code: def _compress_tokens(tokens):
      recorder = None
      def _edge_case_stray_end_quoted(tokens, index):
          tokens[index] = Token(type=TokenType.UnquotedLiteral,
                                content=tokens[index].content,
                                line=tokens[index].line,
                                col=tokens[index].col)
      tokens_len = len(tokens)
      index = 0
      with _EdgeCaseStrayParens() as edge_case_stray_parens:
          edge_cases = [
              (_is_paren_type, edge_case_stray_parens),
              (_is_end_quoted_type, _edge_case_stray_end_quoted),
          ]
          while index < tokens_len:
              recorder = _find_recorder(recorder, tokens, index)
              if recorder is not None:
                  result = recorder.consume_token(tokens, index, tokens_len)
                  if result is not None:
                      (index, tokens_len, tokens) = result
                      recorder = None
              else:
                  for matcher, handler in edge_cases:
                      if matcher(tokens[index].type):
                          handler(tokens, index)
              index += 1
      return tokens