gaspersic/go-ethereum
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

moved state and vm to core

Browse Source
This commit is contained in:
obscuren
2015-03-23 16:59:09 +01:00
parent d7eaa97a29
commit 0330077d76
58 changed files with 40 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

62
core/state/dump.go Normal file
View File

@ -0,0 +1,62 @@
package state
import (
"encoding/json"
"fmt"
"github.com/ethereum/go-ethereum/common"
)
type Account struct {
Balance string `json:"balance"`
Nonce uint64 `json:"nonce"`
Root string `json:"root"`
CodeHash string `json:"codeHash"`
Storage map[string]string `json:"storage"`
}
type World struct {
Root string `json:"root"`
Accounts map[string]Account `json:"accounts"`
}
func (self *StateDB) RawDump() World {
world := World{
Root: common.Bytes2Hex(self.trie.Root()),
Accounts: make(map[string]Account),
}
it := self.trie.Iterator()
for it.Next() {
stateObject := NewStateObjectFromBytes(common.BytesToAddress(it.Key), it.Value, self.db)
account := Account{Balance: stateObject.balance.String(), Nonce: stateObject.nonce, Root: common.Bytes2Hex(stateObject.Root()), CodeHash: common.Bytes2Hex(stateObject.codeHash)}
account.Storage = make(map[string]string)
storageIt := stateObject.State.trie.Iterator()
for storageIt.Next() {
fmt.Println("value", storageIt.Value)
account.Storage[common.Bytes2Hex(storageIt.Key)] = common.Bytes2Hex(storageIt.Value)
}
world.Accounts[common.Bytes2Hex(it.Key)] = account
}
return world
}
func (self *StateDB) Dump() []byte {
json, err := json.MarshalIndent(self.RawDump(), "", " ")
if err != nil {
fmt.Println("dump err", err)
}
return json
}
// Debug stuff
func (self *StateObject) CreateOutputForDiff() {
fmt.Printf("%x %x %x %x\n", self.Address(), self.State.Root(), self.balance.Bytes(), self.nonce)
it := self.State.trie.Iterator()
for it.Next() {
fmt.Printf("%x %x\n", it.Key, it.Value)
}
}

23
core/state/errors.go Normal file
View File

@ -0,0 +1,23 @@
package state
import (
"fmt"
"math/big"
)
type GasLimitErr struct {
Message string
Is, Max *big.Int
}
func IsGasLimitErr(err error) bool {
_, ok := err.(*GasLimitErr)
return ok
}
func (err *GasLimitErr) Error() string {
return err.Message
}
func GasLimitError(is, max *big.Int) *GasLimitErr {
return &GasLimitErr{Message: fmt.Sprintf("GasLimit error. Max %s, transaction would take it to %s", max, is), Is: is, Max: max}
}

99
core/state/log.go Normal file
View File

@ -0,0 +1,99 @@
package state
import (
"fmt"
"io"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/rlp"
)
type Log interface {
Address() common.Address
Topics() []common.Hash
Data() []byte
Number() uint64
}
type StateLog struct {
address common.Address
topics []common.Hash
data []byte
number uint64
}
func NewLog(address common.Address, topics []common.Hash, data []byte, number uint64) *StateLog {
return &StateLog{address, topics, data, number}
}
func (self *StateLog) Address() common.Address {
return self.address
}
func (self *StateLog) Topics() []common.Hash {
return self.topics
}
func (self *StateLog) Data() []byte {
return self.data
}
func (self *StateLog) Number() uint64 {
return self.number
}
/*
func NewLogFromValue(decoder *common.Value) *StateLog {
var extlog struct {
}
log := &StateLog{
address: decoder.Get(0).Bytes(),
data: decoder.Get(2).Bytes(),
}
it := decoder.Get(1).NewIterator()
for it.Next() {
log.topics = append(log.topics, it.Value().Bytes())
}
return log
}
*/
func (self *StateLog) EncodeRLP(w io.Writer) error {
return rlp.Encode(w, []interface{}{self.address, self.topics, self.data})
}
/*
func (self *StateLog) RlpData() interface{} {
return []interface{}{self.address, common.ByteSliceToInterface(self.topics), self.data}
}
*/
func (self *StateLog) String() string {
return fmt.Sprintf(`log: %x %x %x`, self.address, self.topics, self.data)
}
type Logs []Log
/*
func (self Logs) RlpData() interface{} {
data := make([]interface{}, len(self))
for i, log := range self {
data[i] = log.RlpData()
}
return data
}
*/
func (self Logs) String() (ret string) {
for _, log := range self {
ret += fmt.Sprintf("%v", log)
}
return "[" + ret + "]"
}

