From 64b210b53c3bfecea2f3c88d460cd3c1afc93e62 Mon Sep 17 00:00:00 2001
From: Henry de Valence <hdevalence@hdevalence.ca>
Date: Wed, 25 Sep 2019 14:05:30 -0700
Subject: [PATCH] Add a read_32_bytes helper method.

These are starting to stack up but I think until generic arrays arrive
the cure is worse than the disease :S
---
 zebra-chain/src/serialization.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/zebra-chain/src/serialization.rs b/zebra-chain/src/serialization.rs
index 9232d60d..971b7d1d 100644
--- a/zebra-chain/src/serialization.rs
+++ b/zebra-chain/src/serialization.rs
@@ -236,6 +236,14 @@ pub trait ReadZcashExt: io::Read {
         self.read_exact(&mut bytes)?;
         Ok(bytes)
     }
+
+    /// Convenience method to read a `[u8; 32]`.
+    #[inline]
+    fn read_32_bytes(&mut self) -> io::Result<[u8; 32]> {
+        let mut bytes = [0; 32];
+        self.read_exact(&mut bytes)?;
+        Ok(bytes)
+    }
 }
 
 /// Mark all types implementing `Read` as implementing the extension.