XPathExpression.cs

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using System.Collections;
using MS.Internal.Xml.XPath;
 
namespace System.Xml.XPath;
 
public abstract class XPathExpression
{
    public abstract string Expression { get; }
 
    public abstract XPathResultType ReturnType { get; }
 
    internal XPathExpression()
    {
    }
 
    public abstract void AddSort(object expr, IComparer comparer);
 
    public abstract void AddSort(object expr, XmlSortOrder order, XmlCaseOrder caseOrder, string lang, XmlDataType dataType);
 
    public abstract XPathExpression Clone();
 
    public abstract void SetContext(XmlNamespaceManager nsManager);
 
    public abstract void SetContext(IXmlNamespaceResolver? nsResolver);
 
    public static XPathExpression Compile(string xpath)
    {
        return Compile(xpath, null);
    }
 
    public static XPathExpression Compile(string xpath, IXmlNamespaceResolver? nsResolver)
    {
        bool needContext;
        Query query = new QueryBuilder().Build(xpath, out needContext);
        CompiledXpathExpr compiledXpathExpr = new CompiledXpathExpr(query, xpath, needContext);
        if (nsResolver != null)
        {
            compiledXpathExpr.SetContext(nsResolver);
        }
        return compiledXpathExpr;
    }
}