Function parse_order_by_clause

src/cypher/cypher.c:1734–1753

Parse the full comma-separated ORDER BY key list (#1334). Consuming only the * first key left ", key2 ... LIMIT n" unparsed, which silently dropped the * LIMIT and flooded the caller with the whole result set. Returns 0 on * success, CBM_NOT_FOUND when the key list exceeds the modeled maximum. */

 * LIMIT and flooded the caller with the whole result set. Returns 0 on
 * success, CBM_NOT_FOUND when the key list exceeds the modeled maximum. */
static int parse_order_by_clause(parser_t *p, cbm_return_clause_t *r) {
    expect(p, TOK_BY);
    do {
        if (r->order_key_count >= CBM_CYPHER_ORDER_KEYS_MAX) {
            return CBM_NOT_FOUND;
        }
        char order_buf[CBM_SZ_256];
        parse_order_by_expr(p, order_buf, sizeof(order_buf));
        bool desc = false;
        if (match(p, TOK_ASC)) {
            desc = false;
        } else if (match(p, TOK_DESC)) {
            desc = true;
        }
        r->order_keys[r->order_key_count] = heap_strdup(order_buf);
        r->order_descs[r->order_key_count] = desc;
        r->order_key_count++;
    } while (match(p, TOK_COMMA));
    return 0;
}

static void free_return_clause(cbm_return_clause_t *r);