module FFaker::String

def generate_range(tokens)
  result = []
  while tokens.any?
    token = tokens.shift
    if token == DASH && tokens.first && result.last
      result += [*result.pop..tokens.shift]
    elsif token == BACKSLASH
      result << special(tokens.shift)
    else
      result << token
    end
  end
  result
end