/// <summary>
/// Tries to deserialize an object from an XElement.
/// </summary>
/// <param name="element"></param>
/// <param name="t"></param>
/// <param name="setter"></param>
/// <param name="newobj"></param>
/// <param name="logWarnings">Whether warning messages should be emitted in case of missing properties.</param>
/// <returns>True on success.</returns>
public virtual bool TryDeserializeObject(XElement element, ITypeData t, Action <object> setter, object newobj = null, bool logWarnings = true)
{
if (element.IsEmpty && !element.HasAttributes)
{
setter(null);
return(true);
}
if (newobj == null)
{
try
{
newobj = t.CreateInstance(Array.Empty <object>());
t = TypeData.GetTypeData(newobj);
}
catch (TargetInvocationException ex)
{
if (ex.InnerException is System.ComponentModel.LicenseException)
{
throw new Exception(string.Format("Could not create an instance of '{0}': {1}", t.GetAttribute <DisplayAttribute>().Name, ex.InnerException.Message));
}
else
{
ExceptionDispatchInfo.Capture(ex.InnerException).Throw();
}
}
}
var prevobj = Object;
Object = newobj;
var t2 = t;
if (newobj == null)
{
throw new ArgumentNullException(nameof(newobj));
}
var properties = t2.GetMembers()
.Where(x => x.HasAttribute <XmlIgnoreAttribute>() == false)
.ToArray();
try
{
foreach (var prop in properties)
{
var attr = prop.GetAttribute <XmlAttributeAttribute>();
if (attr == null)
{
continue;
}
var name = string.IsNullOrWhiteSpace(attr.AttributeName) ? prop.Name : attr.AttributeName;
var attr_value = element.Attribute(XmlConvert.EncodeLocalName(name));
var p = prop as MemberData;
if (p != null && attr_value != null && p.Member is PropertyInfo csprop)
{
try
{
readContentInternal(csprop.PropertyType, false, () => attr_value.Value, element, out object value);
p.SetValue(newobj, value);
}
catch (Exception e)
{
if (logWarnings)
{
Log.Warning(element, "Attribute value '{0}' was not read correctly as a {1}", attr_value.Value, p);
Log.Debug(e);
}
}
}
}
if (properties.FirstOrDefault(x => x.HasAttribute <XmlTextAttribute>()) is IMemberData mem2)
{
object value;
if (mem2.TypeDescriptor is TypeData td &&
readContentInternal(td.Load(), false, () => element.Value, element, out object _value))
{
value = _value;
}
else
{
value = StringConvertProvider.FromString(element.Value, mem2.TypeDescriptor, null);
}
mem2.SetValue(newobj, value);
}
else
{
var props = properties.ToLookup(x => x.GetAttributes <XmlElementAttribute>().FirstOrDefault()?.ElementName ?? x.Name);
var elements = element.Elements().ToArray();
bool[] visited = new bool[elements.Length];
double order = 0;
int foundWithCurrentType = 0;
while (true)
{
double nextOrder = 1000;
// since the object might be dynamically adding properties as other props are added.
// we need to iterate a bit. Example: Test Plan Reference.
int found = visited.Count(x => x);
for (int i = 0; i < elements.Length; i++)
{
var element2 = elements[i];
if (visited[i])
{
continue;
}
if (element2.Attribute(IgnoreMemberXName) is XAttribute attr && attr.Value == "true")
{
visited[i] = true;
continue;
}
IMemberData property = null;
var name = XmlConvert.DecodeName(element2.Name.LocalName);
var propertyMatches = props[name];
int hits = 0;
foreach (var p in propertyMatches)
{
if (p.Writable || p.HasAttribute <XmlIgnoreAttribute>())
{
property = p;
hits++;
}
}
if (0 == hits)
{
try
{
if (property == null)
{
property = t2.GetMember(name);
}
if (property == null)
{
property = t2.GetMembers().FirstOrDefault(x => x.Name == name);
}
}
catch { }
if (property == null || property.Writable == false)
{
continue;
}
hits = 1;
}
if (hits > 1)
{
Log.Warning(element2, "Multiple properties named '{0}' are available to the serializer in '{1}' this might give issues in serialization.", element2.Name.LocalName, t.GetAttribute <DisplayAttribute>().Name);
}
if (property.GetAttribute <DeserializeOrderAttribute>() is DeserializeOrderAttribute orderAttr)
{
if (order < orderAttr.Order)
{
if (orderAttr.Order < nextOrder)
{
nextOrder = orderAttr.Order;
}
continue;
}
}
else
{
nextOrder = order;
}
visited[i] = true;
var prev = CurrentMember;
CurrentMember = property;
try
{
if (CurrentMember.HasAttribute <XmlIgnoreAttribute>()) // This property shouldn't have been in the file in the first place, but in case it is (because of a change or a bug), we shouldn't try to set it. (E.g. SweepLoopRange.SweepStep)
{
if (!CurrentMember.HasAttribute <BrowsableAttribute>()) // In the special case we assume that this is some compatibility property that still needs to be set if present in the XML. (E.g. TestPlanReference.DynamicDataContents)
{
continue;
}
}
if (property is MemberData mem && mem.Member is PropertyInfo Property && Property.PropertyType.HasInterface <IList>() && Property.PropertyType.IsGenericType && Property.HasAttribute <XmlElementAttribute>())
{
// Special case to mimic old .NET XmlSerializer behavior
var list = (IList)Property.GetValue(newobj);
Action <object> setValue = x => list.Add(x);
Serializer.Deserialize(element2, setValue, Property.PropertyType.GetGenericArguments().First());
}
else
{
Action <object> setValue = x =>
{
var current = property.GetValue(newobj);
property.SetValue(newobj, x);
if (false == Equals(current, x))
{ // for some value-like type, it may be needed
// to set the parent object when a property is changed
// example: complex test plan parameters.
setter(newobj);
}
};
Serializer.Deserialize(element2, setValue, property.TypeDescriptor);
}
}
