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+" Author: Ye Jingchen <ye.jingchen@gmail.com>, Ben Falconer <ben@falconers.me.uk>, jtalowell <jtalowell@protonmail.com>
+" Description: A language server for Objective-C
+
+call ale#Set('objc_ccls_executable', 'ccls')
+call ale#Set('objc_ccls_init_options', {})
+
+function! ale_linters#objc#ccls#GetProjectRoot(buffer) abort
+ let l:project_root = ale#path#FindNearestFile(a:buffer, '.ccls-root')
+
+ if empty(l:project_root)
+ let l:project_root = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
+ elseif empty(l:project_root)
+ let l:project_root = ale#path#FindNearestFile(a:buffer, '.ccls')
+ endif
+
+ return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
+endfunction
+
+function! ale_linters#objc#ccls#GetInitializationOptions(buffer) abort
+ return ale#Var(a:buffer, 'objc_ccls_init_options')
+endfunction
+
+call ale#linter#Define('objc', {
+\ 'name': 'ccls',
+\ 'lsp': 'stdio',
+\ 'executable_callback': ale#VarFunc('objc_ccls_executable'),
+\ 'command': '%e',
+\ 'project_root_callback': 'ale_linters#objc#ccls#GetProjectRoot',
+\ 'initialization_options_callback': 'ale_linters#objc#ccls#GetInitializationOptions',
+\})