65 lines
2.1 KiB
VimL
65 lines
2.1 KiB
VimL
" Author: Yen3 <yen3rc@gmail.com>
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" Description: A language server for haskell
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" The file is based on hie.vim (author: Luxed
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" <devildead13@gmail.com>). It search more project root files.
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"
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call ale#Set('haskell_hls_executable', 'haskell-language-server-wrapper')
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call ale#Set('haskell_hls_config', {})
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function! ale_linters#haskell#hls#FindRootFile(buffer) abort
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let l:serach_root_files = [
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\ 'stack.yaml',
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\ 'cabal.project',
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\ 'package.yaml',
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\ 'hie.yaml'
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\ ]
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for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
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for l:root_file in l:serach_root_files
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if filereadable(l:path . l:root_file)
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return l:path
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endif
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endfor
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endfor
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return ''
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endfunction
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function! ale_linters#haskell#hls#GetProjectRoot(buffer) abort
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" Search for the project file first
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let l:project_file = ale_linters#haskell#hls#FindRootFile(a:buffer)
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" If it's empty, search for the cabal file
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if empty(l:project_file)
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" Search all of the paths except for the root filesystem path.
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let l:paths = join(
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\ ale#path#Upwards(expand('#' . a:buffer . ':p:h'))[:-2],
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\ ','
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\)
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let l:project_file = globpath(l:paths, '*.cabal')
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endif
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" If we still can't find one, use the current file.
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if empty(l:project_file)
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let l:project_file = expand('#' . a:buffer . ':p')
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endif
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return fnamemodify(l:project_file, ':h')
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endfunction
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function! ale_linters#haskell#hls#GetCommand(buffer) abort
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let l:executable = ale#Var(a:buffer, 'haskell_hls_executable')
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return ale#handlers#haskell_stack#EscapeExecutable(l:executable,
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\ 'haskell-language-server-wrapper')
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\ . ' --lsp'
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endfunction
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call ale#linter#Define('haskell', {
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\ 'name': 'hls',
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\ 'lsp': 'stdio',
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\ 'command': function('ale_linters#haskell#hls#GetCommand'),
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\ 'executable': {b -> ale#Var(b, 'haskell_hls_executable')},
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\ 'project_root': function('ale_linters#haskell#hls#GetProjectRoot'),
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\ 'lsp_config': {b -> ale#Var(b, 'haskell_hls_config')},
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\})
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