class Rufo::Formatter

def visit_block_arguments(node)
  # [:block_var, params, local_params]
  _, params, local_params = node
  empty_params = empty_params?(params)
  check :on_op
  # check for ||
  if empty_params && !local_params
    # Don't write || as it's meaningless
    if current_token_value == "|"
      next_token
      skip_space_or_newline
      check :on_op
      next_token
    else
      next_token
    end
    return
  end
  consume_token :on_op
  found_semicolon = skip_space_or_newline(_want_semicolon: true, write_first_semicolon: true)
  if found_semicolon
    # Nothing
  elsif empty_params && local_params
    consume_token :on_semicolon
    found_semicolon = true
  end
  skip_space_or_newline
  unless empty_params
    visit params
    skip_space
  end
  if local_params
    if semicolon?
      consume_token :on_semicolon
      consume_space
    end
    visit_comma_separated_list local_params
  else
    skip_space_or_newline
  end
  consume_op "|"
end