[clang] [clang-tools-extra] [clang-tidy] Add new check `modernize-use-designated-initializers` (PR #80541)

[Sam McCall via cfe-commits]

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In-Reply-To: <llvm.org/llvm/llvm-project/pull/80541 at github.com>


sam-mccall wrote:

Hey folks,

I'm glad the clangd code for designators was useful, but this dep from clangd into the middle of tidy::utils isn't really OK - clangd depends on tidy only for the purposes of running tidy checks. It would have been appropriate to have a clangd reviewer on this.

AFAIK the best place we have for code shared between tools is as a new library under `Tooling` - it's not a perfect fit, but there's precedent for this in `Tooling/Inclusions`. As a shared library, this would also need unit tests distinct from the integration tests in tidy+clangd.

I'm not sure how best to proceed here - if it's possible to agree soon on a fix forward, let's do that, otherwise I'd plan to revert next week and you can fix as you see fit (extract a shared library, copy the code, etc).

https://github.com/llvm/llvm-project/pull/80541