Function lpGetIntegerIfValid

src/t_stream.cpp:274–293

This is a wrapper function for lpGet() to directly get an integer value * from the listpack (that may store numbers as a string), converting * the string if needed. * The 'valid" argument is an optional output parameter to get an indication * if the record was valid, when this parameter is NULL, the function will * fail with an assertion. */

 * if the record was valid, when this parameter is NULL, the function will
 * fail with an assertion. */
static inline int64_t lpGetIntegerIfValid(unsigned char *ele, int *valid) {
    int64_t v;
    unsigned char *e = lpGet(ele,&v,NULL);
    if (e == NULL) {
        if (valid)
            *valid = 1;
        return v;
    }
    /* The following code path should never be used for how listpacks work:
     * they should always be able to store an int64_t value in integer
     * encoded form. However the implementation may change. */
    long long ll;
    int ret = string2ll((char*)e,v,&ll);
    if (valid)
        *valid = ret;
    else
        serverAssert(ret != 0);
    v = ll;
    return v;
}

#define lpGetInteger(ele) lpGetIntegerIfValid(ele, NULL)