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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 library services.src.index.index_contributor; | |
| 6 | |
| 7 import 'dart:collection' show Queue; | |
| 8 | |
| 9 import 'package:analysis_server/src/provisional/index/index_core.dart'; | |
| 10 import 'package:analysis_server/src/services/correction/namespace.dart'; | |
| 11 import 'package:analysis_server/src/services/index/index.dart'; | |
| 12 import 'package:analysis_server/src/services/index/index_store.dart'; | |
| 13 import 'package:analysis_server/src/services/index/indexable_element.dart'; | |
| 14 import 'package:analysis_server/src/services/index/indexable_file.dart'; | |
| 15 import 'package:analyzer/dart/ast/ast.dart'; | |
| 16 import 'package:analyzer/dart/ast/token.dart'; | |
| 17 import 'package:analyzer/dart/ast/visitor.dart'; | |
| 18 import 'package:analyzer/dart/element/element.dart'; | |
| 19 import 'package:analyzer/dart/element/type.dart'; | |
| 20 import 'package:analyzer/src/generated/engine.dart'; | |
| 21 import 'package:analyzer/src/generated/java_engine.dart'; | |
| 22 import 'package:analyzer/src/generated/source.dart'; | |
| 23 | |
| 24 /** | |
| 25 * An [IndexContributor] that contributes relationships for Dart files. | |
| 26 */ | |
| 27 class DartIndexContributor extends IndexContributor { | |
| 28 @override | |
| 29 void contributeTo(IndexStore store, AnalysisContext context, Object object) { | |
| 30 if (store is InternalIndexStore && object is CompilationUnit) { | |
| 31 _IndexContributor contributor = new _IndexContributor(store); | |
| 32 object.accept(contributor); | |
| 33 } | |
| 34 } | |
| 35 } | |
| 36 | |
| 37 /** | |
| 38 * Visits a resolved AST and adds relationships into [InternalIndexStore]. | |
| 39 */ | |
| 40 class _IndexContributor extends GeneralizingAstVisitor { | |
| 41 final InternalIndexStore _store; | |
| 42 | |
| 43 CompilationUnitElement _unitElement; | |
| 44 LibraryElement _libraryElement; | |
| 45 | |
| 46 Map<ImportElement, Set<Element>> _importElementsMap = {}; | |
| 47 | |
| 48 /** | |
| 49 * A stack whose top element (the element with the largest index) is an | |
| 50 * element representing the inner-most enclosing scope. | |
| 51 */ | |
| 52 Queue<Element> _elementStack = new Queue(); | |
| 53 | |
| 54 _IndexContributor(this._store); | |
| 55 | |
| 56 /** | |
| 57 * Enter a new scope represented by the given [Element]. | |
| 58 */ | |
| 59 void enterScope(Element element) { | |
| 60 _elementStack.addFirst(element); | |
| 61 } | |
| 62 | |
| 63 /** | |
| 64 * Return the inner-most enclosing [Element], wrapped as an indexable object, | |
| 65 * or `null` if there is no enclosing element. | |
| 66 */ | |
| 67 IndexableElement peekElement() { | |
| 68 for (Element element in _elementStack) { | |
| 69 if (element != null) { | |
| 70 return new IndexableElement(element); | |
| 71 } | |
| 72 } | |
| 73 return null; | |
| 74 } | |
| 75 | |
| 76 /** | |
| 77 * Record the given relationship between the given [Element] and | |
| 78 * [LocationImpl]. | |
| 79 */ | |
| 80 void recordRelationshipElement( | |
| 81 Element element, RelationshipImpl relationship, LocationImpl location) { | |
| 82 if (element != null && location != null) { | |
| 83 _store.recordRelationship( | |
| 84 new IndexableElement(element), relationship, location); | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 /** | |
| 89 * Record the given relationship between the given [IndexableObject] and | |
| 90 * [LocationImpl]. | |
| 91 */ | |
| 92 void recordRelationshipIndexable(IndexableObject indexable, | |
| 93 RelationshipImpl relationship, LocationImpl location) { | |
| 94 if (indexable != null && location != null) { | |
| 95 _store.recordRelationship(indexable, relationship, location); | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 @override | |
| 100 visitAssignmentExpression(AssignmentExpression node) { | |
