support 7702 in rpc

Author: yihuang

rpc/types/utils.go

@@ -225,11 +225,56 @@ func NewRPCTransaction(
 		} else {
 			result.GasPrice = (*hexutil.Big)(tx.GasFeeCap())
 		}
+
+	case ethtypes.BlobTxType:
+		al := tx.AccessList()
+		yparity := hexutil.Uint64(v.Sign())
+		result.Accesses = &al
+		result.ChainID = (*hexutil.Big)(tx.ChainId())
+		result.YParity = &yparity
+		result.GasFeeCap = (*hexutil.Big)(tx.GasFeeCap())
+		result.GasTipCap = (*hexutil.Big)(tx.GasTipCap())
+		// if the transaction has been mined, compute the effective gas price
+		if baseFee != nil && blockHash != (common.Hash{}) {
+			result.GasPrice = (*hexutil.Big)(effectiveGasPrice(tx, baseFee))
+		} else {
+			result.GasPrice = (*hexutil.Big)(tx.GasFeeCap())
+		}
+		result.MaxFeePerBlobGas = (*hexutil.Big)(tx.BlobGasFeeCap())
+		result.BlobVersionedHashes = tx.BlobHashes()
+
+	case ethtypes.SetCodeTxType:
+		al := tx.AccessList()
+		yparity := hexutil.Uint64(v.Sign())
+		result.Accesses = &al
+		result.ChainID = (*hexutil.Big)(tx.ChainId())
+		result.YParity = &yparity
+		result.GasFeeCap = (*hexutil.Big)(tx.GasFeeCap())
+		result.GasTipCap = (*hexutil.Big)(tx.GasTipCap())
+		// if the transaction has been mined, compute the effective gas price
+		if baseFee != nil && blockHash != (common.Hash{}) {
+			result.GasPrice = (*hexutil.Big)(effectiveGasPrice(tx, baseFee))
+		} else {
+			result.GasPrice = (*hexutil.Big)(tx.GasFeeCap())
+		}
+		result.AuthorizationList = tx.SetCodeAuthorizations()
 	}
 
 	return result, nil
 }
 
+// effectiveGasPrice computes the transaction gas fee, based on the given basefee value.
+//
+//	price = min(gasTipCap + baseFee, gasFeeCap)
+func effectiveGasPrice(tx *ethtypes.Transaction, baseFee *big.Int) *big.Int {
+	fee := tx.GasTipCap()
+	fee = fee.Add(fee, baseFee)
+	if tx.GasFeeCapIntCmp(fee) < 0 {
+		return tx.GasFeeCap()
+	}
+	return fee
+}
+
 // BaseFeeFromEvents parses the feemarket basefee from cosmos events
 func BaseFeeFromEvents(events []abci.Event) *big.Int {
 	for _, event := range events {