/// <summary>
/// Deep copy an expression
/// </summary>
/// <param name="exp"></param>
/// <returns></returns>
public static Expression CopyExpression(Expression exp) {
Cloner cl = new Cloner();
return cl.CloneExpr(exp);
}
private ExpressionTree _CopyTree() {
var cl = new Cloner();
if (IsLeaf())
return new ExpressionTree(cl.CloneExpr(Data), null, null, null, Root);
return new ExpressionTree(cl.CloneExpr(Data), null, LChild._CopyTree(), RChild?._CopyTree());
}