c1ecab
1/* 2 * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package com.sun.tools.javac.code; 27 28import javax.lang.model.element.Element; 29import javax.lang.model.element.ElementKind; 30import javax.lang.model.type.TypeKind; 31 32import javax.tools.JavaFileObject; 33 34import com.sun.tools.javac.code.Attribute.TypeCompound; 35import com.sun.tools.javac.code.Type.ArrayType; 36import com.sun.tools.javac.code.Type.CapturedType; 37import com.sun.tools.javac.code.Type.ClassType; 38import com.sun.tools.javac.code.Type.ErrorType; 39import com.sun.tools.javac.code.Type.ForAll; 40import com.sun.tools.javac.code.Type.MethodType; 41import com.sun.tools.javac.code.Type.PackageType; 42import com.sun.tools.javac.code.Type.TypeVar; 43import com.sun.tools.javac.code.Type.UndetVar; 44import com.sun.tools.javac.code.Type.Visitor; 45import com.sun.tools.javac.code.Type.WildcardType; 46import com.sun.tools.javac.code.TypeAnnotationPosition.TypePathEntry; 47import com.sun.tools.javac.code.TypeAnnotationPosition.TypePathEntryKind; 48import com.sun.tools.javac.code.Symbol.VarSymbol; 49import com.sun.tools.javac.code.Symbol.MethodSymbol; 50import com.sun.tools.javac.comp.Annotate; 51import com.sun.tools.javac.comp.Annotate.Worker; 52import com.sun.tools.javac.comp.Attr; 53import com.sun.tools.javac.comp.AttrContext; 54import com.sun.tools.javac.comp.Env; 55import com.sun.tools.javac.tree.JCTree; 56import com.sun.tools.javac.tree.TreeInfo; 57import com.sun.tools.javac.tree.JCTree.JCBlock; 58import com.sun.tools.javac.tree.JCTree.JCClassDecl; 59import com.sun.tools.javac.tree.JCTree.JCExpression; 60import com.sun.tools.javac.tree.JCTree.JCLambda; 61import com.sun.tools.javac.tree.JCTree.JCMethodDecl; 62import com.sun.tools.javac.tree.JCTree.JCMethodInvocation; 63import com.sun.tools.javac.tree.JCTree.JCNewClass; 64import com.sun.tools.javac.tree.JCTree.JCTypeApply; 65import com.sun.tools.javac.tree.JCTree.JCVariableDecl; 66import com.sun.tools.javac.tree.TreeScanner; 67import com.sun.tools.javac.tree.JCTree.*; 68import com.sun.tools.javac.util.Assert; 69import com.sun.tools.javac.util.Context; 70import com.sun.tools.javac.util.List; 71import com.sun.tools.javac.util.ListBuffer; 72import com.sun.tools.javac.util.Log; 73import com.sun.tools.javac.util.Names; 74import com.sun.tools.javac.util.Options; 75 76/** 77 * Contains operations specific to processing type annotations. 78 * This class has two functions: 79 * separate declaration from type annotations and insert the type 80 * annotations to their types; 81 * and determine the TypeAnnotationPositions for all type annotations. 82 */ 83public class TypeAnnotations { 84 protected static final Context.Key<TypeAnnotations> typeAnnosKey = new Context.Key<>(); 85 86 public static TypeAnnotations instance(Context context) { 87 TypeAnnotations instance = context.get(typeAnnosKey); 88 if (instance == null) 89 instance = new TypeAnnotations(context); 90 return instance; 91 } 92 93 final Log log; 94 final Names names; 95 final Symtab syms; 96 final Annotate annotate; 97 final Attr attr; 98 99 protected TypeAnnotations(Context context) { 100 context.put(typeAnnosKey, this); 101 names = Names.instance(context); 102 log = Log.instance(context); 103 syms = Symtab.instance(context); 104 annotate = Annotate.instance(context); 105 attr = Attr.instance(context); 106 Options options = Options.instance(context); 107 } 108 109 /** 110 * Separate type annotations from declaration annotations and 111 * determine the correct positions for type annotations. 112 * This version only visits types in signatures and should be 113 * called from MemberEnter. 114 * The method takes the Annotate object as parameter and 115 * adds an Annotate.Worker to the correct Annotate queue for 116 * later processing. 117 */ 118 public void organizeTypeAnnotationsSignatures(final Env<AttrContext> env, final JCClassDecl tree) { 119 annotate.afterRepeated( new Worker() { 120 @Override 121 public void run() { 122 JavaFileObject oldSource = log.useSource(env.toplevel.sourcefile); 123 124 try { 125 new TypeAnnotationPositions(true).scan(tree); 126 } finally { 127 log.useSource(oldSource); 128 } 129 } 130 } ); 131 } 132 133 public void validateTypeAnnotationsSignatures(final Env<AttrContext> env, final JCClassDecl tree) { 134 annotate.validate(new Worker() { //validate annotations 135 @Override 136 public void run() { 137 JavaFileObject oldSource = log.useSource(env.toplevel.sourcefile); 138 139 try { 140 attr.validateTypeAnnotations(tree, true); 141 } finally { 142 log.useSource(oldSource); 143 } 144 } 145 } ); 146 } 147 148 /** 149 * This version only visits types in bodies, that is, field initializers, 150 * top-level blocks, and method bodies, and should be called from Attr. 151 */ 152 public void organizeTypeAnnotationsBodies(JCClassDecl tree) { 153 new TypeAnnotationPositions(false).scan(tree); 154 } 155 156 public enum AnnotationType { DECLARATION, TYPE, BOTH } 157 158 /** 159 * Determine whether an annotation is a declaration annotation, 160 * a type annotation, or both. 161 */ 162 public AnnotationType annotationType(Attribute.Compound a, Symbol s) { 163 Attribute.Compound atTarget = 164 a.type.tsym.attribute(syms.annotationTargetType.tsym); 165 if (atTarget == null) { 166 return inferTargetMetaInfo(a, s); 167 } 168 Attribute atValue = atTarget.member(names.value); 169 if (!(atValue instanceof Attribute.Array)) { 170 Assert.error("annotationType(): bad @Target argument " + atValue + 171 " (" + atValue.getClass() + ")"); 172 return AnnotationType.DECLARATION; // error recovery 173 } 174 Attribute.Array arr = (Attribute.Array) atValue; 175 boolean isDecl = false, isType = false; 176 for (Attribute app : arr.values) { 177 if (!