兼容FISLib初版

FlutterCodeGenerator.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -6,6 +6,12 @@
   </PropertyGroup>
 
 	<ItemGroup>
+		<None Update="FISLib.dll">
+		  <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+		</None>
+		<None Update="rpcForUSMachine.txt">
+		  <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+		</None>
 		<None Update="WingInterfaceLibrary.dll">
 			<CopyToOutputDirectory>Always</CopyToOutputDirectory>
 		</None>

Helper/CodeGeneratorForFISLib.cs

@@ -0,0 +1,177 @@
+using FlutterCodeGenerator.Map;
+using FlutterCodeGenerator.Map.Interface;
+using FlutterCodeGenerator.Model;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+
+namespace FlutterCodeGenerator.Helper
+{
+    public class CodeGeneratorForFISLib
+    {
+        private const string FisLibDllName = "FISLib.dll";
+        private const string USMachineFolder = "fis_lib_usMachine_jsonrpc";
+        private const string ServicePrefix = "fis";
+
+        private readonly string _generatedFolderPathForUS;
+        private readonly string _dllPath;
+        private readonly string _rpcTextPath;
+        private readonly string _serviceFolderPath;
+        private readonly Dictionary<string, IServiceMap> _serviceMapDictionary;
+        private readonly List<string> _generatedServiceFileNameList;
+        private readonly List<string> _generatedServiceModelFileNameList;
+
+        public CodeGeneratorForFISLib(string dllPath, string filePath)
+        {
+            GenerateDataCache.Instance.CurrentGenerator = EnumCodeGenerator.FISLib.ToString();
+            _generatedFolderPathForUS = Path.Combine(filePath, USMachineFolder);
+            _dllPath = dllPath;
+            _serviceFolderPath = Path.Combine(_generatedFolderPathForUS, "services");
+            _rpcTextPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "rpc.txt");
+            _serviceMapDictionary = new Dictionary<string, IServiceMap>();
+            _generatedServiceFileNameList = new List<string>();
+            _generatedServiceModelFileNameList = new List<string>();
+            LoadDll();
+            GenerateDataCache.Instance.IsLoadFinished = true;
+        }
+
+        private void LoadDll()
+        {
+            var dll = Directory.GetFiles(_dllPath, FisLibDllName).FirstOrDefault();
+            if (dll == null)
+            {
+                throw new DllNotFoundException($"The {FisLibDllName} is not found!");
+            }
+            var assemblybytes = File.ReadAllBytes(dll);
+            var assembly = Assembly.Load(assemblybytes);
+            var allTypes = assembly.GetTypes();
+            var interfaceTypes = allTypes.Where(x => x.IsInterface && x.FullName.EndsWith("Service") && x.Name.StartsWith("I") && x.Name != "IService" && !x.Name.Contains("Notification")).ToList();
+            foreach (var interfaceType in interfaceTypes)
+            {
+                var sericeName = ServicePrefix + interfaceType.Name[1..];
+                var serviceMap = new ServiceMap(interfaceType, ServicePrefix);
+                _serviceMapDictionary.Add(LetterConverterHelper.FirstCharToLower(sericeName), serviceMap);
+            }
+        }
+
+        private void CheckDirectory()
+        {
+            if (Directory.Exists(_generatedFolderPathForUS))
+            {
+                Directory.Delete(_generatedFolderPathForUS, true);
+            }
+            Directory.CreateDirectory(_generatedFolderPathForUS);
+            Directory.CreateDirectory(_serviceFolderPath);
+        }
+
+        public void GeneratedCode()
+        {
+            CheckDirectory();
+            foreach (var serviceMap in _serviceMapDictionary)
+            {
+                GenerateDataCache.Instance.CurrentService = serviceMap.Value.ServiceName;
+                var serviceDartFileName = serviceMap.Key[0..^7] + ".dart";
+                var serviceModelDartFileName = serviceMap.Key[0..^7] + ".m.dart";
+                var serviceDartPath = Path.Combine(_serviceFolderPath, serviceDartFileName);
+                var serviceModelDartPath = Path.Combine(_serviceFolderPath, serviceModelDartFileName);
+                var serviceModelDartString = serviceMap.Value.GetServiceModelDartString();
+                var serviceString = serviceMap.Value.GetServiceDartString();
+                if (serviceMap.Value is ServiceMap)
+                {
+                    var serviceDartString = new StringBuilder();
+                    serviceDartString.AppendLine(CommonParameters.StringDartCore);