| 101 _recordOperatorReference(node.operator, node.bestElement); | |
| 102 super.visitAssignmentExpression(node); | |
| 103 } | |
| 104 | |
| 105 @override | |
| 106 visitBinaryExpression(BinaryExpression node) { | |
| 107 _recordOperatorReference(node.operator, node.bestElement); | |
| 108 super.visitBinaryExpression(node); | |
| 109 } | |
| 110 | |
| 111 @override | |
| 112 visitClassDeclaration(ClassDeclaration node) { | |
| 113 ClassElement element = node.element; | |
| 114 enterScope(element); | |
| 115 try { | |
| 116 _recordTopLevelElementDefinition(element); | |
| 117 _recordHasAncestor(element); | |
| 118 { | |
| 119 ExtendsClause extendsClause = node.extendsClause; | |
| 120 if (extendsClause != null) { | |
| 121 TypeName superclassNode = extendsClause.superclass; | |
| 122 _recordSuperType(superclassNode, IndexConstants.IS_EXTENDED_BY); | |
| 123 } else { | |
| 124 InterfaceType superType = element.supertype; | |
| 125 if (superType != null) { | |
| 126 ClassElement objectElement = superType.element; | |
| 127 recordRelationshipElement( | |
| 128 objectElement, | |
| 129 IndexConstants.IS_EXTENDED_BY, | |
| 130 _createLocationForOffset(node.name.offset, 0)); | |
| 131 } | |
| 132 } | |
| 133 } | |
| 134 { | |
| 135 WithClause withClause = node.withClause; | |
| 136 if (withClause != null) { | |
| 137 for (TypeName mixinNode in withClause.mixinTypes) { | |
| 138 _recordSuperType(mixinNode, IndexConstants.IS_MIXED_IN_BY); | |
| 139 } | |
| 140 } | |
| 141 } | |
| 142 { | |
| 143 ImplementsClause implementsClause = node.implementsClause; | |
| 144 if (implementsClause != null) { | |
| 145 for (TypeName interfaceNode in implementsClause.interfaces) { | |
| 146 _recordSuperType(interfaceNode, IndexConstants.IS_IMPLEMENTED_BY); | |
| 147 } | |
| 148 } | |
| 149 } | |
| 150 super.visitClassDeclaration(node); | |
| 151 } finally { | |
| 152 _exitScope(); | |
| 153 } | |
| 154 } | |
| 155 | |
| 156 @override | |
| 157 visitClassTypeAlias(ClassTypeAlias node) { | |
| 158 ClassElement element = node.element; | |
| 159 enterScope(element); | |
| 160 try { | |
| 161 _recordTopLevelElementDefinition(element); | |
| 162 _recordHasAncestor(element); | |
| 163 { | |
| 164 TypeName superclassNode = node.superclass; | |
| 165 if (superclassNode != null) { | |
| 166 _recordSuperType(superclassNode, IndexConstants.IS_EXTENDED_BY); | |
| 167 } | |
| 168 } | |
| 169 { | |
| 170 WithClause withClause = node.withClause; | |
| 171 if (withClause != null) { | |
| 172 for (TypeName mixinNode in withClause.mixinTypes) { | |
| 173 _recordSuperType(mixinNode, IndexConstants.IS_MIXED_IN_BY); | |
| 174 } | |
| 175 } | |
| 176 } | |
| 177 { | |
| 178 ImplementsClause implementsClause = node.implementsClause; | |
| 179 if (implementsClause != null) { | |
| 180 for (TypeName interfaceNode in implementsClause.interfaces) { | |
| 181 _recordSuperType(interfaceNode, IndexConstants.IS_IMPLEMENTED_BY); | |
| 182 } | |
| 183 } | |
| 184 } | |
| 185 super.visitClassTypeAlias(node); | |
| 186 } finally { | |
| 187 _exitScope(); | |
| 188 } | |
| 189 } | |
| 190 | |
| 191 @override | |
| 192 visitCompilationUnit(CompilationUnit node) { | |
| 193 _unitElement = node.element; | |
| 194 if (_unitElement != null) { | |
| 195 _elementStack.add(_unitElement); | |
| 196 _libraryElement = _unitElement.enclosingElement; | |
| 197 if (_libraryElement != null) { | |
| 198 super.visitCompilationUnit(node); | |
| 199 } | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 @override | |
| 204 visitConstructorDeclaration(ConstructorDeclaration node) { | |
| 205 ConstructorElement element = node.element; | |
| 206 enterScope(element); | |
| 207 try { | |
| 208 super.visitConstructorDeclaration(node); | |
| 209 } finally { | |
| 210 _exitScope(); | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 @override | |
| 215 visitConstructorFieldInitializer(ConstructorFieldInitializer node) { | |
| 216 SimpleIdentifier fieldName = node.fieldName; | |
