public override bool Read()
{
bool result = base.Read();
if (this.NodeType == System.Xml.XmlNodeType.Element)
{
DocumentLocation elementLocation = this.CurrentLocation;
if (this.IsEmptyElement)
{
DocumentRange emptyElementRange = this.FindEmptyElementRange(elementLocation);
this.EmptyElementRanges.Add(elementLocation, emptyElementRange);
}
else
{
DocumentLocation startElementBracket = this.FindStartElementBracket(elementLocation);
this.StartElementLocations.Add(elementLocation, startElementBracket);
// Push a null as a place holder. In XmlNodeType.Text part, we replace this
// null with real data. Why not pushing real data only without this place holder?
// Because in XmlNodeType.EndElement, we need to know whether there is Text. Think
// about situation like <a>Text1<b><c>Text2</c></b>Text3</a>
// So, each time an Element starts, we push a place holder in the stack so that Start
// and End don't mis-match.
this.contentStartLocationStack.Push(null);
}
int attributeCount = this.AttributeCount;
if (attributeCount > 0)
{
for (int i = 0; i < attributeCount; i++)
{
this.MoveToAttribute(i);
DocumentLocation memberLocation = this.CurrentLocation;
DocumentRange attributeValueRange = this.FindAttributeValueLocation(memberLocation);
this.AttributeValueRanges.Add(memberLocation, attributeValueRange);
}
this.MoveToElement();
}
}
else if (this.NodeType == System.Xml.XmlNodeType.EndElement)
{
DocumentLocation endElementLocation = this.CurrentLocation;
DocumentLocation endElementBracket = this.FindEndElementBracket(endElementLocation);
this.EndElementLocations.Add(endElementLocation, endElementBracket);
UnitTestUtility.Assert(
this.contentStartLocationStack.Count > 0,
"The stack should contain at least a null we pushed in StartElement.");
DocumentLocation contentStartLocation = this.contentStartLocationStack.Pop();
if (contentStartLocation != null)
{
DocumentLocation contentEnd = this.FindContentEndBefore(endElementLocation);
this.ContentValueRanges.Add(endElementLocation, new DocumentRange(contentStartLocation, contentEnd));
}
}
else if (this.NodeType == System.Xml.XmlNodeType.Text)
{
UnitTestUtility.Assert(this.contentStartLocationStack.Count > 0, "Adding Text with out StartElement?");
if (this.contentStartLocationStack.Peek() == null)
{
// no text was added since the last StartElement.
// This is the start of the content of this Element.
// <a>ABCDE</a>
// Sometimes, xml reader gives the text by ABC and DE in
// two times.
this.contentStartLocationStack.Pop();
this.contentStartLocationStack.Push(this.CurrentLocation);
}
}
return(result);
}
