forks/go-ethereum
1
0
Fork 1
mirror of https://github.com/ethereum/go-ethereum.git synced 2026-08-19 18:32:23 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

core/type: Using uniformed receiver name

Browse source
This commit is contained in:
qshuai 2018-12-13 15:50:44 +08:00
parent 4e6f53ac33
commit c1e955fb3b
4 changed files with 302 additions and 302 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
core/state/dump.go
View file

@ -39,15 +39,15 @@ type Dump struct {
Accounts map[string]DumpAccount `json:"accounts"` Accounts map[string]DumpAccount `json:"accounts"`
} }
func (self *StateDB) RawDump() Dump { func (db *StateDB) RawDump() Dump {
dump := Dump{ dump := Dump{
Root: fmt.Sprintf("%x", self.trie.Hash()), Root: fmt.Sprintf("%x", db.trie.Hash()),
Accounts: make(map[string]DumpAccount), Accounts: make(map[string]DumpAccount),
} }
it := trie.NewIterator(self.trie.NodeIterator(nil)) it := trie.NewIterator(db.trie.NodeIterator(nil))
for it.Next() { for it.Next() {
addr := self.trie.GetKey(it.Key) addr := db.trie.GetKey(it.Key)
var data Account var data Account
if err := rlp.DecodeBytes(it.Value, &data); err != nil { if err := rlp.DecodeBytes(it.Value, &data); err != nil {
panic(err) panic(err)
@ -59,20 +59,20 @@ func (self *StateDB) RawDump() Dump {
Nonce: data.Nonce, Nonce: data.Nonce,
Root: common.Bytes2Hex(data.Root[:]), Root: common.Bytes2Hex(data.Root[:]),
CodeHash: common.Bytes2Hex(data.CodeHash), CodeHash: common.Bytes2Hex(data.CodeHash),
Code: common.Bytes2Hex(obj.Code(self.db)), Code: common.Bytes2Hex(obj.Code(db.db)),
Storage: make(map[string]string), Storage: make(map[string]string),
} }
storageIt := trie.NewIterator(obj.getTrie(self.db).NodeIterator(nil)) storageIt := trie.NewIterator(obj.getTrie(db.db).NodeIterator(nil))
for storageIt.Next() { for storageIt.Next() {
account.Storage[common.Bytes2Hex(self.trie.GetKey(storageIt.Key))] = common.Bytes2Hex(storageIt.Value) account.Storage[common.Bytes2Hex(db.trie.GetKey(storageIt.Key))] = common.Bytes2Hex(storageIt.Value)
} }
dump.Accounts[common.Bytes2Hex(addr)] = account dump.Accounts[common.Bytes2Hex(addr)] = account
} }
return dump return dump
} }
func (self *StateDB) Dump() []byte { func (db *StateDB) Dump() []byte {
json, err := json.MarshalIndent(self.RawDump(), "", " ") json, err := json.MarshalIndent(db.RawDump(), "", " ")
if err != nil { if err != nil {
fmt.Println("dump err", err) fmt.Println("dump err", err)
} }

228
core/state/state_object.go
View file

@ -31,23 +31,23 @@ var emptyCodeHash = crypto.Keccak256(nil)
type Code []byte type Code []byte
func (self Code) String() string { func (c Code) String() string {
return string(self) //strings.Join(Disassemble(self), " ") return string(c) //strings.Join(Disassemble(s), " ")
} }
type Storage map[common.Hash]common.Hash type Storage map[common.Hash]common.Hash
func (self Storage) String() (str string) { func (s Storage) String() (str string) {
for key, value := range self { for key, value := range s {
str += fmt.Sprintf("%X : %X\n", key, value) str += fmt.Sprintf("%X : %X\n", key, value)
} }
return return
} }
func (self Storage) Copy() Storage { func (s Storage) Copy() Storage {
cpy := make(Storage) cpy := make(Storage)
for key, value := range self { for key, value := range s {
cpy[key] = value cpy[key] = value
} }
@ -121,192 +121,192 @@ func newObject(db *StateDB, address common.Address, data Account) *stateObject {
} }
// EncodeRLP implements rlp.Encoder. // EncodeRLP implements rlp.Encoder.
func (c *stateObject) EncodeRLP(w io.Writer) error { func (s *stateObject) EncodeRLP(w io.Writer) error {
return rlp.Encode(w, c.data) return rlp.Encode(w, s.data)
} }
// setError remembers the first non-nil error it is called with. // setError remembers the first non-nil error it is called with.
func (self *stateObject) setError(err error) { func (s *stateObject) setError(err error) {
if self.dbErr == nil { if s.dbErr == nil {
self.dbErr = err s.dbErr = err
} }
} }
func (self *stateObject) markSuicided() { func (s *stateObject) markSuicided() {
self.suicided = true s.suicided = true
} }
func (c *stateObject) touch() { func (s *stateObject) touch() {
c.db.journal.append(touchChange{ s.db.journal.append(touchChange{
account: &c.address, account: &s.address,
}) })
if c.address == ripemd { if s.address == ripemd {
// Explicitly put it in the dirty-cache, which is otherwise generated from // Explicitly put it in the dirty-cache, which is otherwise generated from
// flattened journals. // flattened journals.
c.db.journal.dirty(c.address) s.db.journal.dirty(s.address)
} }
} }
func (c *stateObject) getTrie(db Database) Trie { func (s *stateObject) getTrie(db Database) Trie {
if c.trie == nil { if s.trie == nil {
var err error var err error
c.trie, err = db.OpenStorageTrie(c.addrHash, c.data.Root) s.trie, err = db.OpenStorageTrie(s.addrHash, s.data.Root)
if err != nil { if err != nil {
c.trie, _ = db.OpenStorageTrie(c.addrHash, common.Hash{}) s.trie, _ = db.OpenStorageTrie(s.addrHash, common.Hash{})
c.setError(fmt.Errorf("can't create storage trie: %v", err)) s.setError(fmt.Errorf("can't create storage trie: %v", err))
} }
} }
return c.trie return s.trie
} }
// GetState retrieves a value from the account storage trie. // GetState retrieves a value from the account storage trie.
