feat: using COC as LSP + linter + autocompletion

3 files changed, 82 insertions, 56 deletions

diff --git a/conf/keymaps.vim b/conf/keymaps.vim
index 351520d..cf04181 100644
--- a/conf/keymaps.vim
+++ b/conf/keymaps.vim
@@ -145,3 +145,56 @@ noremap <leader>sa zg
 
 " show the list of alternatives for the word
 noremap <leader>s? z=
+
+""""""""""""""""""""
+" LSP
+""""""""""""""""""""
+
+nmap <silent><nowait> [g <Plug>(coc-diagnostic-prev)
+nmap <silent><nowait> ]g <Plug>(coc-diagnostic-next)
+
+" GoTo code navigation
+nmap <silent><nowait> gd <Plug>(coc-definition)
+nmap <silent><nowait> gy <Plug>(coc-type-definition)
+nmap <silent><nowait> gi <Plug>(coc-implementation)
+nmap <silent><nowait> gr <Plug>(coc-references)
+
+" Use K to show documentation in preview window
+nnoremap <silent> K :call ShowDocumentation()<CR>
+
+function! ShowDocumentation()
+  if CocAction('hasProvider', 'hover')
+    call CocActionAsync('doHover')
+  else
+    call feedkeys('K', 'in')
+  endif
+endfunction
+
+" Highlight the symbol and its references when holding the cursor
+autocmd CursorHold * silent call CocActionAsync('highlight')
+
+" Symbol renaming
+nmap <leader>gR <Plug>(coc-rename)
+
+" Formatting selected code
+xmap <leader>gf  <Plug>(coc-format-selected)
+nmap <leader>gf  <Plug>(coc-format-selected)
+
+" Applying code actions to the selected code block
+xmap <leader>ga  <Plug>(coc-codeaction-selected)
+nmap <leader>ga  <Plug>(coc-codeaction-selected)
+
+" Remap keys for applying code actions at the cursor position
+nmap <leader>gc  <Plug>(coc-codeaction-cursor)
+" Remap keys for apply code actions affect whole buffer
+nmap <leader>gs  <Plug>(coc-codeaction-source)
+" Apply the most preferred quickfix action to fix diagnostic on the current line
+nmap <leader>gqf  <Plug>(coc-fix-current)
+
+" Remap keys for applying refactor code actions
+nmap <silent> <leader>gr <Plug>(coc-codeaction-refactor)
+xmap <silent> <leader>r  <Plug>(coc-codeaction-refactor-selected)
+nmap <silent> <leader>r  <Plug>(coc-codeaction-refactor-selected)
+
+" Run the Code Lens action on the current line
+nmap <leader>gcl  <Plug>(coc-codelens-action)
diff --git a/conf/options.vim b/conf/options.vim
index 395ee52..f36ac55 100644
--- a/conf/options.vim
+++ b/conf/options.vim
@@ -78,6 +78,7 @@ set ffs=unix,dos,mac
 
 " Turn backup off, since most stuff is in SVN, git etc. anyway...
 set nobackup
+set nowritebackup
 set noswapfile
 
 " Timeout 
diff --git a/conf/plugins.vim b/conf/plugins.vim
index e2349f3..e56d72d 100644
--- a/conf/plugins.vim
+++ b/conf/plugins.vim
@@ -22,7 +22,7 @@ Plug 'liuchengxu/vim-which-key' " Show leader mapping cheatsheet
 Plug 'airblade/vim-gitgutter' " Git diff
 
 " Autocompletion, linter, syntax
-Plug 'dense-analysis/ale'
+Plug 'neoclide/coc.nvim', {'branch': 'release'}
 