+                    serviceDartString.AppendLine();
+                    serviceDartString.AppendLine(CommonParameters.StringClientBase);
+                    if (serviceString.Contains("FJsonConvert"))
+                    {
+                        serviceDartString.AppendLine(CommonParameters.StringJsonConvert);
+                    }
+                    serviceDartString.AppendLine();
+                    if (serviceModelDartString != null)
+                    {
+                        File.WriteAllText(serviceModelDartPath, serviceModelDartString);
+                        serviceDartString.AppendLine($"import '{serviceModelDartFileName}';");
+                        _generatedServiceModelFileNameList.Add(serviceModelDartFileName);
+                    }
+                    serviceDartString.AppendLine();
+                    serviceDartString.AppendLine(serviceString);
+                    File.WriteAllText(serviceDartPath, serviceDartString.ToString());
+                    _generatedServiceFileNameList.Add(serviceDartFileName);
+                }
+                else if (serviceMap.Value is NotificationServiceMap notificationServiceMap)
+                {
+                    if (serviceModelDartString != null)
+                    {
+                        File.WriteAllText(serviceModelDartPath, serviceModelDartString);
+                        _generatedServiceModelFileNameList.Add(serviceModelDartFileName);
+                    }
+                    var decodeDartString = notificationServiceMap.GetDecodeDartString();
+                    if (decodeDartString != null)
+                    {
+                        var decodeDartFileName = "notificationdecoder.dart";
+                        var decodeDartPath = Path.Combine(_serviceFolderPath, decodeDartFileName);
+                        File.WriteAllText(decodeDartPath, decodeDartString);
+                        _generatedServiceFileNameList.Add(decodeDartFileName);
+                    }
+                }
+                else if (serviceMap.Value is OtherServiceMap)
+                {
+                    if (serviceModelDartString != null)
+                    {
+                        File.WriteAllText(serviceModelDartPath, serviceModelDartString);
+                        _generatedServiceModelFileNameList.Add(serviceModelDartFileName);
+                    }
+                }
+            }
+            GenerateIndexDart();
+            GenerateRpcDart();
+            GenerateDataCache.Instance.IsGenerateFinished = true;
+        }
+
+        private void GenerateRpcDart()
+        {
+            var dartString = new StringBuilder();
+            var rpcFilePath = Path.Combine(_generatedFolderPathForUS, CommonParameters.RpcDart);
+            var rpcString = File.ReadAllText(_rpcTextPath);
+            var tempStringArray = rpcString.Split("*******Separator******");
+            if (tempStringArray.Length != 2)
+            {
+                throw new Exception("The rpc text is Wrong!");
+            }
+            dartString.AppendLine(tempStringArray[0]);
+            foreach (var serviceMap in _serviceMapDictionary)
+            {
+                GenerateDataCache.Instance.CurrentService = serviceMap.Value.ServiceName;
+                if (serviceMap.Value is ServiceMap)
+                {
+                    var serviceName = LetterConverterHelper.FirstCharToUpper_2(serviceMap.Key);
+                    var actionName = serviceMap.Key[0..^7];
+                    dartString.AppendLine($"\t{serviceName} get {actionName} =>");
+                    dartString.AppendLine($"\tfindService(() => new {serviceName}(currentHostAddress));");
+                    dartString.AppendLine();
+                }
+            }
+            dartString.AppendLine(tempStringArray[1]);
+            File.WriteAllText(rpcFilePath, dartString.ToString());
+        }
+
+        private void GenerateIndexDart()
+        {
+            var dartString = new StringBuilder();
+            var indexFilePath = Path.Combine(_serviceFolderPath, CommonParameters.IndexDart);
+
+            foreach (var fileName in _generatedServiceFileNameList.OrderBy(x => x))
+            {
+                dartString.AppendLine($"export '{fileName}';");
+            }
+            foreach (var fileName in _generatedServiceModelFileNameList.OrderBy(x => x))
+            {
+                dartString.AppendLine($"export '{fileName}';");
+            }
+            File.WriteAllText(indexFilePath, dartString.ToString());
+        }
+    }
+}

