protected ServiceProviderEngine(IEnumerable <ServiceDescriptor> serviceDescriptors, IServiceProviderEngineCallback callback) { _createServiceAccessor = CreateServiceAccessor; _callback = callback; Root = new ServiceProviderEngineScope(this); RuntimeResolver = new CallSiteRuntimeResolver(); CallSiteFactory = new CallSiteFactory(serviceDescriptors); CallSiteFactory.Add(typeof(IServiceProvider), new ServiceProviderCallSite()); CallSiteFactory.Add(typeof(IServiceScopeFactory), new ServiceScopeFactoryCallSite()); RealizedServices = new ConcurrentDictionary <Type, Func <ServiceProviderEngineScope, object> >(); }
internal object GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope) { if (_disposed) { ThrowHelper.ThrowObjectDisposedException(); } var realizedService = RealizedServices.GetOrAdd(serviceType, _createServiceAccessor); _callback?.OnResolve(serviceType, serviceProviderEngineScope); return(realizedService.Invoke(serviceProviderEngineScope)); }