func (self *stateObject) GetState(db Database, key common.Hash) common.Hash { func (s *stateObject) GetState(db Database, key common.Hash) common.Hash {
// If we have a dirty value for this state entry, return it // If we have a dirty value for this state entry, return it
value, dirty := self.dirtyStorage[key] value, dirty := s.dirtyStorage[key]
if dirty { if dirty {
return value return value
} }
// Otherwise return the entry's original value // Otherwise return the entry's original value
return self.GetCommittedState(db, key) return s.GetCommittedState(db, key)
} }
// GetCommittedState retrieves a value from the committed account storage trie. // GetCommittedState retrieves a value from the committed account storage trie.
func (self *stateObject) GetCommittedState(db Database, key common.Hash) common.Hash { func (s *stateObject) GetCommittedState(db Database, key common.Hash) common.Hash {
// If we have the original value cached, return that // If we have the original value cached, return that
value, cached := self.originStorage[key] value, cached := s.originStorage[key]
if cached { if cached {
return value return value
} }
// Otherwise load the value from the database // Otherwise load the value from the database
enc, err := self.getTrie(db).TryGet(key[:]) enc, err := s.getTrie(db).TryGet(key[:])
if err != nil { if err != nil {
self.setError(err) s.setError(err)
return common.Hash{} return common.Hash{}
} }
if len(enc) > 0 { if len(enc) > 0 {
_, content, _, err := rlp.Split(enc) _, content, _, err := rlp.Split(enc)
if err != nil { if err != nil {
self.setError(err) s.setError(err)
} }
value.SetBytes(content) value.SetBytes(content)
} }
self.originStorage[key] = value s.originStorage[key] = value
return value return value
} }
// SetState updates a value in account storage. // SetState updates a value in account storage.
func (self *stateObject) SetState(db Database, key, value common.Hash) { func (s *stateObject) SetState(db Database, key, value common.Hash) {
// If the new value is the same as old, don't set // If the new value is the same as old, don't set
prev := self.GetState(db, key) prev := s.GetState(db, key)
if prev == value { if prev == value {
return return
} }
// New value is different, update and journal the change // New value is different, update and journal the change
self.db.journal.append(storageChange{ s.db.journal.append(storageChange{
account: &self.address, account: &s.address,
key: key, key: key,
prevalue: prev, prevalue: prev,
}) })
self.setState(key, value) s.setState(key, value)
} }
func (self *stateObject) setState(key, value common.Hash) { func (s *stateObject) setState(key, value common.Hash) {
self.dirtyStorage[key] = value s.dirtyStorage[key] = value
} }
// updateTrie writes cached storage modifications into the object's storage trie. // updateTrie writes cached storage modifications into the object's storage trie.
func (self *stateObject) updateTrie(db Database) Trie { func (s *stateObject) updateTrie(db Database) Trie {
tr := self.getTrie(db) tr := s.getTrie(db)
for key, value := range self.dirtyStorage { for key, value := range s.dirtyStorage {
delete(self.dirtyStorage, key) delete(s.dirtyStorage, key)
// Skip noop changes, persist actual changes // Skip noop changes, persist actual changes
if value == self.originStorage[key] { if value == s.originStorage[key] {
continue continue
} }
self.originStorage[key] = value s.originStorage[key] = value
if (value == common.Hash{}) { if (value == common.Hash{}) {
self.setError(tr.TryDelete(key[:])) s.setError(tr.TryDelete(key[:]))
continue continue
} }
// Encoding []byte cannot fail, ok to ignore the error. // Encoding []byte cannot fail, ok to ignore the error.
v, _ := rlp.EncodeToBytes(bytes.TrimLeft(value[:], "\x00")) v, _ := rlp.EncodeToBytes(bytes.TrimLeft(value[:], "\x00"))
self.setError(tr.TryUpdate(key[:], v)) s.setError(tr.TryUpdate(key[:], v))
} }
return tr return tr
} }
// UpdateRoot sets the trie root to the current root hash of // UpdateRoot sets the trie root to the current root hash of
func (self *stateObject) updateRoot(db Database) { func (s *stateObject) updateRoot(db Database) {
self.updateTrie(db) s.updateTrie(db)
self.data.Root = self.trie.Hash() s.data.Root = s.trie.Hash()
} }
// CommitTrie the storage trie of the object to db. // CommitTrie the storage trie of the object to db.
// This updates the trie root. // This updates the trie root.
func (self *stateObject) CommitTrie(db Database) error { func (s *stateObject) CommitTrie(db Database) error {
self.updateTrie(db) s.updateTrie(db)
if self.dbErr != nil { if s.dbErr != nil {
return self.dbErr return s.dbErr
} }
root, err := self.trie.Commit(nil) root, err := s.trie.Commit(nil)
if err == nil { if err == nil {
self.data.Root = root s.data.Root = root
} }
return err return err
} }
// AddBalance removes amount from c's balance. // AddBalance removes amount from c's balance.
// It is used to add funds to the destination account of a transfer. // It is used to add funds to the destination account of a transfer.
func (c *stateObject) AddBalance(amount *big.Int) { func (s *stateObject) AddBalance(amount *big.Int) {
// EIP158: We must check emptiness for the objects such that the account // EIP158: We must check emptiness for the objects such that the account
// clearing (0,0,0 objects) can take effect. // clearing (0,0,0 objects) can take effect.
if amount.Sign() == 0 { if amount.Sign() == 0 {
if c.empty() { if s.empty() {
c.touch() s.touch()
} }
return return
} }
c.SetBalance(new(big.Int).Add(c.Balance(), amount)) s.SetBalance(new(big.Int).Add(s.Balance(), amount))
} }
// SubBalance removes amount from c's balance. // SubBalance removes amount from c's balance.
