public bool CanHandle(PropertyInfo info)
{
return info.HasCustomAttribute<MultiSelectAttribute>();
}
private XObject Traverse(Format format, object source, LinkedNode<object> ancestors, PropertyInfo sourceProperty = null, Type itemType = null)
{
var type = itemType ?? (sourceProperty == null ? source.GetType() : sourceProperty.PropertyType);
var name = format == Format.Xml ? GetXmlNodeName(type, ancestors, sourceProperty, itemType) :
GetJsonNodeName(ancestors, sourceProperty, itemType);
Func<object, XElement> createElement = x => new XElement(_options.DefaultNamespace == null || format == Format.Json ?
name : _options.DefaultNamespace + name, x, format == Format.Json ? new XAttribute("type", "object") : null);
Func<string, XObject> createValueNode = x => _options.XmlValueNodeType == XmlValueNodeType.Attribute ||
(sourceProperty != null && sourceProperty.HasCustomAttribute<XmlAttributeAttribute>()) ?
new XAttribute(name, x ?? "") : (XObject)createElement(x);
XObject node;
ValueNode valueNode = null;
if (_options.ValueWriters.ContainsKey(type))
{
node = createValueNode(null);
valueNode = new ValueNode(node, format);
if (format == Format.Json) valueNode.JsonField.DataType = source.ToJsonValueType();
_options.ValueWriters[type](new WriterContext(_options, sourceProperty, source, valueNode));
}
else if (type.IsSimpleType())
{
node = source == null ? createValueNode(null) : createValueNode(source.ToString());
valueNode = new ValueNode(node, format);
if (format == Format.Json) valueNode.JsonField.DataType = source.ToJsonValueType();
}
else if (source == null)
{
node = createElement(null);
valueNode = new ValueNode(node, format);
if (format == Format.Json) valueNode.JsonField.DataType = JsonDataType.Null;
}
else if (type.IsEnumerable())
{
var listItemType = type.GetGenericEnumerableType();
node = createElement(null).WithChildren(source.AsEnumerable().Select(x =>
Traverse(format, x, ancestors.Add(source), sourceProperty, listItemType ?? x.GetType())));
valueNode = new ValueNode(node, format);
if (format == Format.Json) valueNode.JsonField.DataType = JsonDataType.Array;
}
else
{
node = createElement(null);
var properties = type.GetSerializableProperties(_options.ExcludedTypes);
foreach (var property in properties.Where(x => !x.IsIgnored()))
{
var propertyValue = property.GetValue(source, null);
if ((propertyValue == null && _options.ExcludeNullValues) || ancestors.Any(propertyValue)) continue;
((XElement)node).Add(Traverse(format, propertyValue, ancestors.Add(propertyValue), property));
}
}
valueNode = valueNode ?? new ValueNode(node, format);
AddNamespaces(format, ancestors, valueNode);
_options.NodeWriters.ForEach(x => x(new WriterContext(_options, sourceProperty, source, valueNode)));
return valueNode.Object;
}