class Rufo::Formatter

def visit_string_literal(node)
  # [:string_literal, [:string_content, exps]]
  heredoc = current_token_kind == :on_heredoc_beg
  tilde   = current_token_value.include?("~")
  if heredoc
    write current_token_value.rstrip
    next_token
    skip_space
    # A comma after a heredoc means the heredoc contents
    # come after an argument list, so put it in a list
    # for later.
    # The same happens if we already have a heredoc in
    # the list, which means this will come after other
    # heredocs.
    if comma? || (current_token_kind == :on_period) || !@heredocs.empty?
      @heredocs << [@current_node, node, tilde]
      return
    end
  elsif current_token_kind == :on_backtick
    consume_token :on_backtick
  else
    consume_token :on_tstring_beg
  end
  if heredoc
    @current_heredoc = [node, tilde]
  end
  visit_string_literal_end(node)
  @current_heredoc = nil if heredoc
end