core/types/bal: changes blockAccessList to a slice of AccessList

core/types/bal/bal.go

@@ -25,7 +25,7 @@ import (
 )
 
 // ConstructionAccountAccess contains post-block account state for mutations as well as
-// all storage keys that were read during execution.  It is used when building block
+// all storage keys that were read during execution. It is used when building block
 // access list during execution.
 type ConstructionAccountAccess struct {
 	// StorageWrites is the post-state values of an account's storage slots

core/types/bal/bal_encoding.go

@@ -33,26 +33,58 @@ import (
 	"github.com/holiman/uint256"
 )
 
-//go:generate go run github.com/ethereum/go-ethereum/rlp/rlpgen -out bal_encoding_rlp_generated.go -type BlockAccessList -decoder
+//go:generate go run github.com/ethereum/go-ethereum/rlp/rlpgen -out bal_encoding_rlp_generated.go -type AccountAccess -decoder
 
 // These are objects used as input for the access list encoding. They mirror
 // the spec format.
 
 // BlockAccessList is the encoding format of ConstructionBlockAccessList.
-type BlockAccessList struct {
-	Accesses []AccountAccess
+type BlockAccessList []AccountAccess
+
+// EncodeRLP implements rlp.Encoder. It encodes the access list as a single
+// RLP list of AccountAccess entries.
+func (e BlockAccessList) EncodeRLP(w io.Writer) error {
+	buf := rlp.NewEncoderBuffer(w)
+	l := buf.List()
+	for i := range e {
+		if err := e[i].EncodeRLP(buf); err != nil {
+			return err
+		}
+	}
+	buf.ListEnd(l)
+	return buf.Flush()
+}
+
+// DecodeRLP implements rlp.Decoder.
+func (e *BlockAccessList) DecodeRLP(s *rlp.Stream) error {
+	if _, err := s.List(); err != nil {
+		return err
+	}
+	var list BlockAccessList
+	for s.MoreDataInList() {
+		var a AccountAccess
+		if err := a.DecodeRLP(s); err != nil {
+			return err
+		}
+		list = append(list, a)
+	}
+	if err := s.ListEnd(); err != nil {
+		return err
+	}
+	*e = list
+	return nil
 }
 
 // Validate returns an error if the contents of the access list are not ordered
 // according to the spec or any code changes are contained which exceed protocol
 // max code size.
 func (e *BlockAccessList) Validate() error {
-	if !slices.IsSortedFunc(e.Accesses, func(a, b AccountAccess) int {
+	if !slices.IsSortedFunc(*e, func(a, b AccountAccess) int {
 		return bytes.Compare(a.Address[:], b.Address[:])
 	}) {
 		return errors.New("block access list accounts not in lexicographic order")
 	}
-	for _, entry := range e.Accesses {
+	for _, entry := range *e {
 		if err := entry.validate(); err != nil {
 			return err
 		}
@@ -63,12 +95,11 @@ func (e *BlockAccessList) Validate() error {
 // Hash computes the keccak256 hash of the access list
 func (e *BlockAccessList) Hash() common.Hash {
 	var enc bytes.Buffer
-	err := e.EncodeRLP(&enc)
-	if err != nil {
-		// errors here are related to BAL values exceeding maximum size defined
-		// by the spec. Hard-fail because these cases are not expected to be hit
-		// under reasonable conditions.
-		panic(err)
+	if err := e.EncodeRLP(&enc); err != nil {
+		// Errors here are related to BAL values exceeding maximum size defined
+		// by the spec. Return empty hash because these cases are not expected
+		// to be hit under reasonable conditions.
+		return common.Hash{}
 	}
 	return crypto.Keccak256Hash(enc.Bytes())
 }
@@ -308,9 +339,9 @@ func (b *ConstructionBlockAccessList) toEncodingObj() *BlockAccessList {
 	}
 	slices.SortFunc(addresses, common.Address.Cmp)
 
