Adding nvim completion

nvim/nvim/config/new/lua/lsp/cmp.lua

@@ -0,0 +1,44 @@
+local cmp_status_ok, cmp = pcall(require, "cmp")
+if not cmp_status_ok then
+	return
+end
+
+cmp.setup({
+	snippet = {
+		expand = function(args)
+			require('luasnip').lsp_expand(args.body)
+		end,
+	},
+	mapping = {
+		["<C-k>"] = cmp.mapping.select_prev_item(),
+		["<C-j>"] = cmp.mapping.select_next_item(),
+		['<C-b>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
+		['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
+		['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
+		['<C-y>'] = cmp.config.disable, -- Specify `cmp.config.disable` if you want to remove the default `<C-y>` mapping.
+		['<C-e>'] = cmp.mapping({
+			i = cmp.mapping.abort(),
+			c = cmp.mapping.close(),
+		}),
+		['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
+	},
+	sources = cmp.config.sources({
+		{ name = "nvim_lsp" },
+		{ name = "buffer" },
+		{ name = "path" },
+	})
+})
+
+cmp.setup.cmdline('/', {
+	sources = {
+		{ name = 'buffer' }
+	}
+})
+
+cmp.setup.cmdline(':', {
+	sources = cmp.config.sources({
+		{ name = 'path' }
+	}, {
+		{ name = 'cmdline' }
+	})
+})

nvim/nvim/config/new/lua/lsp/handlers.lua

@@ -1,7 +1,76 @@
 local M = {}
 
-local on_attach = function(client, bufnr)
-	local wk = require("which-key")
+M.icons = {
+	Class = " ",
+	Color = " ",
+	Constant = " ",
+	Constructor = " ",
+	Enum = "了 ",
+	EnumMember = " ",
+	Field = " ",
+	File = " ",
+	Folder = " ",
+	Function = " ",
+	Interface = "ﰮ ",
+	Keyword = " ",
+	Method = "ƒ ",
+	Module = " ",
+	Property = " ",
+	Snippet = "﬌ ",
+	Struct = " ",
+	Text = " ",
+	Unit = " ",
+	Value = " ",
+	Variable = " ",
+}
+
+M.setup = function()
+	local signs = {
+		{ name = "DiagnosticSignError", text = "" },
+		{ name = "DiagnosticSignWarn", text = "" },
+		{ name = "DiagnosticSignInfo", text = "" },
+		{ name = "DiagnosticSignHint", text = "" },
+	}
+	for _, sign in ipairs(signs) do
+		vim.fn.sign_define(sign.name, { texthl = sign.name, text = sign.text, numhl = "" })
+	end
+
+	vim.diagnostic.config({
+		virtual_text = false,
+		update_in_insert = true,
+	})
+
+	local kinds = vim.lsp.protocol.CompletionItemKind
+	for i, kind in ipairs(kinds) do
+		kinds[i] = M.icons[kind] or kind
+	end
+end
+
+local function lsp_highlight_document(client)
+	if client.resolved_capabilities.document_highlight then
+		vim.cmd [[
+		augroup lsp_document_highlight
+		autocmd! * <buffer>
+		autocmd! CursorHold <buffer> lua vim.lsp.buf.document_highlight()
+		autocmd! CursorMoved <buffer> lua vim.lsp.buf.clear_references()
+		augroup END
+		]]
+	end
+end
+
+local wk = require("which-key")
+wk.register({
+	["[d"] = { '<cmd>lua vim.diagnostic.goto_prev()<CR>', "Prev diagnostic" },
+	["]d"] = { '<cmd>lua vim.diagnostic.goto_next()<CR>', "Next diagnostic" },
+	gl = { "<cmd>lua vim.diagnostic.open_float()<CR>", "See diagnostics" },
+	["<leader>l"] = {
+		name = "LSP",
+		i = { "<cmd>LspInfo<cr>", "Info" },
+		I = { "<cmd>LspInstallInfo<cr>", "Installer Info" },
+	},
+})
+
+local lsp_keymaps = function(bufnr)
 	wk.register({
 		g = {
 			D = { '<cmd>lua vim.lsp.buf.declaration()<CR>', "Go to declaration" },
@@ -12,7 +81,6 @@ local on_attach = function(client, bufnr)
 		K = { '<cmd>lua vim.lsp.buf.hover()<CR>', "See LSP tooltip" },
 		["<C-k>"] = { '<cmd>lua vim.lsp.buf.signature_help()<CR>', "See signature help" },
 		["<leader>l"] = {
-			name = "LSP",
 			r = { '<cmd>lua vim.lsp.buf.rename()<CR>', "Rename" },
 			a = { '<cmd>lua vim.lsp.buf.code_action()<CR>', "Code action" },
 			f = { '<cmd>lua vim.lsp.buf.formatting()<CR>', "Format" },
@@ -24,6 +92,17 @@ end
 
 M.on_attach = function(client, bufnr)
 	lsp_keymaps(bufnr)
+	lsp_highlight_document(client)
 end
 
+local capabilities = vim.lsp.protocol.make_client_capabilities()
+
+local status_ok, cmp_nvim_lsp = pcall(require, "cmp_nvim_lsp")
+if not status_ok then
+	return M
+end
+
+M.capabilities = cmp_nvim_lsp.update_capabilities(capabilities)
+
+
 return M

nvim/nvim/config/new/lua/lsp/init.lua

@@ -1,2 +1,4 @@
 require "lsp.lsp-install"
+require("lsp.handlers").setup()
+require "lsp.cmp"
 

nvim/nvim/config/new/lua/plugins.lua

@@ -56,6 +56,14 @@ return packer.startup(function(use)
 		'neovim/nvim-lspconfig',
 		'williamboman/nvim-lsp-installer',
 	}
+	use {
+		"hrsh7th/cmp-nvim-lsp",
+		"hrsh7th/cmp-buffer",
+		"hrsh7th/cmp-path",
+		"hrsh7th/cmp-cmdline",
+		"hrsh7th/nvim-cmp",
+		"L3MON4D3/LuaSnip",
+	}
 
 	if PACKER_BOOTSTRAP then
 		require("packer").sync()