diff --git a/ale_linters/haskell/ghc.vim b/ale_linters/haskell/ghc.vim index 82bf061b..275cf32f 100644 --- a/ale_linters/haskell/ghc.vim +++ b/ale_linters/haskell/ghc.vim @@ -1,12 +1,69 @@ " Author: w0rp " 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 l:pattern = '^[^:]\+:\(\d\+\):\(\d\+\): \(.\+\)$' + let l:output = [] + + " For some reason the output coming out of the GHC through the wrapper + " script breaks the lines up in strange ways. So we have to join some + " lines back together again. + let l:corrected_lines = [] + + for l:line in a:lines + if len(matchlist(l:line, l:pattern)) > 0 + call add(l:corrected_lines, l:line) + if l:line !~# ': error:$' + call add(l:corrected_lines, '') + endif + elseif l:line ==# '' + call add(l:corrected_lines, l:line) + else + if len(l:corrected_lines) > 0 + if l:corrected_lines[-1] =~# ': error:$' + let l:line = substitute(l:line, '\v^\s+', ' ', '') + endif + let l:corrected_lines[-1] .= l:line + endif + endif + endfor + + for l:line in l:corrected_lines + let l:match = matchlist(l:line, l:pattern) + + if len(l:match) == 0 + continue + endif + + call add(l: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 l:output +endfunction + call ale#linter#Define('haskell', { \ 'name': 'ghc', \ 'output_stream': 'stderr', \ 'executable': 'ghc', \ 'command': g:ale#util#stdin_wrapper . ' .hs ghc -fno-code -v0', -\ 'callback': 'ale#handlers#HandleUnixFormatAsError', +\ 'callback': 'ale_linters#haskell#ghc#Handle', \}) call ale#linter#Define('haskell', { @@ -14,5 +71,5 @@ call ale#linter#Define('haskell', { \ 'output_stream': 'stderr', \ 'executable': 'stack', \ 'command': g:ale#util#stdin_wrapper . ' .hs stack ghc -- -fno-code -v0', -\ 'callback': 'ale#handlers#HandleUnixFormatAsError', +\ 'callback': 'ale_linters#haskell#ghc#Handle', \})