71 lines
2.5 KiB
C#
71 lines
2.5 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="IDQuery.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">Microsoft</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.Xml.Xsl;
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using System.Diagnostics;
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using System.Collections.Generic;
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internal sealed class IDQuery : CacheOutputQuery {
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public IDQuery(Query arg) : base(arg) {}
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private IDQuery(IDQuery other) : base(other) { }
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public override object Evaluate(XPathNodeIterator context) {
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object argVal = base.Evaluate(context);
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XPathNavigator contextNode = context.Current.Clone();
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switch (GetXPathType(argVal)) {
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case XPathResultType.NodeSet:
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XPathNavigator temp;
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while ((temp = input.Advance()) != null) {
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ProcessIds(contextNode, temp.Value);
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}
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break;
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case XPathResultType.String:
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ProcessIds(contextNode, (string)argVal);
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break;
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case XPathResultType.Number:
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ProcessIds(contextNode, StringFunctions.toString((double)argVal));
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break;
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case XPathResultType.Boolean:
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ProcessIds(contextNode, StringFunctions.toString((bool)argVal));
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break;
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case XPathResultType_Navigator:
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ProcessIds(contextNode, ((XPathNavigator)argVal).Value);
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break;
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}
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return this;
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}
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void ProcessIds(XPathNavigator contextNode, string val) {
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string[] ids = XmlConvert.SplitString(val);
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for (int idx = 0; idx < ids.Length; idx++) {
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if (contextNode.MoveToId(ids[idx])) {
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Insert(outputBuffer, contextNode);
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}
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}
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}
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public override XPathNavigator MatchNode(XPathNavigator context) {
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Evaluate(new XPathSingletonIterator(context, /*moved:*/true));
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XPathNavigator result;
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while ((result = Advance()) != null) {
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if (result.IsSamePosition(context)) {
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return context;
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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 IDQuery(this); }
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}
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}
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