9
core/state/main_test.go Normal file
View File

@ -0,0 +1,9 @@
package state
import (
"testing"
checker "gopkg.in/check.v1"
)
func Test(t *testing.T) { checker.TestingT(t) }

89
core/state/managed_state.go Normal file
View File

@ -0,0 +1,89 @@
package state
import (
"sync"
"github.com/ethereum/go-ethereum/common"
)
type account struct {
stateObject *StateObject
nstart uint64
nonces []bool
}
type ManagedState struct {
*StateDB
mu sync.RWMutex
accounts map[string]*account
}
func ManageState(statedb *StateDB) *ManagedState {
return &ManagedState{
StateDB: statedb,
accounts: make(map[string]*account),
}
}
func (ms *ManagedState) SetState(statedb *StateDB) {
ms.mu.Lock()
defer ms.mu.Unlock()
ms.StateDB = statedb
}
func (ms *ManagedState) RemoveNonce(addr common.Address, n uint64) {
if ms.hasAccount(addr) {
ms.mu.Lock()
defer ms.mu.Unlock()
account := ms.getAccount(addr)
if n-account.nstart <= uint64(len(account.nonces)) {
reslice := make([]bool, n-account.nstart)
copy(reslice, account.nonces[:n-account.nstart])
account.nonces = reslice
}
}
}
func (ms *ManagedState) NewNonce(addr common.Address) uint64 {
ms.mu.RLock()
defer ms.mu.RUnlock()
account := ms.getAccount(addr)
for i, nonce := range account.nonces {
if !nonce {
return account.nstart + uint64(i)
}
}
account.nonces = append(account.nonces, true)
return uint64(len(account.nonces)) + account.nstart
}
func (ms *ManagedState) hasAccount(addr common.Address) bool {
_, ok := ms.accounts[addr.Str()]
return ok
}
func (ms *ManagedState) getAccount(addr common.Address) *account {
straddr := addr.Str()
if account, ok := ms.accounts[straddr]; !ok {
so := ms.GetOrNewStateObject(addr)
ms.accounts[straddr] = newAccount(so)
} else {
// Always make sure the state account nonce isn't actually higher
// than the tracked one.
so := ms.StateDB.GetStateObject(addr)
if so != nil && uint64(len(account.nonces))+account.nstart < so.nonce {
ms.accounts[straddr] = newAccount(so)
}
}
return ms.accounts[straddr]
}
func newAccount(so *StateObject) *account {
return &account{so, so.nonce - 1, nil}
}

