Function dynparser::ast::flat::get_nodename

pub fn get_nodename(node: &Node) -> Result<&str, Error>

It will get the node name of a node if it’s a rule one (begin or end). In other case, it will return an error

   use dynparser::ast::flat;

   let node = flat::Node::BeginRule("aaa".to_string());

   let node_name = flat::get_nodename(&node).unwrap();

   assert!(node_name == "aaa");