67 lines
2.5 KiB
C#
67 lines
2.5 KiB
C#
//------------------------------------------------------------------------------
|
|
// <copyright file="DescendantQuery.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 abstract class DescendantBaseQuery : BaseAxisQuery {
|
|
protected bool matchSelf;
|
|
protected bool abbrAxis;
|
|
|
|
public DescendantBaseQuery(Query qyParent, string Name, string Prefix, XPathNodeType Type, bool matchSelf, bool abbrAxis) : base(qyParent, Name, Prefix, Type) {
|
|
this.matchSelf = matchSelf;
|
|
this.abbrAxis = abbrAxis;
|
|
}
|
|
public DescendantBaseQuery(DescendantBaseQuery other) : base(other) {
|
|
this.matchSelf = other.matchSelf;
|
|
this.abbrAxis = other.abbrAxis;
|
|
}
|
|
|
|
public override XPathNavigator MatchNode(XPathNavigator context) {
|
|
if (context != null) {
|
|
if (!abbrAxis) {
|
|
throw XPathException.Create(Res.Xp_InvalidPattern);
|
|
}
|
|
XPathNavigator result = null;
|
|
if (matches(context)) {
|
|
if (matchSelf) {
|
|
if ((result = qyInput.MatchNode(context)) != null) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
XPathNavigator anc = context.Clone();
|
|
while (anc.MoveToParent()) {
|
|
if ((result = qyInput.MatchNode(anc)) != null) {
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public override void PrintQuery(XmlWriter w) {
|
|
w.WriteStartElement(this.GetType().Name);
|
|
if (matchSelf) {
|
|
w.WriteAttributeString("self", "yes");
|
|
}
|
|
if (NameTest) {
|
|
w.WriteAttributeString("name", Prefix.Length != 0 ? Prefix + ':' + Name : Name);
|
|
}
|
|
if (TypeTest != XPathNodeType.Element) {
|
|
w.WriteAttributeString("nodeType", TypeTest.ToString());
|
|
}
|
|
qyInput.PrintQuery(w);
|
|
w.WriteEndElement();
|
|
}
|
|
}
|
|
}
|