W dniu 2015-07-29 o 00:37, H. S. Teoh via Digitalmars-d pisze:
On Tue, Jul 28, 2015 at 03:29:02PM -0700, Walter Bright via Digitalmars-d wrote:
[...]
3. Stepping back a bit, when I think of parsing JSON data, I think:
auto ast = inputrange.toJSON();
where toJSON() accepts an input range and produces a container, the
ast. The ast is just a JSON value. Then, I can just query the ast to
see what kind of value it is (using overloading), and walk it as
necessary.
+1. The API should be as simple as possible.
Ideally, I'd say hook it up to std.conv.to for maximum flexibility. Then
you can just use to() to convert between a JSON container and the value
that it represents (assuming the types are compatible).
OTOH, some people might want the option of parser-driven data processing
instead (e.g. the JSON data is very large and we don't want to store the
whole thing in memory at once). I'm not sure what a good API for that
would be, though.
Here's mine range based parser, you can parse 1 TB json file without a
single allocation. It needs heavy polishing, but I didnt have time/need
to do it. Basically a WIP, but maybe someone will find it useful.
https://github.com/pszturmaj/json-streaming-parser
