| // Copyright (c) 2020, 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:analysis_server/src/services/correction/dart/abstract_producer.dart'; |
| import 'package:analysis_server/src/services/correction/fix.dart'; |
| import 'package:analyzer/dart/ast/ast.dart'; |
| import 'package:analyzer/dart/ast/token.dart'; |
| import 'package:analyzer_plugin/utilities/change_builder/change_builder_core.dart'; |
| import 'package:analyzer_plugin/utilities/fixes/fixes.dart'; |
| import 'package:analyzer_plugin/utilities/range_factory.dart'; |
| |
| class UesIsNotEmpty extends CorrectionProducer { |
| @override |
| FixKind get fixKind => DartFixKind.USE_IS_NOT_EMPTY; |
| |
| @override |
| Future<void> compute(ChangeBuilder builder) async { |
| if (node is! PrefixExpression) { |
| return; |
| } |
| PrefixExpression prefixExpression = node; |
| var negation = prefixExpression.operator; |
| if (negation.type != TokenType.BANG) { |
| return; |
| } |
| SimpleIdentifier identifier; |
| var expression = prefixExpression.operand; |
| if (expression is PrefixedIdentifier) { |
| identifier = expression.identifier; |
| } else if (expression is PropertyAccess) { |
| identifier = expression.propertyName; |
| } else { |
| return; |
| } |
| await builder.addDartFileEdit(file, (builder) { |
| builder.addDeletion(range.token(negation)); |
| builder.addSimpleReplacement(range.node(identifier), 'isNotEmpty'); |
| }); |
| } |
| |
| /// Return an instance of this class. Used as a tear-off in `FixProcessor`. |
| static UesIsNotEmpty newInstance() => UesIsNotEmpty(); |
| } |