Moving closer to interop

ethchain/asm.go

@@ -28,7 +28,7 @@ func Disassemble(script []byte) (asm []string) {
 			if len(data) == 0 {
 				data = []byte{0}
 			}
-			asm = append(asm, fmt.Sprintf("0x%x", data))
+			asm = append(asm, fmt.Sprintf("%#x", data))
 
 			pc.Add(pc, big.NewInt(a-1))
 		}

ethchain/block_chain.go

@@ -55,6 +55,8 @@ func (bc *BlockChain) NewBlock(coinbase []byte) *Block {
 		nil,
 		"")
 
+	block.MinGasPrice = big.NewInt(10000000000000)
+
 	if bc.CurrentBlock != nil {
 		var mul *big.Int
 		if block.Time < lastBlockTime+42 {

ethchain/state_transition.go

@@ -131,14 +131,21 @@ func (self *StateTransition) TransitionState() (err error) {
 		return NonceError(tx.Nonce, sender.Nonce)
 	}
 
-	// Increment the nonce for the next transaction
-	sender.Nonce += 1
-
 	// Pre-pay gas / Buy gas of the coinbase account
 	if err = self.BuyGas(); err != nil {
 		return err
 	}
 
+	// XXX Transactions after this point are considered valid.
+
+	defer func() {
+		self.state.UpdateStateObject(sender)
+		self.state.UpdateStateObject(receiver)
+	}()
+
+	// Increment the nonce for the next transaction
+	sender.Nonce += 1
+
 	// Get the receiver (TODO fix this, if coinbase is the receiver we need to save/retrieve)
 	receiver = self.Receiver()
 
@@ -187,9 +194,6 @@ func (self *StateTransition) TransitionState() (err error) {
 	remaining := new(big.Int).Mul(self.gas, tx.GasPrice)
 	sender.AddAmount(remaining)
 
-	self.state.UpdateStateObject(sender)
-	self.state.UpdateStateObject(receiver)
-
 	return nil
 }
 

ethchain/types.go

@@ -226,7 +226,7 @@ var opCodeToString = map[OpCode]string{
 func (o OpCode) String() string {
 	str := opCodeToString[o]
 	if len(str) == 0 {
-		return fmt.Sprintf("Missing opcode 0x%x", int(o))
+		return fmt.Sprintf("Missing opcode %#x", int(o))
 	}
 
 	return str