nvim: add CoC setup

1 files changed, 80 insertions, 0 deletions

diff --git a/neovim/.config/nvim/init.vim b/neovim/.config/nvim/init.vim
index d58bba4..9146646 100644
--- a/neovim/.config/nvim/init.vim
+++ b/neovim/.config/nvim/init.vim
@@ -82,6 +82,84 @@ Plug 'fisadev/FixedTaskList.vim'
 " from this plugin is disabled
 "Plug 'davidhalter/jedi-vim'
 
+Plug 'neoclide/coc.nvim', {'branch': 'release'}
+" Use tab for trigger completion with characters ahead and navigate.
+" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
+" other plugin before putting this into your config.
+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.
+if has('patch8.1.1068')
+  " Use `complete_info` if your (Neo)Vim version supports it.
+  inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
+else
+  imap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
+endif
+
+" Use `[g` and `]g` to navigate diagnostics
+nmap <silent> [g <Plug>(coc-diagnostic-prev)
+nmap <silent> ]g <Plug>(coc-diagnostic-next)
+
+" GoTo code navigation.
+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 the symbol and its references when holding the cursor.
+autocmd CursorHold * silent call CocActionAsync('highlight')
+
+" Symbol renaming.
+nmap <leader>rn <Plug>(coc-rename)
+
+" Formatting selected code.
+xmap <leader>f  <Plug>(coc-format-selected)
+nmap <leader>f  <Plug>(coc-format-selected)
+" Add `:Format` command to format current buffer.
+command! -nargs=0 Format :call CocAction('format')
+" Mappings 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>
+" -- END COC SETUP --
+
 " Automatically close parenthesis, etc
 "Plug 'Townk/vim-autoclose'
 
@@ -239,7 +317,9 @@ map <F2> :TaskList<CR>
 
 " file finder mapping
 nmap ,e :Files<CR>
+" buffer search
 nmap ,b :Buffers<CR>
+" Ag search
 nmap ,a :Ag<CR>
 " tags (symbols) in current file finder mapping
 nmap ,g :BTag<CR>