ale/ale_linters/rust/rls.vim

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" Author: w0rp <devw0rp@gmail.com>
" Description: A language server for Rust
call ale#Set('rust_rls_executable', 'rls')
call ale#Set('rust_rls_toolchain', 'nightly')
function! ale_linters#rust#rls#GetExecutable(buffer) abort
return ale#Var(a:buffer, 'rust_rls_executable')
endfunction
function! ale_linters#rust#rls#GetCommand(buffer) abort
let l:executable = ale_linters#rust#rls#GetExecutable(a:buffer)
let l:toolchain = ale#Var(a:buffer, 'rust_rls_toolchain')
if empty(l:toolchain)
return ale#Escape(l:executable)
else
return ale#Escape(l:executable) . ' +' . ale#Escape(l:toolchain)
endif
endfunction
function! ale_linters#rust#rls#GetProjectRoot(buffer) abort
let l:cargo_file = ale#path#FindNearestFile(a:buffer, 'Cargo.toml')
return !empty(l:cargo_file) ? fnamemodify(l:cargo_file, ':h') : ''
endfunction
call ale#linter#Define('rust', {
\ 'name': 'rls',
\ 'lsp': 'stdio',
\ 'executable_callback': 'ale_linters#rust#rls#GetExecutable',
\ 'command_callback': 'ale_linters#rust#rls#GetCommand',
\ 'language': 'rust',
\ 'project_root_callback': 'ale_linters#rust#rls#GetProjectRoot',
\})