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//------------------------------------------------------------------------------
// <copyright file="ResetableIterator.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;
using System.Globalization;
internal abstract class ResetableIterator : XPathNodeIterator {
// the best place for this constructors to be is XPathNodeIterator, to avoid DCR at this time let's ground them here
public ResetableIterator() {
base.count = -1;
}
protected ResetableIterator(ResetableIterator other) {
base.count = other.count;
}
protected void ResetCount() {
base.count = -1;
}
public abstract void Reset();
public virtual bool MoveToPosition(int pos) {
Reset();
for(int i = CurrentPosition; i < pos ; i ++) {
if(!MoveNext()) {
return false;
}
}
return true;
}
// Contruct extension: CurrentPosition should return 0 if MoveNext() wasn't called after Reset()
// (behavior is not defined for XPathNodeIterator)
public abstract override int CurrentPosition { get; }
}
}
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