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));
}
