[PATCH] D35406: [clangd] Replace ASTUnit with manual AST management.

[Ilya Biryukov via Phabricator via cfe-commits]

ilya-biryukov added a comment.

The idea is to allows us changing the way we manage/rebuild PCHs and ASTs.
ASTUnit is used for many things and has a fairly complicated and verbose interface and does a lot of mutations all other the place inside it, so making changes to it is not particularly easy.
On the other hand, it doesn't add a lot of value for clangd specifically, since we use a very simple subset of it.

The next step I planned was to allow code completion to be run in parallel with recomputing preamble/computing diagnostics. (And in general, allow multiple TUs to be processed in parallel).
That would probably involve changes to the interface, so we should definitely sync with you on the work you've been doing.
And we were also planning to look into indexing at a later point, so discussing the design there might be interesting as well.


https://reviews.llvm.org/D35406