| 217 Expression expression = node.expression; | |
| 218 // field reference is write here | |
| 219 if (fieldName != null) { | |
| 220 Element element = fieldName.staticElement; | |
| 221 LocationImpl location = _createLocationForNode(fieldName); | |
| 222 recordRelationshipElement( | |
| 223 element, IndexConstants.IS_WRITTEN_BY, location); | |
| 224 } | |
| 225 // index expression | |
| 226 if (expression != null) { | |
| 227 expression.accept(this); | |
| 228 } | |
| 229 } | |
| 230 | |
| 231 @override | |
| 232 visitConstructorName(ConstructorName node) { | |
| 233 ConstructorElement element = node.staticElement; | |
| 234 // in 'class B = A;' actually A constructors are invoked | |
| 235 if (element != null && | |
| 236 element.isSynthetic && | |
| 237 element.redirectedConstructor != null) { | |
| 238 element = element.redirectedConstructor; | |
| 239 } | |
| 240 // prepare location | |
| 241 LocationImpl location; | |
| 242 if (node.name != null) { | |
| 243 int start = node.period.offset; | |
| 244 int end = node.name.end; | |
| 245 location = _createLocationForOffset(start, end - start); | |
| 246 } else { | |
| 247 int start = node.type.end; | |
| 248 location = _createLocationForOffset(start, 0); | |
| 249 } | |
| 250 // record relationship | |
| 251 recordRelationshipElement( | |
| 252 element, IndexConstants.IS_REFERENCED_BY, location); | |
| 253 super.visitConstructorName(node); | |
| 254 } | |
| 255 | |
| 256 @override | |
| 257 visitDeclaredIdentifier(DeclaredIdentifier node) { | |
| 258 LocalVariableElement element = node.element; | |
| 259 enterScope(element); | |
| 260 try { | |
| 261 super.visitDeclaredIdentifier(node); | |
| 262 } finally { | |
| 263 _exitScope(); | |
| 264 } | |
| 265 } | |
| 266 | |
| 267 @override | |
| 268 visitEnumDeclaration(EnumDeclaration node) { | |
| 269 ClassElement element = node.element; | |
| 270 enterScope(element); | |
| 271 try { | |
| 272 _recordTopLevelElementDefinition(element); | |
| 273 super.visitEnumDeclaration(node); | |
| 274 } finally { | |
| 275 _exitScope(); | |
| 276 } | |
| 277 } | |
| 278 | |
| 279 @override | |
| 280 visitExportDirective(ExportDirective node) { | |
| 281 ExportElement element = node.element; | |
| 282 if (element != null) { | |
| 283 LibraryElement expLibrary = element.exportedLibrary; | |
| 284 _recordLibraryReference(node, expLibrary); | |
| 285 } | |
| 286 _recordUriFileReference(node); | |
| 287 super.visitExportDirective(node); | |
| 288 } | |
| 289 | |
| 290 @override | |
| 291 visitFormalParameter(FormalParameter node) { | |
| 292 ParameterElement element = node.element; | |
| 293 enterScope(element); | |
| 294 try { | |
| 295 super.visitFormalParameter(node); | |
| 296 } finally { | |
| 297 _exitScope(); | |
| 298 } | |
| 299 } | |
| 300 | |
| 301 @override | |
| 302 visitFunctionDeclaration(FunctionDeclaration node) { | |
| 303 Element element = node.element; | |
| 304 _recordTopLevelElementDefinition(element); | |
| 305 enterScope(element); | |
| 306 try { | |
| 307 super.visitFunctionDeclaration(node); | |
| 308 } finally { | |
| 309 _exitScope(); | |
| 310 } | |
| 311 } | |
| 312 | |
| 313 @override | |
| 314 visitFunctionTypeAlias(FunctionTypeAlias node) { | |
| 315 Element element = node.element; | |
| 316 _recordTopLevelElementDefinition(element); | |
| 317 super.visitFunctionTypeAlias(node); | |
| 318 } | |
| 319 | |
| 320 @override | |
| 321 visitImportDirective(ImportDirective node) { | |
| 322 ImportElement element = node.element; | |
| 323 if (element != null) { | |
| 324 LibraryElement impLibrary = element.importedLibrary; | |
| 325 _recordLibraryReference(node, impLibrary); | |
| 326 } | |
| 327 _recordUriFileReference(node); | |
| 328 super.visitImportDirective(node); | |
| 329 } | |
| 330 | |
| 331 @override | |
| 332 visitIndexExpression(IndexExpression node) { | |
| 333 MethodElement element = node.bestElement; | |
| 334 if (element is MethodElement) { | |
