declared interfaces and more wrappers

src/lib.rs

@@ -1,11 +1,21 @@
 // SPDX: GPL-2.0-only
 
-#![feature(c_variadic)]
-
 pub(crate) mod ffi;
 
 // public api
 pub mod array;
 pub mod client;
 pub mod display;
-pub mod global;
+pub mod global;
+pub mod interface;
+pub mod list;
+pub mod resource;
+
+pub(crate) trait Wrapper {
+    type T;
+
+    fn get_raw(&self) -> std::ptr::NonNull<Self::T>;
+    fn as_raw_ptr(&self) -> *mut Self::T {
+        self.get_raw().as_ptr()
+    }
+}