シームレスな統合とコードの再利用のために Swift から C クラスと対話するにはどうすればよいですか?

<code class="cpp">class MBR {
    std::string filename;
public:
    MBR(std::string filename);
    const char *hexdump();
    const char *imageType();
    const char *bootCode();
    const char *partitions();
private:
    bool readFile(unsigned char *buffer, const unsigned int length);
};</code>

<code class="cpp">const void *initialize(char *filename) {
    MBR *mbr = new MBR(filename);

    return (void *)mbr;
}

const char *hexdump(const void *object) {
    MBR *mbr;
    static char retval[2048];

    mbr = (MBR *)object;
    strcpy(retval, mbr->hexdump());
    return retval;
}

const char *imageType(const void *object) {
    MBR *mbr;
    static char retval[256];

    mbr = (MBR *)object;
    strcpy(retval, mbr->imageType());
    return retval;
}</code>

<code class="swift">class MBRSwift {
    private var cppObject: UnsafeMutablePointer<Void>!

    init(filename: String) {
        cppObject = UnsafeMutablePointer<Void>(initialize(filename))
    }

    var imageType: String {
        return String(cString: imageType(cppObject))
    }

    var hexdump: String {
        return String(cString: hexdump(cppObject))
    }
}</code>

<code class="swift">let mbr = MBRSwift(filename: "filename.mbr")
print(mbr.imageType)
print(mbr.hexdump)</code>