From 1e25c99b544863d15610e9af8e623dd173397b48 Mon Sep 17 00:00:00 2001
From: Matthias Seitz <matthias.seitz@outlook.de>
Date: Mon, 12 Sep 2022 22:38:48 +0200
Subject: [PATCH] chore: expose original value on storageslot (#216)

---
 crates/revm/src/journaled_state.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/crates/revm/src/journaled_state.rs b/crates/revm/src/journaled_state.rs
index 4edcba1804..76d8203860 100644
--- a/crates/revm/src/journaled_state.rs
+++ b/crates/revm/src/journaled_state.rs
@@ -91,6 +91,16 @@ impl StorageSlot {
             present_value: original,
         }
     }
+
+    /// Returns true if the present value differs from the original value
+    pub fn is_changed(&self) -> bool {
+        self.original_value != self.present_value
+    }
+
+    pub fn original_value(&self) -> U256 {
+        self.original_value
+    }
+
     pub fn present_value(&self) -> U256 {
         self.present_value
     }