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: parser.rs
    path of file: ./repos/gosub-engine/crates/gosub_css3/src
    
    the code of the file until where you have to start completion: use crate::tokenizer::{Number, Token, TokenType};
use crate::{Css3, Error};

mod anplusb;
mod at_rule;
mod block;
mod calc;
mod combinator;
mod condition;
mod declaration;
mod feature_function;
mod function;
m
    
    pub fn consume_delim(&mut self, delimiter: char) -> Result<char, Error> {
        let t = self.tokenizer.consume();
        match t.token_type {
            TokenType::Delim(c) if c == delimiter => Ok(c),
            _ => Err(Error::new(
                format!("Expected delimiter '{}', got {:?}", delimiter, t),
                self.tokenizer.current_location().clone(),
            )),
        }
    }