Add ada mode

lua/ada_mode.lua

@@ -7,7 +7,7 @@ end
 -- @param
 -- @short Verify installation of ada tools or install them.
 local function setup_ada()
-	vim.keymap.set("n", "<leader>cb", ":!gnatpp %<cr>")
+	vim.keymap.set("n", "<leader>kk", ":!gnatpp %<cr>")
 	vim.opt.tabstop = 3
 	vim.opt.shiftwidth = 3
 end
@@ -30,3 +30,19 @@ vim.api.nvim_create_autocmd({ "BufLeave" }, {
 	pattern = { "*.adb", "*.ads" },
 	callback = leave_ada,
 })
+
+-- @name format_file
+-- @param
+-- @short Run gnatpp as formatter on the current file.
+local function format_file()
+	vim.cmd("checktime %")
+	local write_cmd = "gnatpp " .. vim.api.nvim_buf_get_name(0)
+	os.execute(write_cmd)
+	vim.cmd("checktime %")
+end
+
+-- Add formatter command
+vim.api.nvim_create_autocmd({ "BufWritePost" }, {
+	pattern = { "*.adb", "*.ads" },
+	callback = format_file,
+})