public static bool IsIgnorable <T>(JsonFieldIgnorableAttribute f, T o)
{
if (f == null)
{
return(false);
}
// Value
if (Object.Equals(o, f.WhenValueIs))
{
return(true);
}
// Length
var a = o as Array;
if (a != null)
{
return(a.Length == f.WhenLengthIs);
}
var l = o as IList;
if (l != null)
{
return(l.Count == f.WhenLengthIs);
}
// Others
return(false);
}
private static IEnumerable <KeyValuePair <RankedKey, object> > ToRankedKeyValuesUnordered(object o)
{
var ty = o.GetType();
if (TypeWrap(ty).IsGenericType&& ty.GetGenericTypeDefinition() == typeof(Dictionary <,>))
{
var keyType = TypeWrap(ty).GetGenericArguments()[0];
if (keyType != typeof(string))
{
// TODO: Should allow them and call `ToString`?
throw new NotImplementedException();
}
foreach (DictionaryEntry elem in (IDictionary)o)
{
yield return(new KeyValuePair <RankedKey, object>(
new RankedKey {
Order = 0, // Dictionary has no order infomation
Key = (string)elem.Key,
},
elem.Value));
}
}
else
{
var fields = TypeWrap(ty).GetFields();
foreach (var field in fields)
{
var fieldAttr = GetCustomAttribute <JsonFieldAttribute>(field);
// TODO: duplication check
var elemName = JsonFieldAttribute.FieldName(fieldAttr, field);
var elemValue = field.GetValue(o);
var fieldIgnoreAttr = GetCustomAttribute <JsonFieldIgnorableAttribute>(field);
if (JsonFieldIgnorableAttribute.IsIgnorable(fieldIgnoreAttr, elemValue))
{
continue;
}
yield return(new KeyValuePair <RankedKey, object>(
new RankedKey {
Order = JsonFieldAttribute.FieldOrder(fieldAttr),
Key = elemName,
},
elemValue));
}
}
}