core, core/types: plain Message struct (#25977)

Here, the core.Message interface turns into a plain struct and
types.Message gets removed.

This is a breaking change to packages core and core/types. While we do
not promise API stability for package core, we do for core/types. An
exception can be made for types.Message, since it doesn't have any
purpose apart from invoking the state transition in package core.
types.Message was also marked deprecated by the same commit it
got added in, 4dca5d4db7 (November 2016).

The core.Message interface was added in December 2014, in commit
db494170dc, for the purpose of 'testing' state transitions. It's the
same change that made transaction struct fields private. Before that,
the state transition used *types.Transaction directly.

Over time, multiple implementations of the interface accrued across
different packages, since constructing a Message is required whenever
one wants to invoke the state transition. These implementations all
looked very similar, a struct with private fields exposing the fields
as accessor methods.

By changing Message into a struct with public fields we can remove all
these useless interface implementations. It will also hopefully
simplify future changes to the type with less updates to apply across
all of go-ethereum when a field is added to Message.

---------

Co-authored-by: Felix Lange <fjl@twurst.com>

core/evm.go

@@ -70,10 +70,10 @@ func NewEVMBlockContext(header *types.Header, chain ChainContext, author *common
 }
 
 // NewEVMTxContext creates a new transaction context for a single transaction.
-func NewEVMTxContext(msg Message) vm.TxContext {
+func NewEVMTxContext(msg *Message) vm.TxContext {
 	return vm.TxContext{
-		Origin:   msg.From(),
-		GasPrice: new(big.Int).Set(msg.GasPrice()),
+		Origin:   msg.From,
+		GasPrice: new(big.Int).Set(msg.GasPrice),
 	}
 }
 

core/state_prefetcher.go

@@ -63,7 +63,7 @@ func (p *statePrefetcher) Prefetch(block *types.Block, statedb *state.StateDB, c
 			return
 		}
 		// Convert the transaction into an executable message and pre-cache its sender
-		msg, err := tx.AsMessage(signer, header.BaseFee)
+		msg, err := TransactionToMessage(tx, signer, header.BaseFee)
 		if err != nil {
 			return // Also invalid block, bail out
 		}
@@ -85,7 +85,7 @@ func (p *statePrefetcher) Prefetch(block *types.Block, statedb *state.StateDB, c
 // precacheTransaction attempts to apply a transaction to the given state database
 // and uses the input parameters for its environment. The goal is not to execute
 // the transaction successfully, rather to warm up touched data slots.
-func precacheTransaction(msg types.Message, config *params.ChainConfig, gaspool *GasPool, statedb *state.StateDB, header *types.Header, evm *vm.EVM) error {
+func precacheTransaction(msg *Message, config *params.ChainConfig, gaspool *GasPool, statedb *state.StateDB, header *types.Header, evm *vm.EVM) error {
 	// Update the evm with the new transaction context.
 	evm.Reset(NewEVMTxContext(msg), statedb)
 	// Add addresses to access list if applicable

core/state_processor.go

@@ -74,7 +74,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
 	vmenv := vm.NewEVM(blockContext, vm.TxContext{}, statedb, p.config, cfg)
 	// Iterate over and process the individual transactions
 	for i, tx := range block.Transactions() {
-		msg, err := tx.AsMessage(types.MakeSigner(p.config, header.Number), header.BaseFee)
+		msg, err := TransactionToMessage(tx, types.MakeSigner(p.config, header.Number), header.BaseFee)
 		if err != nil {
 			return nil, nil, 0, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err)
 		}
@@ -97,7 +97,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
 	return receipts, allLogs, *usedGas, nil
 }
 
