blob: 55986c9f4df044d9d3dc932f0aeb1ef6573d6889 [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 ConvertToIfNull extends CorrectionProducer {
@override
FixKind get fixKind => DartFixKind.CONVERT_TO_IF_NULL;
@override
Future<void> compute(ChangeBuilder builder) async {
var node = this.node;
if (node is ConditionalExpression &&
node.offset == errorOffset &&
node.length == errorLength) {
var condition = node.condition as BinaryExpression;
Expression nullableExpression;
Expression defaultExpression;
if (condition.operator.type == TokenType.EQ_EQ) {
nullableExpression = node.elseExpression;
defaultExpression = node.thenExpression;
} else {
nullableExpression = node.thenExpression;
defaultExpression = node.elseExpression;
}
await builder.addDartFileEdit(file, (builder) {
builder.addReplacement(range.node(node), (builder) {
builder.write(utils.getNodeText(nullableExpression));
builder.write(' ?? ');
builder.write(utils.getNodeText(defaultExpression));
});
});
}
}
/// Return an instance of this class. Used as a tear-off in `FixProcessor`.
static ConvertToIfNull newInstance() => ConvertToIfNull();
}