// It is used to remove funds from the origin account of a transfer. // It is used to remove funds from the origin account of a transfer.
func (c *stateObject) SubBalance(amount *big.Int) { func (s *stateObject) SubBalance(amount *big.Int) {
if amount.Sign() == 0 { if amount.Sign() == 0 {
return return
} }
c.SetBalance(new(big.Int).Sub(c.Balance(), amount)) s.SetBalance(new(big.Int).Sub(s.Balance(), amount))
} }
func (self *stateObject) SetBalance(amount *big.Int) { func (s *stateObject) SetBalance(amount *big.Int) {
self.db.journal.append(balanceChange{ s.db.journal.append(balanceChange{
account: &self.address, account: &s.address,
prev: new(big.Int).Set(self.data.Balance), prev: new(big.Int).Set(s.data.Balance),
}) })
self.setBalance(amount) s.setBalance(amount)
} }
func (self *stateObject) setBalance(amount *big.Int) { func (s *stateObject) setBalance(amount *big.Int) {
self.data.Balance = amount s.data.Balance = amount
} }
// Return the gas back to the origin. Used by the Virtual machine or Closures // Return the gas back to the origin. Used by the Virtual machine or Closures
func (c *stateObject) ReturnGas(gas *big.Int) {} func (s *stateObject) ReturnGas(gas *big.Int) {}
func (self *stateObject) deepCopy(db *StateDB) *stateObject { func (s *stateObject) deepCopy(db *StateDB) *stateObject {
stateObject := newObject(db, self.address, self.data) stateObject := newObject(db, s.address, s.data)
if self.trie != nil { if s.trie != nil {
stateObject.trie = db.db.CopyTrie(self.trie) stateObject.trie = db.db.CopyTrie(s.trie)
} }
stateObject.code = self.code stateObject.code = s.code
stateObject.dirtyStorage = self.dirtyStorage.Copy() stateObject.dirtyStorage = s.dirtyStorage.Copy()
stateObject.originStorage = self.originStorage.Copy() stateObject.originStorage = s.originStorage.Copy()
stateObject.suicided = self.suicided stateObject.suicided = s.suicided
stateObject.dirtyCode = self.dirtyCode stateObject.dirtyCode = s.dirtyCode
stateObject.deleted = self.deleted stateObject.deleted = s.deleted
return stateObject return stateObject
} }
@ -315,69 +315,69 @@ func (self *stateObject) deepCopy(db *StateDB) *stateObject {
// //
// Returns the address of the contract/account // Returns the address of the contract/account
func (c *stateObject) Address() common.Address { func (s *stateObject) Address() common.Address {
return c.address return s.address
} }
// Code returns the contract code associated with this object, if any. // Code returns the contract code associated with this object, if any.
func (self *stateObject) Code(db Database) []byte { func (s *stateObject) Code(db Database) []byte {
if self.code != nil { if s.code != nil {
return self.code return s.code
} }
if bytes.Equal(self.CodeHash(), emptyCodeHash) { if bytes.Equal(s.CodeHash(), emptyCodeHash) {
return nil return nil
} }
code, err := db.ContractCode(self.addrHash, common.BytesToHash(self.CodeHash())) code, err := db.ContractCode(s.addrHash, common.BytesToHash(s.CodeHash()))
if err != nil { if err != nil {
self.setError(fmt.Errorf("can't load code hash %x: %v", self.CodeHash(), err)) s.setError(fmt.Errorf("can't load code hash %x: %v", s.CodeHash(), err))
} }
self.code = code s.code = code
return code return code
} }
func (self *stateObject) SetCode(codeHash common.Hash, code []byte) { func (s *stateObject) SetCode(codeHash common.Hash, code []byte) {
prevcode := self.Code(self.db.db) prevcode := s.Code(s.db.db)
self.db.journal.append(codeChange{ s.db.journal.append(codeChange{
account: &self.address, account: &s.address,
prevhash: self.CodeHash(), prevhash: s.CodeHash(),
prevcode: prevcode, prevcode: prevcode,
}) })
self.setCode(codeHash, code) s.setCode(codeHash, code)
} }
func (self *stateObject) setCode(codeHash common.Hash, code []byte) { func (s *stateObject) setCode(codeHash common.Hash, code []byte) {
self.code = code s.code = code
self.data.CodeHash = codeHash[:] s.data.CodeHash = codeHash[:]
self.dirtyCode = true s.dirtyCode = true
} }
func (self *stateObject) SetNonce(nonce uint64) { func (s *stateObject) SetNonce(nonce uint64) {
self.db.journal.append(nonceChange{ s.db.journal.append(nonceChange{
account: &self.address, account: &s.address,
prev: self.data.Nonce, prev: s.data.Nonce,
}) })
self.setNonce(nonce) s.setNonce(nonce)
} }
func (self *stateObject) setNonce(nonce uint64) { func (s *stateObject) setNonce(nonce uint64) {
self.data.Nonce = nonce s.data.Nonce = nonce
} }
func (self *stateObject) CodeHash() []byte { func (s *stateObject) CodeHash() []byte {
return self.data.CodeHash return s.data.CodeHash
} }
func (self *stateObject) Balance() *big.Int { func (s *stateObject) Balance() *big.Int {
return self.data.Balance return s.data.Balance
} }
func (self *stateObject) Nonce() uint64 { func (s *stateObject) Nonce() uint64 {
return self.data.Nonce return s.data.Nonce
} }
// Never called, but must be present to allow stateObject to be used // Never called, but must be present to allow stateObject to be used
// as a vm.Account interface that also satisfies the vm.ContractRef // as a vm.Account interface that also satisfies the vm.ContractRef
// interface. Interfaces are awesome. // interface. Interfaces are awesome.
func (self *stateObject) Value() *big.Int { func (s *stateObject) Value() *big.Int {
panic("Value on stateObject should never be called") panic("Value on stateObject should never be called")
} }

354
core/state/statedb.go
View file

@ -106,114 +106,114 @@ func New(root common.Hash, db Database) (*StateDB, error) {
} }
// setError remembers the first non-nil error it is called with. // setError remembers the first non-nil error it is called with.
func (self *StateDB) setError(err error) { func (db *StateDB) setError(err error) {
if self.dbErr == nil { if db.dbErr == nil {
self.dbErr = err db.dbErr = err
} }
} }
func (self *StateDB) Error() error { func (db *StateDB) Error() error {
return self.dbErr return db.dbErr
} }
// Reset clears out all ephemeral state objects from the state db, but keeps // Reset clears out all ephemeral state objects from the state db, but keeps
// the underlying state trie to avoid reloading data for the next operations. // the underlying state trie to avoid reloading data for the next operations.
