| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import '../../base/file_system.dart'; |
| import '../../base/project_migrator.dart'; |
| import '../../xcode_project.dart'; |
| |
| const String _appDelegateFileBefore = r''' |
| @UIApplicationMain |
| @objc class AppDelegate'''; |
| |
| const String _appDelegateFileAfter = r''' |
| @main |
| @objc class AppDelegate'''; |
| |
| /// Replace the deprecated `@UIApplicationMain` attribute with `@main`. |
| /// |
| /// See: |
| /// https://github.com/apple/swift-evolution/blob/main/proposals/0383-deprecate-uiapplicationmain-and-nsapplicationmain.md |
| class UIApplicationMainDeprecationMigration extends ProjectMigrator { |
| UIApplicationMainDeprecationMigration( |
| IosProject project, |
| super.logger, |
| ) : _appDelegateSwift = project.appDelegateSwift; |
| |
| final File _appDelegateSwift; |
| |
| @override |
| Future<void> migrate() async { |
| // Skip this migration if the project uses Objective-C. |
| if (!_appDelegateSwift.existsSync()) { |
| logger.printTrace( |
| 'ios/Runner/AppDelegate.swift not found, skipping @main migration.', |
| ); |
| return; |
| } |
| |
| // Migrate the ios/Runner/AppDelegate.swift file. |
| final String original = _appDelegateSwift.readAsStringSync(); |
| final String migrated = original.replaceFirst(_appDelegateFileBefore, _appDelegateFileAfter); |
| if (original == migrated) { |
| return; |
| } |
| |
| logger.printWarning( |
| 'ios/Runner/AppDelegate.swift uses the deprecated @UIApplicationMain attribute, updating.', |
| ); |
| _appDelegateSwift.writeAsStringSync(migrated); |
| } |
| } |