87 lines
2.5 KiB
VimL
87 lines
2.5 KiB
VimL
" Author: Daniel Schemala <istjanichtzufassen@gmail.com>
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" Description: rustc invoked by cargo for rust files
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call ale#Set('rust_cargo_use_check', 1)
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call ale#Set('rust_cargo_check_all_targets', 1)
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let s:version_cache = {}
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function! ale_linters#rust#cargo#GetCargoExecutable(bufnr) abort
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if ale#path#FindNearestFile(a:bufnr, 'Cargo.toml') isnot# ''
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return 'cargo'
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else
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" if there is no Cargo.toml file, we don't use cargo even if it exists,
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" so we return '', because executable('') apparently always fails
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return ''
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endif
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endfunction
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function! ale_linters#rust#cargo#VersionCheck(buffer) abort
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if has_key(s:version_cache, 'cargo')
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return ''
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endif
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return 'cargo --version'
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endfunction
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function! s:GetVersion(executable, output) abort
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let l:version = get(s:version_cache, a:executable, [])
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for l:match in ale#util#GetMatches(a:output, '\v\d+\.\d+\.\d+')
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let l:version = ale#semver#Parse(l:match[0])
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let s:version_cache[a:executable] = l:version
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endfor
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return l:version
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endfunction
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function! s:CanUseCargoCheck(buffer, version) abort
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" Allow `cargo check` to be disabled.
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if !ale#Var(a:buffer, 'rust_cargo_use_check')
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return 0
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endif
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return !empty(a:version)
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\ && ale#semver#GreaterOrEqual(a:version, [0, 17, 0])
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endfunction
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function! s:CanUseAllTargets(buffer, version) abort
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if !ale#Var(a:buffer, 'rust_cargo_use_check')
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return 0
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endif
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if !ale#Var(a:buffer, 'rust_cargo_check_all_targets')
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return 0
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endif
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return !empty(a:version)
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\ && ale#semver#GreaterOrEqual(a:version, [0, 22, 0])
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endfunction
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function! ale_linters#rust#cargo#GetCommand(buffer, version_output) abort
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let l:version = s:GetVersion('cargo', a:version_output)
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let l:command = s:CanUseCargoCheck(a:buffer, l:version)
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\ ? 'check'
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\ : 'build'
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let l:all_targets = s:CanUseAllTargets(a:buffer, l:version)
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\ ? ' --all-targets'
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\ : ''
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return 'cargo '
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\ . l:command
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\ . l:all_targets
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\ . ' --frozen --message-format=json -q'
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endfunction
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call ale#linter#Define('rust', {
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\ 'name': 'cargo',
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\ 'executable_callback': 'ale_linters#rust#cargo#GetCargoExecutable',
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\ 'command_chain': [
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\ {'callback': 'ale_linters#rust#cargo#VersionCheck'},
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\ {'callback': 'ale_linters#rust#cargo#GetCommand'},
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\ ],
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\ 'callback': 'ale#handlers#rust#HandleRustErrors',
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\ 'output_stream': 'both',
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\ 'lint_file': 1,
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\})
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