Helper/CodeGenerator.cs → Helper/CodeGeneratorForWing.cs

@@ -10,29 +10,25 @@ using System.Text;
 
 namespace FlutterCodeGenerator.Helper
 {
-    public class CodeGenerator
+    public class CodeGeneratorForWing
     {
-        private readonly string _generatedFolderPath;
+        private const string WingDllName = "WingInterfaceLibrary.dll";
+        private const string FlyinsonoFolder = "fis_lib_jsonrpc";
+
+        private readonly string _generatedFolderPathForFlyinsono;
         private readonly string _dllPath;
         private readonly string _rpcTextPath;
         private readonly string _serviceFolderPath;
-        private const string _dllName = "WingInterfaceLibrary.dll";
-        private readonly string _indexDart = "index.dart";
-        private readonly string _rpcDart = "rpc.dart";
-        private Dictionary<string, IServiceMap> _serviceMapDictionary;
-        private List<string> _generatedServiceFileNameList;
-        private List<string> _generatedServiceModelFileNameList;
-
-        public static readonly string StringDartCore = "import 'dart:core';";
-        public static readonly string StringClientBase = "import 'package:fis_jsonrpc/client_base.dart';";
-        public static readonly string StringJsonConvert = "import 'package:fis_common/json_convert.dart';";
-        public static readonly string StringUtils = "import 'package:fis_jsonrpc/utils.dart';";
+        private readonly Dictionary<string, IServiceMap> _serviceMapDictionary;
+        private readonly List<string> _generatedServiceFileNameList;
+        private readonly List<string> _generatedServiceModelFileNameList;
 
-        public CodeGenerator(string dllPath, string filePath)
+        public CodeGeneratorForWing(string dllPath, string filePath)
         {
-            _generatedFolderPath = filePath;
+            GenerateDataCache.Instance.CurrentGenerator = EnumCodeGenerator.Wing.ToString();
+            _generatedFolderPathForFlyinsono = Path.Combine(filePath, FlyinsonoFolder);
             _dllPath = dllPath;
-            _serviceFolderPath = Path.Combine(_generatedFolderPath, "services");
+            _serviceFolderPath = Path.Combine(_generatedFolderPathForFlyinsono, "services");
             _rpcTextPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "rpc.txt");
             _serviceMapDictionary = new Dictionary<string, IServiceMap>();
             _generatedServiceFileNameList = new List<string>() { "platform.dart" };
@@ -43,10 +39,10 @@ namespace FlutterCodeGenerator.Helper
 
         private void LoadDll()
         {
-            var dll = Directory.GetFiles(_dllPath, _dllName).FirstOrDefault();
+            var dll = Directory.GetFiles(_dllPath, WingDllName).FirstOrDefault();
             if (dll == null)
             {
-                throw new Exception($"The {_dllName} is not found!");
+                throw new DllNotFoundException($"The {WingDllName} is not found!");
             }
             var assemblybytes = File.ReadAllBytes(dll);
             var assembly = Assembly.Load(assemblybytes);
@@ -68,7 +64,7 @@ namespace FlutterCodeGenerator.Helper
             foreach (var interfaceType in interfaceTypes)
             {
                 var sericeName = interfaceType.Name[1..];
-                var serviceMap = new ServiceMap(interfaceType);
+                var serviceMap = new ServiceMap(interfaceType, null);
                 _serviceMapDictionary.Add(LetterConverterHelper.FirstCharToLower(sericeName), serviceMap);
             }
             var otherServiceMap = new OtherServiceMap(restNeedGeneratedTypes);
@@ -77,11 +73,11 @@ namespace FlutterCodeGenerator.Helper
 
         private void CheckDirectory()
         {
-            if (Directory.Exists(_generatedFolderPath))
+            if (Directory.Exists(_generatedFolderPathForFlyinsono))
             {
-                Directory.Delete(_generatedFolderPath, true);
+                Directory.Delete(_generatedFolderPathForFlyinsono, true);
             }
-            Directory.CreateDirectory(_generatedFolderPath);
+            Directory.CreateDirectory(_generatedFolderPathForFlyinsono);
             Directory.CreateDirectory(_serviceFolderPath);
         }
 
