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ultimate-vim/sources_non_forked/ale/ale_linters/c/clangd.vim

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" Author: Andrey Melentyev <andrey.melentyev@protonmail.com>
" Description: Clangd language server
call ale#Set('c_clangd_executable', 'clangd')
call ale#Set('c_clangd_options', '')
function! ale_linters#c#clangd#GetProjectRoot(buffer) abort
let l:project_root = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
endfunction
function! ale_linters#c#clangd#GetExecutable(buffer) abort
return ale#Var(a:buffer, 'c_clangd_executable')
endfunction
function! ale_linters#c#clangd#GetCommand(buffer) abort
let l:executable = ale_linters#c#clangd#GetExecutable(a:buffer)
let l:options = ale#Var(a:buffer, 'c_clangd_options')
return ale#Escape(l:executable) . (!empty(l:options) ? ' ' . l:options : '')
endfunction
call ale#linter#Define('c', {
\ 'name': 'clangd',
\ 'lsp': 'stdio',
\ 'executable_callback': 'ale_linters#c#clangd#GetExecutable',
\ 'command_callback': 'ale_linters#c#clangd#GetCommand',
\ 'project_root_callback': 'ale_linters#c#clangd#GetProjectRoot',
\})