Merge "libgui: avoid allocations for bit manip" into main

int32_t LayerMetadata::getInt32(uint32_t key, int32_t fallback) const {

    if (!has(key)) return fallback;

    const std::vector<uint8_t>& data = mMap.at(key);

    if (data.size() < sizeof(uint32_t)) return fallback;

    Parcel p;

    p.setData(data.data(), data.size());

    return p.readInt32();

    // TODO: should handle when not equal?

    if (data.size() < sizeof(int32_t)) return fallback;

    int32_t result;

    memcpy(&result, data.data(), sizeof(result));

    return result;

}

void LayerMetadata::setInt32(uint32_t key, int32_t value) {

    std::vector<uint8_t>& data = mMap[key];

    Parcel p;

    p.writeInt32(value);

    data.resize(p.dataSize());

    memcpy(data.data(), p.data(), p.dataSize());

    data.resize(sizeof(value));

    memcpy(data.data(), &value, sizeof(value));

}

std::optional<int64_t> LayerMetadata::getInt64(uint32_t key) const {

    if (!has(key)) return std::nullopt;

    const std::vector<uint8_t>& data = mMap.at(key);

    // TODO: should handle when not equal?

    if (data.size() < sizeof(int64_t)) return std::nullopt;

    Parcel p;

    p.setData(data.data(), data.size());

    return p.readInt64();

    int64_t result;

    memcpy(&result, data.data(), sizeof(result));

    return result;

}

std::string LayerMetadata::itemToString(uint32_t key, const char* separator) const {