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: literals.rs
    path of file: ./repos/c2rust/c2rust-transpile/src/translator
    
    the code of the file until where you have to start completion: #![deny(missing_docs)]
//! This code is used to generate literal expressions of various kinds.
//! These include integer, floating, array, struct, union, enum literals.

use failure::format_err;

use super::*;
use std::iter;

impl<'c> Translation<'c> {
    /// Generate an integer literal corresponding to the given type, value, and base.
    pub fn mk_int_lit(
        &self,
        ty: CQualTypeId,
        val: u64,
        base: IntBase,
    ) -> TranslationResult<Box<Expr>> {
        let lit = match base {
            IntBase::Dec => mk().int_unsuffixed_lit(val.into()),
            IntBase::Hex => mk().float_unsuffixed_lit(&format!("0x{:x}", val)),
            IntBase::Oct => mk().float_unsuffixed_lit(&format!("0o{:o}", val)),
        };

        let target_ty = self.convert_type(ty.ctype)?;
        Ok(mk().cast_expr(mk().lit_expr(lit), target_ty))
    }

   
    
    pub fn enum_for_i64(&self, enum_type_id: CTypeId, value: i64) -> Box<Expr> {
        let def_id = match self.ast_context.resolve_type(enum_type_id).kind {
            CTypeKind::Enum(def_id) => def_id,
            _ => panic!("{:?} does not point to an `enum` type", enum_type_id),
        };

        let (variants, underlying_type_id) = match self.ast_context[def_id].kind {
            CDeclKind::Enum {
                ref variants,
                integral_type,
                ..
            } => (variants, integral_type),
            _ => panic!("{:?} does not point to an `enum` declaration", def_id),
        };

        for &variant_id in variants {
            match self.ast_context[variant_id].kind {
                CDeclKind::EnumConstant { value: v, .. } => {
                    if v == ConstIntExpr::I(value) || v == ConstIntExpr::U(value as u64) {
                        let name = self.renamer.borrow().get(&variant_id).unwrap();

                        // Import the enum variant if needed
                        if let Some(cur_file) = *self.cur_file.borrow() {
                            self.add_import(cur_file, variant_id, &name);
                        }
                        return mk().path_expr(vec![name]);
                    }
                }
                _ => panic!("{:?} does not point to an enum variant", variant_id),
            }
        }

        let underlying_type_id =
            underlying_type_id.expect("Attempt to construct value of forward declared enum");
        let value = match self.ast_context.resolve_type(underlying_type_id.ctype).kind {
            CTypeKind::UInt => mk().lit_expr(mk().int_unsuffixed_lit((value as u32) as u128)),
            CTypeKind::ULong => mk().lit_expr(mk().int_unsuffixed_lit((value as u64) as u128)),
            _ => signed_int_expr(value),
        };

        let target_ty = self.convert_type(enum_type_id).unwrap();

        mk().cast_expr(value, target_ty)
    }