public XPathMutableCursor(IXmlNode parent, CompiledXPath path,
IXmlIncludedTypeMap knownTypes, IXmlNamespaceSource namespaces, CursorFlags flags)
: base(path, namespaces, parent)
{
if (null == parent)
{
throw Error.ArgumentNull("parent");
}
if (null == path)
{
throw Error.ArgumentNull("path");
}
if (null == knownTypes)
{
throw Error.ArgumentNull("knownTypes");
}
if (!path.IsCreatable)
{
throw Error.XPathNotCreatable(path);
}
this.step = path.FirstStep;
this.knownTypes = knownTypes;
this.flags = flags;
var source = parent.RequireRealizable <XPathNavigator>();
if (source.IsReal)
{
iterator = new XPathBufferedNodeIterator(
source.Value.Select(path.FirstStep.Path));
}
}
private XPathBufferedNodeIterator(XPathBufferedNodeIterator iterator)
{
items = iterator.items;
index = iterator.index;
}