89
core/state/managed_state_test.go Normal file
View File

@ -0,0 +1,89 @@
package state
import (
"testing"
"github.com/ethereum/go-ethereum/common"
)
var addr = common.BytesToAddress([]byte("test"))
func create() (*ManagedState, *account) {
ms := ManageState(&StateDB{stateObjects: make(map[string]*StateObject)})
so := &StateObject{address: addr, nonce: 100}
ms.StateDB.stateObjects[addr.Str()] = so
ms.accounts[addr.Str()] = newAccount(so)
return ms, ms.accounts[addr.Str()]
}
func TestNewNonce(t *testing.T) {
ms, _ := create()
nonce := ms.NewNonce(addr)
if nonce != 100 {
t.Error("expected nonce 100. got", nonce)
}
nonce = ms.NewNonce(addr)
if nonce != 101 {
t.Error("expected nonce 101. got", nonce)
}
}
func TestRemove(t *testing.T) {
ms, account := create()
nn := make([]bool, 10)
for i, _ := range nn {
nn[i] = true
}
account.nonces = append(account.nonces, nn...)
i := uint64(5)
ms.RemoveNonce(addr, account.nstart+i)
if len(account.nonces) != 5 {
t.Error("expected", i, "'th index to be false")
}
}
func TestReuse(t *testing.T) {
ms, account := create()
nn := make([]bool, 10)
for i, _ := range nn {
nn[i] = true
}
account.nonces = append(account.nonces, nn...)
i := uint64(5)
ms.RemoveNonce(addr, account.nstart+i)
nonce := ms.NewNonce(addr)
if nonce != 105 {
t.Error("expected nonce to be 105. got", nonce)
}
}
func TestRemoteNonceChange(t *testing.T) {
ms, account := create()
nn := make([]bool, 10)
for i, _ := range nn {
nn[i] = true
}
account.nonces = append(account.nonces, nn...)
nonce := ms.NewNonce(addr)
ms.StateDB.stateObjects[addr.Str()].nonce = 200
nonce = ms.NewNonce(addr)
if nonce != 200 {
t.Error("expected nonce after remote update to be", 201, "got", nonce)
}
ms.NewNonce(addr)
ms.NewNonce(addr)
ms.NewNonce(addr)
ms.StateDB.stateObjects[addr.Str()].nonce = 200
nonce = ms.NewNonce(addr)
if nonce != 204 {
t.Error("expected nonce after remote update to be", 201, "got", nonce)
}
}

