feat: Optimism Hydrated RPC Receipt Fields (#2591)

* Implement the optimism transaction receipt deposit nonce field

* Add hydrated rpc receipt flags

ethers-core/src/types/transaction/response.rs

@@ -470,6 +470,25 @@ pub struct TransactionReceipt {
     /// amount that's actually paid by users can only be determined post-execution
     #[serde(rename = "effectiveGasPrice", default, skip_serializing_if = "Option::is_none")]
     pub effective_gas_price: Option<U256>,
+    /// Deposit nonce for Optimism deposited transactions
+    #[cfg(feature = "optimism")]
+    pub deposit_nonce: Option<u64>,
+    /// L1 fee for the transaction
+    #[cfg(feature = "optimism")]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub l1_fee: Option<U256>,
+    /// L1 fee scalar for the transaction
+    #[cfg(feature = "optimism")]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub l1_fee_scalar: Option<U256>,
+    /// L1 gas price for the transaction
+    #[cfg(feature = "optimism")]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub l1_gas_price: Option<U256>,
+    /// L1 gas used for the transaction
+    #[cfg(feature = "optimism")]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub l1_gas_used: Option<U256>,
     /// Captures unknown fields such as additional fields used by L2s
     #[cfg(not(feature = "celo"))]
     #[serde(flatten)]
@@ -478,11 +497,29 @@ pub struct TransactionReceipt {
 
 impl rlp::Encodable for TransactionReceipt {
     fn rlp_append(&self, s: &mut RlpStream) {
+        #[cfg(feature = "optimism")]
+        let is_deposit = self.transaction_type == Some(U64::from(0x7E));
+        #[cfg(feature = "optimism")]
+        {
+            if is_deposit {
+                s.append(&U64::from(0x7E));
+                s.begin_list(5);
+            } else {
+                s.begin_list(4);
+            }
+        }
+        #[cfg(not(feature = "optimism"))]
         s.begin_list(4);
         rlp_opt(s, &self.status);
         s.append(&self.cumulative_gas_used);
         s.append(&self.logs_bloom);
         s.append_list(&self.logs);
+        #[cfg(feature = "optimism")]
+        if is_deposit {
+            if let Some(deposit_nonce) = self.deposit_nonce {
+                s.append(&deposit_nonce);
+            }
+        }
     }
 }
 
@@ -508,6 +545,43 @@ impl PartialOrd<Self> for TransactionReceipt {
     }
 }
 
+#[cfg(test)]
+#[cfg(feature = "optimism")]
+mod tests {
+    use super::*;
+    use rlp::Encodable;
+
+    #[test]
+    fn decode_deposit_receipt_regolith_roundtrip() {
+        let data = hex::decode("7ef9010c0182b741b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c0833d3bbf").unwrap();
+        let expected = TransactionReceipt {
+            transaction_hash: H256::zero(),
+            transaction_index: U64::zero(),
+            block_hash: None,
+            block_number: None,
+            from: Address::zero(),
+            to: None,
+            cumulative_gas_used: U256::from(46913),
+            gas_used: None,
+            contract_address: None,
+            logs: vec![],
+            status: Some(U64::from(1)),
+            root: None,
+            logs_bloom: Bloom::default(),
+            transaction_type: Some(U64::from(0x7E)),
+            effective_gas_price: None,
+            deposit_nonce: Some(4012991),
+            l1_fee: None,
+            l1_fee_scalar: None,
+            l1_gas_price: None,
+            l1_gas_used: None,
+            #[cfg(not(feature = "celo"))]
+            other: crate::types::OtherFields::default(),
+        };
+        assert_eq!(expected.rlp_bytes().to_vec(), data);
+    }
+}
+
 #[cfg(test)]
 #[cfg(not(any(feature = "celo", feature = "optimism")))]
 mod tests {