(app instanceof Attribute.Enum)) { 178 Assert.error("annotationType(): unrecognized Attribute kind " + app + 179 " (" + app.getClass() + ")"); 180 isDecl = true; 181 continue; 182 } 183 Attribute.Enum e = (Attribute.Enum) app; 184 if (e.value.name == names.TYPE) { 185 if (s.kind == Kinds.TYP) 186 isDecl = true; 187 } else if (e.value.name == names.FIELD) { 188 if (s.kind == Kinds.VAR && 189 s.owner.kind != Kinds.MTH) 190 isDecl = true; 191 } else if (e.value.name == names.METHOD) { 192 if (s.kind == Kinds.MTH && 193 !s.isConstructor()) 194 isDecl = true; 195 } else if (e.value.name == names.PARAMETER) { 196 if (s.kind == Kinds.VAR && 197 s.owner.kind == Kinds.MTH && 198 (s.flags() & Flags.PARAMETER) != 0) 199 isDecl = true; 200 } else if (e.value.name == names.CONSTRUCTOR) { 201 if (s.kind == Kinds.MTH && 202 s.isConstructor()) 203 isDecl = true; 204 } else if (e.value.name == names.LOCAL_VARIABLE) { 205 if (s.kind == Kinds.VAR && 206 s.owner.kind == Kinds.MTH && 207 (s.flags() & Flags.PARAMETER) == 0) 208 isDecl = true; 209 } else if (e.value.name == names.ANNOTATION_TYPE) { 210 if (s.kind == Kinds.TYP && 211 (s.flags() & Flags.ANNOTATION) != 0) 212 isDecl = true; 213 } else if (e.value.name == names.PACKAGE) { 214 if (s.kind == Kinds.PCK) 215 isDecl = true; 216 } else if (e.value.name == names.TYPE_USE) { 217 if (s.kind == Kinds.TYP || 218 s.kind == Kinds.VAR || 219 (s.kind == Kinds.MTH && !s.isConstructor() && 220 !s.type.getReturnType().hasTag(TypeTag.VOID)) || 221 (s.kind == Kinds.MTH && s.isConstructor())) 222 isType = true; 223 } else if (e.value.name == names.TYPE_PARAMETER) { 224 /* Irrelevant in this case */ 225 // TYPE_PARAMETER doesn't aid in distinguishing between 226 // Type annotations and declaration annotations on an 227 // Element 228 } else { 229 Assert.error("annotationType(): unrecognized Attribute name " + e.value.name + 230 " (" + e.value.name.getClass() + ")"); 231 isDecl = true; 232 } 233 } 234 if (isDecl && isType) { 235 return AnnotationType.BOTH; 236 } else if (isType) { 237 return AnnotationType.TYPE; 238 } else { 239 return AnnotationType.DECLARATION; 240 } 241 } 242 243 /** Infer the target annotation kind, if none is give. 244 * We only infer declaration annotations. 245 */ 246 private static AnnotationType inferTargetMetaInfo(Attribute.Compound a, Symbol s) { 247 return AnnotationType.DECLARATION; 248 } 249 250 251 private class TypeAnnotationPositions extends TreeScanner { 252 253 private final boolean sigOnly; 254 255 TypeAnnotationPositions(boolean sigOnly) { 256 this.sigOnly = sigOnly; 257 } 258 259 /* 260 * When traversing the AST we keep the "frames" of visited 261 * trees in order to determine the position of annotations. 262 */ 263 private ListBuffer<JCTree> frames = new ListBuffer<>(); 264 265 protected void push(JCTree t) { frames = frames.prepend(t); } 266 protected JCTree pop() { return frames.next(); } 267 // could this be frames.elems.tail.head? 268 private JCTree peek2() { return frames.toList().tail.head; } 269 270 @Override 271 public void scan(JCTree tree) { 272 push(tree); 273 super.scan(tree); 274 pop(); 275 } 276 277 /** 278 * Separates type annotations from declaration annotations. 279 * This step is needed because in certain locations (where declaration 280 * and type annotations can be mixed, e.g. the type of a field) 281 * we never build an JCAnnotatedType. This step finds these 282 * annotations and marks them as if they were part of the type. 283 */ 284 private void separateAnnotationsKinds(JCTree typetree, Type type, Symbol sym, 285 TypeAnnotationPosition pos) { 286 List<Attribute.Compound> annotations = sym.getRawAttributes(); 287 ListBuffer<Attribute.Compound> declAnnos = new ListBuffer<>(); 288 ListBuffer<Attribute.TypeCompound> typeAnnos = new ListBuffer<>(); 289 ListBuffer<Attribute.TypeCompound> onlyTypeAnnos = new ListBuffer<>(); 290 291 for (Attribute.Compound a : annotations) { 292 switch (annotationType(a, sym)) { 293 case DECLARATION: 294 declAnnos.append(a); 295 break; 296 case BOTH: { 297 declAnnos.append(a); 298 Attribute.TypeCompound ta = toTypeCompound(a, pos); 299 typeAnnos.append(ta); 300 break; 301 } 302 case TYPE: { 303 Attribute.TypeCompound ta = toTypeCompound(a, pos); 304 typeAnnos.append(ta); 305 // Also keep track which annotations are only type annotations 306 onlyTypeAnnos.append(ta); 307 break; 308 } 309 } 310 } 311 312 sym.resetAnnotations(); 313 sym.setDeclarationAttributes(declAnnos.toList()); 314 315 if (typeAnnos.isEmpty()) { 316 return; 317 } 318 319 List<Attribute.TypeCompound> typeAnnotations = typeAnnos.toList(); 320 321 if (type == null) { 322 // When type is null, put the type annotations to the symbol. 323 // This is used for constructor return annotations, for which 324 // we use the type of the enclosing class. 325 type = sym.getEnclosingElement().asType(); 326 327 // Declaration annotations are always allowed on constructor returns. 328 // Therefore, use typeAnnotations instead of onlyTypeAnnos. 329 type = typeWithAnnotations(typetree, type, typeAnnotations, typeAnnotations); 330 // Note that we don't use the result, the call to 331 // typeWithAnnotations side-effects the type annotation positions. 332 // This is important for constructors of nested classes. 333 sym.appendUniqueTypeAttributes(typeAnnotations); 334 return; 335 } 336 337 // type is non-null and annotations are added to that type 338 type = typeWithAnnotations(typetree, type, typeAnnotations, onlyTypeAnnos.toList()); 339 340 if (sym.getKind() == ElementKind.METHOD) { 341 sym.type.asMethodType().restype = type; 342 } else if (sym.getKind() == ElementKind.PARAMETER) { 343 sym.type = type; 344 if (sym.getQualifiedName().equals(names._this)) { 345 sym.owner.type.asMethodType().recvtype = type; 346 // note that the typeAnnotations will also be added to the owner below. 