Function is_ipv6_address

test-app/runtime/src/main/cpp/ada/ada.cpp:16022–16035

}

bool is_ipv6_address(std::string_view input) noexcept {
  // If input's code point length is less than 2, then return false.
  if (input.size() < 2) return false;

  // Let input code points be input interpreted as a list of code points.
  // If input code points[0] is U+005B ([), then return true.
  if (input.front() == '[') return true;
  // If input code points[0] is U+007B ({) and input code points[1] is U+005B
  // ([), then return true.
  if (input.starts_with("{[")) return true;
  // If input code points[0] is U+005C (\) and input code points[1] is U+005B
  // ([), then return true.
  return input.starts_with("\\[");
}

std::string convert_modifier_to_string(url_pattern_part_modifier modifier) {
  // TODO: Optimize this.