Extend the `Expression` trait to allow for "deserialization"

1 files changed, 5 insertions, 3 deletions

diff --git a/rustables/src/expr/payload.rs b/rustables/src/expr/payload.rs
index 2da4e1f..de77e0c 100644
--- a/rustables/src/expr/payload.rs
+++ b/rustables/src/expr/payload.rs
@@ -46,11 +46,13 @@ impl HeaderField for Payload {
 }
 
 impl Expression for Payload {
+    fn get_raw_name() -> *const libc::c_char {
+        b"payload\0" as *const _ as *const c_char
+    }
+
     fn to_expr(&self, _rule: &Rule) -> *mut sys::nftnl_expr {
         unsafe {
-            let expr = try_alloc!(sys::nftnl_expr_alloc(
-                b"payload\0" as *const _ as *const c_char
-            ));
+            let expr = try_alloc!(sys::nftnl_expr_alloc(Self::get_raw_name()));
 
             sys::nftnl_expr_set_u32(expr, sys::NFTNL_EXPR_PAYLOAD_BASE as u16, self.base());
             sys::nftnl_expr_set_u32(expr, sys::NFTNL_EXPR_PAYLOAD_OFFSET as u16, self.offset());