From e60c2f66a3e04e4437cfdd38ef56848abf2938b3 Mon Sep 17 00:00:00 2001
From: Thomas Coratger <thomas.coratger@gmail.com>
Date: Wed, 4 Sep 2024 16:36:50 +0200
Subject: [PATCH] consensus: impl parent_num_hash for Header

---
 crates/consensus/src/header.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/crates/consensus/src/header.rs b/crates/consensus/src/header.rs
index f593b873929..f493263b0ce 100644
--- a/crates/consensus/src/header.rs
+++ b/crates/consensus/src/header.rs
@@ -1,6 +1,7 @@
 use alloy_eips::{
     eip1559::{calc_next_block_base_fee, BaseFeeParams},
     eip4844::{calc_blob_gasprice, calc_excess_blob_gas},
+    BlockNumHash,
 };
 use alloy_primitives::{
     b256, keccak256, Address, BlockNumber, Bloom, Bytes, Sealable, B256, B64, U256,
@@ -344,6 +345,11 @@ impl Header {
 
         length
     }
+
+    /// Returns the parent block's number and hash
+    pub const fn parent_num_hash(&self) -> BlockNumHash {
+        BlockNumHash { number: self.number.saturating_sub(1), hash: self.parent_hash }
+    }
 }
 
 impl Encodable for Header {