Method parse_ipv6

test-app/runtime/src/main/cpp/ada/ada.cpp:12110–12338

}

bool url::parse_ipv6(std::string_view input) {
  ada_log("parse_ipv6 ", input, " [", input.size(), " bytes]");

  if (input.empty()) {
    return is_valid = false;
  }
  // Let address be a new IPv6 address whose IPv6 pieces are all 0.
  std::array<uint16_t, 8> address{};

  // Let pieceIndex be 0.
  int piece_index = 0;

  // Let compress be null.
  std::optional<int> compress{};

  // Let pointer be a pointer for input.
  std::string_view::iterator pointer = input.begin();

  // If c is U+003A (:), then:
  if (input[0] == ':') {
    // If remaining does not start with U+003A (:), validation error, return
    // failure.
    if (input.size() == 1 || input[1] != ':') {
      ada_log("parse_ipv6 starts with : but the rest does not start with :");
      return is_valid = false;
    }

    // Increase pointer by 2.
    pointer += 2;

    // Increase pieceIndex by 1 and then set compress to pieceIndex.
    compress = ++piece_index;
  }

  // While c is not the EOF code point:
  while (pointer != input.end()) {
    // If pieceIndex is 8, validation error, return failure.
    if (piece_index == 8) {
      ada_log("parse_ipv6 piece_index == 8");
      return is_valid = false;
    }

    // If c is U+003A (:), then:
    if (*pointer == ':') {
      // If compress is non-null, validation error, return failure.
      if (compress.has_value()) {
        ada_log("parse_ipv6 compress is non-null");
        return is_valid = false;
      }

      // Increase pointer and pieceIndex by 1, set compress to pieceIndex, and
      // then continue.
      pointer++;
      compress = ++piece_index;
      continue;
    }

    // Let value and length be 0.