347 } else { 348 MethodType methType = sym.owner.type.asMethodType(); 349 List<VarSymbol> params = ((MethodSymbol)sym.owner).params; 350 List<Type> oldArgs = methType.argtypes; 351 ListBuffer<Type> newArgs = new ListBuffer<>(); 352 while (params.nonEmpty()) { 353 if (params.head == sym) { 354 newArgs.add(type); 355 } else { 356 newArgs.add(oldArgs.head); 357 } 358 oldArgs = oldArgs.tail; 359 params = params.tail; 360 } 361 methType.argtypes = newArgs.toList(); 362 } 363 } else { 364 sym.type = type; 365 } 366 367 sym.appendUniqueTypeAttributes(typeAnnotations); 368 369 if (sym.getKind() == ElementKind.PARAMETER || 370 sym.getKind() == ElementKind.LOCAL_VARIABLE || 371 sym.getKind() == ElementKind.RESOURCE_VARIABLE || 372 sym.getKind() == ElementKind.EXCEPTION_PARAMETER) { 373 // Make sure all type annotations from the symbol are also 374 // on the owner. 375 sym.owner.appendUniqueTypeAttributes(sym.getRawTypeAttributes()); 376 } 377 } 378 379 // This method has a similar purpose as 380 // {@link com.sun.tools.javac.parser.JavacParser.insertAnnotationsToMostInner(JCExpression, List<JCTypeAnnotation>, boolean)} 381 // We found a type annotation in a declaration annotation position, 382 // for example, on the return type. 383 // Such an annotation is _not_ part of an JCAnnotatedType tree and we therefore 384 // need to set its position explicitly. 385 // The method returns a copy of type that contains these annotations. 386 // 387 // As a side effect the method sets the type annotation position of "annotations". 388 // Note that it is assumed that all annotations share the same position. 389 private Type typeWithAnnotations(final JCTree typetree, final Type type, 390 final List<Attribute.TypeCompound> annotations, 391 final List<Attribute.TypeCompound> onlyTypeAnnotations) { 392 //System.err.printf("typeWithAnnotations(typetree: %s, type: %s, annotations: %s, onlyTypeAnnotations: %s)%n", 393 // typetree, type, annotations, onlyTypeAnnotations); 394 if (annotations.isEmpty()) { 395 return type; 396 } 397 if (type.hasTag(TypeTag.ARRAY)) { 398 Type.ArrayType arType = (Type.ArrayType) type; 399 Type.ArrayType tomodify = new Type.ArrayType(null, arType.tsym); 400 Type toreturn; 401 if (type.isAnnotated()) { 402 toreturn = tomodify.annotatedType(type.getAnnotationMirrors()); 403 } else { 404 toreturn = tomodify; 405 } 406 407 JCArrayTypeTree arTree = arrayTypeTree(typetree); 408 409 ListBuffer<TypePathEntry> depth = new ListBuffer<>(); 410 depth = depth.append(TypePathEntry.ARRAY); 411 while (arType.elemtype.hasTag(TypeTag.ARRAY)) { 412 if (arType.elemtype.isAnnotated()) { 413 Type aelemtype = arType.elemtype; 414 arType = (Type.ArrayType) aelemtype; 415 ArrayType prevToMod = tomodify; 416 tomodify = new Type.ArrayType(null, arType.tsym); 417 prevToMod.elemtype = tomodify.annotatedType(arType.elemtype.getAnnotationMirrors()); 418 } else { 419 arType = (Type.ArrayType) arType.elemtype; 420 tomodify.elemtype = new Type.ArrayType(null, arType.tsym); 421 tomodify = (Type.ArrayType) tomodify.elemtype; 422 } 423 arTree = arrayTypeTree(arTree.elemtype); 424 depth = depth.append(TypePathEntry.ARRAY); 425 } 426 Type arelemType = typeWithAnnotations(arTree.elemtype, arType.elemtype, annotations, onlyTypeAnnotations); 427 tomodify.elemtype = arelemType; 428 { 429 // All annotations share the same position; modify the first one. 430 Attribute.TypeCompound a = annotations.get(0); 431 TypeAnnotationPosition p = a.position; 432 p.location = p.location.prependList(depth.toList()); 433 } 434 typetree.type = toreturn; 435 return toreturn; 436 } else if (type.hasTag(TypeTag.TYPEVAR)) { 437 // Nothing to do for type variables. 438 return type; 439 } else if (type.getKind() == TypeKind.UNION) { 440 // There is a TypeKind, but no TypeTag. 441 JCTypeUnion tutree = (JCTypeUnion) typetree; 442 JCExpression fst = tutree.alternatives.get(0); 443 Type res = typeWithAnnotations(fst, fst.type, annotations, onlyTypeAnnotations); 444 fst.type = res; 445 // TODO: do we want to set res as first element in uct.alternatives? 446 // UnionClassType uct = (com.sun.tools.javac.code.Type.UnionClassType)type; 447 // Return the un-annotated union-type. 448 return type; 449 } else { 450 Type enclTy = type; 451 Element enclEl = type.asElement(); 452 JCTree enclTr = typetree; 453 454 while (enclEl != null && 455 enclEl.getKind() != ElementKind.PACKAGE && 456 enclTy != null && 457 enclTy.getKind() != TypeKind.NONE && 458 enclTy.getKind() != TypeKind.ERROR && 459 (enclTr.getKind() == JCTree.Kind.MEMBER_SELECT || 460 enclTr.getKind() == JCTree.Kind.PARAMETERIZED_TYPE || 461 enclTr.getKind() == JCTree.Kind.ANNOTATED_TYPE)) { 462 // Iterate also over the type tree, not just the type: the type is already 463 // completely resolved and we cannot distinguish where the annotation 464 // belongs for a nested type. 465 if (enclTr.getKind() == JCTree.Kind.MEMBER_SELECT) { 466 // only change encl in this case. 467 enclTy = enclTy.getEnclosingType(); 468 enclEl = enclEl.getEnclosingElement(); 469 enclTr = ((JCFieldAccess)enclTr).getExpression(); 470 } else if (enclTr.getKind() == JCTree.Kind.PARAMETERIZED_TYPE) { 471 enclTr = ((JCTypeApply)enclTr).getType(); 472 } else { 473 // only other option because of while condition 474 enclTr = ((JCAnnotatedType)enclTr).getUnderlyingType(); 475 } 476 } 477 478 /** We are trying to annotate some enclosing type, 479 * but nothing more exists. 480 */ 481 if (enclTy != null && 482 enclTy.hasTag(TypeTag.NONE)) { 483 switch (onlyTypeAnnotations.size()) { 484 case 0: 485 // Don't issue an error if all type annotations are 486 // also declaration annotations. 487 // If the annotations are also declaration annotations, they are 488 // illegal as type annotations but might be legal as declaration annotations. 489 // The normal declaration annotation checks make sure that the use is valid. 