public static SyntaxTreeNode BuildTree(ITextBuffer textBuffer, IEnumerable <IMappingTagSpan <IStructureTag> > tags)
{
SyntaxTreeNode root = new SyntaxTreeNode(null, null);
var depths = GetDepthList(textBuffer, tags);
if (depths.Count != tags.Count())
{
throw new Exception("whoops");
}
SyntaxTreeNode activeNode = root;
int lastIndex = -1;
for (int i = 0; i < tags.Count(); i++)
{
SyntaxTreeNode parentNode = activeNode;
int N = lastIndex - depths[i] + 1;
lastIndex = depths[i];
for (int j = 0; j < N; j++)
{
parentNode = parentNode.GetParent();
}
SyntaxTreeNode node = new SyntaxTreeNode(parentNode, tags.ElementAt(i));
activeNode = node;
}
return(root);
}
public void AltLeft()
{
SyntaxTreeNode node = ActiveNode.GetParent();
if (node == null)
{
return;
}
ActiveNode = node;
TextView.Caret.MoveTo(ActiveNode.GetHeaderPosition(TextBuffer));
}