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

   1 //------------------------------------------------------------------------------
   2 // <copyright file="AbsoluteQuery.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">[....]</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     using System.Globalization;
  14
  15     internal sealed class AbsoluteQuery : ContextQuery {
  16         public  AbsoluteQuery()                    : base() {}
  17         private AbsoluteQuery(AbsoluteQuery other) : base(other) {}
  18
  19         public override object Evaluate(XPathNodeIterator context) {
  20             base.contextNode = context.Current.Clone();
  21             base.contextNode.MoveToRoot();
  22             count = 0;
  23             return this;
  24         }
  25
  26         public override XPathNavigator MatchNode(XPathNavigator context) {
  27             if (context != null && context.NodeType == XPathNodeType.Root) {
  28                 return context;
  29             }
  30             return null;
  31         }
  32
  33         public override XPathNodeIterator Clone() { return new AbsoluteQuery(this); }
  34     }
  35 }