General completion/snips setup

configure
- nvim-cmp
- luasnips
- nvim-treesitter

after/plugin/completion.lua

@@ -0,0 +1,90 @@
+-- Configure Completion
+
+vim.opt.completeopt = {"menu","menuone","noselect"}
+vim.opt.shortmess:append "c"
+
+local ok, lspkind = pcall(require, "lspkind")
+if not ok then
+	return
+end
+
+lspkind.init()
+
+local luasnip = require("luasnip")
+local cmp = require("cmp")
+
+local has_words_before = function()
+  local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+  return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
+end
+
+cmp.setup {
+	mapping = {
+		["<Tab>"] = cmp.mapping(function(fallback)
+			if cmp.visible() then
+				cmp.select_next_item()
+			elseif luasnip.expand_or_jumpable() then
+				luasnip.expand_or_jump()
+			elseif has_words_before() then
+				cmp.complete()
+			else
+				fallback()
+			end
+		end, { "i", "s" }),
+
+		["<S-Tab>"] = cmp.mapping(function(fallback)
+			if cmp.visible() then
+				cmp.select_prev_item()
+			elseif luasnip.jumpable(-1) then
+				luasnip.jump(-1)
+			else
+				fallback()
+			end
+		end, { "i", "s" }),
+		["<C-n>"] = cmp.mapping.select_next_item { behavior = cmp.SelectBehavior.Insert },
+		["<C-p>"] = cmp.mapping.select_prev_item { behavior = cmp.SelectBehavior.Insert },
+		["<C-d>"] = cmp.mapping.scroll_docs(-4),
+		["<C-f>"] = cmp.mapping.scroll_docs(4),
+		["<CR>"] = cmp.mapping(
+		cmp.mapping.confirm {
+			behavior = cmp.ConfirmBehavior.Insert,
+			select = true,
+		})
+	},
+	sources = {
+		{name = "nvim_lua"},
+		{name = "nvim_lsp"},
+		{name = "path"},
+		{name = "luasnip"},
+		{
+			name = "buffer",
+			option = {
+				keyword_length = 5,
+			},
+		},
+	},
+	snippet = {
+		expand = function(args)
+			require("luasnip").lsp_expand(args.body)
+		end,
+	},
+	experimental = {
+		native_menu = false,
+		ghost_text = true,
+	},
+	formatting = {
+		format = lspkind.cmp_format {
+			mode = 'symbol_text',
+			menu = {
+			buffer = "[BUF]",
+			nvim_lsp = "[LSP]",
+			nvim_lua = "[API]",
+			path = "[PTH]",
+			luasnip = "[SNP]"
+			}
+		}
+	}
+}
+
+
+

after/plugin/luasnips.lua

@@ -0,0 +1,21 @@
+if not pcall(require,"luasnip") then
+	print("NO SNIPS?")
+	return
+end
+
+local ls = require "luasnip"
+-- local types = require "luasnip.util.types"
+
+
+ls.config.set_config{
+
+	-- remember the last snippet
+	history = true,
+
+	-- make dynamic snippets update with typing
+	updateevents = "TextChanged,TextChangedI",
+
+	--Autosnippets:
+	enable_autosnippets = true,
+}
+require("luasnip/loaders/from_vscode").load()

after/plugin/treesitter.lua

@@ -0,0 +1,30 @@
+if not pcall(require, "nvim-treesitter") then
+  return
+end
+
+require'nvim-treesitter.configs'.setup {
+  -- A list of parser names, or "all"
+  ensure_installed = { "c", "lua", "rust", "c_sharp", "markdown", "latex" },
+
+  -- Install parsers synchronously (only applied to `ensure_installed`)
+  sync_install = false,
+
+  highlight = {
+    -- `false` will disable the whole extension
+    enable = true,
+
+	-- Setting this to true will run `:h syntax` and tree-sitter at the same
+	-- time. Set this to `true` if you depend on 'syntax' being enabled (like
+	-- for indentation). Using this option may slow down your editor, and you
+	-- may see some duplicate highlights. Instead of true it can also be a list
+	-- of languages
+    additional_vim_regex_highlighting = false,
+  },
+
+  rainbow = {
+	  enable = true,
+	  extended_mode = true,
+	  max_file_lines = nil,
+  }
+}
+