public static Term Load(XmlReader reader)
{
_ = reader ?? throw new ArgumentNullException(nameof(reader));
Term evalExp = null;
reader.MoveToStartElement();
if (reader.IsRequiredStartElement(AuthorizationConstants.Elements.Rule))
{
Rule rule = new Rule();
rule.ReadXml(reader);
evalExp = rule;
}
if (reader.IsRequiredStartElement(AuthorizationConstants.Elements.LogicalAnd))
{
LogicalAndCollection logicalAnd = new LogicalAndCollection();
logicalAnd.ReadXml(reader);
evalExp = logicalAnd;
}
if (reader.IsRequiredStartElement(AuthorizationConstants.Elements.LogicalOr))
{
LogicalOrCollection logicalOr = new LogicalOrCollection();
logicalOr.ReadXml(reader);
evalExp = logicalOr;
}
if (evalExp != null)
{
return(evalExp);
}
throw new SerializationException("Invalid evaluation expression element.");
}