-func applyTransaction(msg types.Message, config *params.ChainConfig, gp *GasPool, statedb *state.StateDB, blockNumber *big.Int, blockHash common.Hash, tx *types.Transaction, usedGas *uint64, evm *vm.EVM) (*types.Receipt, error) {
+func applyTransaction(msg *Message, config *params.ChainConfig, gp *GasPool, statedb *state.StateDB, blockNumber *big.Int, blockHash common.Hash, tx *types.Transaction, usedGas *uint64, evm *vm.EVM) (*types.Receipt, error) {
 	// Create a new context to be used in the EVM environment.
 	txContext := NewEVMTxContext(msg)
 	evm.Reset(txContext, statedb)
@@ -129,7 +129,7 @@ func applyTransaction(msg types.Message, config *params.ChainConfig, gp *GasPool
 	receipt.GasUsed = result.UsedGas
 
 	// If the transaction created a contract, store the creation address in the receipt.
-	if msg.To() == nil {
+	if msg.To == nil {
 		receipt.ContractAddress = crypto.CreateAddress(evm.TxContext.Origin, tx.Nonce())
 	}
 
@@ -147,7 +147,7 @@ func applyTransaction(msg types.Message, config *params.ChainConfig, gp *GasPool
 // for the transaction, gas used and an error if the transaction failed,
 // indicating the block was invalid.
 func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *uint64, cfg vm.Config) (*types.Receipt, error) {
-	msg, err := tx.AsMessage(types.MakeSigner(config, header.Number), header.BaseFee)
+	msg, err := TransactionToMessage(tx, types.MakeSigner(config, header.Number), header.BaseFee)
 	if err != nil {
 		return nil, err
 	}

core/state_transition.go

@@ -25,65 +25,9 @@ import (
 	cmath "github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
-	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/params"
 )
 
-var emptyCodeHash = crypto.Keccak256Hash(nil)
-
-// StateTransition represents a state transition.
-//
-// == The State Transitioning Model
-//
-// A state transition is a change made when a transaction is applied to the current world
-// state. The state transitioning model does all the necessary work to work out a valid new
-// state root.
-//
-//  1. Nonce handling
-//  2. Pre pay gas
-//  3. Create a new state object if the recipient is nil
-//  4. Value transfer
-//
-// == If contract creation ==
-//
-//	4a. Attempt to run transaction data
-//	4b. If valid, use result as code for the new state object
-//
-// == end ==
-//
-//  5. Run Script section
-//  6. Derive new state root
-type StateTransition struct {
-	gp         *GasPool
-	msg        Message
-	gas        uint64
-	gasPrice   *big.Int
-	gasFeeCap  *big.Int
-	gasTipCap  *big.Int
-	initialGas uint64
-	value      *big.Int
-	data       []byte
-	state      vm.StateDB
-	evm        *vm.EVM
-}
-
-// Message represents a message sent to a contract.
-type Message interface {
-	From() common.Address
-	To() *common.Address
-
-	GasPrice() *big.Int
-	GasFeeCap() *big.Int
-	GasTipCap() *big.Int
-	Gas() uint64
-	Value() *big.Int
-
-	Nonce() uint64
-	IsFake() bool
-	Data() []byte
-	AccessList() types.AccessList
-}
-
 // ExecutionResult includes all output after executing given evm
 // message no matter the execution itself is successful or not.
 type ExecutionResult struct {
@@ -178,19 +122,47 @@ func toWordSize(size uint64) uint64 {
 	return (size + 31) / 32
 }
 
