static void InsertComment(ref AstNode insertionPoint, AstNode newNode, Role role, bool isDocumentationComment, AstNode rootNode)
{
TextLocation insertAt = newNode.StartLocation;
// Advance insertionPoint to the first node that has a start location >= insertAt
while (insertionPoint != null && insertionPoint.StartLocation < insertAt) {
// Enter the current node if insertAt is within
while (insertAt < insertionPoint.EndLocation && insertionPoint.FirstChild != null) {
insertionPoint = insertionPoint.FirstChild;
}
// Go to next node (insertionPoint.NextSibling if it exists; otherwise the next sibling of the parent node etc.)
insertionPoint = insertionPoint.GetNextNode();
}
// As a special case, XmlDoc gets inserted at the beginning of the entity declaration
if (isDocumentationComment && insertionPoint is EntityDeclaration && insertionPoint.FirstChild != null) {
insertionPoint = insertionPoint.FirstChild;
}
if (insertionPoint == null) {
// we're at the end of the compilation unit
rootNode.AddChildUnsafe(newNode, role);
} else {
insertionPoint.Parent.InsertChildBeforeUnsafe(insertionPoint, newNode, role);
}
}
