Method DoFinish

extern/re2/re2/parse.cc:715–725

Processes the end of input, returning the final regexp.

// Processes the end of input, returning the final regexp.
Regexp* Regexp::ParseState::DoFinish() {
  DoAlternation();
  Regexp* re = stacktop_;
  if (re != NULL && re->down_ != NULL) {
    status_->set_code(kRegexpMissingParen);
    status_->set_error_arg(whole_regexp_);
    return NULL;
  }
  stacktop_ = NULL;
  return FinishRegexp(re);
}

// Returns the leading regexp that re starts with.
// The returned Regexp* points into a piece of re,