func (self *StateDB) Reset(root common.Hash) error { func (db *StateDB) Reset(root common.Hash) error {
tr, err := self.db.OpenTrie(root) tr, err := db.db.OpenTrie(root)
if err != nil { if err != nil {
return err return err
} }
self.trie = tr db.trie = tr
self.stateObjects = make(map[common.Address]*stateObject) db.stateObjects = make(map[common.Address]*stateObject)
self.stateObjectsDirty = make(map[common.Address]struct{}) db.stateObjectsDirty = make(map[common.Address]struct{})
self.thash = common.Hash{} db.thash = common.Hash{}
self.bhash = common.Hash{} db.bhash = common.Hash{}
self.txIndex = 0 db.txIndex = 0
self.logs = make(map[common.Hash][]*types.Log) db.logs = make(map[common.Hash][]*types.Log)
self.logSize = 0 db.logSize = 0
self.preimages = make(map[common.Hash][]byte) db.preimages = make(map[common.Hash][]byte)
self.clearJournalAndRefund() db.clearJournalAndRefund()
return nil return nil
} }
func (self *StateDB) AddLog(log *types.Log) { func (db *StateDB) AddLog(log *types.Log) {
self.journal.append(addLogChange{txhash: self.thash}) db.journal.append(addLogChange{txhash: db.thash})
log.TxHash = self.thash log.TxHash = db.thash
log.BlockHash = self.bhash log.BlockHash = db.bhash
log.TxIndex = uint(self.txIndex) log.TxIndex = uint(db.txIndex)
log.Index = self.logSize log.Index = db.logSize
self.logs[self.thash] = append(self.logs[self.thash], log) db.logs[db.thash] = append(db.logs[db.thash], log)
self.logSize++ db.logSize++
} }
func (self *StateDB) GetLogs(hash common.Hash) []*types.Log { func (db *StateDB) GetLogs(hash common.Hash) []*types.Log {
return self.logs[hash] return db.logs[hash]
} }
func (self *StateDB) Logs() []*types.Log { func (db *StateDB) Logs() []*types.Log {
var logs []*types.Log var logs []*types.Log
for _, lgs := range self.logs { for _, lgs := range db.logs {
logs = append(logs, lgs...) logs = append(logs, lgs...)
} }
return logs return logs
} }
// AddPreimage records a SHA3 preimage seen by the VM. // AddPreimage records a SHA3 preimage seen by the VM.
func (self *StateDB) AddPreimage(hash common.Hash, preimage []byte) { func (db *StateDB) AddPreimage(hash common.Hash, preimage []byte) {
if _, ok := self.preimages[hash]; !ok { if _, ok := db.preimages[hash]; !ok {
self.journal.append(addPreimageChange{hash: hash}) db.journal.append(addPreimageChange{hash: hash})
pi := make([]byte, len(preimage)) pi := make([]byte, len(preimage))
copy(pi, preimage) copy(pi, preimage)
self.preimages[hash] = pi db.preimages[hash] = pi
} }
} }
// Preimages returns a list of SHA3 preimages that have been submitted. // Preimages returns a list of SHA3 preimages that have been submitted.
func (self *StateDB) Preimages() map[common.Hash][]byte { func (db *StateDB) Preimages() map[common.Hash][]byte {
return self.preimages return db.preimages
} }
// AddRefund adds gas to the refund counter // AddRefund adds gas to the refund counter
func (self *StateDB) AddRefund(gas uint64) { func (db *StateDB) AddRefund(gas uint64) {
self.journal.append(refundChange{prev: self.refund}) db.journal.append(refundChange{prev: db.refund})
self.refund += gas db.refund += gas
} }
// SubRefund removes gas from the refund counter. // SubRefund removes gas from the refund counter.
// This method will panic if the refund counter goes below zero // This method will panic if the refund counter goes below zero
func (self *StateDB) SubRefund(gas uint64) { func (db *StateDB) SubRefund(gas uint64) {
self.journal.append(refundChange{prev: self.refund}) db.journal.append(refundChange{prev: db.refund})
if gas > self.refund { if gas > db.refund {
panic("Refund counter below zero") panic("Refund counter below zero")
} }
self.refund -= gas db.refund -= gas
} }
// Exist reports whether the given account address exists in the state. // Exist reports whether the given account address exists in the state.
// Notably this also returns true for suicided accounts. // Notably this also returns true for suicided accounts.
func (self *StateDB) Exist(addr common.Address) bool { func (db *StateDB) Exist(addr common.Address) bool {
return self.getStateObject(addr) != nil return db.getStateObject(addr) != nil
} }
// Empty returns whether the state object is either non-existent // Empty returns whether the state object is either non-existent
// or empty according to the EIP161 specification (balance = nonce = code = 0) // or empty according to the EIP161 specification (balance = nonce = code = 0)
func (self *StateDB) Empty(addr common.Address) bool { func (db *StateDB) Empty(addr common.Address) bool {
so := self.getStateObject(addr) so := db.getStateObject(addr)
return so == nil || so.empty() return so == nil || so.empty()
} }
// Retrieve the balance from the given address or 0 if object not found // Retrieve the balance from the given address or 0 if object not found
func (self *StateDB) GetBalance(addr common.Address) *big.Int { func (db *StateDB) GetBalance(addr common.Address) *big.Int {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject != nil { if stateObject != nil {
return stateObject.Balance() return stateObject.Balance()
} }
return common.Big0 return common.Big0
} }
func (self *StateDB) GetNonce(addr common.Address) uint64 { func (db *StateDB) GetNonce(addr common.Address) uint64 {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject != nil { if stateObject != nil {
return stateObject.Nonce() return stateObject.Nonce()
} }
@ -221,31 +221,31 @@ func (self *StateDB) GetNonce(addr common.Address) uint64 {
return 0 return 0
} }
func (self *StateDB) GetCode(addr common.Address) []byte { func (db *StateDB) GetCode(addr common.Address) []byte {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject != nil { if stateObject != nil {
return stateObject.Code(self.db) return stateObject.Code(db.db)
} }
return nil return nil
} }
func (self *StateDB) GetCodeSize(addr common.Address) int { func (db *StateDB) GetCodeSize(addr common.Address) int {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject == nil { if stateObject == nil {
return 0 return 0
} }
if stateObject.code != nil { if stateObject.code != nil {
return len(stateObject.code) return len(stateObject.code)
} }
size, err := self.db.ContractCodeSize(stateObject.addrHash, common.BytesToHash(stateObject.CodeHash())) size, err := db.db.ContractCodeSize(stateObject.addrHash, common.BytesToHash(stateObject.CodeHash()))
if err != nil { if err != nil {
self.setError(err) db.setError(err)
} }
return size return size
} }
func (self *StateDB) GetCodeHash(addr common.Address) common.Hash { func (db *StateDB) GetCodeHash(addr common.Address) common.Hash {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject == nil { if stateObject == nil {
return common.Hash{} return common.Hash{}
} }
@ -253,25 +253,25 @@ func (self *StateDB) GetCodeHash(addr common.Address) common.Hash {
} }
// GetState retrieves a value from the given account's storage trie. // GetState retrieves a value from the given account's storage trie.
