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

On 9/23/19 9:11 AM, Vinnie Falco via Boost wrote:

On Mon, Sep 23, 2019 at 8:58 AM Bjorn Reese via Boost wrote:

...

...online parser... A push parser (SAX)... A tree parser (DOM)

I have no experience with these terms other than occasionally coming across them in my Google searching adventures. The parsers that I have written take as input one or more buffers of contiguous characters, and produce as "output" a series of calls to abstract member functions which are implemented in the derived class. These calls represent tokens or events, such as "key string", "object begin", "array end". So what would we call this in the taxonomy above?

Hmmmm - sounds like a job for Boost Spirit ! This is what I used 15+ years ago to create a special purpose for the limited subset of XML that boost serialization library. In all that time, through innumerable variations of compilers, linkers, C++ versions, ... everything - modification has been required on only a couple of cases. And by separating syntax from actions, it has permitted other collaborators to discover and suggest fixes to weird corner cases. The code seems pretty efficient too - at least no one has complained about that aspect - or another other either. The only complain would be slow compile time. But since the serialization library is compiled and the code is only compiled when the grammar changes - it's not really an issue. This software and its approach has been under appreciated - need a good CppCon talk on this subject. Food for thought. Robert Ramey

Thanks

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