code: def parse(self, inputstring, parser, preargs, postargs):
          
          self.reset()
          pre_procd = None
          with logger.gather_parsing_stats():
              try:
                  pre_procd = self.pre(inputstring, **preargs)
                  parsed = parse(parser, pre_procd)
                  out = self.post(parsed, **postargs)
              except ParseBaseException as err:
                  raise self.make_parse_err(err)
              except CoconutDeferredSyntaxError as err:
                  internal_assert(pre_procd is not None, "invalid deferred syntax error in pre-processing", err)
                  raise self.make_syntax_err(err, pre_procd)
              except RuntimeError as err:
                  raise CoconutException(
                      str(err), extra="try again with --recursion-limit greater than the current "
                      + str(sys.getrecursionlimit()),
                  )
          if self.strict:
              for name in self.unused_imports:
                  if name != "*":
                      logger.warn("found unused import", name, extra="disable --strict to dismiss")
          return out
docs: Use the parser to parse the inputstring with appropriate setup and teardown.