feat: support transient storage (EIP-1153)

Cargo.toml

@@ -52,7 +52,7 @@ derive_more = "0.99"
 environmental = { version = "1.1.4", default-features = false }
 ethereum = { version = "0.15.0", default-features = false }
 ethereum-types = { version = "0.14.1", default-features = false }
-evm = { git = "https://github.com/moonbeam-foundation/evm", branch = "moonbeam-polkadot-v1.7.2", default-features = false }
+evm = { git = "https://github.com/moonbeam-foundation/evm", branch = "v0.4.1-eip1153", default-features = false }
 futures = "0.3.30"
 hash-db = { version = "0.16.0", default-features = false }
 hex = { version = "0.4.3", default-features = false, features = ["alloc"] }

frame/evm/src/runner/stack.rs

@@ -725,6 +725,7 @@ pub struct SubstrateStackState<'vicinity, 'config, T> {
 	vicinity: &'vicinity Vicinity,
 	substate: SubstrateStackSubstate<'config>,
 	original_storage: BTreeMap<(H160, H256), H256>,
+	transient_storage: BTreeMap<(H160, H256), H256>,
 	recorded: Recorded,
 	weight_info: Option<WeightInfo>,
 	storage_meter: Option<StorageMeter>,
@@ -750,6 +751,7 @@ impl<'vicinity, 'config, T: Config> SubstrateStackState<'vicinity, 'config, T> {
 			},
 			_marker: PhantomData,
 			original_storage: BTreeMap::new(),
+			transient_storage: BTreeMap::new(),
 			recorded: Default::default(),
 			weight_info,
 			storage_meter,
@@ -844,6 +846,13 @@ where
 		<AccountStorages<T>>::get(address, index)
 	}
 
+	fn transient_storage(&self, address: H160, index: H256) -> H256 {
+		self.transient_storage
+			.get(&(address, index))
+			.copied()
+			.unwrap_or_default()
+	}
+
 	fn original_storage(&self, address: H160, index: H256) -> Option<H256> {
 		Some(
 			self.original_storage
@@ -930,6 +939,10 @@ where
 		}
 	}
 
+	fn set_transient_storage(&mut self, address: H160, key: H256, value: H256) {
+		self.transient_storage.insert((address, key), value);
+	}
+
 	fn reset_storage(&mut self, address: H160) {
 		#[allow(deprecated)]
 		let _ = <AccountStorages<T>>::remove_prefix(address, None);