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

Refactored to new state and vm

Browse Source
This commit is contained in:
obscuren
2014-07-24 12:04:15 +02:00
parent 958b482ada
commit 32d125131f
20 changed files with 196 additions and 2025 deletions
Download Patch File Download Diff File Expand all files Collapse all files

95
ethchain/state_transition.go
View File

@ -2,6 +2,10 @@ package ethchain
import (
"fmt"
"github.com/ethereum/eth-go/ethstate"
"github.com/ethereum/eth-go/ethtrie"
"github.com/ethereum/eth-go/ethutil"
"github.com/ethereum/eth-go/ethvm"
"math/big"
)
@ -27,17 +31,17 @@ type StateTransition struct {
gas, gasPrice *big.Int
value *big.Int
data []byte
state *State
state *ethstate.State
block *Block
cb, rec, sen *StateObject
cb, rec, sen *ethstate.StateObject
}
func NewStateTransition(coinbase *StateObject, tx *Transaction, state *State, block *Block) *StateTransition {
func NewStateTransition(coinbase *ethstate.StateObject, tx *Transaction, state *ethstate.State, block *Block) *StateTransition {
return &StateTransition{coinbase.Address(), tx.Recipient, tx, new(big.Int), new(big.Int).Set(tx.GasPrice), tx.Value, tx.Data, state, block, coinbase, nil, nil}
}
func (self *StateTransition) Coinbase() *StateObject {
func (self *StateTransition) Coinbase() *ethstate.StateObject {
if self.cb != nil {
return self.cb
}
@ -45,7 +49,7 @@ func (self *StateTransition) Coinbase() *StateObject {
self.cb = self.state.GetOrNewStateObject(self.coinbase)
return self.cb
}
func (self *StateTransition) Sender() *StateObject {
func (self *StateTransition) Sender() *ethstate.StateObject {
if self.sen != nil {
return self.sen
}
@ -54,7 +58,7 @@ func (self *StateTransition) Sender() *StateObject {
return self.sen
}
func (self *StateTransition) Receiver() *StateObject {
func (self *StateTransition) Receiver() *ethstate.StateObject {
if self.tx != nil && self.tx.CreatesContract() {
return nil
}
@ -67,7 +71,7 @@ func (self *StateTransition) Receiver() *StateObject {
return self.rec
}
func (self *StateTransition) MakeStateObject(state *State, tx *Transaction) *StateObject {
func (self *StateTransition) MakeStateObject(state *ethstate.State, tx *Transaction) *ethstate.StateObject {
contract := MakeContract(tx, state)
return contract
@ -154,7 +158,7 @@ func (self *StateTransition) TransitionState() (err error) {
var (
tx = self.tx
sender = self.Sender()
receiver *StateObject
receiver *ethstate.StateObject
)
defer self.RefundGas()
@ -163,13 +167,13 @@ func (self *StateTransition) TransitionState() (err error) {
sender.Nonce += 1
// Transaction gas
if err = self.UseGas(GasTx); err != nil {
if err = self.UseGas(ethvm.GasTx); err != nil {
return
}
// Pay data gas
dataPrice := big.NewInt(int64(len(self.data)))
dataPrice.Mul(dataPrice, GasData)
dataPrice.Mul(dataPrice, ethvm.GasData)
if err = self.UseGas(dataPrice); err != nil {
return
}
@ -178,7 +182,7 @@ func (self *StateTransition) TransitionState() (err error) {
return fmt.Errorf("Insufficient funds to transfer value. Req %v, has %v", self.value, sender.Amount)
}
var snapshot *State
var snapshot *ethstate.State
// If the receiver is nil it's a contract (\0*32).
if tx.CreatesContract() {
// Subtract the (irreversible) amount from the senders account
@ -220,10 +224,10 @@ func (self *StateTransition) TransitionState() (err error) {
return fmt.Errorf("Error during init execution %v", err)
}
receiver.script = code
receiver.Code = code
} else {
if len(receiver.Script()) > 0 {
_, err = self.Eval(receiver.Script(), receiver, "code")
if len(receiver.Code) > 0 {
_, err = self.Eval(receiver.Code, receiver, "code")
if err != nil {
self.state.Set(snapshot)
@ -235,7 +239,7 @@ func (self *StateTransition) TransitionState() (err error) {
return
}
func (self *StateTransition) transferValue(sender, receiver *StateObject) error {
func (self *StateTransition) transferValue(sender, receiver *ethstate.StateObject) error {
if sender.Amount.Cmp(self.value) < 0 {
return fmt.Errorf("Insufficient funds to transfer value. Req %v, has %v", self.value, sender.Amount)
}
@ -248,34 +252,61 @@ func (self *StateTransition) transferValue(sender, receiver *StateObject) error
return nil
}
func (self *StateTransition) Eval(script []byte, context *StateObject, typ string) (ret []byte, err error) {
func (self *StateTransition) Eval(script []byte, context *ethstate.StateObject, typ string) (ret []byte, err error) {
var (
block = self.block
initiator = self.Sender()
state = self.state
transactor = self.Sender()
state = self.state
env = NewEnv(state, self.tx, self.block)
callerClosure = ethvm.NewClosure(transactor, context, script, self.gas, self.gasPrice)
)
closure := NewClosure(initiator, context, script, state, self.gas, self.gasPrice)
vm := NewVm(state, nil, RuntimeVars{
Origin: initiator.Address(),
Block: block,
BlockNumber: block.Number,
PrevHash: block.PrevHash,
Coinbase: block.Coinbase,
Time: block.Time,
Diff: block.Difficulty,
Value: self.value,
})
vm := ethvm.New(env)
vm.Verbose = true
vm.Fn = typ
ret, err = Call(vm, closure, self.data)
ret, _, err = callerClosure.Call(vm, self.tx.Data)
/*
closure := NewClosure(initiator, context, script, state, self.gas, self.gasPrice)
vm := NewVm(state, nil, RuntimeVars{
Origin: initiator.Address(),
Block: block,
BlockNumber: block.Number,
PrevHash: block.PrevHash,
Coinbase: block.Coinbase,
Time: block.Time,
Diff: block.Difficulty,
Value: self.value,
})
vm.Verbose = true
vm.Fn = typ
ret, err = Call(vm, closure, self.data)
*/
return
}
func Call(vm *Vm, closure *Closure, data []byte) (ret []byte, err error) {
/*
func Call(vm *eth.Vm, closure *Closure, data []byte) (ret []byte, err error) {
ret, _, err = closure.Call(vm, data)
return
}
*/
// Converts an transaction in to a state object
func MakeContract(tx *Transaction, state *ethstate.State) *ethstate.StateObject {
// Create contract if there's no recipient
if tx.IsContract() {
addr := tx.CreationAddress()
contract := state.NewStateObject(addr)
contract.InitCode = tx.Data
contract.State = ethstate.NewState(ethtrie.NewTrie(ethutil.Config.Db, ""))
return contract
}
return nil
}