func (self *StateDB) GetState(addr common.Address, hash common.Hash) common.Hash { func (db *StateDB) GetState(addr common.Address, hash common.Hash) common.Hash {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject != nil { if stateObject != nil {
return stateObject.GetState(self.db, hash) return stateObject.GetState(db.db, hash)
} }
return common.Hash{} return common.Hash{}
} }
// GetProof returns the MerkleProof for a given Account // GetProof returns the MerkleProof for a given Account
func (self *StateDB) GetProof(a common.Address) ([][]byte, error) { func (db *StateDB) GetProof(a common.Address) ([][]byte, error) {
var proof proofList var proof proofList
err := self.trie.Prove(crypto.Keccak256(a.Bytes()), 0, &proof) err := db.trie.Prove(crypto.Keccak256(a.Bytes()), 0, &proof)
return [][]byte(proof), err return [][]byte(proof), err
} }
// GetProof returns the StorageProof for given key // GetProof returns the StorageProof for given key
func (self *StateDB) GetStorageProof(a common.Address, key common.Hash) ([][]byte, error) { func (db *StateDB) GetStorageProof(a common.Address, key common.Hash) ([][]byte, error) {
var proof proofList var proof proofList
trie := self.StorageTrie(a) trie := db.StorageTrie(a)
if trie == nil { if trie == nil {
return proof, errors.New("storage trie for requested address does not exist") return proof, errors.New("storage trie for requested address does not exist")
} }
@ -280,32 +280,32 @@ func (self *StateDB) GetStorageProof(a common.Address, key common.Hash) ([][]byt
} }
// GetCommittedState retrieves a value from the given account's committed storage trie. // GetCommittedState retrieves a value from the given account's committed storage trie.
func (self *StateDB) GetCommittedState(addr common.Address, hash common.Hash) common.Hash { func (db *StateDB) GetCommittedState(addr common.Address, hash common.Hash) common.Hash {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject != nil { if stateObject != nil {
return stateObject.GetCommittedState(self.db, hash) return stateObject.GetCommittedState(db.db, hash)
} }
return common.Hash{} return common.Hash{}
} }
// Database retrieves the low level database supporting the lower level trie ops. // Database retrieves the low level database supporting the lower level trie ops.
func (self *StateDB) Database() Database { func (db *StateDB) Database() Database {
return self.db return db.db
} }
// StorageTrie returns the storage trie of an account. // StorageTrie returns the storage trie of an account.
// The return value is a copy and is nil for non-existent accounts. // The return value is a copy and is nil for non-existent accounts.
func (self *StateDB) StorageTrie(addr common.Address) Trie { func (db *StateDB) StorageTrie(addr common.Address) Trie {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject == nil { if stateObject == nil {
return nil return nil
} }
cpy := stateObject.deepCopy(self) cpy := stateObject.deepCopy(db)
return cpy.updateTrie(self.db) return cpy.updateTrie(db.db)
} }
func (self *StateDB) HasSuicided(addr common.Address) bool { func (db *StateDB) HasSuicided(addr common.Address) bool {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject != nil { if stateObject != nil {
return stateObject.suicided return stateObject.suicided
} }
@ -317,46 +317,46 @@ func (self *StateDB) HasSuicided(addr common.Address) bool {
*/ */
// AddBalance adds amount to the account associated with addr. // AddBalance adds amount to the account associated with addr.
func (self *StateDB) AddBalance(addr common.Address, amount *big.Int) { func (db *StateDB) AddBalance(addr common.Address, amount *big.Int) {
stateObject := self.GetOrNewStateObject(addr) stateObject := db.GetOrNewStateObject(addr)
if stateObject != nil { if stateObject != nil {
stateObject.AddBalance(amount) stateObject.AddBalance(amount)
} }
} }
// SubBalance subtracts amount from the account associated with addr. // SubBalance subtracts amount from the account associated with addr.
func (self *StateDB) SubBalance(addr common.Address, amount *big.Int) { func (db *StateDB) SubBalance(addr common.Address, amount *big.Int) {
stateObject := self.GetOrNewStateObject(addr) stateObject := db.GetOrNewStateObject(addr)
if stateObject != nil { if stateObject != nil {
stateObject.SubBalance(amount) stateObject.SubBalance(amount)
} }
} }
func (self *StateDB) SetBalance(addr common.Address, amount *big.Int) { func (db *StateDB) SetBalance(addr common.Address, amount *big.Int) {
stateObject := self.GetOrNewStateObject(addr) stateObject := db.GetOrNewStateObject(addr)
if stateObject != nil { if stateObject != nil {
stateObject.SetBalance(amount) stateObject.SetBalance(amount)
} }
} }
func (self *StateDB) SetNonce(addr common.Address, nonce uint64) { func (db *StateDB) SetNonce(addr common.Address, nonce uint64) {
stateObject := self.GetOrNewStateObject(addr) stateObject := db.GetOrNewStateObject(addr)
if stateObject != nil { if stateObject != nil {
stateObject.SetNonce(nonce) stateObject.SetNonce(nonce)
} }
} }
func (self *StateDB) SetCode(addr common.Address, code []byte) { func (db *StateDB) SetCode(addr common.Address, code []byte) {
stateObject := self.GetOrNewStateObject(addr) stateObject := db.GetOrNewStateObject(addr)
if stateObject != nil { if stateObject != nil {
stateObject.SetCode(crypto.Keccak256Hash(code), code) stateObject.SetCode(crypto.Keccak256Hash(code), code)
} }
} }
func (self *StateDB) SetState(addr common.Address, key, value common.Hash) { func (db *StateDB) SetState(addr common.Address, key, value common.Hash) {
stateObject := self.GetOrNewStateObject(addr) stateObject := db.GetOrNewStateObject(addr)
if stateObject != nil { if stateObject != nil {
stateObject.SetState(self.db, key, value) stateObject.SetState(db.db, key, value)
} }
} }
@ -365,12 +365,12 @@ func (self *StateDB) SetState(addr common.Address, key, value common.Hash) {
// //
// The account's state object is still available until the state is committed, // The account's state object is still available until the state is committed,
// getStateObject will return a non-nil account after Suicide. // getStateObject will return a non-nil account after Suicide.