-	var res BlockAccessList
+	res := make(BlockAccessList, 0, len(addresses))
 	for _, addr := range addresses {
-		res.Accesses = append(res.Accesses, b.Accounts[addr].toEncodingObj(addr))
+		res = append(res, b.Accounts[addr].toEncodingObj(addr))
 	}
 	return &res
 }
@@ -320,7 +351,7 @@ func (e *BlockAccessList) PrettyPrint() string {
 	printWithIndent := func(indent int, text string) {
 		fmt.Fprintf(&res, "%s%s\n", strings.Repeat("    ", indent), text)
 	}
-	for _, accountDiff := range e.Accesses {
+	for _, accountDiff := range *e {
 		printWithIndent(0, fmt.Sprintf("%x:", accountDiff.Address))
 
 		printWithIndent(1, "storage writes:")
@@ -356,11 +387,9 @@ func (e *BlockAccessList) PrettyPrint() string {
 
 // Copy returns a deep copy of the access list
 func (e *BlockAccessList) Copy() *BlockAccessList {
-	cpy := &BlockAccessList{
-		Accesses: make([]AccountAccess, 0, len(e.Accesses)),
+	cpy := make(BlockAccessList, 0, len(*e))
+	for _, accountAccess := range *e {
+		cpy = append(cpy, accountAccess.Copy())
 	}
-	for _, accountAccess := range e.Accesses {
-		cpy.Accesses = append(cpy.Accesses, accountAccess.Copy())
-	}
-	return cpy
+	return &cpy
 }

core/types/bal/bal_encoding_rlp_generated.go

@@ -6,288 +6,261 @@ import "github.com/ethereum/go-ethereum/rlp"
 import "github.com/holiman/uint256"
 import "io"
 
-func (obj *BlockAccessList) EncodeRLP(_w io.Writer) error {
+func (obj *AccountAccess) EncodeRLP(_w io.Writer) error {
 	w := rlp.NewEncoderBuffer(_w)
 	_tmp0 := w.List()
+	w.WriteBytes(obj.Address[:])
 	_tmp1 := w.List()
-	for _, _tmp2 := range obj.Accesses {
+	for _, _tmp2 := range obj.StorageWrites {
 		_tmp3 := w.List()
-		w.WriteBytes(_tmp2.Address[:])
+		if _tmp2.Slot == nil {
+			w.Write(rlp.EmptyString)
+		} else {
+			w.WriteUint256(_tmp2.Slot)
+		}
 		_tmp4 := w.List()
-		for _, _tmp5 := range _tmp2.StorageWrites {
+		for _, _tmp5 := range _tmp2.Accesses {
 			_tmp6 := w.List()
-			if _tmp5.Slot == nil {
+			w.WriteUint64(uint64(_tmp5.TxIdx))
+			if _tmp5.ValueAfter == nil {
 				w.Write(rlp.EmptyString)
 			} else {
-				w.WriteUint256(_tmp5.Slot)
+				w.WriteUint256(_tmp5.ValueAfter)
 			}
-			_tmp7 := w.List()