-// NewStateTransition initialises and returns a new state transition object.
-func NewStateTransition(evm *vm.EVM, msg Message, gp *GasPool) *StateTransition {
-	return &StateTransition{
-		gp:        gp,
-		evm:       evm,
-		msg:       msg,
-		gasPrice:  msg.GasPrice(),
-		gasFeeCap: msg.GasFeeCap(),
-		gasTipCap: msg.GasTipCap(),
-		value:     msg.Value(),
-		data:      msg.Data(),
-		state:     evm.StateDB,
+// A Message contains the data derived from a single transaction that is relevant to state
+// processing.
+type Message struct {
+	To         *common.Address
+	From       common.Address
+	Nonce      uint64
+	Value      *big.Int
+	GasLimit   uint64
+	GasPrice   *big.Int
+	GasFeeCap  *big.Int
+	GasTipCap  *big.Int
+	Data       []byte
+	AccessList types.AccessList
+
+	// When SkipAccountCheckss is true, the message nonce is not checked against the
+	// account nonce in state. It also disables checking that the sender is an EOA.
+	// This field will be set to true for operations like RPC eth_call.
+	SkipAccountChecks bool
+}
+
+// TransactionToMessage converts a transaction into a Message.
+func TransactionToMessage(tx *types.Transaction, s types.Signer, baseFee *big.Int) (*Message, error) {
+	msg := &Message{
+		Nonce:             tx.Nonce(),
+		GasLimit:          tx.Gas(),
+		GasPrice:          new(big.Int).Set(tx.GasPrice()),
+		GasFeeCap:         new(big.Int).Set(tx.GasFeeCap()),
+		GasTipCap:         new(big.Int).Set(tx.GasTipCap()),
+		To:                tx.To(),
+		Value:             tx.Value(),
+		Data:              tx.Data(),
+		AccessList:        tx.AccessList(),
+		SkipAccountChecks: false,
 	}
+	// If baseFee provided, set gasPrice to effectiveGasPrice.
+	if baseFee != nil {
+		msg.GasPrice = cmath.BigMin(msg.GasPrice.Add(msg.GasTipCap, baseFee), msg.GasFeeCap)
+	}
+	var err error
+	msg.From, err = types.Sender(s, tx)
+	return msg, err
 }
 
 // ApplyMessage computes the new state by applying the given message
@@ -200,82 +172,126 @@ func NewStateTransition(evm *vm.EVM, msg Message, gp *GasPool) *StateTransition
 // the gas used (which includes gas refunds) and an error if it failed. An error always
 // indicates a core error meaning that the message would always fail for that particular
 // state and would never be accepted within a block.
-func ApplyMessage(evm *vm.EVM, msg Message, gp *GasPool) (*ExecutionResult, error) {
+func ApplyMessage(evm *vm.EVM, msg *Message, gp *GasPool) (*ExecutionResult, error) {
 	return NewStateTransition(evm, msg, gp).TransitionDb()
 }
 
+// StateTransition represents a state transition.
+//
+// == The State Transitioning Model
+//
+// A state transition is a change made when a transaction is applied to the current world
+// state. The state transitioning model does all the necessary work to work out a valid new
+// state root.
+//
+//  1. Nonce handling
+//  2. Pre pay gas
+//  3. Create a new state object if the recipient is nil
+//  4. Value transfer
+//
+// == If contract creation ==
+//
+//	4a. Attempt to run transaction data
+//	4b. If valid, use result as code for the new state object
+//
+// == end ==
+//
+//  5. Run Script section
+//  6. Derive new state root
+type StateTransition struct {
+	gp           *GasPool
+	msg          *Message
+	gasRemaining uint64
+	initialGas   uint64
+	state        vm.StateDB
+	evm          *vm.EVM
+}
+
+// NewStateTransition initialises and returns a new state transition object.
+func NewStateTransition(evm *vm.EVM, msg *Message, gp *GasPool) *StateTransition {
+	return &StateTransition{
+		gp:    gp,
+		evm:   evm,
+		msg:   msg,
+		state: evm.StateDB,
+	}
+}
+
 // to returns the recipient of the message.
 func (st *StateTransition) to() common.Address {
-	if st.msg == nil || st.msg.To() == nil /* contract creation */ {
+	if st.msg == nil || st.msg.To == nil /* contract creation */ {
 		return common.Address{}
 	}
-	return *st.msg.To()
+	return *st.msg.To
 }
 