| 335 Token operator = node.leftBracket; | |
| 336 LocationImpl location = | |
| 337 _createLocationForToken(operator, element != null); | |
| 338 recordRelationshipElement( | |
| 339 element, IndexConstants.IS_INVOKED_BY, location); | |
| 340 } | |
| 341 super.visitIndexExpression(node); | |
| 342 } | |
| 343 | |
| 344 @override | |
| 345 visitMethodDeclaration(MethodDeclaration node) { | |
| 346 ExecutableElement element = node.element; | |
| 347 enterScope(element); | |
| 348 try { | |
| 349 super.visitMethodDeclaration(node); | |
| 350 } finally { | |
| 351 _exitScope(); | |
| 352 } | |
| 353 } | |
| 354 | |
| 355 @override | |
| 356 visitMethodInvocation(MethodInvocation node) { | |
| 357 SimpleIdentifier name = node.methodName; | |
| 358 LocationImpl location = _createLocationForNode(name); | |
| 359 // name invocation | |
| 360 recordRelationshipIndexable( | |
| 361 new IndexableName(name.name), IndexConstants.IS_INVOKED_BY, location); | |
| 362 // element invocation | |
| 363 Element element = name.bestElement; | |
| 364 if (element is MethodElement || | |
| 365 element is PropertyAccessorElement || | |
| 366 element is FunctionElement || | |
| 367 element is VariableElement) { | |
| 368 recordRelationshipElement( | |
| 369 element, IndexConstants.IS_INVOKED_BY, location); | |
| 370 } else if (element is ClassElement) { | |
| 371 recordRelationshipElement( | |
| 372 element, IndexConstants.IS_REFERENCED_BY, location); | |
| 373 } | |
| 374 _recordImportElementReferenceWithoutPrefix(name); | |
| 375 super.visitMethodInvocation(node); | |
| 376 } | |
| 377 | |
| 378 @override | |
| 379 visitPartDirective(PartDirective node) { | |
| 380 Element element = node.element; | |
| 381 LocationImpl location = _createLocationForNode(node.uri); | |
| 382 recordRelationshipElement( | |
| 383 element, IndexConstants.IS_REFERENCED_BY, location); | |
| 384 _recordUriFileReference(node); | |
| 385 super.visitPartDirective(node); | |
| 386 } | |
| 387 | |
| 388 @override | |
| 389 visitPartOfDirective(PartOfDirective node) { | |
| 390 LocationImpl location = _createLocationForNode(node.libraryName); | |
| 391 recordRelationshipElement( | |
| 392 node.element, IndexConstants.IS_REFERENCED_BY, location); | |
| 393 } | |
| 394 | |
| 395 @override | |
| 396 visitPostfixExpression(PostfixExpression node) { | |
| 397 _recordOperatorReference(node.operator, node.bestElement); | |
| 398 super.visitPostfixExpression(node); | |
| 399 } | |
| 400 | |
| 401 @override | |
| 402 visitPrefixExpression(PrefixExpression node) { | |
| 403 _recordOperatorReference(node.operator, node.bestElement); | |
| 404 super.visitPrefixExpression(node); | |
| 405 } | |
| 406 | |
| 407 @override | |
| 408 visitRedirectingConstructorInvocation(RedirectingConstructorInvocation node) { | |
| 409 ConstructorElement element = node.staticElement; | |
| 410 LocationImpl location; | |
| 411 if (node.constructorName != null) { | |
| 412 int start = node.period.offset; | |
| 413 int end = node.constructorName.end; | |
| 414 location = _createLocationForOffset(start, end - start); | |
| 415 } else { | |
| 416 int start = node.thisKeyword.end; | |
| 417 location = _createLocationForOffset(start, 0); | |
| 418 } | |
| 419 recordRelationshipElement( | |
| 420 element, IndexConstants.IS_REFERENCED_BY, location); | |
| 421 super.visitRedirectingConstructorInvocation(node); | |
| 422 } | |
| 423 | |
| 424 @override | |
| 425 visitSimpleIdentifier(SimpleIdentifier node) { | |
| 426 IndexableName indexableName = new IndexableName(node.name); | |
| 427 LocationImpl location = _createLocationForNode(node); | |
| 428 if (location == null) { | |
| 429 return; | |
| 430 } | |
| 431 // name in declaration | |
| 432 if (node.inDeclarationContext()) { | |
| 433 recordRelationshipIndexable( | |
| 434 indexableName, IndexConstants.NAME_IS_DEFINED_BY, location); | |
| 435 return; | |
| 436 } | |
| 437 // prepare information | |
| 438 Element element = node.bestElement; | |