-			for _, _tmp8 := range _tmp5.Accesses {
-				_tmp9 := w.List()
-				w.WriteUint64(uint64(_tmp8.TxIdx))
-				if _tmp8.ValueAfter == nil {
-					w.Write(rlp.EmptyString)
-				} else {
-					w.WriteUint256(_tmp8.ValueAfter)
-				}
-				w.ListEnd(_tmp9)
-			}
-			w.ListEnd(_tmp7)
 			w.ListEnd(_tmp6)
 		}
 		w.ListEnd(_tmp4)
-		_tmp10 := w.List()
-		for _, _tmp11 := range _tmp2.StorageReads {
-			if _tmp11 == nil {
-				w.Write(rlp.EmptyString)
-			} else {
-				w.WriteUint256(_tmp11)
-			}
-		}
-		w.ListEnd(_tmp10)
-		_tmp12 := w.List()
-		for _, _tmp13 := range _tmp2.BalanceChanges {
-			_tmp14 := w.List()
-			w.WriteUint64(uint64(_tmp13.TxIdx))
-			if _tmp13.Balance == nil {
-				w.Write(rlp.EmptyString)
-			} else {
-				w.WriteUint256(_tmp13.Balance)
-			}
-			w.ListEnd(_tmp14)
-		}
-		w.ListEnd(_tmp12)
-		_tmp15 := w.List()
-		for _, _tmp16 := range _tmp2.NonceChanges {
-			_tmp17 := w.List()
-			w.WriteUint64(uint64(_tmp16.TxIdx))
-			w.WriteUint64(_tmp16.Nonce)
-			w.ListEnd(_tmp17)
-		}
-		w.ListEnd(_tmp15)
-		_tmp18 := w.List()
-		for _, _tmp19 := range _tmp2.CodeChanges {
-			_tmp20 := w.List()
-			w.WriteUint64(uint64(_tmp19.TxIndex))
-			w.WriteBytes(_tmp19.Code)
-			w.ListEnd(_tmp20)
-		}
-		w.ListEnd(_tmp18)
 		w.ListEnd(_tmp3)
 	}
 	w.ListEnd(_tmp1)
+	_tmp7 := w.List()
+	for _, _tmp8 := range obj.StorageReads {
+		if _tmp8 == nil {
+			w.Write(rlp.EmptyString)
+		} else {
+			w.WriteUint256(_tmp8)
+		}
+	}
+	w.ListEnd(_tmp7)
+	_tmp9 := w.List()
+	for _, _tmp10 := range obj.BalanceChanges {
+		_tmp11 := w.List()
+		w.WriteUint64(uint64(_tmp10.TxIdx))
+		if _tmp10.Balance == nil {
+			w.Write(rlp.EmptyString)
+		} else {
+			w.WriteUint256(_tmp10.Balance)
+		}
+		w.ListEnd(_tmp11)
+	}
+	w.ListEnd(_tmp9)
+	_tmp12 := w.List()
+	for _, _tmp13 := range obj.NonceChanges {
+		_tmp14 := w.List()
+		w.WriteUint64(uint64(_tmp13.TxIdx))
+		w.WriteUint64(_tmp13.Nonce)
+		w.ListEnd(_tmp14)
+	}
+	w.ListEnd(_tmp12)
+	_tmp15 := w.List()
+	for _, _tmp16 := range obj.CodeChanges {
+		_tmp17 := w.List()
+		w.WriteUint64(uint64(_tmp16.TxIndex))
+		w.WriteBytes(_tmp16.Code)
+		w.ListEnd(_tmp17)
+	}
+	w.ListEnd(_tmp15)
 	w.ListEnd(_tmp0)
 	return w.Flush()
 }
 
