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: error.rs
    path of file: ./repos/wgpu/naga/src/front/glsl
    
    the code of the file until where you have to start completion: use super::token::TokenValue;
use crate::{proc::ConstantEvaluatorError, Span};
use codespan_reporting::diagnostic::{Diagnostic, Label};
use codespan_reporting::files::SimpleFile;
use codespan_reporting::term;
use pp_rs::token::PreprocessorError;
use std::borrow::Cow;
use termcolor::{NoColor, WriteColor};
use thiserror::Error;

fn join_with_comma(list: &[ExpectedToken]) -> String {
    let mut string = "".to_string();
    for (i, val) in list.iter().enumerate() {
        string.push_str(&val.to_string());
        match i {
       
    
    pub fn emit_to_writer_with_path(&self, writer: &mut impl WriteColor, source: &str, path: &str) {
        let path = path.to_string();
        let files = SimpleFile::new(path, source);
        let config = codespan_reporting::term::Config::default();

        for err in &self.errors {
            let mut diagnostic = Diagnostic::error().with_message(err.kind.to_string());

            if let Some(range) = err.meta.to_range() {
                diagnostic = diagnostic.with_labels(vec![Label::primary((), range)]);
            }

            term::emit(writer, &config, &files, &diagnostic).expect("cannot write error");
        }
    }