Function distinct_list_add

src/cypher/cypher.c:3737–3746

Append `val` to a string list only if not already present — i.e. maintain a * set of distinct values. Used by COUNT(DISTINCT x) (#239). */

/* Append `val` to a string list only if not already present — i.e. maintain a
 * set of distinct values. Used by COUNT(DISTINCT x) (#239). */
static void distinct_list_add(char ***list, int *count, const char *val) {
    for (int i = 0; i < *count; i++) {
        if (strcmp((*list)[i], val) == 0) {
            return;
        }
    }
    int idx = (*count)++;
    *list = safe_realloc(*list, (size_t)(idx + SKIP_ONE) * sizeof(char *));
    (*list)[idx] = heap_strdup(val);
}

/* Sort bindings by the ORDER BY key list (virtual variables) using bubble
 * sort; later keys break ties, direction is per key (#1334). */