Setup completion

init.vim

@@ -9,6 +9,11 @@ Plug 'kyazdani42/nvim-tree.lua'
 Plug 'lukas-reineke/indent-blankline.nvim'
 Plug 'joshdick/onedark.vim'
 Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}
+Plug 'hrsh7th/cmp-nvim-lsp'
+Plug 'hrsh7th/cmp-buffer'
+Plug 'hrsh7th/nvim-cmp'
+Plug 'L3MON4D3/LuaSnip'
+Plug 'saadparwaiz1/cmp_luasnip'
 call plug#end()
 set termguicolors
 set mouse=a

lua/plugins.lua

@@ -6,7 +6,29 @@ require("indent_blankline").setup {
     buftype_exclude = {"terminal"}
 }
 
-require'lspconfig'.clangd.setup{}
-require'lspconfig'.denols.setup{}
+require'lspconfig'.clangd.setup{
+	capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())
+}
+require'lspconfig'.denols.setup{
+	capabilities = require('cmp_nvim_lsp').update_capabilities(vim.lsp.protocol.make_client_capabilities())
+}
 
 require('bufferline').setup()
+local cmp = require('cmp')
+
+cmp.setup({
+    snippet = {
+      expand = function(args)
+      	require('luasnip').lsp_expand(args.body)
+      end,
+    },
+    mapping = {
+      ['<C-Space>'] = cmp.mapping.complete(),
+      ['<CR>'] = cmp.mapping.confirm({ select = true }),
+    },
+    sources = {
+        {name = 'nvim_lsp'},
+    	{name = 'luasnip'},
+    	{name = 'buffer'},
+    }
+})