357
core/state/state_object.go Normal file
View File

@ -0,0 +1,357 @@
package state
import (
"bytes"
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie"
)
type Code []byte
func (self Code) String() string {
return string(self) //strings.Join(Disassemble(self), " ")
}
type Storage map[string]*common.Value
func (self Storage) String() (str string) {
for key, value := range self {
str += fmt.Sprintf("%X : %X\n", key, value.Bytes())
}
return
}
func (self Storage) Copy() Storage {
cpy := make(Storage)
for key, value := range self {
// XXX Do we need a 'value' copy or is this sufficient?
cpy[key] = value
}
return cpy
}
type StateObject struct {
// State database for storing state changes
db common.Database
// The state object
State *StateDB
// Address belonging to this account
address common.Address
// The balance of the account
balance *big.Int
// The nonce of the account
nonce uint64
// The code hash if code is present (i.e. a contract)
codeHash []byte
// The code for this account
code Code
// Temporarily initialisation code
initCode Code
// Cached storage (flushed when updated)
storage Storage
// Temporary prepaid gas, reward after transition
prepaid *big.Int
// Total gas pool is the total amount of gas currently
// left if this object is the coinbase. Gas is directly
// purchased of the coinbase.
gasPool *big.Int
// Mark for deletion
// When an object is marked for deletion it will be delete from the trie
// during the "update" phase of the state transition
remove bool
dirty bool
}
func (self *StateObject) Reset() {
self.storage = make(Storage)
self.State.Reset()
}
func NewStateObject(address common.Address, db common.Database) *StateObject {
// This to ensure that it has 20 bytes (and not 0 bytes), thus left or right pad doesn't matter.
//address := common.ToAddress(addr)
object := &StateObject{db: db, address: address, balance: new(big.Int), gasPool: new(big.Int), dirty: true}
object.State = New(common.Hash{}, db) //New(trie.New(common.Config.Db, ""))
object.storage = make(Storage)
object.gasPool = new(big.Int)
object.prepaid = new(big.Int)
return object
}
func NewStateObjectFromBytes(address common.Address, data []byte, db common.Database) *StateObject {
// TODO clean me up
var extobject struct {
Nonce uint64
Balance *big.Int
Root common.Hash
CodeHash []byte
}
err := rlp.Decode(bytes.NewReader(data), &extobject)
if err != nil {
fmt.Println(err)
return nil
}
object := &StateObject{address: address, db: db}
//object.RlpDecode(data)
object.nonce = extobject.Nonce
object.balance = extobject.Balance
object.codeHash = extobject.CodeHash
object.State = New(extobject.Root, db)
object.storage = make(map[string]*common.Value)
object.gasPool = new(big.Int)
object.prepaid = new(big.Int)
object.code, _ = db.Get(extobject.CodeHash)
return object
}
func (self *StateObject) MarkForDeletion() {
self.remove = true
self.dirty = true
statelogger.Debugf("%x: #%d %v X\n", self.Address(), self.nonce, self.balance)
}
func (c *StateObject) getAddr(addr common.Hash) *common.Value {
return common.NewValueFromBytes([]byte(c.State.trie.Get(addr[:])))
}
func (c *StateObject) setAddr(addr []byte, value interface{}) {
c.State.trie.Update(addr, common.Encode(value))
}
func (self *StateObject) GetStorage(key *big.Int) *common.Value {
return self.GetState(common.BytesToHash(key.Bytes()))
}
func (self *StateObject) SetStorage(key *big.Int, value *common.Value) {
self.SetState(common.BytesToHash(key.Bytes()), value)
}
func (self *StateObject) Storage() Storage {
return self.storage
}
func (self *StateObject) GetState(key common.Hash) *common.Value {
strkey := key.Str()
value := self.storage[strkey]
if value == nil {
value = self.getAddr(key)
if !value.IsNil() {
self.storage[strkey] = value
}
}
return value
}
func (self *StateObject) SetState(k common.Hash, value *common.Value) {
self.storage[k.Str()] = value.Copy()
self.dirty = true
}
func (self *StateObject) Sync() {
for key, value := range self.storage {
if value.Len() == 0 {
self.State.trie.Delete([]byte(key))
continue
}
self.setAddr([]byte(key), value)
}
