vim-config/after/ftplugin/haskell.vim

setlocal ts=2 sw=2 expandtab

"set background=light
"set guifont=Neep\ Medium\ Semi-Condensed\ 18

" tags
call CmdAlias('hasktags', '!hasktags -c .<CR>')

" from
" https://raw.githubusercontent.com/begriffs/haskell-vim-now/master/git-hscope
call CmdAlias('codex', 'call system("haskell-ctags")<CR><CR>call LoadHscope()<CR>')


map <leader>ctg :codex<CR>
set tags=tags;/,codex.tags;/

" classic ctags jump
" nnoremap <leader>gd <C-]>

nnoremap <silent> <leader>cgd :cs find g <C-R>=expand("<cword>")<CR><CR>
nnoremap <silent> <C-\> :cs find c <C-R>=expand("<cword>")<CR><CR>

set cscopeprg=do_at_stack_root\ hscope
set csre
set csto=1 " search codex tags first
set nocst
" set cscopequickfix=s-,c-,d-,i-,t-,e-,a-

function! LoadHscope()
	set nocscopeverbose " suppress 'duplicate connection' error
	let hsf = findfile("hscope.out", ".;")
	if filereadable(hsf)
		exe "cs add " . hsf
	elseif $HSCOPE_DB != ""
		cs add $HSCOPE_DB
	endif
	set cscopeverbose
endfunction
au BufEnter /*.hs call LoadHscope()




"hoogle
nnoremap <leader>ho :Hoogle<CR>
nnoremap <leader>hc :HoogleClose<CR>


" haskell-vim
let g:haskell_classic_highlighting = 1
let g:haskell_indent_disable = 1
" let g:haskell_enable_quantification = 1
" let g:haskell_enable_recursivedo = 1
" let g:haskell_enable_arrowsyntax = 1
" let g:haskell_enable_pattern_synonyms = 1
" let g:haskell_enable_typeroles = 1
" let g:haskell_indent_if = 3
" let g:haskell_indent_case = 5
" let g:haskell_indent_let = 4
" let g:haskell_indent_where = 6
" let g:haskell_indent_do = 3
" let g:haskell_indent_in = 1


" haskellmode-vim
function! HaskellDocCurrentWord()
        let word = expand("<cword>")
        exe "IDoc " . word
endfunction

" done by LSP now
nmap <F7> :call HaskellDocCurrentWord()<CR><CR>

nmap <silent> <F3> :silent update <bar> HsimportModule<CR>
nmap <silent> <F4> :silent update <bar> HsimportSymbol<CR>


" liquid-types
let g:vim_annotations_offset = '/.liquid/'


" autocmd BufWritePost *.hs call s:check_and_lint()
" function! s:check_and_lint()
  " let l:path = expand('%:p')
  " let l:qflist = ghcmod#make('check', l:path)
  " call extend(l:qflist, ghcmod#make('lint', l:path))
  " call setqflist(l:qflist)
  " cwindow
  " if empty(l:qflist)
    " echo "No errors found"
  " endif
" endfunction



" LSP
let g:LanguageClient_autoStart = 0
let g:LanguageClient_serverCommands = {
	\ 'haskell': ['hie-wrapper', '--lsp', '-d', '-l', $HOME.'/lang-server-lnvim.log'],
	\ }
" we use ALE instead
let g:LanguageClient_diagnosticsEnable = 0

" nnoremap <leader>ld :call LanguageClient#textDocument_definition()<CR>
" nnoremap <leader>lr :call LanguageClient#textDocument_rename()<CR>
" nnoremap <leader>lf :call LanguageClient#textDocument_formatting()<CR>
" nnoremap <leader>lt :call LanguageClient#textDocument_typeDefinition()<CR>
" nnoremap <leader>lx :call LanguageClient#textDocument_references()<CR>
" nnoremap <leader>la :call LanguageClient_workspace_applyEdit()<CR>
" nnoremap <leader>lc :call LanguageClient#textDocument_completion()<CR>
" nnoremap <leader>lh :call LanguageClient#textDocument_hover()<CR>
" nnoremap <leader>ls :call LanguageClient_textDocument_documentSymbol()<CR>
" nnoremap <leader>lm :call LanguageClient_contextMenu()<CR>
" nnoremap <F6> :call LanguageClient#textDocument_hover()<CR>


" deoplete
"call deoplete#custom#option('sources',{
"	\ '_': ['buffer'],
"	\ 'haskell': ['neosnippet', 'buffer', 'file', 'neco-ghc']
"	\ })
"	" \ 'haskell': ['neosnippet', 'buffer', 'file', 'neco-ghc']
"call deoplete#enable()
"call deoplete#enable_logging('DEBUG', $HOME . '/deoplete.log')
"" inoremap <expr><tab> pumvisible() ? "\<c-n>" : "\<tab>"

let g:ghcmod_hlint_options = ['--ignore=Eta reduce $']

" ALE
let g:ale_enabled = 0
let g:ale_linters = {'haskell':[], 'c':['clang']}
" let g:ale_linters = {'haskell':['ghc-mod', 'hdevtools', 'argon'], 'c':['clang']}
" let g:ale_fixers = {
	" \    'haskell': ['brittany'],
	" \}
let g:ale_haskell_hdevtools_options = "-g '-Wall' -g '-Wno-orphans'"
let g:ale_haskell_argon_error_level = 14
let g:ale_haskell_argon_warn_level = 10
let g:ale_haskell_argon_info_level = 6

