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path: root/ethchain/state_transition.go
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-rw-r--r--ethchain/state_transition.go17
1 files changed, 13 insertions, 4 deletions
diff --git a/ethchain/state_transition.go b/ethchain/state_transition.go
index c88f4727f..25efd64cc 100644
--- a/ethchain/state_transition.go
+++ b/ethchain/state_transition.go
@@ -110,6 +110,15 @@ func (self *StateTransition) BuyGas() error {
return nil
}
+func (self *StateTransition) RefundGas() {
+ coinbase, sender := self.Coinbase(), self.Sender()
+ coinbase.RefundGas(self.gas, self.tx.GasPrice)
+
+ // Return remaining gas
+ remaining := new(big.Int).Mul(self.gas, self.tx.GasPrice)
+ sender.AddAmount(remaining)
+}
+
func (self *StateTransition) TransitionState() (err error) {
//snapshot := st.state.Snapshot()
@@ -141,6 +150,8 @@ func (self *StateTransition) TransitionState() (err error) {
// XXX Transactions after this point are considered valid.
defer func() {
+ self.RefundGas()
+
if sender != nil {
self.state.UpdateStateObject(sender)
}
@@ -148,6 +159,8 @@ func (self *StateTransition) TransitionState() (err error) {
if receiver != nil {
self.state.UpdateStateObject(receiver)
}
+
+ self.state.UpdateStateObject(self.Coinbase())
}()
// Increment the nonce for the next transaction
@@ -203,10 +216,6 @@ func (self *StateTransition) TransitionState() (err error) {
}
}
- // Return remaining gas
- remaining := new(big.Int).Mul(self.gas, tx.GasPrice)
- sender.AddAmount(remaining)
-
return nil
}