@@ -100,12 +96,12 @@ namespace FlutterCodeGenerator.Helper
                 if (serviceMap.Value is ServiceMap)
                 {
                     var serviceDartString = new StringBuilder();
-                    serviceDartString.AppendLine(StringDartCore);
+                    serviceDartString.AppendLine(CommonParameters.StringDartCore);
                     serviceDartString.AppendLine();
-                    serviceDartString.AppendLine(StringClientBase);
+                    serviceDartString.AppendLine(CommonParameters.StringClientBase);
                     if (serviceString.Contains("FJsonConvert"))
                     {
-                        serviceDartString.AppendLine(StringJsonConvert);
+                        serviceDartString.AppendLine(CommonParameters.StringJsonConvert);
                     }
                     serviceDartString.AppendLine();
                     if (serviceModelDartString != null)
@@ -152,7 +148,7 @@ namespace FlutterCodeGenerator.Helper
         private void GenerateRpcDart()
         {
             var dartString = new StringBuilder();
-            var rpcFilePath = Path.Combine(_generatedFolderPath, _rpcDart);
+            var rpcFilePath = Path.Combine(_generatedFolderPathForFlyinsono, CommonParameters.RpcDart);
             var rpcString = File.ReadAllText(_rpcTextPath);
             var tempStringArray = rpcString.Split("*******Separator******");
             if (tempStringArray.Length != 2)
@@ -179,7 +175,7 @@ namespace FlutterCodeGenerator.Helper
         private void GenerateIndexDart()
         {
             var dartString = new StringBuilder();
-            var indexFilePath = Path.Combine(_serviceFolderPath, _indexDart);
+            var indexFilePath = Path.Combine(_serviceFolderPath, CommonParameters.IndexDart);
 
             foreach (var fileName in _generatedServiceFileNameList.OrderBy(x => x))
             {

Helper/CommonParameters.cs

@@ -0,0 +1,12 @@
+namespace FlutterCodeGenerator.Helper
+{
+    internal class CommonParameters
+    {
+        internal const string StringDartCore = "import 'dart:core';";
+        internal const string StringClientBase = "import 'package:fis_jsonrpc/client_base.dart';";
+        internal const string StringJsonConvert = "import 'package:fis_common/json_convert.dart';";
+        internal const string StringUtils = "import 'package:fis_jsonrpc/utils.dart';";
+        internal const string IndexDart = "index.dart";
+        internal const string RpcDart = "rpc.dart";
+    }
+}

Map/NotificationServiceMap.cs

@@ -89,13 +89,13 @@ namespace FlutterCodeGenerator.Map
             var dartStringInfo = dartString.ToString();
             if (dartStringInfo.Contains("JsonRpcUtils"))
             {
-                serviceModelDartString.AppendLine(CodeGenerator.StringUtils);
+                serviceModelDartString.AppendLine(CommonParameters.StringUtils);
                 serviceModelDartString.AppendLine();
             }
 
             if (dartStringInfo.Contains("FJsonConvert"))
             {
-                serviceModelDartString.AppendLine(CodeGenerator.StringJsonConvert);
+                serviceModelDartString.AppendLine(CommonParameters.StringJsonConvert);
                 serviceModelDartString.AppendLine();
             }
             serviceModelDartString.AppendLine(dartStringInfo);

Map/OtherServiceMap.cs

@@ -99,13 +99,13 @@ namespace FlutterCodeGenerator.Map
             var dartStringInfo = dartString.ToString();
             if (dartStringInfo.Contains("JsonRpcUtils"))
             {
-                serviceModelDartString.AppendLine(CodeGenerator.StringUtils);
+                serviceModelDartString.AppendLine(CommonParameters.StringUtils);
                 serviceModelDartString.AppendLine();
             }
 
             if (dartStringInfo.Contains("FJsonConvert"))
             {
-                serviceModelDartString.AppendLine(CodeGenerator.StringJsonConvert);
+                serviceModelDartString.AppendLine(CommonParameters.StringJsonConvert);
                 serviceModelDartString.AppendLine();
             }
             serviceModelDartString.AppendLine(dartStringInfo);

