class Dry::Schema::MessageCompiler

def message_tokens(args)
  args.each_with_object({}) do |arg, hash|
    case arg[1]
    when Array
      hash[arg[0]] = arg[1].join(LIST_SEPARATOR)
    when Range
      hash["#{arg[0]}_left".to_sym] = arg[1].first
      hash["#{arg[0]}_right".to_sym] = arg[1].last
    else
      hash[arg[0]] = arg[1]
    end
  end
end