[cfe-dev] RFC: YAML as an intermediate format for clang::tooling::Replacement data on disk

[Manuel Klimek]

On Thu, Aug 1, 2013 at 4:30 PM, Konstantin Tokarev <annulen at yandex.ru>wrote:

>
> 01.08.2013, 17:59, "Manuel Klimek" <klimek at google.com>:
> > On Thu, Aug 1, 2013 at 3:06 PM, Vane, Edwin <edwin.vane at intel.com>
> wrote:
> >>> -----Original Message-----
> >>> From: Alex Rosenberg [mailto:alexr at ohmantics.com]
> >>> Sent: Thursday, August 01, 2013 1:32 AM
> >>> To: Vane, Edwin
> >>> Cc: Clang Dev List (cfe-dev at cs.uiuc.edu)
> >>> Subject: Re: [cfe-dev] RFC: YAML as an intermediate format for
> >>> clang::tooling::Replacement data on disk
> >>
> >> ...
> >>
> >>> I have wanted for some time for rewriter tools to use diff output that
> can be
> >>> used with existing review tools. If a merge tool is created that
> generates diff, I'd
> >>> probably be less concerned, but I'd still want a way to handle this
> self-contained
> >>> in the LLVM/Clang frameworks without a separate merge process.
> >>
> >> This can still happen. What you're describing is orthogonal to this
> proposal about using YAML as an intermediate representation of serialized
> data between the migrator and replacement coalescing tool. I don't think
> anything here will block your desire from coming true.
> >>
> >> Speaking of JSON, this was suggested on IRC. It seems like it would be
> just as fine as YAML for this situation since there's no need for
> references or comments (yet, anyway). However, LLVM has no generic JSON
> parser, just a specific implementation for compilation databases. The YAML
> reader/writer that LLVM provides is completely generic and available right
> now even if it provides some features we don't need.
> >
> > Note that the compilation databases use the YAML parser. JSON is a
> subset of YAML. I'd also (slightly) prefer to use JSON over YAML for the
> intermediate representation.
>
> Why? YAML has less syntactic overhead.
>

JSON is significantly simpler, and there's only "one way" to express
something. That will be all I contribute to the bike-shedding - I also
think it doesn't really matter much ...
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