func (self *StateDB) Suicide(addr common.Address) bool { func (db *StateDB) Suicide(addr common.Address) bool {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject == nil { if stateObject == nil {
return false return false
} }
self.journal.append(suicideChange{ db.journal.append(suicideChange{
account: &addr, account: &addr,
prev: stateObject.suicided, prev: stateObject.suicided,
prevbalance: new(big.Int).Set(stateObject.Balance()), prevbalance: new(big.Int).Set(stateObject.Balance()),
@ -386,26 +386,26 @@ func (self *StateDB) Suicide(addr common.Address) bool {
// //
// updateStateObject writes the given object to the trie. // updateStateObject writes the given object to the trie.
func (self *StateDB) updateStateObject(stateObject *stateObject) { func (db *StateDB) updateStateObject(stateObject *stateObject) {
addr := stateObject.Address() addr := stateObject.Address()
data, err := rlp.EncodeToBytes(stateObject) data, err := rlp.EncodeToBytes(stateObject)
if err != nil { if err != nil {
panic(fmt.Errorf("can't encode object at %x: %v", addr[:], err)) panic(fmt.Errorf("can't encode object at %x: %v", addr[:], err))
} }
self.setError(self.trie.TryUpdate(addr[:], data)) db.setError(db.trie.TryUpdate(addr[:], data))
} }
// deleteStateObject removes the given object from the state trie. // deleteStateObject removes the given object from the state trie.
func (self *StateDB) deleteStateObject(stateObject *stateObject) { func (db *StateDB) deleteStateObject(stateObject *stateObject) {
stateObject.deleted = true stateObject.deleted = true
addr := stateObject.Address() addr := stateObject.Address()
self.setError(self.trie.TryDelete(addr[:])) db.setError(db.trie.TryDelete(addr[:]))
} }
// Retrieve a state object given by the address. Returns nil if not found. // Retrieve a state object given by the address. Returns nil if not found.
func (self *StateDB) getStateObject(addr common.Address) (stateObject *stateObject) { func (db *StateDB) getStateObject(addr common.Address) (stateObject *stateObject) {
// Prefer 'live' objects. // Prefer 'live' objects.
if obj := self.stateObjects[addr]; obj != nil { if obj := db.stateObjects[addr]; obj != nil {
if obj.deleted { if obj.deleted {
return nil return nil
} }
@ -413,9 +413,9 @@ func (self *StateDB) getStateObject(addr common.Address) (stateObject *stateObje
} }
// Load the object from the database. // Load the object from the database.
enc, err := self.trie.TryGet(addr[:]) enc, err := db.trie.TryGet(addr[:])
if len(enc) == 0 { if len(enc) == 0 {
self.setError(err) db.setError(err)
return nil return nil
} }
var data Account var data Account
@ -424,36 +424,36 @@ func (self *StateDB) getStateObject(addr common.Address) (stateObject *stateObje
return nil return nil
} }
// Insert into the live set. // Insert into the live set.
obj := newObject(self, addr, data) obj := newObject(db, addr, data)
self.setStateObject(obj) db.setStateObject(obj)
return obj return obj
} }
func (self *StateDB) setStateObject(object *stateObject) { func (db *StateDB) setStateObject(object *stateObject) {
self.stateObjects[object.Address()] = object db.stateObjects[object.Address()] = object
} }
// Retrieve a state object or create a new state object if nil. // Retrieve a state object or create a new state object if nil.
func (self *StateDB) GetOrNewStateObject(addr common.Address) *stateObject { func (db *StateDB) GetOrNewStateObject(addr common.Address) *stateObject {
stateObject := self.getStateObject(addr) stateObject := db.getStateObject(addr)
if stateObject == nil || stateObject.deleted { if stateObject == nil || stateObject.deleted {
stateObject, _ = self.createObject(addr) stateObject, _ = db.createObject(addr)
} }
return stateObject return stateObject
} }
// createObject creates a new state object. If there is an existing account with // createObject creates a new state object. If there is an existing account with
// the given address, it is overwritten and returned as the second return value. // the given address, it is overwritten and returned as the second return value.
func (self *StateDB) createObject(addr common.Address) (newobj, prev *stateObject) { func (db *StateDB) createObject(addr common.Address) (newobj, prev *stateObject) {
prev = self.getStateObject(addr) prev = db.getStateObject(addr)
newobj = newObject(self, addr, Account{}) newobj = newObject(db, addr, Account{})
newobj.setNonce(0) // sets the object to dirty newobj.setNonce(0) // sets the object to dirty
if prev == nil { if prev == nil {
self.journal.append(createObjectChange{account: &addr}) db.journal.append(createObjectChange{account: &addr})
} else { } else {
self.journal.append(resetObjectChange{prev: prev}) db.journal.append(resetObjectChange{prev: prev})
} }
self.setStateObject(newobj) db.setStateObject(newobj)
return newobj, prev return newobj, prev
} }
@ -467,8 +467,8 @@ func (self *StateDB) createObject(addr common.Address) (newobj, prev *stateObjec
// 2. tx_create(sha(account ++ nonce)) (note that this gets the address of 1) // 2. tx_create(sha(account ++ nonce)) (note that this gets the address of 1)
// //
// Carrying over the balance ensures that Ether doesn't disappear. // Carrying over the balance ensures that Ether doesn't disappear.
func (self *StateDB) CreateAccount(addr common.Address) { func (db *StateDB) CreateAccount(addr common.Address) {
new, prev := self.createObject(addr) new, prev := db.createObject(addr)
if prev != nil { if prev != nil {
new.setBalance(prev.data.Balance) new.setBalance(prev.data.Balance)
} }
@ -492,26 +492,26 @@ func (db *StateDB) ForEachStorage(addr common.Address, cb func(key, value common
// Copy creates a deep, independent copy of the state. // Copy creates a deep, independent copy of the state.
