protected override object OnDeserializing(JToken jToken)
{
// allow base class to notify event handlers (if any) to pre-process the JSON value.
var value = base.OnDeserializing(jToken);
var collection = value as ICollection;
if (value == null)
{
if (jToken.Type == JTokenType.Array)
{
OptionValueParser.ThrowInvalidValueIf(jToken.Any(i => i.Type != JTokenType.String), jToken, this);
collection = jToken.Select(i => i.Value <string>()).ToList();
}
else if (jToken.Type == JTokenType.String)
{
// allow for a single-value list to be represented with a string.
collection = new List <string>()
{
jToken.Value <string>()
};
}
}
OptionValueParser.ThrowInvalidValueIf(collection == null, jToken, this);
foreach (var item in collection)
{
this.InnerList.Add(OptionValueParser.ParseValue <TValue>(item, this));
}
// ensure the underlying value is the inner list.
return(this.InnerList);
}
protected override object OnValueChanging(object value)
{
// allow any event handler to pre-process the value.
value = base.OnValueChanging(value);
if (value != null)
{
// ensure the value is of the right type.
value = OptionValueParser.ParseValue <TValue>(value, this);
}
return(value);
}
protected override object OnValueChanging(object value)
{
// allow base class to notify event handlers (if any) to pre-process the value.
value = base.OnValueChanging(value);
// a null value means, the value is being removed.
if (value != null)
{
// ensure the value is of the right type.
value = OptionValueParser.ParseValue <TValue>(value, this);
}
return(value);
}
protected override object OnDeserializing(JToken jToken)
{
// allow base class to notify event handlers (if any) to pre-process the JSON value.
var value = base.OnDeserializing(jToken);
if (value == null)
{
value = jToken.Value <string>();
}
// ensure the value is of the right type.
value = OptionValueParser.ParseValue <TValue>(value, this);
return(value);
}
/// <summary>
/// Core method for setting the option and/or adding values to the collection.
/// Setting the value has the same semantics as when the option is specified in the command line, when specified multiple times
/// it is equivalent to having a collection of values not a collection of options and the operation is Add instead of SetValue.
/// </summary>
protected override void SetValue(object value)
{
if (value == null)
{
this.InnerList.Clear();
}
else
{
if (value is IList <TValue> list)
{
this.InnerList.AddRange(list);
}
else
{
this.InnerList.Add(OptionValueParser.ParseValue <TValue>(value, this));
}
}
}
int IList.Add(object value)
{
this.Add(OptionValueParser.ParseValue <TValue>(value, this.Owner));
return(this.Count - 1);
}
