internal static IEnumerable <Lazy <object> > CheckAndRetrieveCompositionConstructorArgs(IComposer composer, MemberInfo memberInfo)
{
// If the member is not a composition constructor, ignore the member
if (!(memberInfo is ConstructorInfo))
{
return(null);
}
if (!HasCompositionConstructorAttribute((ConstructorInfo)memberInfo))
{
return(null);
}
// Extract parameter information from the member, and set them
// as the parameters of ther constructor for creating the component
var parameterInfos = ((ConstructorInfo)memberInfo).GetParameters();
var compositionConstructorAttribute = GetCompositionConstructorAttribute(memberInfo);
return(parameterInfos.Select((parameterInfo, index) =>
composer.LazyGetComponent(parameterInfo.ParameterType,
compositionConstructorAttribute.Names != null &&
index < compositionConstructorAttribute.Names.Length
? compositionConstructorAttribute.Names[index]
: null)));
}