// Snapshots of the copied state cannot be applied to the copy. // Snapshots of the copied state cannot be applied to the copy.
func (self *StateDB) Copy() *StateDB { func (db *StateDB) Copy() *StateDB {
// Copy all the basic fields, initialize the memory ones // Copy all the basic fields, initialize the memory ones
state := &StateDB{ state := &StateDB{
db: self.db, db: db.db,
trie: self.db.CopyTrie(self.trie), trie: db.db.CopyTrie(db.trie),
stateObjects: make(map[common.Address]*stateObject, len(self.journal.dirties)), stateObjects: make(map[common.Address]*stateObject, len(db.journal.dirties)),
stateObjectsDirty: make(map[common.Address]struct{}, len(self.journal.dirties)), stateObjectsDirty: make(map[common.Address]struct{}, len(db.journal.dirties)),
refund: self.refund, refund: db.refund,
logs: make(map[common.Hash][]*types.Log, len(self.logs)), logs: make(map[common.Hash][]*types.Log, len(db.logs)),
logSize: self.logSize, logSize: db.logSize,
preimages: make(map[common.Hash][]byte), preimages: make(map[common.Hash][]byte),
journal: newJournal(), journal: newJournal(),
} }
// Copy the dirty states, logs, and preimages // Copy the dirty states, logs, and preimages
for addr := range self.journal.dirties { for addr := range db.journal.dirties {
// As documented [here](https://github.com/ethereum/go-ethereum/pull/16485#issuecomment-380438527), // As documented [here](https://github.com/ethereum/go-ethereum/pull/16485#issuecomment-380438527),
// and in the Finalise-method, there is a case where an object is in the journal but not // and in the Finalise-method, there is a case where an object is in the journal but not
// in the stateObjects: OOG after touch on ripeMD prior to Byzantium. Thus, we need to check for // in the stateObjects: OOG after touch on ripeMD prior to Byzantium. Thus, we need to check for
// nil // nil
if object, exist := self.stateObjects[addr]; exist { if object, exist := db.stateObjects[addr]; exist {
state.stateObjects[addr] = object.deepCopy(state) state.stateObjects[addr] = object.deepCopy(state)
state.stateObjectsDirty[addr] = struct{}{} state.stateObjectsDirty[addr] = struct{}{}
} }
@ -519,13 +519,13 @@ func (self *StateDB) Copy() *StateDB {
// Above, we don't copy the actual journal. This means that if the copy is copied, the // Above, we don't copy the actual journal. This means that if the copy is copied, the
// loop above will be a no-op, since the copy's journal is empty. // loop above will be a no-op, since the copy's journal is empty.
// Thus, here we iterate over stateObjects, to enable copies of copies // Thus, here we iterate over stateObjects, to enable copies of copies
for addr := range self.stateObjectsDirty { for addr := range db.stateObjectsDirty {
if _, exist := state.stateObjects[addr]; !exist { if _, exist := state.stateObjects[addr]; !exist {
state.stateObjects[addr] = self.stateObjects[addr].deepCopy(state) state.stateObjects[addr] = db.stateObjects[addr].deepCopy(state)
state.stateObjectsDirty[addr] = struct{}{} state.stateObjectsDirty[addr] = struct{}{}
} }
} }
for hash, logs := range self.logs { for hash, logs := range db.logs {
cpy := make([]*types.Log, len(logs)) cpy := make([]*types.Log, len(logs))
for i, l := range logs { for i, l := range logs {
cpy[i] = new(types.Log) cpy[i] = new(types.Log)
@ -533,46 +533,46 @@ func (self *StateDB) Copy() *StateDB {
} }
state.logs[hash] = cpy state.logs[hash] = cpy
} }
for hash, preimage := range self.preimages { for hash, preimage := range db.preimages {
state.preimages[hash] = preimage state.preimages[hash] = preimage
} }
return state return state
} }
// Snapshot returns an identifier for the current revision of the state. // Snapshot returns an identifier for the current revision of the state.
func (self *StateDB) Snapshot() int { func (db *StateDB) Snapshot() int {
id := self.nextRevisionId id := db.nextRevisionId
self.nextRevisionId++ db.nextRevisionId++
self.validRevisions = append(self.validRevisions, revision{id, self.journal.length()}) db.validRevisions = append(db.validRevisions, revision{id, db.journal.length()})
return id return id
} }
// RevertToSnapshot reverts all state changes made since the given revision. // RevertToSnapshot reverts all state changes made since the given revision.
func (self *StateDB) RevertToSnapshot(revid int) { func (db *StateDB) RevertToSnapshot(revid int) {
// Find the snapshot in the stack of valid snapshots. // Find the snapshot in the stack of valid snapshots.
idx := sort.Search(len(self.validRevisions), func(i int) bool { idx := sort.Search(len(db.validRevisions), func(i int) bool {
return self.validRevisions[i].id >= revid return db.validRevisions[i].id >= revid
}) })
if idx == len(self.validRevisions) || self.validRevisions[idx].id != revid { if idx == len(db.validRevisions) || db.validRevisions[idx].id != revid {
panic(fmt.Errorf("revision id %v cannot be reverted", revid)) panic(fmt.Errorf("revision id %v cannot be reverted", revid))
} }
snapshot := self.validRevisions[idx].journalIndex snapshot := db.validRevisions[idx].journalIndex
// Replay the journal to undo changes and remove invalidated snapshots // Replay the journal to undo changes and remove invalidated snapshots
self.journal.revert(self, snapshot) db.journal.revert(db, snapshot)
self.validRevisions = self.validRevisions[:idx] db.validRevisions = db.validRevisions[:idx]
} }
// GetRefund returns the current value of the refund counter. // GetRefund returns the current value of the refund counter.
func (self *StateDB) GetRefund() uint64 { func (db *StateDB) GetRefund() uint64 {
return self.refund return db.refund
} }
// Finalise finalises the state by removing the self destructed objects // Finalise finalises the state by removing the db destructed objects
// and clears the journal as well as the refunds. // and clears the journal as well as the refunds.
func (s *StateDB) Finalise(deleteEmptyObjects bool) { func (db *StateDB) Finalise(deleteEmptyObjects bool) {
for addr := range s.journal.dirties { for addr := range db.journal.dirties {
stateObject, exist := s.stateObjects[addr] stateObject, exist := db.stateObjects[addr]
if !exist { if !exist {
// ripeMD is 'touched' at block 1714175, in tx 0x1237f737031e40bcde4a8b7e717b2d15e3ecadfe49bb1bbc71ee9deb09c6fcf2 // ripeMD is 'touched' at block 1714175, in tx 0x1237f737031e40bcde4a8b7e717b2d15e3ecadfe49bb1bbc71ee9deb09c6fcf2
// That tx goes out of gas, and although the notion of 'touched' does not exist there, the // That tx goes out of gas, and although the notion of 'touched' does not exist there, the
@ -584,81 +584,81 @@ func (s *StateDB) Finalise(deleteEmptyObjects bool) {
} }
if stateObject.suicided || (deleteEmptyObjects && stateObject.empty()) { if stateObject.suicided || (deleteEmptyObjects && stateObject.empty()) {
s.deleteStateObject(stateObject) db.deleteStateObject(stateObject)
} else { } else {
stateObject.updateRoot(s.db) stateObject.updateRoot(db.db)
s.updateStateObject(stateObject) db.updateStateObject(stateObject)
} }
s.stateObjectsDirty[addr] = struct{}{} db.stateObjectsDirty[addr] = struct{}{}
} }
// Invalidate journal because reverting across transactions is not allowed. // Invalidate journal because reverting across transactions is not allowed.