490 break; 491 case 1: 492 log.error(typetree.pos(), "cant.type.annotate.scoping.1", 493 onlyTypeAnnotations); 494 break; 495 default: 496 log.error(typetree.pos(), "cant.type.annotate.scoping", 497 onlyTypeAnnotations); 498 } 499 return type; 500 } 501 502 // At this point we have visited the part of the nested 503 // type that is written in the source code. 504 // Now count from here to the actual top-level class to determine 505 // the correct nesting. 506 507 // The genericLocation for the annotation. 508 ListBuffer<TypePathEntry> depth = new ListBuffer<>(); 509 510 Type topTy = enclTy; 511 while (enclEl != null && 512 enclEl.getKind() != ElementKind.PACKAGE && 513 topTy != null && 514 topTy.getKind() != TypeKind.NONE && 515 topTy.getKind() != TypeKind.ERROR) { 516 topTy = topTy.getEnclosingType(); 517 enclEl = enclEl.getEnclosingElement(); 518 519 if (topTy != null && topTy.getKind() != TypeKind.NONE) { 520 // Only count enclosing types. 521 depth = depth.append(TypePathEntry.INNER_TYPE); 522 } 523 } 524 525 if (depth.nonEmpty()) { 526 // Only need to change the annotation positions 527 // if they are on an enclosed type. 528 // All annotations share the same position; modify the first one. 529 Attribute.TypeCompound a = annotations.get(0); 530 TypeAnnotationPosition p = a.position; 531 p.location = p.location.appendList(depth.toList()); 532 } 533 534 Type ret = typeWithAnnotations(type, enclTy, annotations); 535 typetree.type = ret; 536 return ret; 537 } 538 } 539 540 private JCArrayTypeTree arrayTypeTree(JCTree typetree) { 541 if (typetree.getKind() == JCTree.Kind.ARRAY_TYPE) { 542 return (JCArrayTypeTree) typetree; 543 } else if (typetree.getKind() == JCTree.Kind.ANNOTATED_TYPE) { 544 return (JCArrayTypeTree) ((JCAnnotatedType)typetree).underlyingType; 545 } else { 546 Assert.error("Could not determine array type from type tree: " + typetree); 547 return null; 548 } 549 } 550 551 /** Return a copy of the first type that only differs by 552 * inserting the annotations to the left-most/inner-most type 553 * or the type given by stopAt. 554 * 555 * We need the stopAt parameter to know where on a type to 556 * put the annotations. 557 * If we have nested classes Outer > Middle > Inner, and we 558 * have the source type "@A Middle.Inner", we will invoke 559 * this method with type = Outer.Middle.Inner, 560 * stopAt = Middle.Inner, and annotations = @A. 561 * 562 * @param type The type to copy. 563 * @param stopAt The type to stop at. 564 * @param annotations The annotations to insert. 565 * @return A copy of type that contains the annotations. 566 */ 567 private Type typeWithAnnotations(final Type type, 568 final Type stopAt, 569 final List<Attribute.TypeCompound> annotations) { 570 //System.err.println("typeWithAnnotations " + type + " " + annotations + " stopAt " + stopAt); 571 Visitor<Type, List<TypeCompound>> visitor = 572 new Type.Visitor<Type, List<Attribute.TypeCompound>>() { 573 @Override 574 public Type visitClassType(ClassType t, List<TypeCompound> s) { 575 // assert that t.constValue() == null? 576 if (t == stopAt || 577 t.getEnclosingType() == Type.noType) { 578 return t.annotatedType(s); 579 } else { 580 ClassType ret = new ClassType(t.getEnclosingType().accept(this, s), 581 t.typarams_field, t.tsym, 582 t.getMetadata()); 583 ret.all_interfaces_field = t.all_interfaces_field; 584 ret.allparams_field = t.allparams_field; 585 ret.interfaces_field = t.interfaces_field; 586 ret.rank_field = t.rank_field; 587 ret.supertype_field = t.supertype_field; 588 return ret; 589 } 590 } 591 592 @Override 593 public Type visitWildcardType(WildcardType t, List<TypeCompound> s) { 594 return t.annotatedType(s); 595 } 596 597 @Override 598 public Type visitArrayType(ArrayType t, List<TypeCompound> s) { 599 ArrayType ret = new ArrayType(t.elemtype.accept(this, s), t.tsym, 600 t.getMetadata()); 601 return ret; 602 } 603 604 @Override 605 public Type visitMethodType(MethodType t, List<TypeCompound> s) { 606 // Impossible? 607 return t; 608 } 609 610 @Override 611 public Type visitPackageType(PackageType t, List<TypeCompound> s) { 612 // Impossible? 613 return t; 614 } 615 616 @Override 617 public Type visitTypeVar(TypeVar t, List<TypeCompound> s) { 618 return t.annotatedType(s); 619 } 620 621 @Override 622 public Type visitCapturedType(CapturedType t, List<TypeCompound> s) { 623 return t.annotatedType(s); 624 } 625 626 @Override 627 public Type visitForAll(ForAll t, List<TypeCompound> s) { 628 // Impossible? 629 return t; 630 } 631 632 @Override 633 public Type visitUndetVar(UndetVar t, List<TypeCompound> s) { 634 // Impossible? 635 return t; 636 } 637 638 @Override 639 public Type visitErrorType(ErrorType t, List<TypeCompound> s) { 640 return t.annotatedType(s); 641 } 642 643 @Override 644 public Type visitType(Type t, List<TypeCompound> s) { 645 return t.annotatedType(s); 646 } 647 }; 648 649 return type.accept(visitor, annotations); 650 } 651 652 private Attribute.TypeCompound toTypeCompound(Attribute.Compound a, TypeAnnotationPosition p) { 653 // It is safe to alias the position. 654 return new Attribute.TypeCompound(a, p); 655 } 656 657 658 /* This is the beginning of the second part of organizing 659 * type annotations: determine the type annotation positions. 