You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mod.rs
    path of file: ./repos/rdms/src/parsec
    
    the code of the file until where you have to start completion: //! Module implement parser-combinator library.

use std::{fmt, result};

use crate::Result;

mod lex;
mod parse;

/// Type position in (line_no, col
    
    pub fn set_name(&mut self, nm: &str) {
        let nm = nm.to_string();
        match self {
            Node::Maybe { name, .. } => *name = nm,
            Node::Token { name, .. } => *name = nm,
            Node::Ws { name, .. } => *name = nm,
            Node::M { name, .. } => *name = nm,
        }
    }