func (c *StateObject) getTrie(db trie.Database) *trie.SecureTrie {
if c.trie == nil {
var err error
c.trie, err = trie.NewSecure(c.data.Root, db)
if err != nil {
c.trie, _ = trie.NewSecure(common.Hash{}, db)
c.setError(fmt.Errorf("can't create storage trie: %v", err))
}
}
return c.trie
}
func NewStateObjectFromBytes(address common.Address, data []byte, db ethdb.Database) *StateObject {
var extobject struct {
Nonce uint64
Balance *big.Int
Root common.Hash
CodeHash []byte
}
err := rlp.Decode(bytes.NewReader(data), &extobject)
if err != nil {
glog.Errorf("can't decode state object %x: %v", address, err)
return nil
}
trie, err := trie.NewSecure(extobject.Root, db)
if err != nil {
// TODO: bubble this up or panic
glog.Errorf("can't create account trie with root %x: %v", extobject.Root[:], err)
return nil
}
object := &StateObject{address: address, db: db}
object.nonce = extobject.Nonce
object.balance = extobject.Balance
object.codeHash = extobject.CodeHash
object.trie = trie
object.storage = make(map[string]common.Hash)
object.code, _ = db.Get(extobject.CodeHash)
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.nonce = extobject.Nonce
object.balance = extobject.Balance
object.codeHash = extobject.CodeHash
object.trie = trie.NewSecure(extobject.Root[:], db)
object.storage = make(map[string]common.Hash)
object.gasPool = new(big.Int)
object.code, _ = db.Get(extobject.CodeHash)
return object
}
func NewStateObject(address common.Address, db common.Database) *StateObject {
object := &StateObject{db: db, address: address, balance: new(big.Int), gasPool: new(big.Int), dirty: true}
object.trie = trie.NewSecure((common.Hash{}).Bytes(), db)
object.storage = make(Storage)
object.gasPool = new(big.Int)
return object
}
// openTrie creates a trie. It uses an existing trie if one is available
// from the journal if available.
func (self *StateDB) openTrie(root common.Hash) (*trie.SecureTrie, error) {
for i := len(self.pastTries) - 1; i >= 0; i-- {
if self.pastTries[i].Hash() == root {
tr := *self.pastTries[i]
return &tr, nil
}
}
return trie.NewSecure(root, self.db)
}
// Update associates key with value in the trie. Subsequent calls to
// Get will return value. If value has length zero, any existing value
// is deleted from the trie and calls to Get will return nil.
//
// The value bytes must not be modified by the caller while they are
// stored in the trie.
func (t *LightTrie) Update(ctx context.Context, key, value []byte) (err error) {
err = t.do(ctx, key, func() (err error) {
if t.trie == nil {
t.trie, err = trie.NewSecure(t.originalRoot, t.db)
}
if err == nil {
err = t.trie.TryUpdate(key, value)
}
return
})
return
}
// Get returns the value for key stored in the trie.
// The value bytes must not be modified by the caller.
func (t *LightTrie) Get(ctx context.Context, key []byte) (res []byte, err error) {
err = t.do(ctx, key, func() (err error) {
if t.trie == nil {
t.trie, err = trie.NewSecure(t.originalRoot, t.db)
}
if err == nil {
res, err = t.trie.TryGet(key)
}
return
})
return
}
func (c *StateObject) RlpDecode(data []byte) {
decoder := common.NewValueFromBytes(data)
c.nonce = decoder.Get(0).Uint()
c.balance = decoder.Get(1).BigInt()
c.trie = trie.NewSecure(decoder.Get(2).Bytes(), c.db)
c.storage = make(map[string]common.Hash)
c.gasPool = new(big.Int)
c.codeHash = decoder.Get(3).Bytes()
c.code, _ = c.db.Get(c.codeHash)
}
// Create a new state from a given trie
func New(root common.Hash, db ethdb.Database) (*StateDB, error) {
tr, err := trie.NewSecure(root, db)
if err != nil {
return nil, err
}
return &StateDB{
db: db,
trie: tr,
stateObjects: make(map[string]*StateObject),
refund: new(big.Int),
logs: make(map[common.Hash]vm.Logs),
}, nil
}
// Create a new state from a given trie
func New(root common.Hash, db ethdb.Database) (*StateDB, error) {
tr, err := trie.NewSecure(root, db)
if err != nil {
return nil, err
}
csc, _ := lru.New(codeSizeCacheSize)
return &StateDB{
db: db,
trie: tr,
codeSizeCache: csc,
stateObjects: make(map[common.Address]*StateObject),
stateObjectsDirty: make(map[common.Address]struct{}),
refund: new(big.Int),
logs: make(map[common.Hash]vm.Logs),
}, nil
}
// SyncObjects syncs the changed objects to the trie
func (self *StateDB) SyncObjects() {
self.trie = trie.NewSecure(self.root[:], self.db)
self.refund = new(big.Int)
for _, stateObject := range self.stateObjects {
if stateObject.remove {
self.DeleteStateObject(stateObject)
} else {
stateObject.Update()
self.UpdateStateObject(stateObject)
}
stateObject.dirty = false
}
}
// FastSyncCommitHead sets the current head block to the one defined by the hash
// irrelevant what the chain contents were prior.
func (self *BlockChain) FastSyncCommitHead(hash common.Hash) error {
// Make sure that both the block as well at its state trie exists
block := self.GetBlock(hash)
if block == nil {
return fmt.Errorf("non existent block [%x…]", hash[:4])
}
if _, err := trie.NewSecure(block.Root(), self.chainDb); err != nil {
return err
}
// If all checks out, manually set the head block
self.mu.Lock()
self.currentBlock = block
self.mu.Unlock()
glog.V(logger.Info).Infof("committed block #%d [%x…] as new head", block.Number(), hash[:4])
return nil
}
// Create a new state from a given trie
func New(root common.Hash, db common.Database) *StateDB {
trie := trie.NewSecure(root[:], db)
return &StateDB{root: root, db: db, trie: trie, stateObjects: make(map[string]*StateObject), refund: new(big.Int), logs: make(map[common.Hash]Logs)}
}
func NewStateObject(address common.Address, db ethdb.Database) *StateObject {
object := &StateObject{db: db, address: address, balance: new(big.Int), dirty: true}
object.trie, _ = trie.NewSecure(common.Hash{}, db)
object.storage = make(Storage)
return object
}