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: fiddle_hacks.rb
    path of file: ./repos/tenderjit/lib/tenderjit
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

# Just some additions to fiddle that maybe we should upstream?

require "fiddle"

module Fiddle
  TYPE_TO_NAME = Fiddle.constants
    
      def initialize name, byte_size, names, types, offsets = nil
        @name = name
        @members_by_name = {}

        names.map.with_index do |name, i|
          case types[i]
          when Struct, Union, Array
            member = SubStruct.new(name, types[i], offsets[i])
            @members_by_name[name] = member
          when Layout::AutoRef
            reader = Immediate.new(name, types[i].type, offsets[i])
            member = RefCast.new(name, reader, offsets[i], types[i].block)
            @members_by_name[name] = member
          when Layout::D5BitField
            type = types[i]
            name.zip(type.bitfields).each do |bname, (bit_offset, bit_size)|
              @members_by_name[bname] = D5Reader.new(bname, bit_offset, bit_size)
            end
          when Layout::D4BitField
            type = types[i]
            name.zip(types[i].bitfields).each do |bname, (loc, byte_size, bit_offset, bit_size)|
              @members_by_name[bname] = D4Reader.new(loc, byte_size, bit_offset, bit_size)
            end
            member = Immediate.new(name, -Fiddle::TYPE_INT32_T, offsets[i])
          else
            member = Immediate.new(name, types[i], offsets[i])
            @members_by_name[name] = member
          end
        end