coc.vim

" https://github.com/neoclide/coc.nvim#example-vim-configuration
inoremap <silent><expr> <c-space> coc#refresh()

" gd - go to definition of word under cursor
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)

" gi - go to implementation
nmap <silent> gi <Plug>(coc-implementation)

" gr - find references
nmap <silent> gr <Plug>(coc-references)

" gh - get hint on whatever's under the cursor
nnoremap <silent> K :call <SID>show_documentation()<CR>
nnoremap <silent> gh :call <SID>show_documentation()<CR>

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


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

nnoremap <silent> <leader>co  :<C-u>CocList outline<cr>
nnoremap <silent> <leader>cs  :<C-u>CocList -I symbols<cr>

" List errors
nnoremap <silent> <leader>cl  :<C-u>CocList locationlist<cr>

" list commands available in tsserver (and others)
nnoremap <silent> <leader>cc  :<C-u>CocList commands<cr>

" restart when tsserver gets wonky
nnoremap <silent> <leader>cR  :<C-u>CocRestart<CR>

" view all errors
nnoremap <silent> <leader>cl  :<C-u>CocList locationlist<CR>

" manage extensions
nnoremap <silent> <leader>cx  :<C-u>CocList extensions<cr>

" rename the current word in the cursor
nmap <leader>cr  <Plug>(coc-rename)
nmap <leader>cf  <Plug>(coc-format-selected)
vmap <leader>cf  <Plug>(coc-format-selected)

" run code actions
vmap <leader>ca  <Plug>(coc-codeaction-selected)
nmap <leader>ca  <Plug>(coc-codeaction-selected)


" use <tab> for trigger completion and navigate to the next complete item
function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~ '\s'
endfunction

inoremap <silent><expr> <Tab>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<Tab>" :
      \ coc#refresh()

inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"