How to make clangd support more file types

Language Server Protocol (LSP)
1

How to make clangd support more file types(different file extensions).
e.g. .ixx、.mpp（C++20 Modules）

2

override filetypes in the setup {} call to be a list that includes all filetypes you wish clangd to operate on. I would copy the defaults from clangd.lua

2 Likes
3

Hmm… It’s not OK.
This is my config:

require 'lspconfig'.clangd.setup {
  filetypes = { "c", "cpp", "cc", "mpp", "ixx" }
}

It’s OK for c, cpp and cc, but not OK for mpp or ixx.

4

What is :set ft? in an mpp/ixx file? What does :LspInfo say when you open one of those files? Make sure you are not calling setup {} twice.

1 Like
5 
:set ft?
  filetype=

:LspInfo
0 client(s) attached to this buffer:
6

It looks like you haven’t set up a filetype plugin for mpp or ixx. Trivially you can add the following two lines to your config, but you probably want to search around for a vim-mpp/ixx.

vim.cmd [[ autocmd BufRead,BufNewFile *.mpp set filetype=mpp ]]

vim.cmd [[ autocmd BufRead,BufNewFile *.ixx set filetype=ixx ]]

1 Like
7

I added them to my init.vim file, but then I got an error: E682: Invalid search pattern or delimiter

8

I deleted vim.cmd [[ ]] then the error disappeared.
But the clangd said:"Unable to handle compilation, expected exactly one compiler job in ’ ’ "

:set ft?
  filetype=mpp

:LspInfo
1 client(s) attached to this buffer: 
 
Client: clangd (id: 1, pid: 8596, bufnr: [1])
 	filetypes:       c, cpp, objc, objcpp, cc, mpp, ixx
 	autostart:       true
 	root directory:  C:/Users/***/AppData/Local/nvim
 	cmd:             clangd
9

Did you succesfully generate a compile_commands.json for your project?

1 Like
10

No, I don’t.
But I try to add a compile_commands.json
And then, it’s ok.
Thank you!