| public static GetTextFollowing ( XPathNode &pageCurrent, int &idxCurrent, XPathNode pageEnd, int idxEnd ) : bool | ||
| pageCurrent | XPathNode | |
| idxCurrent | int | |
| pageEnd | XPathNode | |
| idxEnd | int | |
| return | bool | |
/// <summary>
/// Move to the next node that:
/// 1. Follows the current node in document order (includes descendants, unlike XPath following axis)
/// 2. Precedes "end" in document order (if end is null, then all following nodes in the document are considered)
/// 3. Has the specified XPathNodeType
/// Return false if the current node has no matching following nodes.
/// </summary>
public override bool MoveToFollowing(XPathNodeType type, XPathNavigator end)
{
XPathDocumentNavigator endTiny = end as XPathDocumentNavigator;
XPathNode[] page, pageEnd;
int idx, idxEnd;
// If searching for text, make sure to handle collapsed text nodes correctly
if (type == XPathNodeType.Text || type == XPathNodeType.All)
{
if (_pageCurrent[_idxCurrent].HasCollapsedText)
{
// Positioned on an element with collapsed text, so return the virtual text node, assuming it's before "end"
if (endTiny != null && _idxCurrent == endTiny._idxParent && _pageCurrent == endTiny._pageParent)
{
// "end" is positioned to a virtual attribute, namespace, or text node
return(false);
}
_pageParent = _pageCurrent;
_idxParent = _idxCurrent;
_idxCurrent = _pageCurrent[_idxCurrent].Document.GetCollapsedTextNode(out _pageCurrent);
return(true);
}
if (type == XPathNodeType.Text)
{
// Get node on which scan ends (null if rest of document should be scanned, parent if positioned on virtual node)
idxEnd = GetFollowingEnd(endTiny, true, out pageEnd);
// If this navigator is positioned on a virtual node, then compute following of parent
if (_idxParent != 0)
{
page = _pageParent;
idx = _idxParent;
}
else
{
page = _pageCurrent;
idx = _idxCurrent;
}
// If ending node is a virtual node, and current node is its parent, then we're done
if (endTiny != null && endTiny._idxParent != 0 && idx == idxEnd && page == pageEnd)
{
return(false);
}
// Get all virtual (collapsed) and physical text nodes which follow the current node
if (!XPathNodeHelper.GetTextFollowing(ref page, ref idx, pageEnd, idxEnd))
{
return(false);
}
if (page[idx].NodeType == XPathNodeType.Element)
{
// Virtualize collapsed text nodes
Debug.Assert(page[idx].HasCollapsedText);
_idxCurrent = page[idx].Document.GetCollapsedTextNode(out _pageCurrent);
_pageParent = page;
_idxParent = idx;
}
else
{
// Physical text node
Debug.Assert(page[idx].IsText);
_pageCurrent = page;
_idxCurrent = idx;
_pageParent = null;
_idxParent = 0;
}
return(true);
}
}
// Get node on which scan ends (null if rest of document should be scanned, parent + 1 if positioned on virtual node)
idxEnd = GetFollowingEnd(endTiny, false, out pageEnd);
// If this navigator is positioned on a virtual node, then compute following of parent
if (_idxParent != 0)
{
if (!XPathNodeHelper.GetContentFollowing(ref _pageParent, ref _idxParent, pageEnd, idxEnd, type))
{
return(false);
}
_pageCurrent = _pageParent;
_idxCurrent = _idxParent;
_pageParent = null;
_idxParent = 0;
return(true);
}
return(XPathNodeHelper.GetContentFollowing(ref _pageCurrent, ref _idxCurrent, pageEnd, idxEnd, type));
}
public override bool MoveToFollowing(XPathNodeType type, XPathNavigator end)
{
XPathNode[] nodeArray2;
int num2;
XPathDocumentNavigator navigator = end as XPathDocumentNavigator;
if ((type == XPathNodeType.Text) || (type == XPathNodeType.All))
{
if (this.pageCurrent[this.idxCurrent].HasCollapsedText)
{
if (((navigator != null) && (this.idxCurrent == navigator.idxParent)) && (this.pageCurrent == navigator.pageParent))
{
return(false);
}
this.pageParent = this.pageCurrent;
this.idxParent = this.idxCurrent;
this.idxCurrent = this.pageCurrent[this.idxCurrent].Document.GetCollapsedTextNode(out this.pageCurrent);
return(true);
}
if (type == XPathNodeType.Text)
{
XPathNode[] pageParent;
int idxParent;
num2 = this.GetFollowingEnd(navigator, true, out nodeArray2);
if (this.idxParent != 0)
{
pageParent = this.pageParent;
idxParent = this.idxParent;
}
else
{
pageParent = this.pageCurrent;
idxParent = this.idxCurrent;
}
if (((navigator != null) && (navigator.idxParent != 0)) && ((idxParent == num2) && (pageParent == nodeArray2)))
{
return(false);
}
if (!XPathNodeHelper.GetTextFollowing(ref pageParent, ref idxParent, nodeArray2, num2))
{
return(false);
}
if (pageParent[idxParent].NodeType == XPathNodeType.Element)
{
this.idxCurrent = pageParent[idxParent].Document.GetCollapsedTextNode(out this.pageCurrent);
this.pageParent = pageParent;
this.idxParent = idxParent;
}
else
{
this.pageCurrent = pageParent;
this.idxCurrent = idxParent;
this.pageParent = null;
this.idxParent = 0;
}
return(true);
}
}
num2 = this.GetFollowingEnd(navigator, false, out nodeArray2);
if (this.idxParent == 0)
{
return(XPathNodeHelper.GetContentFollowing(ref this.pageCurrent, ref this.idxCurrent, nodeArray2, num2, type));
}
if (!XPathNodeHelper.GetContentFollowing(ref this.pageParent, ref this.idxParent, nodeArray2, num2, type))
{
return(false);
}
this.pageCurrent = this.pageParent;
this.idxCurrent = this.idxParent;
this.pageParent = null;
this.idxParent = 0;
return(true);
}