 func (st *StateTransition) buyGas() error {
-	mgval := new(big.Int).SetUint64(st.msg.Gas())
-	mgval = mgval.Mul(mgval, st.gasPrice)
+	mgval := new(big.Int).SetUint64(st.msg.GasLimit)
+	mgval = mgval.Mul(mgval, st.msg.GasPrice)
 	balanceCheck := mgval
-	if st.gasFeeCap != nil {
-		balanceCheck = new(big.Int).SetUint64(st.msg.Gas())
-		balanceCheck = balanceCheck.Mul(balanceCheck, st.gasFeeCap)
-		balanceCheck.Add(balanceCheck, st.value)
+	if st.msg.GasFeeCap != nil {
+		balanceCheck = new(big.Int).SetUint64(st.msg.GasLimit)
+		balanceCheck = balanceCheck.Mul(balanceCheck, st.msg.GasFeeCap)
+		balanceCheck.Add(balanceCheck, st.msg.Value)
 	}
-	if have, want := st.state.GetBalance(st.msg.From()), balanceCheck; have.Cmp(want) < 0 {
-		return fmt.Errorf("%w: address %v have %v want %v", ErrInsufficientFunds, st.msg.From().Hex(), have, want)
+	if have, want := st.state.GetBalance(st.msg.From), balanceCheck; have.Cmp(want) < 0 {
+		return fmt.Errorf("%w: address %v have %v want %v", ErrInsufficientFunds, st.msg.From.Hex(), have, want)
 	}
-	if err := st.gp.SubGas(st.msg.Gas()); err != nil {
+	if err := st.gp.SubGas(st.msg.GasLimit); err != nil {
 		return err
 	}
-	st.gas += st.msg.Gas()
+	st.gasRemaining += st.msg.GasLimit
 
-	st.initialGas = st.msg.Gas()
-	st.state.SubBalance(st.msg.From(), mgval)
+	st.initialGas = st.msg.GasLimit
+	st.state.SubBalance(st.msg.From, mgval)
 	return nil
 }
 