Map/ServiceMap.cs

@@ -5,6 +5,7 @@ using FlutterCodeGenerator.ModelTypes;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
 using System.Text;
 
 namespace FlutterCodeGenerator.Map
@@ -18,13 +19,29 @@ namespace FlutterCodeGenerator.Map
 
         public List<ComplexModelType> UsedComplexModelTypeList { get; }
 
-        public ServiceMap(Type type)
+        public ServiceMap(Type type, string prefix)
         {
-            ServiceName = type.Name[1..];
+            if (string.IsNullOrEmpty(prefix))
+            {
+                ServiceName = type.Name[1..];
+            }
+            else
+            {
+                ServiceName = prefix + type.Name[1..];
+            }
             UsedComplexModelTypeList = new List<ComplexModelType>();
             GenerateDataCache.Instance.SetCurrentServiceMap(this);
             _methodMapList = new List<MethodMap>();
-            var methodsList = type.GetMethods().Where(x => !x.IsSpecialName).ToList();
+            var methodsList = type.GetMethods().ToList();
+            var eventList = type.GetEvents().ToList();
+            var eventMethodList = new List<MethodInfo>();
+            foreach (var eventType in eventList)
+            {
+                eventMethodList.Add(eventType.RemoveMethod);
+                eventMethodList.Add(eventType.AddMethod);
+            }
+            methodsList = methodsList.Where(x => !eventMethodList.Contains(x)).ToList();//将Event的Method屏蔽
+            methodsList = methodsList.Where(x => !x.CustomAttributes.Any(y => y.AttributeType.FullName == "FISLib.FISAttribute" && y.ConstructorArguments.FirstOrDefault().ArgumentType == typeof(string) && (string)y.ConstructorArguments.FirstOrDefault().Value == "FlutterIgnored")).ToList();//将FISAttribue为FlutterIgnore的屏蔽
             foreach (var method in methodsList)
             {
                 var methodMap = new MethodMap(method);
@@ -74,13 +91,13 @@ namespace FlutterCodeGenerator.Map
             var dartStringInfo = dartString.ToString();
             if (dartStringInfo.Contains("JsonRpcUtils"))
             {
-                serviceModelDartString.AppendLine(CodeGenerator.StringUtils);
+                serviceModelDartString.AppendLine(CommonParameters.StringUtils);
                 serviceModelDartString.AppendLine();
             }
 
             if (dartStringInfo.Contains("FJsonConvert"))
             {
-                serviceModelDartString.AppendLine(CodeGenerator.StringJsonConvert);
+                serviceModelDartString.AppendLine(CommonParameters.StringJsonConvert);
                 serviceModelDartString.AppendLine();
             }
             serviceModelDartString.AppendLine(dartStringInfo);

Model/EnumCodeGenerator.cs

@@ -0,0 +1,8 @@
+namespace FlutterCodeGenerator.Model
+{
+    internal enum EnumCodeGenerator
+    {
+        Wing,
+        FISLib
+    }
+}

Model/GenerateDataCache.cs

@@ -26,6 +26,8 @@ namespace FlutterCodeGenerator.Model
 
         public bool IsGenerateFinished { get; set; }
 
+        public string CurrentGenerator { get; set; }
+
         public GenerateDataCache()
         {
             AlreadyGeneratedList = new Dictionary<ComplexModelType, string>();

Program.cs

@@ -22,13 +22,15 @@ namespace FlutterCodeGenerator
                 {
                     throw new ArgumentException("The argments are invalid！");
                 }
-                var codeGenerator = new CodeGenerator(dllPath, generatedFolderPath);
-                codeGenerator.GeneratedCode();
+                var codeGeneratorForWing = new CodeGeneratorForWing(dllPath, generatedFolderPath);
+                codeGeneratorForWing.GeneratedCode();
+                var codeGeneratorForFISLib = new CodeGeneratorForFISLib(dllPath, generatedFolderPath);
+                codeGeneratorForFISLib.GeneratedCode();
                 Console.WriteLine($"The code has already generated! The path is {generatedFolderPath}");
             }
             catch (Exception ex)
             {
-                Console.WriteLine($"An Error occured when generated!!! Service:{GenerateDataCache.Instance.CurrentService},Method:{GenerateDataCache.Instance.CurrentMethod},Parameter:{GenerateDataCache.Instance.CurrentParameter},IsLoadFinished:{GenerateDataCache.Instance.IsLoadFinished},IsGenerateFinished:{GenerateDataCache.Instance.IsGenerateFinished} Error Message : {ex}");
+                Console.WriteLine($"An Error occured when generated!!!CodeGenerator:{GenerateDataCache.Instance.CurrentGenerator}, Service:{GenerateDataCache.Instance.CurrentService},Method:{GenerateDataCache.Instance.CurrentMethod},Parameter:{GenerateDataCache.Instance.CurrentParameter},IsLoadFinished:{GenerateDataCache.Instance.IsLoadFinished},IsGenerateFinished:{GenerateDataCache.Instance.IsGenerateFinished} Error Message : {ex}");
             }
             Console.ReadLine();
         }