-func (obj *BlockAccessList) DecodeRLP(dec *rlp.Stream) error {
-	var _tmp0 BlockAccessList
+func (obj *AccountAccess) DecodeRLP(dec *rlp.Stream) error {
+	var _tmp0 AccountAccess
 	{
 		if _, err := dec.List(); err != nil {
 			return err
 		}
-		// Accesses:
-		var _tmp1 []AccountAccess
+		// Address:
+		var _tmp1 [20]byte
+		if err := dec.ReadBytes(_tmp1[:]); err != nil {
+			return err
+		}
+		_tmp0.Address = _tmp1
+		// StorageWrites:
+		var _tmp2 []encodingSlotWrites
 		if _, err := dec.List(); err != nil {
 			return err
 		}
 		for dec.MoreDataInList() {
-			var _tmp2 AccountAccess
+			var _tmp3 encodingSlotWrites
 			{
 				if _, err := dec.List(); err != nil {
 					return err
 				}
-				// Address:
-				var _tmp3 [20]byte
-				if err := dec.ReadBytes(_tmp3[:]); err != nil {
+				// Slot:
+				var _tmp4 uint256.Int
+				if err := dec.ReadUint256(&_tmp4); err != nil {
 					return err
 				}
-				_tmp2.Address = _tmp3
-				// StorageWrites:
-				var _tmp4 []encodingSlotWrites
+				_tmp3.Slot = &_tmp4
+				// Accesses:
+				var _tmp5 []encodingStorageWrite
 				if _, err := dec.List(); err != nil {
 					return err
 				}
 				for dec.MoreDataInList() {
-					var _tmp5 encodingSlotWrites
-					{
-						if _, err := dec.List(); err != nil {
-							return err
-						}
-						// Slot:
-						var _tmp6 uint256.Int
-						if err := dec.ReadUint256(&_tmp6); err != nil {
-							return err
-						}
-						_tmp5.Slot = &_tmp6
-						// Accesses:
-						var _tmp7 []encodingStorageWrite
-						if _, err := dec.List(); err != nil {
-							return err
-						}
-						for dec.MoreDataInList() {
-							var _tmp8 encodingStorageWrite
-							{
-								if _, err := dec.List(); err != nil {
-									return err
-								}
-								// TxIdx:
-								_tmp9, err := dec.Uint32()
-								if err != nil {
-									return err
-								}
-								_tmp8.TxIdx = _tmp9
-								// ValueAfter:
-								var _tmp10 uint256.Int
-								if err := dec.ReadUint256(&_tmp10); err != nil {
-									return err
-								}
-								_tmp8.ValueAfter = &_tmp10
-								if err := dec.ListEnd(); err != nil {
-									return err
-								}
-							}
-							_tmp7 = append(_tmp7, _tmp8)
-						}
-						if err := dec.ListEnd(); err != nil {
-							return err
-						}
-						_tmp5.Accesses = _tmp7
-						if err := dec.ListEnd(); err != nil {
-							return err
-						}
-					}
-					_tmp4 = append(_tmp4, _tmp5)
-				}
-				if err := dec.ListEnd(); err != nil {
-					return err
-				}
-				_tmp2.StorageWrites = _tmp4
-				// StorageReads:
-				var _tmp11 []*uint256.Int
-				if _, err := dec.List(); err != nil {
-					return err
-				}
-				for dec.MoreDataInList() {
-					var _tmp12 uint256.Int
-					if err := dec.ReadUint256(&_tmp12); err != nil {
-						return err
-					}
-					_tmp11 = append(_tmp11, &_tmp12)
-				}
-				if err := dec.ListEnd(); err != nil {
-					return err
-				}
-				_tmp2.StorageReads = _tmp11
-				// BalanceChanges:
-				var _tmp13 []encodingBalanceChange
-				if _, err := dec.List(); err != nil {
-					return err
-				}
-				for dec.MoreDataInList() {
-					var _tmp14 encodingBalanceChange
+					var _tmp6 encodingStorageWrite
 					{
 						if _, err := dec.List(); err != nil {
 							return err
 						}
 						// TxIdx:
-						_tmp15, err := dec.Uint32()
+						_tmp7, err := dec.Uint32()
 						if err != nil {
 							return err
 						}
-						_tmp14.TxIdx = _tmp15
-						// Balance:
-						var _tmp16 uint256.Int
-						if err := dec.ReadUint256(&_tmp16); err != nil {
+						_tmp6.TxIdx = _tmp7
+						// ValueAfter:
+						var _tmp8 uint256.Int
+						if err := dec.ReadUint256(&_tmp8); err != nil {
 							return err
 						}
-						_tmp14.Balance = &_tmp16
+						_tmp6.ValueAfter = &_tmp8
 						if err := dec.ListEnd(); err != nil {
 							return err
 						}
 					}
-					_tmp13 = append(_tmp13, _tmp14)
+					_tmp5 = append(_tmp5, _tmp6)
 				}
 				if err := dec.ListEnd(); err != nil {
 					return err
 				}
-				_tmp2.BalanceChanges = _tmp13
-				// NonceChanges:
-				var _tmp17 []encodingAccountNonce
-				if _, err := dec.List(); err != nil {
-					return err
-				}
-				for dec.MoreDataInList() {
-					var _tmp18 encodingAccountNonce
