Add serialize(&self) on MsgView and MsgMut (in addition to the preexisting owned Message)

PiperOrigin-RevId: 607593581

rust/test/shared/serialization_test.rs

@@ -10,9 +10,16 @@ use unittest_proto::TestAllTypes;
 
 #[test]
 fn serialize_zero_length() {
-    let msg = TestAllTypes::new();
+    let mut msg = TestAllTypes::new();
+
     let serialized = msg.serialize();
     assert_that!(serialized.len(), eq(0));
+
+    let serialized = msg.as_view().serialize();
+    assert_that!(serialized.len(), eq(0));
+
+    let serialized = msg.as_mut().serialize();
+    assert_that!(serialized.len(), eq(0));
 }
 
 #[test]

src/google/protobuf/compiler/rust/message.cc

@@ -904,6 +904,10 @@ void GenerateRs(Context& ctx, const Descriptor& msg) {
             self.msg
           }
 
+          pub fn serialize(&self) -> $pbr$::SerializedData {
+            $Msg::serialize$
+          }
+
           $accessor_fns_for_views$
         }
 
@@ -1034,6 +1038,10 @@ void GenerateRs(Context& ctx, const Descriptor& msg) {
             self.inner
           }
 
+          pub fn serialize(&self) -> $pbr$::SerializedData {
+            $pb$::ViewProxy::as_view(self).serialize()
+          }
+
           $raw_arena_getter_for_msgmut$
 
           $accessor_fns_for_muts$
@@ -1079,7 +1087,7 @@ void GenerateRs(Context& ctx, const Descriptor& msg) {
           $raw_arena_getter_for_message$
 
           pub fn serialize(&self) -> $pbr$::SerializedData {
-            $Msg::serialize$
+            self.as_view().serialize()
           }
           pub fn deserialize(&mut self, data: &[u8]) -> Result<(), $pb$::ParseError> {
             $Msg::deserialize$