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" Author: Daniel Schemala <istjanichtzufassen@gmail.com>
" Description: rustc invoked by cargo for rust files
call ale#Set('rust_cargo_use_check', 1)
call ale#Set('rust_cargo_check_all_targets', 1)
function! ale_linters#rust#cargo#GetCargoExecutable(bufnr) abort
if ale#path#FindNearestFile(a:bufnr, 'Cargo.toml') isnot# ''
return 'cargo'
else
" if there is no Cargo.toml file, we don't use cargo even if it exists,
" so we return '', because executable('') apparently always fails
return ''
endif
endfunction
function! ale_linters#rust#cargo#VersionCheck(buffer) abort
return !ale#semver#HasVersion('cargo')
\ ? 'cargo --version'
\ : ''
endfunction
function! ale_linters#rust#cargo#GetCommand(buffer, version_output) abort
let l:version = ale#semver#GetVersion('cargo', a:version_output)
let l:use_check = ale#Var(a:buffer, 'rust_cargo_use_check')
\ && ale#semver#GTE(l:version, [0, 17, 0])
let l:use_all_targets = l:use_check
\ && ale#Var(a:buffer, 'rust_cargo_check_all_targets')
\ && ale#semver#GTE(l:version, [0, 22, 0])
return 'cargo '
\ . (l:use_check ? 'check' : 'build')
\ . (l:use_all_targets ? ' --all-targets' : '')
\ . ' --frozen --message-format=json -q'
endfunction
call ale#linter#Define('rust', {
\ 'name': 'cargo',
\ 'executable_callback': 'ale_linters#rust#cargo#GetCargoExecutable',
\ 'command_chain': [
\ {'callback': 'ale_linters#rust#cargo#VersionCheck'},
\ {'callback': 'ale_linters#rust#cargo#GetCommand'},
\ ],
\ 'callback': 'ale#handlers#rust#HandleRustErrors',
\ 'output_stream': 'both',
\ 'lint_file': 1,
\})
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