68 lines
2.5 KiB
C#
68 lines
2.5 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="ChildrenQuery.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">[....]</owner>
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//------------------------------------------------------------------------------
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namespace MS.Internal.Xml.XPath {
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using System;
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using System.Xml;
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using System.Xml.XPath;
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using System.Diagnostics;
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using System.Globalization;
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using System.Xml.Xsl;
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using System.Collections;
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internal class ChildrenQuery : BaseAxisQuery {
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XPathNodeIterator iterator = XPathEmptyIterator.Instance;
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public ChildrenQuery(Query qyInput, string name, string prefix, XPathNodeType type) : base (qyInput, name, prefix, type) {}
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protected ChildrenQuery(ChildrenQuery other) : base(other) {
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this.iterator = Clone(other.iterator);
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}
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public override void Reset() {
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iterator = XPathEmptyIterator.Instance;
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base.Reset();
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}
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public override XPathNavigator Advance() {
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while (!iterator.MoveNext()) {
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XPathNavigator input = qyInput.Advance();
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if (input == null) {
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return null;
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}
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if (NameTest) {
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if (TypeTest == XPathNodeType.ProcessingInstruction) {
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iterator = new IteratorFilter(input.SelectChildren(TypeTest), Name);
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} else {
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iterator = input.SelectChildren(Name, Namespace);
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}
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} else {
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iterator = input.SelectChildren(TypeTest);
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}
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position = 0;
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}
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position ++;
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currentNode = iterator.Current;
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return currentNode;
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} // Advance
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public sealed override XPathNavigator MatchNode(XPathNavigator context) {
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if (context != null) {
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if (matches(context)) {
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XPathNavigator temp = context.Clone();
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if (temp.NodeType != XPathNodeType.Attribute && temp.MoveToParent()) {
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return qyInput.MatchNode(temp);
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}
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return null;
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}
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}
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return null;
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}
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public override XPathNodeIterator Clone() { return new ChildrenQuery(this); }
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}
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}
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