private XmlEntityReference LoadEntityReferenceNode(bool direct)
{
Debug.Assert(_reader.NodeType == XmlNodeType.EntityReference);
XmlEntityReference eref = direct ? new XmlEntityReference(_reader.Name, _doc) : _doc.CreateEntityReference(_reader.Name);
if (_reader.CanResolveEntity)
{
_reader.ResolveEntity();
while (_reader.Read() && _reader.NodeType != XmlNodeType.EndEntity)
{
XmlNode node = direct ? LoadNodeDirect() : LoadNode(false);
if (node != null)
{
eref.AppendChildForLoad(node, _doc);
}
}
// Code internally relies on the fact that an EntRef nodes has at least one child (even an empty text node). Ensure that this holds true,
// if the reader does not present any children for the ent-ref
if (eref.LastChild == null)
{
eref.AppendChildForLoad(_doc.CreateTextNode(string.Empty), _doc);
}
}
return(eref);
}
// Creates a duplicate of this node.
public override XmlNode CloneNode(bool deep)
{
Debug.Assert(OwnerDocument != null);
XmlEntityReference eref = OwnerDocument.CreateEntityReference(_name);
return(eref);
}
//The function is called when expanding the entity ref. ( inside XmlEntityReference.SetParent )
internal void ExpandEntityReference(XmlEntityReference eref)
{
//when the ent ref is not associated w/ an entity, append an empty string text node as child
_doc = eref.OwnerDocument;
bool bOrigLoadingState = _doc.IsLoading;
_doc.IsLoading = true;
switch (eref.Name)
{
case "lt":
eref.AppendChildForLoad(_doc.CreateTextNode("<"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "gt":
eref.AppendChildForLoad(_doc.CreateTextNode(">"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "amp":
eref.AppendChildForLoad(_doc.CreateTextNode("&"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "apos":
eref.AppendChildForLoad(_doc.CreateTextNode("'"), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
case "quot":
eref.AppendChildForLoad(_doc.CreateTextNode("\""), _doc);
_doc.IsLoading = bOrigLoadingState;
return;
}
XmlNamedNodeMap entities = _doc.Entities;
foreach (XmlEntity ent in entities)
{
if (Ref.Equal(ent.Name, eref.Name))
{
ParsePartialContent(eref, EntitizeName(eref.Name), XmlNodeType.EntityReference);
return;
}
}
//no fit so far
if (!(_doc.ActualLoadingStatus))
{
eref.AppendChildForLoad(_doc.CreateTextNode(""), _doc);
_doc.IsLoading = bOrigLoadingState;
}
else
{
_doc.IsLoading = bOrigLoadingState;
throw new XmlException(ResXml.Xml_UndeclaredParEntity, eref.Name);
}
}