96 lines
3 KiB
VimL
96 lines
3 KiB
VimL
" Author: Magnus Ottenklinger - https://github.com/evnu
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let g:ale_erlang_erlc_options = get(g:, 'ale_erlang_erlc_options', '')
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function! ale_linters#erlang#erlc#GetCommand(buffer) abort
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let l:output_file = ale#util#Tempname()
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call ale#command#ManageFile(a:buffer, l:output_file)
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return 'erlc -o ' . ale#Escape(l:output_file)
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\ . ' ' . ale#Var(a:buffer, 'erlang_erlc_options')
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\ . ' %t'
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endfunction
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function! ale_linters#erlang#erlc#Handle(buffer, lines) abort
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" Matches patterns like the following:
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"
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" error.erl:4: variable 'B' is unbound
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" error.erl:3: Warning: function main/0 is unused
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" error.erl:4: Warning: variable 'A' is unused
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let l:pattern = '\v^([a-zA-Z]?:?[^:]+):(\d+): (Warning: )?(.+)$'
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" parse_transforms are a special case. The error message does not indicate a location:
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" error.erl: undefined parse transform 'some_parse_transform'
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let l:pattern_parse_transform = '\v(undefined parse transform .*)$'
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let l:output = []
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let l:pattern_no_module_definition = '\v(no module definition)$'
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let l:pattern_unused = '\v(.* is unused)$'
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let l:is_hrl = fnamemodify(bufname(a:buffer), ':e') is# 'hrl'
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for l:line in a:lines
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let l:match = matchlist(l:line, l:pattern)
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" Determine if the output indicates an error. We distinguish between two cases:
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"
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" 1) normal errors match l:pattern
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" 2) parse_transform errors match l:pattern_parse_transform
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"
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" If none of the patterns above match, the line can be ignored
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if len(l:match) == 0 " not a 'normal' warning or error
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let l:match_parse_transform = matchlist(l:line, l:pattern_parse_transform)
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if len(l:match_parse_transform) == 0 " also not a parse_transform error
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continue
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endif
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call add(l:output, {
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\ 'bufnr': a:buffer,
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\ 'lnum': 0,
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\ 'col': 0,
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\ 'type': 'E',
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\ 'text': l:match_parse_transform[0],
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\})
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continue
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endif
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let l:line = l:match[2]
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let l:warning_or_text = l:match[3]
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let l:text = l:match[4]
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" If this file is a header .hrl, ignore the following expected messages:
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" - 'no module definition'
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" - 'X is unused'
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if l:is_hrl && (
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\ match(l:text, l:pattern_no_module_definition) != -1
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\ || match(l:text, l:pattern_unused) != -1
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\)
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continue
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endif
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if !empty(l:warning_or_text)
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let l:type = 'W'
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else
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let l:type = 'E'
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endif
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call add(l:output, {
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\ 'bufnr': a:buffer,
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\ 'lnum': l:line,
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\ 'col': 0,
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\ 'type': l:type,
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\ 'text': l:text,
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\})
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endfor
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return l:output
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endfunction
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call ale#linter#Define('erlang', {
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\ 'name': 'erlc',
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\ 'executable': 'erlc',
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\ 'command': function('ale_linters#erlang#erlc#GetCommand'),
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\ 'callback': 'ale_linters#erlang#erlc#Handle',
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\})
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