| 439 // stop if already handled | |
| 440 if (_isAlreadyHandledName(node)) { | |
| 441 return; | |
| 442 } | |
| 443 // record name read/write | |
| 444 if (element != null && element.enclosingElement is ClassElement || | |
| 445 element == null && location.isQualified) { | |
| 446 bool inGetterContext = node.inGetterContext(); | |
| 447 bool inSetterContext = node.inSetterContext(); | |
| 448 if (inGetterContext && inSetterContext) { | |
| 449 recordRelationshipIndexable( | |
| 450 indexableName, IndexConstants.IS_READ_WRITTEN_BY, location); | |
| 451 } else if (inGetterContext) { | |
| 452 recordRelationshipIndexable( | |
| 453 indexableName, IndexConstants.IS_READ_BY, location); | |
| 454 } else if (inSetterContext) { | |
| 455 recordRelationshipIndexable( | |
| 456 indexableName, IndexConstants.IS_WRITTEN_BY, location); | |
| 457 } | |
| 458 } | |
| 459 // this.field parameter | |
| 460 if (element is FieldFormalParameterElement) { | |
| 461 RelationshipImpl relationship = peekElement().element == element | |
| 462 ? IndexConstants.IS_WRITTEN_BY | |
| 463 : IndexConstants.IS_REFERENCED_BY; | |
| 464 recordRelationshipElement(element.field, relationship, location); | |
| 465 return; | |
| 466 } | |
| 467 // record specific relations | |
| 468 if (element is ClassElement || | |
| 469 element is FunctionElement || | |
| 470 element is FunctionTypeAliasElement || | |
| 471 element is LabelElement || | |
| 472 element is MethodElement || | |
| 473 element is PropertyAccessorElement || | |
| 474 element is PropertyInducingElement || | |
| 475 element is TypeParameterElement) { | |
| 476 recordRelationshipElement( | |
| 477 element, IndexConstants.IS_REFERENCED_BY, location); | |
| 478 } else if (element is PrefixElement) { | |
| 479 recordRelationshipElement( | |
| 480 element, IndexConstants.IS_REFERENCED_BY, location); | |
| 481 _recordImportElementReferenceWithPrefix(node); | |
| 482 } else if (element is ParameterElement || element is LocalVariableElement) { | |
| 483 bool inGetterContext = node.inGetterContext(); | |
| 484 bool inSetterContext = node.inSetterContext(); | |
| 485 if (inGetterContext && inSetterContext) { | |
| 486 recordRelationshipElement( | |
| 487 element, IndexConstants.IS_READ_WRITTEN_BY, location); | |
| 488 } else if (inGetterContext) { | |
| 489 recordRelationshipElement(element, IndexConstants.IS_READ_BY, location); | |
| 490 } else if (inSetterContext) { | |
| 491 recordRelationshipElement( | |
| 492 element, IndexConstants.IS_WRITTEN_BY, location); | |
| 493 } else { | |
| 494 recordRelationshipElement( | |
| 495 element, IndexConstants.IS_REFERENCED_BY, location); | |
| 496 } | |
| 497 } | |
| 498 _recordImportElementReferenceWithoutPrefix(node); | |
| 499 super.visitSimpleIdentifier(node); | |
| 500 } | |
| 501 | |
| 502 @override | |
| 503 visitSuperConstructorInvocation(SuperConstructorInvocation node) { | |
| 504 ConstructorElement element = node.staticElement; | |
| 505 LocationImpl location; | |
| 506 if (node.constructorName != null) { | |
| 507 int start = node.period.offset; | |
| 508 int end = node.constructorName.end; | |
| 509 location = _createLocationForOffset(start, end - start); | |
| 510 } else { | |
| 511 int start = node.superKeyword.end; | |
| 512 location = _createLocationForOffset(start, 0); | |
| 513 } | |
| 514 recordRelationshipElement( | |
| 515 element, IndexConstants.IS_REFERENCED_BY, location); | |
| 516 super.visitSuperConstructorInvocation(node); | |
| 517 } | |
| 518 | |
| 519 @override | |
| 520 visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) { | |
| 521 VariableDeclarationList variables = node.variables; | |
| 522 for (VariableDeclaration variableDeclaration in variables.variables) { | |
| 523 Element element = variableDeclaration.element; | |
| 524 _recordTopLevelElementDefinition(element); | |
| 525 } | |
| 526 super.visitTopLevelVariableDeclaration(node); | |
| 527 } | |
| 528 | |
| 529 @override | |
