private static ComponentRegistration <TService> UsingFactoryMethod <TService>(ComponentRegistration <TService> registration, Microsoft.Extensions.DependencyInjection.ServiceDescriptor service) where TService : class
{
return(registration.UsingFactoryMethod((kernel) => {
var serviceProvider = kernel.Resolve <System.IServiceProvider>();
return service.ImplementationFactory(serviceProvider) as TService;
}));
}
private static object GetInstance(this IServiceProvider provider, ServiceDescriptor descriptor)
{
if (descriptor.ImplementationInstance != null)
{
return(descriptor.ImplementationInstance);
}
if (descriptor.ImplementationType != null)
{
return(provider.GetServiceOrCreateInstance(descriptor.ImplementationType));
}
return(descriptor.ImplementationFactory(provider));
}
static object CreateInstance(this IServiceProvider services, ServiceDescriptor descriptor)
{
if (descriptor.ImplementationInstance != null)
{
return(descriptor.ImplementationInstance);
}
if (descriptor.ImplementationFactory != null)
{
return(descriptor.ImplementationFactory(services));
}
return(ActivatorUtilities.GetServiceOrCreateInstance(services, descriptor.ImplementationType));
}
private static void RegisterTransientDescriptor(IDependencyRegistrator container, ServiceDescriptor descriptor)
{
if (descriptor.ImplementationType != null)
{
container.Register(descriptor.ServiceType, descriptor.ImplementationType);
}
else if (descriptor.ImplementationFactory != null)
{
container.Register(descriptor.ServiceType, context => context
.WithFactory(c => descriptor.ImplementationFactory(c.Resolve <IServiceProvider>())));
}
else
{
container.RegisterInstance(descriptor.ServiceType, descriptor.ImplementationInstance);
}
}
private static Func <IServiceProvider, object> CreateServiceFromDescriptor(ServiceDescriptor serviceDescriptor)
{
if (serviceDescriptor.ImplementationInstance != null)
{
return((s) => serviceDescriptor.ImplementationInstance);
}
if (serviceDescriptor.ImplementationFactory != null)
{
return((s) => serviceDescriptor.ImplementationFactory(s));
}
var serviceConstructor = serviceDescriptor.ImplementationType.GetConstructors()[0];
var createServiceDelegate = ConstructCreateObjectDelegate(serviceConstructor);
return((s) =>
{
var args = ResolveConstructorParams(serviceConstructor, s);
return createServiceDelegate.Invoke(args);
});
}
