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" Author: w0rp <devw0rp@gmail.com>
" Description: ghc for Haskell files
if exists('g:loaded_ale_linters_haskell_ghc')
finish
endif
let g:loaded_ale_linters_haskell_ghc = 1
function! ale_linters#haskell#ghc#Handle(buffer, lines)
" Look for lines like the following.
"
" /dev/stdin:28:26: Not in scope: `>>>>>'
let pattern = '^[^:]\+:\(\d\+\):\(\d\+\): \(.\+\)$'
let output = []
" For some reason the output coming out of the GHC through the wrapper
" script breaks the lines up in strange ways. So we have to join some
" lines back together again.
let corrected_lines = []
for line in a:lines
if len(matchlist(line, pattern)) > 0
call add(corrected_lines, line)
if line !~# ': error:$'
call add(corrected_lines, '')
endif
elseif line ==# ''
call add(corrected_lines, line)
else
if len(corrected_lines) > 0
if corrected_lines[-1] =~# ': error:$'
let line = substitute(line, '\v^\s+', ' ', '')
endif
let corrected_lines[-1] .= line
endif
endif
endfor
for line in corrected_lines
let l:match = matchlist(line, pattern)
if len(l:match) == 0
continue
endif
call add(output, {
\ 'bufnr': a:buffer,
\ 'lnum': l:match[1] + 0,
\ 'vcol': 0,
\ 'col': l:match[2] + 0,
\ 'text': l:match[3],
\ 'type': 'E',
\ 'nr': -1,
\})
endfor
return output
endfunction
call ALEAddLinter('haskell', {
\ 'name': 'ghc',
\ 'output_stream': 'stderr',
\ 'executable': 'ghc',
\ 'command': g:ale#util#stdin_wrapper . ' .hs ghc -fno-code -v0',
\ 'callback': 'ale_linters#haskell#ghc#Handle',
\})
call ALEAddLinter('haskell', {
\ 'name': 'stack-ghc',
\ 'output_stream': 'stderr',
\ 'executable': 'stack',
\ 'command': g:ale#util#stdin_wrapper . ' .hs stack ghc -- -fno-code -v0',
\ 'callback': 'ale_linters#haskell#ghc#Handle',
\})
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