public object Produce(Container container, Registration registration)
{
// try to product via the specific producer
if (registration.ImplementationProducer != null)
{
var cache = GetCachedLifestyle(registration.Lifestyle);
return cache.GetInstance(registration.ImplementationProducer);
}
// otherwise always try and resolve as many parameters as possible
Type resolveType = registration.ImplementationType;
var constructors = resolveType.GetConstructors().OrderByDescending(c => c.GetParameters().Count());
foreach (var constructor in constructors)
{
try
{
return Produce(container, registration, constructor);
}
catch
{
}
}
// if we make it here for some reason it's an error
throw new Exception(string.Format("Could not resolve type {0}", registration.ServiceType.FullName));
}
private object Produce(Container container, Registration registration, ConstructorInfo constructor)
{
var dependencies = constructor.GetParameters();
var cache = GetCachedLifestyle(registration.Lifestyle);
if (dependencies.Count() == 0)
{
return cache.GetInstance(constructor);
}
IList<object> parameters = new List<object>();
foreach (var dependency in dependencies)
{
var paramRegistration = container.GetRegistration(dependency.ParameterType);
parameters.Add(Produce(container, paramRegistration));
}
return cache.GetInstance(constructor, parameters.ToArray());
}