forked from cerc-io/plugeth
Updated VM & added helper methods to state
* VM BALANCE opcode updated to pop 1 item and use that to retrieve the address' balance * GetBalance and GetNonce on state that'll always return something valid
This commit is contained in:
obscuren
parent
9688ebef52
commit
04561c4ddc
@ -26,6 +26,131 @@ func NewState(trie *ethtrie.Trie) *State {
|
||||
return &State{trie: trie, stateObjects: make(map[string]*StateObject), manifest: NewManifest()}
|
||||
}
|
||||
|
||||
// Iterate over each storage address and yield callback
|
||||
func (s *State) EachStorage(cb ethtrie.EachCallback) {
|
||||
it := s.trie.NewIterator()
|
||||
it.Each(cb)
|
||||
}
|
||||
|
||||
// Retrieve the balance from the given address or 0 if object not found
|
||||
func (self *State) GetBalance(addr []byte) *big.Int {
|
||||
stateObject := self.GetStateObject(addr)
|
||||
if stateObject != nil {
|
||||
return stateObject.Amount
|
||||
}
|
||||
|
||||
return ethutil.Big0
|
||||
}
|
||||
|
||||
func (self *State) GetNonce(addr []byte) uint64 {
|
||||
stateObject := self.GetStateObject(addr)
|
||||
if stateObject != nil {
|
||||
return stateObject.Nonce
|
||||
}
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
//
|
||||
// Setting, updating & deleting state object methods
|
||||
//
|
||||
|
||||
// Update the given state object and apply it to state trie
|
||||
func (self *State) UpdateStateObject(stateObject *StateObject) {
|
||||
addr := stateObject.Address()
|
||||
|
||||
ethutil.Config.Db.Put(ethcrypto.Sha3Bin(stateObject.Script()), stateObject.Script())
|
||||
|
||||
self.trie.Update(string(addr), string(stateObject.RlpEncode()))
|
||||
|
||||
self.manifest.AddObjectChange(stateObject)
|
||||
}
|
||||
|
||||
// Delete the given state object and delete it from the state trie
|
||||
func (self *State) DeleteStateObject(stateObject *StateObject) {
|
||||
self.trie.Delete(string(stateObject.Address()))
|
||||
|
||||
delete(self.stateObjects, string(stateObject.Address()))
|
||||
}
|
||||
|
||||
// Retrieve a state object given my the address. Nil if not found
|
||||
func (self *State) GetStateObject(addr []byte) *StateObject {
|
||||
stateObject := self.stateObjects[string(addr)]
|
||||
if stateObject != nil {
|
||||
return stateObject
|
||||
}
|
||||
|
||||
data := self.trie.Get(string(addr))
|
||||
if len(data) == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
stateObject = NewStateObjectFromBytes(addr, []byte(data))
|
||||
self.stateObjects[string(addr)] = stateObject
|
||||
|
||||
return stateObject
|
||||
}
|
||||
|
||||
// Retrieve a state object or create a new state object if nil
|
||||
func (self *State) GetOrNewStateObject(addr []byte) *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 *State) NewStateObject(addr []byte) *StateObject {
|
||||
statelogger.Infof("(+) %x\n", addr)
|
||||
|
||||
stateObject := NewStateObject(addr)
|
||||
self.stateObjects[string(addr)] = stateObject
|
||||
|
||||
return stateObject
|
||||
}
|
||||
|
||||
// Deprecated
|
||||
func (self *State) GetAccount(addr []byte) *StateObject {
|
||||
return self.GetOrNewStateObject(addr)
|
||||
}
|
||||
|
||||
//
|
||||
// Setting, copying of the state methods
|
||||
//
|
||||
|
||||
func (s *State) Cmp(other *State) bool {
|
||||
return s.trie.Cmp(other.trie)
|
||||
}
|
||||
|
||||
func (self *State) Copy() *State {
|
||||
if self.trie != nil {
|
||||
state := NewState(self.trie.Copy())
|
||||
for k, stateObject := range self.stateObjects {
|
||||
state.stateObjects[k] = stateObject.Copy()
|
||||
}
|
||||
|
||||
return state
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (self *State) Set(state *State) {
|
||||
if state == nil {
|
||||
panic("Tried setting 'state' to nil through 'Set'")
|
||||
}
|
||||
|
||||
self.trie = state.trie
|
||||
self.stateObjects = state.stateObjects
|
||||
//*self = *state
|
||||
}
|
||||
|
||||
func (s *State) Root() interface{} {
|
||||
return s.trie.Root
|
||||
}
|
||||
|
||||
// Resets the trie and all siblings
|
||||
func (s *State) Reset() {
|
||||
s.trie.Undo()
|
||||
@ -83,112 +208,6 @@ func (self *State) Update() {
|
||||
}
|
||||
}
|
||||
|
||||
// Purges the current trie.
