[shared_preferences] Convert macOS to Pigeon (flutter#6914)

* Add Pigeon and update Dart, based on iOS implementation

* Update Swift implementation

* Update Swift tests

* Adjust Dart test and add Pigeon TODOs

* Version bump

* Format

* Update to Pigeon 5.0 for Swift warning fix

packages/shared_preferences/shared_preferences_macos/CHANGELOG.md

@@ -1,5 +1,6 @@
-## NEXT
+## 2.0.5
 
+* Converts platform channel to Pigeon.
 * Updates code for `no_leading_underscores_for_local_identifiers` lint.
 * Updates minimum Flutter version to 2.10.
 

packages/shared_preferences/shared_preferences_macos/example/macos/RunnerTests/RunnerTests.swift

@@ -4,85 +4,55 @@
 
 import FlutterMacOS
 import XCTest
-import shared_preferences_macos
+@testable import shared_preferences_macos
 
 class RunnerTests: XCTestCase {
-  func testHandlesCommitNoOp() throws {
+  func testSetAndGet() throws {
     let plugin = SharedPreferencesPlugin()
-    let call = FlutterMethodCall(methodName: "commit", arguments: nil)
-    var called = false
-    plugin.handle(
-      call,
-      result: { (result: Any?) -> Void in
-        called = true
-        XCTAssert(result as? Bool == true)
-      })
-    XCTAssert(called)
+
+    plugin.setBool(key: "flutter.aBool", value: true)
+    plugin.setDouble(key: "flutter.aDouble", value: 3.14)
+    plugin.setValue(key: "flutter.anInt", value: 42)
+    plugin.setValue(key: "flutter.aString", value: "hello world")
+    plugin.setValue(key: "flutter.aStringList", value: ["hello", "world"])
+
+    let storedValues = plugin.getAll()
+    XCTAssertEqual(storedValues["flutter.aBool"] as? Bool, true)
+    XCTAssertEqual(storedValues["flutter.aDouble"] as! Double, 3.14, accuracy: 0.0001)
+    XCTAssertEqual(storedValues["flutter.anInt"] as? Int, 42)
+    XCTAssertEqual(storedValues["flutter.aString"] as? String, "hello world")
+    XCTAssertEqual(storedValues["flutter.aStringList"] as? Array<String>, ["hello", "world"])
   }
 
-  func testSetAndGet() throws {
+  func testRemove() throws {
     let plugin = SharedPreferencesPlugin()
-    let setCall = FlutterMethodCall(
-      methodName: "setInt",
-      arguments: [
-        "key": "flutter.foo",
-        "value": 42,
-      ])
-    plugin.handle(
-      setCall,
-      result: { (result: Any?) -> Void in
-        XCTAssert(result as? Bool == true)
-      })
+    let testKey = "flutter.foo"
+    plugin.setValue(key: testKey, value: 42)
+
+    // Make sure there is something to remove, so the test can't pass due to a set failure.
+    let preRemovalValues = plugin.getAll()
+    XCTAssertEqual(preRemovalValues[testKey] as? Int, 42)
+
+    // Then verify that removing it works.
+    plugin.remove(key: testKey)
 
-    var value: Int?
-    plugin.handle(
-      FlutterMethodCall(methodName: "getAll", arguments: nil),
-      result: { (result: Any?) -> Void in
-        if let prefs = result as? [String: Any] {
-          value = prefs["flutter.foo"] as? Int
-        }
-      })
-    XCTAssertEqual(value, 42)
+    let finalValues = plugin.getAll()
+    XCTAssertNil(finalValues[testKey] as Any?)
   }
 
   func testClear() throws {
     let plugin = SharedPreferencesPlugin()
-    let setCall = FlutterMethodCall(
-      methodName: "setInt",
-      arguments: [
-        "key": "flutter.foo",
-        "value": 42,
-      ])
-    plugin.handle(setCall, result: { (result: Any?) -> Void in })
+    let testKey = "flutter.foo"
+    plugin.setValue(key: testKey, value: 42)
 
