Merge pull request #1625 from TheBlueMatt/2022-07-history-tracking

[rust-lightning] / lightning / src / util / ser.rs

diff --git a/lightning/src/util/ser.rs b/lightning/src/util/ser.rs
index 852aa8f15892e5bbc3d14dd265ecf7f168044653..6ef29073837aa77d856afa37f65c737e6638abe6 100644 (file)
--- a/lightning/src/util/ser.rs
+++ b/lightning/src/util/ser.rs
@@ -523,6 +523,29 @@ impl_array!(PUBLIC_KEY_SIZE); // for PublicKey
 impl_array!(COMPACT_SIGNATURE_SIZE); // for Signature
 impl_array!(1300); // for OnionPacket.hop_data
 
+impl Writeable for [u16; 8] {
+       #[inline]
+       fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
+               for v in self.iter() {
+                       w.write_all(&v.to_be_bytes())?
+               }
+               Ok(())
+       }
+}
+
+impl Readable for [u16; 8] {
+       #[inline]
+       fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
+               let mut buf = [0u8; 16];
+               r.read_exact(&mut buf)?;
+               let mut res = [0u16; 8];
+               for (idx, v) in res.iter_mut().enumerate() {
+                       *v = (buf[idx] as u16) << 8 | (buf[idx + 1] as u16)
+               }
+               Ok(res)
+       }
+}
+
 // HashMap
 impl<K, V> Writeable for HashMap<K, V>
        where K: Writeable + Eq + Hash,