65 lines
2.5 KiB
VimL
65 lines
2.5 KiB
VimL
" Author: buffalocoder - https://github.com/buffalocoder
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" Description: Elm linting in Ale. Closely follows the Syntastic checker in https://github.com/ElmCast/elm-vim.
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function! ale_linters#elm#make#Handle(buffer, lines) abort
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let l:output = []
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let l:is_windows = has('win32')
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let l:temp_dir = l:is_windows ? $TMP : $TMPDIR
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for l:line in a:lines
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if l:line[0] ==# '['
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let l:errors = json_decode(l:line)
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for l:error in l:errors
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" Check if file is from the temp directory.
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" Filters out any errors not related to the buffer.
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if l:is_windows
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let l:file_is_buffer = l:error.file[0:len(l:temp_dir) - 1] ==? l:temp_dir
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else
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let l:file_is_buffer = l:error.file[0:len(l:temp_dir) - 1] ==# l:temp_dir
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endif
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if l:file_is_buffer
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call add(l:output, {
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\ 'bufnr': a:buffer,
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\ 'lnum': l:error.region.start.line,
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\ 'col': l:error.region.start.column,
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\ 'type': (l:error.type ==? 'error') ? 'E' : 'W',
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\ 'text': l:error.overview,
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\ 'detail': l:error.overview . "\n\n" . l:error.details
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\})
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endif
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endfor
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endif
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endfor
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return l:output
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endfunction
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" Return the command to execute the linter in the projects directory.
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" If it doesn't, then this will fail when imports are needed.
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function! ale_linters#elm#make#GetCommand(buffer) abort
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let l:elm_package = ale#path#FindNearestFile(a:buffer, 'elm-package.json')
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if empty(l:elm_package)
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let l:dir_set_cmd = ''
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else
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let l:root_dir = fnamemodify(l:elm_package, ':p:h')
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let l:dir_set_cmd = 'cd ' . shellescape(l:root_dir) . ' && '
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endif
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" The elm-make compiler, at the time of this writing, uses '/dev/null' as
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" a sort of flag to tell the compiler not to generate an output file,
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" which is why this is hard coded here.
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" Source: https://github.com/elm-lang/elm-make/blob/master/src/Flags.hs
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let l:elm_cmd = 'elm-make --report=json --output='.shellescape('/dev/null')
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return l:dir_set_cmd . ' ' . l:elm_cmd . ' %t'
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endfunction
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call ale#linter#Define('elm', {
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\ 'name': 'make',
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\ 'executable': 'elm-make',
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\ 'output_stream': 'both',
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\ 'command_callback': 'ale_linters#elm#make#GetCommand',
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\ 'callback': 'ale_linters#elm#make#Handle'
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\})
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