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//------------------------------------------------------------------------------
// <copyright file="ForwardPositionQuery.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
//------------------------------------------------------------------------------
namespace MS.Internal.Xml.XPath {
using System;
using System.Xml;
using System.Xml.XPath;
using System.Diagnostics;
internal class ForwardPositionQuery : CacheOutputQuery {
public ForwardPositionQuery(Query input) : base(input) {
Debug.Assert(input != null);
}
protected ForwardPositionQuery(ForwardPositionQuery other) : base(other) { }
public override object Evaluate(XPathNodeIterator context) {
base.Evaluate(context);
XPathNavigator node;
while ((node = base.input.Advance()) != null) {
outputBuffer.Add(node.Clone());
}
return this;
}
public override XPathNavigator MatchNode(XPathNavigator context) {
return input.MatchNode(context);
}
public override XPathNodeIterator Clone() { return new ForwardPositionQuery(this); }
}
}
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