Added trans state and removed watch address etc

The transient state can be used to test out changes before committing
them to the proc state. The transient state is currently being used by
the gui to support proper nonce updating without having to wait for a
block. This used to be done by a cached state mechanism which can now
safely by removed.

2 files changed, 9 insertions, 18 deletions

diff --git a/ethchain/state_manager.go b/ethchain/state_manager.go
index b8a893d15..fb5753ab3 100644
--- a/ethchain/state_manager.go
+++ b/ethchain/state_manager.go
@@ -50,6 +50,10 @@ type StateManager struct {
 	// Comparative state it used for comparing and validating end
 	// results
 	compState *State
+	// Transiently state. The trans state isn't ever saved, validated and
+	// it could be used for setting account nonces without effecting
+	// the main states.
+	transState *State
 
 	manifest *Manifest
 }
@@ -65,6 +69,8 @@ func NewStateManager(ethereum EthManager) *StateManager {
 		manifest:         NewManifest(),
 	}
 	sm.procState = ethereum.BlockChain().CurrentBlock.State()
+	sm.transState = sm.procState.Copy()
+
 	return sm
 }
 
@@ -72,22 +78,8 @@ func (sm *StateManager) ProcState() *State {
 	return sm.procState
 }
 
-// Watches any given address and puts it in the address state store
-func (sm *StateManager) WatchAddr(addr []byte) *CachedStateObject {
-	//XXX account := sm.bc.CurrentBlock.state.GetAccount(addr)
-	account := sm.procState.GetAccount(addr)
-
-	return sm.stateObjectCache.Add(addr, account)
-}
-
-func (sm *StateManager) GetAddrState(addr []byte) *CachedStateObject {
-	account := sm.stateObjectCache.Get(addr)
-	if account == nil {
-		a := sm.procState.GetAccount(addr)
-		account = &CachedStateObject{Nonce: a.Nonce, Object: a}
-	}
-
-	return account
+func (sm *StateManager) TransState() *State {
+	return sm.transState
 }
 
 func (sm *StateManager) BlockChain() *BlockChain {
diff --git a/ethchain/transaction_pool.go b/ethchain/transaction_pool.go
index 72836d6cb..56deae0c6 100644
--- a/ethchain/transaction_pool.go
+++ b/ethchain/transaction_pool.go
@@ -148,8 +148,7 @@ func (pool *TxPool) ValidateTransaction(tx *Transaction) error {
 	}
 
 	// Get the sender
-	accountState := pool.Ethereum.StateManager().GetAddrState(tx.Sender())
-	sender := accountState.Object
+	sender := pool.Ethereum.StateManager().procState.GetAccount(tx.Sender())
 
 	totAmount := new(big.Int).Add(tx.Value, new(big.Int).Mul(TxFee, TxFeeRat))
 	// Make sure there's enough in the sender's account. Having insufficient