README.md

@@ -10,5 +10,7 @@
 
 #### 可输入参数：
 ##### string[] args：
-1. WingInterfaceLibrary.dll的路径，默认为当前目录；
-2. Flutter代码的生成路径，默认为当前目录下GeneratedCode文件夹。
+1. WingInterfaceLibrary.dll以及FISLib.dll的路径，默认为当前目录；
+2. Flutter代码的生成路径，默认为当前目录下GeneratedCode文件夹。
+注: GeneratedCode\fis_lib_jsonrpc为WingInterfaceLibrary.dll的生成目录，供杏聆荟及超声机的Flutter端使用。
+    GeneratedCode\fis_lib_usMachine_jsonrpc为FISLib.dll的生成目录，供超声机的Flutter端使用。

rpcForUSMachine.txt

@@ -0,0 +1,80 @@
+library fis_jsonrpc;
+
+import 'dart:collection';
+
+import 'package:fis_common/extensions/type.dart';
+import 'package:fis_common/logger/logger.dart';
+
+import 'client_base.dart';
+import 'interceptor.dart';
+import 'services/index.dart';
+
+export 'services/index.dart';
+export 'request.dart';
+export 'exception.dart';
+export 'interceptor.dart';
+export 'notifications/index.dart';
+
+typedef T ServiceBuilder<T extends JsonRpcClientBase>();
+
+const C_SHELL_RPC_DEFAULT_HOST = 'platform.fis.plus';
+
+/// JSON-RPC 代理
+class JsonRpcProxy {
+  JsonRpcProxy({
+    String? host,
+    this.platformHost = C_SHELL_RPC_DEFAULT_HOST,
+  }) {
+    _currentHost = host ?? "unknown";
+  }
+
+  /// 宿主平台代理地址
+  final String platformHost;
+
+  /// 服务主机地址
+  late String _currentHost;
+
+  /// 服务主机协议
+  late String _currentProtocol;
+
+  /// 当前服务主机地址
+  String get currentHostAddress => "$_currentProtocol://$_currentHost";
+
+  HashMap<Type, dynamic> _serviceCache = HashMap();
+
+  static PlatformService? _platformService;
+
+  /* 服务代理设置 Start */
+
+  /// 平台服务
+  PlatformService get platform {
+    if (_platformService == null)
+      _platformService = PlatformService("http://$platformHost", timeout: 15000);
+    return _platformService!;
+  }
+*******Separator******
+  /* 服务代理设置 End */
+
+  /// 设置服务主机地址
+  void setServerHost(String address, [bool useSSL = false]) {
+    logger.i('JsonRpcProxy setServerHost :' + address);
+    _currentProtocol = useSSL ? "https" : "http";
+    _currentHost = address;
+  }
+
+  /// 添加拦截器
+  void addInterceptor(JsonRpcInterceptor interceptor) =>
+      jsonRpcInterceptHost.addInterceptor(interceptor);
+
+  /// 清空缓存
+  void clearCache() => _serviceCache.clear();
+
+  /// 查找Service实例
+  T findService<T extends JsonRpcClientBase>(ServiceBuilder<T> builder) {
+    Type serviceType = typeOf<T>();
+    if (!_serviceCache.containsKey(serviceType)) {
+      _serviceCache[serviceType] = builder.call();
+    }
+    return _serviceCache[serviceType] as T;
+  }
+}