blob: 39ee83b2ad7285a091c480249800bb27ed0805e7 [file] [log] [blame]
// 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();
}