| 530 visitTypeParameter(TypeParameter node) { | |
| 531 TypeParameterElement element = node.element; | |
| 532 enterScope(element); | |
| 533 try { | |
| 534 super.visitTypeParameter(node); | |
| 535 } finally { | |
| 536 _exitScope(); | |
| 537 } | |
| 538 } | |
| 539 | |
| 540 @override | |
| 541 visitVariableDeclaration(VariableDeclaration node) { | |
| 542 VariableElement element = node.element; | |
| 543 // record declaration | |
| 544 { | |
| 545 SimpleIdentifier name = node.name; | |
| 546 LocationImpl location = _createLocationForNode(name); | |
| 547 location = _getLocationWithExpressionType(location, node.initializer); | |
| 548 recordRelationshipElement( | |
| 549 element, IndexConstants.NAME_IS_DEFINED_BY, location); | |
| 550 } | |
| 551 // visit | |
| 552 enterScope(element); | |
| 553 try { | |
| 554 super.visitVariableDeclaration(node); | |
| 555 } finally { | |
| 556 _exitScope(); | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 @override | |
| 561 visitVariableDeclarationList(VariableDeclarationList node) { | |
| 562 NodeList<VariableDeclaration> variables = node.variables; | |
| 563 if (variables != null) { | |
| 564 // use first VariableDeclaration as Element for Location(s) in type | |
| 565 { | |
| 566 TypeName type = node.type; | |
| 567 if (type != null) { | |
| 568 for (VariableDeclaration variableDeclaration in variables) { | |
| 569 enterScope(variableDeclaration.element); | |
| 570 try { | |
| 571 type.accept(this); | |
| 572 } finally { | |
| 573 _exitScope(); | |
| 574 } | |
| 575 // only one iteration | |
| 576 break; | |
| 577 } | |
| 578 } | |
| 579 } | |
| 580 // visit variables | |
| 581 variables.accept(this); | |
| 582 } | |
| 583 } | |
| 584 | |
| 585 /** | |
| 586 * @return the [LocationImpl] representing location of the [AstNode]. | |
| 587 */ | |
| 588 LocationImpl _createLocationForNode(AstNode node) { | |
| 589 bool isQualified = _isQualifiedClassMemberAccess(node); | |
| 590 bool isResolved = true; | |
| 591 if (node is SimpleIdentifier) { | |
| 592 isResolved = node.bestElement != null; | |
| 593 } | |
| 594 IndexableObject indexable = peekElement(); | |
| 595 return new LocationImpl(indexable, node.offset, node.length, | |
| 596 isQualified: isQualified, isResolved: isResolved); | |
| 597 } | |
| 598 | |
| 599 /** | |
| 600 * [offset] - the offset of the location within [Source]. | |
| 601 * [length] - the length of the location. | |
| 602 * | |
| 603 * Returns the [LocationImpl] representing the given offset and length within
the | |
| 604 * inner-most [Element]. | |
| 605 */ | |
| 606 LocationImpl _createLocationForOffset(int offset, int length) { | |
| 607 IndexableObject element = peekElement(); | |
| 608 return new LocationImpl(element, offset, length); | |
| 609 } | |
| 610 | |
| 611 /** | |
| 612 * @return the [LocationImpl] representing location of the [Token]. | |
| 613 */ | |
| 614 LocationImpl _createLocationForToken(Token token, bool isResolved) { | |
| 615 IndexableObject element = peekElement(); | |
| 616 return new LocationImpl(element, token.offset, token.length, | |
| 617 isQualified: true, isResolved: isResolved); | |
| 618 } | |
| 619 | |
| 620 /** | |
| 621 * Exit the current scope. | |
| 622 */ | |
| 623 void _exitScope() { | |
| 624 _elementStack.removeFirst(); | |
| 625 } | |
| 626 | |
| 627 /** | |
| 628 * @return `true` if given node already indexed as more interesting reference,
so it should | |
| 629 * not be indexed again. | |
| 630 */ | |
| 631 bool _isAlreadyHandledName(SimpleIdentifier node) { | |
| 632 AstNode parent = node.parent; | |
| 633 if (parent is MethodInvocation) { | |
| 634 return parent.methodName == node; | |
| 635 } | |
| 636 return false; | |
| 637 } | |
| 638 | |
| 639 bool _isQualifiedClassMemberAccess(AstNode node) { | |
| 640 if (node is SimpleIdentifier) { | |
| 641 AstNode parent = node.parent; | |
| 642 if (parent is PrefixedIdentifier && parent.identifier == node) { | |
