Pekka Enberg 7ca84ee5b0 Merge 'parser: use YYSTACKDEPTH' from Lâm Hoàng Phúc ...

sqlite uses [fixed-size](https://github.com/sqlite/sqlite/blob/7fc6e6a27
26e650d3b82c6d3683bdbdc10e02467/tool/lempar.c#L238) array for `yystack`
and grow stack if needed. Let replace `vec` with `smallvec` in rust
version.
after:
```sh
sqlparser-rs parsing benchmark/sqlparser::select
                        time:   [564.19 ns 565.63 ns 567.18 ns]
                        change: [-11.514% -11.288% -11.067%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 4 outliers among 100 measurements (4.00%)
  1 (1.00%) low mild
  3 (3.00%) high mild
sqlparser-rs parsing benchmark/sqlparser::with_select
                        time:   [1.9812 µs 1.9861 µs 1.9914 µs]
                        change: [-7.5226% -7.3080% -7.0858%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 5 outliers among 100 measurements (5.00%)
  1 (1.00%) low mild
  4 (4.00%) high mild

```

Reviewed-by: Jussi Saurio <jussi.saurio@gmail.com>

Closes #1999

2025-07-08 16:20:51 +03:00

..

sqlite3-parser

Merge 'parser: use YYSTACKDEPTH' from Lâm Hoàng Phúc

2025-07-08 16:20:51 +03:00