config: nvim: add basic language server protocol support

config/nvim/init.vim

@@ -1,3 +1,4 @@
 source $HOME/.config/nvim/plugins.vim
 source $HOME/.config/nvim/general.vim
 source $HOME/.config/nvim/keybindings.vim
+source $HOME/.config/nvim/lsp.vim

config/nvim/lsp.vim

@@ -0,0 +1,25 @@
+" lsp-config
+if has('nvim')
+	nnoremap <silent> gd <cmd>lua vim.lsp.buf.definition()<CR>
+	nnoremap <silent> gD <cmd>lua vim.lsp.buf.declaration()<CR>
+	nnoremap <silent> gr <cmd>lua vim.lsp.buf.references()<CR>
+	nnoremap <silent> gi <cmd>lua vim.lsp.buf.implementation()<CR>
+	nnoremap <silent> K <cmd>lua vim.lsp.buf.hover()<CR>
+	nnoremap <silent> <C-k> <cmd>lua vim.lsp.buf.signature_help()<CR>
+	nnoremap <silent> <C-r> <cmd>lua vim.lsp.buf.rename()<CR>
+	nnoremap <silent> <C-n> <cmd>lua vim.lsp.diagnostic.goto_prev()<CR>
+	nnoremap <silent> <C-p> <cmd>lua vim.lsp.diagnostic.goto_next()<CR>
+
+	" auto-format
+	autocmd BufWritePre *.js lua vim.lsp.buf.formatting_sync(nil, 100)
+	autocmd BufWritePre *.jsx lua vim.lsp.buf.formatting_sync(nil, 100)
+	autocmd BufWritePre *.py lua vim.lsp.buf.formatting_sync(nil, 100)
+
+	" setup lsp-providers
+	" (-> need to be installed manually first and then added here)
+	lua require'lspconfig'.ccls.setup{}
+	lua require'lspconfig'.clangd.setup{}
+	lua require'lspconfig'.pyright.setup{}
+	lua require'lspconfig'.bashls.setup{}
+	lua require'lspconfig'.gopls.setup{}
+endif

config/nvim/plugins.vim

@@ -11,6 +11,8 @@ Plug 'romainl/vim-dichromatic'
 
 " only for nvim!
 if has('nvim')
+	" language server protocol support
+	Plug 'neovim/nvim-lspconfig'
 	" colorizes colorcodes
 	Plug 'norcalli/nvim-colorizer.lua'
 endif