" completion
"
" neco-ghc
" let g:necoghc_enable_detailed_browse = 1
" let g:haskellmode_completion_ghc = 0
" autocmd FileType haskell setlocal omnifunc=necoghc#omnifunc
" let g:ycm_semantic_triggers = {'haskell' : ['.']}

" let g:ycm_language_server = [ { 'name': 'haskell', 'filetypes': [ 'haskell', 'hs', 'lhs' ], 'cmdline': [ 'hie-wrapper' ], 'project_root_files': [ '.stack.yaml', 'cabal.config', 'package.yaml', 'cabal.project' ] } ]



" clear search
" nmap <F2> :noh<CR>:GhcModTypeClear<CR>
" imap <F2> <C-O>:noh<CR>:GhcModTypeClear<CR>

" unmap <F3>
" unmap <F4>

" nmap <F6> :GhcModType<CR>

" for intero
" if has("nvim")
	" let g:ale_enabled = 0

	" " let g:intero_backend = {
			" " \ 'command': 'cabal new-repl',
			" " \ 'options': '',
			" " \ 'cwd': expand('%:p:h'),
			" " \}

	" " Intero starts automatically. Set this if you'd like to prevent that.
	" let g:intero_start_immediately = 1

	" " Enable type information on hover (when holding cursor at point for ~1 second).
	" let g:intero_type_on_hover = 1

	" " Change the intero window size; default is 10.
	" let g:intero_window_size = 15

	" " Sets the intero window to split vertically; default is horizontal
	" " let g:intero_vertical_split = 1

	" " let g:intero_ghci_options = '-dynamic'

	" " OPTIONAL: Make the update time shorter, so the type info will trigger faster.
	" set updatetime=1000

let g:neoformat_enabled_haskell = ['brittany']



	" map <silent> <leader>t <Plug>InteroGenericType
	" nnoremap <silent> <leader>jd :InteroGoToDef<CR>
	" map <silent> <leader>T <Plug>InteroType
	" nnoremap <silent> <leader>it :InteroTypeInsert<CR>
	" nnoremap <leader>ist :InteroSetTargets<SPACE>
" endif




" ============ coc.nvim ===========
" markdown rendering of code blocks
let g:markdown_fenced_languages = ['haskell']

" if hidden is not set, TextEdit might fail.
set hidden

" Some servers have issues with backup files, see #649
set nobackup
set nowritebackup

" Better display for messages
"set cmdheight=2

" You will have bad experience for diagnostic messages when it's default 4000.
set updatetime=300

" don't give |ins-completion-menu| messages.
set shortmess+=c

" always show signcolumns
set signcolumn=yes

" Use tab for trigger completion with characters ahead and navigate.
" Use command ':verbose imap <tab>' to make sure tab is not mapped by other plugin.
inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction

" Use <c-space> to trigger completion.
inoremap <silent><expr> <c-space> coc#refresh()

" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current position.
" Coc only does snippet and additional edit on confirm.
inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
" Or use `complete_info` if your vim support it, like:
" inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"

" Use `[g` and `]g` to navigate diagnostics
nmap <silent> [g <Plug>(coc-diagnostic-prev)
nmap <silent> ]g <Plug>(coc-diagnostic-next)

" Remap keys for gotos
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Use K to show documentation in preview window
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  else
    call CocAction('doHover')
  endif
endfunction

" Highlight symbol under cursor on CursorHold
autocmd CursorHold * silent call CocActionAsync('highlight')

" Remap for rename current word
nmap <leader>rn <Plug>(coc-rename)

" Remap for format selected region
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

augroup mygroup
  autocmd!
  " Setup formatexpr specified filetype(s).
  autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
  " Update signature help on jump placeholder
  autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
augroup end

" Remap for do codeAction of selected region, ex: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap for do codeAction of current line
nmap <leader>ac  <Plug>(coc-codeaction)
" Fix autofix problem of current line
nmap <leader>qf  <Plug>(coc-fix-current)

" Create mappings for function text object, requires document symbols feature of languageserver.
xmap if <Plug>(coc-funcobj-i)
xmap af <Plug>(coc-funcobj-a)
omap if <Plug>(coc-funcobj-i)
omap af <Plug>(coc-funcobj-a)

" Use <TAB> for select selections ranges, needs server support, like: coc-tsserver, coc-python
nmap <silent> <TAB> <Plug>(coc-range-select)
xmap <silent> <TAB> <Plug>(coc-range-select)

" Use `:Format` to format current buffer
command! -nargs=0 Format :call CocAction('format')

" Use `:Fold` to fold current buffer
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" use `:OR` for organize import of current buffer
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')

" Add status line support, for integration with other plugin, checkout `:h coc-status`
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}

" Using CocList
" Show all diagnostics
nnoremap <silent> <space>a  :<C-u>CocList diagnostics<cr>
" Manage extensions
nnoremap <silent> <space>e  :<C-u>CocList extensions<cr>
" Show commands
nnoremap <silent> <space>c  :<C-u>CocList commands<cr>
" Find symbol of current document
nnoremap <silent> <space>o  :<C-u>CocList outline<cr>
" Search workspace symbols
nnoremap <silent> <space>s  :<C-u>CocList -I symbols<cr>
" Do default action for next item.
nnoremap <silent> <space>j  :<C-u>CocNext<CR>
" Do default action for previous item.
nnoremap <silent> <space>k  :<C-u>CocPrev<CR>
" Resume latest coc list
nnoremap <silent> <space>p  :<C-u>CocListResume<CR>