[Codec] Use fixed-length encoding for TicketsXtEntry index

Cargo.toml

@@ -34,7 +34,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.1.35"
+version = "0.1.36"
 edition = "2021"
 license = "Apache-2.0"
 authors = ["Junha Park <0xjunha@gmail.com>"]
@@ -88,7 +88,6 @@ quote = "1.0.40"
 rand = "0.8.5"
 rayon = "1.11.0"
 reed-solomon-simd = "3.0.1"
-regex = "1.11.2"
 rcgen = { version = "0.13.2", default-features = false, features = ["ring"] }
 rocksdb = { version = "0.24.0", default-features = false, features = ["snappy"] }
 rustls = { version = "0.23.31", default-features = false, features = ["std"] }

block/src/types/extrinsics/tickets.rs

@@ -30,14 +30,38 @@ impl Display for TicketsXt {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, JamEncode, JamDecode)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct TicketsXtEntry {
     /// `e`: The ticket entry index, either 0 or 1.
     pub entry_index: u8,
     /// `p`: The ticket identifier (note: different from `Ticket` which contains hash of the proof as a ticket id)
     pub ticket_proof: BandersnatchRingVrfSig,
 }
 
+impl JamEncode for TicketsXtEntry {
+    fn size_hint(&self) -> usize {
+        self.entry_index.size_hint() + self.ticket_proof.size_hint()
+    }
+
+    fn encode_to<T: JamOutput>(&self, dest: &mut T) -> Result<(), JamCodecError> {
+        self.entry_index.encode_to_fixed(dest, 1)?;
+        self.ticket_proof.encode_to(dest)?;
+        Ok(())
+    }
+}
+
+impl JamDecode for TicketsXtEntry {
+    fn decode<I: JamInput>(input: &mut I) -> Result<Self, JamCodecError>
+    where
+        Self: Sized,
+    {
+        Ok(Self {
+            entry_index: u8::decode_fixed(input, 1)?,
+            ticket_proof: BandersnatchRingVrfSig::decode(input)?,
+        })
+    }
+}
+
 impl Display for TicketsXtEntry {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self.ticket_proof.output_hash() {