-					{
-						if _, err := dec.List(); err != nil {
-							return err
-						}
-						// TxIdx:
-						_tmp19, err := dec.Uint32()
-						if err != nil {
-							return err
-						}
-						_tmp18.TxIdx = _tmp19
-						// Nonce:
-						_tmp20, err := dec.Uint64()
-						if err != nil {
-							return err
-						}
-						_tmp18.Nonce = _tmp20
-						if err := dec.ListEnd(); err != nil {
-							return err
-						}
-					}
-					_tmp17 = append(_tmp17, _tmp18)
-				}
-				if err := dec.ListEnd(); err != nil {
-					return err
-				}
-				_tmp2.NonceChanges = _tmp17
-				// CodeChanges:
-				var _tmp21 []encodingCodeChange
-				if _, err := dec.List(); err != nil {
-					return err
-				}
-				for dec.MoreDataInList() {
-					var _tmp22 encodingCodeChange
-					{
-						if _, err := dec.List(); err != nil {
-							return err
-						}
-						// TxIndex:
-						_tmp23, err := dec.Uint32()
-						if err != nil {
-							return err
-						}
-						_tmp22.TxIndex = _tmp23
-						// Code:
-						_tmp24, err := dec.Bytes()
-						if err != nil {
-							return err
-						}
-						_tmp22.Code = _tmp24
-						if err := dec.ListEnd(); err != nil {
-							return err
-						}
-					}
-					_tmp21 = append(_tmp21, _tmp22)
-				}
-				if err := dec.ListEnd(); err != nil {
-					return err
-				}
-				_tmp2.CodeChanges = _tmp21
+				_tmp3.Accesses = _tmp5
 				if err := dec.ListEnd(); err != nil {
 					return err
 				}
 			}
-			_tmp1 = append(_tmp1, _tmp2)
+			_tmp2 = append(_tmp2, _tmp3)
 		}
 		if err := dec.ListEnd(); err != nil {
 			return err
 		}
-		_tmp0.Accesses = _tmp1
+		_tmp0.StorageWrites = _tmp2
+		// StorageReads:
+		var _tmp9 []*uint256.Int
+		if _, err := dec.List(); err != nil {
+			return err
+		}
+		for dec.MoreDataInList() {
+			var _tmp10 uint256.Int
+			if err := dec.ReadUint256(&_tmp10); err != nil {
+				return err
+			}
+			_tmp9 = append(_tmp9, &_tmp10)
+		}
+		if err := dec.ListEnd(); err != nil {
+			return err
+		}
+		_tmp0.StorageReads = _tmp9
+		// BalanceChanges:
+		var _tmp11 []encodingBalanceChange
+		if _, err := dec.List(); err != nil {
+			return err
+		}
+		for dec.MoreDataInList() {
+			var _tmp12 encodingBalanceChange
+			{
+				if _, err := dec.List(); err != nil {
+					return err
+				}
+				// TxIdx:
+				_tmp13, err := dec.Uint32()
+				if err != nil {
+					return err
+				}
+				_tmp12.TxIdx = _tmp13
+				// Balance:
+				var _tmp14 uint256.Int
+				if err := dec.ReadUint256(&_tmp14); err != nil {
+					return err
+				}
+				_tmp12.Balance = &_tmp14
+				if err := dec.ListEnd(); err != nil {
+					return err
+				}
+			}
+			_tmp11 = append(_tmp11, _tmp12)
+		}
+		if err := dec.ListEnd(); err != nil {
+			return err
+		}
+		_tmp0.BalanceChanges = _tmp11
+		// NonceChanges:
+		var _tmp15 []encodingAccountNonce
+		if _, err := dec.List(); err != nil {
+			return err
+		}
+		for dec.MoreDataInList() {
+			var _tmp16 encodingAccountNonce
+			{
+				if _, err := dec.List(); err != nil {
+					return err
+				}
+				// TxIdx:
+				_tmp17, err := dec.Uint32()
+				if err != nil {
+					return err
+				}
+				_tmp16.TxIdx = _tmp17
+				// Nonce:
+				_tmp18, err := dec.Uint64()
+				if err != nil {
+					return err
+				}
+				_tmp16.Nonce = _tmp18
+				if err := dec.ListEnd(); err != nil {
+					return err
+				}
+			}
+			_tmp15 = append(_tmp15, _tmp16)
+		}
+		if err := dec.ListEnd(); err != nil {
+			return err
+		}
+		_tmp0.NonceChanges = _tmp15
+		// CodeChanges:
+		var _tmp19 []encodingCodeChange
+		if _, err := dec.List(); err != nil {
+			return err
+		}
+		for dec.MoreDataInList() {
+			var _tmp20 encodingCodeChange
+			{
+				if _, err := dec.List(); err != nil {
+					return err
+				}
+				// TxIndex:
+				_tmp21, err := dec.Uint32()
+				if err != nil {
+					return err
+				}
+				_tmp20.TxIndex = _tmp21
+				// Code:
+				_tmp22, err := dec.Bytes()
+				if err != nil {
+					return err
+				}
+				_tmp20.Code = _tmp22
+				if err := dec.ListEnd(); err != nil {
+					return err
+				}
+			}
+			_tmp19 = append(_tmp19, _tmp20)
+		}
+		if err := dec.ListEnd(); err != nil {
+			return err
+		}
+		_tmp0.CodeChanges = _tmp19
 		if err := dec.ListEnd(); err != nil {
 			return err
 		}

