feat: A variety of utilities in preparation for implementing the API

util/src/zerocopy/zerocopy_ref_ext.rs

@@ -0,0 +1,27 @@
+use zerocopy::{ByteSlice, ByteSliceMut, Ref};
+
+pub trait ZerocopyEmancipateExt<B, T> {
+    fn emancipate(&self) -> Ref<&[u8], T>;
+}
+
+pub trait ZerocopyEmancipateMutExt<B, T> {
+    fn emancipate_mut(&mut self) -> Ref<&mut [u8], T>;
+}
+
+impl<B, T> ZerocopyEmancipateExt<B, T> for Ref<B, T>
+where
+    B: ByteSlice,
+{
+    fn emancipate(&self) -> Ref<&[u8], T> {
+        Ref::new(self.bytes()).unwrap()
+    }
+}
+
+impl<B, T> ZerocopyEmancipateMutExt<B, T> for Ref<B, T>
+where
+    B: ByteSliceMut,
+{
+    fn emancipate_mut(&mut self) -> Ref<&mut [u8], T> {
+        Ref::new(self.bytes_mut()).unwrap()
+    }
+}