660 */ 661 662 // This method is considered deprecated, and will be removed 663 // in the near future. Don't use it for anything new. 664 private TypeAnnotationPosition 665 resolveFrame(JCTree tree, 666 JCTree frame, 667 List<JCTree> path, 668 JCLambda currentLambda, 669 int outer_type_index, 670 ListBuffer<TypePathEntry> location) { 671 /* 672 System.out.println("Resolving tree: " + tree + " kind: " + tree.getKind()); 673 System.out.println(" Framing tree: " + frame + " kind: " + frame.getKind()); 674 */ 675 676 // Note that p.offset is set in 677 // com.sun.tools.javac.jvm.Gen.setTypeAnnotationPositions(int) 678 679 switch (frame.getKind()) { 680 case TYPE_CAST: 681 return TypeAnnotationPosition.typeCast(location.toList(), 682 currentLambda, 683 outer_type_index, 684 frame.pos); 685 686 case INSTANCE_OF: 687 return TypeAnnotationPosition.instanceOf(location.toList(), 688 currentLambda, 689 frame.pos); 690 691 case NEW_CLASS: 692 final JCNewClass frameNewClass = (JCNewClass) frame; 693 if (frameNewClass.def != null) { 694 // Special handling for anonymous class instantiations 695 final JCClassDecl frameClassDecl = frameNewClass.def; 696 if (frameClassDecl.extending == tree) { 697 return TypeAnnotationPosition 698 .classExtends(location.toList(), currentLambda, 699 frame.pos); 700 } else if (frameClassDecl.implementing.contains(tree)) { 701 final int type_index = 702 frameClassDecl.implementing.indexOf(tree); 703 return TypeAnnotationPosition 704 .classExtends(location.toList(), currentLambda, 705 type_index, frame.pos); 706 } else { 707 // In contrast to CLASS below, typarams cannot occur here. 708 throw new AssertionError("Could not determine position of tree " + tree + 709 " within frame " + frame); 710 } 711 } else if (frameNewClass.typeargs.contains(tree)) { 712 final int type_index = 713 frameNewClass.typeargs.indexOf(tree); 714 return TypeAnnotationPosition 715 .constructorInvocationTypeArg(location.toList(), 716 currentLambda, 717 type_index, 718 frame.pos); 719 } else { 720 return TypeAnnotationPosition 721 .newObj(location.toList(), currentLambda, 722 frame.pos); 723 } 724 725 case NEW_ARRAY: 726 return TypeAnnotationPosition 727 .newObj(location.toList(), currentLambda, frame.pos); 728 729 case ANNOTATION_TYPE: 730 case CLASS: 731 case ENUM: 732 case INTERFACE: 733 if (((JCClassDecl)frame).extending == tree) { 734 return TypeAnnotationPosition 735 .classExtends(location.toList(), currentLambda, 736 frame.pos); 737 } else if (((JCClassDecl)frame).implementing.contains(tree)) { 738 final int type_index = 739 ((JCClassDecl)frame).implementing.indexOf(tree); 740 return TypeAnnotationPosition 741 .classExtends(location.toList(), currentLambda, 742 type_index, frame.pos); 743 } else if (((JCClassDecl)frame).typarams.contains(tree)) { 744 final int parameter_index = 745 ((JCClassDecl)frame).typarams.indexOf(tree); 746 return TypeAnnotationPosition 747 .typeParameter(location.toList(), currentLambda, 748 parameter_index, frame.pos); 749 } else { 750 throw new AssertionError("Could not determine position of tree " + 751 tree + " within frame " + frame); 752 } 753 754 case METHOD: { 755 final JCMethodDecl frameMethod = (JCMethodDecl) frame; 756 if (frameMethod.thrown.contains(tree)) { 757 final int type_index = frameMethod.thrown.indexOf(tree); 758 return TypeAnnotationPosition 759 .methodThrows(location.toList(), currentLambda, 760 type_index, frame.pos); 761 } else if (frameMethod.restype == tree) { 762 return TypeAnnotationPosition 763 .methodReturn(location.toList(), currentLambda, 764 frame.pos); 765 } else if (frameMethod.typarams.contains(tree)) { 766 final int parameter_index = 767 frameMethod.typarams.indexOf(tree); 768 return TypeAnnotationPosition 769 .methodTypeParameter(location.toList(), 770 currentLambda, 771 parameter_index, frame.pos); 772 } else { 773 throw new AssertionError("Could not determine position of tree " + tree + 774 " within frame " + frame); 775 } 776 } 777 778 case PARAMETERIZED_TYPE: { 779 List<JCTree> newPath = path.tail; 780 781 if (((JCTypeApply)frame).clazz == tree) { 782 // generic: RAW; noop 783 } else if (((JCTypeApply)frame).arguments.contains(tree)) { 784 JCTypeApply taframe = (JCTypeApply) frame; 785 int arg = taframe.arguments.indexOf(tree); 786 location = location.prepend( 787 new TypePathEntry(TypePathEntryKind.TYPE_ARGUMENT, 788 arg)); 789 790 Type typeToUse; 791 if (newPath.tail != null && 792 newPath.tail.head.hasTag(Tag.NEWCLASS)) { 793 // If we are within an anonymous class 794 // instantiation, use its type, because it 795 // contains a correctly nested type. 796 typeToUse = newPath.tail.head.type; 797 } else { 798 typeToUse = taframe.type; 799 } 800 801 location = locateNestedTypes(typeToUse, location); 802 } else { 803 throw new AssertionError("Could not determine type argument position of tree " + tree + 804 " within frame " + frame); 805 } 806 807 return resolveFrame(newPath.head, newPath.tail.head, 808 newPath, currentLambda, 809 outer_type_index, location); 810 } 811 812 case MEMBER_REFERENCE: { 813 JCMemberReference mrframe = (JCMemberReference) frame; 814 815 if (mrframe.expr == tree) { 816 switch (mrframe.mode) { 817 case INVOKE: 818 return TypeAnnotationPosition 819 .methodRef(location.toList(), currentLambda, 820 frame.pos); 821 case NEW: 822 return TypeAnnotationPosition 823 .constructorRef(location.toList(), 824 currentLambda, 825 frame.pos); 826 default: 827 throw new AssertionError("Unknown method reference mode " + mrframe.mode + 828 " for tree " + tree + " within frame " + frame); 829 } 830 } else if (mrframe.typeargs != null && 831 mrframe.typeargs.contains(tree)) { 832 final int type_index = mrframe.typeargs.indexOf(tree); 833 switch (mrframe.mode) { 834 case INVOKE: 835 return TypeAnnotationPosition 836 .methodRefTypeArg(location.toList(), 837 currentLambda, 838 type_index, frame.pos); 839 case NEW: 840 return TypeAnnotationPosition 841 .constructorRefTypeArg(location.toList(), 842 currentLambda, 843 type_index, frame.pos); 844 default: 845 throw new AssertionError("Unknown method reference mode " + mrframe.mode + 846 " for tree " + tree + " within frame " + frame); 847 } 848 } else { 849 throw new AssertionError("Could not determine type argument position of tree " + tree + 850 " within frame " + frame); 851 } 852 } 853 854 case ARRAY_TYPE: { 855 location = location.prepend(TypePathEntry.ARRAY); 856 List<JCTree> newPath = path.tail; 857 while (true) { 858 JCTree npHead = newPath.tail.head; 859 if (npHead.hasTag(JCTree.Tag.TYPEARRAY)) { 860 newPath = newPath.tail; 861 location = location.prepend(TypePathEntry.ARRAY); 862 } else if (npHead.hasTag(JCTree.Tag.ANNOTATED_TYPE)) { 863 newPath = newPath.tail; 864 } else { 865 break; 866 } 867 } 868 return resolveFrame(newPath.head, newPath.tail.head, 869 newPath, currentLambda, 870 outer_type_index, location); 871 } 872 873 case TYPE_PARAMETER: 874 if (path.tail.tail.head.hasTag(JCTree.Tag.CLASSDEF)) { 875 final JCClassDecl clazz = 876 (JCClassDecl)path.tail.tail.head; 877 final int parameter_index = 878 clazz.typarams.indexOf(path.tail.head); 879 final int bound_index = 880 ((JCTypeParameter)frame).bounds.get(0) 881 .type.isInterface() ? 