mcs/class/referencesource/System.Xml/System/Xml/XPath/Internal/XPathSelfQuery.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="XPathSelfQuery.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">Microsoft</owner>
   6 //------------------------------------------------------------------------------
   7
   8 namespace MS.Internal.Xml.XPath {
   9     using System;
  10     using System.Xml;
  11     using System.Xml.XPath;
  12     using System.Diagnostics;
  13
  14     internal sealed class XPathSelfQuery : BaseAxisQuery {
  15         public XPathSelfQuery(Query qyInput, string Name, string Prefix, XPathNodeType Type) : base(qyInput, Name, Prefix, Type) {}
  16         private XPathSelfQuery(XPathSelfQuery other) : base(other) { }
  17
  18         public override XPathNavigator Advance() {
  19             while ((currentNode = qyInput.Advance()) != null) {
  20                 if (matches(currentNode)) {
  21                     position = 1;
  22                     return currentNode;
  23                 }
  24             }
  25             return null;
  26         }
  27
  28         public override XPathNodeIterator Clone() { return new XPathSelfQuery(this); }
  29     }
  30 }