| 643 return parent.prefix.staticElement is! PrefixElement; | |
| 644 } | |
| 645 if (parent is PropertyAccess && parent.propertyName == node) { | |
| 646 return parent.realTarget != null; | |
| 647 } | |
| 648 if (parent is MethodInvocation && parent.methodName == node) { | |
| 649 Expression target = parent.realTarget; | |
| 650 if (target is SimpleIdentifier && | |
| 651 target.staticElement is PrefixElement) { | |
| 652 return false; | |
| 653 } | |
| 654 return target != null; | |
| 655 } | |
| 656 } | |
| 657 return false; | |
| 658 } | |
| 659 | |
| 660 void _recordHasAncestor(ClassElement element) { | |
| 661 int offset = element.nameOffset; | |
| 662 int length = element.nameLength; | |
| 663 LocationImpl location = _createLocationForOffset(offset, length); | |
| 664 _recordHasAncestor0(location, element, false, <ClassElement>[]); | |
| 665 } | |
| 666 | |
| 667 void _recordHasAncestor0(LocationImpl location, ClassElement element, | |
| 668 bool includeThis, List<ClassElement> visitedElements) { | |
| 669 if (element == null) { | |
| 670 return; | |
| 671 } | |
| 672 if (visitedElements.contains(element)) { | |
| 673 return; | |
| 674 } | |
| 675 visitedElements.add(element); | |
| 676 if (includeThis) { | |
| 677 recordRelationshipElement(element, IndexConstants.HAS_ANCESTOR, location); | |
| 678 } | |
| 679 { | |
| 680 InterfaceType superType = element.supertype; | |
| 681 if (superType != null) { | |
| 682 _recordHasAncestor0(location, superType.element, true, visitedElements); | |
| 683 } | |
| 684 } | |
| 685 for (InterfaceType mixinType in element.mixins) { | |
| 686 _recordHasAncestor0(location, mixinType.element, true, visitedElements); | |
| 687 } | |
| 688 for (InterfaceType implementedType in element.interfaces) { | |
| 689 _recordHasAncestor0( | |
| 690 location, implementedType.element, true, visitedElements); | |
| 691 } | |
| 692 } | |
| 693 | |
| 694 /** | |
| 695 * Records [ImportElement] reference if given [SimpleIdentifier] references so
me | |
| 696 * top-level element and not qualified with import prefix. | |
| 697 */ | |
| 698 void _recordImportElementReferenceWithoutPrefix(SimpleIdentifier node) { | |
| 699 if (_isIdentifierInImportCombinator(node)) { | |
| 700 return; | |
| 701 } | |
| 702 if (_isIdentifierInPrefixedIdentifier(node)) { | |
| 703 return; | |
| 704 } | |
| 705 Element element = node.staticElement; | |
| 706 ImportElement importElement = internal_getImportElement( | |
| 707 _libraryElement, null, element, _importElementsMap); | |
| 708 if (importElement != null) { | |
| 709 LocationImpl location = _createLocationForOffset(node.offset, 0); | |
| 710 recordRelationshipElement( | |
| 711 importElement, IndexConstants.IS_REFERENCED_BY, location); | |
| 712 } | |
| 713 } | |
| 714 | |
| 715 /** | |
| 716 * Records [ImportElement] that declares given prefix and imports library with
element used | |
| 717 * with given prefix node. | |
| 718 */ | |
| 719 void _recordImportElementReferenceWithPrefix(SimpleIdentifier prefixNode) { | |
| 720 ImportElementInfo info = internal_getImportElementInfo(prefixNode); | |
| 721 if (info != null) { | |
| 722 int offset = prefixNode.offset; | |
| 723 int length = info.periodEnd - offset; | |
| 724 LocationImpl location = _createLocationForOffset(offset, length); | |
| 725 recordRelationshipElement( | |
| 726 info.element, IndexConstants.IS_REFERENCED_BY, location); | |
| 727 } | |
| 728 } | |
| 729 | |
| 730 /** | |
| 731 * Records reference to defining [CompilationUnitElement] of the given | |
| 732 * [LibraryElement]. | |
| 733 */ | |
| 734 void _recordLibraryReference(UriBasedDirective node, LibraryElement library) { | |
| 735 if (library != null) { | |
| 736 LocationImpl location = _createLocationForNode(node.uri); | |
| 737 recordRelationshipElement(library.definingCompilationUnit, | |
| 738 IndexConstants.IS_REFERENCED_BY, location); | |
| 739 } | |
| 740 } | |
| 741 | |
| 742 /** | |
