private static void ReplaceWithGenericTypeModel(Type requestedType, ref InjectionModel existingModel)
{
var typeArgs = requestedType.GetGenericArguments();
var genericType = existingModel.Type.MakeGenericType(typeArgs);
var(_, deliveryMode, instance, speckName, configuration) = existingModel;
existingModel = new InjectionModel(genericType, deliveryMode, instance, speckName, configuration);
}
internal static object InstantiateSpeck(Type requestedType, InjectionModel existingModel, Func <Type, bool> hasSpeck, Func <Type, string, object> getSpeck, Func <ParameterInfo, bool> hasConfiguration, string configurationName)
{
object instantiatedSpeck = null;
Exception innerException = null;
var isGenericTypeRequired = (requestedType != existingModel.Type) && (requestedType.IsGenericType && existingModel.Type.IsGenericType);
if (isGenericTypeRequired)
{
ReplaceWithGenericTypeModel(requestedType, ref existingModel);
}
var constructors = existingModel
.Type
.GetConstructors()
.OrderByDescending(x => x.GetParameters().Count());
foreach (var constructor in constructors)
{
var instantiatedParameters = constructor
.GetParameters()
.Where(p => hasSpeck(p.ParameterType) || hasConfiguration(p))
.Select(p => getSpeck(p.ParameterType, p.GetCustomAttribute <SpeckyConfigurationAttribute>()?.ConfigurationName ?? configurationName))
.ToArray();
try
{
instantiatedSpeck = Activator.CreateInstance(existingModel.Type, instantiatedParameters);
break;
}
catch (Exception exception)
{
innerException = new Exception(exception.Message, innerException);
}
}
return(instantiatedSpeck
?? throw new Exception($"Could not instantiate {existingModel.Type.Name}", innerException));
}