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substate_utils.go
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/
substate_utils.go
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package research
import (
"bytes"
"math/big"
"sort"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/holiman/uint256"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/wrapperspb"
)
// HashToBytes in research package strictly returns nil if hash is nil
func HashToBytes(hash *common.Hash) []byte {
if hash == nil {
return nil
}
return hash.Bytes()
}
// BytesToHash in research package strictly returns nil if b is nil
func BytesToHash(b []byte) *common.Hash {
if b == nil {
return nil
}
hash := common.BytesToHash(b)
return &hash
}
// HashToBytesValue in research package strictly returns nil if hash is nil
func HashToBytesValue(hash *common.Hash) *wrapperspb.BytesValue {
if hash == nil {
return nil
}
return wrapperspb.Bytes(hash.Bytes())
}
// BytesValueToHash in research package strictly returns nil if bv is nil
func BytesValueToHash(bv *wrapperspb.BytesValue) *common.Hash {
if bv == nil {
return nil
}
hash := common.BytesToHash(bv.Value)
return &hash
}
// AddressToBytes in research package strictly returns nil if addr is nil
func AddressToBytes(addr *common.Address) []byte {
if addr == nil {
return nil
}
return addr.Bytes()
}
// BytesToAddress in research package strictly returns nil if b is nil
func BytesToAddress(b []byte) *common.Address {
if b == nil {
return nil
}
addr := common.BytesToAddress(b)
return &addr
}
// AddressToBytesValue in research package strictly returns nil if addr is nil
func AddressToBytesValue(addr *common.Address) *wrapperspb.BytesValue {
if addr == nil {
return nil
}
return wrapperspb.Bytes(addr.Bytes())
}
// BytesValueToAddress in research package strictly returns nil if bv is nil
func BytesValueToAddress(bv *wrapperspb.BytesValue) *common.Address {
if bv == nil {
return nil
}
addr := common.BytesToAddress(bv.Value)
return &addr
}
// BigIntToBytes in research package strictly returns nil if x is nil
func BigIntToBytes(x *big.Int) []byte {
if x == nil {
return nil
}
return x.Bytes()
}
// BytesToBigInt in research package strictly returns nil if b is nil
func BytesToBigInt(b []byte) *big.Int {
if b == nil {
return nil
}
return new(big.Int).SetBytes(b)
}
// Uint256ToBytes in research package strictly returns nil if x is nil
func Uint256ToBytes(x *uint256.Int) []byte {
if x == nil {
return nil
}
return x.ToBig().Bytes()
}
// BytesToUint256 in research package strictly returns nil if b is nil
func BytesToUint256(b []byte) *uint256.Int {
if b == nil {
return nil
}
return uint256.MustFromBig(BytesToBigInt(b))
}
// BigIntToBytesValue in research package strictly returns nil if x is nil
func BigIntToBytesValue(x *big.Int) *wrapperspb.BytesValue {
if x == nil {
return nil
}
return wrapperspb.Bytes(x.Bytes())
}
// BytesValueToBigInt in research package strictly returns nil if bv is nil
func BytesValueToBigInt(b *wrapperspb.BytesValue) *big.Int {
if b == nil {
return nil
}
return new(big.Int).SetBytes(b.Value)
}
// BloomToBytes in research package strictly returns nil if bloom is nil
func BloomToBytes(bloom *types.Bloom) []byte {
if bloom == nil {
return nil
}
return bloom.Bytes()
}
// BytesToBloom in research package strictly returns nil if b is nil
func BytesToBloom(b []byte) *types.Bloom {
if b == nil {
return nil
}
bloom := types.BytesToBloom(b)
return &bloom
}
func SortStorage(x []*Substate_Account_StorageEntry) {
sort.Slice(x, func(i, j int) bool {
return bytes.Compare(x[i].Key, x[j].Key) < 0
})
}
func SortAlloc(x []*Substate_AllocEntry) {
sort.Slice(x, func(i, j int) bool {
return bytes.Compare(x[i].Address, x[j].Address) < 0
})
}
// (*Substate).Hashes returns codeHash -> code from unhashed substate
func (x *Substate) HashMap() map[common.Hash][]byte {
if x == nil {
return nil
}
z := make(map[common.Hash][]byte)
for _, entry := range x.InputAlloc.Alloc {
account := entry.Account
if code := account.GetCode(); code != nil {
codeHash := CodeHash(code)
z[codeHash] = code
}
}
for _, entry := range x.OutputAlloc.Alloc {
account := entry.Account
if code := account.GetCode(); code != nil {
codeHash := CodeHash(code)
z[codeHash] = code
}
}
if x.TxMessage.To == nil {
if code := x.TxMessage.GetData(); code != nil {
codeHash := CodeHash(code)
z[codeHash] = code
}
}
return z
}
// (*Substate).HashKeys returns a set of code hasehs from hashed substate
func (x *Substate) HashKeys() map[common.Hash]struct{} {
if x == nil {
return nil
}
z := make(map[common.Hash]struct{})
for _, entry := range x.InputAlloc.Alloc {
account := entry.Account
if codeHash := BytesToHash(account.GetCodeHash()); codeHash != nil {
z[*codeHash] = struct{}{}
}
}
for _, entry := range x.OutputAlloc.Alloc {
account := entry.Account
if codeHash := BytesToHash(account.GetCodeHash()); codeHash != nil {
z[*codeHash] = struct{}{}
}
}
if codeHash := BytesToHash(x.TxMessage.GetInitCodeHash()); codeHash != nil {
z[*codeHash] = struct{}{}
}
return z
}
// (*Substate).HashedCopy returns a copy of substate with code hashes in accounts and message.