self.storage = make(Storage)
}
func (c *StateObject) GetInstr(pc *big.Int) *common.Value {
if int64(len(c.code)-1) < pc.Int64() {
return common.NewValue(0)
}
return common.NewValueFromBytes([]byte{c.code[pc.Int64()]})
}
func (c *StateObject) AddBalance(amount *big.Int) {
c.SetBalance(new(big.Int).Add(c.balance, amount))
statelogger.Debugf("%x: #%d %v (+ %v)\n", c.Address(), c.nonce, c.balance, amount)
}
func (c *StateObject) SubBalance(amount *big.Int) {
c.SetBalance(new(big.Int).Sub(c.balance, amount))
statelogger.Debugf("%x: #%d %v (- %v)\n", c.Address(), c.nonce, c.balance, amount)
}
func (c *StateObject) SetBalance(amount *big.Int) {
c.balance = amount
c.dirty = true
}
func (c *StateObject) St() Storage {
return c.storage
}
//
// Gas setters and getters
//
// Return the gas back to the origin. Used by the Virtual machine or Closures
func (c *StateObject) ReturnGas(gas, price *big.Int) {}
func (c *StateObject) ConvertGas(gas, price *big.Int) error {
total := new(big.Int).Mul(gas, price)
if total.Cmp(c.balance) > 0 {
return fmt.Errorf("insufficient amount: %v, %v", c.balance, total)
}
c.SubBalance(total)
c.dirty = true
return nil
}
func (self *StateObject) SetGasPool(gasLimit *big.Int) {
self.gasPool = new(big.Int).Set(gasLimit)
statelogger.Debugf("%x: gas (+ %v)", self.Address(), self.gasPool)
}
func (self *StateObject) BuyGas(gas, price *big.Int) error {
if self.gasPool.Cmp(gas) < 0 {
return GasLimitError(self.gasPool, gas)
}
self.gasPool.Sub(self.gasPool, gas)
rGas := new(big.Int).Set(gas)
rGas.Mul(rGas, price)
self.dirty = true
return nil
}
func (self *StateObject) RefundGas(gas, price *big.Int) {
self.gasPool.Add(self.gasPool, gas)
}
func (self *StateObject) Copy() *StateObject {
stateObject := NewStateObject(self.Address(), self.db)
stateObject.balance.Set(self.balance)
stateObject.codeHash = common.CopyBytes(self.codeHash)
stateObject.nonce = self.nonce
if self.State != nil {
stateObject.State = self.State.Copy()
}
stateObject.code = common.CopyBytes(self.code)
stateObject.initCode = common.CopyBytes(self.initCode)
stateObject.storage = self.storage.Copy()
stateObject.gasPool.Set(self.gasPool)
stateObject.remove = self.remove
stateObject.dirty = self.dirty
return stateObject
}
func (self *StateObject) Set(stateObject *StateObject) {
*self = *stateObject
}
//
// Attribute accessors
//
func (self *StateObject) Balance() *big.Int {
return self.balance
}
func (c *StateObject) N() *big.Int {
return big.NewInt(int64(c.nonce))
}
// Returns the address of the contract/account
func (c *StateObject) Address() common.Address {
return c.address
}
// Returns the initialization Code
func (c *StateObject) Init() Code {
return c.initCode
}
func (self *StateObject) Trie() *trie.SecureTrie {
return self.State.trie
}
func (self *StateObject) Root() []byte {
return self.Trie().Root()
}
func (self *StateObject) Code() []byte {
return self.code
}
func (self *StateObject) SetCode(code []byte) {
self.code = code
self.dirty = true
}
func (self *StateObject) SetInitCode(code []byte) {
self.initCode = code
self.dirty = true
}
func (self *StateObject) SetNonce(nonce uint64) {
self.nonce = nonce
self.dirty = true
}
func (self *StateObject) Nonce() uint64 {
return self.nonce
}
//
// Encoding
//
// State object encoding methods
func (c *StateObject) RlpEncode() []byte {
return common.Encode([]interface{}{c.nonce, c.balance, c.Root(), c.CodeHash()})
}
func (c *StateObject) CodeHash() common.Bytes {
return crypto.Sha3(c.code)
}
func (c *StateObject) RlpDecode(data []byte) {
decoder := common.NewValueFromBytes(data)
c.nonce = decoder.Get(0).Uint()
c.balance = decoder.Get(1).BigInt()
c.State = New(common.BytesToHash(decoder.Get(2).Bytes()), c.db) //New(trie.New(common.Config.Db, decoder.Get(2).Interface()))
c.storage = make(map[string]*common.Value)
c.gasPool = new(big.Int)
c.codeHash = decoder.Get(3).Bytes()
c.code, _ = c.db.Get(c.codeHash)
}
// Storage change object. Used by the manifest for notifying changes to
// the sub channels.
type StorageState struct {
StateAddress []byte
Address []byte
Value *big.Int
}

