const ::envoy::type::matcher::v3::RegexMatchAndSubstitute& proto) {

  ASSERT(!proto.pattern().regex().empty(), "invalid RegexMatchAndSubstitute message");

  auto regex_or_status = Regex::Utility::parseRegex(proto.pattern(), engine);

  RETURN_IF_NOT_OK(regex_or_status.status());

  return RegexReplace(std::move(regex_or_status).value(), std::string{proto.substitution()});

}

std::string RegexReplace::apply(absl::string_view in) const {

  return regex_->replaceAll(in, substitution_);

}