public static OptionSpecification WithLongName(this OptionSpecification specification, string newLongName)
{
return(new OptionSpecification(
specification.ShortName,
newLongName,
specification.Required,
specification.SetName,
specification.Min,
specification.Max,
specification.DefaultValue,
specification.ConversionType,
specification.HelpText,
specification.MetaValue));
}
public static Specification FromProperty(PropertyInfo property)
{
var attrs = property.GetCustomAttributes(true);
var oa = attrs.OfType <OptionAttribute>();
if (oa.Count() == 1)
{
var spec = OptionSpecification.FromAttribute(oa.Single(), property.PropertyType);
if (spec.ShortName.Length == 0 && spec.LongName.Length == 0)
{
return(spec.WithLongName(property.Name.ToLowerInvariant()));
}
return(spec);
}
var va = attrs.OfType <ValueAttribute>();
if (va.Count() == 1)
{
return(ValueSpecification.FromAttribute(va.Single(), property.PropertyType));
}
throw new InvalidOperationException();
}