Implement serde::Serialize in enum_u8

By providing a custom Serialize implementation, we make sure that enum
variants are not mapped to their index, but to their discriminant.  This
allows us to use serde when preparing the response packet.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/util.rs b/src/util.rs
index c83d3f3..cbe7c0d 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -59,6 +59,12 @@ macro_rules! enum_u8 {
             }
         }
 
+        impl ::serde::Serialize for $name {
+            fn serialize<S: ::serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
+                serializer.serialize_u8((*self).into())
+            }
+        }
+
         impl From<$name> for u8 {
             fn from(val: $name) -> u8 {
                 val as u8