internal static CellTreeNode Flatten(CellTreeNode node)
{
// First do simple flattening and then associative op flattening
CellTreeNode newNode = FlatteningVisitor.Flatten(node);
AssociativeOpFlatteningVisitor visitor = new AssociativeOpFlatteningVisitor();
return(newNode.Accept <bool, CellTreeNode>(visitor, true));
}
// effects: Like Flatten, flattens the tree and then collapses
// associative operators, e.g., (A IJ B) IJ C is changed to A IJ B IJ C
internal CellTreeNode AssociativeFlatten()
{
return(AssociativeOpFlatteningVisitor.Flatten(this));
}
