add [En|De]codable trait for sha256::Hash

src/consensus/encode.rs

@@ -34,7 +34,7 @@ use prelude::*;
 use core::{fmt, mem, u32, convert::From};
 #[cfg(feature = "std")] use std::error;
 
-use hashes::{sha256d, Hash};
+use hashes::{sha256d, Hash, sha256};
 use hash_types::{BlockHash, FilterHash, TxMerkleNode, FilterHeader};
 
 use io::{self, Cursor, Read};
@@ -756,6 +756,18 @@ impl Decodable for sha256d::Hash {
     }
 }
 
+impl Encodable for sha256::Hash {
+    fn consensus_encode<S: io::Write>(&self, s: S) -> Result<usize, io::Error> {
+        self.into_inner().consensus_encode(s)
+    }
+}
+
+impl Decodable for sha256::Hash {
+    fn consensus_decode<D: io::Read>(d: D) -> Result<Self, Error> {
+        Ok(Self::from_inner(<<Self as Hash>::Inner>::consensus_decode(d)?))
+    }
+}
+
 // Tests
 #[cfg(test)]
 mod tests {