 " Tools
 Plug 'ap/vim-css-color' " rgb, hex color preview
@@ -35,37 +35,24 @@ filetype plugin indent on " Allow filetype detection, plugins, indentation
 "	Configuration
 """""""""""""""""""""""""
 " LSP
-let g:ale_python_auto_virtualenv = 1
-let g:ale_completion_enabled = 1
-let g:ale_floating_preview = 1 " Show hover doc & detail in a popup
-let g:ale_fix_on_save = 1
-
-" Stop linting when writing
-let g:ale_lint_on_text_changed = 'never'
-let g:ale_lint_on_insert_leave = 0
-let g:ale_hover_cursor = 1
-let g:ale_set_balloons = 1 " Show error when mouse over it
-
-" Linters and fixers (don't forget to setup LSP as linters)
-let g:ale_linters = {
-\   'python': ['pylsp', 'flake8', 'pylint', 'mypy'],
-\   'php': ['intelephense', 'phpcs', 'phpmd'],
-\	'rust': ['analyzer'],
-\	'html': ['vscodehtml', 'htmlhint', 'stylelint', 'eslint'],
-\	'css': ['vscodecss', 'stylelint'],
-\	'javascript': ['eslint'],
-\}
-
-let g:ale_fixers = {
-\   'python': ['black', 'isort', 'autopep8'],
-\   'php': ['php_cs_fixer'],
-\	'rust': ['rustfmt'],
-\	'html': ['html-beautify'],
-\	'css': ['css-beautify'],
-\	'javascript': ['js-beautify'],
-\}
-let g:ale_html_htmlhint_use_global = 1
-let g:ale_html_stylehint_use_global = 1
+" Navigate with tab and shift tab in the list, and enter to confirm selection
+inoremap <expr> <Tab> coc#pum#visible() ? coc#pum#next(1) : "\<Tab>"
+inoremap <expr> <S-Tab> coc#pum#visible() ? coc#pum#prev(1) : "\<S-Tab>"
+inoremap <expr> <cr> coc#pum#visible() ? coc#pum#confirm() : "\<CR>"
+
+" Use K to show documentation in preview window
+nnoremap <silent> K :call ShowDocumentation()<CR>
+
+function! ShowDocumentation()
+  if CocAction('hasProvider', 'hover')
+    call CocActionAsync('doHover')
+  else
+    call feedkeys('K', 'in')
+  endif
+endfunction
+
+" Highlight the symbol and its references when holding the cursor
+autocmd CursorHold * silent call CocActionAsync('highlight')
 
 " Netrw (filetree built-in vim)
 let g:netrw_keepdir = 0 " Reload buffer usefull when moving or removing file
@@ -85,20 +72,6 @@ let g:currentmode={
 	\ 'c'  : 'Command ',
 	\}
 
-" Getting numbers of errors in ALE
-function! LinterStatus() abort
-    let l:counts = ale#statusline#Count(bufnr(''))
-
-    let l:all_errors = l:counts.error + l:counts.style_error
-    let l:all_non_errors = l:counts.total - l:all_errors
-
-    return l:counts.total == 0 ? 'OK' : printf(
-    \   '%dW %dE',
-    \   all_non_errors,
-    \   all_errors
-    \)
-
-endfunction
 set laststatus=2
 set statusline=
 " VIM Mode
@@ -111,7 +84,7 @@ set statusline+=%{&readonly?'\ ':''}
 set statusline+=%=%y
 set statusline+=\ \|\ %{&fileencoding?&fileencoding:&encoding}
 set statusline+=\ \|\ [%{&fileformat}\]
-set statusline+=\ \|\ %{LinterStatus()}
+set statusline+=\ \|\ %{coc#status()}%{get(b:,'coc_current_function','')}
 " Line count and percentage
 set statusline+=\ \|\ %l:%c
 set statusline+=\ [%p%%]\ 
@@ -168,13 +141,12 @@ let g:which_key_map.h = {
 " Activer WhichKey pour ALE
 let g:which_key_map.g = { 
     \ 'name' : '+LSP',
-    \ 'd' : [':ALEGoToDefinition', 'go to definition'],
-    \ 'n' : [':ALENext', 'next diagnostic'],
-    \ 'p' : [':ALEPrevious', 'previous diagnostic'],
-    \ 'r' : [':ALEFindReferences', 'go to reference'],
-    \ 'R' : [':ALERename', 'rename object'],
-    \ 'y' : [':ALEType', 'type definition'],
-    \ 'i' : [':ALEGoToImplementation', 'go to implementation'],
-    \ 'h' : [':ALEHover', 'documentation'],
-    \ 'f' : [':ALEFix', 'format document'],
+    \ 'R' : 'rename object',
+	\ 'f' : 'format selected code',
+	\ 'a' : 'code action selected',
+	\ 'c' : 'code action curseur',
+	\ 's' : 'code action buffer',
+	\ 'qf' : 'quickfix current line',
+	\ 'r' : 'refactor all',
+	\ 'cl' : 'codelens action',
     \ }