 func (st *StateTransition) preCheck() error {
 	// Only check transactions that are not fake
-	if !st.msg.IsFake() {
+	msg := st.msg
+	if !msg.SkipAccountChecks {
 		// Make sure this transaction's nonce is correct.
-		stNonce := st.state.GetNonce(st.msg.From())
-		if msgNonce := st.msg.Nonce(); stNonce < msgNonce {
+		stNonce := st.state.GetNonce(msg.From)
+		if msgNonce := msg.Nonce; stNonce < msgNonce {
 			return fmt.Errorf("%w: address %v, tx: %d state: %d", ErrNonceTooHigh,
-				st.msg.From().Hex(), msgNonce, stNonce)
+				msg.From.Hex(), msgNonce, stNonce)
 		} else if stNonce > msgNonce {
 			return fmt.Errorf("%w: address %v, tx: %d state: %d", ErrNonceTooLow,
-				st.msg.From().Hex(), msgNonce, stNonce)
+				msg.From.Hex(), msgNonce, stNonce)
 		} else if stNonce+1 < stNonce {
 			return fmt.Errorf("%w: address %v, nonce: %d", ErrNonceMax,
-				st.msg.From().Hex(), stNonce)
+				msg.From.Hex(), stNonce)
 		}
 		// Make sure the sender is an EOA
-		if codeHash := st.state.GetCodeHash(st.msg.From()); codeHash != emptyCodeHash && codeHash != (common.Hash{}) {
+		codeHash := st.state.GetCodeHash(msg.From)
+		if codeHash != (common.Hash{}) && codeHash != types.EmptyCodeHash {
 			return fmt.Errorf("%w: address %v, codehash: %s", ErrSenderNoEOA,
-				st.msg.From().Hex(), codeHash)
+				msg.From.Hex(), codeHash)
 		}
 	}
+
 	// Make sure that transaction gasFeeCap is greater than the baseFee (post london)
 	if st.evm.ChainConfig().IsLondon(st.evm.Context.BlockNumber) {
 		// Skip the checks if gas fields are zero and baseFee was explicitly disabled (eth_call)
-		if !st.evm.Config.NoBaseFee || st.gasFeeCap.BitLen() > 0 || st.gasTipCap.BitLen() > 0 {
-			if l := st.gasFeeCap.BitLen(); l > 256 {
+		if !st.evm.Config.NoBaseFee || msg.GasFeeCap.BitLen() > 0 || msg.GasTipCap.BitLen() > 0 {
+			if l := msg.GasFeeCap.BitLen(); l > 256 {
 				return fmt.Errorf("%w: address %v, maxFeePerGas bit length: %d", ErrFeeCapVeryHigh,
-					st.msg.From().Hex(), l)
+					msg.From.Hex(), l)
 			}
-			if l := st.gasTipCap.BitLen(); l > 256 {
+			if l := msg.GasTipCap.BitLen(); l > 256 {
 				return fmt.Errorf("%w: address %v, maxPriorityFeePerGas bit length: %d", ErrTipVeryHigh,
-					st.msg.From().Hex(), l)
+					msg.From.Hex(), l)
 			}
-			if st.gasFeeCap.Cmp(st.gasTipCap) < 0 {
+			if msg.GasFeeCap.Cmp(msg.GasTipCap) < 0 {
 				return fmt.Errorf("%w: address %v, maxPriorityFeePerGas: %s, maxFeePerGas: %s", ErrTipAboveFeeCap,
-					st.msg.From().Hex(), st.gasTipCap, st.gasFeeCap)
+					msg.From.Hex(), msg.GasTipCap, msg.GasFeeCap)
 			}
 			// This will panic if baseFee is nil, but basefee presence is verified
 			// as part of header validation.
-			if st.gasFeeCap.Cmp(st.evm.Context.BaseFee) < 0 {
+			if msg.GasFeeCap.Cmp(st.evm.Context.BaseFee) < 0 {
 				return fmt.Errorf("%w: address %v, maxFeePerGas: %s baseFee: %s", ErrFeeCapTooLow,
-					st.msg.From().Hex(), st.gasFeeCap, st.evm.Context.BaseFee)
+					msg.From.Hex(), msg.GasFeeCap, st.evm.Context.BaseFee)
 			}
 		}
 	}
@@ -311,52 +327,52 @@ func (st *StateTransition) TransitionDb() (*ExecutionResult, error) {
 	if st.evm.Config.Debug {
 		st.evm.Config.Tracer.CaptureTxStart(st.initialGas)
 		defer func() {
-			st.evm.Config.Tracer.CaptureTxEnd(st.gas)
+			st.evm.Config.Tracer.CaptureTxEnd(st.gasRemaining)
 		}()
 	}
 
 	var (
 		msg              = st.msg
-		sender           = vm.AccountRef(msg.From())
+		sender           = vm.AccountRef(msg.From)
 		rules            = st.evm.ChainConfig().Rules(st.evm.Context.BlockNumber, st.evm.Context.Random != nil, st.evm.Context.Time)
-		contractCreation = msg.To() == nil
+		contractCreation = msg.To == nil
 	)
 
 	// Check clauses 4-5, subtract intrinsic gas if everything is correct
-	gas, err := IntrinsicGas(st.data, st.msg.AccessList(), contractCreation, rules.IsHomestead, rules.IsIstanbul, rules.IsShanghai)
+	gas, err := IntrinsicGas(msg.Data, msg.AccessList, contractCreation, rules.IsHomestead, rules.IsIstanbul, rules.IsShanghai)
 	if err != nil {
 		return nil, err
 	}
-	if st.gas < gas {
-		return nil, fmt.Errorf("%w: have %d, want %d", ErrIntrinsicGas, st.gas, gas)
+	if st.gasRemaining < gas {
+		return nil, fmt.Errorf("%w: have %d, want %d", ErrIntrinsicGas, st.gasRemaining, gas)
 	}
-	st.gas -= gas
+	st.gasRemaining -= gas
 
