[cfe-dev] ClangD

[Alex L via cfe-dev]

Thanks Manuel, I'm quite excited to hear that about ClangD!

I have a couple of questions:
Do you think ClangD would be able to replace libclang in the future? Would
it be possible to deprecate libclang for IDE use after ClangD catches up to
it, or should we keep libclang as it is even after that point?

On 25 January 2017 at 13:11, Manuel Klimek via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> Hi fellow clang devs,
>
> we wanted to let you know that we're (finally) starting up work on ClangD,
> which you might know from email threads such as [1] (June 2012!).
>
> In the meantime, YCM had done a good enough job at packaging up a libclang
> interface to our favorite editors, and other priorities (like modules) have
> eaten up a lot of folks priority lunches.
>
> What has changed?
> 1. YCM is starting to develop more and more into a language multiplexer,
> with other languages (Go, Typescript, etc) providing their own servers to
> talk to
> 2. MS has created a language server protocol [2], which already has both a
> bunch of client and server implementations
> 3. Debugging through python into libclang crashers is a pain and eating
> our support resources
> 4. While libclang is a good abstraction if you want to have something run
> in your process with close coupling, a standard protocol like the language
> server protocol seems like a better way to allow fast iterations on the
> server implementation without the need to keep backward-compatibility hacks
> through a restrictive C API.
>
> One of the cool things about the MS language server protocol is that it
> seems to not actually do any networking, which means that we do not need to
> introduce any new dependencies into clang-tools-extra, which is where we
> want to start developing this.
>
> If you have any thoughts / concerns let me know; otherwise look forward to
> code reviews on initial ClangD dropping by :D
>
> Cheers,
> /Manuel
>
> [1] http://lists.llvm.org/pipermail/cfe-dev/2012-June/022028.html
> [2] https://github.com/Microsoft/language-server-protocol
>
>
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