106
core/state/state_test.go Normal file
View File

@ -0,0 +1,106 @@
package state
import (
"math/big"
"testing"
checker "gopkg.in/check.v1"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethdb"
)
type StateSuite struct {
state *StateDB
}
var _ = checker.Suite(&StateSuite{})
var toAddr = common.BytesToAddress
func (s *StateSuite) TestDump(c *checker.C) {
return
// generate a few entries
obj1 := s.state.GetOrNewStateObject(toAddr([]byte{0x01}))
obj1.AddBalance(big.NewInt(22))
obj2 := s.state.GetOrNewStateObject(toAddr([]byte{0x01, 0x02}))
obj2.SetCode([]byte{3, 3, 3, 3, 3, 3, 3})
obj3 := s.state.GetOrNewStateObject(toAddr([]byte{0x02}))
obj3.SetBalance(big.NewInt(44))
// write some of them to the trie
s.state.UpdateStateObject(obj1)
s.state.UpdateStateObject(obj2)
// check that dump contains the state objects that are in trie
got := string(s.state.Dump())
want := `{
"root": "6e277ae8357d013e50f74eedb66a991f6922f93ae03714de58b3d0c5e9eee53f",
"accounts": {
"1468288056310c82aa4c01a7e12a10f8111a0560e72b700555479031b86c357d": {
"balance": "22",
"nonce": 0,
"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
"codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
"storage": {}
},
"a17eacbc25cda025e81db9c5c62868822c73ce097cee2a63e33a2e41268358a1": {
"balance": "0",
"nonce": 0,
"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
"codeHash": "87874902497a5bb968da31a2998d8f22e949d1ef6214bcdedd8bae24cca4b9e3",
"storage": {}
}
}
}`
if got != want {
c.Errorf("dump mismatch:\ngot: %s\nwant: %s\n", got, want)
}
}
func (s *StateSuite) SetUpTest(c *checker.C) {
db, _ := ethdb.NewMemDatabase()
s.state = New(common.Hash{}, db)
}
func TestNull(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
state := New(common.Hash{}, db)
address := common.HexToAddress("0x823140710bf13990e4500136726d8b55")
state.NewStateObject(address)
//value := common.FromHex("0x823140710bf13990e4500136726d8b55")
value := make([]byte, 16)
state.SetState(address, common.Hash{}, value)
state.Update(nil)
state.Sync()
value = state.GetState(address, common.Hash{})
}
func (s *StateSuite) TestSnapshot(c *checker.C) {
stateobjaddr := toAddr([]byte("aa"))
storageaddr := common.Big("0")
data1 := common.NewValue(42)
data2 := common.NewValue(43)
// get state object
stateObject := s.state.GetOrNewStateObject(stateobjaddr)
// set inital state object value
stateObject.SetStorage(storageaddr, data1)
// get snapshot of current state
snapshot := s.state.Copy()
// get state object. is this strictly necessary?
stateObject = s.state.GetStateObject(stateobjaddr)
// set new state object value
stateObject.SetStorage(storageaddr, data2)
// restore snapshot
s.state.Set(snapshot)
// get state object
stateObject = s.state.GetStateObject(stateobjaddr)
// get state storage value
res := stateObject.GetStorage(storageaddr)
c.Assert(data1, checker.DeepEquals, res)
}