     // Make sure there is something to clear, so the test can't pass due to a set failure.
-    let getCall = FlutterMethodCall(methodName: "getAll", arguments: nil)
-    var value: Int?
-    plugin.handle(
-      getCall,
-      result: { (result: Any?) -> Void in
-        if let prefs = result as? [String: Any] {
-          value = prefs["flutter.foo"] as? Int
-        }
-      })
-    XCTAssertEqual(value, 42)
+    let preRemovalValues = plugin.getAll()
+    XCTAssertEqual(preRemovalValues[testKey] as? Int, 42)
 
-    // Clear the value.
-    plugin.handle(
-      FlutterMethodCall(methodName: "clear", arguments: nil),
-      result: { (result: Any?) -> Void in
-        XCTAssert(result as? Bool == true)
-      })
+    // Then verify that clearing works.
+    plugin.clear()
 
-    // Get the value again, which should clear |value|.
-    plugin.handle(
-      getCall,
-      result: { (result: Any?) -> Void in
-        if let prefs = result as? [String: Any] {
-          value = prefs["flutter.foo"] as? Int
-          XCTAssert(prefs.isEmpty)
-        }
-      })
-    XCTAssertEqual(value, nil)
+    let finalValues = plugin.getAll()
+    XCTAssertNil(finalValues[testKey] as Any?)
   }
 }

packages/shared_preferences/shared_preferences_macos/lib/messages.g.dart

@@ -0,0 +1,157 @@
+// Copyright 2013 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.
+// Autogenerated from Pigeon (v5.0.0), do not edit directly.
+// See also: https://pub.dev/packages/pigeon
+// ignore_for_file: public_member_api_docs, non_constant_identifier_names, avoid_as, unused_import, unnecessary_parenthesis, prefer_null_aware_operators, omit_local_variable_types, unused_shown_name, unnecessary_import
+import 'dart:async';
+import 'dart:typed_data' show Float64List, Int32List, Int64List, Uint8List;
+
+import 'package:flutter/foundation.dart' show ReadBuffer, WriteBuffer;
+import 'package:flutter/services.dart';
+
+class UserDefaultsApi {
+  /// Constructor for [UserDefaultsApi].  The [binaryMessenger] named argument is
+  /// available for dependency injection.  If it is left null, the default
+  /// BinaryMessenger will be used which routes to the host platform.
+  UserDefaultsApi({BinaryMessenger? binaryMessenger})
+      : _binaryMessenger = binaryMessenger;
+  final BinaryMessenger? _binaryMessenger;
+
+  static const MessageCodec<Object?> codec = StandardMessageCodec();
+
+  Future<void> remove(String arg_key) async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.UserDefaultsApi.remove', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(<Object?>[arg_key]) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else {
+      return;
+    }
+  }
+
+  Future<void> setBool(String arg_key, bool arg_value) async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.UserDefaultsApi.setBool', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(<Object?>[arg_key, arg_value]) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else {
+      return;
+    }
+  }
+
+  Future<void> setDouble(String arg_key, double arg_value) async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.UserDefaultsApi.setDouble', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(<Object?>[arg_key, arg_value]) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else {
+      return;
+    }
+  }
+
+  Future<void> setValue(String arg_key, Object arg_value) async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.UserDefaultsApi.setValue', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList =
+        await channel.send(<Object?>[arg_key, arg_value]) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else {
+      return;
+    }
+  }
+
+  Future<Map<String?, Object?>> getAll() async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.UserDefaultsApi.getAll', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList = await channel.send(null) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else if (replyList[0] == null) {
+      throw PlatformException(
+        code: 'null-error',
+        message: 'Host platform returned null value for non-null return value.',
+      );
+    } else {
+      return (replyList[0] as Map<Object?, Object?>?)!.cast<String?, Object?>();
+    }
+  }
+
+  Future<void> clear() async {
+    final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+        'dev.flutter.pigeon.UserDefaultsApi.clear', codec,
+        binaryMessenger: _binaryMessenger);
+    final List<Object?>? replyList = await channel.send(null) as List<Object?>?;
+    if (replyList == null) {
+      throw PlatformException(
+        code: 'channel-error',
+        message: 'Unable to establish connection on channel.',
+      );
+    } else if (replyList.length > 1) {
+      throw PlatformException(
+        code: replyList[0]! as String,
+        message: replyList[1] as String?,
+        details: replyList[2],
+      );
+    } else {
+      return;
+    }
+  }
+}

