AstNode.cs

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using System.Xml.XPath;
 
namespace MS.Internal.Xml.XPath;
 
internal abstract class AstNode
{
    public enum AstType
    {
        Axis,
        Operator,
        Filter,
        ConstantOperand,
        Function,
        Group,
        Root,
        Variable,
        Error
    }
 
    public abstract AstType Type { get; }
 
    public abstract XPathResultType ReturnType { get; }
}