HipJSON: A high performance implementation of JSON parser with std.json syntax. Used by Redub and Hipreme Engine

[9il]

On Thursday, 23 October 2025 at 01:50:55 UTC, Hipreme wrote:
> Hey folks! I've decided to release HipJSON because this 
> dependency is being used frequently in both Hipreme Engine and 
> Redub, and the main difference is that it uses highly optimized 
> data structures inside it:
>
> - StringBuffer so all the string allocations are linear
> - [D Segmented 
> Hashmap](https://code.dlang.org/packages/d-segmented-hashmap): 
> A hashmap which does not require rehashing, thus making it the 
> fastest solution possible for a JSON parser
> - JSONArray which makes smart use of stack memory and promotion 
> to dynamic memory on demand
>
>
> It is the only JSON parser in D I saw being faster than the one 
> present in JavaScript which I think it is a good benchmark as 
> JSON is super important for web. Here are some stats comparison 
> for some common JSON libraries:
>
> ```
> STD JSON: 336 ms, 836 μs, and 6 hnsecs (50000 Tests)
> JSONPIPE: 206 ms and 571 μs (50000 Tests)
> MIR JSON: 266 ms, 770 μs, and 7 hnsecs (50000 Tests)
> HipJSON: 86 ms, 881 μs, and 8 hnsecs (50000 Tests)
> ```

Hi,

I have added proper Mir tests.
Otherwise, the benchmark is misleading: Mir ASDF is a few times 
faster.

https://github.com/MrcSnm/hipjson/pull/1

#### Target = Apple M4
```
STD JSON: 340 ms, 500 μs, and 7 hnsecs (50000 Tests)
JSONPIPE: 239 ms and 89 μs (50000 Tests)
Mir Ion Algebraic: 234 ms, 974 μs, and 3 hnsecs (50000 Tests)
Mir Ion Amazon   : 98 ms, 492 μs, and 8 hnsecs (50000 Tests)
Mir ASDF         : 22 ms, 389 μs, and 9 hnsecs (50000 Tests)
HipJSON: 85 ms, 877 μs, and 9 hnsecs (50000 Tests)
```

For a sophisticated JSON benchmark you may want to add it to

https://github.com/kostya/benchmarks