internal override CellTreeNode VisitOpNode(OpCellTreeNode node, bool dummy)
{
List <CellTreeNode> flattenedChildren = new List <CellTreeNode>();
// Flatten the children first
foreach (CellTreeNode child in node.Children)
{
CellTreeNode flattenedChild = child.Accept <bool, CellTreeNode>(this, dummy);
flattenedChildren.Add(flattenedChild);
}
Debug.Assert(flattenedChildren.Count > 1, "node must have more than 1 child and be an OpCellTreeNode");
// If this op is associative and a child's OP is the same as this
// op, add those to be this nodes children
List <CellTreeNode> finalChildren = flattenedChildren;
if (CellTreeNode.IsAssociativeOp(node.OpType))
{
finalChildren = new List <CellTreeNode>();
foreach (CellTreeNode child in flattenedChildren)
{
if (child.OpType == node.OpType)
{
finalChildren.AddRange(child.Children);
}
else
{
finalChildren.Add(child);
}
}
}
OpCellTreeNode result = new OpCellTreeNode(node.ViewgenContext, node.OpType, finalChildren);
return(result);
}
internal override CellTreeNode VisitLeftAntiSemiJoin(OpCellTreeNode node, TInput param)
{
return(AcceptChildren(node, param));
}
internal override CellTreeNode VisitFullOuterJoin(OpCellTreeNode node, TInput param)
{
return(AcceptChildren(node, param));
}
internal abstract TOutput VisitOpNode(OpCellTreeNode node, TInput param);
internal abstract TOutput VisitLeftAntiSemiJoin(OpCellTreeNode node, TInput param);
internal abstract TOutput VisitFullOuterJoin(OpCellTreeNode node, TInput param);