packages/shared_preferences/shared_preferences_macos/lib/shared_preferences_macos.dart

@@ -2,52 +2,66 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:async';
-
 import 'package:flutter/services.dart';
 import 'package:shared_preferences_platform_interface/shared_preferences_platform_interface.dart';
+import 'messages.g.dart';
 
-const MethodChannel _kChannel =
-    MethodChannel('plugins.flutter.io/shared_preferences_macos');
+typedef _Setter = Future<void> Function(String key, Object value);
 
-/// The macOS implementation of [SharedPreferencesStorePlatform].
-///
-/// This class implements the `package:shared_preferences` functionality for macOS.
+/// macOS implementation of shared_preferences.
 class SharedPreferencesMacOS extends SharedPreferencesStorePlatform {
-  /// Registers this class as the default instance of [SharedPreferencesStorePlatform].
+  final UserDefaultsApi _api = UserDefaultsApi();
+  late final Map<String, _Setter> _setters = <String, _Setter>{
+    'Bool': (String key, Object value) {
+      return _api.setBool(key, value as bool);
+    },
+    'Double': (String key, Object value) {
+      return _api.setDouble(key, value as double);
+    },
+    'Int': (String key, Object value) {
+      return _api.setValue(key, value as int);
+    },
+    'String': (String key, Object value) {
+      return _api.setValue(key, value as String);
+    },
+    'StringList': (String key, Object value) {
+      return _api.setValue(key, value as List<String?>);
+    },
+  };
+
+  /// Registers this class as the default instance of
+  /// [SharedPreferencesStorePlatform].
   static void registerWith() {
     SharedPreferencesStorePlatform.instance = SharedPreferencesMacOS();
   }
 
   @override
-  Future<bool> remove(String key) async {
-    return (await _kChannel.invokeMethod<bool>(
-      'remove',
-      <String, dynamic>{'key': key},
-    ))!;
+  Future<bool> clear() async {
+    await _api.clear();
+    return true;
   }
 
   @override
-  Future<bool> setValue(String valueType, String key, Object value) async {
-    return (await _kChannel.invokeMethod<bool>(
-      'set$valueType',
-      <String, dynamic>{'key': key, 'value': value},
-    ))!;
+  Future<Map<String, Object>> getAll() async {
+    final Map<String?, Object?> result = await _api.getAll();
+    return result.cast<String, Object>();
   }
 
   @override
-  Future<bool> clear() async {
-    return (await _kChannel.invokeMethod<bool>('clear'))!;
+  Future<bool> remove(String key) async {
+    await _api.remove(key);
+    return true;
   }
 
   @override
-  Future<Map<String, Object>> getAll() async {
-    final Map<String, Object>? preferences =
-        await _kChannel.invokeMapMethod<String, Object>('getAll');
-
-    if (preferences == null) {
-      return <String, Object>{};
+  Future<bool> setValue(String valueType, String key, Object value) async {
+    final _Setter? setter = _setters[valueType];
+    if (setter == null) {
+      throw PlatformException(
+          code: 'InvalidOperation',
+          message: '"$valueType" is not a supported type.');
     }
-    return preferences;
+    await setter(key, value);
+    return true;
   }
 }