Re: [boost] New JSON library from the maker of Beast!

On 23. Sep 2019, at 23:56, Vicram Rajagopalan via Boost wrote:

On Mon, Sep 23, 2019 at 10:39 AM Vinnie Falco via Boost wrote:

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On Mon, Sep 23, 2019 at 7:51 AM JF via Boost wrote:

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I know that it is not standard JSON, but do you plan to support comments (// ..., /* ... */)? It would be useful for storing configuration

I used the same approach with the JSON parser that I used with Beast's HTTP parser. That is, a strict parser which strives to adhere to the letter of the spec.

I agree with this approach. The popular nlohmann::json project made the same design decision, and I think their reasoning is quite solid. See here: https://github.com/nlohmann/json#comments-in-json

If you have a common interface between the different parts (e.g. the SAX-style events interface I mentioned), you can have multiple parsers and you can choose which parser to apply in which situation. In our library we have a strict JSON parser and a parser for a slightly extended JSON format that we call JAXN https://github.com/stand-art/jaxn which supports comments, binary data and non-finite values (NaN, Infinity, -Infinity). All other components of the library can be reuse easily and do not depend on the parser. We also have CBOR, UBJSON, MsgPack parsers, you could add TOML or high-performance SIMD parsers, etc.