 	// Check clause 6
-	if msg.Value().Sign() > 0 && !st.evm.Context.CanTransfer(st.state, msg.From(), msg.Value()) {
-		return nil, fmt.Errorf("%w: address %v", ErrInsufficientFundsForTransfer, msg.From().Hex())
+	if msg.Value.Sign() > 0 && !st.evm.Context.CanTransfer(st.state, msg.From, msg.Value) {
+		return nil, fmt.Errorf("%w: address %v", ErrInsufficientFundsForTransfer, msg.From.Hex())
 	}
 
 	// Check whether the init code size has been exceeded.
-	if rules.IsShanghai && contractCreation && len(st.data) > params.MaxInitCodeSize {
-		return nil, fmt.Errorf("%w: code size %v limit %v", ErrMaxInitCodeSizeExceeded, len(st.data), params.MaxInitCodeSize)
+	if rules.IsShanghai && contractCreation && len(msg.Data) > params.MaxInitCodeSize {
+		return nil, fmt.Errorf("%w: code size %v limit %v", ErrMaxInitCodeSizeExceeded, len(msg.Data), params.MaxInitCodeSize)
 	}
 
 	// Execute the preparatory steps for state transition which includes:
 	// - prepare accessList(post-berlin)
 	// - reset transient storage(eip 1153)
-	st.state.Prepare(rules, msg.From(), st.evm.Context.Coinbase, msg.To(), vm.ActivePrecompiles(rules), msg.AccessList())
+	st.state.Prepare(rules, msg.From, st.evm.Context.Coinbase, msg.To, vm.ActivePrecompiles(rules), msg.AccessList)
 
 	var (
 		ret   []byte
 		vmerr error // vm errors do not effect consensus and are therefore not assigned to err
 	)
 	if contractCreation {
-		ret, _, st.gas, vmerr = st.evm.Create(sender, st.data, st.gas, st.value)
+		ret, _, st.gasRemaining, vmerr = st.evm.Create(sender, msg.Data, st.gasRemaining, msg.Value)
 	} else {
 		// Increment the nonce for the next transaction
-		st.state.SetNonce(msg.From(), st.state.GetNonce(sender.Address())+1)
-		ret, st.gas, vmerr = st.evm.Call(sender, st.to(), st.data, st.gas, st.value)
+		st.state.SetNonce(msg.From, st.state.GetNonce(sender.Address())+1)
+		ret, st.gasRemaining, vmerr = st.evm.Call(sender, st.to(), msg.Data, st.gasRemaining, msg.Value)
 	}
 
 	if !rules.IsLondon {
@@ -366,12 +382,12 @@ func (st *StateTransition) TransitionDb() (*ExecutionResult, error) {
 		// After EIP-3529: refunds are capped to gasUsed / 5
 		st.refundGas(params.RefundQuotientEIP3529)
 	}
-	effectiveTip := st.gasPrice
+	effectiveTip := msg.GasPrice
 	if rules.IsLondon {
-		effectiveTip = cmath.BigMin(st.gasTipCap, new(big.Int).Sub(st.gasFeeCap, st.evm.Context.BaseFee))
+		effectiveTip = cmath.BigMin(msg.GasTipCap, new(big.Int).Sub(msg.GasFeeCap, st.evm.Context.BaseFee))
 	}
 
-	if st.evm.Config.NoBaseFee && st.gasFeeCap.Sign() == 0 && st.gasTipCap.Sign() == 0 {
+	if st.evm.Config.NoBaseFee && msg.GasFeeCap.Sign() == 0 && msg.GasTipCap.Sign() == 0 {
 		// Skip fee payment when NoBaseFee is set and the fee fields
 		// are 0. This avoids a negative effectiveTip being applied to
 		// the coinbase when simulating calls.
@@ -394,18 +410,18 @@ func (st *StateTransition) refundGas(refundQuotient uint64) {
 	if refund > st.state.GetRefund() {
 		refund = st.state.GetRefund()
 	}
-	st.gas += refund
+	st.gasRemaining += refund
 