325
core/state/statedb.go Normal file
View File

@ -0,0 +1,325 @@
package state
import (
"bytes"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/trie"
)
var statelogger = logger.NewLogger("STATE")
// StateDBs within the ethereum protocol are used to store anything
// within the merkle trie. StateDBs take care of caching and storing
// nested states. It's the general query interface to retrieve:
// * Contracts
// * Accounts
type StateDB struct {
db common.Database
trie *trie.SecureTrie
stateObjects map[string]*StateObject
refund map[string]*big.Int
logs Logs
}
// Create a new state from a given trie
func New(root common.Hash, db common.Database) *StateDB {
trie := trie.NewSecure(root[:], db)
return &StateDB{db: db, trie: trie, stateObjects: make(map[string]*StateObject), refund: make(map[string]*big.Int)}
}
func (self *StateDB) PrintRoot() {
self.trie.Trie.PrintRoot()
}
func (self *StateDB) EmptyLogs() {
self.logs = nil
}
func (self *StateDB) AddLog(log Log) {
self.logs = append(self.logs, log)
}
func (self *StateDB) Logs() Logs {
return self.logs
}
func (self *StateDB) Refund(address common.Address, gas *big.Int) {
addr := address.Str()
if self.refund[addr] == nil {
self.refund[addr] = new(big.Int)
}
self.refund[addr].Add(self.refund[addr], gas)
}
// Retrieve the balance from the given address or 0 if object not found
func (self *StateDB) GetBalance(addr common.Address) *big.Int {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
return stateObject.balance
}
return common.Big0
}
func (self *StateDB) AddBalance(addr common.Address, amount *big.Int) {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
stateObject.AddBalance(amount)
}
}
func (self *StateDB) GetNonce(addr common.Address) uint64 {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
return stateObject.nonce
}
return 0
}
func (self *StateDB) GetCode(addr common.Address) []byte {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
return stateObject.code
}
return nil
}
func (self *StateDB) GetState(a common.Address, b common.Hash) []byte {
stateObject := self.GetStateObject(a)
if stateObject != nil {
return stateObject.GetState(b).Bytes()
}
return nil
}
func (self *StateDB) SetNonce(addr common.Address, nonce uint64) {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
stateObject.SetNonce(nonce)
}
}
func (self *StateDB) SetCode(addr common.Address, code []byte) {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
stateObject.SetCode(code)
}
}
func (self *StateDB) SetState(addr common.Address, key common.Hash, value interface{}) {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
stateObject.SetState(key, common.NewValue(value))
}
}
func (self *StateDB) Delete(addr common.Address) bool {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
stateObject.MarkForDeletion()
stateObject.balance = new(big.Int)
return true
}
return false
}
func (self *StateDB) IsDeleted(addr common.Address) bool {
stateObject := self.GetStateObject(addr)
if stateObject != nil {
return stateObject.remove
}
return false
}
//
// Setting, updating & deleting state object methods
//
// Update the given state object and apply it to state trie
func (self *StateDB) UpdateStateObject(stateObject *StateObject) {
//addr := stateObject.Address()
if len(stateObject.CodeHash()) > 0 {
self.db.Put(stateObject.CodeHash(), stateObject.code)
}
addr := stateObject.Address()
self.trie.Update(addr[:], stateObject.RlpEncode())
}
// Delete the given state object and delete it from the state trie
func (self *StateDB) DeleteStateObject(stateObject *StateObject) {
addr := stateObject.Address()
self.trie.Delete(addr[:])
delete(self.stateObjects, addr.Str())
}
// Retrieve a state object given my the address. Nil if not found
func (self *StateDB) GetStateObject(addr common.Address) *StateObject {
//addr = common.Address(addr)
stateObject := self.stateObjects[addr.Str()]
if stateObject != nil {
return stateObject
}
data := self.trie.Get(addr[:])
if len(data) == 0 {
return nil
}
stateObject = NewStateObjectFromBytes(addr, []byte(data), self.db)
self.SetStateObject(stateObject)
return stateObject
}
func (self *StateDB) SetStateObject(object *StateObject) {
self.stateObjects[object.Address().Str()] = object
}
// Retrieve a state object or create a new state object if nil
func (self *StateDB) GetOrNewStateObject(addr common.Address) *StateObject {
stateObject := self.GetStateObject(addr)
if stateObject == nil {
stateObject = self.NewStateObject(addr)
}
return stateObject
}
// Create a state object whether it exist in the trie or not
func (self *StateDB) NewStateObject(addr common.Address) *StateObject {
//addr = common.Address(addr)
statelogger.Debugf("(+) %x\n", addr)
stateObject := NewStateObject(addr, self.db)
self.stateObjects[addr.Str()] = stateObject
return stateObject
}
// Deprecated
func (self *StateDB) GetAccount(addr common.Address) *StateObject {
return self.GetOrNewStateObject(addr)
}
//
// Setting, copying of the state methods
//
func (s *StateDB) Cmp(other *StateDB) bool {
return bytes.Equal(s.trie.Root(), other.trie.Root())
}
func (self *StateDB) Copy() *StateDB {
state := New(common.Hash{}, self.db)
state.trie = self.trie.Copy()
for k, stateObject := range self.stateObjects {
state.stateObjects[k] = stateObject.Copy()
}
for addr, refund := range self.refund {
state.refund[addr] = new(big.Int).Set(refund)
}
logs := make(Logs, len(self.logs))
copy(logs, self.logs)
state.logs = logs
return state
}
func (self *StateDB) Set(state *StateDB) {
self.trie = state.trie
self.stateObjects = state.stateObjects
self.refund = state.refund
self.logs = state.logs
}
func (s *StateDB) Root() common.Hash {
return common.BytesToHash(s.trie.Root())
}
func (s *StateDB) Trie() *trie.SecureTrie {
return s.trie
}
// Resets the trie and all siblings
func (s *StateDB) Reset() {
s.trie.Reset()
// Reset all nested states
for _, stateObject := range s.stateObjects {
if stateObject.State == nil {
continue
}
stateObject.Reset()
}
s.Empty()
}
// Syncs the trie and all siblings
func (s *StateDB) Sync() {
// Sync all nested states
for _, stateObject := range s.stateObjects {
if stateObject.State == nil {
continue
}
stateObject.State.Sync()
}
s.trie.Commit()
s.Empty()
}
func (self *StateDB) Empty() {
self.stateObjects = make(map[string]*StateObject)
self.refund = make(map[string]*big.Int)
}
func (self *StateDB) Refunds() map[string]*big.Int {
return self.refund
}
func (self *StateDB) Update(gasUsed *big.Int) {
self.refund = make(map[string]*big.Int)
for _, stateObject := range self.stateObjects {
if stateObject.dirty {
if stateObject.remove {
self.DeleteStateObject(stateObject)
} else {
stateObject.Sync()
self.UpdateStateObject(stateObject)
}
stateObject.dirty = false
}
}
}
// Debug stuff
func (self *StateDB) CreateOutputForDiff() {
for _, stateObject := range self.stateObjects {
stateObject.CreateOutputForDiff()
}
}