Decoder getter (cpp)

decoder.cpp

#include <memory>
#include <vector>

class Decoder {
    public:
    Decoder() { buffer.reserve(4990);}

    bool decode(unsigned char* data, uint32_t size) {
        if (size == 10) {
            buffer.insert(buffer.end(), data, data + size);
            return true;
        } else {
            buffer.insert(buffer.end(), data, data + size);
            return false;
        }
    }

    std::vector<unsigned char> get() {
        return buffer;
    }
    
    private:
        std::vector<unsigned char> buffer;
};

unsigned char big_data[10]{5};
unsigned char small_data[5]{4};

class Link {

    public:

    void process(bool big) {
        if (big) {
            if (decoder.decode(big_data, 10)) {
                auto data = decoder.get();
            }
        } else {
          if (decoder.decode(small_data, 4)) {
              auto data = decoder.get();
          }
        }
    }

    private:
    Decoder decoder;
 

};

int main() {
    Decoder decoder{};
    Link link{};
    link.process(false);
    link.process(false);
    link.process(false);
    link.process(false);
    link.process(false);
    link.process(true);

}