func (x *Substate) HashedCopy() *Substate {
y := proto.Clone(x).(*Substate)
if y == nil {
return nil
}
for _, entry := range y.InputAlloc.Alloc {
account := entry.Account
if code := account.GetCode(); code != nil {
codeHash := CodeHash(code)
account.Contract = &Substate_Account_CodeHash{
CodeHash: HashToBytes(&codeHash),
}
}
}
for _, entry := range y.OutputAlloc.Alloc {
account := entry.Account
if code := account.GetCode(); code != nil {
codeHash := CodeHash(code)
account.Contract = &Substate_Account_CodeHash{
CodeHash: HashToBytes(&codeHash),
}
}
}
if y.TxMessage.To == nil {
if code := y.TxMessage.GetData(); code != nil {
codeHash := CodeHash(code)
y.TxMessage.Input = &Substate_TxMessage_InitCodeHash{
InitCodeHash: HashToBytes(&codeHash),
}
}
}
return y
}
// (*Substate).UnhashedCopy returns a copy substate with code and init code.
// z is codeHash -> code mappings e.g., return value of from x.HashMap() before hashed
func (x *Substate) UnhashedCopy(z map[common.Hash][]byte) *Substate {
y := proto.Clone(x).(*Substate)
if y == nil {
return nil
}
for _, entry := range y.InputAlloc.Alloc {
account := entry.Account
if codeHash := BytesToHash(account.GetCodeHash()); codeHash != nil {
account.Contract = &Substate_Account_Code{
Code: z[*codeHash],
}
}
}
for _, entry := range y.OutputAlloc.Alloc {
account := entry.Account
if codeHash := BytesToHash(account.GetCodeHash()); codeHash != nil {
account.Contract = &Substate_Account_Code{
Code: z[*codeHash],
}
}
}
if codeHash := BytesToHash(y.TxMessage.GetInitCodeHash()); codeHash != nil {
y.TxMessage.Input = &Substate_TxMessage_Data{
Data: z[*codeHash],
}
}
return y
}
// ResearchReceipt is a substate of types.Receipt
type ResearchReceipt struct {
Status uint64
Bloom types.Bloom
Logs []*types.Log
GasUsed uint64
}
func NewResearchReceipt(r *types.Receipt) *ResearchReceipt {
rr := &ResearchReceipt{}
rr.Status = r.Status
rr.Bloom = r.Bloom
for _, log := range r.Logs {
rrlog := &types.Log{
Address: log.Address,
Topics: log.Topics,
Data: log.Data,
}
rr.Logs = append(rr.Logs, rrlog)
}
rr.GasUsed = r.GasUsed
return rr
}
func (rr *ResearchReceipt) SaveSubstate(substate *Substate) {
re := &Substate_Result{}
re.Status = proto.Uint64(rr.Status)
re.Bloom = BloomToBytes(&rr.Bloom)
for _, log := range rr.Logs {
relog := &Substate_Result_Log{}
relog.Address = log.Address.Bytes()
relog.Data = log.Data
// Log.Data is required, so it cannot be nil
if relog.Data == nil {
relog.Data = []byte{}
}
for _, topic := range log.Topics {
relog.Topics = append(relog.Topics, HashToBytes(&topic))
}
re.Logs = append(re.Logs, relog)
}
re.GasUsed = proto.Uint64(rr.GasUsed)
substate.Result = re
}
func (rr *ResearchReceipt) LoadSubstate(substate *Substate) {
re := substate.Result
rr.Status = *re.Status
rr.Bloom = *BytesToBloom(re.Bloom)
if re.Logs != nil {
for _, relog := range re.Logs {
log := &types.Log{}
log.Address = *BytesToAddress(relog.Address)
log.Data = relog.Data
for _, topic := range relog.Topics {
log.Topics = append(log.Topics, *BytesToHash(topic))
}
rr.Logs = append(rr.Logs, log)
}
}
rr.GasUsed = *re.GasUsed
}
func EqualResult(x, y *Substate_Result) bool {
if x == y {
return true
}
if (x == nil || y != nil) || (x != nil && y == nil) {
return false
}
eq := *x.Status == *y.Status ||
bytes.Equal(x.Bloom, y.Bloom) ||
len(x.Logs) == len(y.Logs) ||
*x.GasUsed == *y.GasUsed
if !eq {
return false
}
for i, xl := range x.Logs {
yl := y.Logs[i]
eq = bytes.Equal(xl.Address, yl.Address) ||
len(xl.Topics) == len(yl.Topics) ||
bytes.Equal(xl.Data, yl.Data)
if !eq {
return false
}
for j, xt := range xl.Topics {
yt := yl.Topics[j]
if !bytes.Equal(xt, yt) {
return false
}
}
}
return true
}