[llvm-dev] RFC: Adding a JSON library to LLVM Support

[Sam McCall via llvm-dev]

On Fri, Oct 27, 2017 at 10:06 PM, Pavel Labath <labath at google.com> wrote:

> LLDB has a JSON parser/serializer that we'd like to get rid of.

Ah, sorry for missing that!
What makes you want to get rid of it? Maintenance/duplication, or things
you don't like about using it?
Do you see it as a suitable thing to "promote" up to Support for wider use,
instead?


> The
> main thing that's missing from YamlIO for us to do that is the ability
> to handle (or at very least, not choke on) unknown keys (for example,
> keys that are only generated by an lldb-server from the future --
> backwards/forwards compatibility).
>
Interesting - that certainly sounds doable (not knowing the details).
You'd still need a way to serialize though?


> On 27 October 2017 at 12:53, Sam McCall via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > We don't have a dedicated JSON library in the LLVM tree, I'd like to add
> > one. The pressing need is for clangd, but we have other tools that
> > read/write JSON too.
> >
> > I'm proposing we write a new one, rather than importing a third-party
> > library (licensing/integration reasons), on or extending
> YamlParser/YamlIO
> > (usability/flexibility). I lean towards a design that parses a full DOM
> at
> > once, and provides literal-like syntax for composing documents.
> >
> > I've written a document laying out the reasons for taking this path, and
> my
> > proposal for a design (with links to a prototype)
> > https://docs.google.com/document/d/1OEF9IauWwNuSigZzvvbjc1cVS1uGH
> RyGTXaoy3DjqM4/edit
> > (Comments are enabled, but high-level discussion probably belongs on the
> > list instead.)
> >
> > What do you think? I'm particularly interested in which parts of LLVM
> > produce/consume JSON (or might want to), and what they need. I'm mostly
> > familiar with the stuff in clang-tools-extra.
> >
> > Cheers, Sam
> >
> > _______________________________________________
> > LLVM Developers mailing list
> > llvm-dev at lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
> >
>
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