| // Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'package:analyzer/dart/ast/ast.dart'; |
| import 'package:analyzer/src/dart/resolver/lexical_lookup.dart'; |
| import 'package:analyzer/src/generated/resolver.dart'; |
| |
| /// Class containing static methods for resolving identifiers as implicit |
| /// property gets/sets on the type of `this`. |
| class ThisLookup { |
| /// Do not construct |
| ThisLookup._() { |
| assert(false, 'Do not construct instances of LexicalLookup'); |
| } |
| |
| /// Attempts to resolve an identifier with name [id] via implicit `this.`, |
| /// assuming we are trying to look up a getter. If a matching element is |
| /// found, a [LexicalLookupResult] is returned. Otherwise `null` is returned. |
| static LexicalLookupResult? lookupGetter( |
| ResolverVisitor resolver, SimpleIdentifier node) { |
| var id = node.name; |
| var thisType = resolver.thisType; |
| if (thisType == null) { |
| return null; |
| } |
| |
| var propertyResult = resolver.typePropertyResolver.resolve( |
| receiver: null, |
| receiverType: thisType, |
| name: id, |
| propertyErrorEntity: node, |
| nameErrorEntity: node, |
| ); |
| |
| var callFunctionType = propertyResult.callFunctionType; |
| if (callFunctionType != null) { |
| return LexicalLookupResult( |
| callFunctionType: callFunctionType, |
| ); |
| } |
| |
| var recordField = propertyResult.recordField; |
| if (recordField != null) { |
| return LexicalLookupResult( |
| recordField: recordField, |
| ); |
| } |
| |
| var getterElement = propertyResult.getter; |
| if (getterElement != null) { |
| return LexicalLookupResult(requested: getterElement); |
| } else { |
| return LexicalLookupResult(recovery: propertyResult.setter); |
| } |
| } |
| |
| /// Attempts to resolve an identifier with name [id] via implicit `this.`, |
| /// assuming we are trying to look up a setter. If a matching element is |
| /// found, a [LexicalLookupResult] is returned. Otherwise `null` is returned. |
| static LexicalLookupResult? lookupSetter( |
| ResolverVisitor resolver, SimpleIdentifier node) { |
| var id = node.name; |
| var thisType = resolver.thisType; |
| if (thisType == null) { |
| return null; |
| } |
| |
| var propertyResult = resolver.typePropertyResolver.resolve( |
| receiver: null, |
| receiverType: thisType, |
| name: id, |
| propertyErrorEntity: node, |
| nameErrorEntity: node, |
| ); |
| |
| var setterElement = propertyResult.setter; |
| if (setterElement != null) { |
| return LexicalLookupResult(requested: setterElement); |
| } else { |
| return LexicalLookupResult(recovery: propertyResult.getter); |
| } |
| } |
| } |