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: literal.rs
    path of file: ./repos/srgn/src/scoping
    
    the code of the file until where you have to start completion: use super::{ROScopes, Scoper};
use log::trace;
use std::{error::Error, fmt, ops::Range};
use unescape::unescape;

/// A literal string for querying.
#[derive(Debug)]
pub struct Literal(String);

/// An error that can occur when parsing a literal.
#[derive(Debug)]
pub enum LiteralError {
    /// The litera
    
    fn scope<'viewee>(&self, input: &'viewee str) -> ROScopes<'viewee> {
        let ranges = {
            let len = self.0.len();

            let ranges = input
                .match_indices(&self.0)
                .map(|(i, _)| Range {
                    start: i,
                    end: i + len,
                })
                .collect();

            trace!("Ranges in scope for {:?}: {:?}", self, ranges);

            ranges
        };

        ROScopes::from_raw_ranges(input, ranges)
    }