nvim: add luasnip

nvim/.config/nvim/lua/plugins/luasnip.lua

@@ -0,0 +1,48 @@
+vim.api.nvim_create_autocmd("PackChanged", {
+	group = vim.api.nvim_create_augroup("luasnip-update", { clear = true }),
+	callback = function(ev)
+		local name, kind = ev.data.spec.name, ev.data.kind
+		if name == "luasnip" and (kind == "install" or kind == "update") then
+			vim.system({ "make install_jsregexp" }, { cwd = ev.data.path }):wait()
+			print("luasnip make done.")
+		end
+	end,
+})
+
+vim.pack.add({ { src = "https://github.com/L3MON4D3/LuaSnip", version = vim.version.range("^2.0.0") } })
+local ok, ls = pcall(require, "luasnip")
+
+if ok then
+	vim.keymap.set({ "i" }, "<C-K>", function()
+		ls.expand()
+	end, { silent = true })
+	vim.keymap.set({ "i", "s" }, "<C-L>", function(fallback)
+		if ls.locally_jumpable() then
+			ls.jump(1)
+		else
+			local key = vim.api.nvim_replace_termcodes("<C-L>", true, false, true)
+			vim.api.nvim_feedkeys(key, "n", false)
+		end
+	end, { silent = true })
+	vim.keymap.set({ "i", "s" }, "<C-J>", function()
+		if ls.locally_jumpable() then
+			ls.jump(-1)
+		else
+			local key = vim.api.nvim_replace_termcodes("<C-J>", true, false, true)
+			vim.api.nvim_feedkeys(key, "n", false)
+		end
+	end, { silent = true })
+
+	vim.keymap.set({ "i", "s" }, "<C-E>", function()
+		if ls.choice_active() then
+			ls.change_choice(1)
+		else
+			local key = vim.api.nvim_replace_termcodes("<C-E>", true, false, true)
+			vim.api.nvim_feedkeys(key, "n", false)
+		end
+	end, { silent = true })
+
+	require("luasnip.loaders.from_lua").load({ paths = vim.fs.joinpath(vim.fn.stdpath("config"), "lua", "snippets") })
+else
+	print("plugin luasnip missing")
+end

nvim/.config/nvim/lua/snippets/go.lua

@@ -0,0 +1,43 @@
+return {
+	s(
+		"ife",
+		fmt(
+			[[
+			if err != nil {
+				<>
+			}
+			]],
+			{
+				i(0),
+			},
+			{ delimiters = "<>" }
+		)
+	),
+
+	s(
+		"ifse",
+		fmt(
+			[[
+			if <><>err = <>; err != nil {
+				<>
+			}
+			]],
+			{
+				i(1),
+				f(function(args)
+					local a = args[1][1]
+					if string.sub(a, -2) == ", " or a == "" then
+						return ""
+					elseif string.sub(a, -1) == "," then
+						return " "
+					else
+						return ", "
+					end
+				end, { 1 }),
+				i(2),
+				i(0),
+			},
+			{ delimiters = "<>" }
+		)
+	),
+}