bool CanHandle(ObjectRequestedEventArgs args, out OpenGenericRegistrationData registrationData, out Type[] genericArgs)
{
genericArgs = null;
registrationData = null;
var contractType = args.ContractType;
if (!contractType.IsGenericType)
{
return(false);
}
var openGenericContractType = contractType.GetGenericTypeDefinition();
if (openGenericContractType == null)
{
throw new ImpossibleException();
}
if (!_openContract2OpenConcrete.TryGetValue(openGenericContractType, out registrationData))
{
return(false);
}
// check the generic constraints???
genericArgs = contractType.GetGenericArguments();
return(true);
}
static RegistrationProvider CreateRegistrationProvider(ObjectRequestedEventArgs args, OpenGenericRegistrationData registrationData, Type[] genericArgs)
{
var registrationProviderType =
typeof(ReflectionOrEmitRegistrationProvider <>).MakeGenericType(args.ContractType);
TypedRegistrationProvider provider;
try
{
var objProvider = Activator.CreateInstance(registrationProviderType, args.Kernel);
provider = objProvider as TypedRegistrationProvider;
if (provider == null)
{
throw new ImpossibleException();
}
}
catch (TargetInvocationException ex)
{
throw ex.InnerException;
}
provider.ActivatorKind = registrationData.ActivatorKind;
provider.ContractType = registrationData.OpenGenericContractType.MakeGenericType(genericArgs);
provider.ConcreteType = registrationData.OpenGenericConcreteType.MakeGenericType(genericArgs);
if (registrationData.ConstructorSelector != null)
{
provider.ConstructorSelector = registrationData.ConstructorSelector;
}
if (registrationData.ConfiguredParameters != null)
{
provider.ConfiguredParameters = registrationData.ConfiguredParameters;
}
if (registrationData.LifetimeProvider != null)
{
provider.LifetimeProvider = registrationData.LifetimeProvider;
}
return(provider);
}
static void RegisterNewService(ObjectRequestedEventArgs args, OpenGenericRegistrationData registrationData, Type[] genericArgs)
{
var provider = CreateRegistrationProvider(args, registrationData, genericArgs);
args.Register(provider);
}
public void Add(OpenGenericRegistrationData registrationData)
{
// Throw when the OpenGenericContractType already exists
_openContract2OpenConcrete.Add(registrationData.OpenGenericContractType, registrationData);
}