Function lpNext

app/redis-6.2.6/src/listpack.c:455–461

If 'p' points to an element of the listpack, calling lpNext() will return * the pointer to the next element (the one on the right), or NULL if 'p' * already pointed to the last element of the listpack. */

 * the pointer to the next element (the one on the right), or NULL if 'p'
 * already pointed to the last element of the listpack. */
unsigned char *lpNext(unsigned char *lp, unsigned char *p) {
    assert(p);
    p = lpSkip(p);
    if (p[0] == LP_EOF) return NULL;
    lpAssertValidEntry(lp, lpBytes(lp), p);
    return p;
}

/* If 'p' points to an element of the listpack, calling lpPrev() will return
 * the pointer to the previous element (the one on the left), or NULL if 'p'