core/types/bal/bal_test.go

@@ -29,13 +29,6 @@ import (
 	"github.com/holiman/uint256"
 )
 
-func equalBALs(a *BlockAccessList, b *BlockAccessList) bool {
-	if !reflect.DeepEqual(a, b) {
-		return false
-	}
-	return true
-}
-
 func makeTestConstructionBAL() *ConstructionBlockAccessList {
 	return &ConstructionBlockAccessList{
 		map[common.Address]*ConstructionAccountAccess{
@@ -101,13 +94,13 @@ func TestBALEncoding(t *testing.T) {
 		t.Fatalf("encoding failed: %v\n", err)
 	}
 	var dec BlockAccessList
-	if err := dec.DecodeRLP(rlp.NewStream(bytes.NewReader(buf.Bytes()), 10000000)); err != nil {
+	if err := dec.DecodeRLP(rlp.NewStream(bytes.NewReader(buf.Bytes()), 0)); err != nil {
 		t.Fatalf("decoding failed: %v\n", err)
 	}
 	if dec.Hash() != bal.toEncodingObj().Hash() {
 		t.Fatalf("encoded block hash doesn't match decoded")
 	}
-	if !equalBALs(bal.toEncodingObj(), &dec) {
+	if !reflect.DeepEqual(bal.toEncodingObj(), &dec) {
 		t.Fatal("decoded BAL doesn't match")
 	}
 }
@@ -118,6 +111,7 @@ func makeTestAccountAccess(sort bool) AccountAccess {
 		storageReads  []*uint256.Int
 		balances      []encodingBalanceChange
 		nonces        []encodingAccountNonce
+		codes         []encodingCodeChange
 	)
 	randSlot := func() *uint256.Int {
 		return new(uint256.Int).SetBytes(testrand.Bytes(32))
@@ -178,32 +172,39 @@ func makeTestAccountAccess(sort bool) AccountAccess {
 		})
 	}
 
+	for i := 0; i < 5; i++ {
+		codes = append(codes, encodingCodeChange{
+			TxIndex: uint32(2 * i),
+			Code:    testrand.Bytes(256),
+		})
+	}
+	if sort {
+		slices.SortFunc(codes, func(a, b encodingCodeChange) int {
+			return cmp.Compare[uint32](a.TxIndex, b.TxIndex)
+		})
+	}
+
 	return AccountAccess{
 		Address:        [20]byte(testrand.Bytes(20)),
 		StorageWrites:  storageWrites,
 		StorageReads:   storageReads,
 		BalanceChanges: balances,
 		NonceChanges:   nonces,
-		CodeChanges: []encodingCodeChange{
-			{
-				TxIndex: 100,
-				Code:    testrand.Bytes(256),
-			},
-		},
+		CodeChanges:    codes,
 	}
 }
 
 func makeTestBAL(sort bool) *BlockAccessList {
-	list := &BlockAccessList{}
+	list := make(BlockAccessList, 0, 5)
 	for i := 0; i < 5; i++ {
-		list.Accesses = append(list.Accesses, makeTestAccountAccess(sort))
+		list = append(list, makeTestAccountAccess(sort))
 	}
 	if sort {
-		slices.SortFunc(list.Accesses, func(a, b AccountAccess) int {
+		slices.SortFunc(list, func(a, b AccountAccess) int {
 			return bytes.Compare(a.Address[:], b.Address[:])
 		})
 	}
-	return list
+	return &list
 }
 
 func TestBlockAccessListCopy(t *testing.T) {
@@ -219,7 +220,7 @@ func TestBlockAccessListCopy(t *testing.T) {
 	}
 
 	// Make sure the mutations on copy won't affect the origin
-	for _, aa := range cpyCpy.Accesses {
+	for _, aa := range *cpyCpy {
 		for i := 0; i < len(aa.StorageReads); i++ {
 			aa.StorageReads[i] = new(uint256.Int).SetBytes(testrand.Bytes(32))
 		}

eth/protocols/snap/handler_test.go

@@ -48,7 +48,7 @@ func makeTestBAL(minSize int) *bal.BlockAccessList {
 		binary.BigEndian.PutUint64(b[24:], uint64(i))
 		access.StorageReads[i] = new(uint256.Int).SetBytes(b[:])
 	}
-	return &bal.BlockAccessList{Accesses: []bal.AccountAccess{access}}
+	return &bal.BlockAccessList{access}
 }
 
 // getChainWithBALs creates a minimal test chain with BALs stored for each block.