protected override Expression VisitMember(MemberExpression node)
{
if (_flag)
{
var propertyPath = new PropertyPathVisitor(node, false).GetPropertyPath();
var ifNotContainPath = Properties.FirstOrDefault(s => s.StartsWith(propertyPath)) == null;
if (ifNotContainPath)
{
if (Properties.Count > 0)
{
var element = Properties.ElementAt(Properties.Count - 1);
if (_underlyingRootType != null && _underlyingRootType.IsValidPropertyPath(element) == false)
{
propertyPath = $"{propertyPath}{CollectionSuffix}.{element}";
Properties.Remove(element);
}
//else if (_underlyingRootType != null && _underlyingRootType.IsValidPropertyPath(propertyPath) == false)
//{
// //throw new NotSupportedException(string.Format("This expression is not supported: {0}", UnderlyingExpression ?? node));
//}
}
Properties.Add(propertyPath);
}
}
return(base.VisitMember(node));
}
public static HashSet <string> GetAllPropertiesPaths(this Expression expression, string collectionSuffix = null)
{
if (expression == null)
{
return(null);
}
var visitor = new PropertyPathVisitor {
CollectionSuffix = collectionSuffix
};
visitor.Visit(expression);
return(visitor.Properties);
}