 	// Return ETH for remaining gas, exchanged at the original rate.
-	remaining := new(big.Int).Mul(new(big.Int).SetUint64(st.gas), st.gasPrice)
-	st.state.AddBalance(st.msg.From(), remaining)
+	remaining := new(big.Int).Mul(new(big.Int).SetUint64(st.gasRemaining), st.msg.GasPrice)
+	st.state.AddBalance(st.msg.From, remaining)
 
 	// Also return remaining gas to the block gas counter so it is
 	// available for the next transaction.
-	st.gp.AddGas(st.gas)
+	st.gp.AddGas(st.gasRemaining)
 }
 
 // gasUsed returns the amount of gas used up by the state transition.
 func (st *StateTransition) gasUsed() uint64 {
-	return st.initialGas - st.gas
+	return st.initialGas - st.gasRemaining
 }

core/types/transaction.go

@@ -589,74 +589,6 @@ func (t *TransactionsByPriceAndNonce) Pop() {
 	heap.Pop(&t.heads)
 }
 
-// Message is a fully derived transaction and implements core.Message
-//
-// NOTE: In a future PR this will be removed.
-type Message struct {
-	to         *common.Address
-	from       common.Address
-	nonce      uint64
-	amount     *big.Int
-	gasLimit   uint64
-	gasPrice   *big.Int
-	gasFeeCap  *big.Int
-	gasTipCap  *big.Int
-	data       []byte
-	accessList AccessList
-	isFake     bool
-}
-
-func NewMessage(from common.Address, to *common.Address, nonce uint64, amount *big.Int, gasLimit uint64, gasPrice, gasFeeCap, gasTipCap *big.Int, data []byte, accessList AccessList, isFake bool) Message {
-	return Message{
-		from:       from,
-		to:         to,
-		nonce:      nonce,
-		amount:     amount,
-		gasLimit:   gasLimit,
-		gasPrice:   gasPrice,
-		gasFeeCap:  gasFeeCap,
-		gasTipCap:  gasTipCap,
-		data:       data,
-		accessList: accessList,
-		isFake:     isFake,
-	}
-}
-
-// AsMessage returns the transaction as a core.Message.
-func (tx *Transaction) AsMessage(s Signer, baseFee *big.Int) (Message, error) {
-	msg := Message{
-		nonce:      tx.Nonce(),
-		gasLimit:   tx.Gas(),
-		gasPrice:   new(big.Int).Set(tx.GasPrice()),
-		gasFeeCap:  new(big.Int).Set(tx.GasFeeCap()),
-		gasTipCap:  new(big.Int).Set(tx.GasTipCap()),
-		to:         tx.To(),
-		amount:     tx.Value(),
-		data:       tx.Data(),
-		accessList: tx.AccessList(),
-		isFake:     false,
-	}
-	// If baseFee provided, set gasPrice to effectiveGasPrice.
-	if baseFee != nil {
-		msg.gasPrice = math.BigMin(msg.gasPrice.Add(msg.gasTipCap, baseFee), msg.gasFeeCap)
-	}
-	var err error
-	msg.from, err = Sender(s, tx)
-	return msg, err
-}
-
-func (m Message) From() common.Address   { return m.from }
-func (m Message) To() *common.Address    { return m.to }
-func (m Message) GasPrice() *big.Int     { return m.gasPrice }
-func (m Message) GasFeeCap() *big.Int    { return m.gasFeeCap }
-func (m Message) GasTipCap() *big.Int    { return m.gasTipCap }
-func (m Message) Value() *big.Int        { return m.amount }
-func (m Message) Gas() uint64            { return m.gasLimit }
-func (m Message) Nonce() uint64          { return m.nonce }
-func (m Message) Data() []byte           { return m.data }
-func (m Message) AccessList() AccessList { return m.accessList }
-func (m Message) IsFake() bool           { return m.isFake }
-
 // copyAddressPtr copies an address.
 func copyAddressPtr(a *common.Address) *common.Address {
 	if a == nil {