core, core/state, core/vm: review changes

core/blockchain.go

@@ -214,8 +214,6 @@ func (self *BlockChain) loadLastState() error {
 		return err
 	}
 	self.stateCache = statedb
-	// XXX Reviewers: what's this for? I need to know if I need to backport this somehow
-	//self.stateCache.GetAccount(common.Address{})
 
 	// Issue a status log for the user
 	headerTd := self.GetTd(currentHeader.Hash(), currentHeader.Number.Uint64())

core/state/state_object.go

@@ -381,19 +381,3 @@ func (self *stateObject) Nonce() uint64 {
 func (self *stateObject) Value() *big.Int {
 	panic("Value on stateObject should never be called")
 }
-
-func (self *stateObject) ForEachStorage(cb func(key, value common.Hash) bool) {
-	// When iterating over the storage check the cache first
-	for h, value := range self.cachedStorage {
-		cb(h, value)
-	}
-
-	it := self.getTrie(self.db.db).Iterator()
-	for it.Next() {
-		// ignore cached values
-		key := common.BytesToHash(self.trie.GetKey(it.Key))
-		if _, ok := self.cachedStorage[key]; !ok {
-			cb(key, common.BytesToHash(it.Value))
-		}
-	}
-}

core/state/statedb_test.go

@@ -332,11 +332,10 @@ func (test *snapshotTest) checkEqual(state, checkstate *StateDB) error {
 		checkeq("GetCodeSize", state.GetCodeSize(addr), checkstate.GetCodeSize(addr))
 		// Check storage.
 		if obj := state.getStateObject(addr); obj != nil {
-			obj.ForEachStorage(func(key, val common.Hash) bool {
+			state.ForEachStorage(addr, func(key, val common.Hash) bool {
 				return checkeq("GetState("+key.Hex()+")", val, checkstate.GetState(addr, key))
 			})
-			checkobj := checkstate.getStateObject(addr)
-			checkobj.ForEachStorage(func(key, checkval common.Hash) bool {
+			checkstate.ForEachStorage(addr, func(key, checkval common.Hash) bool {
 				return checkeq("GetState("+key.Hex()+")", state.GetState(addr, key), checkval)
 			})
 		}

core/state_transition.go

@@ -142,7 +142,7 @@ func (self *StateTransition) from() vm.AccountRef {
 	if !self.state.Exist(f) {
 		self.state.CreateAccount(f)
 	}
-	return vm.Reference(f)
+	return vm.AccountRef(f)
 }
 
 func (self *StateTransition) to() vm.AccountRef {
@@ -154,7 +154,7 @@ func (self *StateTransition) to() vm.AccountRef {
 		return vm.AccountRef{} // contract creation
 	}
 
-	reference := vm.Reference(*to)
+	reference := vm.AccountRef(*to)
 	if !self.state.Exist(*to) {
 		self.state.CreateAccount(*to)
 	}

core/vm/contract.go

@@ -39,9 +39,6 @@ type AccountRef common.Address
 // Address casts AccountRef to a Address
 func (ar AccountRef) Address() common.Address { return (common.Address)(ar) }
 
-// Reference returns a casted Address to AccountRef
-func Reference(addr common.Address) AccountRef { return (AccountRef)(addr) }
-
 // Contract represents an ethereum contract in the state database. It contains
 // the the contract code, calling arguments. Contract implements ContractRef
 type Contract struct {

core/vm/evm.go

@@ -116,7 +116,7 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 	}
 
 	var (
-		to       = Reference(addr)
+		to       = AccountRef(addr)
 		snapshot = evm.StateDB.Snapshot()
 	)
 	if !evm.StateDB.Exist(addr) {
@@ -167,7 +167,7 @@ func (evm *EVM) CallCode(caller ContractRef, addr common.Address, input []byte,
 
 	var (
 		snapshot = evm.StateDB.Snapshot()
-		to       = Reference(caller.Address())
+		to       = AccountRef(caller.Address())
 	)
 	// initialise a new contract and set the code that is to be used by the
 	// E The contract is a scoped evmironment for this execution context
@@ -203,7 +203,7 @@ func (evm *EVM) DelegateCall(caller ContractRef, addr common.Address, input []by
 
 	var (
 		snapshot = evm.StateDB.Snapshot()
-		to       = Reference(caller.Address())
+		to       = AccountRef(caller.Address())
 	)
 
 	// Iinitialise a new contract and make initialise the delegate values
@@ -250,7 +250,7 @@ func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.I
 	// initialise a new contract and set the code that is to be used by the
 	// E The contract is a scoped evmironment for this execution context
 	// only.
-	contract := NewContract(caller, Reference(contractAddr), value, gas)
+	contract := NewContract(caller, AccountRef(contractAddr), value, gas)
 	contract.SetCallCode(&contractAddr, crypto.Keccak256Hash(code), code)
 
 	ret, err = evm.interpreter.Run(contract, nil)

core/vm/noop.go

@@ -67,3 +67,4 @@ func (NoopStateDB) RevertToSnapshot(int)                              {}
 func (NoopStateDB) Snapshot() int                                                      { return 0 }
 func (NoopStateDB) AddLog(*types.Log)                                                  {}
 func (NoopStateDB) AddPreimage(common.Hash, []byte)                                    {}
+func (NoopStateDB) ForEachStorage(common.Address, func(common.Hash, common.Hash) bool) {}

core/vm/runtime/runtime.go

@@ -107,7 +107,7 @@ func Execute(code, input []byte, cfg *Config) ([]byte, *state.StateDB, error) {
 	var (
 		address = common.StringToAddress("contract")
 		vmenv   = NewEnv(cfg, cfg.State)
-		sender  = vm.Reference(cfg.Origin)
+		sender  = vm.AccountRef(cfg.Origin)
 	)
 	cfg.State.CreateAccount(address)
 	// set the receiver's (the executing contract) code for execution.
@@ -137,7 +137,7 @@ func Create(input []byte, cfg *Config) ([]byte, common.Address, error) {
 	}
 	var (
 		vmenv  = NewEnv(cfg, cfg.State)
-		sender = vm.Reference(cfg.Origin)
+		sender = vm.AccountRef(cfg.Origin)
 	)
 
 	// Call the code with the given configuration.