class RubyLex

def check_termination_in_prev_line(code)
  tokens = self.class.ripper_lex_without_warning(code, context: @context)
  past_first_newline = false
  index = tokens.rindex do |t|
    # traverse first token before last line
    if past_first_newline
      if t.tok.include?("\n")
        true
      end
    elsif t.tok.include?("\n")
      past_first_newline = true
      false
    else
      false
    end
  end
  if index
    first_token = nil
    last_line_tokens = tokens[(index + 1)..(tokens.size - 1)]
    last_line_tokens.each do |t|
      unless [:on_sp, :on_ignored_sp, :on_comment].include?(t.event)
        first_token = t
        break
      end
    end
    if first_token && first_token.state != Ripper::EXPR_DOT
      tokens_without_last_line = tokens[0..index]
      code_without_last_line = tokens_without_last_line.map(&:tok).join
      opens_without_last_line = IRB::NestingParser.open_tokens(tokens_without_last_line)
      if code_terminated?(code_without_last_line, tokens_without_last_line, opens_without_last_line)
        return last_line_tokens.map(&:tok).join
      end
    end
  end
  false
end