diff options
| -rw-r--r-- | ethchain/deprecated.go | 11 | ||||
| -rw-r--r-- | ethchain/state_manager.go | 202 |
2 files changed, 13 insertions, 200 deletions
diff --git a/ethchain/deprecated.go b/ethchain/deprecated.go index ed2697e2a..0985fa25d 100644 --- a/ethchain/deprecated.go +++ b/ethchain/deprecated.go @@ -7,6 +7,17 @@ import ( "math/big" ) +func (sm *StateManager) MakeStateObject(state *State, tx *Transaction) *StateObject { + contract := MakeContract(tx, state) + if contract != nil { + state.states[string(tx.CreationAddress())] = contract.state + + return contract + } + + return nil +} + func (sm *StateManager) EvalScript(state *State, script []byte, object *StateObject, tx *Transaction, block *Block) (ret []byte, gas *big.Int, err error) { account := state.GetAccount(tx.Sender()) diff --git a/ethchain/state_manager.go b/ethchain/state_manager.go index f44afecac..576afa8d3 100644 --- a/ethchain/state_manager.go +++ b/ethchain/state_manager.go @@ -97,182 +97,6 @@ func (sm *StateManager) BlockChain() *BlockChain { return sm.bc } -func (sm *StateManager) MakeStateObject(state *State, tx *Transaction) *StateObject { - contract := MakeContract(tx, state) - if contract != nil { - state.states[string(tx.CreationAddress())] = contract.state - - return contract - } - - return nil -} - -type StateTransition struct { - coinbase []byte - tx *Transaction - gas *big.Int - state *State - block *Block - - cb, rec, sen *StateObject -} - -func NewStateTransition(coinbase []byte, gas *big.Int, tx *Transaction, state *State, block *Block) *StateTransition { - return &StateTransition{coinbase, tx, new(big.Int), state, block, nil, nil, nil} -} - -func (self *StateTransition) Coinbase() *StateObject { - if self.cb != nil { - return self.cb - } - - self.cb = self.state.GetAccount(self.coinbase) - return self.cb -} -func (self *StateTransition) Sender() *StateObject { - if self.sen != nil { - return self.sen - } - - self.sen = self.state.GetAccount(self.tx.Sender()) - return self.sen -} -func (self *StateTransition) Receiver() *StateObject { - if self.tx.CreatesContract() { - return nil - } - - if self.rec != nil { - return self.rec - } - - self.rec = self.state.GetAccount(self.tx.Recipient) - return self.rec -} - -func (self *StateTransition) UseGas(amount *big.Int) error { - if self.gas.Cmp(amount) < 0 { - return OutOfGasError() - } - self.gas.Sub(self.gas, amount) - - return nil -} - -func (self *StateTransition) AddGas(amount *big.Int) { - self.gas.Add(self.gas, amount) -} - -func (self *StateTransition) BuyGas() error { - var err error - - sender := self.Sender() - if sender.Amount.Cmp(self.tx.GasValue()) < 0 { - return fmt.Errorf("Insufficient funds to pre-pay gas. Req %v, has %v", self.tx.GasValue(), self.tx.Value) - } - - coinbase := self.Coinbase() - err = coinbase.BuyGas(self.tx.Gas, self.tx.GasPrice) - if err != nil { - return err - } - self.state.UpdateStateObject(coinbase) - - self.AddGas(self.tx.Gas) - sender.SubAmount(self.tx.GasValue()) - - return nil -} - -func (self *StateManager) TransitionState(st *StateTransition) (err error) { - //snapshot := st.state.Snapshot() - - defer func() { - if r := recover(); r != nil { - ethutil.Config.Log.Infoln(r) - err = fmt.Errorf("%v", r) - } - }() - - var ( - tx = st.tx - sender = st.Sender() - receiver *StateObject - ) - - if sender.Nonce != tx.Nonce { - return NonceError(tx.Nonce, sender.Nonce) - } - - sender.Nonce += 1 - defer func() { - // Notify all subscribers - self.Ethereum.Reactor().Post("newTx:post", tx) - }() - - if err = st.BuyGas(); err != nil { - return err - } - - receiver = st.Receiver() - - if err = st.UseGas(GasTx); err != nil { - return err - } - - dataPrice := big.NewInt(int64(len(tx.Data))) - dataPrice.Mul(dataPrice, GasData) - if err = st.UseGas(dataPrice); err != nil { - return err - } - - if receiver == nil { // Contract - receiver = self.MakeStateObject(st.state, tx) - if receiver == nil { - return fmt.Errorf("ERR. Unable to create contract with transaction %v", tx) - } - } - - if err = self.transferValue(st, sender, receiver); err != nil { - return err - } - - if tx.CreatesContract() { - fmt.Println(Disassemble(receiver.Init())) - // Evaluate the initialization script - // and use the return value as the - // script section for the state object. - //script, gas, err = sm.Eval(state, contract.Init(), contract, tx, block) - code, err := self.Eval(st, receiver.Init(), receiver) - if err != nil { - return fmt.Errorf("Error during init script run %v", err) - } - - receiver.script = code - } - - st.state.UpdateStateObject(sender) - st.state.UpdateStateObject(receiver) - - return nil -} - -func (self *StateManager) transferValue(st *StateTransition, sender, receiver *StateObject) error { - if sender.Amount.Cmp(st.tx.Value) < 0 { - return fmt.Errorf("Insufficient funds to transfer value. Req %v, has %v", st.tx.Value, sender.Amount) - } - - // Subtract the amount from the senders account - sender.SubAmount(st.tx.Value) - // Add the amount to receivers account which should conclude this transaction - receiver.AddAmount(st.tx.Value) - - ethutil.Config.Log.Debugf("%x => %x (%v) %x\n", sender.Address()[:4], receiver.Address()[:4], st.tx.Value, st.tx.Hash()) - - return nil -} - func (self *StateManager) ProcessTransactions(coinbase []byte, state *State, block, parent *Block, txs Transactions) (Receipts, Transactions, Transactions, error) { var ( receipts Receipts @@ -284,8 +108,8 @@ func (self *StateManager) ProcessTransactions(coinbase []byte, state *State, blo done: for i, tx := range txs { txGas := new(big.Int).Set(tx.Gas) - st := NewStateTransition(coinbase, tx.Gas, tx, state, block) - err = self.TransitionState(st) + st := NewStateTransition(coinbase, tx, state, block) + err = st.TransitionState() if err != nil { switch { case IsNonceErr(err): @@ -315,28 +139,6 @@ done: return receipts, handled, unhandled, err } -func (self *StateManager) Eval(st *StateTransition, script []byte, context *StateObject) (ret []byte, err error) { - var ( - tx = st.tx - block = st.block - initiator = st.Sender() - ) - - closure := NewClosure(initiator, context, script, st.state, st.gas, tx.GasPrice) - vm := NewVm(st.state, self, RuntimeVars{ - Origin: initiator.Address(), - BlockNumber: block.BlockInfo().Number, - PrevHash: block.PrevHash, - Coinbase: block.Coinbase, - Time: block.Time, - Diff: block.Difficulty, - Value: tx.Value, - }) - ret, _, err = closure.Call(vm, tx.Data, nil) - - return -} - func (sm *StateManager) Process(block *Block, dontReact bool) error { if !sm.bc.HasBlock(block.PrevHash) { return ParentError(block.PrevHash) |