|
||||
func (s *State) Purge() int {
|
||||
return s.trie.NewIterator().Purge()
|
||||
}
|
||||
|
||||
func (s *State) EachStorage(cb ethtrie.EachCallback) {
|
||||
it := s.trie.NewIterator()
|
||||
it.Each(cb)
|
||||
}
|
||||
|
||||
func (self *State) ResetStateObject(stateObject *StateObject) {
|
||||
delete(self.stateObjects, string(stateObject.Address()))
|
||||
|
||||
stateObject.state.Reset()
|
||||
}
|
||||
|
||||
func (self *State) UpdateStateObject(stateObject *StateObject) {
|
||||
addr := stateObject.Address()
|
||||
|
||||
ethutil.Config.Db.Put(ethcrypto.Sha3Bin(stateObject.Script()), stateObject.Script())
|
||||
|
||||
self.trie.Update(string(addr), string(stateObject.RlpEncode()))
|
||||
|
||||
self.manifest.AddObjectChange(stateObject)
|
||||
}
|
||||
|
||||
func (self *State) DeleteStateObject(stateObject *StateObject) {
|
||||
self.trie.Delete(string(stateObject.Address()))
|
||||
|
||||
delete(self.stateObjects, string(stateObject.Address()))
|
||||
}
|
||||
|
||||
func (self *State) GetStateObject(addr []byte) *StateObject {
|
||||
stateObject := self.stateObjects[string(addr)]
|
||||
if stateObject != nil {
|
||||
return stateObject
|
||||
}
|
||||
|
||||
data := self.trie.Get(string(addr))
|
||||
if len(data) == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
stateObject = NewStateObjectFromBytes(addr, []byte(data))
|
||||
self.stateObjects[string(addr)] = stateObject
|
||||
|
||||
return stateObject
|
||||
}
|
||||
|
||||
func (self *State) GetOrNewStateObject(addr []byte) *StateObject {
|
||||
stateObject := self.GetStateObject(addr)
|
||||
if stateObject == nil {
|
||||
stateObject = self.NewStateObject(addr)
|
||||
}
|
||||
|
||||
return stateObject
|
||||
}
|
||||
|
||||
func (self *State) NewStateObject(addr []byte) *StateObject {
|
||||
statelogger.Infof("(+) %x\n", addr)
|
||||
|
||||
stateObject := NewStateObject(addr)
|
||||
self.stateObjects[string(addr)] = stateObject
|
||||
|
||||
return stateObject
|
||||
}
|
||||
|
||||
func (self *State) GetAccount(addr []byte) *StateObject {
|
||||
return self.GetOrNewStateObject(addr)
|
||||
}
|
||||
|
||||
func (s *State) Cmp(other *State) bool {
|
||||
return s.trie.Cmp(other.trie)
|
||||
}
|
||||
|
||||
func (self *State) Copy() *State {
|
||||
if self.trie != nil {
|
||||
state := NewState(self.trie.Copy())
|
||||
for k, stateObject := range self.stateObjects {
|
||||
state.stateObjects[k] = stateObject.Copy()
|
||||
}
|
||||
|
||||
return state
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (self *State) Set(state *State) {
|
||||
if state == nil {
|
||||
panic("Tried setting 'state' to nil through 'Set'")
|
||||
}
|
||||
|
||||
self.trie = state.trie
|
||||
self.stateObjects = state.stateObjects
|
||||
//*self = *state
|
||||
}
|
||||
|
||||
func (s *State) Put(key, object []byte) {
|
||||
s.trie.Update(string(key), string(object))
|
||||
}
|
||||
|
||||
func (s *State) Root() interface{} {
|
||||
return s.trie.Root
|
||||
}
|
||||
|
||||
// Object manifest
|
||||
//
|
||||
// The object manifest is used to keep changes to the state so we can keep track of the changes
|
||||
|
||||
@ -452,13 +452,26 @@ func (vm *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
|
||||
data := ethcrypto.Sha3Bin(mem.Get(offset.Int64(), size.Int64()))
|
||||
|
||||
stack.Push(ethutil.BigD(data))
|
||||
|
||||
vm.Printf(" => %x", data)
|
||||
// 0x30 range
|
||||
case ADDRESS:
|
||||
stack.Push(ethutil.BigD(closure.Object().Address()))
|
||||
|
||||
vm.Printf(" => %x", closure.Object().Address())
|
||||
case BALANCE:
|
||||
stack.Push(closure.object.Amount)
|
||||
require(1)
|
||||
|
||||
addr := stack.Pop().Bytes()
|
||||
balance := vm.state.GetBalance(addr)
|
||||
|
||||
stack.Push(balance)
|
||||
|
||||
vm.Printf(" => %v (%x)", balance, addr)
|
||||
case ORIGIN:
|
||||
stack.Push(ethutil.BigD(vm.vars.Origin))
|
||||
|
||||
vm.Printf(" => %v", vm.vars.Origin)
|
||||
case CALLER:
|
||||
caller := closure.caller.Address()
|
||||
stack.Push(ethutil.BigD(caller))
|
||||
@ -712,7 +725,7 @@ func (vm *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
|
||||
|
||||
stack.Push(ethutil.BigFalse)
|
||||
} else {
|
||||
//snapshot := vm.state.Copy()
|
||||
snapshot := vm.state.Copy()
|
||||
|
||||
stateObject := vm.state.GetOrNewStateObject(addr.Bytes())
|
||||
|
||||
@ -728,8 +741,7 @@ func (vm *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
|
||||
|
||||
vmlogger.Debugf("Closure execution failed. %v\n", err)
|
||||
|
||||
//vm.state.Set(snapshot)
|
||||
vm.state.ResetStateObject(stateObject)
|
||||
vm.state.Set(snapshot)
|
||||
} else {
|
||||
stack.Push(ethutil.BigTrue)
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user