public static Maybe <TypeDescriptor> FindTypeDescriptorAndSibling(
string name,
IEnumerable <OptionSpecification> specifications,
StringComparer comparer)
{
var info =
specifications.SingleOrDefault(a => name.MatchName(a.ShortName, a.LongName, comparer))
.ToMaybe()
.Map(
first =>
{
var descr = TypeDescriptor.Create(first.TargetType, first.Max);
var next = specifications
.SkipWhile(s => s.Equals(first)).Take(1)
.SingleOrDefault(x => x.IsValue()).ToMaybe()
.Map(second => TypeDescriptor.Create(second.TargetType, second.Max));
return(descr.WithNextValue(next));
});
return(info);
}
public static TypeDescriptor WithNextValue(this TypeDescriptor descriptor, Maybe <TypeDescriptor> nextValue)
{
return(TypeDescriptor.Create(descriptor.TargetType, descriptor.MaxItems, nextValue.GetValueOrDefault(default(TypeDescriptor))));
}
public static TypeDescriptor WithNextValue(this TypeDescriptor descriptor, Maybe <TypeDescriptor> nextValue)
{
return(TypeDescriptor.Create(descriptor.TargetType, descriptor.MaxItems, nextValue.Return(n => n, null)));
}