| 743 * Record reference to the given operator [Element] and name. | |
| 744 */ | |
| 745 void _recordOperatorReference(Token operator, Element element) { | |
| 746 // prepare location | |
| 747 LocationImpl location = _createLocationForToken(operator, element != null); | |
| 748 // record name reference | |
| 749 { | |
| 750 String name = operator.lexeme; | |
| 751 if (name == "++") { | |
| 752 name = "+"; | |
| 753 } | |
| 754 if (name == "--") { | |
| 755 name = "-"; | |
| 756 } | |
| 757 if (StringUtilities.endsWithChar(name, 0x3D) && name != "==") { | |
| 758 name = name.substring(0, name.length - 1); | |
| 759 } | |
| 760 IndexableName indexableName = new IndexableName(name); | |
| 761 recordRelationshipIndexable( | |
| 762 indexableName, IndexConstants.IS_INVOKED_BY, location); | |
| 763 } | |
| 764 // record element reference | |
| 765 if (element != null) { | |
| 766 recordRelationshipElement( | |
| 767 element, IndexConstants.IS_INVOKED_BY, location); | |
| 768 } | |
| 769 } | |
| 770 | |
| 771 /** | |
| 772 * Records a relation between [superNode] and its [Element]. | |
| 773 */ | |
| 774 void _recordSuperType(TypeName superNode, RelationshipImpl relationship) { | |
| 775 if (superNode != null) { | |
| 776 Identifier superName = superNode.name; | |
| 777 if (superName != null) { | |
| 778 Element superElement = superName.staticElement; | |
| 779 recordRelationshipElement( | |
| 780 superElement, relationship, _createLocationForNode(superNode)); | |
| 781 } | |
| 782 } | |
| 783 } | |
| 784 | |
| 785 /** | |
| 786 * Records the [Element] definition in the library and universe. | |
| 787 */ | |
| 788 void _recordTopLevelElementDefinition(Element element) { | |
| 789 if (element != null) { | |
| 790 IndexableElement indexable = new IndexableElement(element); | |
| 791 int offset = element.nameOffset; | |
| 792 int length = element.nameLength; | |
| 793 LocationImpl location = new LocationImpl(indexable, offset, length); | |
| 794 recordRelationshipElement( | |
| 795 _libraryElement, IndexConstants.DEFINES, location); | |
| 796 _store.recordTopLevelDeclaration(element); | |
| 797 } | |
| 798 } | |
| 799 | |
| 800 void _recordUriFileReference(UriBasedDirective directive) { | |
| 801 Source source = directive.source; | |
| 802 if (source != null) { | |
| 803 LocationImpl location = new LocationImpl( | |
| 804 new IndexableFile(_unitElement.source.fullName), | |
| 805 directive.uri.offset, | |
| 806 directive.uri.length); | |
| 807 _store.recordRelationship(new IndexableFile(source.fullName), | |
| 808 IndexConstants.IS_REFERENCED_BY, location); | |
| 809 } | |
| 810 } | |
| 811 | |
| 812 /** | |
| 813 * If the given expression has resolved type, returns the new location with th
is type. | |
| 814 * | |
| 815 * [location] - the base location | |
| 816 * [expression] - the expression assigned at the given location | |
| 817 */ | |
| 818 static LocationImpl _getLocationWithExpressionType( | |
| 819 LocationImpl location, Expression expression) { | |
| 820 if (expression != null) { | |
| 821 return new LocationWithData<DartType>(location, expression.bestType); | |
| 822 } | |
| 823 return location; | |
| 824 } | |
| 825 | |
| 826 /** | |
| 827 * @return `true` if given "node" is part of an import [Combinator]. | |
| 828 */ | |
| 829 static bool _isIdentifierInImportCombinator(SimpleIdentifier node) { | |
| 830 AstNode parent = node.parent; | |
| 831 return parent is Combinator; | |
| 832 } | |
| 833 | |
| 834 /** | |
| 835 * @return `true` if given "node" is part of [PrefixedIdentifier] "prefix.node
". | |
| 836 */ | |
| 837 static bool _isIdentifierInPrefixedIdentifier(SimpleIdentifier node) { | |
| 838 AstNode parent = node.parent; | |
| 839 return parent is PrefixedIdentifier && parent.identifier == node; | |
| 840 } | |
| 841 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1801883002:
Remove old index and search implementations. (Closed)
Base URL: git@github.com:dart-lang/sdk.git@master