882 ((JCTypeParameter)frame).bounds.indexOf(tree) + 1: 883 ((JCTypeParameter)frame).bounds.indexOf(tree); 884 return TypeAnnotationPosition 885 .typeParameterBound(location.toList(), 886 currentLambda, 887 parameter_index, bound_index, 888 frame.pos); 889 } else if (path.tail.tail.head.hasTag(JCTree.Tag.METHODDEF)) { 890 final JCMethodDecl method = 891 (JCMethodDecl)path.tail.tail.head; 892 final int parameter_index = 893 method.typarams.indexOf(path.tail.head); 894 final int bound_index = 895 ((JCTypeParameter)frame).bounds.get(0) 896 .type.isInterface() ? 897 ((JCTypeParameter)frame).bounds.indexOf(tree) + 1: 898 ((JCTypeParameter)frame).bounds.indexOf(tree); 899 return TypeAnnotationPosition 900 .methodTypeParameterBound(location.toList(), 901 currentLambda, 902 parameter_index, 903 bound_index, 904 frame.pos); 905 } else { 906 throw new AssertionError("Could not determine position of tree " + tree + 907 " within frame " + frame); 908 } 909 910 case VARIABLE: 911 VarSymbol v = ((JCVariableDecl)frame).sym; 912 if (v.getKind() != ElementKind.FIELD) { 913 v.owner.appendUniqueTypeAttributes(v.getRawTypeAttributes()); 914 } 915 switch (v.getKind()) { 916 case LOCAL_VARIABLE: 917 return TypeAnnotationPosition 918 .localVariable(location.toList(), currentLambda, 919 frame.pos); 920 case FIELD: 921 return TypeAnnotationPosition.field(location.toList(), 922 currentLambda, 923 frame.pos); 924 case PARAMETER: 925 if (v.getQualifiedName().equals(names._this)) { 926 return TypeAnnotationPosition 927 .methodReceiver(location.toList(), 928 currentLambda, 929 frame.pos); 930 } else { 931 final int parameter_index = 932 methodParamIndex(path, frame); 933 return TypeAnnotationPosition 934 .methodParameter(location.toList(), 935 currentLambda, 936 parameter_index, 937 frame.pos); 938 } 939 case EXCEPTION_PARAMETER: 940 return TypeAnnotationPosition 941 .exceptionParameter(location.toList(), 942 currentLambda, 943 frame.pos); 944 case RESOURCE_VARIABLE: 945 return TypeAnnotationPosition 946 .resourceVariable(location.toList(), 947 currentLambda, 948 frame.pos); 949 default: 950 throw new AssertionError("Found unexpected type annotation for variable: " + v + " with kind: " + v.getKind()); 951 } 952 953 case ANNOTATED_TYPE: { 954 if (frame == tree) { 955 // This is only true for the first annotated type we see. 956 // For any other annotated types along the path, we do 957 // not care about inner types. 958 JCAnnotatedType atypetree = (JCAnnotatedType) frame; 959 final Type utype = atypetree.underlyingType.type; 960 Assert.checkNonNull(utype); 961 Symbol tsym = utype.tsym; 962 if (tsym.getKind().equals(ElementKind.TYPE_PARAMETER) || 963 utype.getKind().equals(TypeKind.WILDCARD) || 964 utype.getKind().equals(TypeKind.ARRAY)) { 965 // Type parameters, wildcards, and arrays have the declaring 966 // class/method as enclosing elements. 967 // There is actually nothing to do for them. 968 } else { 969 location = locateNestedTypes(utype, location); 970 } 971 } 972 List<JCTree> newPath = path.tail; 973 return resolveFrame(newPath.head, newPath.tail.head, 974 newPath, currentLambda, 975 outer_type_index, location); 976 } 977 978 case UNION_TYPE: { 979 List<JCTree> newPath = path.tail; 980 return resolveFrame(newPath.head, newPath.tail.head, 981 newPath, currentLambda, 982 outer_type_index, location); 983 } 984 985 case INTERSECTION_TYPE: { 986 JCTypeIntersection isect = (JCTypeIntersection)frame; 987 final List<JCTree> newPath = path.tail; 988 return resolveFrame(newPath.head, newPath.tail.head, 989 newPath, currentLambda, 990 isect.bounds.indexOf(tree), location); 991 } 992 993 case METHOD_INVOCATION: { 994 JCMethodInvocation invocation = (JCMethodInvocation)frame; 995 if (!invocation.typeargs.contains(tree)) { 996 throw new AssertionError("{" + tree + "} is not an argument in the invocation: " + invocation); 997 } 998 MethodSymbol exsym = (MethodSymbol) TreeInfo.symbol(invocation.getMethodSelect()); 999 final int type_index = invocation.typeargs.indexOf(tree); 1000 if (exsym == null) { 1001 throw new AssertionError("could not determine symbol for {" + invocation + "}"); 1002 } else if (exsym.isConstructor()) { 1003 return TypeAnnotationPosition 1004 .constructorInvocationTypeArg(location.toList(), 1005 currentLambda, 1006 type_index, 1007 invocation.pos); 1008 } else { 1009 return TypeAnnotationPosition 1010 .methodInvocationTypeArg(location.toList(), 1011 currentLambda, 1012 type_index, 1013 invocation.pos); 1014 } 1015 } 1016 1017 case EXTENDS_WILDCARD: 1018 case SUPER_WILDCARD: { 1019 // Annotations in wildcard bounds 1020 final List<JCTree> newPath = path.tail; 1021 return resolveFrame(newPath.head, newPath.tail.head, 1022 newPath, currentLambda, 1023 outer_type_index, 1024 location.prepend(TypePathEntry.WILDCARD)); 1025 } 1026 1027 case MEMBER_SELECT: { 1028 final List<JCTree> newPath = path.tail; 1029 return resolveFrame(newPath.head, newPath.tail.head, 1030 newPath, currentLambda, 1031 outer_type_index, location); 1032 } 1033 1034 default: 1035 throw new AssertionError("Unresolved frame: " + frame + 1036 " of kind: " + frame.getKind() + 1037 "\n Looking for tree: " + tree); 1038 } 1039 } 1040 1041 private ListBuffer<TypePathEntry> 1042 locateNestedTypes(Type type, 1043 ListBuffer<TypePathEntry> depth) { 1044 Type encl = type.getEnclosingType(); 1045 while (encl != null && 1046 encl.getKind() != TypeKind.NONE && 1047 encl.getKind() != TypeKind.ERROR) { 1048 depth = depth.prepend(TypePathEntry.INNER_TYPE); 1049 encl = encl.getEnclosingType(); 1050 } 1051 return depth; 1052 } 1053 1054 private int methodParamIndex(List<JCTree> path, JCTree param) { 1055 List<JCTree> curr = path; 1056 while (curr.head.getTag() != Tag.METHODDEF && 1057 curr.head.getTag() != Tag.LAMBDA) { 1058 curr = curr.tail; 1059 } 1060 if (curr.head.getTag() == Tag.METHODDEF) { 1061 JCMethodDecl method = (JCMethodDecl)curr.head; 1062 return method.params.indexOf(param); 1063 } else if (curr.head.getTag() == Tag.LAMBDA) { 1064 JCLambda lambda = (JCLambda)curr.head; 1065 return lambda.params.indexOf(param); 1066 } else { 1067 Assert.error("methodParamIndex expected to find method or lambda for param: " + param); 1068 return -1; 1069 } 1070 } 1071 1072 // Each class (including enclosed inner classes) is visited separately. 1073 // This flag is used to prevent from visiting inner classes. 1074 private boolean isInClass = false; 1075 1076 @Override 1077 public void visitClassDef(JCClassDecl tree) { 1078 if (isInClass) 1079 return; 1080 isInClass = true; 1081 1082 if (sigOnly) { 1083 scan(tree.mods); 1084 scan(tree.typarams); 1085 scan(tree.extending); 1086 scan(tree.implementing); 1087 } 1088 scan(tree.defs); 1089 } 1090 1091 /** 1092 * Resolve declaration vs. type annotations in methods and 1093 * then determine the positions. 1094 */ 1095 @Override 1096 public void visitMethodDef(final JCMethodDecl tree) { 1097 if (tree.sym == null) { 1098 Assert.error("Visiting tree node before memberEnter"); 1099 } 1100 if (sigOnly) { 1101 if (!tree.mods.annotations.isEmpty()) { 1102 if (tree.sym.isConstructor()) { 1103 final TypeAnnotationPosition pos = 1104 TypeAnnotationPosition.methodReturn(tree.pos); 1105 // Use null to mark that the annotations go 1106 // with the symbol. 1107 separateAnnotationsKinds(tree, null, tree.sym, pos); 1108 } else { 1109 final TypeAnnotationPosition pos = 1110 TypeAnnotationPosition.methodReturn(tree.restype.pos); 1111 separateAnnotationsKinds(tree.restype, 1112 tree.sym.type.getReturnType(), 1113 tree.sym, pos); 1114 } 1115 } 1116 if (tree.recvparam != null && tree.recvparam.sym != null && 1117 !tree.recvparam.mods.annotations.isEmpty()) { 1118 // Nothing to do for separateAnnotationsKinds if 1119 // there are no annotations of either kind. 1120 // TODO: make sure there are no declaration annotations. 1121 final TypeAnnotationPosition pos = 1122 TypeAnnotationPosition.methodReceiver(tree.recvparam.vartype.pos); 1123 separateAnnotationsKinds(tree.recvparam.vartype, 1124 tree.recvparam.sym.type, 1125 tree.recvparam.sym, pos); 1126 } 1127 int i = 0; 1128 for (JCVariableDecl param : tree.params) { 1129 if (!param.mods.annotations.isEmpty()) { 1130 // Nothing to do for separateAnnotationsKinds if 1131 // there are no annotations of either kind. 1132 final TypeAnnotationPosition pos = 1133 TypeAnnotationPosition.methodParameter(i, param.vartype.pos); 1134 separateAnnotationsKinds(param.vartype, 1135 param.sym.type, 1136 param.sym, pos); 1137 } 1138 ++i; 1139 } 1140 } 1141 1142 push(tree); 1143 // super.visitMethodDef(tree); 1144 if (sigOnly) { 1145 scan(tree.mods); 1146 scan(tree.restype); 1147 scan(tree.typarams); 1148 scan(tree.recvparam); 1149 scan(tree.params); 1150 scan(tree.thrown); 1151 } else { 1152 scan(tree.defaultValue); 1153 scan(tree.body); 1154 } 1155 pop(); 1156 } 1157 1158 /* Store a reference to the current lambda expression, to 1159 * be used by all type annotations within this expression. 1160 */ 1161 private JCLambda currentLambda = null; 1162 1163 public void visitLambda(JCLambda tree) { 1164 JCLambda prevLambda = currentLambda; 1165 try { 1166 currentLambda = tree; 1167 1168 int i = 0; 1169 for (JCVariableDecl param : tree.params) { 1170 if (!param.mods.annotations.isEmpty()) { 1171 // Nothing to do for separateAnnotationsKinds if 1172 // there are no annotations of either kind. 1173 final TypeAnnotationPosition pos = 1174 TypeAnnotationPosition.methodParameter(tree, i, 1175 param.vartype.pos); 1176 separateAnnotationsKinds(param.vartype, param.sym.type, param.sym, pos); 1177 } 1178 ++i; 1179 } 1180 1181 push(tree); 1182 scan(tree.body); 1183 scan(tree.params); 1184 pop(); 1185 } finally { 1186 currentLambda = prevLambda; 1187 } 1188 } 1189 1190 /** 1191 * Resolve declaration vs. type annotations in variable declarations and 1192 * then determine the positions. 1193 */ 1194 @Override 1195 public void visitVarDef(final JCVariableDecl tree) { 1196 if (tree.mods.annotations.isEmpty()) { 1197 // Nothing to do for separateAnnotationsKinds if 1198 // there are no annotations of either kind. 1199 } else if (tree.sym == null) { 1200 Assert.error("Visiting tree node before memberEnter"); 1201 } else if (tree.sym.getKind() == ElementKind.PARAMETER) { 1202 // Parameters are handled in visitMethodDef or visitLambda. 1203 } else if (tree.sym.getKind() == ElementKind.FIELD) { 1204 if (sigOnly) { 1205 TypeAnnotationPosition pos = 1206 TypeAnnotationPosition.field(tree.pos); 1207 separateAnnotationsKinds(tree.vartype, tree.sym.type, tree.sym, pos); 1208 } 1209 } else if (tree.sym.getKind() == ElementKind.LOCAL_VARIABLE) { 1210 final TypeAnnotationPosition pos = 1211 TypeAnnotationPosition.localVariable(currentLambda, 1212 tree.pos); 1213 separateAnnotationsKinds(tree.vartype, tree.sym.type, tree.sym, pos); 1214 } else if (tree.sym.getKind() == ElementKind.EXCEPTION_PARAMETER) { 1215 final TypeAnnotationPosition pos = 1216 TypeAnnotationPosition.exceptionParameter(currentLambda, 1217 tree.pos); 1218 separateAnnotationsKinds(tree.vartype, tree.sym.type, tree.sym, pos); 1219 } else if (tree.sym.getKind() == ElementKind.RESOURCE_VARIABLE) { 1220 final TypeAnnotationPosition pos = 1221 TypeAnnotationPosition.resourceVariable(currentLambda, 1222 tree.pos); 1223 separateAnnotationsKinds(tree.vartype, tree.sym.type, tree.sym, pos); 1224 } else if (tree.sym.getKind() == ElementKind.ENUM_CONSTANT) { 1225 // No type annotations can occur here. 1226 } else { 1227 // There is nothing else in a variable declaration that needs separation. 