protected override object Create(MarkupExtensionParts parameter)
{
var type = DetermineType(parameter);
var candidates = parameter.Arguments.Select(Get)
.ToArray();
var constructor = DetermineConstructor(parameter, candidates, type);
var members = _members.Get(type);
var evaluator = new PropertyEvaluator(type, members.ToDictionary(x => x.Name), this);
var dictionary = parameter.Properties.ToDictionary(x => x.Key, evaluator.Get);
var arguments = constructor.GetParameters()
.Select(x => x.ParameterType.GetTypeInfo())
.Zip(candidates, (info, evaluation) => evaluation.Get(info))
.ToArray();
var activator = new ConstructedActivator(constructor, arguments);
var context = new MemberContext(constructor.ReflectedType.GetTypeInfo(), members);
var extension = new ActivationContexts(_accessors, context, activator, _defaults)
.Get(dictionary)
.Get()
.AsValid <IMarkupExtension>();
var result = extension.ProvideValue(new Provider(_provider, _services.Appending(parameter)
.ToArray()));
return(result);
}
ActivationContextActivator Activator(ConstructorInfo constructor, ImmutableArray <IMember> members)
{
var activator = new Source(constructor).ToDelegate();
var contexts = new ActivationContexts(_accessors, members, activator);
var defaults = constructor.GetParameters()
.Where(x => x.IsOptional)
.Select(x => Pairs.Create(x.Name, x.DefaultValue))
.ToImmutableArray();
var result = new ActivationContextActivator(contexts, defaults);
return(result);
}