s.clearJournalAndRefund() db.clearJournalAndRefund()
} }
// IntermediateRoot computes the current root hash of the state trie. // IntermediateRoot computes the current root hash of the state trie.
// It is called in between transactions to get the root hash that // It is called in between transactions to get the root hash that
// goes into transaction receipts. // goes into transaction receipts.
func (s *StateDB) IntermediateRoot(deleteEmptyObjects bool) common.Hash { func (db *StateDB) IntermediateRoot(deleteEmptyObjects bool) common.Hash {
s.Finalise(deleteEmptyObjects) db.Finalise(deleteEmptyObjects)
return s.trie.Hash() return db.trie.Hash()
} }
// Prepare sets the current transaction hash and index and block hash which is // Prepare sets the current transaction hash and index and block hash which is
// used when the EVM emits new state logs. // used when the EVM emits new state logs.
func (self *StateDB) Prepare(thash, bhash common.Hash, ti int) { func (db *StateDB) Prepare(thash, bhash common.Hash, ti int) {
self.thash = thash db.thash = thash
self.bhash = bhash db.bhash = bhash
self.txIndex = ti db.txIndex = ti
} }
func (s *StateDB) clearJournalAndRefund() { func (db *StateDB) clearJournalAndRefund() {
s.journal = newJournal() db.journal = newJournal()
s.validRevisions = s.validRevisions[:0] db.validRevisions = db.validRevisions[:0]
s.refund = 0 db.refund = 0
} }
// Commit writes the state to the underlying in-memory trie database. // Commit writes the state to the underlying in-memory trie database.
func (s *StateDB) Commit(deleteEmptyObjects bool) (root common.Hash, err error) { func (db *StateDB) Commit(deleteEmptyObjects bool) (root common.Hash, err error) {
defer s.clearJournalAndRefund() defer db.clearJournalAndRefund()
for addr := range s.journal.dirties { for addr := range db.journal.dirties {
s.stateObjectsDirty[addr] = struct{}{} db.stateObjectsDirty[addr] = struct{}{}
} }
// Commit objects to the trie. // Commit objects to the trie.
for addr, stateObject := range s.stateObjects { for addr, stateObject := range db.stateObjects {
_, isDirty := s.stateObjectsDirty[addr] _, isDirty := db.stateObjectsDirty[addr]
switch { switch {
case stateObject.suicided || (isDirty && deleteEmptyObjects && stateObject.empty()): case stateObject.suicided || (isDirty && deleteEmptyObjects && stateObject.empty()):
// If the object has been removed, don't bother syncing it // If the object has been removed, don't bother syncing it
// and just mark it for deletion in the trie. // and just mark it for deletion in the trie.
s.deleteStateObject(stateObject) db.deleteStateObject(stateObject)
case isDirty: case isDirty:
// Write any contract code associated with the state object // Write any contract code associated with the state object
if stateObject.code != nil && stateObject.dirtyCode { if stateObject.code != nil && stateObject.dirtyCode {
s.db.TrieDB().InsertBlob(common.BytesToHash(stateObject.CodeHash()), stateObject.code) db.db.TrieDB().InsertBlob(common.BytesToHash(stateObject.CodeHash()), stateObject.code)
stateObject.dirtyCode = false stateObject.dirtyCode = false
} }
// Write any storage changes in the state object to its storage trie. // Write any storage changes in the state object to its storage trie.
if err := stateObject.CommitTrie(s.db); err != nil { if err := stateObject.CommitTrie(db.db); err != nil {
return common.Hash{}, err return common.Hash{}, err
} }
// Update the object in the main account trie. // Update the object in the main account trie.
s.updateStateObject(stateObject) db.updateStateObject(stateObject)
} }
delete(s.stateObjectsDirty, addr) delete(db.stateObjectsDirty, addr)
} }
// Write trie changes. // Write trie changes.
root, err = s.trie.Commit(func(leaf []byte, parent common.Hash) error { root, err = db.trie.Commit(func(leaf []byte, parent common.Hash) error {
var account Account var account Account
if err := rlp.DecodeBytes(leaf, &account); err != nil { if err := rlp.DecodeBytes(leaf, &account); err != nil {
return nil return nil
} }
if account.Root != emptyState { if account.Root != emptyState {
s.db.TrieDB().Reference(account.Root, parent) db.db.TrieDB().Reference(account.Root, parent)
} }
code := common.BytesToHash(account.CodeHash) code := common.BytesToHash(account.CodeHash)
if code != emptyCode { if code != emptyCode {
s.db.TrieDB().Reference(code, parent) db.db.TrieDB().Reference(code, parent)
} }
return nil return nil
}) })

4
core/types/transaction_signing.go
View file

@ -168,7 +168,7 @@ func (s EIP155Signer) Hash(tx *Transaction) common.Hash {
// homestead rules. // homestead rules.
type HomesteadSigner struct{ FrontierSigner } type HomesteadSigner struct{ FrontierSigner }
func (s HomesteadSigner) Equal(s2 Signer) bool { func (hs HomesteadSigner) Equal(s2 Signer) bool {
_, ok := s2.(HomesteadSigner) _, ok := s2.(HomesteadSigner)
return ok return ok
} }
@ -185,7 +185,7 @@ func (hs HomesteadSigner) Sender(tx *Transaction) (common.Address, error) {
type FrontierSigner struct{} type FrontierSigner struct{}
func (s FrontierSigner) Equal(s2 Signer) bool { func (fs FrontierSigner) Equal(s2 Signer) bool {
_, ok := s2.(FrontierSigner) _, ok := s2.(FrontierSigner)
return ok return ok
} }