1228 Assert.error("Unhandled variable kind: " + tree + " of kind: " + tree.sym.getKind()); 1229 } 1230 1231 push(tree); 1232 // super.visitVarDef(tree); 1233 scan(tree.mods); 1234 scan(tree.vartype); 1235 if (!sigOnly) { 1236 scan(tree.init); 1237 } 1238 pop(); 1239 } 1240 1241 @Override 1242 public void visitBlock(JCBlock tree) { 1243 // Do not descend into top-level blocks when only interested 1244 // in the signature. 1245 if (!sigOnly) { 1246 scan(tree.stats); 1247 } 1248 } 1249 1250 @Override 1251 public void visitAnnotatedType(JCAnnotatedType tree) { 1252 push(tree); 1253 findPosition(tree, tree, tree.annotations); 1254 pop(); 1255 super.visitAnnotatedType(tree); 1256 } 1257 1258 @Override 1259 public void visitTypeParameter(JCTypeParameter tree) { 1260 findPosition(tree, peek2(), tree.annotations); 1261 super.visitTypeParameter(tree); 1262 } 1263 1264 private void copyNewClassAnnotationsToOwner(JCNewClass tree) { 1265 Symbol sym = tree.def.sym; 1266 final TypeAnnotationPosition pos = 1267 TypeAnnotationPosition.newObj(tree.pos); 1268 ListBuffer<Attribute.TypeCompound> newattrs = new ListBuffer<>(); 1269 1270 for (Attribute.TypeCompound old : sym.getRawTypeAttributes()) { 1271 newattrs.append(new Attribute.TypeCompound(old.type, old.values, 1272 pos)); 1273 } 1274 1275 sym.owner.appendUniqueTypeAttributes(newattrs.toList()); 1276 } 1277 1278 @Override 1279 public void visitNewClass(JCNewClass tree) { 1280 if (tree.def != null && 1281 !tree.def.mods.annotations.isEmpty()) { 1282 JCClassDecl classdecl = tree.def; 1283 TypeAnnotationPosition pos; 1284 1285 if (classdecl.extending == tree.clazz) { 1286 pos = TypeAnnotationPosition.classExtends(tree.pos); 1287 } else if (classdecl.implementing.contains(tree.clazz)) { 1288 final int index = classdecl.implementing.indexOf(tree.clazz); 1289 pos = TypeAnnotationPosition.classExtends(index, tree.pos); 1290 } else { 1291 // In contrast to CLASS elsewhere, typarams cannot occur here. 1292 throw new AssertionError("Could not determine position of tree " + tree); 1293 } 1294 Type before = classdecl.sym.type; 1295 separateAnnotationsKinds(classdecl, tree.clazz.type, classdecl.sym, pos); 1296 copyNewClassAnnotationsToOwner(tree); 1297 // classdecl.sym.type now contains an annotated type, which 1298 // is not what we want there. 1299 // TODO: should we put this type somewhere in the superclass/interface? 1300 classdecl.sym.type = before; 1301 } 1302 1303 scan(tree.encl); 1304 scan(tree.typeargs); 1305 scan(tree.clazz); 1306 scan(tree.args); 1307 1308 // The class body will already be scanned. 1309 // scan(tree.def); 1310 } 1311 1312 @Override 1313 public void visitNewArray(JCNewArray tree) { 1314 findPosition(tree, tree, tree.annotations); 1315 int dimAnnosCount = tree.dimAnnotations.size(); 1316 ListBuffer<TypePathEntry> depth = new ListBuffer<>(); 1317 1318 // handle annotations associated with dimensions 1319 for (int i = 0; i < dimAnnosCount; ++i) { 1320 ListBuffer<TypePathEntry> location = 1321 new ListBuffer<TypePathEntry>(); 1322 if (i != 0) { 1323 depth = depth.append(TypePathEntry.ARRAY); 1324 location = location.appendList(depth.toList()); 1325 } 1326 final TypeAnnotationPosition p = 1327 TypeAnnotationPosition.newObj(location.toList(), 1328 currentLambda, 1329 tree.pos); 1330 1331 setTypeAnnotationPos(tree.dimAnnotations.get(i), p); 1332 } 1333 1334 // handle "free" annotations 1335 // int i = dimAnnosCount == 0 ? 0 : dimAnnosCount - 1; 1336 // TODO: is depth.size == i here? 1337 JCExpression elemType = tree.elemtype; 1338 depth = depth.append(TypePathEntry.ARRAY); 1339 while (elemType != null) { 1340 if (elemType.hasTag(JCTree.Tag.ANNOTATED_TYPE)) { 1341 JCAnnotatedType at = (JCAnnotatedType)elemType; 1342 final ListBuffer<TypePathEntry> locationbuf = 1343 locateNestedTypes(elemType.type, 1344 new ListBuffer<TypePathEntry>()); 1345 final List<TypePathEntry> location = 1346 locationbuf.toList().prependList(depth.toList()); 1347 final TypeAnnotationPosition p = 1348 TypeAnnotationPosition.newObj(location, currentLambda, 1349 tree.pos); 1350 setTypeAnnotationPos(at.annotations, p); 1351 elemType = at.underlyingType; 1352 } else if (elemType.hasTag(JCTree.Tag.TYPEARRAY)) { 1353 depth = depth.append(TypePathEntry.ARRAY); 1354 elemType = ((JCArrayTypeTree)elemType).elemtype; 1355 } else if (elemType.hasTag(JCTree.Tag.SELECT)) { 1356 elemType = ((JCFieldAccess)elemType).selected; 1357 } else { 1358 break; 1359 } 1360 } 1361 scan(tree.elems); 1362 } 1363 1364 private void findPosition(JCTree tree, JCTree frame, List<JCAnnotation> annotations) { 1365 if (!annotations.isEmpty()) { 1366 /* 1367 System.err.println("Finding pos for: " + annotations); 1368 System.err.println(" tree: " + tree + " kind: " + tree.getKind()); 1369 System.err.println(" frame: " + frame + " kind: " + frame.getKind()); 1370 */ 1371 final TypeAnnotationPosition p = 1372 resolveFrame(tree, frame, frames.toList(), currentLambda, 0, 1373 new ListBuffer<TypePathEntry>()); 1374 setTypeAnnotationPos(annotations, p); 1375 } 1376 } 1377 1378 private void setTypeAnnotationPos(List<JCAnnotation> annotations, 1379 TypeAnnotationPosition position) { 1380 for (JCAnnotation anno : annotations) { 1381 // attribute might be null during DeferredAttr; 1382 // we will be back later. 1383 if (anno.attribute != null) { 1384 ((Attribute.TypeCompound) anno.attribute).position = position; 1385 } 1386 } 1387 } 1388 1389 @Override 1390 public String toString() { 1391 return super.toString() + ": sigOnly: " + sigOnly; 1392 } 1393 } 1394} 1395